concordium_rust_sdk/v2/

mod.rs

//! This module exposes [Client] which is a wrapper around the
//! generated gRPC rust client, providing a more ergonomic interface than the
//! generated client. See [Client] for documentation of how to use.
use crate::{
    endpoints,
    id::{self, types::AccountCredentialMessage},
    protocol_level_tokens,
    types::{
        self, block_certificates,
        chain_parameters::ChainParameters,
        hashes::{self, BlockHash, TransactionHash, TransactionSignHash},
        queries::ConsensusDetailedStatus,
        smart_contracts::{
            ContractContext, InstanceInfo, InvokeContractResult, ModuleReference, WasmModule,
        },
        transactions::{self, InitContractPayload, UpdateContractPayload, UpdateInstruction},
        AbsoluteBlockHeight, AccountInfo, AccountPending, BlockItemSummary,
        CredentialRegistrationID, Energy, Memo, Nonce, RegisteredData, SpecialTransactionOutcome,
        TransactionStatus, UpdateSequenceNumber,
    },
};
use anyhow::Context;
pub use concordium_base::common::upward::{self, Upward};
use concordium_base::{
    base::{AccountIndex, BlockHeight, Epoch, GenesisIndex},
    common::{
        self,
        types::{TransactionSignature, TransactionTime},
    },
    contracts_common::{
        AccountAddress, AccountAddressParseError, Amount, ContractAddress, OwnedContractName,
        OwnedParameter, OwnedReceiveName, ReceiveName,
    },
    hashes::HashFromStrError,
    transactions::{BlockItem, EncodedPayload, PayloadLike},
};
pub use endpoints::{QueryError, QueryResult, RPCError, RPCResult};
use futures::{Stream, StreamExt, TryStreamExt};
pub use http::uri::Scheme;
use std::{collections::HashMap, num::ParseIntError, str::FromStr};
use tonic::IntoRequest;
pub use tonic::{
    transport::{Endpoint, Error},
    Code, Status,
};

use self::dry_run::WithRemainingQuota;

mod conversions;
pub mod dry_run;
#[path = "generated/mod.rs"]
#[allow(
    clippy::large_enum_variant,
    clippy::enum_variant_names,
    clippy::derive_partial_eq_without_eq
)]
#[rustfmt::skip]
mod gen;
pub use gen::concordium::v2 as generated;
pub mod proto_schema_version;

/// A client for gRPC API v2 of the Concordium node. Can be used to control the
/// node, send transactions and query information about the node and the state
/// of the chain.
///
/// # Connecting to a Concordium node
///
/// Creates a new client connection to a Concordium node.
/// Make sure to have access to the gRPC API v2 endpoint of a running node.
///
/// ```no_run
/// # tokio_test::block_on(async {
/// use concordium_rust_sdk::v2::{Client, Endpoint};
/// use std::str::FromStr;
///
/// // Assumes the node is running locally and gRPC API v2 can be accessed on port 20001.
/// let node_endpoint = Endpoint::from_str("http://localhost:20001")?;
/// let mut client = Client::new(node_endpoint).await?;
///
/// // Verify the connection to the node by printing node information.
/// let node_info = client.get_node_info().await?;
/// println!("{:#?}", node_info);
/// # Ok::<(), anyhow::Error>(())
/// # });
/// ```
///
/// # Concurrent use of the client
///
/// All endpoints take a `&mut self` as an argument which means that a single
/// instance cannot be used concurrently. However instead of putting the Client
/// behind a Mutex, the intended way to use it is to clone it. Cloning is very
/// cheap and will reuse the underlying connection.
#[derive(Clone, Debug)]
pub struct Client {
    client: generated::queries_client::QueriesClient<tonic::transport::Channel>,
}

/// A query response with the addition of the block hash used by the query.
/// The block hash used for querying might be unknown when providing the block
/// as [BlockIdentifier::Best] or [BlockIdentifier::LastFinal].
#[derive(Clone, Copy, Debug)]
pub struct QueryResponse<A> {
    /// Block hash for which the query applies.
    pub block_hash: BlockHash,
    /// The result of the query.
    pub response: A,
}

impl<A> AsRef<A> for QueryResponse<A> {
    fn as_ref(&self) -> &A {
        &self.response
    }
}

/// A block identifier used in queries.
#[derive(Copy, Clone, Debug, derive_more::From, PartialEq, Eq)]
pub enum BlockIdentifier {
    /// Query in the context of the best block.
    Best,
    /// Query in the context of the last finalized block at the time of the
    /// query.
    LastFinal,
    /// Query in the context of a specific block hash.
    Given(BlockHash),
    /// Query for a block at absolute height. If a unique
    /// block can not be identified at that height the query will return
    /// `NotFound`.
    AbsoluteHeight(AbsoluteBlockHeight),
    /// Query for a block at a height relative to genesis index. If a unique
    /// block can not be identified at that height the query will return
    /// `NotFound`.
    RelativeHeight(RelativeBlockHeight),
}

#[derive(Debug, thiserror::Error)]
pub enum BlockIdentifierFromStrError {
    #[error("The input is not recognized.")]
    InvalidFormat,
    #[error("The input is not a valid hash: {0}.")]
    InvalidHash(#[from] HashFromStrError),
    #[error("The input is not a valid unsigned integer: {0}.")]
    InvalidInteger(#[from] ParseIntError),
}

/// Display implementation to match the [`FromStr`] implementation defined just
/// below.
impl std::fmt::Display for BlockIdentifier {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            BlockIdentifier::Best => "best".fmt(f),
            BlockIdentifier::LastFinal => "lastfinal".fmt(f),
            BlockIdentifier::Given(bh) => bh.fmt(f),
            BlockIdentifier::AbsoluteHeight(h) => write!(f, "@{h}"),
            BlockIdentifier::RelativeHeight(rh) => {
                write!(
                    f,
                    "@{}/{}{}",
                    rh.height,
                    rh.genesis_index,
                    if rh.restrict { "!" } else { "" }
                )
            }
        }
    }
}

/// Parse a string as a [`BlockIdentifier`]. The format is one of the following
///
/// - the string `best` for [`Best`](BlockIdentifier::Best)
/// - the string `lastFinal` or `lastfinal` for
///   [`LastFinal`](BlockIdentifier::LastFinal)
/// - a valid block hash for [`Given`](BlockIdentifier::Given)
/// - a string starting with `@` followed by an integer and nothing else for
///   [`AbsoluteHeight`](BlockIdentifier::AbsoluteHeight)
/// - a string in the format `@123/3` optionally followed by `!` where `123` is
///   the block height and `3` is the genesis index for
///   [`RelativeHeight`](BlockIdentifier::RelativeHeight). If `!` is present
///   then `restrict` is set to `true`.
impl std::str::FromStr for BlockIdentifier {
    type Err = BlockIdentifierFromStrError;

    fn from_str(s: &str) -> Result<Self, Self::Err> {
        match s {
            "best" => Ok(Self::Best),
            "lastFinal" => Ok(Self::LastFinal),
            "lastfinal" => Ok(Self::LastFinal),
            _ => {
                if let Some(rest) = s.strip_prefix('@') {
                    if let Some((height_str, gen_idx_str)) = rest.split_once('/') {
                        let height = BlockHeight::from_str(height_str)?;
                        if let Some(gen_idx) = gen_idx_str.strip_suffix('!') {
                            let genesis_index = GenesisIndex::from_str(gen_idx)?;
                            Ok(Self::RelativeHeight(RelativeBlockHeight {
                                genesis_index,
                                height,
                                restrict: true,
                            }))
                        } else {
                            let genesis_index = GenesisIndex::from_str(gen_idx_str)?;
                            Ok(Self::RelativeHeight(RelativeBlockHeight {
                                genesis_index,
                                height,
                                restrict: false,
                            }))
                        }
                    } else {
                        let h = AbsoluteBlockHeight::from_str(rest)?;
                        Ok(Self::AbsoluteHeight(h))
                    }
                } else {
                    let h = BlockHash::from_str(s)?;
                    Ok(Self::Given(h))
                }
            }
        }
    }
}

/// Block height relative to an explicit genesis index.
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
pub struct RelativeBlockHeight {
    /// Genesis index to start from.
    pub genesis_index: types::GenesisIndex,
    /// Height starting from the genesis block at the genesis index.
    pub height: types::BlockHeight,
    /// Whether to return results only from the specified genesis index
    /// (`true`), or allow results from more recent genesis indices
    /// as well (`false`).
    pub restrict: bool,
}

/// An account identifier used in queries.
#[derive(Copy, Clone, Debug, derive_more::From, derive_more::Display)]
pub enum AccountIdentifier {
    /// Identify an account by an address.
    #[display(fmt = "{_0}")]
    Address(AccountAddress),
    /// Identify an account by the credential registration id.
    #[display(fmt = "{_0}")]
    CredId(CredentialRegistrationID),
    /// Identify an account by its account index.
    #[display(fmt = "{_0}")]
    Index(crate::types::AccountIndex),
}

impl FromStr for AccountIdentifier {
    type Err = AccountAddressParseError;

    fn from_str(s: &str) -> Result<Self, Self::Err> {
        if let Ok(ai) = s.parse::<crate::types::AccountIndex>() {
            return Ok(Self::Index(ai));
        }
        if let Ok(cid) = s.parse::<CredentialRegistrationID>() {
            return Ok(Self::CredId(cid));
        }
        s.parse().map(Self::Address)
    }
}

/// Identifier for an [`Epoch`] relative to the specified genesis index.
#[derive(Debug, Copy, Clone)]
pub struct SpecifiedEpoch {
    /// Genesis index to query in.
    pub genesis_index: types::GenesisIndex,
    /// The epoch of the genesis to query.
    pub epoch: types::Epoch,
}

/// An identifier of an epoch used in queries.
#[derive(Copy, Clone, Debug, derive_more::From)]
pub enum EpochIdentifier {
    /// A specified epoch to query.
    Specified(SpecifiedEpoch),
    /// Query the epoch of the block.
    Block(BlockIdentifier),
}

/// Errors that may occur as a result of
/// parsing a [`EpochIdentifier`] from a string via
/// [from_str(&str)][std::str::FromStr].
#[derive(Debug, thiserror::Error)]
pub enum EpochIdentifierFromStrError {
    #[error("The input is not recognized.")]
    InvalidFormat,
    #[error("The genesis index is not a valid unsigned integer")]
    InvalidGenesis,
    #[error("The epoch index is not a valid unsigned integer")]
    InvalidEpoch,
    #[error("The input is not a valid block identifier: {0}.")]
    InvalidBlockIdentifier(#[from] BlockIdentifierFromStrError),
}

/// Parse a string as an [`EpochIdentifier`]. The format is one of the
/// following:
///
/// - a string starting with `%` followed by two integers separated by `,` for
///   [`Specified`](EpochIdentifier::Specified). First component is treated as
///   the genesis index and the second component as the epoch.
/// - a string starting with `@` followed by a [`BlockIdentifier`] for
///   [`Block`](EpochIdentifier::Block).
impl std::str::FromStr for EpochIdentifier {
    type Err = EpochIdentifierFromStrError;

    fn from_str(s: &str) -> Result<Self, Self::Err> {
        if let Some(rest) = s.strip_prefix('%') {
            if let Some((gen_idx_str, epoch_str)) = rest.split_once(',') {
                let genesis_index = GenesisIndex::from_str(gen_idx_str)
                    .map_err(|_| EpochIdentifierFromStrError::InvalidGenesis)?;
                let epoch = Epoch::from_str(epoch_str)
                    .map_err(|_| EpochIdentifierFromStrError::InvalidEpoch)?;
                Ok(Self::Specified(SpecifiedEpoch {
                    genesis_index,
                    epoch,
                }))
            } else {
                Err(EpochIdentifierFromStrError::InvalidFormat)
            }
        } else {
            Ok(Self::Block(BlockIdentifier::from_str(s)?))
        }
    }
}

impl IntoRequest<generated::EpochRequest> for &EpochIdentifier {
    fn into_request(self) -> tonic::Request<generated::EpochRequest> {
        tonic::Request::new((*self).into())
    }
}

impl From<EpochIdentifier> for generated::EpochRequest {
    fn from(ei: EpochIdentifier) -> Self {
        match ei {
            EpochIdentifier::Specified(SpecifiedEpoch {
                genesis_index,
                epoch,
            }) => generated::EpochRequest {
                epoch_request_input: Some(
                    generated::epoch_request::EpochRequestInput::RelativeEpoch(
                        generated::epoch_request::RelativeEpoch {
                            genesis_index: Some(generated::GenesisIndex {
                                value: genesis_index.height,
                            }),
                            epoch: Some(generated::Epoch { value: epoch.epoch }),
                        },
                    ),
                ),
            },
            EpochIdentifier::Block(bi) => generated::EpochRequest {
                epoch_request_input: Some(generated::epoch_request::EpochRequestInput::BlockHash(
                    (&bi).into(),
                )),
            },
        }
    }
}

/// Information of a finalized block.
#[derive(Copy, Clone, Debug, Eq, PartialEq)]
pub struct FinalizedBlockInfo {
    /// The block hash for the finalized block.
    pub block_hash: BlockHash,
    /// The absolute block height for the finalized block.
    pub height: AbsoluteBlockHeight,
}

impl From<&BlockIdentifier> for generated::BlockHashInput {
    fn from(bi: &BlockIdentifier) -> Self {
        let block_hash_input = match bi {
            BlockIdentifier::Best => {
                generated::block_hash_input::BlockHashInput::Best(Default::default())
            }
            BlockIdentifier::LastFinal => {
                generated::block_hash_input::BlockHashInput::LastFinal(Default::default())
            }
            BlockIdentifier::Given(h) => {
                generated::block_hash_input::BlockHashInput::Given(generated::BlockHash {
                    value: h.as_ref().to_vec(),
                })
            }
            &BlockIdentifier::AbsoluteHeight(h) => {
                generated::block_hash_input::BlockHashInput::AbsoluteHeight(h.into())
            }
            &BlockIdentifier::RelativeHeight(h) => {
                generated::block_hash_input::BlockHashInput::RelativeHeight(h.into())
            }
        };
        generated::BlockHashInput {
            block_hash_input: Some(block_hash_input),
        }
    }
}

impl IntoRequest<generated::BlockHashInput> for &BlockIdentifier {
    fn into_request(self) -> tonic::Request<generated::BlockHashInput> {
        tonic::Request::new(self.into())
    }
}

impl From<&AccountAddress> for generated::AccountAddress {
    fn from(addr: &AccountAddress) -> Self {
        generated::AccountAddress {
            value: concordium_base::common::to_bytes(addr),
        }
    }
}

impl From<AccountAddress> for generated::AccountAddress {
    fn from(addr: AccountAddress) -> Self {
        generated::AccountAddress {
            value: common::to_bytes(&addr),
        }
    }
}

impl From<&super::types::Address> for generated::Address {
    fn from(addr: &super::types::Address) -> Self {
        let ty = match addr {
            super::types::Address::Account(account) => {
                generated::address::Type::Account(account.into())
            }
            super::types::Address::Contract(contract) => {
                generated::address::Type::Contract(contract.into())
            }
        };
        generated::Address { r#type: Some(ty) }
    }
}

impl From<&Memo> for generated::Memo {
    fn from(v: &Memo) -> Self {
        Self {
            value: v.as_ref().clone(),
        }
    }
}

impl<'a> From<ReceiveName<'a>> for generated::ReceiveName {
    fn from(a: ReceiveName<'a>) -> Self {
        generated::ReceiveName {
            value: a.get_chain_name().to_string(),
        }
    }
}

impl From<&RegisteredData> for generated::RegisteredData {
    fn from(v: &RegisteredData) -> Self {
        Self {
            value: v.as_ref().clone(),
        }
    }
}
impl From<&[u8]> for generated::Parameter {
    fn from(a: &[u8]) -> Self {
        generated::Parameter { value: a.to_vec() }
    }
}

impl From<&TransactionHash> for generated::TransactionHash {
    fn from(th: &TransactionHash) -> Self {
        generated::TransactionHash { value: th.to_vec() }
    }
}

impl From<&AccountIdentifier> for generated::AccountIdentifierInput {
    fn from(ai: &AccountIdentifier) -> Self {
        let account_identifier_input = match ai {
            AccountIdentifier::Address(addr) => {
                generated::account_identifier_input::AccountIdentifierInput::Address(addr.into())
            }
            AccountIdentifier::CredId(credid) => {
                let credid = generated::CredentialRegistrationId {
                    value: concordium_base::common::to_bytes(credid),
                };
                generated::account_identifier_input::AccountIdentifierInput::CredId(credid)
            }
            AccountIdentifier::Index(index) => {
                generated::account_identifier_input::AccountIdentifierInput::AccountIndex(
                    (*index).into(),
                )
            }
        };
        generated::AccountIdentifierInput {
            account_identifier_input: Some(account_identifier_input),
        }
    }
}

impl From<&ModuleReference> for generated::ModuleRef {
    fn from(mr: &ModuleReference) -> Self {
        Self { value: mr.to_vec() }
    }
}

impl From<ModuleReference> for generated::ModuleRef {
    fn from(mr: ModuleReference) -> Self {
        Self { value: mr.to_vec() }
    }
}

impl From<&WasmModule> for generated::VersionedModuleSource {
    fn from(v: &WasmModule) -> Self {
        Self {
            module: Some(match v.version {
                types::smart_contracts::WasmVersion::V0 => {
                    generated::versioned_module_source::Module::V0(
                        generated::versioned_module_source::ModuleSourceV0 {
                            value: v.source.as_ref().clone(),
                        },
                    )
                }
                types::smart_contracts::WasmVersion::V1 => {
                    generated::versioned_module_source::Module::V1(
                        generated::versioned_module_source::ModuleSourceV1 {
                            value: v.source.as_ref().clone(),
                        },
                    )
                }
            }),
        }
    }
}

impl From<&OwnedContractName> for generated::InitName {
    fn from(v: &OwnedContractName) -> Self {
        Self {
            value: v.as_contract_name().get_chain_name().to_string(),
        }
    }
}

impl From<&OwnedReceiveName> for generated::ReceiveName {
    fn from(v: &OwnedReceiveName) -> Self {
        Self {
            value: v.as_receive_name().get_chain_name().to_string(),
        }
    }
}

impl From<&OwnedParameter> for generated::Parameter {
    fn from(v: &OwnedParameter) -> Self {
        Self {
            value: v.as_ref().to_vec(),
        }
    }
}

impl From<&InitContractPayload> for generated::InitContractPayload {
    fn from(v: &InitContractPayload) -> Self {
        Self {
            amount: Some(v.amount.into()),
            module_ref: Some(v.mod_ref.into()),
            init_name: Some((&v.init_name).into()),
            parameter: Some((&v.param).into()),
        }
    }
}

impl From<&UpdateContractPayload> for generated::UpdateContractPayload {
    fn from(v: &UpdateContractPayload) -> Self {
        Self {
            amount: Some(v.amount.into()),
            address: Some(v.address.into()),
            receive_name: Some((&v.receive_name).into()),
            parameter: Some((&v.message).into()),
        }
    }
}

impl From<&ContractAddress> for generated::ContractAddress {
    fn from(ca: &ContractAddress) -> Self {
        Self {
            index: ca.index,
            subindex: ca.subindex,
        }
    }
}

impl From<Nonce> for generated::SequenceNumber {
    fn from(v: Nonce) -> Self {
        generated::SequenceNumber { value: v.nonce }
    }
}

impl From<UpdateSequenceNumber> for generated::UpdateSequenceNumber {
    fn from(v: UpdateSequenceNumber) -> Self {
        generated::UpdateSequenceNumber { value: v.number }
    }
}

impl From<Energy> for generated::Energy {
    fn from(v: Energy) -> Self {
        generated::Energy { value: v.energy }
    }
}

impl From<TransactionTime> for generated::TransactionTime {
    fn from(v: TransactionTime) -> Self {
        generated::TransactionTime { value: v.seconds }
    }
}

impl From<&Amount> for generated::Amount {
    fn from(v: &Amount) -> Self {
        Self { value: v.micro_ccd }
    }
}

impl From<Amount> for generated::Amount {
    fn from(v: Amount) -> Self {
        Self { value: v.micro_ccd }
    }
}

impl
    From<
        &AccountCredentialMessage<
            id::constants::IpPairing,
            id::constants::ArCurve,
            id::constants::AttributeKind,
        >,
    > for generated::CredentialDeployment
{
    fn from(
        v: &AccountCredentialMessage<
            id::constants::IpPairing,
            id::constants::ArCurve,
            id::constants::AttributeKind,
        >,
    ) -> Self {
        Self {
            message_expiry: Some(v.message_expiry.into()),
            payload: Some(generated::credential_deployment::Payload::RawPayload(
                common::to_bytes(&v.credential),
            )),
        }
    }
}

impl From<&UpdateInstruction> for generated::UpdateInstruction {
    fn from(v: &UpdateInstruction) -> Self {
        Self {
            signatures: Some(generated::SignatureMap {
                signatures: {
                    let mut hm = HashMap::new();
                    for (key_idx, sig) in v.signatures.signatures.iter() {
                        hm.insert(
                            key_idx.index.into(),
                            generated::Signature {
                                value: sig.sig.to_owned(),
                            },
                        );
                    }
                    hm
                },
            }),
            header: Some(generated::UpdateInstructionHeader {
                sequence_number: Some(v.header.seq_number.into()),
                effective_time: Some(v.header.effective_time.into()),
                timeout: Some(v.header.timeout.into()),
            }),
            payload: Some(generated::UpdateInstructionPayload {
                payload: Some(generated::update_instruction_payload::Payload::RawPayload(
                    common::to_bytes(&v.payload),
                )),
            }),
        }
    }
}

impl IntoRequest<generated::AccountInfoRequest> for (&AccountIdentifier, &BlockIdentifier) {
    fn into_request(self) -> tonic::Request<generated::AccountInfoRequest> {
        let ai = generated::AccountInfoRequest {
            block_hash: Some(self.1.into()),
            account_identifier: Some(self.0.into()),
        };
        tonic::Request::new(ai)
    }
}

impl IntoRequest<generated::AncestorsRequest> for (&BlockIdentifier, u64) {
    fn into_request(self) -> tonic::Request<generated::AncestorsRequest> {
        let ar = generated::AncestorsRequest {
            block_hash: Some(self.0.into()),
            amount: self.1,
        };
        tonic::Request::new(ar)
    }
}

impl IntoRequest<generated::ModuleSourceRequest> for (&ModuleReference, &BlockIdentifier) {
    fn into_request(self) -> tonic::Request<generated::ModuleSourceRequest> {
        let r = generated::ModuleSourceRequest {
            block_hash: Some(self.1.into()),
            module_ref: Some(self.0.into()),
        };
        tonic::Request::new(r)
    }
}

impl IntoRequest<generated::InstanceInfoRequest> for (ContractAddress, &BlockIdentifier) {
    fn into_request(self) -> tonic::Request<generated::InstanceInfoRequest> {
        let r = generated::InstanceInfoRequest {
            block_hash: Some(self.1.into()),
            address: Some(self.0.into()),
        };
        tonic::Request::new(r)
    }
}

impl<V: Into<Vec<u8>>> IntoRequest<generated::InstanceStateLookupRequest>
    for (ContractAddress, &BlockIdentifier, V)
{
    fn into_request(self) -> tonic::Request<generated::InstanceStateLookupRequest> {
        let r = generated::InstanceStateLookupRequest {
            block_hash: Some(self.1.into()),
            address: Some(self.0.into()),
            key: self.2.into(),
        };
        tonic::Request::new(r)
    }
}

impl IntoRequest<generated::TransactionHash> for &TransactionHash {
    fn into_request(self) -> tonic::Request<generated::TransactionHash> {
        tonic::Request::new(self.into())
    }
}

impl IntoRequest<generated::AccountIdentifierInput> for &AccountIdentifier {
    fn into_request(self) -> tonic::Request<generated::AccountIdentifierInput> {
        tonic::Request::new(self.into())
    }
}

impl IntoRequest<generated::AccountAddress> for &AccountAddress {
    fn into_request(self) -> tonic::Request<generated::AccountAddress> {
        tonic::Request::new(self.into())
    }
}

impl From<transactions::TransactionHeader> for generated::AccountTransactionHeader {
    fn from(v: transactions::TransactionHeader) -> Self {
        (&v).into()
    }
}

impl From<&transactions::TransactionHeader> for generated::AccountTransactionHeader {
    fn from(v: &transactions::TransactionHeader) -> Self {
        Self {
            sender: Some(generated::AccountAddress::from(v.sender)),
            sequence_number: Some(v.nonce.into()),
            energy_amount: Some(v.energy_amount.into()),
            expiry: Some(v.expiry.into()),
        }
    }
}

impl From<TransactionSignature> for generated::AccountTransactionSignature {
    fn from(v: TransactionSignature) -> Self {
        (&v).into()
    }
}

impl From<&TransactionSignature> for generated::AccountTransactionSignature {
    fn from(v: &TransactionSignature) -> Self {
        Self {
            signatures: {
                let mut cred_map: HashMap<u32, generated::AccountSignatureMap> = HashMap::new();
                for (cred_idx, sig_map) in v.signatures.iter() {
                    let mut acc_sig_map: HashMap<u32, generated::Signature> = HashMap::new();
                    for (key_idx, sig) in sig_map.iter() {
                        acc_sig_map.insert(
                            key_idx.0.into(),
                            generated::Signature {
                                value: sig.sig.to_owned(),
                            },
                        );
                    }
                    cred_map.insert(
                        cred_idx.index.into(),
                        generated::AccountSignatureMap {
                            signatures: acc_sig_map,
                        },
                    );
                }
                cred_map
            },
        }
    }
}

impl IntoRequest<generated::PreAccountTransaction>
    for (&transactions::TransactionHeader, &transactions::Payload)
{
    fn into_request(self) -> tonic::Request<generated::PreAccountTransaction> {
        let request = generated::PreAccountTransaction {
            header: Some(self.0.into()),
            payload: Some(generated::AccountTransactionPayload {
                payload: Some(generated::account_transaction_payload::Payload::RawPayload(
                    self.1.encode().into(),
                )),
            }),
        };
        tonic::Request::new(request)
    }
}

impl<P: PayloadLike> IntoRequest<generated::SendBlockItemRequest> for &transactions::BlockItem<P> {
    fn into_request(self) -> tonic::Request<generated::SendBlockItemRequest> {
        let request = match self {
            transactions::BlockItem::AccountTransaction(v) => {
                generated::SendBlockItemRequest {
                    block_item: Some(
                        generated::send_block_item_request::BlockItem::AccountTransaction(
                            generated::AccountTransaction {
                                signature: Some((&v.signature).into()),
                                header: Some((&v.header).into()),
                                payload: {
                                    let atp = generated::AccountTransactionPayload{
                                    payload: Some(generated::account_transaction_payload::Payload::RawPayload(v.payload.encode().into())),
                                };
                                    Some(atp)
                                },
                            },
                        ),
                    ),
                }
            }
            transactions::BlockItem::CredentialDeployment(v) => generated::SendBlockItemRequest {
                block_item: Some(
                    generated::send_block_item_request::BlockItem::CredentialDeployment(
                        v.as_ref().into(),
                    ),
                ),
            },
            transactions::BlockItem::UpdateInstruction(v) => generated::SendBlockItemRequest {
                block_item: Some(
                    generated::send_block_item_request::BlockItem::UpdateInstruction(v.into()),
                ),
            },
        };
        tonic::Request::new(request)
    }
}

impl IntoRequest<generated::InvokeInstanceRequest> for (&BlockIdentifier, &ContractContext) {
    fn into_request(self) -> tonic::Request<generated::InvokeInstanceRequest> {
        let (block, context) = self;
        tonic::Request::new(generated::InvokeInstanceRequest {
            block_hash: Some(block.into()),
            invoker: context.invoker.as_ref().map(|a| a.into()),
            instance: Some((&context.contract).into()),
            amount: Some(context.amount.into()),
            entrypoint: Some(context.method.as_receive_name().into()),
            parameter: Some(context.parameter.as_ref().into()),
            energy: context.energy.map(From::from),
        })
    }
}

impl IntoRequest<generated::PoolInfoRequest> for (&BlockIdentifier, types::BakerId) {
    fn into_request(self) -> tonic::Request<generated::PoolInfoRequest> {
        let req = generated::PoolInfoRequest {
            block_hash: Some(self.0.into()),
            baker: Some(self.1.into()),
        };
        tonic::Request::new(req)
    }
}

impl IntoRequest<generated::BakerId> for types::BakerId {
    fn into_request(self) -> tonic::Request<generated::BakerId> {
        tonic::Request::new(generated::BakerId {
            value: self.id.index,
        })
    }
}

impl IntoRequest<generated::BlocksAtHeightRequest> for &endpoints::BlocksAtHeightInput {
    fn into_request(self) -> tonic::Request<generated::BlocksAtHeightRequest> {
        tonic::Request::new(self.into())
    }
}

impl IntoRequest<generated::GetPoolDelegatorsRequest> for (&BlockIdentifier, types::BakerId) {
    fn into_request(self) -> tonic::Request<generated::GetPoolDelegatorsRequest> {
        let req = generated::GetPoolDelegatorsRequest {
            block_hash: Some(self.0.into()),
            baker: Some(self.1.into()),
        };
        tonic::Request::new(req)
    }
}

impl TryFrom<crate::v2::generated::BannedPeer> for types::network::BannedPeer {
    type Error = anyhow::Error;

    fn try_from(value: crate::v2::generated::BannedPeer) -> Result<Self, Self::Error> {
        Ok(types::network::BannedPeer(
            <std::net::IpAddr as std::str::FromStr>::from_str(&value.ip_address.require()?.value)?,
        ))
    }
}

impl TryFrom<generated::IpSocketAddress> for std::net::SocketAddr {
    type Error = anyhow::Error;

    fn try_from(value: generated::IpSocketAddress) -> Result<Self, Self::Error> {
        Ok(std::net::SocketAddr::new(
            <std::net::IpAddr as std::str::FromStr>::from_str(&value.ip.require()?.value)?,
            value.port.require()?.value as u16,
        ))
    }
}

impl IntoRequest<crate::v2::generated::BannedPeer> for &types::network::BannedPeer {
    fn into_request(self) -> tonic::Request<crate::v2::generated::BannedPeer> {
        tonic::Request::new(crate::v2::generated::BannedPeer {
            ip_address: Some(crate::v2::generated::IpAddress {
                value: self.0.to_string(),
            }),
        })
    }
}

impl From<generated::PeerId> for types::network::PeerId {
    fn from(value: generated::PeerId) -> Self {
        types::network::PeerId(value.value)
    }
}

impl TryFrom<generated::PeersInfo> for types::network::PeersInfo {
    type Error = anyhow::Error;

    fn try_from(peers_info: generated::PeersInfo) -> Result<Self, Self::Error> {
        // Get information of the peers that the node is connected to.
        // Note. If one peer contains malformed data then this function does not
        // return any information about the others.
        // This should only happen in cases where the sdk and node is not on the same
        // major version.
        let peers = peers_info
            .peers
            .into_iter()
            .map(|peer| {
                // Parse the catchup status of the peer.
                let peer_consensus_info =
                    Upward::from(peer.consensus_info).and_then(|info| match info {
                        generated::peers_info::peer::ConsensusInfo::Bootstrapper(_) => {
                            Upward::Known(types::network::PeerConsensusInfo::Bootstrapper)
                        }
                        generated::peers_info::peer::ConsensusInfo::NodeCatchupStatus(status) => {
                            let Upward::Known(status) = Upward::from(
                                generated::peers_info::peer::CatchupStatus::try_from(status).ok(),
                            ) else {
                                return Upward::Known(types::network::PeerConsensusInfo::Node(
                                    Upward::Unknown(()),
                                ));
                            };
                            let status = match status {
                                generated::peers_info::peer::CatchupStatus::Uptodate => {
                                    types::network::PeerCatchupStatus::UpToDate
                                }
                                generated::peers_info::peer::CatchupStatus::Pending => {
                                    types::network::PeerCatchupStatus::Pending
                                }
                                generated::peers_info::peer::CatchupStatus::Catchingup => {
                                    types::network::PeerCatchupStatus::CatchingUp
                                }
                            };

                            Upward::Known(types::network::PeerConsensusInfo::Node(Upward::Known(
                                status,
                            )))
                        }
                    });
                // Parse the network statistics for the peer.
                let stats = peer.network_stats.require()?;
                let network_stats = types::network::NetworkStats {
                    packets_sent: stats.packets_sent,
                    packets_received: stats.packets_received,
                    latency: stats.latency,
                };
                Ok(types::network::Peer {
                    peer_id: peer.peer_id.require()?.into(),
                    consensus_info: peer_consensus_info,
                    network_stats,
                    addr: peer.socket_address.require()?.try_into()?,
                })
            })
            .collect::<anyhow::Result<Vec<types::network::Peer>>>()?;
        Ok(types::network::PeersInfo { peers })
    }
}

impl TryFrom<generated::node_info::NetworkInfo> for types::NetworkInfo {
    type Error = anyhow::Error;

    fn try_from(network_info: generated::node_info::NetworkInfo) -> Result<Self, Self::Error> {
        Ok(types::NetworkInfo {
            node_id: network_info.node_id.require()?.value,
            peer_total_sent: network_info.peer_total_sent,
            peer_total_received: network_info.peer_total_received,
            avg_bps_in: network_info.avg_bps_in,
            avg_bps_out: network_info.avg_bps_out,
        })
    }
}

impl IntoRequest<crate::v2::generated::PeerToBan> for types::network::PeerToBan {
    fn into_request(self) -> tonic::Request<crate::v2::generated::PeerToBan> {
        tonic::Request::new(match self {
            types::network::PeerToBan::IpAddr(ip_addr) => crate::v2::generated::PeerToBan {
                ip_address: Some(crate::v2::generated::IpAddress {
                    value: ip_addr.to_string(),
                }),
            },
        })
    }
}

impl TryFrom<generated::node_info::Details> for types::NodeDetails {
    type Error = anyhow::Error;

    fn try_from(details: generated::node_info::Details) -> Result<Self, Self::Error> {
        match details {
            generated::node_info::Details::Bootstrapper(_) => Ok(types::NodeDetails::Bootstrapper),
            generated::node_info::Details::Node(status) => {
                let Upward::Known(consensus_status) = Upward::from(status.consensus_status) else {
                    return Ok(types::NodeDetails::Node(Upward::Unknown(())));
                };
                let consensus_status = match consensus_status {
                    generated::node_info::node::ConsensusStatus::NotRunning(_) => {
                        types::NodeConsensusStatus::ConsensusNotRunning
                    }
                    generated::node_info::node::ConsensusStatus::Passive(_) => {
                        types::NodeConsensusStatus::ConsensusPassive
                    }
                    generated::node_info::node::ConsensusStatus::Active(baker) => {
                        let baker_id = baker.baker_id.require()?.into();
                        let Upward::Known(status) = Upward::from(baker.status) else {
                            return Ok(types::NodeDetails::Node(Upward::Unknown(())));
                        };

                        match status {
                            generated::node_info::baker_consensus_info::Status::PassiveCommitteeInfo(0) => types::NodeConsensusStatus::NotInCommittee(baker_id),
                            generated::node_info::baker_consensus_info::Status::PassiveCommitteeInfo(1) => types::NodeConsensusStatus::AddedButNotActiveInCommittee(baker_id),
                            generated::node_info::baker_consensus_info::Status::PassiveCommitteeInfo(2) => types::NodeConsensusStatus::AddedButWrongKeys(baker_id),
                            generated::node_info::baker_consensus_info::Status::ActiveBakerCommitteeInfo(_) => types::NodeConsensusStatus::Baker(baker_id),
                            generated::node_info::baker_consensus_info::Status::ActiveFinalizerCommitteeInfo(_) => types::NodeConsensusStatus::Finalizer(baker_id),
                            _ => anyhow::bail!("Malformed baker status")
                        }
                    }
                };
                Ok(types::NodeDetails::Node(Upward::Known(consensus_status)))
            }
        }
    }
}

impl TryFrom<generated::NodeInfo> for types::NodeInfo {
    type Error = anyhow::Error;

    fn try_from(node_info: generated::NodeInfo) -> Result<Self, Self::Error> {
        let version = semver::Version::parse(&node_info.peer_version)?;
        let local_time = chrono::DateTime::<chrono::Utc>::from(std::time::UNIX_EPOCH)
            + chrono::TimeDelta::try_milliseconds(node_info.local_time.require()?.value as i64)
                .context("Node local time out of bounds!")?;
        let uptime = chrono::Duration::try_from(types::DurationSeconds::from(
            node_info.peer_uptime.require()?.value,
        ))?;
        let network_info = node_info.network_info.require()?.try_into()?;
        let details = Upward::from(node_info.details)
            .map(types::NodeDetails::try_from)
            .transpose()?;
        Ok(types::NodeInfo {
            version,
            local_time,
            uptime,
            network_info,
            details,
        })
    }
}

/// A helper trait that is implemented by types that can be cheaply converted to
/// a [`BlockIdentifier`]. This is esentially [`Into<BlockIdentifier>`] but
/// orphan rules prevent using that exactly.
///
/// This trait makes it convenient to use block hashes as input to functions
/// that take a block identifier.
pub trait IntoBlockIdentifier {
    fn into_block_identifier(self) -> BlockIdentifier;
}

impl IntoBlockIdentifier for BlockIdentifier {
    fn into_block_identifier(self) -> BlockIdentifier {
        self
    }
}

impl<X: IntoBlockIdentifier + Copy> IntoBlockIdentifier for &X {
    fn into_block_identifier(self) -> BlockIdentifier {
        (*self).into_block_identifier()
    }
}

impl IntoBlockIdentifier for BlockHash {
    fn into_block_identifier(self) -> BlockIdentifier {
        BlockIdentifier::Given(self)
    }
}

impl IntoBlockIdentifier for AbsoluteBlockHeight {
    fn into_block_identifier(self) -> BlockIdentifier {
        BlockIdentifier::AbsoluteHeight(self)
    }
}

impl IntoBlockIdentifier for RelativeBlockHeight {
    fn into_block_identifier(self) -> BlockIdentifier {
        BlockIdentifier::RelativeHeight(self)
    }
}

impl Client {
    /// Construct a new client connection to a concordium node.
    ///
    /// # Example
    /// Creates a new client. Note the example assumes access to a local running
    /// node.
    ///
    /// ```no_run
    /// # tokio_test::block_on(async {
    /// use concordium_rust_sdk::{endpoints::Endpoint, v2::Client};
    /// use std::str::FromStr;
    ///
    /// let mut client = Client::new("http://localhost:20001").await?;
    ///
    /// # Ok::<(), anyhow::Error>(())
    /// # });
    /// ```
    pub async fn new<E>(endpoint: E) -> Result<Self, tonic::transport::Error>
    where
        E: TryInto<tonic::transport::Endpoint>,
        E::Error: Into<Box<dyn std::error::Error + Send + Sync + 'static>>,
    {
        let client = generated::queries_client::QueriesClient::connect(endpoint).await?;
        Ok(Self { client })
    }

    /// Get the information for the given account in the given block. If either
    /// the block or the account do not exist [`QueryError::NotFound`] is
    /// returned.
    pub async fn get_account_info(
        &mut self,
        acc: &AccountIdentifier,
        bi: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<QueryResponse<AccountInfo>> {
        let response = self
            .client
            .get_account_info((acc, &bi.into_block_identifier()))
            .await?;
        let block_hash = extract_metadata(&response)?;
        let response = AccountInfo::try_from(response.into_inner())?;
        Ok(QueryResponse {
            block_hash,
            response,
        })
    }

    /// Get the next sequence number for the account, with information on how
    /// reliable the information is.
    pub async fn get_next_account_sequence_number(
        &mut self,
        account_address: &AccountAddress,
    ) -> endpoints::QueryResult<types::queries::AccountNonceResponse> {
        let response = self
            .client
            .get_next_account_sequence_number(account_address)
            .await?;
        let response = types::queries::AccountNonceResponse::try_from(response.into_inner())?;
        Ok(response)
    }

    /// Get information about the current state of consensus. This is an
    /// overview of the node's current view of the chain.
    pub async fn get_consensus_info(
        &mut self,
    ) -> endpoints::QueryResult<types::queries::ConsensusInfo> {
        let response = self
            .client
            .get_consensus_info(generated::Empty::default())
            .await?;
        let response = types::queries::ConsensusInfo::try_from(response.into_inner())?;
        Ok(response)
    }

    /// Get the currently used cryptographic parameters. If the block does
    /// not exist [`QueryError::NotFound`] is returned.
    pub async fn get_cryptographic_parameters(
        &mut self,
        bi: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<QueryResponse<types::CryptographicParameters>> {
        let response = self
            .client
            .get_cryptographic_parameters(&bi.into_block_identifier())
            .await?;
        let block_hash = extract_metadata(&response)?;
        let response = types::CryptographicParameters::try_from(response.into_inner())?;
        Ok(QueryResponse {
            block_hash,
            response,
        })
    }

    /// Get the list of accounts in the given block.
    /// The stream will end when all accounts that exist in the state at the end
    /// of the given block have been returned. If the block does not exist
    /// [`QueryError::NotFound`] is returned.
    pub async fn get_account_list(
        &mut self,
        bi: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<
        QueryResponse<impl Stream<Item = Result<AccountAddress, tonic::Status>>>,
    > {
        let response = self
            .client
            .get_account_list(&bi.into_block_identifier())
            .await?;
        let block_hash = extract_metadata(&response)?;
        let stream = response.into_inner().map(|x| x.and_then(TryFrom::try_from));
        Ok(QueryResponse {
            block_hash,
            response: stream,
        })
    }

    /// Get a list of all smart contract modules. The stream will end
    /// when all modules that exist in the state at the end of the given
    /// block have been returned.
    /// If the block does not exist [`QueryError::NotFound`] is returned.
    pub async fn get_module_list(
        &mut self,
        bi: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<
        QueryResponse<impl Stream<Item = Result<ModuleReference, tonic::Status>>>,
    > {
        let response = self
            .client
            .get_module_list(&bi.into_block_identifier())
            .await?;
        let block_hash = extract_metadata(&response)?;
        let stream = response.into_inner().map(|x| x.and_then(TryFrom::try_from));
        Ok(QueryResponse {
            block_hash,
            response: stream,
        })
    }

    /// Get the source of a smart contract module.
    /// If the block or module does not exist [`QueryError::NotFound`] is
    /// returned.
    pub async fn get_module_source(
        &mut self,
        module_ref: &ModuleReference,
        bi: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<QueryResponse<types::smart_contracts::WasmModule>> {
        let response = self
            .client
            .get_module_source((module_ref, &bi.into_block_identifier()))
            .await?;
        let block_hash = extract_metadata(&response)?;
        let response = types::smart_contracts::WasmModule::try_from(response.into_inner())?;
        Ok(QueryResponse {
            block_hash,
            response,
        })
    }

    /// Get the list of smart contract instances in a given block.
    /// The stream will end when all instances that exist in the state at the
    /// end of the given block have been returned. If the block does not
    /// exist [`QueryError::NotFound`] is returned.
    pub async fn get_instance_list(
        &mut self,
        bi: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<
        QueryResponse<impl Stream<Item = Result<ContractAddress, tonic::Status>>>,
    > {
        let response = self
            .client
            .get_instance_list(&bi.into_block_identifier())
            .await?;
        let block_hash = extract_metadata(&response)?;
        let stream = response.into_inner().map(|x| x.map(From::from));
        Ok(QueryResponse {
            block_hash,
            response: stream,
        })
    }

    /// Get information about a smart contract instance as it appears at the end
    /// of the given block. If the block or instance does not exist
    /// [`QueryError::NotFound`] is returned.
    pub async fn get_instance_info(
        &mut self,
        address: ContractAddress,
        bi: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<QueryResponse<InstanceInfo>> {
        let response = self
            .client
            .get_instance_info((address, &bi.into_block_identifier()))
            .await?;
        let block_hash = extract_metadata(&response)?;
        let response = InstanceInfo::try_from(response.into_inner())?;
        Ok(QueryResponse {
            block_hash,
            response,
        })
    }

    /// Get a stream of ancestors for the provided block.
    /// Starting with the provided block itself, moving backwards until no more
    /// ancestors or the requested number of ancestors have been returned.
    pub async fn get_ancestors(
        &mut self,
        bi: impl IntoBlockIdentifier,
        limit: u64,
    ) -> endpoints::QueryResult<QueryResponse<impl Stream<Item = Result<BlockHash, tonic::Status>>>>
    {
        let response = self
            .client
            .get_ancestors((&bi.into_block_identifier(), limit))
            .await?;
        let block_hash = extract_metadata(&response)?;
        let stream = response.into_inner().map(|x| x.and_then(TryFrom::try_from));
        Ok(QueryResponse {
            block_hash,
            response: stream,
        })
    }

    /// Return a stream of blocks that are finalized from the time the query is
    /// made onward.
    /// This can be used to listen for newly finalized blocks.
    ///
    /// Note: There is no guarantee that blocks will not be skipped if the
    /// client is too slow in processing the stream, however blocks will
    /// always be sent by increasing block height.
    pub async fn get_finalized_blocks(
        &mut self,
    ) -> endpoints::QueryResult<impl Stream<Item = Result<FinalizedBlockInfo, tonic::Status>>> {
        let response = self
            .client
            .get_finalized_blocks(generated::Empty::default())
            .await?;
        let stream = response.into_inner().map(|x| match x {
            Ok(v) => {
                let block_hash = v.hash.require().and_then(TryFrom::try_from)?;
                let height = v.height.require()?.into();
                Ok(FinalizedBlockInfo { block_hash, height })
            }
            Err(x) => Err(x),
        });
        Ok(stream)
    }

    /// Get the exact state of a specific contract instance, streamed as a list
    /// of key-value pairs. The list is streamed in lexicographic order of
    /// keys.
    /// If the block or instance does not exist [`QueryError::NotFound`] is
    /// returned.
    pub async fn get_instance_state(
        &mut self,
        ca: ContractAddress,
        bi: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<
        QueryResponse<impl Stream<Item = Result<(Vec<u8>, Vec<u8>), tonic::Status>>>,
    > {
        let response = self
            .client
            .get_instance_state((ca, &bi.into_block_identifier()))
            .await?;
        let block_hash = extract_metadata(&response)?;
        let stream = response.into_inner().map(|x| match x {
            Ok(v) => {
                let key = v.key;
                let value = v.value;
                Ok((key, value))
            }
            Err(x) => Err(x),
        });
        Ok(QueryResponse {
            block_hash,
            response: stream,
        })
    }

    /// Get the value at a specific key of a contract state. In contrast to
    /// [`get_instance_state`](Self::get_instance_state) this is more efficient,
    /// but requires the user to know the specific key to look for.
    /// If the block or instance does not exist [`QueryError::NotFound`] is
    /// returned.
    pub async fn instance_state_lookup(
        &mut self,
        ca: ContractAddress,
        key: impl Into<Vec<u8>>,
        bi: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<QueryResponse<Vec<u8>>> {
        let response = self
            .client
            .instance_state_lookup((ca, &bi.into_block_identifier(), key))
            .await?;
        let block_hash = extract_metadata(&response)?;
        Ok(QueryResponse {
            block_hash,
            response: response.into_inner().value,
        })
    }

    /// Get the status of and information about a specific block item
    /// (transaction). If the block item does not exist
    /// [`QueryError::NotFound`] is returned.
    pub async fn get_block_item_status(
        &mut self,
        th: &TransactionHash,
    ) -> endpoints::QueryResult<TransactionStatus> {
        let response = self.client.get_block_item_status(th).await?;
        let response = TransactionStatus::try_from(response.into_inner())?;
        Ok(response)
    }

    /// Send a block item. A block item is either an `AccountTransaction`, which
    /// is a transaction signed and paid for by an account, a
    /// `CredentialDeployment`, which creates a new account, or
    /// `UpdateInstruction`, which is an instruction to change some
    /// parameters of the chain. Update instructions can only be sent by the
    /// governance committee.
    pub async fn send_block_item<P: PayloadLike>(
        &mut self,
        bi: &transactions::BlockItem<P>,
    ) -> endpoints::RPCResult<TransactionHash> {
        let response = self.client.send_block_item(bi).await?;
        let response = TransactionHash::try_from(response.into_inner())?;
        Ok(response)
    }

    /// Send an account transaction. This is just a helper around
    /// [`send_block_item`](Self::send_block_item) block item for convenience.
    pub async fn send_account_transaction<P: PayloadLike>(
        &mut self,
        at: transactions::AccountTransaction<P>,
    ) -> endpoints::RPCResult<TransactionHash> {
        self.send_block_item(&at.into()).await
    }

    /// Get the hash to be signed for an account transaction from the node. The
    /// hash returned can then be used for signing when constructing
    /// [`TransactionSignature`] as part of calling [`Client::send_block_item`].
    ///
    /// This is provided as a convenience to support cases where the right SDK
    /// is not available for interacting with the node.
    ///
    /// This SDK can compute the hash off-line and it is not recommended to use
    /// this endpoint, instead use [`compute_transaction_sign_hash`].
    ///
    /// [`compute_transaction_sign_hash`]:
    /// types::transactions::compute_transaction_sign_hash
    pub async fn get_account_transaction_sign_hash(
        &mut self,
        header: &transactions::TransactionHeader,
        payload: &transactions::Payload,
    ) -> endpoints::RPCResult<TransactionSignHash> {
        let response = self
            .client
            .get_account_transaction_sign_hash((header, payload))
            .await?;
        let response = TransactionSignHash::try_from(response.into_inner())?;
        Ok(response)
    }

    /// Wait until the transaction is finalized. Returns
    /// [`NotFound`](QueryError::NotFound) in case the transaction is not
    /// known to the node. In case of success, the return value is a pair of the
    /// block hash of the block that contains the transactions, and its
    /// outcome in the block.
    ///
    /// Since this can take an indefinite amount of time in general, users of
    /// this function might wish to wrap it inside
    /// [`timeout`](tokio::time::timeout) handler and handle the resulting
    /// failure.
    pub async fn wait_until_finalized(
        &mut self,
        hash: &types::hashes::TransactionHash,
    ) -> endpoints::QueryResult<(types::hashes::BlockHash, types::BlockItemSummary)> {
        let hash = *hash;
        let process_response = |response| {
            if let types::TransactionStatus::Finalized(blocks) = response {
                let mut iter = blocks.into_iter();
                if let Some(rv) = iter.next() {
                    if iter.next().is_some() {
                        Err(tonic::Status::internal(
                            "Finalized transaction finalized into multiple blocks. This cannot \
                             happen.",
                        )
                        .into())
                    } else {
                        Ok::<_, QueryError>(Some(rv))
                    }
                } else {
                    Err(tonic::Status::internal(
                        "Finalized transaction finalized into no blocks. This cannot happen.",
                    )
                    .into())
                }
            } else {
                Ok(None)
            }
        };

        match process_response(self.get_block_item_status(&hash).await?)? {
            Some(rv) => Ok(rv),
            None => {
                // if the first query did not succeed then start listening for finalized blocks.
                // and on each new block try to query the status.
                let mut blocks = self.get_finalized_blocks().await?;
                while blocks.next().await.transpose()?.is_some() {
                    if let Some(rv) = process_response(self.get_block_item_status(&hash).await?)? {
                        return Ok(rv);
                    }
                }
                Err(QueryError::NotFound)
            }
        }
    }

    /// Run the smart contract instance entrypoint in a given context and in the
    /// state at the end of the given block and return the results.
    /// If the block does not exist [`QueryError::NotFound`] is returned.
    pub async fn invoke_instance(
        &mut self,
        bi: impl IntoBlockIdentifier,
        context: &ContractContext,
    ) -> endpoints::QueryResult<QueryResponse<InvokeContractResult>> {
        let response = self
            .client
            .invoke_instance((&bi.into_block_identifier(), context))
            .await?;
        let block_hash = extract_metadata(&response)?;
        let response = InvokeContractResult::try_from(response.into_inner())?;
        Ok(QueryResponse {
            block_hash,
            response,
        })
    }

    /// Start a dry-run sequence that can be used to simulate a series of
    /// transactions and other operations on the node.
    ///
    /// Before invoking any other operations on the [`dry_run::DryRun`] object,
    /// the state must be loaded by calling
    /// [`dry_run::DryRun::load_block_state`].
    pub async fn begin_dry_run(&mut self) -> endpoints::QueryResult<dry_run::DryRun> {
        Ok(dry_run::DryRun::new(&mut self.client).await?)
    }

    /// Start a dry-run sequence that can be used to simulate a series of
    /// transactions and other operations on the node, starting from the
    /// specified block.
    pub async fn dry_run(
        &mut self,
        bi: impl IntoBlockIdentifier,
    ) -> dry_run::DryRunResult<(dry_run::DryRun, dry_run::BlockStateLoaded)> {
        let mut runner = dry_run::DryRun::new(&mut self.client).await?;
        let load_result = runner.load_block_state(bi).await?;
        Ok(WithRemainingQuota {
            inner: (runner, load_result.inner),
            quota_remaining: load_result.quota_remaining,
        })
    }

    /// Get information, such as height, timings, and transaction counts for the
    /// given block. If the block does not exist [`QueryError::NotFound`] is
    /// returned.
    pub async fn get_block_info(
        &mut self,
        bi: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<QueryResponse<types::queries::BlockInfo>> {
        let response = self
            .client
            .get_block_info(&bi.into_block_identifier())
            .await?;
        let block_hash = extract_metadata(&response)?;
        let response = types::queries::BlockInfo::try_from(response.into_inner())?;
        Ok(QueryResponse {
            block_hash,
            response,
        })
    }

    /// Get information about whether a block identified by `bi` is a payday
    /// block or not. This will always return `false` for blocks produced prior
    /// to protocol version 4. If the block does not exits
    /// [`QueryError::NotFound`] is returned.
    pub async fn is_payday_block(
        &mut self,
        bi: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<QueryResponse<bool>> {
        let mut special_events = self.get_block_special_events(bi).await?;
        let block_hash = special_events.block_hash;

        while let Some(event) = special_events.response.next().await.transpose()? {
            let Upward::Known(event) = event else {
                // Ignore new unknown block special events.
                continue;
            };
            let has_payday_event = matches!(
                event,
                SpecialTransactionOutcome::PaydayPoolReward { .. }
                    | SpecialTransactionOutcome::PaydayAccountReward { .. }
                    | SpecialTransactionOutcome::PaydayFoundationReward { .. }
            );

            if has_payday_event {
                return Ok(QueryResponse {
                    block_hash,
                    response: true,
                });
            };
        }

        Ok(QueryResponse {
            block_hash,
            response: false,
        })
    }

    /// Get all the bakers at the end of the given block.
    /// If the block does not exist [`QueryError::NotFound`] is returned.
    pub async fn get_baker_list(
        &mut self,
        bi: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<
        QueryResponse<impl Stream<Item = Result<types::BakerId, tonic::Status>>>,
    > {
        let response = self
            .client
            .get_baker_list(&bi.into_block_identifier())
            .await?;
        let block_hash = extract_metadata(&response)?;
        let stream = response.into_inner().map(|x| x.map(From::from));
        Ok(QueryResponse {
            block_hash,
            response: stream,
        })
    }

    /// Get information about a given pool at the end of a given block.
    /// If the block does not exist or is prior to protocol version 4 then
    /// [`QueryError::NotFound`] is returned.
    pub async fn get_pool_info(
        &mut self,
        block_id: impl IntoBlockIdentifier,
        baker_id: types::BakerId,
    ) -> endpoints::QueryResult<QueryResponse<types::BakerPoolStatus>> {
        let response = self
            .client
            .get_pool_info((&block_id.into_block_identifier(), baker_id))
            .await?;
        let block_hash = extract_metadata(&response)?;
        let response = types::BakerPoolStatus::try_from(response.into_inner())?;
        Ok(QueryResponse {
            block_hash,
            response,
        })
    }

    /// Get information about the passive delegators at the end of a given
    /// block.
    /// If the block does not exist or is prior to protocol version 4 then
    /// [`QueryError::NotFound`] is returned.
    pub async fn get_passive_delegation_info(
        &mut self,
        block_id: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<QueryResponse<types::PassiveDelegationStatus>> {
        let response = self
            .client
            .get_passive_delegation_info(&block_id.into_block_identifier())
            .await?;
        let block_hash = extract_metadata(&response)?;
        let response = types::PassiveDelegationStatus::try_from(response.into_inner())?;
        Ok(QueryResponse {
            block_hash,
            response,
        })
    }

    /// Get a list of live blocks at a given height.
    pub async fn get_blocks_at_height(
        &mut self,
        blocks_at_height_input: &endpoints::BlocksAtHeightInput,
    ) -> endpoints::QueryResult<Vec<BlockHash>> {
        let response = self
            .client
            .get_blocks_at_height(blocks_at_height_input)
            .await?;
        let blocks = response
            .into_inner()
            .blocks
            .into_iter()
            .map(TryFrom::try_from)
            .collect::<Result<_, tonic::Status>>()?;
        Ok(blocks)
    }

    /// Get information about tokenomics at the end of a given block.
    /// If the block does not exist [`QueryError::NotFound`] is returned.
    pub async fn get_tokenomics_info(
        &mut self,
        block_id: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<QueryResponse<types::RewardsOverview>> {
        let response = self
            .client
            .get_tokenomics_info(&block_id.into_block_identifier())
            .await?;
        let block_hash = extract_metadata(&response)?;
        let response = types::RewardsOverview::try_from(response.into_inner())?;
        Ok(QueryResponse {
            block_hash,
            response,
        })
    }

    /// Get the registered delegators of a given pool at the end of a given
    /// block.
    /// If the block or baker ID does not exist [`QueryError::NotFound`] is
    /// returned, and if the block is baked prior to protocol version 4
    /// [`QueryError::RPCError`] with status [`Code::InvalidArgument`] is
    /// returned. The stream will end when all the delegators have been
    /// returned for the given block.
    ///
    /// In contrast to the [Client::get_pool_delegators_reward_period] which
    /// returns delegators that are fixed for the reward period of the
    /// block, this endpoint returns the list of delegators that are
    /// registered in the block. Any changes to delegators are immediately
    /// visible in this list.
    pub async fn get_pool_delegators(
        &mut self,
        bi: impl IntoBlockIdentifier,
        baker_id: types::BakerId,
    ) -> endpoints::QueryResult<
        QueryResponse<impl Stream<Item = Result<types::DelegatorInfo, tonic::Status>>>,
    > {
        let response = self
            .client
            .get_pool_delegators((&bi.into_block_identifier(), baker_id))
            .await?;
        let block_hash = extract_metadata(&response)?;
        let stream = response.into_inner().map(|result| match result {
            Ok(delegator) => delegator.try_into(),
            Err(err) => Err(err),
        });
        Ok(QueryResponse {
            block_hash,
            response: stream,
        })
    }

    /// Get the fixed delegators of a given pool for the reward period of the
    /// given block.
    /// If the block or baker ID does not exist [`QueryError::NotFound`] is
    /// returned, and if the block is baked prior to protocol version 4
    /// [`QueryError::RPCError`] with status [`Code::InvalidArgument`] is
    /// returned. The stream will end when all the delegators have been
    /// returned.
    ///
    /// In contrast to the [Client::get_pool_delegators] which
    /// returns delegators registered for the given block, this endpoint
    /// returns the fixed delegators contributing stake in the reward period
    /// containing the given block.
    pub async fn get_pool_delegators_reward_period(
        &mut self,
        bi: impl IntoBlockIdentifier,
        baker_id: types::BakerId,
    ) -> endpoints::QueryResult<
        QueryResponse<impl Stream<Item = Result<types::DelegatorRewardPeriodInfo, tonic::Status>>>,
    > {
        let response = self
            .client
            .get_pool_delegators_reward_period((&bi.into_block_identifier(), baker_id))
            .await?;
        let block_hash = extract_metadata(&response)?;
        let stream = response.into_inner().map(|result| match result {
            Ok(delegator) => delegator.try_into(),
            Err(err) => Err(err),
        });
        Ok(QueryResponse {
            block_hash,
            response: stream,
        })
    }

    /// Get the registered passive delegators at the end of a given block.
    /// If the block does not exist [`QueryError::NotFound`] is returned, and if
    /// the block is baked prior to protocol version 4 [`QueryError::
    /// RPCError`] with status [`Code::InvalidArgument`] is returned. The stream
    /// will end when all the delegators have been returned.
    ///
    /// In contrast to the [`Client::get_passive_delegators_reward_period`]
    /// which returns delegators that are fixed for the reward period of the
    /// block, this endpoint returns the list of delegators that are
    /// registered in the block. Any changes to delegators are immediately
    /// visible in this list.
    pub async fn get_passive_delegators(
        &mut self,
        bi: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<
        QueryResponse<impl Stream<Item = Result<types::DelegatorInfo, tonic::Status>>>,
    > {
        let response = self
            .client
            .get_passive_delegators(&bi.into_block_identifier())
            .await?;
        let block_hash = extract_metadata(&response)?;
        let stream = response.into_inner().map(|result| match result {
            Ok(delegator) => delegator.try_into(),
            Err(err) => Err(err),
        });
        Ok(QueryResponse {
            block_hash,
            response: stream,
        })
    }

    /// Get the fixed passive delegators for the reward period of the given
    /// block.
    /// If the block does not exist [`QueryError::NotFound`] is returned.
    /// If the block is baked prior to protocol version 4,
    /// [`QueryError::RPCError`] with status [`Code::InvalidArgument`] is
    /// returned. The stream will end when all the delegators have been
    /// returned.
    ///
    /// In contrast to the `GetPassiveDelegators` which returns delegators
    /// registered for the given block, this endpoint returns the fixed
    /// delegators contributing stake in the reward period containing the
    /// given block.
    pub async fn get_passive_delegators_reward_period(
        &mut self,
        bi: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<
        QueryResponse<impl Stream<Item = Result<types::DelegatorRewardPeriodInfo, tonic::Status>>>,
    > {
        let response = self
            .client
            .get_passive_delegators_reward_period(&bi.into_block_identifier())
            .await?;
        let block_hash = extract_metadata(&response)?;
        let stream = response.into_inner().map(|result| match result {
            Ok(delegator) => delegator.try_into(),
            Err(err) => Err(err),
        });
        Ok(QueryResponse {
            block_hash,
            response: stream,
        })
    }

    /// Get the current branches of blocks starting from and including the last
    /// finalized block.
    ///
    /// Branches are all live blocks that are successors of the last finalized
    /// block. In particular this means that blocks which do not have a
    /// parent are not included in this response.
    pub async fn get_branches(&mut self) -> endpoints::QueryResult<types::queries::Branch> {
        let response = self
            .client
            .get_branches(generated::Empty::default())
            .await?;
        let response = types::queries::Branch::try_from(response.into_inner())?;
        Ok(response)
    }

    /// Get information related to the baker election for a particular block.
    /// If the block does not exist [`QueryError::NotFound`] is returned.
    pub async fn get_election_info(
        &mut self,
        bi: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<QueryResponse<types::BirkParameters>> {
        let response = self
            .client
            .get_election_info(&bi.into_block_identifier())
            .await?;
        let block_hash = extract_metadata(&response)?;
        let response = types::BirkParameters::try_from(response.into_inner())?;
        Ok(QueryResponse {
            block_hash,
            response,
        })
    }

    /// Get the identity providers registered as of the end of a given block.
    /// If the block does not exist [`QueryError::NotFound`] is returned.
    /// The stream will end when all the identity providers have been returned.
    pub async fn get_identity_providers(
        &mut self,
        bi: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<
        QueryResponse<
            impl Stream<
                Item = Result<
                    crate::id::types::IpInfo<crate::id::constants::IpPairing>,
                    tonic::Status,
                >,
            >,
        >,
    > {
        let response = self
            .client
            .get_identity_providers(&bi.into_block_identifier())
            .await?;
        let block_hash = extract_metadata(&response)?;
        let stream = response.into_inner().map(|result| match result {
            Ok(ip_info) => ip_info.try_into(),
            Err(err) => Err(err),
        });
        Ok(QueryResponse {
            block_hash,
            response: stream,
        })
    }

    /// Get the list of anonymity revokers in the given block.
    /// If the block does not exist [`QueryError::NotFound`] is returned.
    /// The stream will end when all the anonymity revokers have been returned.
    pub async fn get_anonymity_revokers(
        &mut self,
        bi: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<
        QueryResponse<
            impl Stream<
                Item = Result<
                    crate::id::types::ArInfo<crate::id::constants::ArCurve>,
                    tonic::Status,
                >,
            >,
        >,
    > {
        let response = self
            .client
            .get_anonymity_revokers(&bi.into_block_identifier())
            .await?;
        let block_hash = extract_metadata(&response)?;
        let stream = response.into_inner().map(|result| match result {
            Ok(ar_info) => ar_info.try_into(),
            Err(err) => Err(err),
        });
        Ok(QueryResponse {
            block_hash,
            response: stream,
        })
    }

    /// Get the list of transactions hashes for transactions that claim to be
    /// from the given account, but which are not yet finalized.
    /// They are either committed to a block or still pending.
    /// The stream will end when all the non-finalized transaction hashes have
    /// been returned. If the account does not exist an empty list will be
    /// returned.
    ///
    /// This endpoint is not expected to return a large amount of data in most
    /// cases, but in bad network conditions it might.
    pub async fn get_account_non_finalized_transactions(
        &mut self,
        account_address: &AccountAddress,
    ) -> endpoints::QueryResult<impl Stream<Item = Result<TransactionHash, tonic::Status>>> {
        let response = self
            .client
            .get_account_non_finalized_transactions(account_address)
            .await?;
        let stream = response.into_inner().map(|result| match result {
            Ok(transaction_hash) => transaction_hash.try_into(),
            Err(err) => Err(err),
        });
        Ok(stream)
    }

    /// Get the block items included in a given block.
    /// If the block does not exist [`QueryError::NotFound`] is returned.
    /// The stream will end when all the block items in the given block have
    /// been returned.
    /// To allow for forward-compatibility [`Upward::Unknown`] is returned
    /// if/when encountering a unknown future type of [`BlockItem`].
    pub async fn get_block_items(
        &mut self,
        bi: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<
        QueryResponse<impl Stream<Item = Result<Upward<BlockItem<EncodedPayload>>, tonic::Status>>>,
    > {
        let response = self
            .client
            .get_block_items(&bi.into_block_identifier())
            .await?;
        let block_hash = extract_metadata(&response)?;
        let stream = response.into_inner().map(|result| match result {
            Ok(summary) => summary.try_into(),
            Err(err) => Err(err),
        });
        Ok(QueryResponse {
            block_hash,
            response: stream,
        })
    }

    /// Get the specific **block item** if it is finalized.
    /// If the transaction does not exist in a finalized block
    /// [`QueryError::NotFound`] is returned.
    ///
    /// **Note that this is not an efficient method** since the node API does
    /// not allow for retrieving just the specific block item, but rather
    /// requires retrieving the full block. Use it for testing and debugging
    /// only.
    ///
    /// The return value is a triple of the [`BlockItem`], the hash of the block
    /// in which it is finalized, and the outcome in the form of
    /// [`BlockItemSummary`].
    /// To allow for forward-compatibility [`Upward::Unknown`] is returned
    /// if/when encountering a unknown future type of [`BlockItem`].
    pub async fn get_finalized_block_item(
        &mut self,
        th: TransactionHash,
    ) -> endpoints::QueryResult<(
        Upward<BlockItem<EncodedPayload>>,
        BlockHash,
        BlockItemSummary,
    )> {
        let status = self.get_block_item_status(&th).await?;
        let Some((bh, status)) = status.is_finalized() else {
            return Err(QueryError::NotFound);
        };
        let mut response = self
            .client
            .get_block_items(&bh.into_block_identifier())
            .await?
            .into_inner();
        while let Some(tx) = response.try_next().await? {
            let tx_hash = TransactionHash::try_from(tx.hash.clone().require()?)?;
            if tx_hash == th {
                return Ok((tx.try_into()?, *bh, status.clone()));
            }
        }
        Err(endpoints::QueryError::NotFound)
    }

    /// Shut down the node.
    /// Return a GRPC error if the shutdown failed.
    pub async fn shutdown(&mut self) -> endpoints::RPCResult<()> {
        self.client.shutdown(generated::Empty::default()).await?;
        Ok(())
    }

    /// Suggest a peer to connect to the submitted peer details.
    /// This, if successful, adds the peer to the list of given addresses.
    /// Otherwise return a GRPC error.
    ///
    /// Note: The peer might not be connected to instantly, in that case
    /// the node will try to establish the connection in near future. This
    /// function returns a GRPC status 'Ok' in this case.
    pub async fn peer_connect(&mut self, addr: std::net::SocketAddr) -> endpoints::RPCResult<()> {
        let peer_connection = generated::IpSocketAddress {
            ip: Some(generated::IpAddress {
                value: addr.ip().to_string(),
            }),
            port: Some(generated::Port {
                value: addr.port() as u32,
            }),
        };
        self.client.peer_connect(peer_connection).await?;
        Ok(())
    }

    /// Disconnect from the peer and remove them from the given addresses list
    /// if they are on it. Return if the request was processed successfully.
    /// Otherwise return a GRPC error.
    pub async fn peer_disconnect(
        &mut self,
        addr: std::net::SocketAddr,
    ) -> endpoints::RPCResult<()> {
        let peer_connection = generated::IpSocketAddress {
            ip: Some(generated::IpAddress {
                value: addr.ip().to_string(),
            }),
            port: Some(generated::Port {
                value: addr.port() as u32,
            }),
        };
        self.client.peer_disconnect(peer_connection).await?;
        Ok(())
    }

    /// Get a vector of the banned peers.
    pub async fn get_banned_peers(
        &mut self,
    ) -> endpoints::RPCResult<Vec<super::types::network::BannedPeer>> {
        Ok(self
            .client
            .get_banned_peers(generated::Empty::default())
            .await?
            .into_inner()
            .peers
            .into_iter()
            .map(super::types::network::BannedPeer::try_from)
            .collect::<anyhow::Result<Vec<super::types::network::BannedPeer>>>()?)
    }

    /// Ban a peer.
    /// When successful return `Ok(())`, and otherwise return an error
    /// describing the issue.
    pub async fn ban_peer(
        &mut self,
        peer_to_ban: super::types::network::PeerToBan,
    ) -> endpoints::RPCResult<()> {
        self.client.ban_peer(peer_to_ban).await?;
        Ok(())
    }

    /// Unban a peer.
    /// When successful return `Ok(())`, and otherwise return an error
    /// describing the issue.
    pub async fn unban_peer(
        &mut self,
        banned_peer: &super::types::network::BannedPeer,
    ) -> endpoints::RPCResult<()> {
        self.client.unban_peer(banned_peer).await?;
        Ok(())
    }

    /// Start a network dump if the feature is enabled on the node.
    /// This writes all the network packets into the given file.
    /// Return `Ok(())` if a network dump has been initiated, and an error
    /// otherwise.
    ///
    /// * file - The file to write to.
    /// * raw - Whether raw packets should be included in the dump or not.
    ///
    /// Note. If the feature 'network_dump' is not enabled on the node then this
    /// will return a 'Precondition failed' error.
    pub async fn dump_start(
        &mut self,
        file: &std::path::Path,
        raw: bool,
    ) -> endpoints::RPCResult<()> {
        let file_str = file.to_str().ok_or_else(|| {
            tonic::Status::invalid_argument(
                "The provided path cannot is not a valid UTF8 string, so cannot be used.",
            )
        })?;

        self.client
            .dump_start(generated::DumpRequest {
                file: file_str.to_string(),
                raw,
            })
            .await?;
        Ok(())
    }

    /// Stop an ongoing network dump.
    /// Return nothing if it was successfully stopped, and otherwise return an
    /// error.
    ///
    /// Note. If the feature 'network_dump' is not enabled on the node then this
    /// will return a 'Precondition failed' error.
    pub async fn dump_stop(&mut self) -> endpoints::RPCResult<()> {
        self.client.dump_stop(generated::Empty::default()).await?;
        Ok(())
    }

    /// Get a list of the peers that the node is connected to and associated
    /// network related information for each peer.
    pub async fn get_peers_info(&mut self) -> endpoints::RPCResult<types::network::PeersInfo> {
        let response = self
            .client
            .get_peers_info(generated::Empty::default())
            .await?;
        let peers_info = types::network::PeersInfo::try_from(response.into_inner())?;
        Ok(peers_info)
    }

    /// Retrieve information about the node.
    /// The response contains meta information about the node
    /// such as the version of the software, the local time of the node etc.
    ///
    /// The response also yields network related information such as the node
    /// ID, bytes sent/received etc.
    ///
    /// Finally depending on the type of the node (regular node or
    /// 'bootstrapper') the response also yields baking information if
    /// the node is configured with baker credentials.
    ///
    /// Bootstrappers do no reveal any consensus information as they do not run
    /// the consensus protocol.
    pub async fn get_node_info(&mut self) -> endpoints::RPCResult<types::NodeInfo> {
        let response = self
            .client
            .get_node_info(generated::Empty::default())
            .await?;
        let node_info = types::NodeInfo::try_from(response.into_inner())?;
        Ok(node_info)
    }

    /// Get the projected earliest time a baker wins the opportunity to bake a
    /// block.
    /// If the baker is not a baker for the current reward period then then the
    /// timestamp returned is the projected time of the first block of the
    /// new reward period.
    /// Note that the endpoint is only available on a node running at least
    /// protocol version 6.
    pub async fn get_baker_earliest_win_time(
        &mut self,
        bid: types::BakerId,
    ) -> endpoints::RPCResult<chrono::DateTime<chrono::Utc>> {
        let ts = self.client.get_baker_earliest_win_time(bid).await?;
        let local_time = ts.into_inner().try_into()?;
        Ok(local_time)
    }

    /// Get the transaction events in a given block. If the block does not exist
    /// [`QueryError::NotFound`] is returned. The stream will end when all the
    /// transaction events for a given block have been returned.
    pub async fn get_block_transaction_events(
        &mut self,
        bi: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<
        QueryResponse<impl Stream<Item = Result<types::BlockItemSummary, tonic::Status>>>,
    > {
        let response = self
            .client
            .get_block_transaction_events(&bi.into_block_identifier())
            .await?;
        let block_hash = extract_metadata(&response)?;
        let stream = response.into_inner().map(|result| match result {
            Ok(summary) => summary.try_into(),
            Err(err) => Err(err),
        });
        Ok(QueryResponse {
            block_hash,
            response: stream,
        })
    }

    /// Get a the special events in a given block. If the block does not exist
    /// [`QueryError::NotFound`] is returned. The stream will end when all the
    /// special events for a given block have been returned.
    ///
    /// These are events generated by the protocol, such as minting and reward
    /// payouts. They are not directly generated by any transaction.
    pub async fn get_block_special_events(
        &mut self,
        bi: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<
        QueryResponse<
            impl Stream<Item = Result<Upward<types::SpecialTransactionOutcome>, tonic::Status>>,
        >,
    > {
        let response = self
            .client
            .get_block_special_events(&bi.into_block_identifier())
            .await?;
        let block_hash = extract_metadata(&response)?;
        let stream = response.into_inner().map(|result| match result {
            Ok(summary) => summary.try_into(),
            Err(err) => Err(err),
        });
        Ok(QueryResponse {
            block_hash,
            response: stream,
        })
    }

    /// Get the pending updates to chain parameters at the end of a given block.
    /// If the block does not exist [`QueryError::NotFound`] is returned.
    /// The stream will end when all the pending updates for a given block have
    /// been returned.
    pub async fn get_block_pending_updates(
        &mut self,
        bi: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<
        QueryResponse<impl Stream<Item = Result<types::queries::PendingUpdate, tonic::Status>>>,
    > {
        let response = self
            .client
            .get_block_pending_updates(&bi.into_block_identifier())
            .await?;
        let block_hash = extract_metadata(&response)?;
        let stream = response.into_inner().map(|result| match result {
            Ok(update) => update.try_into(),
            Err(err) => Err(err),
        });
        Ok(QueryResponse {
            block_hash,
            response: stream,
        })
    }

    /// Get the winning bakers of an historical `Epoch`.
    /// Hence, when this function is invoked using [`EpochIdentifier::Block`]
    /// and the [`BlockIdentifier`] is either [`BlockIdentifier::Best`] or
    /// [`BlockIdentifier::LastFinal`], then [`tonic::Code::Unavailable`] is
    /// returned, as these identifiers are not historical by definition.
    ///
    /// The stream ends when there
    /// are no more rounds for the epoch specified. This only works for
    /// epochs in at least protocol version 6. Note that the endpoint is
    /// only available on a node running at least protocol version 6.
    pub async fn get_winning_bakers_epoch(
        &mut self,
        ei: impl Into<EpochIdentifier>,
    ) -> endpoints::QueryResult<impl Stream<Item = Result<types::WinningBaker, tonic::Status>>>
    {
        let response = self.client.get_winning_bakers_epoch(&ei.into()).await?;
        let stream = response.into_inner().map(|result| match result {
            Ok(wb) => wb.try_into(),
            Err(err) => Err(err),
        });
        Ok(stream)
    }

    /// Get the first block of the epoch.
    pub async fn get_first_block_epoch(
        &mut self,
        ei: impl Into<EpochIdentifier>,
    ) -> endpoints::QueryResult<BlockHash> {
        let response = self.client.get_first_block_epoch(&ei.into()).await?;
        Ok(response.into_inner().try_into()?)
    }

    /// Get the detailed status of the consensus. This is only available for
    /// consensus version 1. If the genesis index is not specified, the
    /// status for the current genesis index is returned.
    pub async fn get_consensus_detailed_status(
        &mut self,
        genesis_index: Option<GenesisIndex>,
    ) -> endpoints::RPCResult<ConsensusDetailedStatus> {
        let query = generated::ConsensusDetailedStatusQuery {
            genesis_index: genesis_index.map(Into::into),
        };
        let response = self.client.get_consensus_detailed_status(query).await?;
        Ok(response.into_inner().try_into()?)
    }

    /// Get next available sequence numbers for updating chain parameters after
    /// a given block. If the block does not exist then [`QueryError::NotFound`]
    /// is returned.
    pub async fn get_next_update_sequence_numbers(
        &mut self,
        block_id: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<QueryResponse<types::queries::NextUpdateSequenceNumbers>> {
        let response = self
            .client
            .get_next_update_sequence_numbers(&block_id.into_block_identifier())
            .await?;
        let block_hash = extract_metadata(&response)?;
        let response = types::queries::NextUpdateSequenceNumbers::try_from(response.into_inner())?;
        Ok(QueryResponse {
            block_hash,
            response,
        })
    }

    /// Get all accounts that have scheduled releases, with the timestamp of the
    /// first pending scheduled release for that account. (Note, this only
    /// identifies accounts by index, and only indicates the first pending
    /// release for each account.)
    pub async fn get_scheduled_release_accounts(
        &mut self,
        block_id: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<
        QueryResponse<impl Stream<Item = Result<AccountPending, tonic::Status>>>,
    > {
        let response = self
            .client
            .get_scheduled_release_accounts(&block_id.into_block_identifier())
            .await?;
        let block_hash = extract_metadata(&response)?;
        let stream = response.into_inner().map(|result| match result {
            Ok(pending) => pending.try_into(),
            Err(err) => Err(err),
        });
        Ok(QueryResponse {
            block_hash,
            response: stream,
        })
    }

    /// Get all accounts that have stake in cooldown, with the timestamp of the
    /// first pending cooldown expiry for each account. (Note, this only
    /// identifies accounts by index, and only indicates the first pending
    /// cooldown for each account.) Prior to protocol version 7, the
    /// resulting stream will always be empty.
    pub async fn get_cooldown_accounts(
        &mut self,
        block_id: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<
        QueryResponse<impl Stream<Item = Result<AccountPending, tonic::Status>>>,
    > {
        let response = self
            .client
            .get_cooldown_accounts(&block_id.into_block_identifier())
            .await?;
        let block_hash = extract_metadata(&response)?;
        let stream = response.into_inner().map(|result| match result {
            Ok(pending) => pending.try_into(),
            Err(err) => Err(err),
        });
        Ok(QueryResponse {
            block_hash,
            response: stream,
        })
    }

    /// Get all accounts that have stake in pre-cooldown.
    /// (This only identifies accounts by index.)
    /// Prior to protocol version 7, the resulting stream will always be empty.
    pub async fn get_pre_cooldown_accounts(
        &mut self,
        block_id: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<
        QueryResponse<impl Stream<Item = Result<AccountIndex, tonic::Status>>>,
    > {
        let response = self
            .client
            .get_pre_cooldown_accounts(&block_id.into_block_identifier())
            .await?;
        let block_hash = extract_metadata(&response)?;
        let stream = response.into_inner().map(|result| match result {
            Ok(account) => Ok(account.into()),
            Err(err) => Err(err),
        });
        Ok(QueryResponse {
            block_hash,
            response: stream,
        })
    }

    /// Get all accounts that have stake in pre-pre-cooldown.
    /// (This only identifies accounts by index.)
    /// Prior to protocol version 7, the resulting stream will always be empty.
    pub async fn get_pre_pre_cooldown_accounts(
        &mut self,
        block_id: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<
        QueryResponse<impl Stream<Item = Result<AccountIndex, tonic::Status>>>,
    > {
        let response = self
            .client
            .get_pre_pre_cooldown_accounts(&block_id.into_block_identifier())
            .await?;
        let block_hash = extract_metadata(&response)?;
        let stream = response.into_inner().map(|result| match result {
            Ok(account) => Ok(account.into()),
            Err(err) => Err(err),
        });
        Ok(QueryResponse {
            block_hash,
            response: stream,
        })
    }

    /// Get the chain parameters in effect after a given block.
    /// If the block does not exist [`QueryError::NotFound`] is returned.
    pub async fn get_block_chain_parameters(
        &mut self,
        block_id: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<QueryResponse<ChainParameters>> {
        let response = self
            .client
            .get_block_chain_parameters(&block_id.into_block_identifier())
            .await?;
        let block_hash = extract_metadata(&response)?;
        let response = ChainParameters::try_from(response.into_inner())?;
        Ok(QueryResponse {
            block_hash,
            response,
        })
    }

    /// For a non-genesis block, this returns the
    /// [`QuorumCertificate`](block_certificates::QuorumCertificate), a
    /// [`TimeoutCertificate`](block_certificates::TimeoutCertificate) (if
    /// present)
    /// and [`EpochFinalizationEntry`](block_certificates::EpochFinalizationEntry) (if
    /// present).
    /// If the block being pointed to is *not* from protocol version 6 or
    /// above, then [`InvalidArgument`](`tonic::Code::InvalidArgument`)
    /// is returned.
    pub async fn get_block_certificates(
        &mut self,
        bi: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<QueryResponse<block_certificates::BlockCertificates>> {
        let response = self
            .client
            .get_block_certificates(&bi.into_block_identifier())
            .await?;
        let block_hash = extract_metadata(&response)?;
        let response = block_certificates::BlockCertificates::try_from(response.into_inner())?;
        Ok(QueryResponse {
            block_hash,
            response,
        })
    }

    /// Get the information about a finalization record in a block.
    /// A block can contain zero or one finalization record. If a record is
    /// contained then this query will return information about the finalization
    /// session that produced it, including the finalizers eligible for the
    /// session, their power, and whether they signed this particular record. If
    /// the block does not exist [`QueryError::NotFound`] is returned.
    pub async fn get_block_finalization_summary(
        &mut self,
        block_id: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<QueryResponse<Option<types::FinalizationSummary>>> {
        let response = self
            .client
            .get_block_finalization_summary(&block_id.into_block_identifier())
            .await?;
        let block_hash = extract_metadata(&response)?;
        let response = response.into_inner().try_into()?;
        Ok(QueryResponse {
            block_hash,
            response,
        })
    }

    /// Get a continous stream of finalized blocks starting from a given height.
    /// This function starts a background task (a `tokio` task) that listens for
    /// new finalized blocks. This task is killed when the
    /// [`FinalizedBlocksStream`] is dropped.
    pub async fn get_finalized_blocks_from(
        &mut self,
        start_height: AbsoluteBlockHeight,
    ) -> endpoints::QueryResult<FinalizedBlocksStream> {
        let mut fin_height = self.get_consensus_info().await?.last_finalized_block_height;
        let (sender, receiver) = tokio::sync::mpsc::channel(100);
        let mut client = self.clone();
        let handle = tokio::spawn(async move {
            let mut height = start_height;
            loop {
                if height > fin_height {
                    fin_height = client
                        .get_consensus_info()
                        .await?
                        .last_finalized_block_height;
                    if height > fin_height {
                        break;
                    }
                } else {
                    let mut bi = client.get_blocks_at_height(&height.into()).await?;
                    let block_hash = bi.pop().ok_or(endpoints::QueryError::NotFound)?;
                    let info = FinalizedBlockInfo { block_hash, height };
                    if sender.send(info).await.is_err() {
                        return Ok(());
                    }
                    height = height.next();
                }
            }
            let mut stream = client.get_finalized_blocks().await?;
            while let Some(fbi) = stream.next().await.transpose()? {
                // recover missed blocks.
                while height < fbi.height {
                    let mut bi = client.get_blocks_at_height(&height.into()).await?;
                    let block_hash = bi.pop().ok_or(endpoints::QueryError::NotFound)?;
                    let info = FinalizedBlockInfo { block_hash, height };
                    if sender.send(info).await.is_err() {
                        return Ok(());
                    }
                    height = height.next();
                }
                if sender.send(fbi).await.is_err() {
                    return Ok(());
                }
                height = height.next();
            }
            Ok(())
        });
        Ok(FinalizedBlocksStream { handle, receiver })
    }

    /// Find a block in which the account was created, if it exists and is
    /// finalized. The return value is a triple of the absolute block height and
    /// the corresponding block hash, and the account information at the
    /// end of that block. The block is the first block in which the account
    /// appears.
    ///
    /// Note that this is not necessarily the initial state of the account
    /// since there can be transactions updating it in the same block that it is
    /// created.
    ///
    /// Optional bounds can be provided, and the search will only
    /// consider blocks in that range. If the lower bound is not
    /// provided it defaults to 0, if the upper bound is not provided it
    /// defaults to the last finalized block at the time of the call.
    ///
    /// If the account cannot be found [`QueryError::NotFound`] is returned.
    pub async fn find_account_creation(
        &mut self,
        range: impl std::ops::RangeBounds<AbsoluteBlockHeight>,
        addr: AccountAddress,
    ) -> QueryResult<(AbsoluteBlockHeight, BlockHash, AccountInfo)> {
        self.find_at_lowest_height(range, |mut client, height| async move {
            match client.get_account_info(&addr.into(), &height).await {
                Ok(ii) => Ok(Some((height, ii.block_hash, ii.response))),
                Err(e) if e.is_not_found() => Ok(None),
                Err(e) => Err(e),
            }
        })
        .await
    }

    /// Find a block in which the instance was created, if it exists and is
    /// finalized. The return value is a triple of the absolute block height and
    /// the corresponding block hash, and the instance information at the
    /// end of that block. The block is the first block in which the instance
    /// appears.
    ///
    /// Note that this is not necessarily the initial state of the instance
    /// since there can be transactions updating the instance in the same block
    /// as the initialization transaction.
    ///
    /// Optional bounds can be provided, and the search will only
    /// consider blocks in that range. If the lower bound is not
    /// provided it defaults to 0, if the upper bound is not provided it
    /// defaults to the last finalized block at the time of the call.
    ///
    /// If the instance cannot be found [`QueryError::NotFound`] is returned.
    pub async fn find_instance_creation(
        &mut self,
        range: impl std::ops::RangeBounds<AbsoluteBlockHeight>,
        addr: ContractAddress,
    ) -> QueryResult<(AbsoluteBlockHeight, BlockHash, InstanceInfo)> {
        self.find_at_lowest_height(range, |mut client, height| async move {
            match client.get_instance_info(addr, &height).await {
                Ok(ii) => Ok(Some((height, ii.block_hash, ii.response))),
                Err(e) if e.is_not_found() => Ok(None),
                Err(e) => Err(e),
            }
        })
        .await
    }

    /// Find the first (i.e., earliest) finalized block whose slot time is no
    /// earlier than the specified time. If a block is not found return
    /// [`QueryError::NotFound`].
    ///
    /// The search is limited to the bounds specified. If the lower bound is not
    /// provided it defaults to 0, if the upper bound is not provided it
    /// defaults to the last finalized block at the time of the call.
    pub async fn find_first_finalized_block_no_earlier_than(
        &mut self,
        range: impl std::ops::RangeBounds<AbsoluteBlockHeight>,
        time: chrono::DateTime<chrono::Utc>,
    ) -> QueryResult<types::queries::BlockInfo> {
        self.find_at_lowest_height(range, move |mut client, height| async move {
            let info = client.get_block_info(&height).await?.response;
            if info.block_slot_time >= time {
                Ok(Some(info))
            } else {
                Ok(None)
            }
        })
        .await
    }

    /// Find a **finalized** block with lowest height that satisfies the given
    /// condition. If a block is not found return [`QueryError::NotFound`].
    ///
    /// The `test` method should return `Some` if the object is found in the
    /// block, and `None` otherwise. It can also signal errors which will
    /// terminate search immediately.
    ///
    /// The precondition for this method is that the `test` method is monotone,
    /// i.e., if block at height `h` satisfies the test then also a block at
    /// height `h+1` does.
    /// If this precondition does not hold then the return value from this
    /// method is unspecified.
    ///
    /// The search is limited to at most the given range, the upper bound is
    /// always at most the last finalized block at the time of the call. If the
    /// lower bound is not provided it defaults to 0, if the upper bound is
    /// not provided it defaults to the last finalized block at the time of
    /// the call.
    pub async fn find_at_lowest_height<A, F: futures::Future<Output = QueryResult<Option<A>>>>(
        &mut self,
        range: impl std::ops::RangeBounds<AbsoluteBlockHeight>,
        test: impl Fn(Self, AbsoluteBlockHeight) -> F,
    ) -> QueryResult<A> {
        let mut start = match range.start_bound() {
            std::ops::Bound::Included(s) => u64::from(*s),
            std::ops::Bound::Excluded(e) => u64::from(*e).saturating_add(1),
            std::ops::Bound::Unbounded => 0,
        };
        let mut end = {
            let ci = self.get_consensus_info().await?;
            let bound = |end: u64| std::cmp::min(end, ci.last_finalized_block_height.into());
            match range.end_bound() {
                std::ops::Bound::Included(e) => bound(u64::from(*e)),
                std::ops::Bound::Excluded(e) => {
                    bound(u64::from(*e).checked_sub(1).ok_or(QueryError::NotFound)?)
                }
                std::ops::Bound::Unbounded => u64::from(ci.last_finalized_block_height),
            }
        };
        if end < start {
            return Err(QueryError::NotFound);
        }
        let mut last_found = None;
        while start < end {
            let mid = start + (end - start) / 2;
            let ok = test(self.clone(), mid.into()).await?;
            if ok.is_some() {
                end = mid;
                last_found = ok;
            } else {
                start = mid + 1;
            }
        }
        last_found.ok_or(QueryError::NotFound)
    }

    #[deprecated(note = "Use [`find_at_lowest_height`](./struct.Client.html#method.\
                         find_at_lowest_height) instead since it avoids an extra call.")]
    pub async fn find_earliest_finalized<A, F: futures::Future<Output = QueryResult<Option<A>>>>(
        &mut self,
        range: impl std::ops::RangeBounds<AbsoluteBlockHeight>,
        test: impl Fn(Self, AbsoluteBlockHeight, BlockHash) -> F,
    ) -> QueryResult<A> {
        let mut start = match range.start_bound() {
            std::ops::Bound::Included(s) => u64::from(*s),
            std::ops::Bound::Excluded(e) => u64::from(*e).saturating_add(1),
            std::ops::Bound::Unbounded => 0,
        };
        let mut end = {
            let ci = self.get_consensus_info().await?;
            let bound = |end: u64| std::cmp::min(end, ci.last_finalized_block_height.into());
            match range.end_bound() {
                std::ops::Bound::Included(e) => bound(u64::from(*e)),
                std::ops::Bound::Excluded(e) => {
                    bound(u64::from(*e).checked_sub(1).ok_or(QueryError::NotFound)?)
                }
                std::ops::Bound::Unbounded => u64::from(ci.last_finalized_block_height),
            }
        };
        if end < start {
            return Err(QueryError::NotFound);
        }
        let mut last_found = None;
        while start < end {
            let mid = start + (end - start) / 2;
            let bh = self
                .get_blocks_at_height(&AbsoluteBlockHeight::from(mid).into())
                .await?[0]; // using [0] is safe since we are only looking at finalized blocks.
            let ok = test(self.clone(), mid.into(), bh).await?;
            if ok.is_some() {
                end = mid;
                last_found = ok;
            } else {
                start = mid + 1;
            }
        }
        last_found.ok_or(QueryError::NotFound)
    }

    /// Get all bakers in the reward period of a block.
    /// This endpoint is only supported for protocol version 4 and onwards.
    /// If the protocol does not support the endpoint then an
    /// [`IllegalArgument`](tonic::Code::InvalidArgument) is returned.
    pub async fn get_bakers_reward_period(
        &mut self,
        bi: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<
        QueryResponse<impl Stream<Item = Result<types::BakerRewardPeriodInfo, tonic::Status>>>,
    > {
        let response = self
            .client
            .get_bakers_reward_period(&bi.into_block_identifier())
            .await?;
        let block_hash = extract_metadata(&response)?;
        let stream = response.into_inner().map(|result| match result {
            Ok(baker) => baker.try_into(),
            Err(err) => Err(err),
        });
        Ok(QueryResponse {
            block_hash,
            response: stream,
        })
    }

    /// Retrieve the list of protocol level tokens that exist at the end of the
    /// given block.
    ///
    /// This endpoint is only relevant starting from Concordium Protocol Version
    /// 9 and onwards.
    pub async fn get_token_list(
        &mut self,
        bi: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<
        QueryResponse<impl Stream<Item = Result<protocol_level_tokens::TokenId, tonic::Status>>>,
    > {
        let response = self
            .client
            .get_token_list(&bi.into_block_identifier())
            .await?;
        let block_hash = extract_metadata(&response)?;
        let stream = response.into_inner().map(|result| match result {
            Ok(token_id) => protocol_level_tokens::TokenId::try_from(token_id),
            Err(err) => Err(err),
        });
        Ok(QueryResponse {
            block_hash,
            response: stream,
        })
    }

    /// Retrieve the information about the given protocol level token in the
    /// given block.
    ///
    /// This endpoint is only relevant starting from Concordium Protocol Version
    /// 9 and onwards.
    pub async fn get_token_info(
        &mut self,
        token_id: protocol_level_tokens::TokenId,
        bi: impl IntoBlockIdentifier,
    ) -> endpoints::QueryResult<QueryResponse<protocol_level_tokens::TokenInfo>> {
        let request = generated::TokenInfoRequest {
            block_hash: Some((&bi.into_block_identifier()).into()),
            token_id: Some(token_id.into()),
        };
        let response = self.client.get_token_info(request).await?;
        let block_hash = extract_metadata(&response)?;
        let response = protocol_level_tokens::TokenInfo::try_from(response.into_inner())?;
        Ok(QueryResponse {
            block_hash,
            response,
        })
    }
}

/// A stream of finalized blocks. This contains a background task that polls
/// for new finalized blocks indefinitely. The task can be stopped by dropping
/// the object.
pub struct FinalizedBlocksStream {
    handle: tokio::task::JoinHandle<endpoints::QueryResult<()>>,
    receiver: tokio::sync::mpsc::Receiver<FinalizedBlockInfo>,
}

// Make sure to abort the background task so that those resources are cleaned up
// before we drop the handle.
impl Drop for FinalizedBlocksStream {
    fn drop(&mut self) {
        self.handle.abort();
    }
}

impl FinalizedBlocksStream {
    /// Retrieves the next finalized block from the stream. This function will
    /// block until a finalized block becomes available. To avoid waiting
    /// indefinitely, consider using [`FinalizedBlocksStream::next_timeout`]
    /// instead. If the channel is closed, the next element is `None`.
    pub async fn next(&mut self) -> Option<FinalizedBlockInfo> {
        self.receiver.recv().await
    }

    /// Similar to [`FinalizedBlocksStream::next`], but with a maximum wait time
    /// defined by the specified duration between each finalized block.
    pub async fn next_timeout(
        &mut self,
        duration: std::time::Duration,
    ) -> Result<Option<FinalizedBlockInfo>, tokio::time::error::Elapsed> {
        tokio::time::timeout(duration, async move { self.next().await }).await
    }

    /// Get the next chunk of blocks. If the finalized block poller has been
    /// disconnected this will return `Err(blocks)` where `blocks` are the
    /// finalized blocks that were retrieved before closure. In that case
    /// all further calls will return `Err(Vec::new())`.
    ///
    /// In case of success up to `max(1, n)` elements will be returned. This
    /// function will block so it always returns at least one element, and
    /// will retrieve up to `n` elements without blocking further once at least
    /// one element has been acquired.
    pub async fn next_chunk(
        &mut self,
        n: usize,
    ) -> Result<Vec<FinalizedBlockInfo>, Vec<FinalizedBlockInfo>> {
        let mut out = Vec::with_capacity(n);
        let first = self.receiver.recv().await;
        match first {
            Some(v) => out.push(v),
            None => {
                return Err(out);
            }
        }
        for _ in 1..n {
            match self.receiver.try_recv() {
                Ok(v) => {
                    out.push(v);
                }
                Err(tokio::sync::mpsc::error::TryRecvError::Empty) => {
                    break;
                }
                Err(tokio::sync::mpsc::error::TryRecvError::Disconnected) => return Err(out),
            }
        }
        Ok(out)
    }

    /// Like [`next_chunk`](Self::next_chunk), but waits no more than the given
    /// duration for the block. The boolean signifies whether an error
    /// occurred (it is `true` if an error occurred) while getting blocks.
    /// If that is the case further calls will always yield an error.
    ///
    /// The first field of the response indicates if an error occurred. This
    /// will only happen if the stream of finalized blocks has unexpectedly
    /// dropped.
    pub async fn next_chunk_timeout(
        &mut self,
        n: usize,
        duration: std::time::Duration,
    ) -> Result<(bool, Vec<FinalizedBlockInfo>), tokio::time::error::Elapsed> {
        let mut out = Vec::with_capacity(n);
        let first = self.next_timeout(duration).await?;
        match first {
            Some(v) => out.push(v),
            None => return Ok((true, out)),
        }
        for _ in 1..n {
            match self.receiver.try_recv() {
                Ok(v) => {
                    out.push(v);
                }
                Err(tokio::sync::mpsc::error::TryRecvError::Empty) => {
                    break;
                }
                Err(tokio::sync::mpsc::error::TryRecvError::Disconnected) => {
                    return Ok((true, out))
                }
            }
        }
        Ok((false, out))
    }
}

fn extract_metadata<T>(response: &tonic::Response<T>) -> endpoints::RPCResult<BlockHash> {
    match response.metadata().get("blockhash") {
        Some(bytes) => {
            let bytes = bytes.as_bytes();
            if bytes.len() == 64 {
                let mut hash = [0u8; 32];
                if hex::decode_to_slice(bytes, &mut hash).is_err() {
                    tonic::Status::unknown("Response does correctly encode the block hash.");
                }
                Ok(hash.into())
            } else {
                Err(endpoints::RPCError::CallError(tonic::Status::unknown(
                    "Response does not include the expected metadata.",
                )))
            }
        }
        None => Err(endpoints::RPCError::CallError(tonic::Status::unknown(
            "Response does not include the expected metadata.",
        ))),
    }
}

/// A helper trait to make it simpler to require specific fields when parsing a
/// protobuf message by allowing us to use method calling syntax and
/// constructing responses that match the calling context, allowing us to use
/// the `?` syntax.
///
/// The main reason for needing this is that in proto3 all fields are optional,
/// so it is up to the application to validate inputs if they are required.
pub(crate) trait Require<E> {
    type A;
    fn require(self) -> Result<Self::A, E>;
}

impl<A> Require<tonic::Status> for Option<A> {
    type A = A;

    fn require(self) -> Result<Self::A, tonic::Status> {
        match self {
            Some(v) => Ok(v),
            None => Err(tonic::Status::invalid_argument("missing field in response")),
        }
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    #[test]
    /// Test the different cases when parsing BlockIdentifiers.
    fn block_ident_from_str() -> anyhow::Result<()> {
        let b1 = "best".parse::<BlockIdentifier>()?;
        assert_eq!(b1, BlockIdentifier::Best);

        let b2 = "lastFinal".parse::<BlockIdentifier>()?;
        assert_eq!(b2, BlockIdentifier::LastFinal);

        let b3 = "lastfinal".parse::<BlockIdentifier>()?;
        assert_eq!(b3, BlockIdentifier::LastFinal);

        let b4 = "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
            .parse::<BlockIdentifier>()?;
        assert_eq!(
            b4,
            BlockIdentifier::Given(
                "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff".parse()?
            )
        );

        let b5 = "@33".parse::<BlockIdentifier>()?;
        assert_eq!(b5, BlockIdentifier::AbsoluteHeight(33.into()));

        let b6 = "@33/3".parse::<BlockIdentifier>()?;
        assert_eq!(
            b6,
            BlockIdentifier::RelativeHeight(RelativeBlockHeight {
                genesis_index: 3.into(),
                height: 33.into(),
                restrict: false,
            })
        );

        let b7 = "@33/3!".parse::<BlockIdentifier>()?;
        assert_eq!(
            b7,
            BlockIdentifier::RelativeHeight(RelativeBlockHeight {
                genesis_index: 3.into(),
                height: 33.into(),
                restrict: true,
            })
        );

        Ok(())
    }
}