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//! The canister interface for the IC management canister. See the [specification][spec] for full documentation of the interface.
//!
//! [spec]: https://internetcomputer.org/docs/current/references/ic-interface-spec#ic-management-canister
use crate::{
call::{AsyncCall, SyncCall},
Canister,
};
use candid::{CandidType, Deserialize, Nat};
use ic_agent::{export::Principal, Agent};
use std::{convert::AsRef, ops::Deref};
use strum_macros::{AsRefStr, Display, EnumString};
pub mod attributes;
pub mod builders;
#[doc(inline)]
pub use builders::{
CreateCanisterBuilder, InstallBuilder, InstallChunkedCodeBuilder, InstallCodeBuilder,
UpdateCanisterBuilder,
};
/// The IC management canister.
#[derive(Debug, Clone)]
pub struct ManagementCanister<'agent>(Canister<'agent>);
impl<'agent> Deref for ManagementCanister<'agent> {
type Target = Canister<'agent>;
fn deref(&self) -> &Self::Target {
&self.0
}
}
/// All the known methods of the management canister.
#[derive(AsRefStr, Debug, EnumString, Display)]
#[strum(serialize_all = "snake_case")]
pub enum MgmtMethod {
/// See [`ManagementCanister::create_canister`].
CreateCanister,
/// See [`ManagementCanister::install_code`].
InstallCode,
/// See [`ManagementCanister::start_canister`].
StartCanister,
/// See [`ManagementCanister::stop_canister`].
StopCanister,
/// See [`ManagementCanister::canister_status`].
CanisterStatus,
/// See [`ManagementCanister::delete_canister`].
DeleteCanister,
/// See [`ManagementCanister::deposit_cycles`].
DepositCycles,
/// See [`ManagementCanister::raw_rand`].
RawRand,
/// See [`ManagementCanister::provisional_create_canister_with_cycles`].
ProvisionalCreateCanisterWithCycles,
/// See [`ManagementCanister::provisional_top_up_canister`].
ProvisionalTopUpCanister,
/// See [`ManagementCanister::uninstall_code`].
UninstallCode,
/// See [`ManagementCanister::update_settings`].
UpdateSettings,
/// See [`ManagementCanister::upload_chunk`].
UploadChunk,
/// See [`ManagementCanister::clear_chunk_store`].
ClearChunkStore,
/// See [`ManagementCanister::stored_chunks`].
StoredChunks,
/// See [`ManagementCanister::install_chunked_code`].
InstallChunkedCode,
/// See [`ManagementCanister::fetch_canister_logs`].
FetchCanisterLogs,
/// There is no corresponding agent function as only canisters can call it.
EcdsaPublicKey,
/// There is no corresponding agent function as only canisters can call it.
SignWithEcdsa,
/// There is no corresponding agent function as only canisters can call it.
BitcoinGetBalance,
/// See [`ManagementCanister::bitcoin_get_balance_query`].
BitcoinGetBalanceQuery,
/// There is no corresponding agent function as only canisters can call it.
BitcoinGetUtxos,
/// See [`ManagementCanister::bitcoin_get_utxos_query`].
BitcoinGetUtxosQuery,
/// There is no corresponding agent function as only canisters can call it.
BitcoinSendTransaction,
/// There is no corresponding agent function as only canisters can call it.
BitcoinGetCurrentFeePercentiles,
/// There is no corresponding agent function as only canisters can call it.
NodeMetricsHistory,
}
impl<'agent> ManagementCanister<'agent> {
/// Create an instance of a `ManagementCanister` interface pointing to the specified Canister ID.
pub fn create(agent: &'agent Agent) -> Self {
Self(
Canister::builder()
.with_agent(agent)
.with_canister_id(Principal::management_canister())
.build()
.unwrap(),
)
}
/// Create a `ManagementCanister` interface from an existing canister object.
pub fn from_canister(canister: Canister<'agent>) -> Self {
Self(canister)
}
}
/// The complete canister status information of a canister. This includes
/// the CanisterStatus, a hash of the module installed on the canister (None if nothing installed),
/// the controller of the canister, the canister's memory size, and its balance in cycles.
#[derive(Clone, Debug, Deserialize, CandidType)]
pub struct StatusCallResult {
/// The status of the canister.
pub status: CanisterStatus,
/// The canister's settings.
pub settings: DefiniteCanisterSettings,
/// The SHA-256 hash of the canister's installed code, if any.
pub module_hash: Option<Vec<u8>>,
/// The total size, in bytes, of the memory the canister is using.
pub memory_size: Nat,
/// The canister's cycle balance.
pub cycles: Nat,
/// The canister's reserved cycles balance.
pub reserved_cycles: Nat,
/// The cycles burned by the canister in one day for its resource usage
/// (compute and memory allocation and memory usage).
pub idle_cycles_burned_per_day: Nat,
/// Additional information relating to query calls.
pub query_stats: QueryStats,
}
/// Statistics relating to query calls.
#[derive(Clone, Debug, Deserialize, CandidType)]
pub struct QueryStats {
/// The total number of query calls this canister has performed.
pub num_calls_total: Nat,
/// The total number of instructions this canister has executed during query calls.
pub num_instructions_total: Nat,
/// The total number of bytes in request payloads sent to this canister's query calls.
pub request_payload_bytes_total: Nat,
/// The total number of bytes in response payloads returned from this canister's query calls.
pub response_payload_bytes_total: Nat,
}
/// The concrete settings of a canister.
#[derive(Clone, Debug, Deserialize, CandidType)]
pub struct DefiniteCanisterSettings {
/// The set of canister controllers. Controllers can update the canister via the management canister.
pub controllers: Vec<Principal>,
/// The allocation percentage (between 0 and 100 inclusive) for *guaranteed* compute capacity.
pub compute_allocation: Nat,
/// The allocation, in bytes (up to 256 TiB) that the canister is allowed to use for storage.
pub memory_allocation: Nat,
/// The IC will freeze a canister protectively if it will likely run out of cycles before this amount of time, in seconds (up to `u64::MAX`), has passed.
pub freezing_threshold: Nat,
/// The upper limit of the canister's reserved cycles balance.
pub reserved_cycles_limit: Option<Nat>,
/// A soft limit on the Wasm memory usage of the canister in bytes (up to 256TiB).
pub wasm_memory_limit: Option<Nat>,
}
impl std::fmt::Display for StatusCallResult {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
std::fmt::Debug::fmt(self, f)
}
}
/// The status of a Canister, whether it's running, in the process of stopping, or
/// stopped.
#[derive(Clone, Debug, Deserialize, Eq, PartialEq, CandidType)]
pub enum CanisterStatus {
/// The canister is currently running.
#[serde(rename = "running")]
Running,
/// The canister is in the process of stopping.
#[serde(rename = "stopping")]
Stopping,
/// The canister is stopped.
#[serde(rename = "stopped")]
Stopped,
}
impl std::fmt::Display for CanisterStatus {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
std::fmt::Debug::fmt(self, f)
}
}
/// A log record of a canister.
#[derive(Default, Clone, CandidType, Deserialize, Debug, PartialEq, Eq)]
pub struct CanisterLogRecord {
/// The index of the log record.
pub idx: u64,
/// The timestamp of the log record.
pub timestamp_nanos: u64,
/// The content of the log record.
#[serde(with = "serde_bytes")]
pub content: Vec<u8>,
}
/// The result of a [`ManagementCanister::fetch_canister_logs`] call.
#[derive(Clone, Debug, Deserialize, Eq, PartialEq, CandidType)]
pub struct FetchCanisterLogsResponse {
/// The logs of the canister.
pub canister_log_records: Vec<CanisterLogRecord>,
}
/// Chunk hash.
#[derive(CandidType, Deserialize, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Clone)]
pub struct ChunkHash {
/// The hash of an uploaded chunk
#[serde(with = "serde_bytes")]
pub hash: Vec<u8>,
}
/// Return type of [ManagementCanister::stored_chunks].
pub type StoreChunksResult = Vec<ChunkHash>;
/// Return type of [ManagementCanister::upload_chunk].
pub type UploadChunkResult = ChunkHash;
/// The Bitcoin network that a Bitcoin transaction is placed on.
#[derive(Clone, Copy, Debug, CandidType, Deserialize, PartialEq, Eq)]
pub enum BitcoinNetwork {
/// The BTC network.
#[serde(rename = "mainnet")]
Mainnet,
/// The TESTBTC network.
#[serde(rename = "testnet")]
Testnet,
/// The REGTEST network.
///
/// This is only available when developing with local replica.
#[serde(rename = "regtest")]
Regtest,
}
/// Defines how to filter results from [`bitcoin_get_utxos_query`](ManagementCanister::bitcoin_get_utxos_query).
#[derive(Debug, Clone, CandidType, Deserialize)]
pub enum UtxosFilter {
/// Filter by the minimum number of UTXO confirmations. Most applications should set this to 6.
#[serde(rename = "min_confirmations")]
MinConfirmations(u32),
/// When paginating results, use this page. Provided by [`GetUtxosResponse.next_page`](GetUtxosResponse).
#[serde(rename = "page")]
Page(#[serde(with = "serde_bytes")] Vec<u8>),
}
/// Unique output descriptor of a Bitcoin transaction.
#[derive(Debug, Clone, CandidType, Deserialize)]
pub struct UtxoOutpoint {
/// The ID of the transaction. Not necessarily unique on its own.
pub txid: Vec<u8>,
/// The index of the outpoint within the transaction.
pub vout: u32,
}
/// A Bitcoin [`UTXO`](https://en.wikipedia.org/wiki/Unspent_transaction_output), produced by a transaction.
#[derive(Debug, Clone, CandidType, Deserialize)]
pub struct Utxo {
/// The transaction outpoint that produced this UTXO.
pub outpoint: UtxoOutpoint,
/// The BTC quantity, in satoshis.
pub value: u64,
/// The block index this transaction was placed at.
pub height: u32,
}
/// Response type for the `bitcoin_get_utxos_query` function.
#[derive(Debug, Clone, CandidType, Deserialize)]
pub struct GetUtxosResponse {
/// A list of UTXOs available for the specified address.
pub utxos: Vec<Utxo>,
/// The hash of the tip.
pub tip_block_hash: Vec<u8>,
/// The block index of the tip of the chain known to the IC.
pub tip_height: u32,
/// If `Some`, then `utxos` does not contain the entire results of the query.
/// Call `bitcoin_get_utxos_query` again using `UtxosFilter::Page` for the next page of results.
pub next_page: Option<Vec<u8>>,
}
impl<'agent> ManagementCanister<'agent> {
/// Get the status of a canister.
pub fn canister_status(
&self,
canister_id: &Principal,
) -> impl 'agent + AsyncCall<(StatusCallResult,)> {
#[derive(CandidType)]
struct In {
canister_id: Principal,
}
self.update(MgmtMethod::CanisterStatus.as_ref())
.with_arg(In {
canister_id: *canister_id,
})
.with_effective_canister_id(canister_id.to_owned())
.build()
.map(|result: (StatusCallResult,)| (result.0,))
}
/// Create a canister.
pub fn create_canister<'canister>(&'canister self) -> CreateCanisterBuilder<'agent, 'canister> {
CreateCanisterBuilder::builder(self)
}
/// This method deposits the cycles included in this call into the specified canister.
/// Only the controller of the canister can deposit cycles.
pub fn deposit_cycles(&self, canister_id: &Principal) -> impl 'agent + AsyncCall<()> {
#[derive(CandidType)]
struct Argument {
canister_id: Principal,
}
self.update(MgmtMethod::DepositCycles.as_ref())
.with_arg(Argument {
canister_id: *canister_id,
})
.with_effective_canister_id(canister_id.to_owned())
.build()
}
/// Deletes a canister.
pub fn delete_canister(&self, canister_id: &Principal) -> impl 'agent + AsyncCall<()> {
#[derive(CandidType)]
struct Argument {
canister_id: Principal,
}
self.update(MgmtMethod::DeleteCanister.as_ref())
.with_arg(Argument {
canister_id: *canister_id,
})
.with_effective_canister_id(canister_id.to_owned())
.build()
}
/// Until developers can convert real ICP tokens to a top up an existing canister,
/// the system provides the provisional_top_up_canister method.
/// It adds amount cycles to the balance of canister identified by amount
/// (implicitly capping it at MAX_CANISTER_BALANCE).
pub fn provisional_top_up_canister(
&self,
canister_id: &Principal,
amount: u64,
) -> impl 'agent + AsyncCall<()> {
#[derive(CandidType)]
struct Argument {
canister_id: Principal,
amount: u64,
}
self.update(MgmtMethod::ProvisionalTopUpCanister.as_ref())
.with_arg(Argument {
canister_id: *canister_id,
amount,
})
.with_effective_canister_id(canister_id.to_owned())
.build()
}
/// This method takes no input and returns 32 pseudo-random bytes to the caller.
/// The return value is unknown to any part of the IC at time of the submission of this call.
/// A new return value is generated for each call to this method.
pub fn raw_rand(&self) -> impl 'agent + AsyncCall<(Vec<u8>,)> {
self.update(MgmtMethod::RawRand.as_ref())
.build()
.map(|result: (Vec<u8>,)| (result.0,))
}
/// Starts a canister.
pub fn start_canister(&self, canister_id: &Principal) -> impl 'agent + AsyncCall<()> {
#[derive(CandidType)]
struct Argument {
canister_id: Principal,
}
self.update(MgmtMethod::StartCanister.as_ref())
.with_arg(Argument {
canister_id: *canister_id,
})
.with_effective_canister_id(canister_id.to_owned())
.build()
}
/// Stop a canister.
pub fn stop_canister(&self, canister_id: &Principal) -> impl 'agent + AsyncCall<()> {
#[derive(CandidType)]
struct Argument {
canister_id: Principal,
}
self.update(MgmtMethod::StopCanister.as_ref())
.with_arg(Argument {
canister_id: *canister_id,
})
.with_effective_canister_id(canister_id.to_owned())
.build()
}
/// This method removes a canister’s code and state, making the canister empty again.
/// Only the controller of the canister can uninstall code.
/// Uninstalling a canister’s code will reject all calls that the canister has not yet responded to,
/// and drop the canister’s code and state.
/// Outstanding responses to the canister will not be processed, even if they arrive after code has been installed again.
/// The canister is now empty. In particular, any incoming or queued calls will be rejected.
//// A canister after uninstalling retains its cycles balance, controller, status, and allocations.
pub fn uninstall_code(&self, canister_id: &Principal) -> impl 'agent + AsyncCall<()> {
#[derive(CandidType)]
struct Argument {
canister_id: Principal,
}
self.update(MgmtMethod::UninstallCode.as_ref())
.with_arg(Argument {
canister_id: *canister_id,
})
.with_effective_canister_id(canister_id.to_owned())
.build()
}
/// Install a canister, with all the arguments necessary for creating the canister.
pub fn install_code<'canister>(
&'canister self,
canister_id: &Principal,
wasm: &'canister [u8],
) -> InstallCodeBuilder<'agent, 'canister> {
InstallCodeBuilder::builder(self, canister_id, wasm)
}
/// Update one or more of a canisters settings (i.e its controller, compute allocation, or memory allocation.)
pub fn update_settings<'canister>(
&'canister self,
canister_id: &Principal,
) -> UpdateCanisterBuilder<'agent, 'canister> {
UpdateCanisterBuilder::builder(self, canister_id)
}
/// Upload a chunk of a WASM module to a canister's chunked WASM storage.
pub fn upload_chunk(
&self,
canister_id: &Principal,
chunk: &[u8],
) -> impl 'agent + AsyncCall<(UploadChunkResult,)> {
#[derive(CandidType, Deserialize)]
struct Argument<'a> {
canister_id: Principal,
#[serde(with = "serde_bytes")]
chunk: &'a [u8],
}
self.update(MgmtMethod::UploadChunk.as_ref())
.with_arg(Argument {
canister_id: *canister_id,
chunk,
})
.with_effective_canister_id(*canister_id)
.build()
}
/// Clear a canister's chunked WASM storage.
pub fn clear_chunk_store(&self, canister_id: &Principal) -> impl 'agent + AsyncCall<()> {
#[derive(CandidType)]
struct Argument<'a> {
canister_id: &'a Principal,
}
self.update(MgmtMethod::ClearChunkStore.as_ref())
.with_arg(Argument { canister_id })
.with_effective_canister_id(*canister_id)
.build()
}
/// Get a list of the hashes of a canister's stored WASM chunks
pub fn stored_chunks(
&self,
canister_id: &Principal,
) -> impl 'agent + AsyncCall<(StoreChunksResult,)> {
#[derive(CandidType)]
struct Argument<'a> {
canister_id: &'a Principal,
}
self.update(MgmtMethod::StoredChunks.as_ref())
.with_arg(Argument { canister_id })
.with_effective_canister_id(*canister_id)
.build()
}
/// Install a canister module previously uploaded in chunks via [`upload_chunk`](Self::upload_chunk).
pub fn install_chunked_code<'canister>(
&'canister self,
canister_id: &Principal,
wasm_module_hash: &[u8],
) -> InstallChunkedCodeBuilder<'agent, 'canister> {
InstallChunkedCodeBuilder::builder(self, *canister_id, wasm_module_hash)
}
/// Install a canister module, automatically selecting one-shot installation or chunked installation depending on module size.
///
/// # Warnings
///
/// This will clear chunked code storage if chunked installation is used. Do not use with canisters that you are manually uploading chunked code to.
pub fn install<'canister: 'builder, 'builder>(
&'canister self,
canister_id: &Principal,
wasm: &'builder [u8],
) -> InstallBuilder<'agent, 'canister, 'builder> {
InstallBuilder::builder(self, canister_id, wasm)
}
/// Fetch the logs of a canister.
pub fn fetch_canister_logs(
&self,
canister_id: &Principal,
) -> impl 'agent + SyncCall<(FetchCanisterLogsResponse,)> {
#[derive(CandidType)]
struct In {
canister_id: Principal,
}
// `fetch_canister_logs` is only supported in non-replicated mode.
self.query(MgmtMethod::FetchCanisterLogs.as_ref())
.with_arg(In {
canister_id: *canister_id,
})
.with_effective_canister_id(*canister_id)
.build()
}
/// Gets the BTC balance (in satoshis) of a particular Bitcoin address, filtering by number of confirmations.
/// Most applications should require 6 confirmations.
pub fn bitcoin_get_balance_query(
&self,
address: &str,
network: BitcoinNetwork,
min_confirmations: Option<u32>,
) -> impl 'agent + SyncCall<(u64,)> {
#[derive(CandidType)]
struct In<'a> {
address: &'a str,
network: BitcoinNetwork,
min_confirmations: Option<u32>,
}
self.query(MgmtMethod::BitcoinGetBalanceQuery.as_ref())
.with_arg(In {
address,
network,
min_confirmations,
})
.with_effective_canister_id(Principal::management_canister())
.build()
}
/// Fetch the list of [UTXOs](https://en.wikipedia.org/wiki/Unspent_transaction_output) for a Bitcoin address,
/// filtering by number of confirmations. Most applications should require 6 confirmations.
///
/// This method is paginated. If not all the results can be returned, then `next_page` will be set to `Some`,
/// and its value can be passed to this method to get the next page.
pub fn bitcoin_get_utxos_query(
&self,
address: &str,
network: BitcoinNetwork,
filter: Option<UtxosFilter>,
) -> impl 'agent + SyncCall<(GetUtxosResponse,)> {
#[derive(CandidType)]
struct In<'a> {
address: &'a str,
network: BitcoinNetwork,
filter: Option<UtxosFilter>,
}
self.query(MgmtMethod::BitcoinGetUtxosQuery.as_ref())
.with_arg(In {
address,
network,
filter,
})
.with_effective_canister_id(Principal::management_canister())
.build()
}
}