Struct Call 

pub struct Call {

    pub index: u32,
    pub parent_index: u32,
    pub depth: u32,
    pub call_type: i32,
    pub caller: Vec<u8>,
    pub address: Vec<u8>,
    pub address_delegates_to: Option<Vec<u8>>,
    pub value: Option<BigInt>,
    pub gas_limit: u64,
    pub gas_consumed: u64,
    pub return_data: Vec<u8>,
    pub input: Vec<u8>,
    pub executed_code: bool,
    pub suicide: bool,
    pub keccak_preimages: HashMap<String, String>,
    pub storage_changes: Vec<StorageChange>,
    pub balance_changes: Vec<BalanceChange>,
    pub nonce_changes: Vec<NonceChange>,
    pub logs: Vec<Log>,
    pub code_changes: Vec<CodeChange>,
    pub gas_changes: Vec<GasChange>,
    pub status_failed: bool,
    pub status_reverted: bool,
    pub failure_reason: String,
    pub state_reverted: bool,
    pub begin_ordinal: u64,
    pub end_ordinal: u64,
    pub account_creations: Vec<AccountCreation>,
}

Fields

index: u32

parent_index: u32

depth: u32

call_type: i32

caller: Vec<u8>

address: Vec<u8>

address_delegates_to: Option<Vec<u8>>

AddressDelegatesTo contains the address from which the actual code to execute will be loaded as defined per EIP-7702 rules. If the Call’s address value resolves to a code that delegates to another address, this field will be populated with the address that the call is delegated to. It will be empty in all other situations.

Assumes that a ‘SetCode’ transaction set address 0xA to delegates to address 0xB, then when a call is made to 0xA, the Call object would have:

• caller =
• address = 0xA
• address_delegates_to = 0xB

Again, it’s important to emphasize that this field relates to EIP-7702, if the call is a DELEGATE or CALLCODE type, this field will not be populated and will remain empty.

It will be populated only if EIP-7702 is active on the chain (Prague fork) and if the ‘address’ of the call was pointing to another address at time of execution.

value: Option<BigInt>

gas_limit: u64

gas_consumed: u64

return_data: Vec<u8>

input: Vec<u8>

Known Issues

• Version 3: When call is CREATE or CREATE2, this field is not populated. A couple of suggestions: 1. You can get the contract’s code in the code_changes field. 2. In the root CREATE call, you can directly use the TransactionTrace’s input field.

  Fixed in Version 4, see https://docs.substreams.dev/reference-material/chains-and-endpoints/ethereum-data-model for information about block versions.

executed_code: bool

Indicates whether the call executed code.

Known Issues

• Version 3: This may be incorrectly set to false for accounts with code handling native value transfers, as well as for certain precompiles with no input. The value is initially set based on call.type != CREATE && len(call.input) > 0 and later adjusted if the tracer detects an account without code.

  Fixed in Version 4, see https://docs.substreams.dev/reference-material/chains-and-endpoints/ethereum-data-model for information about block versions.

suicide: bool

keccak_preimages: HashMap<String, String>

hex representation of the hash -> preimage

storage_changes: Vec<StorageChange>

Known Issues

• Version 3: The data might be not be in order.

  Fixed in Version 4, see https://docs.substreams.dev/reference-material/chains-and-endpoints/ethereum-data-model for information about block versions.

balance_changes: Vec<BalanceChange>

nonce_changes: Vec<NonceChange>

logs: Vec<Log>

code_changes: Vec<CodeChange>

gas_changes: Vec<GasChange>

Known Issues

• Version 3: Some gas changes are not correctly tracked: 1. Gas refunded due to data returned to the chain (occurs at the end of a transaction, before buyback). 2. Initial gas allocation (0 -> GasLimit) at the start of a call. 3. Final gas deduction (LeftOver -> 0) at the end of a call (if applicable). Fixed in Version 4, see https://docs.substreams.dev/reference-material/chains-and-endpoints/ethereum-data-model for information about block versions.

status_failed: bool

In Ethereum, a call can be either:

• Successful, execution passes without any problem encountered
• Failed, execution failed, and remaining gas should be consumed
• Reverted, execution failed, but only gas consumed so far is billed, remaining gas is refunded

When a call is either failed or reverted, the status_failed field below is set to true. If the status is reverted, then both status_failed and status_reverted are going to be set to true.

status_reverted: bool

failure_reason: String

Populated when a call either failed or reverted, so when status_failed == true, see above for details about those flags.

state_reverted: bool

This field represents whether or not the state changes performed by this call were correctly recorded by the blockchain.

On Ethereum, a transaction can record state changes even if some of its inner nested calls failed. This is problematic however since a call will invalidate all its state changes as well as all state changes performed by its child call. This means that even if a call has a status of SUCCESS, the chain might have reverted all the state changes it performed.

   Trx 1
    Call #1 <Failed>
      Call #2 <Execution Success>
      Call #3 <Execution Success>
      |--- Failure here
    Call #4

In the transaction above, while Call #2 and Call #3 would have the status EXECUTED.

If you check all calls and check only state_reverted flag, you might be missing some balance changes and nonce changes. This is because when a full transaction fails in ethereum (e.g. calls.all(x.state_reverted == true)), there is still the transaction fee that are recorded to the chain.

Refer to [TransactionTrace#status] field for more details about the handling you must perform.

begin_ordinal: u64

Known Issues

• Version 3:

  1. The block’s global ordinal when the call started executing, refer to [Block] documentation for further information about ordinals and total ordering.
  2. The transaction root call begin_ordial is always 0 (also in the GENESIS block), which can cause issues when sorting by this field. To ensure proper execution order, set it as follows: trx.Calls\[0\].BeginOrdinal = trx.BeginOrdinal.

  Fixed in Version 4, see https://docs.substreams.dev/reference-material/chains-and-endpoints/ethereum-data-model for information about block versions.

end_ordinal: u64

Known Issues

• Version 3:

  1. The block’s global ordinal when the call finished executing, refer to [Block] documentation for further information about ordinals and total ordering.
  2. The root call of the GENESIS block is always 0. To fix it, you can set it as follows: rx.Calls\[0\].EndOrdinal = max.Uint64.

  Fixed in Version 4, see https://docs.substreams.dev/reference-material/chains-and-endpoints/ethereum-data-model for information about block versions.

account_creations: Vec<AccountCreation>

👎Deprecated

Known Issues

• Version 4: AccountCreations are NOT SUPPORTED anymore. DO NOT rely on them.

Implementations

impl Call

pub fn call_type(&self) -> CallType

Returns the enum value of call_type, or the default if the field is set to an invalid enum value.

pub fn set_call_type(&mut self, value: CallType)

Sets call_type to the provided enum value.

pub fn address_delegates_to(&self) -> &[u8]

Returns the value of address_delegates_to, or the default value if address_delegates_to is unset.

Trait Implementations

impl AsRef<Call> for Call

fn as_ref(&self) -> &Call

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<Call> for CallView<'_>

fn as_ref(&self) -> &Call

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for Call

fn clone(&self) -> Call

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Call

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for Call

fn default() -> Call

Returns the “default value” for a type.

impl Message for Call

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited( &self, buf: &mut impl BufMut, ) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq for Call

fn eq(&self, other: &Call) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Call