Enum sc_rpc_spec_v2::chain_head::event::FollowEvent

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pub enum FollowEvent<Hash> {
    Initialized(Initialized<Hash>),
    NewBlock(NewBlock<Hash>),
    BestBlockChanged(BestBlockChanged<Hash>),
    Finalized(Finalized<Hash>),
    OperationBodyDone(OperationBodyDone),
    OperationCallDone(OperationCallDone),
    OperationStorageItems(OperationStorageItems),
    OperationWaitingForContinue(OperationId),
    OperationStorageDone(OperationId),
    OperationInaccessible(OperationId),
    OperationError(OperationError),
    Stop,
}
Expand description

The event generated by the follow method.

The block events are generated in the following order:

  1. Initialized - generated only once to signal the latest finalized block
  2. NewBlock - a new block was added.
  3. BestBlockChanged - indicate that the best block is now the one from this event. The block was announced priorly with the NewBlock event.
  4. Finalized - State the finalized and pruned blocks.

The following events are related to operations:

  • OperationBodyDone: The response of the chianHead_body
  • OperationCallDone: The response of the chianHead_call
  • OperationStorageItems: Items produced by the chianHead_storage
  • OperationWaitingForContinue: Generated after OperationStorageItems and requires the user to call chainHead_continue
  • OperationStorageDone: The chianHead_storage method has produced all the results
  • OperationInaccessible: The server was unable to provide the result, retries might succeed in the future
  • OperationError: The server encountered an error, retries will not succeed

The stop event indicates that the JSON-RPC server was unable to provide a consistent list of the blocks at the head of the chain.

Variants§

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Initialized(Initialized<Hash>)

The latest finalized block.

This event is generated only once.

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NewBlock(NewBlock<Hash>)

A new non-finalized block was added.

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BestBlockChanged(BestBlockChanged<Hash>)

The best block of the chain.

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Finalized(Finalized<Hash>)

A list of finalized and pruned blocks.

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OperationBodyDone(OperationBodyDone)

The response of the chainHead_body method.

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OperationCallDone(OperationCallDone)

The response of the chainHead_call method.

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OperationStorageItems(OperationStorageItems)

Yield one or more items found in the storage.

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OperationWaitingForContinue(OperationId)

Ask the user to call chainHead_continue to produce more events regarding the operation id.

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OperationStorageDone(OperationId)

The responses of the chainHead_storage method have been produced.

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OperationInaccessible(OperationId)

The RPC server was unable to provide the response of the following operation id.

Repeating the same operation in the future might succeed.

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OperationError(OperationError)

The RPC server encountered an error while processing an operation id.

Repeating the same operation in the future will not succeed.

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Stop

The subscription is dropped and no further events will be generated.

Trait Implementations§

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impl<Hash: Clone> Clone for FollowEvent<Hash>

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fn clone(&self) -> FollowEvent<Hash>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<Hash: Debug> Debug for FollowEvent<Hash>

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

Formats the value using the given formatter. Read more
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impl<'de, Hash> Deserialize<'de> for FollowEvent<Hash>
where Hash: Deserialize<'de>,

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl<Hash: PartialEq> PartialEq for FollowEvent<Hash>

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fn eq(&self, other: &FollowEvent<Hash>) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<Hash> Serialize for FollowEvent<Hash>
where Hash: Serialize,

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl<Hash> StructuralPartialEq for FollowEvent<Hash>

Auto Trait Implementations§

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impl<Hash> Freeze for FollowEvent<Hash>
where Hash: Freeze,

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impl<Hash> RefUnwindSafe for FollowEvent<Hash>
where Hash: RefUnwindSafe,

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impl<Hash> Send for FollowEvent<Hash>
where Hash: Send,

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impl<Hash> Sync for FollowEvent<Hash>
where Hash: Sync,

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impl<Hash> Unpin for FollowEvent<Hash>
where Hash: Unpin,

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impl<Hash> UnwindSafe for FollowEvent<Hash>
where Hash: UnwindSafe,

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impl<T> Any for T
where T: 'static + ?Sized,

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Gets the TypeId of self. Read more
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Immutably borrows from an owned value. Read more
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🔬This is a nightly-only experimental API. (clone_to_uninit)
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