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Added subscribe_all_heads RPC function (#4979)

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* Added subscribe_all_heads RPC function

* Update client/rpc/src/chain/tests.rs

Fixed style ( spacing )

Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

Co-authored-by: Tomasz Drwięga <tomusdrw@users.noreply.github.com>
This commit is contained in:
Jakub Pánik
2020-03-04 14:19:38 +01:00
committed by GitHub
parent f5a797982f
commit e366b5bd2c
3 changed files with 81 additions and 6 deletions
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substrate/client/rpc/src/chain/mod.rs
+38 -4
View File
@@ -94,7 +94,33 @@ trait ChainBackend<B, E, Block: BlockT, RA>: Send + Sync + 'static
Ok(self.client().chain_info().finalized_hash)
}
/// New head subscription
/// All new head subscription
fn subscribe_all_heads(
&self,
_metadata: crate::metadata::Metadata,
subscriber: Subscriber<Block::Header>,
) {
subscribe_headers(
self.client(),
self.subscriptions(),
subscriber,
|| self.client().chain_info().best_hash,
|| self.client().import_notification_stream()
.map(|notification| Ok::<_, ()>(notification.header))
.compat(),
)
}
/// Unsubscribe from all head subscription.
fn unsubscribe_all_heads(
&self,
_metadata: Option<crate::metadata::Metadata>,
id: SubscriptionId,
) -> RpcResult<bool> {
Ok(self.subscriptions().cancel(id))
}
/// New best head subscription
fn subscribe_new_heads(
&self,
_metadata: crate::metadata::Metadata,
@@ -112,7 +138,7 @@ trait ChainBackend<B, E, Block: BlockT, RA>: Send + Sync + 'static
)
}
/// Unsubscribe from new head subscription.
/// Unsubscribe from new best head subscription.
fn unsubscribe_new_heads(
&self,
_metadata: Option<crate::metadata::Metadata>,
@@ -121,7 +147,7 @@ trait ChainBackend<B, E, Block: BlockT, RA>: Send + Sync + 'static
Ok(self.subscriptions().cancel(id))
}
/// New head subscription
/// Finalized head subscription
fn subscribe_finalized_heads(
&self,
_metadata: crate::metadata::Metadata,
@@ -138,7 +164,7 @@ trait ChainBackend<B, E, Block: BlockT, RA>: Send + Sync + 'static
)
}
/// Unsubscribe from new head subscription.
/// Unsubscribe from finalized head subscription.
fn unsubscribe_finalized_heads(
&self,
_metadata: Option<crate::metadata::Metadata>,
@@ -229,6 +255,14 @@ impl<B, E, Block, RA> ChainApi<NumberFor<Block>, Block::Hash, Block::Header, Sig
self.backend.finalized_head()
}
fn subscribe_all_heads(&self, metadata: Self::Metadata, subscriber: Subscriber<Block::Header>) {
self.backend.subscribe_all_heads(metadata, subscriber)
}
fn unsubscribe_all_heads(&self, metadata: Option<Self::Metadata>, id: SubscriptionId) -> RpcResult<bool> {
self.backend.unsubscribe_all_heads(metadata, id)
}
fn subscribe_new_heads(&self, metadata: Self::Metadata, subscriber: Subscriber<Block::Header>) {
self.backend.subscribe_new_heads(metadata, subscriber)
}