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Make wildcard storage change subscriptions RPC-unsafe (#11259)

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* When an RPC is rejected because it's RPC-unsafe say why in the error message

* Make wildcard storage change subscriptions RPC-unsafe

* Apply suggestions from code review

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

* Fix typo

* Fix tests

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>
This commit is contained in:
Koute
2022-04-27 14:35:52 +09:00
committed by GitHub
parent dcc8387dfa
commit 3890fd4cb2
6 changed files with 61 additions and 6 deletions
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substrate/client/rpc-api/src/state/mod.rs
+12 -1
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@@ -144,7 +144,18 @@ pub trait StateApi<Hash> {
id: SubscriptionId,
) -> RpcResult<bool>;
/// New storage subscription
/// Subscribe to the changes in the storage.
///
/// This RPC endpoint has two modes of operation:
/// 1) When `keys` is not `None` you'll only be informed about the changes
/// done to the specified keys; this is RPC-safe.
/// 2) When `keys` is `None` you'll be informed of *all* of the changes;
/// **this is RPC-unsafe**.
///
/// When subscribed to all of the changes this API will emit every storage
/// change for every block that is imported. These changes will only be sent
/// after a block is imported. If you require a consistent view across all changes
/// of every block, you need to take this into account.
#[pubsub(subscription = "state_storage", subscribe, name = "state_subscribeStorage")]
fn subscribe_storage(
&self,