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Optimize RPC pubsub for multiple clients with the same subscription (#18943)

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* reimplement rpc pubsub with a broadcast queue

* update tests for new pubsub implementation

* fix: fix review suggestions

* chore(rpc): add additional pubsub metrics

* integrate max subscriptions check into SubscriptionTracker to reduce locking

* separate subscription control from tracker

* limit memory usage of items in pubsub broadcast queue, improve error handling

* add more pubsub metrics

* add final count metrics to pubsub

* add metric for total number of subscriptions

* fix small review suggestions

* remove by_params from SubscriptionTracker and add node_progress_watchers map instead

* add subscription tracker tests

* add metrics for number of pubsub notifications as a counter

* ignore clippy lint in TokenCounter

* fix underflow in token counter

* reduce queue capacity in pubsub tests

* fix(rpc): fix test timeouts

* fix race in account subscription test

* Add RpcSubscriptions::new_for_tests

Co-authored-by: Pavel Strakhov <p.strakhov@iconic.vc>
Co-authored-by: Nikita Podoliako <n.podoliako@zubr.io>
Co-authored-by: Tyera Eulberg <tyera@solana.com>
This commit is contained in:
Pavel Strakhov
2021-09-17 22:40:14 +03:00
committed by GitHub
parent fc2bf2d3b6
commit 65227f44dc
22 changed files with 2555 additions and 2073 deletions
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rpc/src/lib.rs
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@@ -9,6 +9,7 @@ pub mod rpc_health;
pub mod rpc_pubsub;
pub mod rpc_pubsub_service;
pub mod rpc_service;
pub mod rpc_subscription_tracker;
pub mod rpc_subscriptions;
pub mod transaction_status_service;