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Dmitry Markin
8d033b6dfb
* Convert `NetworkWorker::poll()` into async `next_action()` * Use `NetworkWorker::next_action` instead of `poll` in `sc-network-test` * Revert "Use `NetworkWorker::next_action` instead of `poll` in `sc-network-test`" This reverts commit 4b5d851ec864f78f9d083a18a618fbe117c896d2. * Fix `sc-network-test` to poll `NetworkWorker::next_action` * Fix `sc_network::service` tests to poll `NetworkWorker::next_action` * Fix docs * kick CI * Factor out `next_worker_message()` & `next_swarm_event()` * Error handling: replace `futures::pending!()` with `expect()` * Simplify stream polling in `select!` * Replace `NetworkWorker::next_action()` with `run()` * Apply suggestions from code review Co-authored-by: Bastian Köcher <git@kchr.de> * minor: comment * Apply suggestions from code review Co-authored-by: Bastian Köcher <git@kchr.de> * Print debug log when network future is shut down * Evaluate `NetworkWorker::run()` future once before the loop * Fix client code to match new `NetworkService` interfaces * Make clippy happy * Apply suggestions from code review Co-authored-by: Bastian Köcher <git@kchr.de> * Apply suggestions from code review Co-authored-by: Bastian Köcher <git@kchr.de> * Revert "Apply suggestions from code review" This reverts commit 9fa646d0ed613e5f8623d3d37d1d59ec0a535850. * Make `NetworkWorker::run()` consume `self` * Terminate system RPC future if RPC rx stream has terminated. * Rewrite with let-else * Fix comments * Get `best_seen_block` and call `on_block_finalized` via `ChainSync` instead of `NetworkService` * rustfmt * make clippy happy * Tests: schedule wake if `next_action()` returned true * minor: comment * minor: fix `NetworkWorker` rustdoc * minor: amend the rustdoc * Fix bug that caused `on_demand_beefy_justification_sync` test to hang * rustfmt * Apply review suggestions --------- Co-authored-by: Bastian Köcher <git@kchr.de>
Substrate offchain workers.
The offchain workers is a special function of the runtime that gets executed after block is imported. During execution it's able to asynchronously submit extrinsics that will either be propagated to other nodes or added to the next block produced by the node as unsigned transactions.
Offchain workers can be used for computation-heavy tasks that are not feasible for execution during regular block processing. It can either be tasks that no consensus is required for, or some form of consensus over the data can be built on-chain for instance via:
- Challenge period for incorrect computations
- Majority voting for results
- etc
License: GPL-3.0-or-later WITH Classpath-exception-2.0