Dmitriy Ryajov 1cac3e2a11
Fix/rework async exceptions (#1130)
* cleanup imports and logs

* add BlockHandle type

* revert deps

* refactor: async error handling and future tracking improvements

- Update async procedures to use explicit raises annotation
- Modify TrackedFutures to handle futures with no raised exceptions
- Replace `asyncSpawn` with explicit future tracking
- Update test suites to use `unittest2`
- Standardize error handling across network and async components
- Remove deprecated error handling patterns

This commit introduces a more robust approach to async error handling and future management, improving type safety and reducing potential runtime errors.

* bump nim-serde

* remove asyncSpawn

* rework background downloads and prefetch

* imporove logging

* refactor: enhance async procedures with error handling and raise annotations

* misc cleanup

* misc

* refactor: implement allFinishedFailed to aggregate future results with success and failure tracking

* refactor: update error handling in reader procedures to raise ChunkerError and CancelledError

* refactor: improve error handling in wantListHandler and accountHandler procedures

* refactor: simplify LPStreamReadError creation by consolidating parameters

* refactor: enhance error handling in AsyncStreamWrapper to catch unexpected errors

* refactor: enhance error handling in advertiser and discovery loops to improve resilience

* misc

* refactor: improve code structure and readability

* remove cancellation from addSlotToQueue

* refactor: add assertion for unexpected errors in local store checks

* refactor: prevent tracking of finished futures and improve test assertions

* refactor: improve error handling in local store checks

* remove usage of msgDetail

* feat: add initial implementation of discovery engine and related components

* refactor: improve task scheduling logic by removing unnecessary break statement

* break after scheduling a task

* make taskHandler cancelable

* refactor: update async handlers to raise CancelledError

* refactor(advertiser): streamline error handling and improve task flow in advertise loops

* fix: correct spelling of "divisible" in error messages and comments

* refactor(discovery): simplify discovery task loop and improve error handling

* refactor(engine): filter peers before processing in cancelBlocks procedure
2025-03-13 07:33:15 -07:00

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1.6 KiB
Nim

## Nim-Codex
## Copyright (c) 2023 Status Research & Development GmbH
## Licensed under either of
## * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
## * MIT license ([LICENSE-MIT](LICENSE-MIT))
## at your option.
## This file may not be copied, modified, or distributed except according to
## those terms.
## Timer
## Used to execute a callback in a loop
import pkg/upraises
push:
{.upraises: [].}
import pkg/chronos
import ../logutils
type
TimerCallback* = proc(): Future[void] {.gcsafe, upraises: [].}
Timer* = ref object of RootObj
callback: TimerCallback
interval: Duration
name: string
loopFuture: Future[void]
proc new*(T: type Timer, timerName = "Unnamed Timer"): Timer =
## Create a new Timer intance with the given name
Timer(name: timerName)
proc timerLoop(timer: Timer) {.async: (raises: []).} =
try:
while true:
await timer.callback()
await sleepAsync(timer.interval)
except CancelledError:
discard # do not propagate as timerLoop is asyncSpawned
except CatchableError as exc:
error "Timer caught unhandled exception: ", name = timer.name, msg = exc.msg
method start*(
timer: Timer, callback: TimerCallback, interval: Duration
) {.gcsafe, base.} =
if timer.loopFuture != nil:
return
trace "Timer starting: ", name = timer.name
timer.callback = callback
timer.interval = interval
timer.loopFuture = timerLoop(timer)
method stop*(timer: Timer) {.async, base.} =
if timer.loopFuture != nil and not timer.loopFuture.finished:
trace "Timer stopping: ", name = timer.name
await timer.loopFuture.cancelAndWait()
timer.loopFuture = nil