Add concurrency to mdformatter
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Signed-off-by: Saswata Mukherjee <[email protected]>
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bwplotka
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Jul 27, 2021
| @@ -240,57 +241,73 @@ func IsFormatted(ctx context.Context, logger log.Logger, files []string, opts .. | |||
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| func format(ctx context.Context, logger log.Logger, files []string, diffs *Diffs, spin *yacspin.Spinner, opts ...Option) error { | |||
| f := New(ctx, opts...) | |||
| b := bytes.Buffer{} | |||
| // TODO(bwplotka): Add concurrency (collector will need to redone). | |||
| errorChannel := make(chan error) | |||
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Suggested change
| errorChannel := make(chan error) | |
| errorCh := make(chan error) |
| spin.Message(fn + "...") | ||
| } | ||
| errs.Add(func() error { | ||
| go func(fn string) { |
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Let's use https://pkg.go.dev/golang.org/x/sync/errgroup maybe, so semantics are easier.
| return | ||
| } | ||
| v.destFutures[k] = &futureResult{cases: 1, resultFn: func() error { return nil }} | ||
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I think there is a race during replacement operation.
| @@ -34,7 +34,11 @@ func (v GitHubValidator) IsValid(k futureKey, r *validator) (bool, error) { | |||
| // RoundTripValidator.IsValid returns true if url is checked by colly. | |||
| func (v RoundTripValidator) IsValid(k futureKey, r *validator) (bool, error) { | |||
| // Result will be in future. | |||
| r.destFutures[k].resultFn = func() error { return r.remoteLinks[k.dest] } | |||
| prevResult, _ := r.destFutures.LoadAndDelete(k) | |||
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Lot's of races when we delete, unfortunately.. we need to make this operation locked potentially with Mutex.
But it has to be the full operation Locked:
- Checking if there is entry in map
- If no, create new future, and schedule colly
- If yes, grab reference to future
We might need to check IsValid interface, if this actually allows us to do this 🤔
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Still comments not addressed, I believe? |
1 task
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Any progress? |
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This PR parallelizes the file processing loop in
mdformatterfor faster formatting and link checking usingWaitGroupby spawning a goroutine for each file. (This also changes CLI spinner behavior as filenames cannot be shown due to multiple files being processed at once)Some caveats,
v.c.Wait()(flaky, maybe due to internal colly WaitGroup)