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storing pid and aquiring fs lock to limit concurrent gr processes (#28)
Co-authored-by: Dawid Ciepiela <[email protected]>
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| Original file line number | Diff line number | Diff line change |
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@@ -6,6 +6,7 @@ Cristian | |
| Debugf | ||
| exluded | ||
| fatih | ||
| fslock | ||
| Fullname | ||
| Henzel | ||
| Hostpath | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,41 @@ | ||
| package configfile | ||
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| import ( | ||
| "bytes" | ||
| "encoding/binary" | ||
| "os" | ||
| "path/filepath" | ||
| "time" | ||
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| config "github.com/cli/go-gh/v2/pkg/config" | ||
| fslock "github.com/juju/fslock" | ||
| util "github.com/sarumaj/gh-gr/pkg/util" | ||
| ) | ||
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| const pidFile = "gr.pid" | ||
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| var pidFilePath = filepath.Join(config.ConfigDir(), pidFile) | ||
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| type ProcessLock struct{ lock *fslock.Lock } | ||
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| func (p ProcessLock) Lock(timeout time.Duration) { | ||
| if timeout > 0 { | ||
| util.FatalIfError(p.lock.LockWithTimeout(timeout)) | ||
| return | ||
| } | ||
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| util.FatalIfError(p.lock.Lock()) | ||
| } | ||
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| func (p ProcessLock) Unlock() { | ||
| util.FatalIfError(p.lock.Unlock()) | ||
| _ = os.Remove(pidFilePath) | ||
| } | ||
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| func NewProcessLock() *ProcessLock { | ||
| buffer := bytes.NewBuffer(nil) | ||
| util.FatalIfError(binary.Write(buffer, binary.LittleEndian, uint32(os.Getpid()))) | ||
| util.FatalIfError(os.WriteFile(pidFilePath, buffer.Bytes(), os.ModePerm)) | ||
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| return &ProcessLock{fslock.New(pidFilePath)} | ||
| } |
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