mirror of
https://github.com/wavetermdev/waveterm
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4956c92c55
`WriteWaveHomeConfigFile()` previously used direct `os.WriteFile`, which
can expose truncation/partial-write states to the JSON file watcher.
This change switches config persistence to temp-file + rename semantics
and serializes writes through a single process-wide lock for config file
writes.
- **Atomic file write helper**
- Added `AtomicWriteFile()` in `pkg/util/fileutil/fileutil.go`.
- Writes to `<filename>.tmp` in the same directory, then renames to the
target path.
- Performs temp-file cleanup on error paths.
- Introduced a shared suffix constant (`TempFileSuffix`) used by
implementation/tests.
- **Config write path update**
- Updated `WriteWaveHomeConfigFile()` in `pkg/wconfig/settingsconfig.go`
to:
- Use a package-level mutex (`configWriteLock`) so only one config write
runs at a time (across all config files).
- Call `fileutil.AtomicWriteFile(...)` instead of direct
`os.WriteFile(...)`.
- **Focused coverage for atomic behavior**
- Added `pkg/util/fileutil/fileutil_test.go` with tests for:
- Successful atomic write (target file contains expected payload and no
leftover `.tmp` file).
- Rename-failure path cleanup (temp file is removed).
```go
func WriteWaveHomeConfigFile(fileName string, m waveobj.MetaMapType) error {
configWriteLock.Lock()
defer configWriteLock.Unlock()
fullFileName := filepath.Join(wavebase.GetWaveConfigDir(), fileName)
barr, err := jsonMarshalConfigInOrder(m)
if err != nil {
return err
}
return fileutil.AtomicWriteFile(fullFileName, barr, 0644)
}
```
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|---|---|---|
| .. | ||
| daystr | ||
| dbutil | ||
| ds | ||
| envutil | ||
| fileutil | ||
| iochan | ||
| iterfn | ||
| logutil | ||
| logview | ||
| migrateutil | ||
| packetparser | ||
| pamparse | ||
| readutil | ||
| shellutil | ||
| sigutil | ||
| syncbuf | ||
| unixutil | ||
| utilfn | ||