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Merge updater into the config package (#426)
* Merge updater into the config package * Rename config.NewUpdaterOptionsWithFlags() for clarity; update deps
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| package config | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "flag" | ||
| "log" | ||
| "os" | ||
| "time" | ||
|
|
||
| "github.com/Arriven/db1000n/src/utils" | ||
| ) | ||
|
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| // NewUpdaterOptionsWithFlags returns updater options initialized with command line flags. | ||
| func NewUpdaterOptionsWithFlags() (updaterMode *bool, destinationPath *string) { | ||
| return flag.Bool("updater-mode", utils.GetEnvBoolDefault("UPDATER_MODE", false), "Only run config updater"), | ||
| flag.String("updater-destination-config", utils.GetEnvStringDefault("UPDATER_DESTINATION_CONFIG", "config/config.json"), | ||
| "Destination config file to write (only applies if updater-mode is enabled") | ||
| } | ||
|
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| func UpdateLocal(destinationPath string, configPaths []string, backupConfig []byte) { | ||
| lastKnownConfig := &RawConfig{Body: backupConfig} | ||
|
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| for { | ||
| if rawConfig := FetchRawConfig(configPaths, lastKnownConfig); !bytes.Equal(lastKnownConfig.Body, rawConfig.Body) { | ||
| if err := writeConfig(rawConfig.Body, destinationPath); err != nil { | ||
| log.Printf("Error writing config: %v", err) | ||
| } | ||
|
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| return | ||
| } | ||
|
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| time.Sleep(1 * time.Minute) | ||
| } | ||
| } | ||
|
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| func writeConfig(body []byte, destinationPath string) error { | ||
| file, err := os.Create(destinationPath) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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||
| defer file.Close() | ||
|
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| size, err := file.Write(body) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| log.Printf("Saved %s with size %d", destinationPath, size) | ||
|
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| return nil | ||
| } |
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