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Merge pull request #112 from ugol/issue/111
Added GCS Producer Fix #111
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,3 @@ | ||
| { | ||
| "bucket_name": "your-bucket-name" | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,74 @@ | ||
| package gcs | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/json" | ||
| "io/ioutil" | ||
| "log" | ||
| "fmt" | ||
|
|
||
| "cloud.google.com/go/storage" | ||
| "github.com/google/uuid" | ||
| ) | ||
|
|
||
| type Config struct { | ||
| Bucket string `json:"bucket_name"` | ||
| } | ||
|
|
||
| type GCSProducer struct { | ||
| client storage.Client | ||
| bucket string | ||
| } | ||
|
|
||
| func (p *GCSProducer) Initialize(configFile string) { | ||
| var config Config | ||
| file, err := ioutil.ReadFile(configFile) | ||
| err = json.Unmarshal(file, &config) | ||
| if err != nil { | ||
| log.Fatalf("Failed to parse configuration parameters: %s", err) | ||
| } | ||
|
|
||
| ctx := context.Background() | ||
| // Use Google Application Default Credentials to authorize and authenticate the client. | ||
| // More information about Application Default Credentials and how to enable is at | ||
| // https://developers.google.com/identity/protocols/application-default-credentials. | ||
| client, err := storage.NewClient(ctx) | ||
| if err != nil { | ||
| log.Fatalf("Failed to create client: %v", err) | ||
| } | ||
|
|
||
| p.client = *client | ||
| p.bucket = config.Bucket | ||
| } | ||
|
|
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| func (p *GCSProducer) Produce(k []byte, v []byte, o any) { | ||
| ctx := context.Background() | ||
|
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| bucket := p.bucket | ||
| var key string | ||
|
|
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| if k == nil || len(k) == 0 { | ||
| // generate a UUID as index | ||
| id := uuid.New() | ||
| key = id.String() + "/.json" | ||
| } else { | ||
| key = string(k) + "/.json" | ||
| } | ||
|
|
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| objectHandle := p.client.Bucket(bucket).Object(key) | ||
| writer := objectHandle.NewWriter(ctx) | ||
| kvPair := fmt.Sprintf("%s=%s\n", key, v) | ||
|
|
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| _, err := writer.Write([]byte(kvPair)) | ||
| if err != nil { | ||
| log.Fatalf("Failed to write to GCS: %v", err) | ||
| } | ||
|
|
||
| writer.Close() | ||
|
|
||
| } | ||
|
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| func (p *GCSProducer) Close() error { | ||
| p.client.Close() | ||
| return nil | ||
| } |