Configuring Lifecycle Management

When uploading an object or initializing a multipart upload, you can directly set the expiration time for the object. Sample code is as follows:

// Create an instance of ObsClient.
var obsClient = new ObsClient({
    // Hard-coded or plaintext AK/SK are risky. For security purposes, encrypt your AK/SK and store them in the configuration file or environment variables. In this example, the AK/SK are stored in environment variables for identity authentication. Before running this example, configure environment variables AccessKeyID and SecretAccessKey.
    // The front-end code does not have the process environment variable, so you need to use a module bundler like webpack to define the process variable.
    // Obtain an AK/SK pair on the management console.
    access_key_id: process.env.AccessKeyID,
    secret_access_key: process.env.SecretAccessKey,
    server: 'https://your-endpoint'
});

// When uploading an object, set the object to expire after 30 days.
obsClient.putObject({
       Bucket : 'bucketname',
       Key : 'objectname',
       Body : 'Hello OBS',
       Expires : 30
}, function(err, result){
       if(err){
              console.error('Error-->' + err);
       }else{
              console.log('Status-->' + result.CommonMsg.Status);
       }
});

// When initializing a multipart upload, set the object to expire 60 days after combination.
obsClient.initiateMultipartUpload({
       Bucket : 'bucketname',
       Key : 'objectname',
       ContentType : 'text/plain',
       Expires : 60
}, function(err, result) {
       if(err){
              console.error('Error-->' + err);
       }else{
              console.log('Status-->' + result.CommonMsg.Status);
              if(result.CommonMsg.Status < 300 && result.InterfaceResult){
                     console.log('UploadId-->' + result.InterfaceResult.UploadId);
              }
       }
});

• Use the Expires parameter to specify expiration time for the object.
• The previous mode specifies the time duration in days after which an object will expire. The OBS server automatically clears expired objects.
• The object expiration time set in the preceding method takes precedence over the bucket lifecycle rule.