Copying an Object

Copying an Object in Simple Mode

Sample code:

// Initialize configuration parameters.
ObsConfig config = new ObsConfig();
config.Endpoint = "https://your-endpoint";
// 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.
// Obtain an AK/SK pair on the management console. For details, see https://support.huaweicloud.com/intl/en-us/usermanual-ca/ca_01_0003.html.
string accessKey= Environment.GetEnvironmentVariable("AccessKeyID", EnvironmentVariableTarget.Machine);
string secretKey= Environment.GetEnvironmentVariable("SecretAccessKey", EnvironmentVariableTarget.Machine);
// Create an instance of ObsClient.
ObsClient client = new ObsClient(accessKey, secretKey, config);

// Copy an object.
try
{
    CopyObjectRequest request = new CopyObjectRequest();
    request.SourceBucketName = "sourcebucketname";
    request.SourceObjectKey = "sourceobjectname";
    request.BucketName = "destbucketname";
    request.ObjectKey = "destobjectName";
    CopyObjectResponse response = client.CopyObject(request);
    Console.WriteLine("Copy object response: {0}", response.StatusCode);
}
catch (ObsException ex)
{
    Console.WriteLine("ErrorCode: {0}", ex.ErrorCode);
    Console.WriteLine("ErrorMessage: {0}", ex.ErrorMessage);
} 

Rewriting Object Properties

The following sample code shows how to rewrite object properties.

// Initialize configuration parameters.
ObsConfig config = new ObsConfig();
config.Endpoint = "https://your-endpoint";
// 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.
// Obtain an AK/SK pair on the management console. For details, see https://support.huaweicloud.com/intl/en-us/usermanual-ca/ca_01_0003.html.
string accessKey= Environment.GetEnvironmentVariable("AccessKeyID", EnvironmentVariableTarget.Machine);
string secretKey= Environment.GetEnvironmentVariable("SecretAccessKey", EnvironmentVariableTarget.Machine);
// Create an instance of ObsClient.
ObsClient client = new ObsClient(accessKey, secretKey, config);
//Rewrite object properties.
try
{
    CopyObjectRequest request = new CopyObjectRequest();
    request.SourceBucketName = "sourcebucketname";
    request.SourceObjectKey = "sourceobjectname";
    request.BucketName = "destbucketname";
    request.ObjectKey = "destobjectName";
    request.StorageClass = StorageClassEnum.Warm;
    request.ContentType = "image/jpeg";
    request.MetadataDirective = MetadataDirectiveEnum.Replace;
    CopyObjectResponse response = client.CopyObject(request);
    Console.WriteLine("Copy object response: {0}", response.StatusCode);
}
catch (ObsException ex)
{
    Console.WriteLine("ErrorCode: {0}", ex.ErrorCode);
    Console.WriteLine("ErrorMessage: {0}", ex.ErrorMessage);
} 

Copying an Object by Specifying Conditions

When copying an object, you can specify one or more restriction conditions. If the conditions are met, the object will be copied. Otherwise, an exception will be thrown and the copy will fail.

You can set the following conditions:

Modifying the Object ACL

Sample code:

// Initialize configuration parameters.
ObsConfig config = new ObsConfig();
config.Endpoint = "https://your-endpoint";
// 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.
// Obtain an AK/SK pair on the management console. For details, see https://support.huaweicloud.com/intl/en-us/usermanual-ca/ca_01_0003.html.
string accessKey= Environment.GetEnvironmentVariable("AccessKeyID", EnvironmentVariableTarget.Machine);
string secretKey= Environment.GetEnvironmentVariable("SecretAccessKey", EnvironmentVariableTarget.Machine);
// Create an instance of ObsClient.
ObsClient client = new ObsClient(accessKey, secretKey, config);
// Rewrite the object ACL.
try
{
    CopyObjectRequest request = new CopyObjectRequest();
    request.SourceBucketName = "sourcebucketname";
    request.SourceObjectKey = "sourceobjectname";
    request.BucketName = "destbucketname";
    request.ObjectKey = "destobjectName";
    request.CannedAcl = CannedAclEnum.PublicRead;
    CopyObjectResponse response = client.CopyObject(request);
    Console.WriteLine("Copy object response: {0}", response.StatusCode);
}
catch (ObsException ex)
{
    Console.WriteLine("ErrorCode: {0}", ex.ErrorCode);
    Console.WriteLine("ErrorMessage: {0}", ex.ErrorMessage);
}