Aws Java sdk如何将标签设置为卷

Question

我正在尝试使用标签创建一个 ec2 卷

        //Create ec2 client using credentials
    AmazonEC2 ec2 = AmazonEC2ClientBuilder.standard().withCredentials(creds).withRegion(region).build();

    List<TagSpecification> ts = new ArrayList<TagSpecification>();
    ts.add(new TagSpecification().withTags(new Tag("Name","HelloWorld")));

    CreateVolumeRequest cvr = new CreateVolumeRequest(10,azone);
    cvr.setVolumeType(VolumeType.Gp2);
    cvr.setTagSpecifications(ts);

    ec2.createVolume(cvr);

但是当我尝试执行上述代码时，它会抛出以下错误。

Exception in thread "main" com.amazonaws.services.ec2.model.AmazonEC2Exception: 'null' is not a valid taggable resource type for this operation. (Service: AmazonEC2; Status Code: 400; Error Code: InvalidParameterValue)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1588)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1258)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1030)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:742)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:716)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:699)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:667)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:649)
    at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:513)
    at com.amazonaws.services.ec2.AmazonEC2Client.doInvoke(AmazonEC2Client.java:13611)
    at com.amazonaws.services.ec2.AmazonEC2Client.invoke(AmazonEC2Client.java:13587)
    at com.amazonaws.services.ec2.AmazonEC2Client.executeCreateVolume(AmazonEC2Client.java:3453)
    at com.amazonaws.services.ec2.AmazonEC2Client.createVolume(AmazonEC2Client.java:3430)
    at S3Driver.main(S3Driver.java:49)

Process finished with exit code 1

Answer 1

以下代码应创建一个新卷并为其分配标签。

public void createVolumeWithTags() {
    AmazonEC2 amazonEC2 = AmazonEC2ClientBuilder.standard()
        .withCredentials(new AWSStaticCredentialsProvider(basicAWSCredentials))
        .withRegion(Regions.US_WEST_2)
        .build();

    CreateVolumeRequest createVolumeRequest = new CreateVolumeRequest(10, "us-west-2a");
    CreateVolumeResult createVolumeResult = amazonEC2.createVolume(createVolumeRequest);

    ArrayList<Tag> instanceTags = new ArrayList<Tag>();
    instanceTags.add(new Tag("Name", "HelloWorld"));
    CreateTagsRequest createTagsRequest = new CreateTagsRequest().withTags(instanceTags).withResources(createVolumeResult.getVolume().getVolumeId());

    amazonEC2.createTags(createTagsRequest);
}

Answer 2

上述答案要求您首先创建卷，然后再次调用 EC2 API 以单独标记资源。虽然它确实有效，但对 API 的额外调用确实需要更多时间，并会产生额外的异常/失败场景。

以下代码只需对原始代码稍作调整即可实现您的目标，并且无需单独调用 ec2 api（标签在创建时应用）。唯一的变化是 - .withResourceType(ResourceType.Volume)。

        //Create ec2 client using credentials
    AmazonEC2 ec2 = AmazonEC2ClientBuilder.standard().withCredentials(creds).withRegion(region).build();

    List<TagSpecification> ts = new ArrayList<TagSpecification>();
    ts.add(new TagSpecification().withTags(new Tag("Name","HelloWorld"))
      .withResourceType(ResourceType.Volume));

    CreateVolumeRequest cvr = new CreateVolumeRequest(10,azone);
    cvr.setVolumeType(VolumeType.Gp2);
    cvr.setTagSpecifications(ts);

    ec2.createVolume(cvr);

进一步的简化是使用 varargs 方法而不是创建一个列表（特别是如果你只设置一个标签）-

        //Create ec2 client using credentials
    AmazonEC2 ec2 = AmazonEC2ClientBuilder.standard().withCredentials(creds).withRegion(region).build();

    TagSpecification ts = new TagSpecification()
      .withTags(new Tag("Name","HelloWorld"))
      .withResourceType(ResourceType.Volume);

    CreateVolumeRequest cvr = new CreateVolumeRequest(10,azone)
      .withVolumeType(VolumeType.Gp2);
      .withTagSpecifications(ts);

    ec2.createVolume(cvr);