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DocumentationCloud Object StorageSDK DocumentationJava SDKFile ProcessingHash Calculation
Hash Calculation
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Last updated: 2024-02-02 16:51:03
Hash Calculation
Last updated: 2024-02-02 16:51:03
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Overview

This document provides an overview of APIs and SDK code samples for hash calculation in CI.
API
Description
Creates a hash calculation job.
Queries the result of a specified hash calculation job.

Submitting a Hash Calculation Job

Feature description

This API is used to submit a job to perform hash calculation and asynchronously return a calculated hash value.

Method prototype

public FileProcessJobResponse createFileProcessJob(FileProcessRequest request);

Parameter description

Request has the following sub-nodes:
Node Name (Keyword)
Parent Node
Description
Type
Required
tag
Request
Job type. It is FileHashCode for hash calculation.
String
Yes
operation
Request
Hash calculation rule
Container
Yes
queueId
Request
ID of the queue where the job is in
String
Yes
callBackFormat
Request
Job callback format, which can be JSON or XML (default). It takes priority over that of the queue.
String
No
callBackType
Request
Job callback type, which can be Url (default) or TDMQ. It takes priority over that of the queue.
String
No
callBack
Request
Job callback address. It takes higher priority over that of the queue.
String
No
callBackMqConfig
Request
TDMQ configuration for job callback as described in Structure, which is required if CallBackType is TDMQ.
Container
No
Input has the following sub-nodes:
Node Name (Keyword)
Parent Node
Description
Type
Required
object
Request.Input
Filename, which is the full name of the file in the bucket.
String
Yes
Operation has the following sub-nodes:
Node Name (Keyword)
Parent Node
Description
Type
Required
fileHashCodeConfig
Request.Operation
Hash calculation rule
Container
Yes
userData
Request.Operation
The user information passed through, which is printable ASCII codes of up to 1,024 in length.
String
No
FileHashCodeConfig has the following sub-nodes:
Node Name (Keyword)
Parent Node
Description
Type
Required
type
Request.Operation.FileHashCodeConfig
Hash algorithm. Valid values: MD5, SHA1, SHA256
String
Yes
addToHeader
Request.Operation.FileHashCodeConfig
Whether to add the calculated hash value to the custom header in the file. Valid values: true, false (default)
The custom header varies depending on Type. For example, if Type is MD5, the custom header is x-cos-meta-md5.
String
No

Response description

Success: The FileProcessJobResponse object response information is returned.
Failure: An error (such as the bucket does not exist) occurs, throwing the "CosClientException" or "CosServiceException" exception. For more information, please see Troubleshooting.

Sample request

//1. Create a job request object
FileProcessRequest request = new FileProcessRequest();
//2. Add request parameters as detailed in the API documentation
request.setBucketName("demo-1234567890");
request.setTag(FileProcessJobType.FileHashCode);
request.getInput().setObject("input/1.mp4");
FileHashCodeConfig fileHashCodeConfig = request.getOperation().getFileHashCodeConfig();
fileHashCodeConfig.setType("MD5");
fileHashCodeConfig.setAddToHeader("true");
request.setQueueId("p1ff062b35a494cf0ac4b572df22a****");
//3. Call the API to get the job response object
FileProcessJobResponse response = client.createFileProcessJob(request);

Querying Hash Calculation Result

Feature description

This API is used to query the details of a file processing job by job ID.

Method prototype

public FileProcessJobResponse describeFileProcessJob(FileProcessRequest request);

Parameter description

Parameter
Description
Type
Required
bucketName
Bucket name in the format of BucketName-APPID. For more information, see Bucket Overview.
String
Yes
jobId
ID of the job to be queried.
String
Yes

Response description

Success: A job details response wrapper class is returned, which contains the job details object FileProcessJobResponse.
Failure: An error (such as authentication failure) occurs, throwing the "CosClientException" or "CosServiceException" exception. For more information, please see Troubleshooting.

Sample request

//1. Create a job request object
FileProcessRequest request = new FileProcessRequest();
//2. Add request parameters as detailed in the API documentation
request.setBucketName("demo-1234567890");
request.setJobId("fda7eb1607b8411ed8c182156726*****");
//3. Call the API to get the job response object
FileProcessJobResponse response = client.describeFileProcessJob(request);

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