Obtaining Files from a Specified Directory

Updated on 2022-12-08 GMT+08:00

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Function

This API is used to obtain the list of files from a specified directory in an MRS cluster.

URI

Format
GET /v2/{project_id}/clusters/{cluster_id}/files?path={directory}&offset={offset}&limit={limit}&sort_key={sort_key}&order={order}

URI parameter description

**Table 1** URI parameter description
Parameter	Mandatory	Description
project_id	Yes	Project ID. For details on how to obtain the project ID, see Obtaining a Project ID.
cluster_id	Yes	Cluster ID For details on how to obtain the cluster ID, see Obtaining a Cluster ID.
path	Yes	File directory. For example, to access the /tmp/test directory list, the directory must be a directory. The overall URI is as follows: /v2/{project_id}/clusters/{cluster_id}/files?path=%2Ftmp%2Ftest A single-level directory must comply with the following rules: The directory path cannot be left blank. The value cannot start or end with a period (.). The value cannot contain the following characters: /:*?"<>\|\;&,'`!{}[]$%+ The value cannot exceed 255 characters.
offset	No	Pagination parameter. The file list is queried from the offset. The default value is 0.
limit	No	Pagination parameter, indicating the maximum number of records on a page. The default value is 100 and the maximum value is 1000.
sort_key	No	The list is sorted by this attribute. The following attributes are supported: path_suffix: file or directory name length: file size modification_time: modification time The default value is path_suffix, indicating that files or directories are sorted by file or directory name.
order	No	List sorting mode: desc: Files are displayed in the descending order. asc: Files are displayed in ascending order. The default value is desc.

Request

Request parameters

None.

Response

**Table 2** Response parameter description
Parameter	Type	Description
total_count	Integer	Total number of files, which is irrelevant to pagination.
files	Array of FileStatus	File list. For details, see Table 3.

**Table 3** FileStatus description
Parameter	Type	Description
path_suffix	String	File name extension in the current directory. For example, if you obtain the /tmp/test file in the /tmp directory, the value of path_suffix is test.
owner	String	File owner.
group	String	File owner group.
permission	String	Permission information.
replication	Integer	Number of replicas.
block_size	Integer	Block size.
length	Integer	File length.
type	String	The following file types are supported: FILE: file DIRECTORY: directory
children_num	Integer	Number of files in the directory.
access_time	Long	File access time.
modification_time	Long	File modification time

Example

Example request
None.

Example response

Example of a successful response

{
    "total_count": 2,
    "files": [
        {
            "access_time": 0,
            "block_size": 0,
            "children_num": 0,
            "group": "hadoop",
            "length": 0,
            "modification_time": 1587179516623,
            "owner": "hdfs",
            "path_suffix": "app-logs",
            "permission": "777",
            "replication": 0,
            "type": "DIRECTORY"
        },
        {
            "access_time": 1587267212761,
            "block_size": 134217728,
            "children_num": 0,
            "group": "hadoop",
            "length": 23666188,
            "modification_time": 1587222156003,
            "owner": "root",
            "path_suffix": "data-m-00000",
            "permission": "644",
            "replication": 3,
            "type": "FILE"
        }
    ]
}

Status Code

For details about status codes, see Status Codes.

Parent topic: Cluster HDFS File API

Previous topic: Cluster HDFS File API

Next topic: Agency Management

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