Querying Log Streams

Function

This API is used to query log stream details. It helps you learn about the running and management status of the log streams and provides comprehensive and accurate data support.

Calling Method

For details, see Calling APIs.

Authorization Information

Each account has all the permissions required to call all APIs, but IAM users must be assigned the required permissions.

If you are using role/policy-based authorization, see Permissions Policies and Supported Actions for details on the required permissions.

If you are using identity policy-based authorization, the following identity policy-based permissions are required.

Action	Access Level	Resource Type (*: required)	Condition Key	Alias	Dependencies
lts:logStream:listLogStream	List	logGroup *	g:ResourceTag/<tag-key>	lts:topics:get lts:topics:list	-

URI

GET /v2/{project_id}/log-streams

**Table 1** Path Parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Definition Project ID. It can be obtained by calling an API or from the console. For details, see Obtaining a Project ID. Constraints N/A Range N/A Default Value N/A

**Table 2** Query Parameters
Parameter	Mandatory	Type	Description
log_group_name	No	String	Definition Log group name. Constraints N/A Range Use only letters, digits, hyphens (-), underscores (_), and periods (.). Do not start with a period or underscore or end with a period. Enter 1 to 64 characters. Each log group name must be unique. Default Value N/A
log_stream_name	No	String	Definition Log stream name. Constraints N/A Range Use only letters, digits, hyphens (-), underscores (_), and periods (.). Do not start with a period or underscore or end with a period. Enter 1 to 64 characters. Each log stream name must be unique. Default Value N/A

Request Parameters

**Table 3** Request header parameters
Parameter	Mandatory	Type	Description
X-Auth-Token	Yes	String	Definition User token obtained from IAM. For details about how to obtain it, see Obtaining a User Token. Constraints: N/A Range N/A Default Value N/A
Content-Type	Yes	String	Definition Message body format. Set this parameter to application/json;charset=utf8. Constraints N/A Range N/A Default Value N/A

Response Parameters

Status code: 200

**Table 4** Response body parameters
Parameter	Type	Description
log_streams	Array of LogStreamNoIsFavorite objects	Definition Log stream configuration information.

**Table 5** LogStreamNoIsFavorite
Parameter	Type	Description
creation_time	Long	Definition Time when the log stream was created. The value must be a UNIX timestamp, measured in milliseconds from January 1, 1970, 00:00:00 UTC. Range Minimum value: 1577808000000 Maximum value: 4102416000000
log_group_id	String	Definition Log group ID. Range N/A
log_stream_id	String	Definition Log stream ID. Range N/A
log_stream_name	String	Definition Log stream name. Range N/A
log_stream_name_alias	String	Definition Log stream alias. Range N/A
tag	Map<String,String>	Definition Log stream tags. Tag information of a log stream. A tag is a key-value pair. Each key is paired with its corresponding value. Key: Each tag key must be unique. It can contain up to 128 characters, including letters, digits, spaces, and the following special characters: _.:=+-@. It cannot start or end with a space or start with sys. Value: It can contain up to 255 characters, including letters, digits, spaces, and the following special characters: _.:=+-@
filter_count	Integer	Definition Number of filters. This parameter has been brought offline. Range N/A
hot_cold_separation	Boolean	Definition Whether to enable cold storage. Range true: enables cold storage. false: disables cold storage.
whether_log_storage	Boolean	Definition Whether to enable log storage. Range true: enables log storage. false: disables log storage.
auth_web_tracking	Boolean	Definition Whether to enable anonymous write. Range true: enables anonymous write. false: disables anonymous write.
ttl_in_days	Integer	Definition Log retention period for a log group. It determines how many days a log group's logs will be stored in LTS. Range N/A
hot_storage_days	Integer	Definition Standard storage period. Range N/A
is_favorite	Boolean	Definition Whether to add a log stream to favorites. Range true: adds the log stream to favorites. false: does not add log streams to favorites.

Status code: 400

**Table 6** Response body parameters
Parameter	Type	Description
error_code	String	Definition Error code. For details, see Error Codes. Range N/A
error_msg	String	Definition Error message. Range N/A

Status code: 500

**Table 7** Response body parameters
Parameter	Type	Description
error_code	String	Definition Error code. For details, see Error Codes. Range N/A
error_msg	String	Definition Error message. Range N/A

Example Requests

If you leave the request body empty, all log streams are queried. If log_group_name and log_stream_name are specified, the corresponding log stream is queried.

GET https://{endpoint}/v2/{project_id}/log-streams

/v2/{project_id}/log-streams /v2/{project_id}/log-streams?log_group_name={log_group_name} 
/v2/{project_id}/log-streams?log_stream_name={log_stream_name}  
/v2/{project_id}/log-streams?log_stream_name={log_stream_name} &log_group_name={log_group_name}

Example Responses

Status code: 200

Log stream information is returned.

{
  "log_streams" : [ {
    "log_stream_name_alias" : "lts-topic-xxxx",
    "creation_time" : 1698915657847,
    "auth_web_tracking" : false,
    "log_stream_name" : "lts-topic-xxxx",
    "is_favorite" : false,
    "hot_storage_days" : -1,
    "tag" : {
      "_sys_enterprise_project_id" : "xxxxxx"
    },
    "hot_cold_separation" : false,
    "filter_count" : 0,
    "log_stream_id" : "xxxxxxx",
    "ttl_in_days" : 7,
    "whether_log_storage" : true
  }, {
    "log_stream_name_alias" : "lts-topic-xxxx",
    "creation_time" : 1698915650021,
    "auth_web_tracking" : false,
    "log_stream_name" : "lts-topic-xxxx",
    "is_favorite" : false,
    "hot_storage_days" : -1,
    "tag" : {
      "_sys_enterprise_project_id" : "xxxxxxx"
    },
    "hot_cold_separation" : false,
    "filter_count" : 0,
    "log_stream_id" : "xxxxxxxxxxxxxxxxxxx",
    "ttl_in_days" : 7,
    "whether_log_storage" : true
  } ]
}

Status code: 400

Invalid request. Modify the request based on the description in error_msg before a retry.

{
  "error_code" : "LTS.0205",
  "error_msg" : "The log stream name has been existed"
}

Status code: 500

The server has received the request but encountered an internal error.

{
  "error_code" : "LTS.0010",
  "error_msg" : "The system encountered an internal error"
}

Status Codes

Status Code	Description
200	Log stream information is returned.
400	Invalid request. Modify the request based on the description in error_msg before a retry.
500	The server has received the request but encountered an internal error.