tencent cloud

APIs

DescribeLogContext

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Terakhir diperbarui: 2026-06-10 15:01:45

1. API Description

Domain name for API request: cls.intl.tencentcloudapi.com.

This API is used to search for content near the log context. For more details, see Context Search.The maximum value of API's return data packet is 49MB. It is recommended to enable gzip compression (HTTP Request Header Accept-Encoding: gzip).

A maximum of 20 requests can be initiated per second for this API.

This action accepts http content encodings: gzip

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2. Input Parameters

The following request parameter list only provides API request parameters and some common parameters. For the complete common parameter list, see Common Request Parameters.

Parameter Name Required Type Description
Action Yes String Common Params. The value used for this API: DescribeLogContext.
Version Yes String Common Params. The value used for this API: 2020-10-16.
Region Yes String Common Params. For more information, please see the list of regions supported by the product.
TopicId Yes String Log topic Id to query.
-Obtain the log topic Id through Get Log Topic List.
- Obtain the log topic Id through Create Log Topic.
BTime Yes String Log time, which is the Time in the Results structure in the returned information of the retrieve and analyze logs api, should be converted from the millisecond-level Unix timestamp to a string in the YYYY-mm-dd HH:MM:SS.FFF format according to the UTC+8 time zone.
PkgId Yes String Log package sequence number, which is the PkgId in the Results structure returned by the retrieve and analyze logs api (https://www.tencentcloud.com/document/product/614/56447?from_cn_redirect=1).
PkgLogId Yes Integer Sequence number of a log within the log package, which is the PkgLogId in the Results structure returned by the retrieve and analyze logs api.
PrevLogs No Integer The previous ${PrevLogs} logs. Default value: 10.
NextLogs No Integer The next ${NextLogs} logs. Default value: 10.
Query No String Query statement, filtering the log context with a maximum length of 12KB
The statement consists of [retrieval criteria] and does not support SQL statement.
From No Integer Context search start time, unit: millisecond-level timestamp
Note:
-When From is empty, it means no restrictions on the start time of context search.
-From and To are not empty, From < To
-Currently, the system only supports the Shanghai/Virginia/Singapore region.
To No Integer End time of context search. Measurement unit: millisecond-level timestamp.
Note:
-When To is empty, it means no restrictions on the end time of context search.
-From and To are not empty, From < To
-Currently, the system only supports the Shanghai/Virginia/Singapore region.

3. Output Parameters

Parameter Name Type Description
LogContextInfos Array of LogContextInfo Log context information set
PrevOver Boolean Whether the previous logs have been fully returned (PrevOver is false indicates that some previous logs are yet to be returned).
NextOver Boolean Whether the subsequent logs have been fully returned (NextOver is false indicates that some subsequent logs are yet to be returned).
RequestId String The unique request ID, generated by the server, will be returned for every request (if the request fails to reach the server for other reasons, the request will not obtain a RequestId). RequestId is required for locating a problem.

4. Example

Example1 Querying the Context of a Log

This example shows you how to query the context of a log.

Input Example

POST / HTTP/1.1
Host: cls.intl.tencentcloudapi.com
Content-Type: application/json
X-TC-Action: DescribeLogContext
<Common request parameters>

{
    "TopicId": "682d0718-07bb-4ec0-9fda-f1e9a2767e0b",
    "BTime": "2021-04-25 14:25:00.000",
    "PkgId": "528C1318606EFEB8-1A7",
    "PkgLogId": 65536,
    "PrevLogs": 10,
    "NextLogs": 10
}

Output Example

{
    "Response": {
        "NextOver": false,
        "PrevOver": false,
        "LogContextInfos": [
            {
                "Content": "xxxxxxx",
                "HostName": "abc",
                "Filename": "/usr/local/services/cls_cgi_api3-1.0/log/cls_cgi.log.20210425",
                "PkgId": "528C1318606EFEB8-1A0",
                "PkgLogId": 196609,
                "Source": "100.105.60.255",
                "BTime": 323232323
            },
            {
                "Content": "x1x2x3",
                "HostName": "abcd",
                "Filename": "/usr/local/services/cls_cgi_api3-1.0/log/cls_cgi.log.20210425",
                "PkgId": "528C1318606EFEB8-1A1",
                "PkgLogId": 196609,
                "Source": "100.105.60.255",
                "BTime": 323232323
            }
        ],
        "RequestId": "b276cb6e-4687-11eb-b378-0242ac130002"
    }
}

5. Developer Resources

SDK

TencentCloud API 3.0 integrates SDKs that support various programming languages to make it easier for you to call APIs.

Command Line Interface

6. Error Code

The following only lists the error codes related to the API business logic. For other error codes, see Common Error Codes.

Error Code Description
FailedOperation Operation failed.
FailedOperation.InvalidContext The search cursor is invalid or does not exist.
FailedOperation.QueryError The query statement failed to run.
FailedOperation.SearchTimeout The query timed out.
FailedOperation.SyntaxError An error occurred while parsing the query statement.
FailedOperation.TopicIsolated The log topic has been isolated.
InternalError Internal error.
InternalError.SearchFailed Retrieval failed
InvalidParameter Incorrect parameter.
LimitExceeded.LogSearch The number of concurrent queries exceeds the limit, which is 15 per topic.
LimitExceeded.SearchResultTooLarge The number of logs returned by the search API exceeds the upper limit (20 MB).
MissingParameter Missing parameter.
OperationDenied Operation denied.
OperationDenied.AccountDestroy The account has been terminated.
OperationDenied.AccountIsolate The account has overdue payments.
OperationDenied.AccountNotExists The account does not exist.
ResourceNotFound.TopicNotExist The log topic does not exist.

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