OnsDLQMessageGetById - ApsaraMQ for RocketMQ - Alibaba Cloud Documentation Center

Queries a dead-letter message based on the message ID. The queried information about the dead-letter message includes the point in time when the message is stored, the message body, and attributes such as the message tag and the message key.

Operation description

Note API operations provided by Alibaba Cloud are used to manage and query resources of Alibaba Cloud services. We recommend that you integrate these API operations only in management systems. Do not use these API operations in the core system of messaging services. Otherwise, system risks may occur.

This operation uses the exact match method to query a dead-letter message based on the message ID. You can obtain the message ID that is required to query the information about a dead-letter message from the SendResult parameter that is returned after the message is sent. You can also obtain the message ID by calling the OnsDLQMessagePageQueryByGroupId operation to query multiple messages at a time. The queried information about the dead-letter message includes the point in time when the message is stored, the message body, and attributes such as the message tag and the message key.

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer.

Debug

Authorization information

The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:

Operation: the value that you can use in the Action element to specify the operation on a resource.
Access level: the access level of each operation. The levels are read, write, and list.
Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
- The required resource types are displayed in bold characters.
- If the permissions cannot be granted at the resource level, All Resources is used in the Resource type column of the operation.
Condition Key: the condition key that is defined by the cloud service.
Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.

Operation	Access level	Resource type	Condition key	Associated operation
mq:QueryDLQMessage	Read	All Resources *	none	none

Request parameters

Parameter	Type	Required	Description	Example
MsgId	string	Yes	The ID of the dead-letter message that you want to query.	0BC16699165C03B925DB8A404E2D****
GroupId	string	Yes	The ID of the consumer group whose dead-letter message you want to query.	GID_test_group_id
InstanceId	string	Yes	The ID of the instance to which the message you want to query belongs.	MQ_INST_111111111111_DOxxxxxx

Response parameters

Parameter	Type	Description	Example
	object
RequestId	string	The ID of the request. This parameter is a common parameter. Each request has a unique ID.	A07E3902-B92E-44A6-B6C5-6AA111111****
Data	object	The data returned.
StoreSize	integer	The size of the message. Unit: KB.	407
ReconsumeTimes	integer	The number of retries that were performed to send the message to consumers.	1
StoreTimestamp	long	The timestamp that indicates the point in time when the ApsaraMQ for RocketMQ broker stored the message. Unit: milliseconds.	1570761026708
InstanceId	string	The ID of the instance	MQ_INST_111111111111_DOxxxxxx
MsgId	string	The ID of the dead-letter message.	0BC16699165C03B925DB8A404E2D****
StoreHost	string	The ApsaraMQ for RocketMQ broker that stores the message.	11.220.*.*:10911
Topic	string	The topic to which the message belongs.	test-mq_topic
PropertyList	object []	The attributes of the message.
Value	string	The value of the attribute.	TagA
Name	string	The name of the attribute. Valid values: TRACE_ON: indicates whether the message trace exists. KEYS: indicates the key of the message. TAGS: indicates the tag that is attached to the message. INSTANCE_ID: indicates the ID of the instance that contains the message. For information about the terms that are used in ApsaraMQ for RocketMQ, see Terms .	TAGS
BornTimestamp	long	The timestamp that indicates the point in time when the message was generated. Unit: milliseconds.	1570761026630
BodyCRC	integer	The cyclic redundancy check (CRC) value of the message body.	914112295
BornHost	string	The producer instance that generated the message.	42.120..:64646

Examples

Sample success responses

JSONformat

{
  "RequestId": "A07E3902-B92E-44A6-B6C5-6AA111111****",
  "Data": {
    "StoreSize": 407,
    "ReconsumeTimes": 1,
    "StoreTimestamp": 1570761026708,
    "InstanceId": "MQ_INST_111111111111_DOxxxxxx",
    "MsgId": "0BC16699165C03B925DB8A404E2D****",
    "StoreHost": "11.220.***.***:10911",
    "Topic": "test-mq_topic",
    "PropertyList": {
      "MessageProperty": [
        {
          "Value": "TagA",
          "Name": "TAGS"
        }
      ]
    },
    "BornTimestamp": 1570761026630,
    "BodyCRC": 914112295,
    "BornHost": "42.120.**.**:64646"
  }
}

Error codes

For a list of error codes, visit the Service error codes.

Change history

Change time	Summary of changes	Operation

No change history

View the information about a dead-letter message in the console

You can also view the information about a dead-letter message in the ApsaraMQ for RocketMQ console. For more information, see Dead-letter queues.