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doc-exports/docs/dms/api-ref/ShowInstanceTopicDetail.html
Chen, Junjie f5b629cc78 DMS API 20240722 version 
Reviewed-by: Ziuzko, Stanislav <stanislav.ziuzko@t-systems.com>
Co-authored-by: Chen, Junjie <chenjunjie@huawei.com>
Co-committed-by: Chen, Junjie <chenjunjie@huawei.com>
2024-09-06 09:17:23 +00:00

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<a name="ShowInstanceTopicDetail"></a><a name="ShowInstanceTopicDetail"></a>
<h1 class="topictitle1">Querying Topic Details</h1>
<div id="body1708331107508"><div class="section"><h4 class="sectiontitle">Function</h4><p>This API is used to query topic details of a Kafka instance. (Up to 1s for each instance call)</p>
</div>
<div class="section" id="ShowInstanceTopicDetail__atuogenerate_1"><h4 class="sectiontitle">URI</h4><p>GET /v2/{project_id}/instances/{instance_id}/management/topics/{topic}</p>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Path Parameters</caption><thead align="left"><tr><th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.2.3.2.5.1.1"><p>Parameter</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.2.3.2.5.1.2"><p>Mandatory</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.2.3.2.5.1.3"><p>Type</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="40%" id="mcps1.3.2.3.2.5.1.4"><p>Description</p>
</th>
</tr>
</thead>
<tbody><tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.3.2.5.1.1 "><p>project_id</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.3.2.5.1.2 "><p>Yes</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.3.2.5.1.3 "><p>String</p>
</td>
<td class="cellrowborder" valign="top" width="40%" headers="mcps1.3.2.3.2.5.1.4 "><p>Project ID. For details about how to obtain it, see <a href="kafka-api-0036212547.html">Obtaining a Project ID</a>.</p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.3.2.5.1.1 "><p>instance_id</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.3.2.5.1.2 "><p>Yes</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.3.2.5.1.3 "><p>String</p>
</td>
<td class="cellrowborder" valign="top" width="40%" headers="mcps1.3.2.3.2.5.1.4 "><p>Instance ID.</p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.3.2.5.1.1 "><p>topic</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.3.2.5.1.2 "><p>Yes</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.3.2.5.1.3 "><p>String</p>
</td>
<td class="cellrowborder" valign="top" width="40%" headers="mcps1.3.2.3.2.5.1.4 "><p>Topic name.</p>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="section"><h4 class="sectiontitle">Request Parameters</h4><p>None</p>
</div>
<div class="section"><h4 class="sectiontitle">Response Parameters</h4><p><strong>Status code: 200</strong></p>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="ShowInstanceTopicDetail__response_ShowInstanceTopicDetailResp" frame="border" border="1" rules="all"><caption><b>Table 2 </b>Response body parameters</caption><thead align="left"><tr><th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.4.3.2.4.1.1"><p>Parameter</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.4.3.2.4.1.2"><p>Type</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="60%" id="mcps1.3.4.3.2.4.1.3"><p>Description</p>
</th>
</tr>
</thead>
<tbody><tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.3.2.4.1.1 "><p>topic</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.3.2.4.1.2 "><p>String</p>
</td>
<td class="cellrowborder" valign="top" width="60%" headers="mcps1.3.4.3.2.4.1.3 "><p>Topic name.</p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.3.2.4.1.1 "><p>partitions</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.3.2.4.1.2 "><p>Array of <a href="#ShowInstanceTopicDetail__response_partitions">partitions</a> objects</p>
</td>
<td class="cellrowborder" valign="top" width="60%" headers="mcps1.3.4.3.2.4.1.3 "><p>Partition list.</p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.3.2.4.1.1 "><p>group_subscribed</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.3.2.4.1.2 "><p>Array of strings</p>
</td>
<td class="cellrowborder" valign="top" width="60%" headers="mcps1.3.4.3.2.4.1.3 "><p>List of consumer groups that subscribe to the topic.</p>
</td>
</tr>
</tbody>
</table>
</div>
<div class="tablenoborder"><a name="ShowInstanceTopicDetail__response_partitions"></a><a name="response_partitions"></a><table cellpadding="4" cellspacing="0" summary="" id="ShowInstanceTopicDetail__response_partitions" frame="border" border="1" rules="all"><caption><b>Table 3 </b>partitions</caption><thead align="left"><tr><th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.4.4.2.4.1.1"><p>Parameter</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.4.4.2.4.1.2"><p>Type</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="60%" id="mcps1.3.4.4.2.4.1.3"><p>Description</p>
</th>
</tr>
</thead>
<tbody><tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.4.2.4.1.1 "><p>partition</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.4.2.4.1.2 "><p>Integer</p>
</td>
<td class="cellrowborder" valign="top" width="60%" headers="mcps1.3.4.4.2.4.1.3 "><p>Partition ID.</p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.4.2.4.1.1 "><p>leader</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.4.2.4.1.2 "><p>Integer</p>
</td>
<td class="cellrowborder" valign="top" width="60%" headers="mcps1.3.4.4.2.4.1.3 "><p>ID of the broker where the leader replica resides.</p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.4.2.4.1.1 "><p>leo</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.4.2.4.1.2 "><p>Integer</p>
</td>
<td class="cellrowborder" valign="top" width="60%" headers="mcps1.3.4.4.2.4.1.3 "><p>LEO of the partition leader replica.</p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.4.2.4.1.1 "><p>hw</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.4.2.4.1.2 "><p>Integer</p>
</td>
<td class="cellrowborder" valign="top" width="60%" headers="mcps1.3.4.4.2.4.1.3 "><p>High watermark (HW) of the partition.</p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.4.2.4.1.1 "><p>lso</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.4.2.4.1.2 "><p>Integer</p>
</td>
<td class="cellrowborder" valign="top" width="60%" headers="mcps1.3.4.4.2.4.1.3 "><p>Log start offset (LSO) of the partition leader replica.</p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.4.2.4.1.1 "><p>last_update_timestamp</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.4.2.4.1.2 "><p>Long</p>
</td>
<td class="cellrowborder" valign="top" width="60%" headers="mcps1.3.4.4.2.4.1.3 "><p>Time when the last message was written to the partition.</p>
<p>The value is a Unix timestamp.</p>
<p>Unit: ms</p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.4.2.4.1.1 "><p>replicas</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.4.2.4.1.2 "><p>Array of <a href="#ShowInstanceTopicDetail__response_replicas">replicas</a> objects</p>
</td>
<td class="cellrowborder" valign="top" width="60%" headers="mcps1.3.4.4.2.4.1.3 "><p>Replica list.</p>
</td>
</tr>
</tbody>
</table>
</div>
<div class="tablenoborder"><a name="ShowInstanceTopicDetail__response_replicas"></a><a name="response_replicas"></a><table cellpadding="4" cellspacing="0" summary="" id="ShowInstanceTopicDetail__response_replicas" frame="border" border="1" rules="all"><caption><b>Table 4 </b>replicas</caption><thead align="left"><tr><th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.4.5.2.4.1.1"><p>Parameter</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.4.5.2.4.1.2"><p>Type</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="60%" id="mcps1.3.4.5.2.4.1.3"><p>Description</p>
</th>
</tr>
</thead>
<tbody><tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.5.2.4.1.1 "><p>broker</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.5.2.4.1.2 "><p>Integer</p>
</td>
<td class="cellrowborder" valign="top" width="60%" headers="mcps1.3.4.5.2.4.1.3 "><p>ID of the broker where the replica resides.</p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.5.2.4.1.1 "><p>leader</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.5.2.4.1.2 "><p>Boolean</p>
</td>
<td class="cellrowborder" valign="top" width="60%" headers="mcps1.3.4.5.2.4.1.3 "><p>Whether the replica is the leader.</p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.5.2.4.1.1 "><p>in_sync</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.5.2.4.1.2 "><p>Boolean</p>
</td>
<td class="cellrowborder" valign="top" width="60%" headers="mcps1.3.4.5.2.4.1.3 "><p>Whether the replica is in the ISR.</p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.5.2.4.1.1 "><p>size</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.5.2.4.1.2 "><p>Integer</p>
</td>
<td class="cellrowborder" valign="top" width="60%" headers="mcps1.3.4.5.2.4.1.3 "><p>Current log size of the replica. Unit: byte.</p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.5.2.4.1.1 "><p>lag</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.5.2.4.1.2 "><p>Long</p>
</td>
<td class="cellrowborder" valign="top" width="60%" headers="mcps1.3.4.5.2.4.1.3 "><p>Number of messages that lag behind the high watermark in the replica.</p>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="section"><h4 class="sectiontitle">Example Requests</h4><p>Querying details about a specified topic</p>
<pre class="screen">GET https://{endpoint}/v2/{project_id}/instances/{instance_id}/management/topics/{topic}</pre>
</div>
<div class="section"><h4 class="sectiontitle">Example Responses</h4><p><strong>Status code: 200</strong></p>
<p>The query is successful.</p>
<pre class="screen">{
"topic" : "test",
"partitions" : [ {
"partition" : 0,
"leader" : 2,
"replicas" : [ {
"broker" : 2,
"leader" : true,
"in_sync" : true,
"size" : 123971146,
"lag" : 0
}, {
"broker" : 1,
"leader" : false,
"in_sync" : true,
"size" : 123971146,
"lag" : 0
}, {
"broker" : 0,
"leader" : false,
"in_sync" : true,
"size" : 123971146,
"lag" : 0
} ],
"lso" : 0,
"leo" : 13598,
"hw" : 13598,
"last_update_timestamp" : 1571477180985
}, {
"partition" : 2,
"leader" : 1,
"replicas" : [ {
"broker" : 1,
"leader" : true,
"in_sync" : true,
"size" : 123889531,
"lag" : 0
}, {
"broker" : 0,
"leader" : false,
"in_sync" : true,
"size" : 123889531,
"lag" : 0
}, {
"broker" : 2,
"leader" : false,
"in_sync" : true,
"size" : 123889531,
"lag" : 0
} ],
"lso" : 0,
"leo" : 13601,
"hw" : 13601,
"last_update_timestamp" : 1571477077146
}, {
"partition" : 1,
"leader" : 0,
"replicas" : [ {
"broker" : 0,
"leader" : true,
"in_sync" : true,
"size" : 127245604,
"lag" : 0
}, {
"broker" : 2,
"leader" : false,
"in_sync" : true,
"size" : 127245604,
"lag" : 0
}, {
"broker" : 1,
"leader" : false,
"in_sync" : true,
"size" : 127245604,
"lag" : 0
} ],
"lso" : 0,
"leo" : 13599,
"hw" : 13599,
"last_update_timestamp" : 1571477172959
} ],
"group_subscribed" : [ "test-consumer-group" ]
}</pre>
</div>
<div class="section"><h4 class="sectiontitle">Status Codes</h4>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="ShowInstanceTopicDetail__status_code" frame="border" border="1" rules="all"><thead align="left"><tr><th align="left" class="cellrowborder" valign="top" width="15%" id="mcps1.3.7.2.1.3.1.1"><p>Status Code</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="85%" id="mcps1.3.7.2.1.3.1.2"><p>Description</p>
</th>
</tr>
</thead>
<tbody><tr><td class="cellrowborder" valign="top" width="15%" headers="mcps1.3.7.2.1.3.1.1 "><p>200</p>
</td>
<td class="cellrowborder" valign="top" width="85%" headers="mcps1.3.7.2.1.3.1.2 "><p>The query is successful.</p>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="section"><h4 class="sectiontitle">Error Codes</h4><p>See <a href="ErrorCode.html">Error Codes</a>.</p>
</div>
</div>
<div>
<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="topic_300000004.html">Topic Management</a></div>
</div>
</div>
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