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创建触发器

项目
08/05/2023

该 Create Trigger 操作在集合中创建新的触发器。

请求

方法	请求 URI	说明
POST	`https://{databaseaccount}.documents.azure.com/dbs/{db-id}/colls/{coll-id}/triggers`	请注意，{databaseaccount} 是在订阅下创建的 Azure Cosmos DB 帐户的名称。 {db-id} 值是创建触发器的数据库的用户生成的名称/ID，而不是数据库 (删除) 的系统生成的 ID。 {coll-id} 值是创建触发器的集合的名称。

标头

有关所有 Azure Cosmos DB 请求使用的标头，请参阅常见的 Azure Cosmos DB REST 请求标头。

正文

属性	必选	类型	说明
id	必须	字符串	它是用来标识该触发器的唯一名称。 ID 不得超过 255 个字符。
body	必须	字符串	它是触发器的主体。
triggerOperation	必须	字符串	它是调用触发器的操作类型。可接受的值为： All、 Create、 Replace 和 Delete。
triggerType	必须	字符串	此值指定触发触发器的时间。可接受的值为： Pre 和 Post。前触发器在操作之前触发，而 Post 触发器在操作之后触发。

{  
    "body": "function updateMetadata() {\r\n    var context = getContext();\r\n    var collection = context.getCollection();\r\n    var response = context.getResponse();\r\n    var createdDocument = response.getBody();\r\n\r\n    // query for metadata document\r\n    var filterQuery = 'SELECT * FROM root r WHERE r.id = \"_metadata\"';\r\n    var accept = collection.queryDocuments(collection.getSelfLink(), filterQuery,\r\n      updateMetadataCallback);\r\n    if(!accept) throw \"Unable to update metadata, abort\";\r\n\r\n    function updateMetadataCallback(err, documents, responseOptions) {\r\n      if(err) throw new Error(\"Error\" + err.message);\r\n           if(documents.length != 1) throw 'Unable to find metadata document';\r\n           var metadataDocument = documents[0];\r\n\r\n           // update metadata\r\n           metadataDocument.createdDocuments += 1;\r\n           metadataDocument.createdNames += \" \" + createdDocument.id;\r\n           var accept = collection.replaceDocument(metadataDocument._self,\r\n               metadataDocument, function(err, docReplaced) {\r\n                  if(err) throw \"Unable to update metadata, abort\";\r\n               });\r\n           if(!accept) throw \"Unable to update metadata, abort\";\r\n           return;          \r\n    }",  
    "id": "PostTrigger-UpdateMetaAll",  
    "triggerOperation": "All",  
    "triggerType": "Post"  
}

响应

标头

有关所有 Azure Cosmos DB 响应返回的标头，请参阅常见的 Azure Cosmos DB REST 响应标头。

状态代码

下表列出了此操作返回的常见状态代码。有关状态代码的完整列表，请参阅 HTTP 状态代码。

HTTP 状态代码	说明
201 Created	操作成功。
400 错误的请求	JSON 正文无效。检查是否缺少大括号或引号。
409 冲突	为新触发器提供的 ID 已被现有触发器占用。

正文

属性	说明
_摆脱	它是系统生成的属性。资源 ID (_rid) 是一个唯一标识符，也是按资源模型上的资源堆栈分层的标识符。它可供内部用于放置和导航触发器资源。
_ts	它是系统生成的属性。它指定资源的上次更新时间戳。高值是一个时间戳。
_自我	它是系统生成的属性。它是资源的唯一可寻址 URI。
_Etag	它是一个系统生成的属性，指定乐观并发控制所需的资源 etag。

{  
    "body": "function updateMetadata() {\r\n    var context = getContext();\r\n    var collection = context.getCollection();\r\n    var response = context.getResponse();\r\n    var createdDocument = response.getBody();\r\n\r\n    // query for metadata document\r\n    var filterQuery = 'SELECT * FROM root r WHERE r.id = \"_metadata\"';\r\n    var accept = collection.queryDocuments(collection.getSelfLink(), filterQuery,\r\n      updateMetadataCallback);\r\n    if(!accept) throw \"Unable to update metadata, abort\";\r\n\r\n    function updateMetadataCallback(err, documents, responseOptions) {\r\n      if(err) throw new Error(\"Error\" + err.message);\r\n           if(documents.length != 1) throw 'Unable to find metadata document';\r\n           var metadataDocument = documents[0];\r\n\r\n           // update metadata\r\n           metadataDocument.createdDocuments += 1;\r\n           metadataDocument.createdNames += \" \" + createdDocument.id;\r\n           var accept = collection.replaceDocument(metadataDocument._self,\r\n               metadataDocument, function(err, docReplaced) {\r\n                  if(err) throw \"Unable to update metadata, abort\";\r\n               });\r\n           if(!accept) throw \"Unable to update metadata, abort\";\r\n           return;          \r\n    }",  
    "id": "PostTrigger-UpdateMetaAll",  
    "triggerOperation": "All",  
    "triggerType": "Post",  
    "_rid": "Sl8fALN4sw4BAAAAAAAAcA==",  
    "_ts": 1449689248,  
    "_self": "dbs\/Sl8fAA==\/colls\/Sl8fALN4sw4=\/triggers\/Sl8fALN4sw4BAAAAAAAAcA==\/",  
    "_etag": "\"0600fbe4-0000-0000-0000-566880a00000\""  
}

示例

POST https://contosomarketing.documents.azure.com/dbs/volcanodb/colls/volcano1/triggers HTTP/1.1  
x-ms-session-token: 41  
x-ms-date: Wed, 09 Dec 2015 19:27:28 GMT  
authorization: type%3dmaster%26ver%3d1.0%26sig%3dHmx5WSnyLdbJnDB1Ixme8uGbUSl%2f96HkCgSsSnsSq%2fI%3d  
Cache-Control: no-cache  
User-Agent: contoso/1.0  
x-ms-version: 2015-08-06  
Accept: application/json  
Host: contosomarketing.documents.azure.com  
Cookie: x-ms-session-token=41  
Content-Length: 1380  
Expect: 100-continue  
Connection: Keep-Alive  
  
{  
    "body": "function updateMetadata() {\r\n    var context = getContext();\r\n    var collection = context.getCollection();\r\n    var response = context.getResponse();\r\n    var createdDocument = response.getBody();\r\n\r\n    // query for metadata document\r\n    var filterQuery = 'SELECT * FROM root r WHERE r.id = \"_metadata\"';\r\n    var accept = collection.queryDocuments(collection.getSelfLink(), filterQuery,\r\n      updateMetadataCallback);\r\n    if(!accept) throw \"Unable to update metadata, abort\";\r\n\r\n    function updateMetadataCallback(err, documents, responseOptions) {\r\n      if(err) throw new Error(\"Error\" + err.message);\r\n           if(documents.length != 1) throw 'Unable to find metadata document';\r\n           var metadataDocument = documents[0];\r\n\r\n           // update metadata\r\n           metadataDocument.createdDocuments += 1;\r\n           metadataDocument.createdNames += \" \" + createdDocument.id;\r\n           var accept = collection.replaceDocument(metadataDocument._self,\r\n               metadataDocument, function(err, docReplaced) {\r\n                  if(err) throw \"Unable to update metadata, abort\";\r\n               });\r\n           if(!accept) throw \"Unable to update metadata, abort\";\r\n           return;          \r\n    }",  
    "id": "PostTrigger-UpdateMetaAll",  
    "triggerOperation": "All",  
    "triggerType": "Post"  
}

HTTP/1.1 201 Created  
Cache-Control: no-store, no-cache  
Pragma: no-cache  
Content-Type: application/json  
Server: Microsoft-HTTPAPI/2.0  
Strict-Transport-Security: max-age=31536000  
x-ms-last-state-change-utc: Sun, 29 Nov 2015 19:20:18.154 GMT  
etag: "0600fbe4-0000-0000-0000-566880a00000"  
x-ms-resource-quota: triggers=25;  
x-ms-resource-usage: triggers=1;  
x-ms-schemaversion: 1.1  
x-ms-alt-content-path: dbs/volcanodb/colls/volcano1  
x-ms-content-path: Sl8fALN4sw4=  
x-ms-quorum-acked-lsn: 41  
x-ms-session-token: 42  
x-ms-current-write-quorum: 3  
x-ms-current-replica-set-size: 4  
x-ms-request-charge: 6.29  
x-ms-serviceversion: version=1.5.57.3  
x-ms-activity-id: b407dfec-b6ec-4aa5-9833-eadad231fcd4  
x-ms-gatewayversion: version=1.5.57.3  
Date: Wed, 09 Dec 2015 19:27:29 GMT  
Content-Length: 1565  
  
{  
    "body": "function updateMetadata() {\r\n    var context = getContext();\r\n    var collection = context.getCollection();\r\n    var response = context.getResponse();\r\n    var createdDocument = response.getBody();\r\n\r\n    // query for metadata document\r\n    var filterQuery = 'SELECT * FROM root r WHERE r.id = \"_metadata\"';\r\n    var accept = collection.queryDocuments(collection.getSelfLink(), filterQuery,\r\n      updateMetadataCallback);\r\n    if(!accept) throw \"Unable to update metadata, abort\";\r\n\r\n    function updateMetadataCallback(err, documents, responseOptions) {\r\n      if(err) throw new Error(\"Error\" + err.message);\r\n           if(documents.length != 1) throw 'Unable to find metadata document';\r\n           var metadataDocument = documents[0];\r\n\r\n           // update metadata\r\n           metadataDocument.createdDocuments += 1;\r\n           metadataDocument.createdNames += \" \" + createdDocument.id;\r\n           var accept = collection.replaceDocument(metadataDocument._self,\r\n               metadataDocument, function(err, docReplaced) {\r\n                  if(err) throw \"Unable to update metadata, abort\";\r\n               });\r\n           if(!accept) throw \"Unable to update metadata, abort\";\r\n           return;          \r\n    }",  
    "id": "PostTrigger-UpdateMetaAll",  
    "triggerOperation": "All",  
    "triggerType": "Post",  
    "_rid": "Sl8fALN4sw4BAAAAAAAAcA==",  
    "_ts": 1449689248,  
    "_self": "dbs\/Sl8fAA==\/colls\/Sl8fALN4sw4=\/triggers\/Sl8fALN4sw4BAAAAAAAAcA==\/",  
    "_etag": "\"0600fbe4-0000-0000-0000-566880a00000\""  
}

创建触发器

请求

标头

正文

响应

标头

状态代码

正文

示例

另请参阅

其他资源