建立觸發程序
作業 Create Trigger 會在集合中建立新的觸發程式。
要求
| 方法 | 要求 URI | Description |
|---|---|---|
| POST | https://{databaseaccount}.documents.azure.com/dbs/{db-id}/colls/{coll-id}/triggers |
請注意，{databaseaccount} 是您訂用帳戶下建立的 Azure Cosmos DB 帳戶名稱。 {db-id} 值是建立觸發程式之資料庫的使用者產生名稱/識別碼，而不是系統產生的識別碼 (資料庫) 。 {coll-id} 值是建立觸發程式之集合的名稱。 |
標題
如需所有 Azure Cosmos DB 要求所使用的標頭，請參閱常見的 Azure Cosmos DB REST 要求標頭 。
主體
| 屬性 | 必要 | 類型 | 描述 |
|---|---|---|---|
| id | 必要 | String | 它用來識別觸發程序的唯一名稱。 識別碼不能超過 255 個字元。 |
| body | 必要 | String | 它是觸發程式的主體。 |
| triggerOperation | 必要 | String | 它是叫用觸發程式的作業類型。 可接受的值為： All、 Create、 Replace和 Delete。 |
| triggerType | 必要 | String | 這個值會指定觸發程式引發的時間。 可接受的值為： Pre 和 Post。 在 作業之後 張貼 觸發程式時，預先觸發程式會在作業之前引發。 |
{
"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"
}
回應
標題
如需所有 Azure Cosmos DB 回應所傳回的標頭，請參閱 一般 Azure Cosmos DB REST 回應標頭 。
狀態碼
下表列出此作業所傳回的常見狀態碼。 如需狀態碼的完整清單，請參閱 HTTP 狀態碼。
| HTTP 狀態碼 | Description |
|---|---|
| 201 Created | 作業成功。 |
| 400 不正確的要求 | JSON 內文無效。 檢查是否缺少大括號或引號。 |
| 409 衝突 | 現有觸發程式已採用為新觸發程式提供的識別碼。 |
主體
| 屬性 | Description |
|---|---|
| _擺脫 | 這是系統產生的屬性。 資源識別碼 (_rid) 是資源模型上每個資源堆疊也是階層式的唯一識別碼。 在內部用來放置和導覽觸發程序資源。 |
| _Ts | 這是系統產生的屬性。 代表資源的上次更新時間戳記。 值為時間戳記。 |
| _自我 | 這是系統產生的屬性。 代表資源的唯一可定址 URI。 |
| _Etag | 這是系統產生的屬性，指定開放式平行存取控制所需的資源 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\""
}
範例
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\""
}