您可以使用 Google Cloud CLI,或向 Eventarc Publishing REST API 發出要求,以支援的格式將 CloudEvents 事件直接發布至 Eventarc Advanced 匯流排。您也可以使用Eventarc 用戶端程式庫,透過支援的語言存取 Eventarc API。
事前準備
開始之前,請確認您已完成下列步驟:
- Sign in to your Google Cloud account. If you're new to Google Cloud, create an account to evaluate how our products perform in real-world scenarios. New customers also get $300 in free credits to run, test, and deploy workloads.
-
Install the Google Cloud CLI.
-
If you're using an external identity provider (IdP), you must first sign in to the gcloud CLI with your federated identity.
-
To initialize the gcloud CLI, run the following command:
gcloud init -
Create or select a Google Cloud project.
Roles required to select or create a project
- Select a project: Selecting a project doesn't require a specific IAM role—you can select any project that you've been granted a role on.
-
Create a project: To create a project, you need the Project Creator role
(
roles/resourcemanager.projectCreator), which contains theresourcemanager.projects.createpermission. Learn how to grant roles.
-
Create a Google Cloud project:
gcloud projects create PROJECT_ID
Replace
PROJECT_IDwith a name for the Google Cloud project you are creating. -
Select the Google Cloud project that you created:
gcloud config set project PROJECT_ID
Replace
PROJECT_IDwith your Google Cloud project name.
-
Verify that billing is enabled for your Google Cloud project.
-
Enable the Eventarc and Eventarc Publishing APIs:
Roles required to enable APIs
To enable APIs, you need the Service Usage Admin IAM role (
roles/serviceusage.serviceUsageAdmin), which contains theserviceusage.services.enablepermission. Learn how to grant roles.gcloud services enable eventarc.googleapis.com
eventarcpublishing.googleapis.com -
Install the Google Cloud CLI.
-
If you're using an external identity provider (IdP), you must first sign in to the gcloud CLI with your federated identity.
-
To initialize the gcloud CLI, run the following command:
gcloud init -
Create or select a Google Cloud project.
Roles required to select or create a project
- Select a project: Selecting a project doesn't require a specific IAM role—you can select any project that you've been granted a role on.
-
Create a project: To create a project, you need the Project Creator role
(
roles/resourcemanager.projectCreator), which contains theresourcemanager.projects.createpermission. Learn how to grant roles.
-
Create a Google Cloud project:
gcloud projects create PROJECT_ID
Replace
PROJECT_IDwith a name for the Google Cloud project you are creating. -
Select the Google Cloud project that you created:
gcloud config set project PROJECT_ID
Replace
PROJECT_IDwith your Google Cloud project name.
-
Verify that billing is enabled for your Google Cloud project.
-
Enable the Eventarc and Eventarc Publishing APIs:
Roles required to enable APIs
To enable APIs, you need the Service Usage Admin IAM role (
roles/serviceusage.serviceUsageAdmin), which contains theserviceusage.services.enablepermission. Learn how to grant roles.gcloud services enable eventarc.googleapis.com
eventarcpublishing.googleapis.com 開啟終端機。
您可以使用
gcloud eventarc message-buses publish指令,將事件發布至匯流排。例如:或:gcloud eventarc message-buses publish BUS_NAME \ --avro-message=AVRO_MESSAGE
或:gcloud eventarc message-buses publish BUS_NAME \ --json-message=JSON_MESSAGE
gcloud eventarc message-buses publish BUS_NAME \ --event-data=DATA_PAYLOAD \ --event-id=EVENT_ID \ --event-source=EVENT_SOURCE \ --event-type=EVENT_TYPE \ --event-attributes=EVENT_ATTRIBUTE
更改下列內容:
BUS_NAME:要發布事件的匯流排 ID 或完整 ID。
您只能使用下列其中一種方法:
如果使用
--event-data旗標,也必須使用下列項目:EVENT_ID:事件 ID。事件產生者必須確保每個不同的事件都有不重複的source+id。EVENT_SOURCE:已發布事件的事件來源。EVENT_TYPE:與原始事件相關的事件類型。
使用
--event-data標記時,您可以視需要使用下列項目:EVENT_ATTRIBUTE:已發布事件的屬性。 如要新增更多屬性,可以重複使用--event-attributes標記。請注意,事件可能包含任意數量的其他自訂 CloudEvents 屬性,且名稱各不相同 (也稱為擴充屬性)。
- 匯流排的完整資源名稱,格式為
projects/PROJECT_ID/locations/LOCATION/messageBuses/BUS_NAME更改下列內容:
PROJECT_ID:公車專案的 Google Cloud 專案 ID。LOCATION:部署匯流排的區域,例如us-central1。BUS_NAME:要發布事件的匯流排名稱。
SPEC_VERSION:事件使用的 CloudEvents 規格版本,例如1.0。EVENT_TYPE:與原始事件相關的事件類型。EVENT_SOURCE:已發布事件的事件來源。EVENT_ID:事件 ID。 製作者必須確保每個不同活動的source+id都是不重複的。CONTENT_TYPE(選用):data值的內容類型。如果 JSON 格式的事件沒有datacontenttype屬性,系統會假設資料是符合application/json媒體類型的 JSON 值。DATA_PAYLOAD(選用):事件酬載,已編碼為datacontenttype指定的媒體格式,並遵守dataschema(如有這些屬性)。
直接發布
您直接發布的事件訊息必須符合 CloudEvents 規格。
gcloud
範例:
gcloud eventarc message-buses publish my-bus \ --event-data='{"key": "hello-world-data"}' \ --event-id=hello-world-id-1234 \ --event-source=hello-world-source \ --event-type=hello-world-type \ --event-attributes="datacontenttype=application/json"
gcloud eventarc message-buses publish my-bus --json-message='{ "specversion" : "1.0", "type" :"com.example.someevent", "source" : "google.cloud.storage.object.v1.finalized", "id" : "A234-1234-1234", "time" : "2024-04-05T17:31:00Z", "bucket" : "bucketName", "datacontenttype" : "application/json", "data":{"key": "value"} }'
REST API
如要將事件發布至匯流排,請使用 projects.locations.messageBuses.publish 方法。
使用任何要求資料之前,請先替換以下項目:
JSON 要求主體:
{
"jsonMessage":
"{\"specversion\":\"SPEC_VERSION\",
\"type\":\"EVENT_TYPE\",
\"source\":\"EVENT_SOURCE\",
\"id\":\"EVENT_ID\",
\"datacontenttype\":\"CONTENT_TYPE\",
\"data\":\"DATA_PAYLOAD\"}"
}
請展開以下其中一個選項,以傳送要求:
如果成功,伺服器會傳回 HTTP 200 OK 狀態碼,以及 JSON 格式的空白回應主體:
200 OK
{}