如何在不使用终端的 Google App Engine 中获取 locationId

Question

要在 Python 中使用 scheduler_v1.CloudSchedulerClient().location_path()，我需要具有 projectId 和 LocationId 的父项。我知道如何在代码中获取 projectId 并从终端获取 locationId，但如何在我的代码中获取？

我试过查看这个网站(https://cloud.google.com/functions/docs/reference/rpc/google.cloud.location)，但是没有例子，不知道怎么办

from google.cloud import scheduler_v1


from google.oauth2 import service_account

credentials = service_account.Credentials.from_service_account_file('/home/myname/folder/service_account.json')
service = googleapiclient.discovery.build('cloudresourcemanager', 'v1', credentials = credentials)
request = service.projects().list()
response = request.execute()
client = scheduler_v1.CloudSchedulerClient()

for project in response['projects']:
    parent = client.location_path(project['projectId'], ['LocationID'])
    for element in client.list_jobs(parent):
        print(element)

谢谢！

Answer 1

在Google App Engine 中，有一些环境变量是由运行时环境设置的。您可以通过 os.environ.get(environment_name).

获取

https://cloud.google.com/appengine/docs/standard/python3/runtime#environment_variables

Answer 2

不需要使用cloudresourcemanager获取项目ID，而是可以使用App Engine环境变量GOOGLE_CLOUD_PROJECT

您可以使用 App engine admin API 获取位置 ID，请检查此代码段。

    credentials = GoogleCredentials.get_application_default()
    #start discovery service and use appengine admin API
    service = discovery.build('appengine', 'v1', credentials=credentials, cache_discovery=False)

    #disable cache for app engine std (avoid noise in logs)
    logging.getLogger('googleapiclient.discovery_cache').setLevel(logging.ERROR)

    #take the project ID form the environment variables
    project = os.environ['GOOGLE_CLOUD_PROJECT']

    #get App engine application details
    req = service.apps().get(appsId=project)

    response =req.execute()

    #this is the application location id
    location_id = (response["locationId"])

Answer 3

我最近开始使用 http://metadata.google.internal/computeMetadata/v1/instance/region 端点。虽然它在 App Engine 中工作，但现在没有明确记录（但它记录在 Cloud 运行：https://cloud.google.com/run/docs/reference/container-contract）。

该端点的结果将如下所示：

projects/12345678901234/regions/us-central1

很明显，区域是最后一部分(us-central1)。

这是我在 Go 中的示例（记得将 Metadata-Flavor header 设置为 Google）：

var region string
{
    domain := "http://metadata.google.internal"
    path := "computeMetadata/v1/instance/region"

    request, err := http.NewRequest(http.MethodGet, domain+"/"+path, nil)
    if err != nil {
        logrus.Errorf("Could not create request: %v", err)
        panic(err)
    }
    request.Header.Set("Metadata-Flavor", "Google")
    response, err := http.DefaultClient.Do(request)
    if err != nil {
        logrus.Errorf("Could not perform request: %v", err)
        panic(err)
    }
    contents, err := ioutil.ReadAll(response.Body)
    if err != nil {
        logrus.Errorf("Could not read contents: %v", err)
        panic(err)
    }
    originalRegion := string(contents)
    logrus.Infof("Contents of %q: %s", path, originalRegion)
    parts := strings.Split(originalRegion, "/")
    if len(parts) > 0 {
        region = parts[len(parts)-1]
    }
}
logrus.Infof("Region: %s", region)

如何在不使用终端的 Google App Engine 中获取 locationId

how to get locationId in Google App Engine not using terminal

python

google-app-engine

location