如何在 GCP 中获得 Method:instance.aggregatedList Compute API 的部分响应

问题描述

我试图通过根据 https://cloud.google.com/resource-manager/docs/performance#partial-response 设置 instances.aggregatedList 请求参数来从 Compute API 方法 fields 获得特定响应

但我收到了 400 BAD REQUEST。

是否有我可以参考的示例以获取聚合方法的部分响应？

解决方法

如果您使用以下 CURL 命令：

curl -H "Authorization: Bearer "$(gcloud auth application-default print-access-token) "https://compute.googleapis.com/compute/v1/projects/[CHANGE-FOR-YOUR-PROJECT-ID]/aggregated/instances?maxResults=1"

您会注意到结果的形式类似于：

{
  "id": "projects/[PROJECT-ID]/aggregated/instances","items": {
    "zones/us-central1-a": {
      "instances": [
        {
          "id": "[INSTANCE-ID]","creationTimestamp": "2020-09-21T06:22:21.604-07:00","name": "instance-1","description": "","tags": {
            "items": [
              "http-server","https-server"
            ],"fingerprint": "XXXXXX"
          },"machineType": "https://www.googleapis.com/compute/v1/projects/[PROJECT-ID]/zones/us-central1-a/machineTypes/e2-medium","status": "RUNNING","zone": "https://www.googleapis.com/compute/v1/projects/[PROJECT-ID]/zones/us-central1-a","canIpForward": false,"networkInterfaces": [
            {
              "network": "https://www.googleapis.com/compute/v1/projects/[PROJECT-ID]/global/networks/default","subnetwork": "https://www.googleapis.com/compute/v1/projects/[PROJECT-ID]/regions/us-central1/subnetworks/[SUBNETWORK_NAME]","networkIP": "10.8.0.13","name": "nic0",... with a lot more fields

如您所见，结果与 response body explained in the documentation 略有不同：

{
  "id": string,"items": [
    {
      "scopeName": string,"instances": [
        {
          "id": string,"creationTimestamp": string,"name": string,"description": string,"tags": {
            "items": [
              string
            ],"fingerprint": string
          },"machineType": string,"status": enum,"statusMessage": string,"zone": string,"canIpForward": boolean,"networkInterfaces": [
            {
              "network": string,"subnetwork": string,"networkIP": string,"ipv6Address": string,.... with a lot more fields

请注意，如果您比较两个结果，您收到的实际响应在 "zones/us-central1-a": 字段之前有一个额外的 instances: 字段，我认为这会导致您遇到的行为。

如果您对使用部分资源感兴趣并且仅在响应中获得某些特定字段，您只需遵守您共享的文档中解释的 syntax rules 并在您的文件中使用 escape characters accordingly查询参数。

例如如果您只对获取项目的 id 以及 instances' name、machineType 和 status 感兴趣，我测试了以下 curl 命令将 Cloud Shell 与我的 GCP 项目一起运行，并且没有问题：

curl -H "Authorization: Bearer "$(gcloud auth application-default print-access-token) "https://compute.googleapis.com/compute/v1/projects/[PROJECT-ID]/aggregated/instances?fields=id,items/zones%2Finstances(name,machineType,status)"

我看到返回了类似于以下内容的内容：

{
  "id": "projects/[PROJECT-ID]/aggregated/instances","items": {
    "zones/us-central1-a": {
      "instances": [
        {
          "name": "instance-1","status": "RUNNING"
        },{
          "name": "instance-2","status": "TERMINATED"
        }
      ]
    }
  }
}