{GCP Cloud Functions}Node.js で HTTP Cloud Functions の関数を作成してデプロイする

-- 1. 前作業

gcloud init
gcloud auth list

gcloud --version

gcloud projects create project01-9999999 \
--name="project01"

gcloud config list
gcloud config set project project01-9999999
gcloud config set compute/region asia-northeast1 --quiet
gcloud config set compute/zone asia-northeast1-a --quiet

gcloud beta billing accounts list
gcloud beta billing projects link project01-9999999 --billing-account=111111-111111-111111

gcloud services enable compute.googleapis.com --project project01-9999999

gcloud components update

コンソールから下記APIを有効にする
Cloud Functions API
Cloud Build API

有効にせずにデプロイするとエラーとともに有効化するURLが案内される

-- 2. Node.js 開発環境のセットアップ

-- 2.1 NVM のインストール

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.2/install.sh | bash

-- 2.2 Node.js と npm（Node Package Manager）のインストール

export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh" # This loads nvm
[ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion" # This loads nvm bash_completion

nvm install stable
nvm alias default stable
node -v

-- 2.3 Node.js 用 Google Cloud クライアントライブラリのインストール

npm install --save @google-cloud/storage

-- 3. 関数の作成

rm -rf ~/helloworld
mkdir ~/helloworld
cd ~/helloworld

vim index.js

const functions = require('@google-cloud/functions-framework');
const escapeHtml = require('escape-html');

/**
* Responds to an HTTP request using data from the request body parsed according
* to the "content-type" header.
*
* @param {Object} req Cloud Function request context.
* @param {Object} res Cloud Function response context.
*/
functions.http('func01', (req, res) => {
res.send(`Hello ${escapeHtml(req.query.name || req.body.name || 'World')}!`);
});

-- 4. 依存関係の指定

vim package.json

{
"name": "nodejs-docs-samples-functions-hello-world",
"version": "0.0.1",
"private": true,
"license": "Apache-2.0",
"author": "Google Inc.",
"repository": {
"type": "git",
"url": "https://github.com/GoogleCloudPlatform/nodejs-docs-samples.git"
},
"engines": {
"node": ">=12.0.0"
},
"dependencies": {
"@google-cloud/debug-agent": "^7.0.0",
"@google-cloud/functions-framework": "^3.1.0",
"escape-html": "^1.0.3"
},
"devDependencies": {
"@google-cloud/pubsub": "^3.0.0",
"@google-cloud/storage": "^6.0.0",
"gaxios": "^4.3.2",
"mocha": "^9.0.0",
"moment": "^2.24.0",
"promise-retry": "^2.0.0",
"sinon": "^14.0.0",
"supertest": "^6.0.0",
"uuid": "^8.0.0",
"wait-port": "^0.3.0"
}
}

-- 5. 関数のデプロイ

gcloud functions runtimes list \
--region=asia-northeast1

gcloud functions deploy func01 \
--runtime nodejs16 \
--trigger-http \
--allow-unauthenticated \
--region=asia-northeast1 \
--memory=128MB \
--timeout 30s \
--max-instances 1

gcloud functions list

-- 6. 関数のテスト

gcloud functions describe func01 \
--region=asia-northeast1

curl https://asia-northeast1-project01-9999999.cloudfunctions.net/func01

curl https://asia-northeast1-project01-9999999.cloudfunctions.net/func01?name=test

-- 7. ログの表示

gcloud functions logs read func01 \
--region=asia-northeast1

-- 8. クリーンアップ

gcloud projects list

gcloud projects delete project01-9999999