Auth0のログをリアルタイムでエクスポートできるようになったぞー

import { Logging } from '@google-cloud/logging';

interface firebaseEnvConfig {
  databaseURL: string;
  storageBucket: string;
  projectId: string;
}

const firebaseConfigRaw = process.env.FIREBASE_CONFIG as string;
const firebaseConfig: firebaseEnvConfig = JSON.parse(firebaseConfigRaw);

const logToStackDriverLogging = async (payload: any) => {
  const logging = new Logging({
    projectId: firebaseConfig.gcloudProject,
  });

  // NOTE: この辺はお好みで
  const log = logging.log('auth0');
  const metadata = {
    resource: {
      type: 'global',
    },
  };
  const entry = log.entry(metadata, payload);
  await log.write(entry);
};

export default logToStackDriverLogging;

import * as functions from 'firebase-functions';
import * as express from 'express';
import * as bodyParser from 'body-parser';
import logToStackdriverLogging from '../utils/logToStackDriverLogging';

const app = express();
app.use(bodyParser.json());

app.post('/auth0', async (req, res) => {
  res.setHeader('Content-Type', 'text/plain');

  const authorization = req.get('Authorization');
  if (!authorization) {
    console.error('No authorization header');
    res.status(400).json({ success: false });
    return;
  }

  // NOTE: ここはよしなに。
  if (authorization !== functions.config().auth0.token) {
    console.error('Authorization Token missmatch');
    res.status(401).json({ success: false });
  }

  const { body } = req;
  await logToStackdriverLogging(JSON.stringify(body));

  res.status(201).json({ success: true });
});

export const logStream = functions.https.onRequest(app);