node.js：仅安装googleapis所需的模块

Question

我正在使用nodejs发送FCM通知。以下是我的代码，

const errorCodes = require('source/error-codes');
const PropertiesReader = require('properties-reader');
const serviceAccount = require("service-account.json");
const fetch = require('node-fetch');

var {
    google
} = require('googleapis');
var MESSAGING_SCOPE = 'https://www.googleapis.com/auth/firebase.messaging';
var SCOPES = [MESSAGING_SCOPE];

const prop = PropertiesReader('properties.properties');

exports.sendSingleNotification = async (event, context) => {

    var PROJECT_ID = "xxx";

    if (event.body == null && event.body == undefined) {
        var response = errorCodes.missing_parameters;
        return response;
    }


    try {

        let body = JSON.parse(event.body)
        console.log("body", body);

        let promise = new Promise(function(resolve, reject) {
            var key = require("service-account.json");
            var jwtClient = new google.auth.JWT(
                key.client_email,
                null,
                key.private_key,
                SCOPES,
                null
            );
            jwtClient.authorize(function(err, tokens) {
                if (err) {
                    reject(err);
                    return {
                        "error": "error 1"
                    };
                }
                console.log("resolve");
                console.log(tokens);
                resolve(tokens.access_token);
            });
        });

        let accessToken = await promise;
        console.log("access token");
        console.log(accessToken);

        var message = {
            "message": {
                "token": body.fcmToken,
                "notification": {
                    "title": "Portugal vs. Denmark",
                    "body": "great match!"
                }
            }
        };

        const response = await fetch('https://fcm.googleapis.com/v1/projects/' + PROJECT_ID + '/messages:send', {
            method: 'post',
            body: JSON.stringify(message),
            headers: {
                'Content-Type': 'application/json',
                'Authorization': 'Bearer ' + accessToken
            }
        });
        const data = await response.json();

        return {
            "message": data
        }

    } catch (error) {
        console.log(error);
        return {
            "error 2": error
        }
    }


};

代码正常。但是，为了完成这项工作，我已经通过 npm安装googleapis 安装了整个 googleapis npm。这似乎已经下载了我不需要的许多模块，并且增加了我的应用程序的编译时间。它也可能会增加AWS lambda冷启动时间（这是一个lambda应用程序）。

文档说，如果需要减少启动时间，我们可以安装特定的模块（）。

我的问题是，查看我的代码，我需要安装的模块是什么而不是整个 googleapis ？

Answer 1

我一个人想知道。我必须安装 Google-Auth-library npm模块。这是代码。

const errorCodes = require('source/error-codes');
const PropertiesReader = require('properties-reader');
const serviceAccount = require("service-account.json");
const fetch = require('node-fetch');

var googleAuth = require('google-auth-library');
var MESSAGING_SCOPE = 'https://www.googleapis.com/auth/firebase.messaging';
var SCOPES = [MESSAGING_SCOPE];

const prop = PropertiesReader('properties.properties');

exports.sendChatNotification = async (event, context) => {

    var PROJECT_ID = "xxx-xxx";

    if (event.body == null && event.body == undefined) {
        var response = errorCodes.missing_parameters;
        return response;
    }

    let body = JSON.parse(event.body)

    // if (body.recieverUid == null ||
    //     body.senderUid == null ||
    //     body.message == null
    // ) {
    //     console.log("fire 1");
    //     var response = errorCodes.not_null_parameters;
    //     return response;
    // }


    try {

        console.log("body", body);

        let promise = new Promise(function(resolve, reject) {
            var key = require("service-account.json");
            // var jwtClient = new google.auth.JWT(
            //     key.client_email,
            //     null,
            //     key.private_key,
            //     SCOPES,
            //     null
            // );
            var jwtClient = new googleAuth.JWT(
                key.client_email,
                null,
                key.private_key,
                SCOPES,
                null
              );
            jwtClient.authorize(function(err, tokens) {
                if (err) {
                    reject(err);
                    return {
                        "error": "error 1"
                    };
                }
                console.log("resolve");
                console.log(tokens);
                resolve(tokens.access_token);
            });
        });

        let accessToken = await promise;
        console.log("access token");
        console.log(accessToken);

        var message = {
            "message": {
                "token": body.fcmToken,
                "notification": {
                    "title": "Portugal vs. Denmark",
                    "body": "great match!"
                }
            }
        };

        const response = await fetch('https://fcm.googleapis.com/v1/projects/' + PROJECT_ID + '/messages:send', {
            method: 'post',
            body: JSON.stringify(message),
            headers: {
                'Content-Type': 'application/json',
                'Authorization': 'Bearer ' + accessToken
            }
        });
        const data = await response.json();

        return {
            "message": data
        }

    } catch (error) {
        console.log(error);
        return {
            "error 2": error
        }
    }


};