AWS Lambda执行环境中预装了哪些NPM模块?

问题描述 投票:3回答:2

最近我发现在AWS Lambda nodejs8.10中预装了aws-sdk NPM模块。我在互联网上找不到任何关于它的信息。

AWS Lambda中预安装了哪些其他node.js模块?

javascript node.js npm aws-lambda aws-sdk
2个回答
0
投票

我找不到正式列表,所以我编写了一个脚本来创建列表。目前这些是(不包括内置的nodejs模块,当然也可以使用):

'awslambda',
'aws-sdk',
'base64-js',
'dynamodb-doc',
'ieee754',
'imagemagick',
'isarray',
'jmespath',
'lodash',
'sax',
'uuid',
'xml2js',
'xmlbuilder'

生成此列表的代码:

function flatten(arrayOfArrays) {
    return Array.prototype.concat.apply([], arrayOfArrays)
}

function onlyUnique(value, index, self) {
    return self.indexOf(value) === index;
}

function extPackageNames(node) {
    if (!node.children) return [];
    const arrayOfArrays = node.children.map(c => [c.name].concat(extPackageNames(c)))
    const result = flatten(arrayOfArrays)
    return result
}

exports.handler = async (event) => {
    const rpt = require("read-package-tree")
    const module = require("module")

    const pathArg = process.env.NODE_PATH
    const allPaths = pathArg.split(":")

    // '/var/task' is this package on lambda
    const externalPaths = allPaths.filter(p => p !== "/var/task")

    // read all package data
    const ps = externalPaths.map((path) => rpt(path).catch(err => err))
    const rpts = await Promise.all(ps).catch(err => err)

    // extract the information we need
    const packagesPerPath = rpts.map(extPackageNames)
    const countPerPath = packagesPerPath.map(arr => arr.length)
    const packages = flatten(packagesPerPath)

    // remove duplicates
    const uniquePackages = packages.filter(onlyUnique)

    // remove node.js built-in modules
    const uniqueCustomPackages = uniquePackages.filter(p => !module.builtinModules.includes(p))

    const result = {
        node_path: pathArg,
        paths: externalPaths.map((e, i) => [e, countPerPath[i]]),
        uniqueCustomPackages
    }

    console.log(result)

    const response = {
        statusCode: 200,
        body: JSON.stringify(result)
    };
    return response;
};

要在lambda上运行它,您需要将其与包含node_modulesread-package-tree文件夹一起压缩。

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