html-pdf软件包不适用于aws lambda。

Question

我已经尝试在我的代码中实现 html-pdf 包，它部署在AWS 上，但是即使在lambda部署了layer for html-pdf包之后，它也会出现错误。下面是我的代码：

import pdf from 'html-pdf';
import AWS from 'aws-sdk';

var S3 = new AWS.S3();
process.env.PATH = `${process.env.PATH}:/opt`;
process.env.FONTCONFIG_PATH = "/opt";
process.env.LD_LIBRARY_PATH = "/opt";

export const convertToPDFandUpload = async (attachmentFile, empCertificate) => {
    let file;
    let params;
    var options = {
        height: "590px",
        width: "800px",
        phantomPath: '/opt/phantomjs_linux-x86_64'
    };

    return new Promise((resolve, reject) => {
        pdf.create(attachmentFile, options).toBuffer(function (err, res) {
            if (err)
                console.log(err);
            file = res;
            params = {
                Bucket: <my_bucket_name>,
                Key: `certificate/${empCertificate.candidateName}${empCertificate.certificateID}.pdf`,
                Body: file,
                ACL: 'public-read'
            };
            S3.upload(params, async function (err, data) {
                if (err) {
                    console.log(err, err.stack);
                    reject(null);
                } else {
                    resolve(data.Location);
                }
            });
        });
    });
};

它在toBuffer()函数之后抛出一个错误。

错误：{ "errorType"："TypeError"，"errorMessage"：“无法读取未定义的属性‘文件名’”，“堆栈”："TypeError:无法读取未定义的属性‘文件名’“，”at execPdfToBuffer Onboarding/onboarding BE/hronboardingcodebase/services/certification/node_modules/html-pdf/lib/pdf.js:48:1)"，““at (/var/task/apis/webpack:/home/nikhilsrivastva/Desktop/HR BE/hronboardingcodebase/services/certification/node_modules/html-pdf/lib/pdf.js:144:1)"，/onboarding BE/hronboardingcodebase/services/certification/node_modules/html-pdf/lib/pdf.js:144:1)”，at ChildProcess.emit (events.js:314:20)“、”at ChildProcess.EventEmitter.emit (domain.js:483:12)“、”at Process.ChildProcess._handle.onexit (internal/child_process.js:276:12)“}

Answer 1

图层压缩文件必须包含一个名为"nodejs“的文件夹，该文件夹必须包含具有您的依赖项的"node_modules”文件夹。在这里查看确切的结构：https://docs.aws.amazon.com/lambda/latest/dg/configuration-layers.html#configuration-layers-path

AWS用于

的Node.js示例文件结构

xray-sdk.zip └ nodejs/node\_modules/aws-xray-sdk

因此，您可以验证您的层压缩文件是否具有正确的结构。