node.js - 无法在 AWS Lambda 上将 pdf 转换为图像

Question

我有一个 Nodejs 8.10 lambda，它将 pdf 转换为 png，直到几天前它都可以正常工作。这似乎是由于 AWS 更新引起的错误 https://aws.amazon.com/blogs/compute/upcoming-updates-to-the-aws-lambda-execution-environment/

{ 
Error: Command failed: convert -density 200 -quality 75 "/tmp/temp_file.pdf[0]" "/tmp/temp_file-0.png"
convert: unable to load module `/usr/lib64/ImageMagick-6.7.8/modules-Q16/coders/pdf.la': file not found @ error/module.c/OpenModule/1278.
convert: no decode delegate for this image format `/tmp/temp_file.pdf' @ error/constitute.c/ReadImage/544.
convert: no images defined `/tmp/temp_file-0.png' @ error/convert.c/ConvertImageCommand/3046.
}

通过添加将在 7 月 22 日之后停止工作的公共层解决了该错误：arn:aws:lambda:::awslayer:AmazonLinux1703

我尝试为 AWS Lambda 创建 ImageMagick 静态二进制文件。我遵循了 ImageMagic 6.9.10-5 版的这些说明 https://gist.github.com/bensie/56f51bc33d4a55e2fc9a

https://imagemagick.org/download/ImageMagick-6.9.10-55.tar.gz

lambda 的文件夹结构：

我尝试了 png 图像的基本调整大小：

var IM_PATH = "var/task/imagemagick/bin/";
process.env['LD_LIBRARY_PATH'] = 'var/task/imagemagick/lib/';
process.env['PATH'] = process.env['PATH'] + ':' + IM_PATH + ':' + process.env['LD_LIBRARY_PATH'];

var gm = require('gm').subClass({
imageMagick: true,
appPath: 'var/task/imagemagick/bin/',
});

gm('image.png')
.resize(240, 240, '!')
.write('/tmp/resize.png', function (err) {
if (!err) console.log('done');
else {
console.log(err);
}
});

尝试在节点 8.10 和节点 10.x lambdas 上运行，这里出现错误：

1) 节点 8.10

{ Error: Command failed: convert: UnableToOpenConfigureFile `delegates.xml' @ warning/configure.c/GetConfigureOptions/677.
convert: NoDecodeDelegateForThisImageFormat `PNG' @ error/constitute.c/ReadImage/560.
convert: NoImagesDefined `/tmp/resize.png' @ error/convert.c/ConvertImageCommand/3235.

    at ChildProcess.onExit (/var/task/node_modules/gm/lib/command.js:301:17)
    at emitTwo (events.js:126:13)
    at ChildProcess.emit (events.js:214:7)
    at maybeClose (internal/child_process.js:925:16)
    at Socket.stream.socket.on (internal/child_process.js:346:11)
    at emitOne (events.js:116:13)
    at Socket.emit (events.js:211:7)
    at Pipe._handle.close [as _onclose] (net.js:567:12) code: 1, signal: null }

2) 节点 10.x

{ Error: Command failed: var/task/imagemagick/bin/convert: error while loading shared libraries: libgomp.so.1: cannot open shared object file: No such file or directory

    at ChildProcess.onExit (/var/task/node_modules/gm/lib/command.js:301:17)
    at ChildProcess.emit (events.js:189:13)
    at ChildProcess.EventEmitter.emit (domain.js:441:20)
    at maybeClose (internal/child_process.js:970:16)
    at Socket.stream.socket.on (internal/child_process.js:389:11)
    at Socket.emit (events.js:189:13)
    at Socket.EventEmitter.emit (domain.js:441:20)
    at Pipe._handle.close (net.js:597:12) code: 127, signal: null }

标签： node.jsaws-lambdaimagemagickgraphicsmagickpdf-conversion