我在s3(公共)上有一些证书文件,我将在我的代码中下载并使用这些文件,如果我在本地的nodejs中编写一个等效代码,它运行正常,但在AWS lambda中它只是崩溃了
var apn = require('apn');
var https = require('https');
var fs = require('fs');
exports.handler = function(event, context) {
console.log("Running aws apn push message function");
console.log("==================================");
console.log("event", event);
var certPath = event.certPath;
var keyPath = event.keyPath;
var certFileName = event.certFileName;
var keyFileName = event.keyFileName;
var passphrase = event.passphrase;
var apnId = event.apnId;
var content = event.content;
var certfile = fs.createWriteStream(certFileName);
var certrequest = https.get(certPath, function(certresponse) {
certresponse.pipe(certfile);
console.log("downloaded the certificate");
var keyfile = fs.createWriteStream(keyFileName);
var keyrequest = https.get(keyPath, function(keyresponse) {
keyresponse.pipe(keyfile);
console.log("downloaded the key file");
var options = {
"cert":certFileName,
"key":keyFileName,
"passphrase":passphrase,
"batchFeedback": true,
"interval": 10
};
var apnConnection = new apn.Connection(options);
var myDevice = new apn.Device(apnId);
var note = new apn.Notification();
note.expiry = Math.floor(Date.now() / 1000) + 3600; // Expires 1 hour from now.
note.payload = {'COMMAND': content};
apnConnection.pushNotification(note, myDevice);
console.log('message sent to ' + apnId);
context.done();
});
});
}
我得到的错误与我想的访问文件有关 -
events.js:72
throw er; // Unhandled 'error' event
^
Error: EACCES, open 'PushChatCert.pem'
因此,在AWS Lambda上有一些特定问题,当一个人下载文件并使用它时,与其路径或其他内容有关,文件在下载时保留在哪里,实际上我甚至看不到下载文件的日志。
答案 0 :(得分:37)
您可以在Lambda中写入的唯一可用本地文件系统是/ tmp,因此请确保您尝试写入的本地文件的路径位于/ tmp目录中,并且应该全部设置。
答案 1 :(得分:1)
请注意,截至去年(2020 年)Lambda 也支持 EFS 作为挂载,因此您可以写入 EFS 挂载点。对你的情况来说太过分了……但它可能对处理大文件的人有帮助https://aws.amazon.com/blogs/compute/using-amazon-efs-for-aws-lambda-in-your-serverless-applications/