在云功能中引用PEM文件

Question

I am trying to convert a firebase-queue worker to send push notification to a cloud function. I am using node-apn to send push notification to iOS devices. It requires setting up a connection which requires me to specify a key.pem file and cert.pem file. These files are present at the same location where the worker js file is present and works without any problem. I moved over the code to a cloud function but I get this error in the Logs console

{ Error: ENOENT: no such file or directory, open './cert.pem'
    at Error (native)
  errno: -2,
  code: 'ENOENT',
  syscall: 'open',
  path: './cert.pem' } 'Unable to send push notification to iOS device. Socket Error'

Below is how the files are specified and the connection is created in the code

var connectionOptions = {
  cert:'./cert.pem',
  key:'./key.pem',
  production: true
};

var apnConnection = new apn.Connection(connectionOptions);

I have tried specifying the cert file as ./cert.pem and cert.pem but I get a similar error in both the cases. I guess the problem is that the .pem files are not shipped along with the functions.

How can I specify such files in a cloud function?

Answer 1

Your path reference isn't quite right for firebase functions.

It should be:

var connectionOptions = {
  cert:__dirname + '/cert.pem',
  key:__dirname + '/key.pem',
  production: true
};