BitBucket Firebase Pipeline error

[RobT]

I'm getting a strange error when I get to the deploy step of firebase.

The config (/bitbucket-pipeline.yaml) steps look like this...

image: node:16

pipelines:
  branches:
    dev:
      - step:
        name: Setup
        caches:
          - node
        script:
          - npm install
      - step:
        name: Build
        caches:
          - node
        script:
          - npm run build:dev
        artifacts:
          - build/**
      - step:
        name: Deploy
        caches:
          - node
        deployment: staging
        script:
          - pipe: atlassian/firebase-deploy:1.3.0
            variables:
              PROJECT_ID: $FIREBASE_PROJECT_ID
              KEY_FILE: $FIREBASE_PRIVATE_KEY
              DEBUG: "true"

The (/package.json) file looks something like this (hopefully this is all the relevant parts)...

{
  ...
  "engines": {
    "node": 16
  },
  ...
  "dependencies": {
    ...
    "firebase": "^9.6.1",
    ...
    "react-scripts": "5.0.0",
    ...
  },
  "scripts": {
    ...
    "build:dev": "env-cmd -f .env.development react-scripts build",
    ...
  }
}

The deployment error looks like this...

Status: Downloaded newer image for bitbucketpipelines/firebase-deploy:1.3.0
DEBUG: Starting new HTTPS connection (1): bitbucket.org
DEBUG: https://bitbucket.org:443 "GET /bitbucketpipelines/official-pipes/raw/master/pipes.prod.json HTTP/1.1" 200 None
INFO: Executing the pipe...
INFO: Current NodeJS version:
  installing : node-v12.22.12
       mkdir : /usr/local/n/versions/node/12.22.12
       fetch : https://nodejs.org/dist/v12.22.12/node-v12.22.12-linux-x64.tar.gz
   installed : v12.22.12 (with npm 6.14.16)
Traceback (most recent call last):
  File "/main.py", line 170, in <module>
    pipe.run()
  File "/main.py", line 108, in run
    key_content = base64.b64decode(key_file)
  File "/usr/local/lib/python3.7/base64.py", line 87, in b64decode
    return binascii.a2b_base64(s)
binascii.Error: Incorrect padding

I can't see anything out of the ordinary. Could anyone please point me at what might be wrong?

[o_kyrdan · Accepted solution]

Hi @RobT

Looks like the KEY_FILE encoding error.

The KEY_FILE should be base64 encoded content of Key file for a Google service account. To encode this content, follow encode private key docs.

Linux

$ base64 -w 0 < my_gcp_key

Mac OS X

$ base64 < my_gcp_key

More details about firebase-deploy pipe you could find in the Readme.

Best regards,
Oleksandr Kyrdan

[RobT]

Thank you @o_kyrdan , that was exactly it. I missed the base64 part. Silly mistake.