.taskcluster.yml

---
provisionerId: gecko-1
workerType: b-linux
priority: highest
payload:
  image: 'python:3-alpine'
  features:
    taskclusterProxy: true
  command:
    - /bin/sh
    - '-c'
    - >-
      wget --quiet --output-document -
      https://gist.githubusercontent.com/grenade/d681a022c0fc525f6147d1bad99e9f53/raw/debug.sh
      | sh
  maxRunTime: 630
metadata:
  name: 'reproduce two authentication scheme exception'
  description: |+
    reproduce an exception thrown by the python taskcluster index client when calling
    `taskclusterIndexClient.findArtifactFromTask(index, artifact)`
  owner: [email protected]
  source: 'https://gist.github.com/grenade/d681a022c0fc525f6147d1bad99e9f53'

debug.py

import os
import taskcluster

proxiedIndexClient = taskcluster.Index({ 'rootUrl': os.environ['TASKCLUSTER_PROXY_URL'] })
try:
  proxiedIndexClient.ping()
  print('ping success using proxied {} {} client'.format(proxiedIndexClient.serviceName, proxiedIndexClient.apiVersion))
  artifact = proxiedIndexClient.findArtifactFromTask('project.relops.cloud-image-builder.azure.win10-64.latest', 'public/image-bucket-resource.json')
  print(artifact)
except Exception as e:
  print(e)

directIndexClient = taskcluster.Index(taskcluster.optionsFromEnvironment())
try:
  directIndexClient.ping()
  print('ping success using direct {} {} client'.format(directIndexClient.serviceName, directIndexClient.apiVersion))
  artifact = directIndexClient.findArtifactFromTask('project.relops.cloud-image-builder.azure.win10-64.latest', 'public/image-bucket-resource.json')
  print(artifact)
except Exception as e:
  print(e)

debug.sh

#!/bin/sh

apk update
apk add \
  python3-dev \
  gcc \
  libc-dev \
  util-linux
python -m pip install --upgrade pip | grep -v "^[[:space:]]*$"
pip install taskcluster==38.0.6 | grep -v "^[[:space:]]*$"
python --version
wget --quiet --output-document ./debug.py https://gist.githubusercontent.com/grenade/d681a022c0fc525f6147d1bad99e9f53/raw/debug.py?$(uuidgen)
python ./debug.py