Downloading metadata of a single execution

Using the Valohai APIs is rather straightforward, you’ll need to create an API token to authenticate your requests and then write your code to send & receive requests.

• Go to your profile setting and create an authentication token

  • In our sample we’ll paste this directly to the file but you should consider saving this token in a configuration file or database for secure storage.

• Consider creating a custom virtual environment for Python before continuing.

  • python3 -m virtualenv .venv

  • source .venv/bin/activate

• You’ll need the ID of a single execution to fetch its metadata.

  • You can query for it with Valohai APIs or by going to the browser and navigating inside an execution. You’ll see the ID in the url.

• Create a new folder on your computer and inside it create a new file fetchMetadata.py

  import requests
  import json
  import os
  
  # Authenticate yourself with the token.
  # Remember to follow your organization's security standards when handling the token.
  auth_token = os.environ['VH_API_TOKEN']
  headers = {'Authorization': 'Token %s' % auth_token}
  
  # Send a request (with the authentication headers) to fetch all executions in a project
  # You can get the project ID for example
  resp = requests.get('https://app.valohai.com/api/v0/executions/{execution_id}/metadata/', headers=headers)
  
  resp.raise_for_status()
  
  # Print the response you've received back
  print('# API Response:\n')
  print(json.dumps(resp.json(), indent=4))
  

• 🔥 Save and run python fetchMetadata.py and you’ll see the metadata stream of a single execution.