def validate_extension_bundles()

in azure/durable_functions/__init__.py [0:0]

• 23 lines of code
• 4 McCabe index (conditional complexity)

def validate_extension_bundles():
    """Raise a warning if host.json contains bundle-range V1.

    Effects
    ------
        Warning: Warning prompting the user to update to bundles V2
    """
    # No need to validate if we're running tests
    if "pytest" in sys.modules:
        return

    host_path = "host.json"
    bundles_key = "extensionBundle"
    version_key = "version"
    host_file = Path(host_path)

    if not host_file.exists():
        # If it doesn't exist, we ignore it
        return

    with open(host_path) as f:
        host_settings = json.loads(f.read())
        try:
            version_range = host_settings[bundles_key][version_key]
        except Exception:
            # If bundle info is not available, we ignore it.
            # For example: it's possible the user is using a manual extension install
            return
        # We do a best-effort attempt to detect bundles V1
        # This is the string hard-coded into the bundles V1 template in VSCode
        if version_range == "[1.*, 2.0.0)":
            message = "Your application is currently configured to use Extension Bundles V1."\
                " Durable Functions for Python works best with Bundles V2,"\
                " which provides additional features like Durable Entities, better performance,"\
                " and is actively being developed."\
                " Please update to Bundles V2 in your `host.json`."\
                " You can set extensionBundles version to be: [2.*, 3.0.0)"
            warnings.warn(message)