def pkg_version_check()

in skywalking/plugins/__init__.py [0:0]

• 24 lines of code
• 8 McCabe index (conditional complexity)

def pkg_version_check(plugin):
    supported = True

    # no version rules was set, no checks
    if not hasattr(plugin, 'version_rule'):
        return supported

    pkg_name = plugin.version_rule.get('name')
    rules = plugin.version_rule.get('rules')

    try:
        current_pkg_version = pkg_resources.get_distribution(pkg_name).version
    except pkg_resources.DistributionNotFound:
        # when failed to get the version, we consider it as supported.
        return supported

    current_version = version.parse(current_pkg_version)
    # pass one rule in rules (OR)
    for rule in rules:
        if rule.find(' ') == -1:
            if check(rule, current_version):
                return supported
        else:
            # have to pass all rule_uint in this rule (AND)
            rule_units = rule.split(' ')
            results = [check(unit, current_version) for unit in rule_units]
            if False in results:
                # check failed, try to check next rule
                continue
            else:
                return supported

    supported = False
    return supported