regions.py 文件源码

def _endpoint_for_partition(self, partition, service_name, region_name):
        # Get the service from the partition, or an empty template.
        service_data = partition['services'].get(
            service_name, DEFAULT_SERVICE_DATA)
        # Use the partition endpoint if no region is supplied.
        if region_name is None:
            if 'partitionEndpoint' in service_data:
                region_name = service_data['partitionEndpoint']
            else:
                raise NoRegionError()
        # Attempt to resolve the exact region for this partition.
        if region_name in service_data['endpoints']:
            return self._resolve(
                partition, service_name, service_data, region_name)
        # Check to see if the endpoint provided is valid for the partition.
        if self._region_match(partition, region_name):
            # Use the partition endpoint if set and not regionalized.
            partition_endpoint = service_data.get('partitionEndpoint')
            is_regionalized = service_data.get('isRegionalized', True)
            if partition_endpoint and not is_regionalized:
                LOG.debug('Using partition endpoint for %s, %s: %s',
                          service_name, region_name, partition_endpoint)
                return self._resolve(
                    partition, service_name, service_data, partition_endpoint)
            LOG.debug('Creating a regex based endpoint for %s, %s',
                      service_name, region_name)
            return self._resolve(
                partition, service_name, service_data, region_name)