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How to use create_metric_handler_item method in localstack

Best Python code snippet using localstack_python

metric_handler.py

Source:metric_handler.py

...99class MetricHandler:100    metric_data: List[Metric] = []101    def __init__(self) -> None:102        self.metrics_handler_items = {}103    def create_metric_handler_item(104        self, chain: HandlerChain, context: RequestContext, response: Response105    ):106        if not config.is_collect_metrics_mode():107            return108        item = MetricHandlerItem(context)109        self.metrics_handler_items[context] = item110    def _get_metric_handler_item_for_context(self, context: RequestContext) -> MetricHandlerItem:111        return self.metrics_handler_items[context]112    def record_parsed_request(113        self, chain: HandlerChain, context: RequestContext, response: Response114    ):115        if not config.is_collect_metrics_mode():116            return117        item = self._get_metric_handler_item_for_context(context)...

app.py

Source:app.py

1from localstack.aws import handlers2from localstack.aws.handlers.metric_handler import MetricHandler3from localstack.aws.handlers.service_plugin import ServiceLoader4from localstack.services.plugins import SERVICE_PLUGINS, ServiceManager, ServicePluginManager5from .gateway import Gateway6from .handlers.fallback import EmptyResponseHandler7from .handlers.service import ServiceRequestRouter8class LocalstackAwsGateway(Gateway):9    def __init__(self, service_manager: ServiceManager = None) -> None:10        super().__init__()11        # basic server components12        self.service_manager = service_manager or ServicePluginManager()13        self.service_request_router = ServiceRequestRouter()14        # lazy-loads services into the router15        load_service = ServiceLoader(self.service_manager, self.service_request_router)16        metric_collector = MetricHandler()17        # the main request handler chain18        self.request_handlers.extend(19            [20                handlers.push_request_context,21                metric_collector.create_metric_handler_item,22                handlers.parse_service_name,  # enforce_cors and content_decoder depend on the service name23                handlers.enforce_cors,24                handlers.content_decoder,25                handlers.serve_localstack_resources,  # try to serve internal resources in /_localstack first26                handlers.serve_default_listeners,  # legacy proxy default listeners27                handlers.serve_edge_router_rules,28                # start aws handler chain29                handlers.inject_auth_header_if_missing,30                handlers.add_region_from_header,31                handlers.add_account_id,32                handlers.parse_service_request,33                metric_collector.record_parsed_request,34                handlers.serve_custom_service_request_handlers,35                load_service,  # once we have the service request we can make sure we load the service36                self.service_request_router,  # once we know the service is loaded we can route the request37                # if the chain is still running, set an empty response38                EmptyResponseHandler(404, b'{"message": "Not Found"}'),39            ]40        )41        # exception handlers in the chain42        self.exception_handlers.extend(43            [44                handlers.log_exception,45                handlers.handle_service_exception,46                handlers.handle_internal_failure,47            ]48        )49        # response post-processing50        self.response_handlers.extend(51            [52                handlers.parse_service_response,53                handlers.set_close_connection_header,54                handlers.run_custom_response_handlers,55                handlers.add_cors_response_headers,56                handlers.log_response,57                handlers.count_service_request,58                handlers.pop_request_context,59                metric_collector.update_metric_collection,60            ]61        )62def main():63    """64    Serve the LocalstackGateway with the default configuration directly through hypercorn. This is mostly for65    development purposes and documentation on how to serve the Gateway.66    """67    from .serving.hypercorn import serve68    use_ssl = True69    port = 456670    # serve the LocalStackAwsGateway in a dev app71    from localstack.utils.bootstrap import setup_logging72    setup_logging()73    if use_ssl:74        from localstack.services.generic_proxy import (75            GenericProxy,76            install_predefined_cert_if_available,77        )78        install_predefined_cert_if_available()79        _, cert_file_name, key_file_name = GenericProxy.create_ssl_cert(serial_number=port)80        ssl_creds = (cert_file_name, key_file_name)81    else:82        ssl_creds = None83    gw = LocalstackAwsGateway(SERVICE_PLUGINS)84    serve(gw, use_reloader=True, port=port, ssl_creds=ssl_creds)85if __name__ == "__main__":...

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