.. _config_http_filters_grpc_stats: gRPC Statistics =============== * gRPC :ref:`architecture overview ` * :ref:`v3 API reference ` * This filter should be configured with the name *envoy.filters.http.grpc_stats*. * This filter can be enabled to emit a :ref:`filter state object ` * The filter state object textual representation is `request_message_count,response_message_count`. This filter enables telemetry of gRPC calls. It counts the number of successful and failed calls, optionally grouping them by the gRPC method name. Additionally, the filter detects message boundaries in streaming gRPC calls and emits the message counts for both uni-directional and bi-directional calls. See more info on the wire format in `gRPC over HTTP/2 `_. The filter emits statistics in the *cluster..grpc.* namespace. Depending on the configuration, the stats may be prefixed with `..`; the stats in the table below are shown in this form. See the documentation for :ref:`individual_method_stats_allowlist ` and :ref:`stats_for_all_methods `. To enable *upstream_rq_time* (v3 API only) see :ref:`enable_upstream_stats `. .. csv-table:: :header: Name, Type, Description :widths: 1, 1, 2 ..success, Counter, Total successful service/method calls ..failure, Counter, Total failed service/method calls ..total, Counter, Total service/method calls ..request_message_count, Counter, Total request message count for service/method calls ..response_message_count, Counter, Total response message count for service/method calls ..upstream_rq_time, Histogram, Request time milliseconds