envoy-proxy.yaml

admin:
  access_log_path: /tmp/admin_access.log
  address:
    socket_address: { address: 0.0.0.0, port_value: 9901 }

static_resources:
  listeners:
    - name: service-entity-http-listeners
      address:
        socket_address: { address: 0.0.0.0, port_value: 51051 }
      filter_chains:
        - filters:
            - name: envoy.filters.network.http_connection_manager
              typed_config:
                "@type": type.googleapis.com/envoy.config.filter.network.http_connection_manager.v2.HttpConnectionManager
                stat_prefix: grpc_json
                codec_type: AUTO
                route_config:
                  name: local_route
                  virtual_hosts:
                    - name: local_service
                      domains: ["*"]
                      cors:
                        allow_origin_string_match:
                          - safe_regex:
                              google_re2: {}
                              regex: \*
                        allow_methods: "GET, POST, PUT, DELETE"
                        filter_enabled:
                          default_value:
                            numerator: 100
                            denominator: HUNDRED
                          runtime_key: cors.www.enabled
                        shadow_enabled:
                          default_value:
                            numerator: 0
                            denominator: HUNDRED
                          runtime_key: cors.www.shadow_enabled
                      routes:
                        - match: { prefix: "/entity.EntityService", grpc: {} }
                          route: { cluster: grpc-backend-services, timeout: { seconds: 60 } }
                http_filters:
                  - name: envoy.filters.http.grpc_json_transcoder
                    config:
                      proto_descriptor: "/data/proto.pb"
                      services: ["entity.EntityService"]
                      print_options:
                        add_whitespace: true
                        always_print_primitive_fields: true
                        always_print_enums_as_ints: false
                        preserve_proto_field_names: true
                  - name: envoy.filters.http.cors
                  - name: envoy.filters.http.router

  clusters:
    - name: grpc-backend-services
      connect_timeout: 1.25s
      type: logical_dns
      lb_policy: round_robin
      http2_protocol_options: {}
      hosts:
        - socket_address:
            address: grpc_app
            port_value: 50051