envoy.yaml

static_resources:
  listeners:
  - address:
      socket_address:
        address: 0.0.0.0
        port_value: 8811
    filter_chains:
    - filters:
      - name: envoy.filters.network.http_connection_manager
        typed_config:
          "@type": type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager
          codec_type: AUTO
          stat_prefix: grpc_json
          access_log:
          - name: envoy.access_loggers.stdout
            typed_config:
              "@type": type.googleapis.com/envoy.extensions.access_loggers.stream.v3.StdoutAccessLog
          route_config:
            name: local_route
            virtual_hosts:
            - name: backend
              domains:
              - "*"
              routes:
              - match: {prefix: "/hello"}
                route: {cluster: backend_grpc_service, timeout: 60s}
              - match: {prefix: "/product"}
                route: {cluster: backend_grpc_service, timeout: 60s}
              - match: {prefix: "/products"}
                route: {cluster: backend_grpc_service, timeout: 60s}
              - match:
                  prefix: "/"
                  grpc: {}
                route:
                  cluster: backend_grpc_service
          http_filters:
          - name: envoy.filters.http.grpc_json_transcoder
            typed_config:
              "@type": type.googleapis.com/envoy.extensions.filters.http.grpc_json_transcoder.v3.GrpcJsonTranscoder
              proto_descriptor: "/proto-path/products.pb"
              services: ["productContracts.ProductService"]
              print_options:
                add_whitespace: true
                always_print_primitive_fields: true
                always_print_enums_as_ints: false
                preserve_proto_field_names: false
          - name: envoy.filters.http.router
            typed_config:
              "@type": type.googleapis.com/envoy.extensions.filters.http.router.v3.Router
  clusters:
  - name: backend_grpc_service
    type: STRICT_DNS
    lb_policy: ROUND_ROBIN
    typed_extension_protocol_options:
      envoy.extensions.upstreams.http.v3.HttpProtocolOptions:
        "@type": type.googleapis.com/envoy.extensions.upstreams.http.v3.HttpProtocolOptions
        explicit_http_config:
          http2_protocol_options: {}
    load_assignment:
      cluster_name: backend_grpc_service
      endpoints:
      - lb_endpoints:
        - endpoint:
            address:
              socket_address:
                address: grpc_api
                port_value: 8080