HTTPBin - Enable Compression Filter

envoy.yaml

static_resources:
  listeners:
    - name: listener_0
      address:
        socket_address:
          address: 0.0.0.0
          port_value: 10000
      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
                stat_prefix: ingress_http
                http_filters:
                  - name: envoy.filters.http.lua
                    typed_config:
                      "@type": type.googleapis.com/envoy.extensions.filters.http.lua.v3.Lua
                      inline_code: |
                        -- Lua script to check compression header
                        function envoy_on_request(request_handle)
                          -- Get the compression header value
                          local compress_header = request_handle:headers():get("x-compress-request")
                          
                          if compress_header == "true" then
                            -- Enable compression by setting accept-encoding
                            request_handle:headers():add("accept-encoding", "gzip")
                          end
                        end
                  - name: envoy.filters.http.compressor
                    typed_config:
                      "@type": type.googleapis.com/envoy.extensions.filters.http.compressor.v3.Compressor
                      compressor_library:
                        name: gzip
                        typed_config:
                          "@type": type.googleapis.com/envoy.extensions.compression.gzip.compressor.v3.Gzip
                          memory_level: 5
                          window_bits: 12
                          compression_level: 6
                          compression_strategy: DEFAULT_STRATEGY
                      request_direction_config:
                        common_config:
                          enabled:
                            default_value: false
                            runtime_key: request_compression_enabled
                      response_direction_config:
                        remove_accept_encoding_header: true
                        common_config:
                          min_content_length: 50
                          # content_length: 1024
                          content_type:
                            - application/json
                            - text/plain
                  - name: envoy.filters.http.router
                    typed_config:
                      "@type": type.googleapis.com/envoy.extensions.filters.http.router.v3.Router
                route_config:
                  name: local_route
                  virtual_hosts:
                    - name: local_service
                      domains: ["*"]
                      routes:
                        - match:
                            prefix: "/"
                          route:
                            cluster: service_backend
                            timeout: 30s
  clusters:
    - name: service_backend
      connect_timeout: 5s
      type: STRICT_DNS
      lb_policy: ROUND_ROBIN
      load_assignment:
        cluster_name: service_backend
        endpoints:
          - lb_endpoints:
              - endpoint:
                  address:
                    socket_address:
                      address: httpbin.org
                      port_value: 80