data collector metadata examples

Lua Filter:

          - name: envoy.filters.http.lua
            typed_config:
              "@type": type.googleapis.com/envoy.extensions.filters.http.lua.v3.Lua
              inline_code: |
                function envoy_on_request(request_handle)
                  metadata = request_handle:streamInfo():dynamicMetadata()
                  metadata:set("envoy.filters.http.apigee.datacapture", "dc_test", "A test string.")
                end

Header to Metadata:

          - name: envoy.filters.http.header_to_metadata
            typed_config:
              "@type": type.googleapis.com/envoy.extensions.filters.http.header_to_metadata.v3.Config
              request_rules:
                - header: "Host"
                  on_header_present:
                    metadata_namespace: envoy.filters.http.apigee.datacapture
                    key: dc_test
                    type: STRING
                  remove: false