client.rb in google-cloud-trace-v2-1.0.0

- old
+ new

@@ -37,10 +37,13 @@
             # A span is an individual timed event which forms a node of the trace tree.
             # A single trace can contain spans from multiple services.
             #
             class Client
               # @private
+              API_VERSION = ""
+
+              # @private
               DEFAULT_ENDPOINT_TEMPLATE = "cloudtrace.$UNIVERSE_DOMAIN$"
 
               include Paths
 
               # @private
@@ -226,16 +229,17 @@
                 options = ::Gapic::CallOptions.new(**options.to_h) if options.respond_to? :to_h
 
                 # Customize the options with defaults
                 call_metadata = @config.rpcs.batch_write_spans.metadata.to_h
 
-                # Set x-goog-api-client and x-goog-user-project headers
+                # Set x-goog-api-client, x-goog-user-project and x-goog-api-version headers
                 call_metadata[:"x-goog-api-client"] ||= ::Gapic::Headers.x_goog_api_client \
                   lib_name: @config.lib_name, lib_version: @config.lib_version,
                   gapic_version: ::Google::Cloud::Trace::V2::VERSION,
                   transports_version_send: [:rest]
 
+                call_metadata[:"x-goog-api-version"] = API_VERSION unless API_VERSION.empty?
                 call_metadata[:"x-goog-user-project"] = @quota_project_id if @quota_project_id
 
                 options.apply_defaults timeout:      @config.rpcs.batch_write_spans.timeout,
                                        metadata:     call_metadata,
                                        retry_policy: @config.rpcs.batch_write_spans.retry_policy
@@ -360,15 +364,16 @@
                 options = ::Gapic::CallOptions.new(**options.to_h) if options.respond_to? :to_h
 
                 # Customize the options with defaults
                 call_metadata = @config.rpcs.create_span.metadata.to_h
 
-                # Set x-goog-api-client and x-goog-user-project headers
+                # Set x-goog-api-client, x-goog-user-project and x-goog-api-version headers
                 call_metadata[:"x-goog-api-client"] ||= ::Gapic::Headers.x_goog_api_client \
                   lib_name: @config.lib_name, lib_version: @config.lib_version,
                   gapic_version: ::Google::Cloud::Trace::V2::VERSION,
                   transports_version_send: [:rest]
 
+                call_metadata[:"x-goog-api-version"] = API_VERSION unless API_VERSION.empty?
                 call_metadata[:"x-goog-user-project"] = @quota_project_id if @quota_project_id
 
                 options.apply_defaults timeout:      @config.rpcs.create_span.timeout,
                                        metadata:     call_metadata,
                                        retry_policy: @config.rpcs.create_span.retry_policy