logging.rb in google-cloud-logging-1.6.0

- old
+ new

@@ -81,26 +81,29 @@
       #     puts "[#{e.timestamp}] #{e.log_name} #{e.payload.inspect}"
       #   end
       #
       def self.new project_id: nil, credentials: nil, scope: nil, timeout: nil,
                    client_config: nil, project: nil, keyfile: nil
-        project_id ||= (project || default_project_id)
-        project_id = project_id.to_s # Always cast to a string
-        raise ArgumentError, "project_id is missing" if project_id.empty?
-
-        scope ||= configure.scope
-        timeout ||= configure.timeout
+        project_id    ||= (project || default_project_id)
+        scope         ||= configure.scope
+        timeout       ||= configure.timeout
         client_config ||= configure.client_config
+        credentials   ||= (keyfile || default_credentials(scope: scope))
 
-        credentials ||= (keyfile || default_credentials(scope: scope))
         unless credentials.is_a? Google::Auth::Credentials
           credentials = Logging::Credentials.new credentials, scope: scope
         end
 
+        if credentials.respond_to? :project_id
+          project_id ||= credentials.project_id
+        end
+        project_id = project_id.to_s # Always cast to a string
+        raise ArgumentError, "project_id is missing" if project_id.empty?
+
         Logging::Project.new(
           Logging::Service.new(
-            project_id, credentials, timeout: timeout,
+            project_id, credentials, timeout:       timeout,
                                      client_config: client_config
           )
         )
       end
 
@@ -134,9 +137,20 @@
       #   list](https://cloud.google.com/logging/docs/api/v2/resource-list).
       #   Self discovered on GCP.
       # * `labels` - (Hash) User defined labels. A `Hash` of label names to
       #   string label values or callables/`Proc` which are functions of the
       #   Rack environment.
+      # * `set_default_logger_on_rails_init` - (Boolean) Whether Google Cloud
+      #   Logging Logger should be allowed to start background threads and open
+      #   gRPC connections during Rails initialization. This should only be used
+      #   with a non-forking web server. Web servers such as Puma and Unicorn
+      #   should not set this, and instead set the Rails logger to a Google
+      #   Cloud Logging Logger object on the worker process by calling
+      #   {Railtie.set_default_logger} at the appropriate time, such as a
+      #   post-fork hook.
+      # * `on_error` - (Proc) A Proc to be run when an error is encountered
+      #   on a background thread. The Proc must take the error object as the
+      #   single argument. (See {AsyncWriter.on_error}.)
       #
       # See the [Configuration
       # Guide](https://googleapis.github.io/google-cloud-ruby/docs/stackdriver/latest/file.INSTRUMENTATION_CONFIGURATION)
       # for full configuration parameters.
       #