Gruf::StackdriverTrace

Add Stackdriver trace support for gruf.

Add this line to your application's Gemfile:

gem 'gruf-stackdriver-trace'

And then execute:

$ bundle

Or install it yourself as:

$ gem install gruf-stackdriver-trace

Configure and use interceptor in gruf's initializer.

require 'gruf/stackdriver_trace'

Gruf.configure do |c|
  # optional
  Gruf::StackdriverTrace.configure do |config|
  end
  
  c.interceptors.use(Gruf::StackdriverTrace::ServerInterceptor)
end

Specify Gruf::StackdriverTrace::ClientInterceptor instance to client_options[:interceptors].

client = Gruf::Client.new(
    service: Rpc::Products,
    client_options: {
        interceptors: [
            Gruf::StackdriverTrace::ClientInterceptor.new
        ]
    }
)
resp = client.call(:GetProduct)

NOTE: Gruf::StackdriverTrace::ClientInterceptor will not be enabled if the tracing context of Gruf::StackdriverTrace::ServerInterceptor or Stackdriver Trace(ex. use with Rails middleware) cannot be obtained.

You can configure with Gruf::StackdriverTrace.configure { |config| ... }.

REF: https://github.com/googleapis/google-cloud-ruby/blob/master/stackdriver/INSTRUMENTATION_CONFIGURATION.md#trace

• config[:service] (default: nil)
  • A reporter Class that provides to send traced data
  • SEE: https://github.com/googleapis/google-cloud-ruby/blob/master/google-cloud-trace/lib/google/cloud/trace/async_reporter.rb
• config[:sampled] (default: true)
  • Whether to capture tracing
  • true: enable tracing
  • false: disable tracing
  • ex. config[:sampled] = Rails.env.production? to be enable tracing in only production env.
• config[:capture_stack] (default: true)
  • Whether to capture stack traces for each span
  • true: enable to recording of stack trace
  • false: disable to recording of stack trace
• config[:sampler] (default: nil)
  • A sampler Class makes the decision whether to record a trace for each request
  • SEE: https://github.com/googleapis/google-cloud-ruby/blob/master/google-cloud-trace/lib/google/cloud/trace/time_sampler.rb
• config[:span_id_generator] (default: nil)
  • A generator Proc that generates the name String for new TraceRecord
  • SEE: https://github.com/googleapis/google-cloud-ruby/blob/master/google-cloud-trace/lib/google/cloud/trace/trace_record.rb#L59-L60

If you are running the application locally, in self-hosted VMs, or a third party hosting service, you will need to provide the project ID and credentials (keyfile) to the Google Cloud client library. See this section for details.

ex.

Google::Cloud.configure do |config|
  config.project_id = "your-project-id"
  config.keyfile = "path/to/service-account.json"
end

TODO

Bug reports and pull requests are welcome on GitHub at https://github.com/atman-inc/gruf-stackdriver-trace. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

The gem is available as open source under the terms of the MIT License.

Everyone interacting in the Gruf::StackdriverTrace project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.