Module: OpenTrace

Defined in:
lib/opentrace.rb,
lib/opentrace/rails.rb,
lib/opentrace/client.rb,
lib/opentrace/config.rb,
lib/opentrace/logger.rb,
lib/opentrace/version.rb,
lib/opentrace/middleware.rb,
lib/opentrace/log_forwarder.rb

Defined Under Namespace

Classes: Client, Config, LogForwarder, Logger, Middleware, Railtie

Constant Summary collapse

LEVEL_VALUES = 
{ "DEBUG" => 0, "INFO" => 1, "WARN" => 2, "ERROR" => 3, "FATAL" => 4 }.freeze
VERSION = 
"0.2.1"

Class Method Summary collapse

Class Method Details

.config ⇒ Object 



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# File 'lib/opentrace.rb', line 20

def config
  @config ||= Config.new
end

.configure {|config| ... } ⇒ Object

Yields:



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# File 'lib/opentrace.rb', line 15

def configure
  yield config
  reset_client!
end

.current_request_id ⇒ Object 



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# File 'lib/opentrace.rb', line 92

def current_request_id
  Fiber[:opentrace_request_id]
end

.current_request_id=(id) ⇒ Object 



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# File 'lib/opentrace.rb', line 96

def current_request_id=(id)
  Fiber[:opentrace_request_id] = id
end

.disable! ⇒ Object 



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# File 'lib/opentrace.rb', line 84

def disable!
  config.enabled = false
end

.enable! ⇒ Object 



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# File 'lib/opentrace.rb', line 88

def enable!
  config.enabled = true
end

.enabled? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/opentrace.rb', line 80

def enabled?
  config.enabled?
end

.error(exception, metadata = {}) ⇒ Object 



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# File 'lib/opentrace.rb', line 59

def error(exception, metadata = {})
  return unless enabled?

  meta = metadata.is_a?(Hash) ? metadata.dup : {}
  meta[:exception_class]   = exception.class.name
  meta[:exception_message] = exception.message&.slice(0, 500)

  if exception.backtrace
    cleaned = if defined?(::Rails) && ::Rails.respond_to?(:backtrace_cleaner)
                ::Rails.backtrace_cleaner.clean(exception.backtrace)
              else
                exception.backtrace.reject { |l| l.include?("/gems/") }
              end
    meta[:backtrace] = cleaned.first(15)
  end

  log("ERROR", exception.message.to_s, meta)
rescue StandardError
  # Never raise to the host app
end

.log(level, message, metadata = {}) ⇒ Object 



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# File 'lib/opentrace.rb', line 24

def log(level, message, metadata = {})
  return unless enabled?
  return unless level_meets_threshold?(level)

  # 1. Start with user-defined context (lowest priority)
  meta = resolve_context

  # 2. Merge caller-provided metadata (overrides context)
  meta.merge!(metadata) if metadata.is_a?(Hash)

  # 3. Static context — only fills in keys not already set
  static_context.each { |k, v| meta[k] ||= v }

  # 4. Request ID from middleware (if not already set by caller or context)
  meta[:request_id] ||= current_request_id if current_request_id

  # Extract trace_id to top level before building payload
  trace_id = meta.delete(:trace_id)

  payload = {
    timestamp: Time.now.utc.strftime("%Y-%m-%dT%H:%M:%S.%6NZ"),
    level: level.to_s.upcase,
    service: config.service,
    environment: config.environment,
    message: message.to_s,
    metadata: meta.compact
  }

  payload[:trace_id] = trace_id.to_s if trace_id

  client.enqueue(payload)
rescue StandardError
  # Never raise to the host app
end

.reset! ⇒ Object 



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# File 'lib/opentrace.rb', line 104

def reset!
  shutdown(timeout: 1)
  @config = nil
  @client = nil
  @static_context = nil
  @at_exit_registered = nil
end

.shutdown(timeout: 5) ⇒ Object 



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# File 'lib/opentrace.rb', line 100

def shutdown(timeout: 5)
  @client&.shutdown(timeout: timeout)
end