Class: OpenTelemetry::Instrumentation::AwsLambda::Handler

Inherits:
Object
  • Object
show all
Extended by:
Wrap
Defined in:
lib/opentelemetry/instrumentation/aws_lambda/handler.rb

Overview

Handler class that creates a span around the _HANDLER

Constant Summary

Constants included from Wrap

Wrap::AWS_TRIGGERS, Wrap::DEFAULT_FLUSH_TIMEOUT

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Wrap

instrument_handler, instrumentation_config, tracer, wrap_lambda

Constructor Details

#initialize ⇒ Handler

anytime when the code in a Lambda function is updated or the functional configuration is changed, the next invocation results in a cold start; therefore these instance variables will be up-to-date



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# File 'lib/opentelemetry/instrumentation/aws_lambda/handler.rb', line 18

def initialize
  @flush_timeout    = ENV.fetch('OTEL_INSTRUMENTATION_AWS_LAMBDA_FLUSH_TIMEOUT', '30000').to_i
  @original_handler = ENV['ORIG_HANDLER'] || ENV['_HANDLER'] || ''
  @handler_class    = nil
  @handler_method   = nil
  @handler_file     = nil

  resolve_original_handler
end

Instance Attribute Details

#handler_class ⇒ Object (readonly)

Returns the value of attribute handler_class.



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# File 'lib/opentelemetry/instrumentation/aws_lambda/handler.rb', line 14

def handler_class
  @handler_class
end

#handler_method ⇒ Object (readonly)

Returns the value of attribute handler_method.



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# File 'lib/opentelemetry/instrumentation/aws_lambda/handler.rb', line 14

def handler_method
  @handler_method
end

Instance Method Details

#call_wrapped(event:, context:) ⇒ Object

Try to record and re-raise any exception from the wrapped function handler Instrumentation should never raise its own exception



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# File 'lib/opentelemetry/instrumentation/aws_lambda/handler.rb', line 30

def call_wrapped(event:, context:)
  self.class.wrap_lambda(event: event, context: context, handler: @original_handler, flush_timeout: @flush_timeout) do
    call_original_handler(event: event, context: context)
  end
end