Module: OpenTelemetry::Resource::Detector::AWS::Lambda

Extended by:
Lambda
Included in:
Lambda
Defined in:
lib/opentelemetry/resource/detector/aws/lambda.rb

Overview

Lambda contains detect class method for determining Lambda resource attributes

Constant Summary collapse

RESOURCE =

Create a constant for resource semantic conventions

OpenTelemetry::SemanticConventions::Resource

Instance Method Summary collapse

Instance Method Details

#detect ⇒ Object 



20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
 
# File 'lib/opentelemetry/resource/detector/aws/lambda.rb', line 20

def detect
  # Return empty resource if not running on Lambda
  return OpenTelemetry::SDK::Resources::Resource.create({}) unless lambda_environment?

  resource_attributes = {}

  begin
    # Set Lambda-specific attributes from environment variables
    resource_attributes[RESOURCE::CLOUD_PROVIDER] = 'aws'
    resource_attributes[RESOURCE::CLOUD_PLATFORM] = 'aws_lambda'
    resource_attributes[RESOURCE::CLOUD_REGION] = ENV.fetch('AWS_REGION', nil)
    resource_attributes[RESOURCE::FAAS_NAME] = ENV.fetch('AWS_LAMBDA_FUNCTION_NAME', nil)
    resource_attributes[RESOURCE::FAAS_VERSION] = ENV.fetch('AWS_LAMBDA_FUNCTION_VERSION', nil)
    resource_attributes[RESOURCE::FAAS_INSTANCE] = ENV.fetch('AWS_LAMBDA_LOG_STREAM_NAME', nil)

    # Convert memory size to integer
    resource_attributes[RESOURCE::FAAS_MAX_MEMORY] = ENV['AWS_LAMBDA_FUNCTION_MEMORY_SIZE'].to_i if ENV['AWS_LAMBDA_FUNCTION_MEMORY_SIZE']
  rescue StandardError => e
    OpenTelemetry.handle_error(exception: e, message: 'Lambda resource detection failed')
    return OpenTelemetry::SDK::Resources::Resource.create({})
  end

  # Filter out nil or empty values
  # Note: we need to handle integers differently since they don't respond to empty?
  resource_attributes.delete_if do |_key, value|
    value.nil? || (value.respond_to?(:empty?) && value.empty?)
  end

  OpenTelemetry::SDK::Resources::Resource.create(resource_attributes)
end