fix: linter

Author: vmihailenco

example/logs/main.rb

@@ -16,7 +16,7 @@
 
   # Add environment information
   c.resource = OpenTelemetry::SDK::Resources::Resource.create(
-    'deployment.environment.name' => ENV.fetch('RACK_ENV', 'development'),
+    'deployment.environment.name' => ENV.fetch('RACK_ENV', 'development')
   )
 end
 
@@ -37,7 +37,7 @@
     'operation' => 'fetch_data',
     'plant_type' => 'cedar',
     'is_evergreen' => true
-  },
+  }
 )
 
 # Emit a warning log with different attributes.
@@ -48,14 +48,14 @@
   body: 'Database connection is slow.',
   attributes: {
     'component' => 'database',
-    'latency_ms' => 500,
-  },
+    'latency_ms' => 500
+  }
 )
 
 # Emit an error log.
 begin
-  raise StandardError, "Failed to write to disk"
-rescue => e
+  raise StandardError, 'Failed to write to disk'
+rescue StandardError => e
   logger.on_emit(
     timestamp: Time.now,
     severity_text: 'ERROR',
@@ -64,7 +64,7 @@
     attributes: {
       'exception.type' => e.class.name,
       'exception.message' => e.message,
-      'exception.stacktrace' => e.backtrace.join("\n"),
-    },
+      'exception.stacktrace' => e.backtrace.join("\n")
+    }
   )
 end

example/metrics/main.rb

@@ -16,7 +16,7 @@
 
   # Add environment information
   c.resource = OpenTelemetry::SDK::Resources::Resource.create(
-    'deployment.environment.name' => ENV.fetch('RACK_ENV', 'development'),
+    'deployment.environment.name' => ENV.fetch('RACK_ENV', 'development')
   )
 end
 

example/otlp-logs/Gemfile

@@ -4,8 +4,8 @@ source 'https://rubygems.org'
 
 gem 'logger', '~> 1.7.0'
 
-gem 'opentelemetry-sdk', '~> 1.8.0'
 gem 'opentelemetry-exporter-otlp', '~> 0.30.0'
+gem 'opentelemetry-sdk', '~> 1.8.0'
 
-gem 'opentelemetry-logs-sdk', '~> 0.2.0'
 gem 'opentelemetry-exporter-otlp-logs', '~> 0.2.0'
+gem 'opentelemetry-logs-sdk', '~> 0.2.0'

example/otlp-logs/main.rb

@@ -10,7 +10,7 @@
 require 'opentelemetry/exporter/otlp_logs'
 
 # Ensure DSN is set
-dsn = ENV['UPTRACE_DSN']
+dsn = ENV.fetch('UPTRACE_DSN', nil)
 abort('Missing UPTRACE_DSN environment variable') unless dsn
 
 # Configure OpenTelemetry (for traces, metrics, and logs if desired)
@@ -21,7 +21,7 @@
   endpoint: 'https://api.uptrace.dev/v1/logs',
   headers: { 'uptrace-dsn': dsn },  # Uptrace auth
   compression: 'gzip',              # Reduce bandwidth
-  timeout: 10                        # Seconds
+  timeout: 10 # Seconds
 )
 
 # Attach batch processor (buffers + exports logs)

example/otlp-metrics/Gemfile

@@ -4,9 +4,9 @@ source 'https://rubygems.org'
 
 gem 'logger', '~> 1.7.0'
 
-gem 'opentelemetry-sdk', '~> 1.8.0'
 gem 'opentelemetry-exporter-otlp', '~> 0.30.0'
+gem 'opentelemetry-sdk', '~> 1.8.0'
 
-gem 'opentelemetry-metrics-sdk', '~> 0.7.3'
-gem 'opentelemetry-metrics-api', '~> 0.3.0'
 gem 'opentelemetry-exporter-otlp-metrics', '~> 0.5.0'
+gem 'opentelemetry-metrics-api', '~> 0.3.0'
+gem 'opentelemetry-metrics-sdk', '~> 0.7.3'

example/otlp-metrics/main.rb

@@ -11,7 +11,7 @@
 require 'opentelemetry-exporter-otlp-metrics'
 
 # Fetch Uptrace DSN from environment (required)
-dsn = ENV['UPTRACE_DSN']
+dsn = ENV.fetch('UPTRACE_DSN', nil)
 abort('Missing UPTRACE_DSN environment variable') unless dsn
 
 puts "Using Uptrace DSN: #{dsn}"

example/otlp-traces/Gemfile

@@ -4,6 +4,6 @@ source 'https://rubygems.org'
 
 gem 'logger', '~> 1.7.0'
 
-gem 'opentelemetry-sdk', '~> 1.8.0'
 gem 'opentelemetry-exporter-otlp', '~> 0.30.0'
 gem 'opentelemetry-propagator-xray', '~> 0.24.0'
+gem 'opentelemetry-sdk', '~> 1.8.0'

example/otlp-traces/main.rb

@@ -11,7 +11,7 @@
 require 'opentelemetry/instrumentation/all'
 
 # Fetch Uptrace DSN from environment (required)
-dsn = ENV['UPTRACE_DSN']
+dsn = ENV.fetch('UPTRACE_DSN', nil)
 abort('Missing UPTRACE_DSN environment variable') unless dsn
 
 puts "Using Uptrace DSN: #{dsn}"

example/rails/Gemfile

@@ -2,7 +2,7 @@
 
 source 'https://rubygems.org'
 
-gem 'rails', '~> 8.0.2'
-gem 'puma', '~> 6.4'
 gem 'opentelemetry-instrumentation-rails', '~> 0.36.0'
+gem 'puma', '~> 6.4'
+gem 'rails', '~> 8.0.2'
 gem 'uptrace', path: '../..'

example/rails/config.ru

@@ -19,6 +19,7 @@ Uptrace.configure_opentelemetry(dsn: '') do |c|
   c.service_version = '1.0.0'
 end
 
+# TraceRequestApp is a minimal Rails application
 class TraceRequestApp < Rails::Application
   config.root = __dir__
   config.secret_key_base = 'secret_key_base'
@@ -31,6 +32,7 @@ class TraceRequestApp < Rails::Application
   config.paths['config/routes.rb'] = []
 end
 
+# ExampleController
 class ExampleController < ActionController::Base
   include Rails.application.routes.url_helpers