feat: Update example and readme

instrumentation/logger/README.md

@@ -1,6 +1,6 @@
 # OpenTelemetry Logger Instrumentation
 
-TODO: Update description. This README is incomplete.
+The Logger instrumentation is a community-maintained bridge for the Ruby [logger][logger-home] standard library.
 
 ## How do I get started?
 
@@ -30,23 +30,33 @@ OpenTelemetry::SDK.configure do |c|
 end
 ```
 
-TODO: Add documentation for config options.
-
 ## Examples
 
-TODO: Create example
+Example usage can be seen in the `./example/logger.rb` file [here](https://github.com/open-telemetry/opentelemetry-ruby-contrib/blob/main/instrumentation/logger/example/logger.rb)
+
+## Development
+
+The test suite leverages [appraisal][appraisal] to verify the integration across multiple Rails versions. To run the tests with appraisal:
+
+```shell
+cd instrumentation/logger
+bundle exec appraisal install
+bundle exec appraisal rake test
+```
 
 ## How can I get involved?
 
-The `opentelemetry-instrumentation-logger` gem source is [on github][repo-github], along with related gems including `opentelemetry-api` and `opentelemetry-sdk`.
+The `opentelemetry-instrumentation-logger` gem source is [on github][repo-github], along with related gems including `opentelemetry-logs-api` and `opentelemetry-logs-sdk`.
 
 The OpenTelemetry Ruby gems are maintained by the OpenTelemetry-Ruby special interest group (SIG). You can get involved by joining us in [GitHub Discussions][discussions-url] or attending our weekly meeting. See the [meeting calendar][community-meetings] for dates and times. For more information on this and other language SIGs, see the OpenTelemetry [community page][ruby-sig].
 
 ## License
 
 The `opentelemetry-instrumentation-logger` gem is distributed under the Apache 2.0 license. See [LICENSE][license-github] for more information.
 
+[appraisal]: https://github.com/thoughtbot/appraisal
 [bundler-home]: https://bundler.io
+[logger-home]: https://github.com/ruby/logger
 [repo-github]: https://github.com/open-telemetry/opentelemetry-ruby
 [license-github]: https://github.com/open-telemetry/opentelemetry-ruby-contrib/blob/main/LICENSE
 [ruby-sig]: https://github.com/open-telemetry/community#ruby-sig

instrumentation/logger/example/logger.rb

@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+# TODO: Test me once the logs API/SDK gems have been released
+# Since the gems aren't released, this is broken atm
+require 'bundler/inline'
+
+gemfile(true) do
+  source 'https://rubygems.org'
+
+  gem 'logger'
+  gem 'opentelemetry-sdk'
+  gem 'opentelemetry-logs-api'
+  gem 'opentelemetry-logs-sdk'
+  gem 'opentelemetry-instrumentation-logger', path: '../'
+end
+
+require 'opentelemetry-logs-sdk'
+require 'opentelemetry-instrumentation-logger'
+require 'logger'
+
+# Don't attempt to export traces, Logger instrumentation only emits logs.
+ENV['OTEL_TRACES_EXPORTER'] ||= 'none'
+
+OpenTelemetry::SDK.configure do |c|
+  c.use OpenTelemetry::Instrumentation::Logger
+end
+
+at_exit do
+  OpenTelemetry.logger_provider.shutdown
+end
+
+logger = Logger.new
+logger.debug('emerald ash borer')