plugin scaffold

fluent-plugin-enhance-k8s-metadata/Gemfile

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+source "https://rubygems.org"
+
+gemspec

fluent-plugin-enhance-k8s-metadata/README.md

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+# fluent-plugin-enhance-k8s-metadata
+
+[Fluentd](https://fluentd.org/) output plugin to add extra Kubernetes metadata to the events.
+
+- Sample of Input
+
+```json
+TBD
+```
+
+- Sample of Output
+
+```json
+TBD
+```
+
+## Installation
+
+### RubyGems
+
+```sh
+gem install fluent-plugin-enhance-k8s-metadata
+```
+
+### Bundler
+
+Add following line to your Gemfile:
+
+```ruby
+gem "fluent-plugin-enhance-k8s-metadata"
+```
+
+And then execute:
+
+```sh
+bundle
+```
+
+## Configuration
+
+TBD

fluent-plugin-enhance-k8s-metadata/Rakefile

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+require "bundler"
+Bundler::GemHelper.install_tasks
+
+require "rake/testtask"
+
+Rake::TestTask.new(:test) do |t|
+  t.libs.push("lib", "test")
+  t.test_files = FileList["test/**/test_*.rb"]
+  t.verbose = true
+  t.warning = true
+end
+
+task default: [:test]

fluent-plugin-enhance-k8s-metadata/fluent-plugin-enhance-k8s-metadata.gemspec

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+lib = File.expand_path("../lib", __FILE__)
+$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
+
+Gem::Specification.new do |spec|
+  spec.name    = "fluent-plugin-enhance-k8s-metadata"
+  spec.version = "0.0.0"
+  spec.authors = ["Sumo Logic"]
+  spec.email   = ["collection@sumologic.com"]
+
+  spec.summary       = "Fluentd plugin for appending extra metadata from Kubernetes."
+  spec.homepage      = "https://github.com/SumoLogic/sumologic-kubernetes-collection"
+  spec.license       = "Apache-2.0"
+
+  test_files, files  = `git ls-files -z`.split("\x0").partition do |f|
+    f.match(%r{^(test|spec|features)/})
+  end
+  spec.files         = files
+  spec.executables   = files.grep(%r{^bin/}) { |f| File.basename(f) }
+  spec.test_files    = test_files
+  spec.require_paths = ["lib"]
+
+  spec.add_development_dependency "bundler", "~> 2.0"
+  spec.add_development_dependency "rake", "~> 12.0"
+  spec.add_development_dependency "test-unit", "~> 3.0"
+  spec.add_runtime_dependency "fluentd", [">= 0.14.10", "< 2"]
+end

fluent-plugin-enhance-k8s-metadata/lib/fluent/plugin/filter_enhance_k8s_metadata.rb

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+require 'fluent/plugin/filter'
+
+module Fluent
+  module Plugin
+    # fluentd filter plugin for appending Kubernetes metadata to events
+    class EnhanceK8sMetadataFilter < Fluent::Plugin::Filter
+      Fluent::Plugin.register_filter('enhance_k8s_metadata', self)
+
+      def filter(tag, time, record)
+      end
+    end
+  end
+end

fluent-plugin-enhance-k8s-metadata/test/helper.rb

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+$LOAD_PATH.unshift(File.expand_path("../../", __FILE__))
+require "test-unit"
+require "fluent/test"
+require "fluent/test/driver/filter"
+require "fluent/test/helpers"
+
+Test::Unit::TestCase.include(Fluent::Test::Helpers)
+Test::Unit::TestCase.extend(Fluent::Test::Helpers)

fluent-plugin-enhance-k8s-metadata/test/plugin/test_filter_enhance_k8s_metadata.rb

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+require "helper"
+require "fluent/plugin/filter_enhance_k8s_metadata.rb"
+
+class EnhanceK8sMetadataFilterTest < Test::Unit::TestCase
+  setup do
+    Fluent::Test.setup
+  end
+
+  private
+
+  def create_driver(conf)
+    Fluent::Test::Driver::Filter.new(Fluent::Plugin::EnhanceK8sMetadataFilter).configure(conf)
+  end
+end