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init lambda component
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‎.gitignore‎

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*.gem
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*.rbc
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/.config
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/coverage/
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/InstalledFiles
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/pkg/
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/spec/reports/
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/spec/examples.txt
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/test/tmp/
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/test/version_tmp/
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/tmp/
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# Used by dotenv library to load environment variables.
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# .env
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## Specific to RubyMotion:
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.dat*
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.repl_history
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build/
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*.bridgesupport
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build-iPhoneOS/
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build-iPhoneSimulator/
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## Specific to RubyMotion (use of CocoaPods):
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#
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# We recommend against adding the Pods directory to your .gitignore. However
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# you should judge for yourself, the pros and cons are mentioned at:
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# https://guides.cocoapods.org/using/using-cocoapods.html#should-i-check-the-pods-directory-into-source-control
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#
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# vendor/Pods/
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## Documentation cache and generated files:
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/.yardoc/
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/_yardoc/
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/doc/
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/rdoc/
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## Environment normalization:
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/.bundle/
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/vendor/bundle
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/lib/bundler/man/
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# for a library or gem, you might want to ignore these files since the code is
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# intended to run in multiple environments; otherwise, check them in:
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# Gemfile.lock
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# .ruby-version
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# .ruby-gemset
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# unless supporting rvm < 1.11.0 or doing something fancy, ignore this:
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.rvmrc
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out/

‎.travis.yml‎

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language: ruby
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rvm:
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- 2.3
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script:
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- gem install cfhighlander
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- if [ "${TRAVIS_PULL_REQUEST}" != "false" ]; then cfhighlander cfcompile ; else cfhighlander cfcompile --validate; fi

‎LICENSE‎

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MIT License
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Copyright (c) 2018 theonestack
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.

‎README.md‎

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![build-status](https://travis-ci.com/theonestack/hl-component-lambda.svg?branch=master)
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### Cfhighlander lambda component
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```bash
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# install highlander gem
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$ gem install cfhighlander
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# build and validate standalone component
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$ cfcompile --validate
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```
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### Parameters
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TBD
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### Configuration options
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TBD
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### Outputs
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TBD

‎lambda.cfhighlander.rb‎

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CfhighlanderTemplate do
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Name 'lambda'
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ComponentVersion component_version
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Description "#{component_name} - #{component_version}"
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functions.each do |function_name, lambda_config|
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if (lambda_config.has_key? 'enable_eni') && (lambda_config['enable_eni'])
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DependsOn 'vpc'
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break
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end
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end if defined? functions
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Parameters do
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ComponentParam 'EnvironmentName', 'dev', isGlobal: true
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ComponentParam 'EnvironmentType', 'development', isGlobal: true, allowedValues: ['development', 'production']
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functions.each do |function_name, lambda_config|
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if (lambda_config.has_key? 'enable_eni') && (lambda_config['enable_eni'])
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ComponentParam 'VPCId', type: 'AWS::EC2::VPC::Id'
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maximum_availability_zones.times do |az|
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ComponentParam "SubnetCompute#{az}"
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end
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break
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end
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end if defined? functions
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end
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end

‎lambda.cfndsl.rb‎

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CloudFormation do
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functions.each do |function_name, lambda_config|
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if (lambda_config.has_key? 'enable_eni') && (lambda_config['enable_eni'])
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az_conditions_resources('SubnetCompute', maximum_availability_zones)
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break
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end
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end if defined? functions
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tags = []
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tags << { Key: 'Environment', Value: Ref(:EnvironmentName) }
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tags << { Key: 'EnvironmentType', Value: Ref(:EnvironmentType) }
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extra_tags.each { |key,value| tags << { Key: key, Value: value } } if defined? extra_tags
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functions.each do |function_name, lambda_config|
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policies = []
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lambda_config['policies'].each do |name,policy|
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policies << iam_policy_allow(name,policy['action'],policy['resource'] || '*')
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end if lambda_config.has_key?('policies')
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IAM_Role("#{function_name}Role") do
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AssumeRolePolicyDocument service_role_assume_policy('lambda')
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Path '/'
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Policies policies if policies.any?
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ManagedPolicyArns lambda_config['managed_policies'] if lambda_config.has_key?('managed_policies')
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end
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if (lambda_config.has_key? 'enable_eni') && (lambda_config['enable_eni'])
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EC2_SecurityGroup("#{function_name}SecurityGroup") do
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GroupDescription FnSub("${EnvironmentName}-lambda-#{function_name}")
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VpcId Ref('VPCId')
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Tags tags
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end
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Output("#{function_name}SecurityGroup") {
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Value(Ref("#{function_name}SecurityGroup"))
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Export FnSub("${EnvironmentName}-#{component_name}-#{function_name}SecurityGroup")
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}
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end
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environment = lambda_config['environment'] || {}
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# Create Lambda function
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Lambda_Function(function_name) do
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Code({
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S3Bucket: distribution['bucket'],
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S3Key: FnSub("#{distribution['prefix']}/#{lambda_config['code_uri']}")
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})
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Environment(Variables: Hash[environment.collect { |k, v| [k, v] }])
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Handler(lambda_config['handler'] || 'index.handler')
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MemorySize(lambda_config['memory'] || 128)
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Role(FnGetAtt("#{function_name}Role", 'Arn'))
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Runtime(lambda_config['runtime'])
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Timeout(lambda_config['timeout'] || 10)
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if (lambda_config.has_key? 'enable_eni') && (lambda_config['enable_eni'])
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VpcConfig({
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SecurityGroupIds: [
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Ref("#{function_name}SecurityGroup")
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],
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SubnetIds: az_conditional_resources('SubnetCompute', maximum_availability_zones)
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})
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end
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if !lambda_config['named'].nil? && lambda_config['named']
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FunctionName(function_name)
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end
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Tags tags
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end
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lambda_config['events'].each do |name,event|
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case event['type']
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when 'schedule'
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Events_Rule("#{function_name}Schedule#{name}") do
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ScheduleExpression event['expression']
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State event['disable'] ? 'DISABLED' : 'ENABLED'
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target = {
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Arn: FnGetAtt(function_name, 'Arn'),
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Id: "lambda#{function_name}"
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}
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target['Input'] = event['payload'] if event.key?('payload')
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Targets([target])
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end
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Lambda_Permission("#{function_name}Permissions") do
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FunctionName Ref(function_name)
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Action 'lambda:InvokeFunction'
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Principal 'events.amazonaws.com'
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SourceArn FnGetAtt("#{function_name}Schedule#{name}", 'Arn')
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end
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when 'sns'
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SNS_Topic("#{function_name}Sns#{name}") do
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Subscription([
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{
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Endpoint: FnGetAtt(function_name, 'Arn'),
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Protocol: 'lambda'
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}
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])
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end
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Lambda_Permission("#{function_name}Permissions") do
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FunctionName Ref(function_name)
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Action 'lambda:InvokeFunction'
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Principal 'sns.amazonaws.com'
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SourceArn Ref("#{function_name}Sns#{name}")
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end
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end
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end if lambda_config.has_key?('events')
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end if defined? functions
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end

‎lambda.config.yaml‎

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component_version: 1.0.0
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maximum_availability_zones: 5
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# Demo Config
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# distribution:
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# bucket: source.example.dev
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# key: /lambda
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#
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# functions:
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# myfunction:
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# handler: handler.lambda_handler
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# runtime: python3.6
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# code_uri: myfunction/${MyFunctionVersion}/src.zip
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# timeout: 30
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# environment:
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# Environment:
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# Ref: Environment
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# policies:
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# logs:
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# Action:
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# - logs:PutLogEvents
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# - logs:DescribeLogStreams
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# - logs:DescribeLogGroups
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# Resource:
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# - '*'
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# enable_eni: true
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# events:
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# cron:
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# type: schedule
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# expression: cron(0 12 * * ? *)
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# payload: "{ 'a': 1, 'b': 2 }"
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# trigger:
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# type: sns

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