Initial commit

contains:
* Actual template
* Example function
* Tests
* Integration test (make file)
* Integration tests (deployed as lambda)
* drone CI and CI scripts

Makefile

@@ -0,0 +1,68 @@
+.PHONY: help all install lint clean test deploy integration-test delete
+
+ifdef $(env)
+	include environments/$(env).env
+endif
+
+CFN         := cloudformation
+CFN_NAME    := example-cloud-function
+BUCKET      := $(shell aws s3 ls | grep templates | cut -c 24-)
+TEST_DATA   := 100
+TEST_RESULT := "2,4,5,10,20,25,50"
+EMAIL       := "cv@juancanham.com"
+
+help:
+	@echo  'Targets:'
+	@echo  ' * all [install clean lint test deploy integration-test]'
+	@echo  ' * delete'
+	@echo  '   - optionally you can specify an env to load overrides'
+
+all: install clean lint test deploy integration-test
+
+install:
+	pip install -r requirements.txt
+
+clean:
+	rm -f */**/*.pyc
+	rm -f $(CFN)/.*-generated.yaml
+	rm -f test-response.txt
+
+lint:
+	yamllint .
+	black .
+	pylint --disable line-too-long src/ tests/
+	cfn-lint $(CFN)/*.yaml
+	shellcheck ci/*.sh
+
+test:
+	pytest 
+
+deploy:
+	aws cloudformation package \
+		--template-file $(CFN)/lambda-sam-template.yaml \
+		--s3-bucket $(BUCKET) \
+		--output-template-file $(CFN)/.$(CFN_NAME)-generated.yaml
+
+	aws cloudformation deploy \
+		--stack-name $(CFN_NAME) \
+		--template-file $(CFN)/.$(CFN_NAME)-generated.yaml \
+		--capabilities CAPABILITY_IAM \
+		--parameter-overrides \
+			NotificationEmail=$(EMAIL) \
+			TestData=$(TEST_DATA) \
+			TestExpected=$(TEST_RESULT)
+
+delete:
+	aws cloudformation delete-stack --stack-name $(CFN_NAME)
+
+integration-test:
+	aws lambda invoke \
+		--payload $(TEST_DATA)
+		--log-type Tail \
+		--function-name $$(aws cloudformation describe-stacks \
+			--stack-name $(CFN_NAME) \
+			--output text \
+			--query 'Stacks[0].Outputs[?OutputKey==`LambdaArn`].OutputValue' \
+		) \
+		test-response.txt
+	grep $(TEST_RESULT) test-response.txt