awscli で elasticache の arn が引けないので手で作るやつ

Makefile

###
# make elasticache arn
###

export AWS_REGION := ap-northeast-1

# ex) arn:aws:elasticache:us-west-2:1234567890:cluster:my-cluster
.PHONY: arn
arn: fetch
	@ cat c.json \
		| jq '.CacheClusters[].CacheClusterId' \
		| jq --slurpfile i i.json \
			-r '"arn:aws:elasticache:\(env.AWS_REGION):\($$i[0].Account):cluster:\(.)"'

.PHONY: fetch
fetch: c.json i.json

c.json:
	@ aws elasticache describe-cache-clusters | tee $@

i.json:
	@ aws sts get-caller-identity | tee $@