Make current git hash available at /version . Closes #21.

.gitignore

@@ -0,0 +1 @@
+/files/version

Makefile

@@ -22,7 +22,7 @@ pre-commit: lint build test
 travis: pre-commit
 
 .PHONY: deploy
-deploy: check
+deploy: check version
 	aedeploy gcloud preview app deploy app.yaml --promote
 
 CURRENT_DIR = "$(shell pwd)"
@@ -38,6 +38,12 @@ else
 	@echo "Actual:   ${CURRENT_DIR}"
 endif
 
+# Version file.
+
+.PHONY: version
+version:
+	git rev-parse HEAD > ./files/version
+
 # Google Cloud Datastore Emulator
 
 GCD_NAME = gcd-grpc-1.0.0
@@ -53,7 +59,7 @@ ${DATABASE_TESTING_FOLDER}/gcd/gcd.sh:
 # Testing
 
 .PHONY: serve
-serve: check get-datastore-emulator
+serve: check get-datastore-emulator version
 	go run *.go -local
 
 .PHONY: test

app.yaml

@@ -5,6 +5,8 @@ api_version: go1
 handlers:
 - url: /
   script: _go_app
+- url: /version
+  script: _go_app
 - url: /favicon.ico
   script: _go_app
 - url: /static/.*

server.go

@@ -23,6 +23,7 @@ func main() {
 
 	staticHandler := http.FileServer(http.Dir("files"))
 	http.Handle("/", staticHandler)
+	http.Handle("/version", staticHandler)
 	http.Handle("/favicon.ico", staticHandler)
 	http.Handle("/static/", staticHandler)