Modifications to setup .travis.yml and builds.

.travis.yml

@@ -0,0 +1,24 @@
+sudo: required
+
+services:
+- docker
+
+language: go
+go:
+- '1.6'
+
+script:
+- make all
+- make docker
+
+after_success:
+- if [ "$TRAVIS_BRANCH" == "master" ]; then
+        docker login -e $DOCKER_EMAIL -u $DOCKER_USER -p $DOCKER_PASS
+        docker push wrouesnel/postgres_exporter
+  fi
+
+env:
+  global:
+  - secure: RfoWQj5tEB/t3XL2tqJW7u7Qscpz1QBOfF9lMFpB4kAUMTtZU0zBbXfMo1JheGoJQQxD/7NLRHhbUWPT2489o3KKpRTQ7RHn3k8n5U7opH01bWX0+l/EPVmhlsKjSDSLGgmxz80j3I6C8ZV3qDUijSx7r90QUNHGbZtV7g+KtoUTpRV0zir/heK6qq9LHWNHbNsJyHK8qHmd6g1UzWIBaZPJ6a/n/rO2jq4uS1JR0VlIJPRF11HOLH8IjFQvVYpN7YbEslxyNsfQJUSP/7CghSLLVWPSATEjMm8a5GJVLc564+nYghm484psEtiMXkZ3n6ie7AT8aJrKfexWrwh2aCc+cK4PiyXrf4euZehZNYogmFCqWzd1LJKcN2uIkpBSuZQDm3e6c4qkkWGpx+RdFWtAMG8IgZLDbcuryxFNzMwHc2CJ009s9Zsa+g7D57csyR5LCZ8YtNGI3g8FmhwpCKvYkfKa9aijUEWyJMyT4Vhd/w7btMTuwYHgUQ85k4ov4Xjz5SNpAGgemig5G5w7PJj4NhGvIBz9weL154x/BFVjHOZZ6Y/bWgJIPoW1KM15x5K8QylWYEBUHtwiyVyXOxHqt6MOX1vYo1L37jMK88IErrfh/VmlxEhtN9wOghk8IudMfFwQtjIwiWlJf218wxMIzUjoyb5/25tU9f2OJrg=
+  - secure: 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
+  - secure: RRQH4Tr94OblZoqls50BIoyK1OvK9fALs4pAq1Uk5dksY1NWnomheQzOaHzbVfMfXc4zXAzppZIqxUDGn8GiSLbtJL6pnxsxYNGoCGdS8lMjjKWXbCAs8TBJobi3krOOjqgbhOWTpyluTEShnBcg7CjrRQUa/ChS3uE5kl21/4eIl9Be6Q08Eqm3p1yvMAyAgIL6Y6oPAAtBa6zIsi2MSNlryz3RKHJO7AheilppYx3E8B03A+a/oqvTTcw6w/RwBYxB8MYfSLC0jSssZz5pUSX/byUaklGFhQLnKAzJyhrMOvRyMVcO4PHaLgVi1eAKQz6eLQh7uEiIqKh19cuvTbZHDgu8zMpLDTxOW9U95e4kbjOZ5pWZ7E5QTrb24RZIt42JGbmme7PWOvy3zNbWHwfwiOF1qwYwISUcj2KFCpes8mDGt6iv46LfdlU0uoZdZu3MAiTiW0u2SD5hIeFq4XYesPtkS/TKFoAbB5Tu1qbxdmYu5NqmfvmxsmeNEm4inFJ5ap3fRRCVo668Z6qRMuQ1URcEfOz8iEftP9CnwSOXRuiuMo+W9GgckRuDZcPyQMCftq8+PhB+SjK57zrAd4Kxqf6kVHV16tcWqmFjfJJUFqmL+gpjT/VMEVDY2FOnbOARjkeLTjVC4dADBjxfJ6wmlLrfHdUm4GinbaHq0iA=

Makefile

@@ -1,16 +1,35 @@
 
+GO_SRC := $(shell find -type f -name "*.go")
+
+CONTAINER_NAME ?= wrouesnel/postgres_exporter:latest
+
+all: vet test postgres_exporter
+
 # Simple go build
-postgres_exporter: postgres_exporter.go
-	go build -o postgres_exporter .
+postgres_exporter: $(GO_SRC)
+	CGO_ENABLED=0 GOOS=linux go build -a -ldflags "-extldflags '-static' -X main.Version=git:$(shell git rev-parse HEAD)" -o postgres_exporter .
+
+# Take a go build and turn it into a minimal container
+docker: postgres_exporter
+	tar -cf - postgres_exporter | docker import --change "EXPOSE 9113" \
+			--change 'ENTRYPOINT [ "/postgres_exporter" ]' \
+			- $(CONTAINER_NAME)
+
+vet:
+	go vet .
+
+test:
+	go test -v .
 
 # Do a self-contained docker build - we pull the official upstream container,
 # then template out a dockerfile which builds the real image.
-docker:
+docker-build: postgres_exporter
 	docker run -v $(shell pwd):/go/src/github.com/wrouesnel/postgres_exporter \
+	    -w /go/src/github.com/wrouesnel/postgres_exporter \
 		golang:1.6-wheezy \
-		/go/src/github.com/wrouesnel/postgres_exporter/docker-build.bsh /postgres_exporter /go/src/github.com/wrouesnel/postgres_exporter | \
+		/bin/bash -c "make >&2 && tar -cf - ./postgres_exporter" | \
 		docker import --change "EXPOSE 9113" \
 			--change 'ENTRYPOINT [ "/postgres_exporter" ]' \
-			- wrouesnel/postgres_exporter
+			- $(CONTAINER_NAME)
 
-.PHONY: docker
+.PHONY: docker-build docker test vet

docker-build.bsh

@@ -1,4 +0,0 @@
-#!/bin/bash
-cd $2
-CGO_ENABLED=0 GOOS=linux go build -a -ldflags '-extldflags "-static"' -o $1 . 1>&2
-tar -cf - $1

postgres_exporter.go

@@ -19,6 +19,8 @@ import (
 	"strconv"
 )
 
+var Version string = "0.0.0-dev"
+
 var (
 	listenAddress = flag.String(
 		"web.listen-address", ":9113",