Add Travis check for Gofmt.

.travis.yml

@@ -11,6 +11,7 @@ before_script:
  - sudo service influxdb start
 script:
  - export PATH=$PATH:$HOME/gopath/bin
+ - ./deploy/check_gofmt.sh .
+ - go vet github.com/google/cadvisor/...
  - godep go test -v -race -test.short github.com/google/cadvisor/...
  - godep go build github.com/google/cadvisor
- - go vet github.com/google/cadvisor/...

deploy/check_gofmt.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+# Check usage.
+if [ $# -ne 1 ]; then
+  echo "USAGE: check_gofmt <source directory>"
+  exit 1
+fi
+
+# Check formatting on non Godep'd code.
+GOFMT_PATHS=$(find . -not -wholename "*.git*" -not -wholename "*Godeps*" -not -name "." -type d)
+
+# Find any files with gofmt problems
+BAD_FILES=$(gofmt -s -l $GOFMT_PATHS)
+
+if [ -n "$BAD_FILES" ]; then
+  echo "The following files are not properly formatted:"
+  echo $BAD_FILES
+  exit 1
+fi