add gofmt verify in CI

Signed-off-by: Crazykev <crazykev@zju.edu.cn>

.travis.yml

@@ -17,6 +17,7 @@ before_script:
 
 script:
   - make .gitvalidation
+  - make gofmt
   - make lint
   - make integration
   - make docs

Makefile

@@ -30,6 +30,7 @@ help:
 	@echo " * 'integration' - Execute integration tests"
 	@echo " * 'clean' - Clean artifacts"
 	@echo " * 'lint' - Execute the source code linter"
+	@echo " * 'gofmt' - Verify the source code gofmt"
 
 lint: ${OCID_LINK}
 	@which gometalinter > /dev/null 2>/dev/null || (echo "ERROR: gometalinter not found. Consider 'make install.tools' target" && false)
@@ -40,6 +41,9 @@ ${OCID_LINK}:
 	mkdir -p ${OCID_LINK_DIR}
 	ln -sfn ${CURDIR} ${OCID_LINK}
 
+gofmt:
+	@./hack/verify-gofmt.sh
+
 conmon:
 	make -C $@
 
@@ -164,6 +168,7 @@ install.tools: .install.gitvalidation .install.gometalinter .install.md2man
 	conmon \
 	default \
 	docs \
+	gofmt \
 	help \
 	install \
 	lint \

hack/verify-gofmt.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+find_files() {
+  find . -not \( \
+      \( \
+        -wholename '*/vendor/*' \
+      \) -prune \
+    \) -name '*.go'
+}
+
+GOFMT="gofmt -s"
+bad_files=$(find_files | xargs $GOFMT -l)
+if [[ -n "${bad_files}" ]]; then
+  echo "!!! '$GOFMT' needs to be run on the following files: "
+  echo "${bad_files}"
+  exit 1
+fi