ref(scripts): use gometalinter for linters

scripts/validate-go.sh

@@ -15,42 +15,37 @@
 # limitations under the License.
 set -euo pipefail
 
-readonly  reset=$(tput sgr0)
-readonly    red=$(tput bold; tput setaf 1)
-readonly  green=$(tput bold; tput setaf 2)
-readonly yellow=$(tput bold; tput setaf 3)
-
 exit_code=0
 
-find_go_files() {
-  find . -type f -name "*.go" | grep -v vendor
-}
-
-hash golint 2>/dev/null || go get -u github.com/golang/lint/golint
-hash godir 2>/dev/null || go get -u github.com/Masterminds/godir
-
-echo "==> Running golint..."
-for pkg in $(godir pkgs | grep -v proto); do
-  golint_out=$(golint "$pkg" 2>&1)
-  if [[ -n "$golint_out" ]]; then
-    echo "${yellow}${golint_out}${reset}"
-  fi
-done
-
-echo "==> Running go vet..."
-echo -n "$red"
-go vet $(godir pkgs) 2>&1 | grep -v "^exit status " || exit_code=${PIPESTATUS[0]}
-echo -n "$reset"
-
-echo "==> Running gofmt..."
-failed_fmt=$(find_go_files | xargs gofmt -s -l)
-if [[ -n "${failed_fmt}" ]]; then
-  echo -n "${red}"
-  echo "gofmt check failed:"
-  echo "$failed_fmt"
-  gofmt -s -d "${failed_fmt}"
-  echo -n "${reset}"
-  exit_code=1
+if ! hash gometalinter 2>/dev/null ; then
+  go get github.com/alecthomas/gometalinter
+  gometalinter --install
 fi
 
-exit ${exit_code}
+echo
+echo "==> Running static validations <=="
+# Run linters that should return errors
+gometalinter \
+  --disable-all \
+  --enable deadcode \
+  --severity deadcode:error \
+  --enable gofmt \
+  --enable gosimple \
+  --enable ineffassign \
+  --enable misspell \
+  --enable vet \
+  --tests \
+  --vendor \
+  ./... || exit_code=1
+
+echo
+echo "==> Running linters <=="
+# Run linters that should return warnings
+gometalinter \
+  --disable-all \
+  --enable golint \
+  --vendor \
+  --skip proto \
+  ./... || :
+
+exit $exit_code