PMM-5723 Reviewdog checks. (percona#42)

* PMM-5723 Reviewdog checks.

* Update .travis.yml

* PMM-5723 Github Token for Reviewdog.

* PMM-5723 Fix build.

.golangci-required.yml

@@ -0,0 +1,13 @@
+---
+# The most valuable linters; they are required to pass for PR to be merged.
+linters:
+  disable-all: true
+  enable:
+    - depguard
+    - goimports
+    - ineffassign
+    - govet
+    - staticcheck
+
+issues:
+  exclude-use-default: false

.travis.yml

@@ -35,6 +35,13 @@ env:
     # Travis secrets are not exposed to pull requests from forks: https://docs.travis-ci.com/user/pull-requests#pull-requests-and-security-restrictions
     - AWS_ACCESS_KEY=AKIAZPBRO3QWGCO72MJZ
     - secure: "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"
+    # REVIEWDOG_GITHUB_API_TOKEN
+    - secure: "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"
+
+install:
+  # install reviewdog and golangci-lint
+  - curl https://raw.githubusercontent.com/reviewdog/reviewdog/master/install.sh| sh -s
+  - curl https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s latest
 
 script:
   - make travis

Makefile

@@ -60,7 +60,11 @@ promu:
 	        GOARCH=$(subst x86_64,amd64,$(patsubst i%86,386,$(shell uname -m))) \
 	        $(GO) get -u github.com/prometheus/promu
 
-travis: build test-race codecov tarball docker
+ci-reviewdog:                   ## Runs reviewdog checks.
+	bin/golangci-lint run -c=.golangci-required.yml --out-format=line-number | bin/reviewdog -f=golangci-lint -level=error -reporter=github-pr-check
+	bin/golangci-lint run -c=.golangci.yml --out-format=line-number | bin/reviewdog -f=golangci-lint -level=error -reporter=github-pr-review
+
+travis: build ci-reviewdog test-race codecov tarball docker
 
 codecov: gocoverutil
 	@gocoverutil -coverprofile=coverage.txt test $(pkgs)