update tool

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

.drone.yml

@@ -0,0 +1,57 @@
+workspace:
+  base: /srv/app
+  path: src/github.com/appleboy/drone-line
+
+pipeline:
+  test:
+    image: appleboy/golang-testing
+    pull: true
+    environment:
+      TAGS: netgo
+      GOPATH: /srv/app
+    commands:
+      - make dep_install
+      - make vet
+      - make lint
+      - make test
+      - make build
+      # build binary for docker image
+      - make static_build
+    when:
+      event: [ push, tag, pull_request ]
+
+  release:
+    image: appleboy/golang-testing
+    pull: true
+    environment:
+      TAGS: netgo
+      GOPATH: /srv/app
+    commands:
+      - make release
+    when:
+      event: [ tag ]
+      branch: [ refs/tags/* ]
+
+  docker:
+    image: plugins/docker
+    repo: appleboy/drone-line
+    tags: [ '${DRONE_TAG}' ]
+    when:
+      event: [ tag ]
+      branch: [ refs/tags/* ]
+
+  docker:
+    image: plugins/docker
+    repo: appleboy/drone-line
+    tags: [ 'latest' ]
+    when:
+      event: [ push ]
+      branch: [ master ]
+
+  github:
+    image: plugins/github-release
+    files:
+      - dist/release/*
+    when:
+      event: [ tag ]
+      branch: [ refs/tags/* ]

.gitignore

@@ -26,3 +26,4 @@ vendor
 drone-scp
 coverage.txt
 .env
+dist

Makefile

@@ -1,8 +1,17 @@
-.PHONY: install build test html update docker_build docker_image docker docker_deploy clean
+.PHONY: test drone-line build fmt vet errcheck lint install update release-dirs release-build release-copy release-check release
 
-VERSION := $(shell git describe --tags --always || git rev-parse --short HEAD)
-DEPLOY_ACCOUNT := "appleboy"
-DEPLOY_IMAGE := "drone-scp"
+DIST := dist
+EXECUTABLE := drone-scp
+
+# for dockerhub
+DEPLOY_ACCOUNT := appleboy
+DEPLOY_IMAGE := $(EXECUTABLE)
+
+TARGETS ?= linux darwin windows
+PACKAGES ?= $(shell go list ./... | grep -v /vendor/)
+SOURCES ?= $(shell find . -name "*.go" -type f)
+TAGS ?=
+LDFLAGS += -X 'main.Version=$(VERSION)'
 
 ifneq ($(shell uname), Darwin)
 	EXTLDFLAGS = -extldflags "-static" $(null)
@@ -10,39 +19,92 @@ else
 	EXTLDFLAGS =
 endif
 
-install:
-	glide install
+ifneq ($(DRONE_TAG),)
+	VERSION ?= $(DRONE_TAG)
+else
+	VERSION ?= $(shell git describe --tags --always || git rev-parse --short HEAD)
+endif
 
-build:
-	go build -ldflags="$(EXTLDFLAGS)-s -w -X main.Version=$(VERSION)"
+all: build
+
+fmt:
+	go fmt $(PACKAGES)
+
+vet:
+	go vet $(PACKAGES)
+
+errcheck:
+	@which errcheck > /dev/null; if [ $$? -ne 0 ]; then \
+		go get -u github.com/kisielk/errcheck; \
+	fi
+	errcheck $(PACKAGES)
+
+lint:
+	@which golint > /dev/null; if [ $$? -ne 0 ]; then \
+		go get -u github.com/golang/lint/golint; \
+	fi
+	for PKG in $(PACKAGES); do golint -set_exit_status $$PKG || exit 1; done;
 
 test:
-	go test -v -coverprofile=coverage.txt
+	for PKG in $(PACKAGES); do go test -cover -coverprofile $$GOPATH/src/$$PKG/coverage.txt $$PKG || exit 1; done;
 
 html:
 	go tool cover -html=coverage.txt
 
-update:
+dep_install:
+	glide install
+
+dep_update:
 	glide up
 
-docker_build:
-	CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -a -tags netgo -ldflags="-X main.Version=$(VERSION)"
+install: $(SOURCES)
+	go install -v -tags '$(TAGS)' -ldflags '$(EXTLDFLAGS)-s -w $(LDFLAGS)'
+
+build: $(EXECUTABLE)
+
+$(EXECUTABLE): $(SOURCES)
+	go build -v -tags '$(TAGS)' -ldflags '$(EXTLDFLAGS)-s -w $(LDFLAGS)' -o $@
+
+release: release-dirs release-build release-copy release-check
+
+release-dirs:
+	mkdir -p $(DIST)/binaries $(DIST)/release
+
+release-build:
+	@which gox > /dev/null; if [ $$? -ne 0 ]; then \
+		go get -u github.com/mitchellh/gox; \
+	fi
+	gox -os="$(TARGETS)" -arch="amd64 386" -tags="$(TAGS)" -ldflags="-s -w $(LDFLAGS)" -output="$(DIST)/binaries/$(EXECUTABLE)-$(VERSION)-{{.OS}}-{{.Arch}}"
+
+release-copy:
+	$(foreach file,$(wildcard $(DIST)/binaries/$(EXECUTABLE)-*),cp $(file) $(DIST)/release/$(notdir $(file));)
+
+release-check:
+	cd $(DIST)/release; $(foreach file,$(wildcard $(DIST)/release/$(EXECUTABLE)-*),sha256sum $(notdir $(file)) > $(notdir $(file)).sha256;)
+
+# for docker.
+static_build: line_build
+
+line_build:
+	CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -a -tags '$(TAGS)' -ldflags '$(EXTLDFLAGS)-s -w $(LDFLAGS)' -o $(DEPLOY_IMAGE)
 
 docker_image:
 	docker build -t $(DEPLOY_ACCOUNT)/$(DEPLOY_IMAGE) .
 
-docker: docker_build docker_image
+docker: static_build docker_image
 
 docker_deploy:
 ifeq ($(tag),)
 	@echo "Usage: make $@ tag=<tag>"
 	@exit 1
 endif
+	# deploy line image
 	docker tag $(DEPLOY_ACCOUNT)/$(DEPLOY_IMAGE):latest $(DEPLOY_ACCOUNT)/$(DEPLOY_IMAGE):$(tag)
 	docker push $(DEPLOY_ACCOUNT)/$(DEPLOY_IMAGE):$(tag)
 
 clean:
-	rm -rf coverage.txt $(DEPLOY_IMAGE)
+	go clean -x -i ./...
+	rm -rf coverage.txt $(EXECUTABLE) $(DIST) vendor
 
 version:
 	@echo $(VERSION)

easyssh/easyssh.go

@@ -16,7 +16,7 @@ import (
 	"golang.org/x/crypto/ssh/agent"
 )
 
-// Contains main authority information.
+// MakeConfig Contains main authority information.
 // User field should be a name of user on remote server (ex. john in ssh john@example.com).
 // Server field should be a remote machine address (ex. example.com in ssh john@example.com)
 // Key is a path to private key on your local machine.
@@ -107,7 +107,7 @@ func (ssh_conf *MakeConfig) Stream(command string) (output chan string, done cha
 	return outputChan, done, err
 }
 
-// Runs command on remote machine and returns its stdout as a string
+// Run command on remote machine and returns its stdout as a string
 func (ssh_conf *MakeConfig) Run(command string) (outStr string, err error) {
 	outChan, doneChan, err := ssh_conf.Stream(command)
 	if err != nil {