[CM-136] Improvements added dep, linter, drone

.drone.yml

@@ -0,0 +1,41 @@
+workspace:
+  base: /go
+  # This path (src/github.com/**arduino**/) is important the match with the organization
+  path: src/github.com/arduino/${DRONE_REPO_NAME}
+
+pipeline:
+
+  test:
+    image: golang:1.10
+    environment:
+    - CGO_ENABLED=0
+    commands:
+    - go generate
+    # Tools install dep, golangci-lint
+    - go get -u github.com/golangci/golangci-lint/cmd/golangci-lint
+    - go get -u github.com/golang/dep/cmd/dep
+    # Check the dependency, the -skip-lock is useful because the version are not fixed but depends from the branch master of the libraries so they change very often
+    - dep check
+    # Check if the code is formatted
+    -  $(exit $(go fmt ./... | wc -l))
+    # Test
+    - go test ./...  -v -cover -coverprofile cover.out
+    # Print the test coverage
+    - go tool cover -func=cover.out
+    - go tool cover -html=cover.out -o ${DRONE_REPO_NAME}-${CI_COMMIT_SHA:0:7}.html
+    # Lint
+    - golangci-lint run
+    when:
+      event: [push, tag, deployment]
+
+  build:
+    image: golang:1.10
+    environment:
+    - CGO_ENABLED=0
+    commands:
+    - go generate
+    - export VERSION=1.0-${CI_COMMIT_SHA:0:7}
+    - go build
+    - GOOS=linux GOARCH=arm go build  -o=arduino-connector-arm
+    when:
+      event: [push, tag, deployment]

.gitignore

@@ -1,4 +1,5 @@
 certificate*
 arduino-connector
 arduino-connector.cfg
-arduino-connector-arm
+arduino-connector-arm
+.idea

.golangci.yml

@@ -0,0 +1,19 @@
+linters-settings:
+  govet:
+    check-shadowing: true
+  golint:
+    min-confidence: 0
+  gocyclo:
+    min-complexity: 13 # Should be 10 but was brought to 13 to speed up the development
+    suggest-new: true
+  dupl:
+    threshold: 100
+  goconst:
+    min-len: 2
+    min-occurrences: 2
+
+  misspell:
+    locale: US
+
+linters:
+  enable-all: true