ci: add build and ci tools

* Drone
* golangci-lint
* goreleaser
* commitlint
* scripts
* README, CONTRIBUTING

.drone.yml

@@ -0,0 +1,77 @@
+---
+kind: pipeline
+name: commitlint
+steps:
+- name: npm install
+  image: &node_image node:10.16.0-alpine
+  commands:
+  - npm i
+- name: tag/commitlint
+  image: *node_image
+  commands:
+  - npx commitlint --from HEAD~1 --to HEAD
+  when:
+    event:
+    - tag
+    - push
+- name: pr/commitlint
+  image: *node_image
+  commands:
+  - npx commitlint --from master --to HEAD || exit 1
+  when:
+    event:
+    - pull_request
+---
+kind: pipeline
+name: build
+workspace:
+  base: /go
+  path: src/github.com/suzuki-shunsuke/drone-jsonnet-generator
+steps:
+- name: golangci-lint
+  image: golangci/golangci-lint:v1.17.1
+  commands:
+  - golangci-lint run
+- name: codecov
+  image: &image_go golang:1.12.5
+  commands:
+  # bash and cgo seem to be required
+  - bash scripts/codecov-test.sh
+  - curl -s https://codecov.io/bash > /tmp/codecov.sh
+  - test "$LOCAL" == "true" || bash /tmp/codecov.sh
+  environment:
+    CODECOV_TOKEN:
+      from_secret: codecov_token
+- name: fetch tags
+  image: plugins/git
+  commands:
+  - git fetch --tags
+  when:
+    event:
+    - tag
+- name: release
+  image: &goreleaser goreleaser/goreleaser:v0.109.0
+  commands:
+  - goreleaser release
+  environment:
+    GO111MODULE: on
+    GITHUB_TOKEN:
+      from_secret: github_token
+  when:
+    event:
+    - tag
+- name: git
+  image: plugins/git
+  commands:
+  # bash not found
+  - sh scripts/tag-dummy.sh
+  when:
+    event:
+    - pull_request
+- name: release/pr
+  image: *goreleaser
+  commands:
+  - goreleaser release --skip-publish
+  when:
+    event:
+    - pull_request

.gitignore

@@ -0,0 +1,9 @@
+vendor
+dist
+node_modules
+profile.out
+.coverage
+coverage.txt
+
+# https://github.com/suzuki-shunsuke/git-rm-branch
+.git-rm-branch.yml

.golangci.yml

@@ -0,0 +1,20 @@
+---
+linters:
+  enable:
+  - deadcode
+  - goconst
+  - gofmt
+  - goimports
+  - golint
+  - gosimple
+  - govet
+  - interfacer
+  - maligned
+  - misspell
+  - nakedret
+  - staticcheck
+  - structcheck
+  - unconvert
+  - unused
+  - varcheck
+  disable-all: true

.goreleaser.yml

@@ -0,0 +1,12 @@
+---
+builds:
+- binary: drone-jsonnet-generator
+  main: cmd/drone-jsonnet-generator/main.go
+  env:
+  - CGO_ENABLED=0
+  goos:
+  - windows
+  - darwin
+  - linux
+  goarch:
+  - amd64

CONTRIBUTING.md

@@ -0,0 +1,74 @@
+# Contributing
+
+## Check before send a pull request
+
+* Commit message format conforms the [AngularJS Commit Message Format](https://github.com/angular/angular.js/blob/master/DEVELOPERS.md#commits)
+* [Commit message type is appropriate](https://github.com/angular/angular.js/blob/master/DEVELOPERS.md#type)
+* [If the pull request includes breaking changes, please describe them](https://github.com/angular/angular.js/blob/master/DEVELOPERS.md#footer)
+* Document and code comment is updated
+
+## Requirements
+
+* [npm](https://www.npmjs.com/)
+* [Golang](https://golang.org/)
+* [golangci-lint](https://github.com/golangci/golangci-lint)
+* [goreleaser](https://goreleaser.com/)
+
+We use node libraries and npm scripts for development.
+Please see [package.json](https://github.com/suzuki-shunsuke/drone-jsonnet-generator/blob/master/package.json) .
+
+## Set up
+
+```
+$ npm run setup
+```
+
+## Lint
+
+```
+# Lint with go vet.
+$ npm run vet
+# Lint with golangci-lint. It takes some time.
+$ npm run lint
+```
+
+## Format codes with gofmt
+
+```
+$ npm run fmt
+```
+
+## Test
+
+```
+$ npm t
+# Test with Drone
+$ npm run ci-local
+```
+
+## Commit Message Format
+
+The commit message format of this project conforms to the [AngularJS Commit Message Format](https://github.com/angular/angular.js/blob/master/DEVELOPERS.md#commits).
+We validate the commit message with git's `commit-msg` hook using [commitlint](http://marionebl.github.io/commitlint/#/) and [husky](https://www.npmjs.com/package/husky), so you have to install them before commit.
+
+```
+$ npm i
+```
+
+## Release
+
+```
+$ npm run tag <tag>
+$ git push
+$ git push --tags
+```
+
+Tag must start with "v".
+`npm run tag` command updates [internal/domain/version.go](https://github.com/suzuki-shunsuke/drone-jsonnet-generator/blob/master/internal/domain/version.go) and commit and creates a tag.
+When we push a tag to GitHub, ci is run and drone-jsonnet-generator is built and uploaded to [GitHub Relases](https://github.com/suzuki-shunsuke/drone-jsonnet-generator/releases) .
+
+## CI
+
+We use [Drone](https://cloud.drone.io/suzuki-shunsuke/drone-jsonnet-generator).
+
+Please see [.drone.yml](https://github.com/suzuki-shunsuke/drone-jsonnet-generator/blob/master/.drone.yml) .

README.md

@@ -1 +1,218 @@
-# drone-jsonnet-generator
+# drone-jsonnet-generator
+
+CLI tool to convert [Drone](https://drone.io/) v0.8x format .drone.yml to v1 format .drone.jsonnet
+
+When you migrate matrix build to multi machine pipeline,
+[jsonnet](https://jsonnet.org) is recommended officially.
+
+https://docs.drone.io/user-guide/pipeline/migrating/
+
+> The above syntax can be quite verbose if you are testing a large number of variations.
+> To simplify your configuration we recommend using jsonnet.
+
+But it is bothersome to convert .drone.yml to .drone.jsonnet manually .
+
+`drone-jsonnet-generator` automates this bothersome tasks.
+
+## Note
+
+* This tool assumes that matrix build is used at source .drone.yml . If you don't use matrix build, you should use `drone convert` instead of this tool
+* This tool can't convert perfectly. You should fix generated .drone.jsonnet . This tool automate 95% tasks. You should fix the following points.
+  * Remove pipeline name's double quotes (ex. `"'GO_VERSION:' + GO_VERSION"` -> `'GO_VERSION:' + GO_VERSION`)
+  * Change matrix build variable `${VARIABLE_NAME}` to jsonnet variable (ex. `"golang:${GO_VERSION}"` -> `"golang:" + GO_VERSION`)
+
+## How to use
+
+Run the command `drone-jsonnet-generator gen` and fix generated .drone.jsonnet manually.
+
+## Example
+
+### Example 1. matrix build without include
+
+source .drone.yml
+
+```yaml
+---
+pipeline:
+  build:
+    image: golang:${GO_VERSION}
+    commands:
+    - echo hello
+services:
+  database:
+    image: ${DATABASE}
+matrix:
+  GO_VERSION:
+  - 1.4
+  - 1.3
+  DATABASE:
+  - mysql:5.5
+  - mysql:6.5
+```
+
+generated .drone.jsonnet
+
+```jsonnet
+local pipeline(GO_VERSION, DATABASE) = {
+  "kind": "pipeline",
+  "name": "'GO_VERSION:' + GO_VERSION + ' DATABASE:' + DATABASE",
+  "platform": {
+    "arch": "amd64",
+    "os": "linux"
+  },
+  "services": [
+    {
+      "image": "${DATABASE}",
+      "name": "database",
+      "pull": "default"
+    }
+  ],
+  "steps": [
+    {
+      "commands": [
+        "echo hello"
+      ],
+      "image": "golang:${GO_VERSION}",
+      "name": "build",
+      "pull": "default"
+    }
+  ]
+};
+
+local array_DATABASE = [
+  "mysql:5.5",
+  "mysql:6.5"
+];
+local array_GO_VERSION = [
+  "1.4",
+  "1.3"
+];
+
+[
+  pipeline(GO_VERSION, DATABASE) for DATABASE in array_DATABASE for GO_VERSION in array_GO_VERSION 
+]
+```
+
+### Example 2. matrix build with include
+
+source .drone.yml
+
+```yaml
+---
+pipeline:
+  build:
+    image: golang:${GO_VERSION}
+    commands:
+    - echo hello
+services:
+  database:
+    image: ${DATABASE}
+matrix:
+  include:
+  - GO_VERSION: 1.4
+    DATABASE: mysql:5.5
+  - GO_VERSION: 1.4
+    DATABASE: mysql:6.5
+  - GO_VERSION: 1.3
+    DATABASE: mysql:5.5
+```
+
+generated .drone.jsonnet
+
+```jsonnet
+local pipeline(GO_VERSION, DATABASE) = {
+  "kind": "pipeline",
+  "name": "'GO_VERSION:' + GO_VERSION + ' DATABASE:' + DATABASE",
+  "platform": {
+    "arch": "amd64",
+    "os": "linux"
+  },
+  "services": [
+    {
+      "image": "${DATABASE}",
+      "name": "database",
+      "pull": "default"
+    }
+  ],
+  "steps": [
+    {
+      "commands": [
+        "echo hello"
+      ],
+      "image": "golang:${GO_VERSION}",
+      "name": "build",
+      "pull": "default"
+    }
+  ]
+};
+
+local args = [
+  {
+    "DATABASE": "mysql:5.5",
+    "GO_VERSION": "1.4"
+  },
+  {
+    "DATABASE": "mysql:6.5",
+    "GO_VERSION": "1.4"
+  },
+  {
+    "DATABASE": "mysql:5.5",
+    "GO_VERSION": "1.3"
+  }
+];
+
+[
+  pipeline(arg.GO_VERSION, arg.DATABASE) for arg in args
+]
+```
+
+## Install
+
+`drone-jsonnet-generator` is written with Golang and binary is distributed at [release page](https://github.com/suzuki-shunsuke/drone-jsonnet-generator/releases), so installation is easy and no dependency is needed.
+
+## Usage
+
+```console
+$ drone-jsonnet-generator --help
+NAME:
+   drone-jsonnet-generator - convert Drone v0.8x format .drone.yml to v1 format .drone.jsonnet
+
+USAGE:
+   drone-jsonnet-generator [global options] command [command options] [arguments...]
+
+VERSION:
+   0.1.0
+
+AUTHOR:
+   suzuki-shunsuke https://github.com/suzuki-shunsuke
+
+COMMANDS:
+     gen  convert Drone v0.8x format .drone.yml to v1 format .drone.jsonnet
+     help, h  Shows a list of commands or help for one command
+
+GLOBAL OPTIONS:
+   --help, -h     show help
+   --version, -v  print the version
+```
+
+```console
+$ drone-jsonnet-generator gen --help
+NAME:
+   drone-jsonnet-generator gen - convert Drone v0.8x format .drone.yml to v1 format .drone.jsonnet
+
+USAGE:
+   drone-jsonnet-generator gen [command options] [arguments...]
+
+OPTIONS:
+   --source value, -s value  source .drone.yml path (default: ".drone.yml")
+   --target value, -t value  target .drone.jsonnet path (default: ".drone.jsonnet")
+   --stdout                  output generated jsonnet to stdout
+```
+
+## Contribution
+
+See [CONTRIBUTING.md](CONTRIBUTING.md) .
+
+## License
+
+[MIT](LICENSE)

commitlint.config.js

@@ -0,0 +1 @@
+module.exports = {extends: ['@commitlint/config-angular']}

package.json

@@ -0,0 +1,17 @@
+{
+  "scripts": {
+    "commitmsg": "commitlint -e $GIT_PARAMS",
+    "precommit": "npm run vet && npm t && npm run lint",
+    "test": "go test ./... -covermode=atomic",
+    "fmt": "bash scripts/fmt.sh",
+    "vet": "go vet ./...",
+    "lint": "golangci-lint run",
+    "c": "bash scripts/coverage.sh",
+    "tag": "bash scripts/tag.sh"
+  },
+  "devDependencies": {
+    "@commitlint/cli": "^7.5.2",
+    "@commitlint/config-angular": "^6.1.3",
+    "husky": "^0.14.3"
+  }
+}

scripts/codecov-test.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+# https://github.com/codecov/example-go#caveat-multiple-files
+
+echo "" > coverage.txt
+
+for d in $(go list ./... | grep -v vendor | grep -v dummy); do
+  go test -race -coverprofile=profile.out -covermode=atomic $d || exit 1
+  if [ -f profile.out ]; then
+    cat profile.out >> coverage.txt
+    rm profile.out
+  fi
+done

scripts/coverage.sh

@@ -0,0 +1,3 @@
+mkdir -p .coverage/$1
+go test ./$1 -coverprofile=.coverage/$1/coverage.txt -covermode=atomic
+go tool cover -html=.coverage/$1/coverage.txt

scripts/drone-local-env

@@ -0,0 +1 @@
+LOCAL=true

scripts/fmt.sh

@@ -0,0 +1,5 @@
+find . -type d -name node_modules -prune -o \
+  -type d -name .git -prune -o \
+  -type d -name vendor -prune -o \
+  -type f -name "*.go" -print \
+  | xargs gofmt -l -s -w

scripts/tag-dummy.sh

@@ -0,0 +1,3 @@
+git fetch
+git tag
+git tag `git tag | tail -n 1`-alpha || exit 1

scripts/tag.sh

@@ -0,0 +1,39 @@
+# Usage
+#   bash scripts/tag.sh v0.3.2
+
+if [ $# -gt 1 ]; then
+  echo "too many arguments" > /dev/stderr
+  echo 'Usage tag.sh $TAG' > /dev/stderr
+  exit 1
+fi
+
+if [ $# -lt 1 ]; then
+  echo "TAG argument is required" > /dev/stderr
+  echo 'Usage tag.sh $TAG' > /dev/stderr
+  exit 1
+fi
+
+TAG=$1
+echo "TAG: $TAG"
+VERSION=${TAG#v}
+
+if [ "$TAG" = "$VERSION" ]; then
+  echo "TAG must start with 'v'"
+  exit 1
+fi
+
+echo "cd `dirname $0`/.."
+cd `dirname $0`/..
+
+echo "create internal/domain/version.go"
+cat << EOS > internal/domain/version.go
+package domain
+
+// Version is the cube's version.
+const Version = "$VERSION"
+EOS
+
+git add internal/domain/version.go
+git commit -m "build: update version to $TAG"
+echo "git tag $TAG"
+git tag $TAG