Init

- Go 1.14.2
- Mage 1.9.0
- GolangCI-Lint 1.26.0
- Add Visual Studio Code with Remote Containers support
- Add GitHub Actions workflow using Docker Compose

.devcontainer/devcontainer.json

@@ -0,0 +1,27 @@
+// For format details, see https://aka.ms/vscode-remote/devcontainer.json or
+// https://github.com/microsoft/vscode-dev-containers
+{
+	"name": "Go",
+	"context": "..",
+	"dockerFile": "../Dockerfile",
+	"runArgs": [
+		"--cap-add=SYS_PTRACE",
+		"--security-opt",
+		"seccomp=unconfined"
+	],
+	// Set *default* container specific settings.json values on container create.
+	"settings": {
+		"terminal.integrated.shell.linux": "/bin/bash",
+		"go.gopath": "/go"
+	},
+	// Add the IDs of extensions you want installed when the container is created.
+	"extensions": [
+		"ms-vscode.go"
+	],
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	// "forwardPorts": [],
+	// Use 'postCreateCommand' to run commands after the container is created.
+	"postCreateCommand": "apt-get update && apt-get install -y git"
+	// Uncomment to connect as a non-root user. See https://aka.ms/vscode-remote/containers/non-root.
+	// "remoteUser": "vscode"
+}

.gitattributes

@@ -0,0 +1,3 @@
+* text=auto eol=lf
+*.{cmd,[cC][mM][dD]} text eol=crlf
+*.{bat,[bB][aA][tT]} text eol=crlf

.github/workflows/build.yml

@@ -0,0 +1,9 @@
+name: build
+on: push
+jobs:
+  docker-compose:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Build
+        run: docker-compose up --abort-on-container-exit

.gitignore

@@ -0,0 +1,26 @@
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+
+# Visual Studio Code files
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+*.code-workspace
+
+# Local History for Visual Studio Code
+.history/

.golangci.yml

@@ -0,0 +1,68 @@
+linters-settings:
+  goimports:
+    local-prefixes: github.com/golang-templates/library
+  golint:
+    min-confidence: 0
+  misspell:
+    locale: US
+  nolintlint:
+    allow-leading-space: false # don't require machine-readable nolint directives (i.e. with no leading space)
+    allow-unused: false # report any unused nolint directives
+    require-explanation: true # don't require an explanation for nolint directives
+    require-specific: false # don't require nolint directives to be specific about which linter is being skipped
+
+linters:
+  # please, do not use `enable-all`: it's deprecated and will be removed soon.
+  # inverted configuration with `enable-all` and `disable` is not scalable during updates of golangci-lint
+  disable-all: true
+  enable:
+    # default linters:
+    - deadcode
+    - errcheck
+    - gosimple
+    - govet
+    - ineffassign
+    - staticcheck
+    - structcheck
+    - typecheck
+    - unused
+    - varcheck
+    # linters disabled by default:
+    - asciicheck
+    - bodyclose
+    - depguard
+    - dogsled
+    - dupl
+    - funlen
+    - gochecknoglobals
+    - gochecknoinits
+    - gocognit
+    - goconst
+    - gocritic
+    - gocyclo
+    - godot
+    - godox
+    - goerr113
+    - gofmt
+    - goimports
+    - golint
+    - gomnd
+    - gomodguard
+    - goprintffuncname
+    - gosec
+    - interfacer
+    - lll
+    - maligned
+    - misspell
+    - nakedret
+    - nestif
+    - nolintlint
+    - prealloc
+    - rowserrcheck
+    - scopelint
+    - stylecheck
+    - testpackage
+    - unconvert
+    - unparam
+    - whitespace
+    - wsl

.vscode/extensions.json

@@ -0,0 +1,5 @@
+{
+    "recommendations": [
+        "ms-vscode.go"
+    ]
+}

.vscode/launch.json

@@ -0,0 +1,17 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Launch",
+            "type": "go",
+            "request": "launch",
+            "mode": "auto",
+            "program": "${fileDirname}",
+            "env": {},
+            "args": []
+        }
+    ]
+}

.vscode/settings.json

@@ -0,0 +1,9 @@
+{
+    // gopls
+    "go.useLanguageServer": true,
+    // golangci-lint  
+    "go.lintTool": "golangci-lint",
+    "go.lintFlags": [
+        "--fast"
+    ]
+}

.vscode/tasks.json

@@ -0,0 +1,43 @@
+{
+    // See https://go.microsoft.com/fwlink/?LinkId=733558
+    // for the documentation about the tasks.json format
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "All",
+            "type": "shell",
+            "command": "mage -v all",
+            "problemMatcher": [
+                "$go"
+            ],
+            "group": "build"
+        },
+        {
+            "label": "Build",
+            "type": "shell",
+            "command": "mage -v build",
+            "problemMatcher": [
+                "$go"
+            ],
+            "group": "build"
+        },
+        {
+            "label": "Lint",
+            "type": "shell",
+            "command": "mage -v lint",
+            "problemMatcher": [
+                "$go"
+            ],
+            "group": "build"
+        },
+        {
+            "label": "Test",
+            "type": "shell",
+            "command": "mage -v test",
+            "problemMatcher": [
+                "$go"
+            ],
+            "group": "build"
+        }
+    ]
+}

Dockerfile

@@ -0,0 +1,6 @@
+# Go
+FROM golang:1.14.2
+# mage
+RUN GO111MODULE=on go get github.com/magefile/[email protected]
+# golangci-lint
+RUN curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v1.26.0

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2020 Robert Pająk
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -0,0 +1,53 @@
+[![Build Status](https://github.com/golang-templates/library/workflows/build/badge.svg)](https://github.com/golang-templates/library/actions?query=workflow%3Abuild)
+[![GoDoc](https://godoc.org/github.com/golang-templates/library?status.svg)](https://godoc.org/github.com/golang-templates/library)
+[![GitHub Release](https://img.shields.io/github/release/golang-templates/library.svg)](https://github.com/golang-templates/library/releases)
+[![Go Report Card](https://goreportcard.com/badge/github.com/golang-templates/library)](https://goreportcard.com/report/github.com/golang-templates/library)
+
+# Go Library Template
+
+This is GitHub project template for a Go library. It has been created for ease-of-use for anyone who wants to:
+
+- quickly get into Go without losing too much time on environment setup,
+- create a new repoisitory with basic Continous Integration,
+- write Go code on Linux, MacOS, Windows,
+- use free tools.
+
+It includes:
+
+- editor config: [Visual Studio Code](https://code.visualstudio.com)  with [Go](https://code.visualstudio.com/docs/languages/go) and [Remote Container](https://code.visualstudio.com/docs/remote/containers) support,
+- dependency management: [Go Modules](https://github.com/golang/go/wiki/Modules),
+- linter: [GolangCI-Lint](https://github.com/golangci/golangci-lint),
+- build automation: [Mage](https://magefile.org), [Docker](https://docs.docker.com/engine), [Docker Compose](https://docs.docker.com/compose), [GitHub Actions](https://github.com/features/actions).
+
+`Star` this project if you find it valuable and worth maintaining.
+
+## Usage
+
+1. Click the `Use this template` button (alt. clone or download this repository).
+1. Replace all occurences of `golang-templates/library` to `your_org/repo_name` in all files.
+1. Change [LICENSE](LICENSE) and [README.md](README.md).
+
+### Setup Development Environment
+
+Take notice that this project is build in a way that gives the developer a lot of freedom on the development environment setup. Below you can find proposals when using Visual Studio Code. 
+
+- **Bare metal:** Install Go, Visual Studio Code, Mage and GolangCI-Lint (see [Dockerfile](Dockerfile) for Mage and GolangCI-Lint installation commands).
+- **Containers:** Install Docker, Visual Studio Code with Remote - Container extension. [Instructions](https://code.visualstudio.com/docs/remote/containers).
+- **Remote via SSH**: [Instructions](https://code.visualstudio.com/docs/remote/ssh).
+
+### Build
+
+- Terminal: `mage -v all`.
+- Visual Studio Code: `Terminal` → `Run Build Task... (CTRL+ALT+B)` → Select `All`.
+- Terminal: `docker-compose up --abort-on-container-exit`. This command is executed by CI build (GitHub Action workflow).
+
+### Maintainance
+
+1. `Watch` this project to get notified about new releases, issues, etc.
+1. Update Go, Mage and GolangCI-Lint version in [Dockerfile](Dockerfile). Take notice that when working on bare metal or via SSH, then you should also to do it manually on your machine.
+1. Configure linters via [.golangci.yml](.golangci.yml).
+1. Develop tasks/targets in [magefile.go](magefile.go) and [.vscode/tasks.json](.vscode/tasks.json).
+
+## Contributing
+
+Simply create an issue or a pull request.

docker-compose.yml

@@ -0,0 +1,10 @@
+version: "3.7"
+services:
+  builder:
+    container_name: builder
+    build: .
+    working_dir: /app
+    command: mage -v all
+    volumes:
+        - $PWD:/app
+

foo.go

@@ -0,0 +1,7 @@
+// Package library has a dummy function covered by a unit test.
+package library
+
+// Foo returns "Bar".
+func Foo() string {
+	return "Bar"
+}

foo_test.go

@@ -0,0 +1,14 @@
+package library_test
+
+import (
+	"testing"
+
+	. "github.com/golang-templates/library"
+)
+
+func TestFoo(t *testing.T) {
+	want := "Bar"
+	if got := Foo(); got != want {
+		t.Errorf("Foo() = %v, want %v", got, want)
+	}
+}

go.mod

@@ -0,0 +1,5 @@
+module github.com/golang-templates/library
+
+go 1.14
+
+require github.com/magefile/mage v1.9.0

go.sum

@@ -0,0 +1,2 @@
+github.com/magefile/mage v1.9.0 h1:t3AU2wNwehMCW97vuqQLtw6puppWXHO+O2MHo5a50XE=
+github.com/magefile/mage v1.9.0/go.mod h1:z5UZb/iS3GoOSn0JgWuiw7dxlurVYTu+/jHXqQg881A=

magefile.go

@@ -0,0 +1,28 @@
+//+build mage
+
+package main
+
+import (
+	"github.com/magefile/mage/mg"
+	"github.com/magefile/mage/sh"
+)
+
+// All full build: build, lint, test.
+func All() {
+	mg.SerialDeps(Build, Lint, Test)
+}
+
+// Build go build.
+func Build() error {
+	return sh.RunV("go", "build", "./...")
+}
+
+// Lint golangci-lint.
+func Lint() error {
+	return sh.RunV("golangci-lint", "run")
+}
+
+// Test go test with race detector and code covarage.
+func Test() error {
+	return sh.RunV("go", "test", "-race", "-covermode=atomic")
+}