Add ellipses, DNS support (#4)

- add support for Docker builds
- add support for build versions
- add support for CI/CD builds

.github/workflows/go.yml

@@ -0,0 +1,35 @@
+name: Go
+
+on:
+  pull_request:
+    branches:
+    - master
+  push:
+    branches:
+    - master
+
+jobs:
+  build:
+    name: Test on Go ${{ matrix.go-version }} and ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        go-version: [1.13.x, 1.14.x]
+        os: [ubuntu-latest]
+    steps:
+      - name: Set up Go ${{ matrix.go-version }} on ${{ matrix.os }}
+        uses: actions/setup-go@v1
+        with:
+          go-version: ${{ matrix.go-version }}
+        id: go
+
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v1
+
+      - name: Build on ${{ matrix.os }}
+        env:
+          GO111MODULE: on
+        run: |
+          curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v1.21.0
+          $(go env GOPATH)/bin/golangci-lint run --timeout=5m --config ./.golangci.yml
+          go test -v -race ./...

.golangci.yml

@@ -0,0 +1,16 @@
+linters-settings:
+  misspell:
+    locale: US
+
+linters:
+  disable-all: true
+  enable:
+    - typecheck
+    - goimports
+    - misspell
+    - govet
+    - golint
+    - ineffassign
+    - gosimple
+    - deadcode
+    - structcheck

.goreleaser.yml

@@ -1,28 +1,72 @@
 # This is an example goreleaser.yaml file with some sane defaults.
 # Make sure to check the documentation at http://goreleaser.com
+project_name: sidekick
+
 before:
   hooks:
     # you may remove this if you don't use vgo
     - go mod tidy
-    # you may remove this if you don't need go generate
-    - go generate ./...
 builds:
-- env:
-  - CGO_ENABLED=0
+  -
+    goos:
+      - freebsd
+      - windows
+      - linux
+      - darwin
+    goarch:
+      - amd64
+      - arm64
+    env:
+      - CGO_ENABLED=0
+    ldflags:
+     - -s -w -X github.com/minio/sidekick.ReleaseTag={{.Tag}} -X github.com/minio/sidekick.CommitID={{.FullCommit}} -X github.com/minio/sidekick.Version={{.Version}} -X github.com/minio/sidekick.ShortCommitID={{.ShortCommit}} -X github.com/minio/sidekick.ReleaseTime={{.Date}}
 archives:
-- replacements:
-    darwin: Darwin
-    linux: Linux
-    windows: Windows
-    386: i386
-    amd64: x86_64
+  -
+    replacements:
+      darwin: Darwin
+      linux: Linux
+      windows: Windows
+      freebsd: FreeBSD
+      amd64: x86_64
+    format_overrides:
+      - goos: windows
+        format: zip
+    files:
+      - README.md
+      - LICENSE
+      - sidekick_logo.png
 checksum:
   name_template: 'checksums.txt'
 snapshot:
-  name_template: "{{ .Tag }}-next"
+  name_template: 'snapshot-{{ time "2006-01-02" }}'
 changelog:
   sort: asc
   filters:
     exclude:
     - '^docs:'
     - '^test:'
+nfpms:
+  -
+    vendor: MinIO, Inc.
+    homepage: https://github.com/minio/sidekick
+    maintainer: MinIO <[email protected]>
+    description: sidekick is a load-balancer run as a sidecar
+    license: GNU Affero General Public License v3.0
+    formats:
+      - deb
+      - rpm
+    replacements:
+      darwin: Darwin
+      linux: Linux
+      freebsd: FreeBSD
+      amd64: x86_64
+dockers:
+  -
+    # GOOS of the built binary that should be used.
+    goos: linux
+    # GOARCH of the built binary that should be used.
+    goarch: amd64
+    dockerfile: Dockerfile.release
+    image_templates:
+      - "minio/sidekick:{{ .Tag }}"
+      - "minio/sidekick:latest"

Dockerfile

@@ -0,0 +1,22 @@
+FROM golang:1.13.8
+
+ADD go.mod /go/src/github.com/minio/sidekick/go.mod
+ADD go.sum /go/src/github.com/minio/sidekick/go.sum
+WORKDIR /go/src/github.com/minio/sidekick/
+# Get dependencies - will also be cached if we won't change mod/sum
+RUN go mod download
+
+ADD . /go/src/github.com/minio/sidekick/
+WORKDIR /go/src/github.com/minio/sidekick/
+
+ENV CGO_ENABLED=0
+
+RUN go build -ldflags '-w -s' -a -o sidekick .
+
+FROM scratch
+MAINTAINER MinIO Development "[email protected]"
+EXPOSE 8080
+
+COPY --from=0 /go/src/github.com/minio/sidekick/sidekick /sidekick
+
+ENTRYPOINT ["/sidekick"]

Dockerfile.release

@@ -0,0 +1,5 @@
+FROM scratch
+MAINTAINER MinIO Development "[email protected]"
+EXPOSE 8080
+COPY sidekick /sidekick
+ENTRYPOINT ["/sidekick"]

README.md

@@ -1,16 +1,19 @@
 ![sidekick](sidekick_logo.png)
 
-# Sidekick
-Sidekick is a high-performance sidecar load-balancer. By attaching a tiny load balancer as a sidecar to each of the client application processes, you can eliminate the centralized loadbalancer bottleneck and DNS failover management.  Sidekick automatically avoids sending traffic to the failed servers by checking their health via the readiness API and HTTP error returns.
+*sidekick* is a high-performance sidecar load-balancer. By attaching a tiny load balancer as a sidecar to each of the client application processes, you can eliminate the centralized loadbalancer bottleneck and DNS failover management. *sidekick* automatically avoids sending traffic to the failed servers by checking their health via the readiness API and HTTP error returns.
 
-## Usage
+# Download
+[Download Binary Releases](https://github.com/minio/sidekick/releases) for various platforms.
+
+# Usage
 
 ```
 USAGE:
   sidekick [FLAGS] ENDPOINTs...
+  sidekick [FLAGS] ENDPOINT{1...N}
 
 FLAGS:
-  --adsdress value, -a value         listening address for sidekick (default: ":8080")
+  --address value, -a value          listening address for sidekick (default: ":8080")
   --health-path value, -p value      health check path (default: "/health/ready")
   --health-duration value, -d value  health check duration (default: 5s)
   --insecure, -i                     disable TLS certificate verification
@@ -29,7 +32,7 @@ $ sidekick http://myapp.myorg.dom
 
 2. Load balance across 4 MinIO Servers (http://minio1:9000 to http://minio4:9000)
 ```
-$ sidekick --health-path=/minio/health/ready http://minio1:9000 http://minio2:9000 http://minio3:9000 http://minio4:9000
+$ sidekick --address :8000 http://minio{1...4}:9000
 ```
 
 3. Load balance across 16 MinIO Servers (http://minio1:9000 to http://minio16:9000)

build-constants.go

@@ -0,0 +1,21 @@
+// Copyright (c) 2020 MinIO, Inc.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.package main
+
+package main
+
+var (
+	// Version - the version being released (v prefix stripped)
+	Version = "(dev)"
+)

go.mod

@@ -2,4 +2,7 @@ module github.com/minio/sidekick
 
 go 1.13
 
-require github.com/minio/cli v1.22.0
+require (
+	github.com/minio/cli v1.22.0
+	github.com/minio/minio v0.0.0-20200306223245-52873ac3a39e
+)