Merged release/v1.13.0 into master

.travis.yml

@@ -1,8 +1,37 @@
-language: go
+sudo: required
 
-go:
-    - 1.6
+services:
+  - docker
 
-before_script:
-
-script: make test
+before_install:
+  - sudo apt-get update
+  - sudo apt-get install -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold" -y --force-yes -q docker-engine
+  - wget https://github.com/grammarly/rocker/releases/download/1.2.0/rocker-1.2.0-linux_amd64.tar.gz -O /tmp/rocker.tar.gz 
+  - sudo tar -xvzf  /tmp/rocker.tar.gz -C /usr/local/bin && sudo chmod +x /usr/local/bin/rocker
+  - sudo mkdir -m 777 -p /build/amd64 /build/arm
+
+script:
+  - if git describe --contains ${TRAVIS_COMMIT} &>/dev/null; then export VERSIONARGS="-var DOCKERIMAGE_VERSION=`git describe --contains ${TRAVIS_COMMIT}`"; else unset VERSIONARGS; fi
+  - rocker build --no-cache ${VERSIONARGS} -var GIT_COMMIT=${TRAVIS_COMMIT} -var OUTPUTDIR=/build/amd64 -var ARCH=amd64 .
+  - rocker build --no-cache ${VERSIONARGS} -var GIT_COMMIT=${TRAVIS_COMMIT} -var OUTPUTDIR=/build/arm -var ARCH=arm . 
+  - sudo mv /build/amd64/dnsdock /build/dnsdock.amd64
+  - sudo mv /build/arm/dnsdock /build/dnsdock.arm
+
+deploy:
+  - provider: releases
+    skip_cleanup: true
+    api-key:
+       secure: $GITHUB_TOKEN
+    file:
+      - /build/dnsdock.amd64
+      - /build/dnsdock.arm
+    on:
+      tags: true
+  - provider: script
+    script:  rocker build --auth $DOCKER_USER:$DOCKER_PASS --push rocker build -var Arch=arm -var ${VERSIONARGS} .
+    on:
+      tags: true
+  - provider: script
+    script:  rocker build --auth $DOCKER_USER:$DOCKER_PASS --push rocker build -var Arch=amd64 -var ${VERSIONARGS} .
+    on:
+      tags: true

PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,12 @@
+## Before creating your PR, execute the following command:
+$> go vet
+$> go lint
+$> go fmt
+$> go build
+$> go test
+
+## PR source branches shall have the following name: feature/<PR_NAME>
+
+## PR destination branch shall be develop
+
+## Any PR not respecting those rules won't be merge and will be closed after a few weeks if not updated.

Rockerfile

@@ -0,0 +1,83 @@
+# This file is part of DNSDock
+# MIT
+#
+# Copyright (C) 2014 Tõnis Tiigi <[email protected]>
+# 
+# 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.
+
+{{$GOLANG_VERSION := "1.6.2-r4"}}
+{{$ARCH:= (or .ARCH "amd64")}}
+{{$GIT_COMMIT:= (or .GIT_COMMIT "develop")}}
+{{$DOCKERIMAGE_VERSION:= (or .DOCKERIMAGE_VERSION "develop")}}
+{{$SRCDIR:= (or .SRCDIR ".")}}
+
+# build image
+FROM alpine
+
+RUN apk update
+RUN apk upgrade
+RUN apk add go>{{$GOLANG_VERSION}} go-tools>{{$GOLANG_VERSION}} git
+
+ENV GOPATH /go
+ENV CGO_ENABLED 0
+ENV PATH ${PATH}:/go/bin
+ENV CGO_ENABLED=0
+
+RUN go get -v github.com/tools/godep
+
+
+{{if .SRCDIR}}
+  MOUNT {{$SRCDIR}}:/go/src/github.com/tonistiigi/dnsdock
+{{else}}
+  RUN go get github.com/tonistiigi/dnsdock
+  WORKDIR /go/src/github.com/tonistiigi/dnsdock
+  RUN git checkout {{$GIT_COMMIT}}
+{{end}}
+
+{{if .OUTPUTDIR}}
+  MOUNT {{.OUTPUTDIR}}:/tmp/output
+{{else}}
+  RUN mkdir /tmp/output
+{{end}}
+
+WORKDIR /go/src/github.com/tonistiigi/dnsdock
+RUN godep restore
+RUN go get -u github.com/golang/lint/golint
+
+ENV GOARCH={{$ARCH}}
+WORKDIR /go/src/github.com/tonistiigi/dnsdock/src
+ATTACH sh
+RUN go build -o /tmp/output/dnsdock -ldflags "-X main.version=$(if version=$(git describe --contains HEAD 2>/dev/null); then echo $version; else echo "dev"; fi)"
+RUN golint -set_exit_status
+{{if eq $ARCH "amd64"}}
+RUN go vet
+RUN go test
+{{end}}
+EXPORT /tmp/output/dnsdock ./dnsdock
+
+# run image
+{{ if eq $ARCH "amd64" }}
+FROM alpine
+{{ else }}
+FROM easypi/alpine-arm
+{{ end }}
+IMPORT ./dnsdock /bin/dnsdock
+ENTRYPOINT ["dnsdock"]
+TAG tonistiigi/dnsdock:{{$ARCH}}-{{$DOCKERIMAGE_VERSION}}
+PUSH tonistiigi/dnsdock:{{$ARCH}}-{{$DOCKERIMAGE_VERSION}}

readme.md

@@ -37,8 +37,32 @@ specific tag that was used when the container was created. This means that if a
 new version of an image comes out and untags the image that your container
 still uses, the DNS requests for this old container still work.
 
-#### Usage
+#### Build
+
+##### Building without docker:
+
+Install a golang development environment on your host and type the following commands:
+```
+export GOPATH=/tmp/go
+export PATH=${PATH}:${GOPATH}/bin
+go get -v github.com/tools/godep
+go get -d -v https://github.com/tonistiigi/dnsdock
+cd ${GOPATH}/src/github.com/tonistiigi/dnsdock
+godep restore
+cd ${GOPATH}/src/github.com/tonistiigi/dnsdock/src
+go build -o ${GOPATH}/bin/dnsdock
+```
 
+##### Building with docker:
+
+To build with docker you need [rocker](https://github.com/grammarly/rocker). Check the
+website to install it and type the following commands:
+```
+if git describe --contains HEAD &>/dev/null; then export VERSIONARGS="-var DNSDockVersion=`git describe --contains HEAD`"; else unset VERSIONARGS; fi
+rocker build -var Arch=[amd64|arm] ${VERSIONARGS} -var OutputDir=<outputdir> .
+```
+
+#### Usage
 Dnsdock connects to Docker Remote API and keeps an up to date list of running
 containers. If a DNS request matches some of the containers their local IP
 addresses are returned.

src/config.go

@@ -0,0 +1,86 @@
+package main
+
+import (
+	"os"
+	"strings"
+)
+
+// Domain represents a domain 
+type Domain []string
+
+// NewDomain creates a new domain
+func NewDomain(s string) Domain {
+	s = strings.Replace(s, "..", ".", -1)
+	if s[:1] == "." {
+		s = s[1:]
+	}
+	if s[len(s)-1:] == "." {
+		s = s[:len(s)-1]
+	}
+	return Domain(strings.Split(s, "."))
+}
+
+func (d *Domain) String() string {
+	return strings.Join([]string(*d), ".")
+}
+
+// type that knows how to parse CSV strings and store the values in a slice
+type nameservers []string
+
+func (n *nameservers) String() string {
+	return strings.Join(*n, " ")
+}
+
+// accumulate the CSV string of nameservers
+func (n *nameservers) Set(value string) error {
+	*n = nil
+	for _, ns := range strings.Split(value, ",") {
+		ns = strings.Trim(ns, " ")
+		*n = append(*n, ns)
+	}
+
+	return nil
+}
+
+// Config contains DNSDock configuration
+type Config struct {
+	nameserver  nameservers
+	dnsAddr     string
+	domain      Domain
+	dockerHost  string
+	tlsVerify   bool
+	tlsCaCert   string
+	tlsCert     string
+	tlsKey      string
+	verbose     bool
+	httpAddr    string
+	ttl         int
+	createAlias bool
+}
+
+// NewConfig creates a new config
+func NewConfig() *Config {
+	dockerHost := os.Getenv("DOCKER_HOST")
+	if len(dockerHost) == 0 {
+		dockerHost = "unix:///var/run/docker.sock"
+	}
+	tlsVerify := len(os.Getenv("DOCKER_TLS_VERIFY")) != 0
+	dockerCerts := os.Getenv("DOCKER_CERT_PATH")
+	if len(dockerCerts) == 0 {
+		dockerCerts = os.Getenv("HOME") + "/.docker"
+	}
+
+	return &Config{
+		nameserver: nameservers{"8.8.8.8:53"},
+		dnsAddr:     ":53",
+		domain:      NewDomain("docker"),
+		dockerHost:  dockerHost,
+		httpAddr:    ":80",
+		createAlias: false,
+		tlsVerify:   tlsVerify,
+		tlsCaCert:   dockerCerts + "/ca.pem",
+		tlsCert:     dockerCerts + "/cert.pem",
+		tlsKey:      dockerCerts + "/key.pem",
+	}
+
+}