add nomad plugin

Author: malmz

.dockerignore

@@ -1,2 +1,18 @@
-*
-!coredns
+*.md
+*.yml
+*.yaml
+Makefile*
+Dockerfile*
+
+.circleci
+.github
+.dockerignore
+.gitignore
+.yamllint
+man
+notes
+test
+CODEOWNERS
+LICENSE
+coredns
+

Dockerfile.build

@@ -0,0 +1,17 @@
+FROM golang:1.20.1 as build
+WORKDIR /app
+
+COPY ["go.mod", "go.sum", "./"]
+
+RUN go mod download
+
+COPY . .
+
+RUN go build -o ./coredns
+
+FROM gcr.io/distroless/base-debian11:latest
+
+COPY --from=build /app/coredns /
+
+EXPOSE 53 53/udp
+ENTRYPOINT ["/coredns"]

core/dnsserver/zdirectives.go

@@ -46,11 +46,7 @@ var Directives = []string{
 	"template",
 	"transfer",
 	"hosts",
-	"route53",
-	"azure",
-	"clouddns",
-	"k8s_external",
-	"kubernetes",
+	"nomad",
 	"file",
 	"auto",
 	"secondary",

core/plugin/zplugin.go

@@ -9,13 +9,11 @@ import (
 	_ "github.com/coredns/coredns/plugin/any"
 	_ "github.com/coredns/coredns/plugin/auto"
 	_ "github.com/coredns/coredns/plugin/autopath"
-	_ "github.com/coredns/coredns/plugin/azure"
 	_ "github.com/coredns/coredns/plugin/bind"
 	_ "github.com/coredns/coredns/plugin/bufsize"
 	_ "github.com/coredns/coredns/plugin/cache"
 	_ "github.com/coredns/coredns/plugin/cancel"
 	_ "github.com/coredns/coredns/plugin/chaos"
-	_ "github.com/coredns/coredns/plugin/clouddns"
 	_ "github.com/coredns/coredns/plugin/debug"
 	_ "github.com/coredns/coredns/plugin/dns64"
 	_ "github.com/coredns/coredns/plugin/dnssec"
@@ -30,8 +28,6 @@ import (
 	_ "github.com/coredns/coredns/plugin/header"
 	_ "github.com/coredns/coredns/plugin/health"
 	_ "github.com/coredns/coredns/plugin/hosts"
-	_ "github.com/coredns/coredns/plugin/k8s_external"
-	_ "github.com/coredns/coredns/plugin/kubernetes"
 	_ "github.com/coredns/coredns/plugin/loadbalance"
 	_ "github.com/coredns/coredns/plugin/local"
 	_ "github.com/coredns/coredns/plugin/log"
@@ -46,7 +42,6 @@ import (
 	_ "github.com/coredns/coredns/plugin/reload"
 	_ "github.com/coredns/coredns/plugin/rewrite"
 	_ "github.com/coredns/coredns/plugin/root"
-	_ "github.com/coredns/coredns/plugin/route53"
 	_ "github.com/coredns/coredns/plugin/secondary"
 	_ "github.com/coredns/coredns/plugin/sign"
 	_ "github.com/coredns/coredns/plugin/template"
@@ -57,4 +52,5 @@ import (
 	_ "github.com/coredns/coredns/plugin/tsig"
 	_ "github.com/coredns/coredns/plugin/view"
 	_ "github.com/coredns/coredns/plugin/whoami"
+	_ "github.com/mr-karan/coredns-nomad"
 )

go.mod

@@ -21,6 +21,7 @@ require (
 	github.com/infobloxopen/go-trees v0.0.0-20200715205103-96a057b8dfb9
 	github.com/matttproud/golang_protobuf_extensions v1.0.4
 	github.com/miekg/dns v1.1.62
+	github.com/mr-karan/coredns-nomad v0.0.0-20230105084401-d4544c11e248
 	github.com/opentracing/opentracing-go v1.2.0
 	github.com/openzipkin-contrib/zipkin-go-opentracing v0.5.0
 	github.com/openzipkin/zipkin-go v0.4.3
@@ -105,9 +106,14 @@ require (
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/googleapis/enterprise-certificate-proxy v0.3.4 // indirect
 	github.com/googleapis/gax-go/v2 v2.14.0 // indirect
+	github.com/gorilla/websocket v1.5.0 // indirect
+	github.com/hashicorp/cronexpr v1.1.1 // indirect
+	github.com/hashicorp/go-cleanhttp v0.5.2 // indirect
+	github.com/hashicorp/go-rootcerts v1.0.2 // indirect
 	github.com/hashicorp/go-secure-stdlib/parseutil v0.1.7 // indirect
 	github.com/hashicorp/go-secure-stdlib/strutil v0.1.2 // indirect
 	github.com/hashicorp/go-sockaddr v1.0.2 // indirect
+	github.com/hashicorp/nomad/api v0.0.0-20230102161616-d71d7fd056a5 // indirect
 	github.com/imdario/mergo v0.3.12 // indirect
 	github.com/jmespath/go-jmespath v0.4.0 // indirect
 	github.com/josharian/intern v1.0.0 // indirect

go.sum

@@ -109,6 +109,8 @@ github.com/dimchansky/utfbom v1.1.1 h1:vV6w1AhK4VMnhBno/TPVCoK9U/LP0PkLCS9tbxHdi
 github.com/dimchansky/utfbom v1.1.1/go.mod h1:SxdoEBH5qIqFocHMyGOXVAybYJdr71b1Q/j0mACtrfE=
 github.com/dnstap/golang-dnstap v0.4.0 h1:KRHBoURygdGtBjDI2w4HifJfMAhhOqDuktAokaSa234=
 github.com/dnstap/golang-dnstap v0.4.0/go.mod h1:FqsSdH58NAmkAvKcpyxht7i4FoBjKu8E4JUPt8ipSUs=
+github.com/docker/go-units v0.5.0 h1:69rxXcBk27SvSaaxTtLh/8llcHD8vYHT7WSdRZ/jvr4=
+github.com/docker/go-units v0.5.0/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=
 github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
 github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
 github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
@@ -198,17 +200,27 @@ github.com/googleapis/enterprise-certificate-proxy v0.3.4 h1:XYIDZApgAnrN1c855gT
 github.com/googleapis/enterprise-certificate-proxy v0.3.4/go.mod h1:YKe7cfqYXjKGpGvmSg28/fFvhNzinZQm8DGnaburhGA=
 github.com/googleapis/gax-go/v2 v2.14.0 h1:f+jMrjBPl+DL9nI4IQzLUxMq7XrAqFYB7hBPqMNIe8o=
 github.com/googleapis/gax-go/v2 v2.14.0/go.mod h1:lhBCnjdLrWRaPvLWhmc8IS24m9mr07qSYnHncrgo+zk=
+github.com/gorilla/websocket v1.5.0 h1:PPwGk2jz7EePpoHN/+ClbZu8SPxiqlu12wZP/3sWmnc=
+github.com/gorilla/websocket v1.5.0/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
 github.com/grpc-ecosystem/grpc-opentracing v0.0.0-20180507213350-8e809c8a8645 h1:MJG/KsmcqMwFAkh8mTnAwhyKoB+sTAnY4CACC110tbU=
 github.com/grpc-ecosystem/grpc-opentracing v0.0.0-20180507213350-8e809c8a8645/go.mod h1:6iZfnjpejD4L/4DwD7NryNaJyCQdzwWwH2MWhCA90Kw=
+github.com/hashicorp/cronexpr v1.1.1 h1:NJZDd87hGXjoZBdvyCF9mX4DCq5Wy7+A/w+A7q0wn6c=
+github.com/hashicorp/cronexpr v1.1.1/go.mod h1:P4wA0KBl9C5q2hABiMO7cp6jcIg96CDh1Efb3g1PWA4=
 github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
+github.com/hashicorp/go-cleanhttp v0.5.2 h1:035FKYIWjmULyFRBKPs8TBQoi0x6d9G4xc9neXJWAZQ=
+github.com/hashicorp/go-cleanhttp v0.5.2/go.mod h1:kO/YDlP8L1346E6Sodw+PrpBSV4/SoxCXGY6BqNFT48=
 github.com/hashicorp/go-multierror v1.0.0/go.mod h1:dHtQlpGsu+cZNNAkkCN/P3hoUDHhCYQXV3UM06sGGrk=
+github.com/hashicorp/go-rootcerts v1.0.2 h1:jzhAVGtqPKbwpyCPELlgNWhE1znq+qwJtW5Oi2viEzc=
+github.com/hashicorp/go-rootcerts v1.0.2/go.mod h1:pqUvnprVnM5bf7AOirdbb01K4ccR319Vf4pU3K5EGc8=
 github.com/hashicorp/go-secure-stdlib/parseutil v0.1.7 h1:UpiO20jno/eV1eVZcxqWnUohyKRe1g8FPV/xH1s/2qs=
 github.com/hashicorp/go-secure-stdlib/parseutil v0.1.7/go.mod h1:QmrqtbKuxxSWTN3ETMPuB+VtEiBJ/A9XhoYGv8E1uD8=
 github.com/hashicorp/go-secure-stdlib/strutil v0.1.1/go.mod h1:gKOamz3EwoIoJq7mlMIRBpVTAUn8qPCrEclOKKWhD3U=
 github.com/hashicorp/go-secure-stdlib/strutil v0.1.2 h1:kes8mmyCpxJsI7FTwtzRqEy9CdjCtrXrXGuOpxEA7Ts=
 github.com/hashicorp/go-secure-stdlib/strutil v0.1.2/go.mod h1:Gou2R9+il93BqX25LAKCLuM+y9U2T4hlwvT1yprcna4=
 github.com/hashicorp/go-sockaddr v1.0.2 h1:ztczhD1jLxIRjVejw8gFomI1BQZOe2WoVOu0SyteCQc=
 github.com/hashicorp/go-sockaddr v1.0.2/go.mod h1:rB4wwRAUzs07qva3c5SdrY/NEtAUjGlgmH/UkBUC97A=
+github.com/hashicorp/nomad/api v0.0.0-20230102161616-d71d7fd056a5 h1:ZD6Gn0HQI7y/MDaMs02KffIIViWR4sR1TzEHOvBs/5k=
+github.com/hashicorp/nomad/api v0.0.0-20230102161616-d71d7fd056a5/go.mod h1:EM/2XaEwHziSB4NdWZ6MfE65TcvgWwVawOUBT8kVRqE=
 github.com/imdario/mergo v0.3.12 h1:b6R2BslTbIEToALKP7LxUvijTsNI9TAe80pLWN2g/HU=
 github.com/imdario/mergo v0.3.12/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
 github.com/infobloxopen/go-trees v0.0.0-20200715205103-96a057b8dfb9 h1:w66aaP3c6SIQ0pi3QH1Tb4AMO3aWoEPxd1CNvLphbkA=
@@ -250,6 +262,8 @@ github.com/miekg/dns v1.1.62/go.mod h1:mvDlcItzm+br7MToIKqkglaGhlFMHJ9DTNNWONWXb
 github.com/mitchellh/cli v1.0.0/go.mod h1:hNIlj7HEI86fIcpObd7a0FcrxTWetlwJDGcceTlRvqc=
 github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y=
 github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
+github.com/mitchellh/go-testing-interface v1.14.1 h1:jrgshOhYAUVNMAJiKbEu7EqAwgJJ2JqpQmpLJOu07cU=
+github.com/mitchellh/go-testing-interface v1.14.1/go.mod h1:gfgS7OtZj6MA4U1UrDRp04twqAjfvlZyCfX3sDjEym8=
 github.com/mitchellh/go-wordwrap v1.0.0/go.mod h1:ZXFpozHsX6DPmq2I0TCekCxypsnAUbP2oI0UX1GXzOo=
 github.com/mitchellh/mapstructure v1.4.1/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
 github.com/mitchellh/mapstructure v1.5.0 h1:jeMsZIYE/09sWLaz43PL7Gy6RuMjD2eJVyuac5Z2hdY=
@@ -259,6 +273,8 @@ github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/reflect2 v1.0.2 h1:xBagoLtFs94CBntxluKeaWgTMpvLxC4ur3nMaC9Gz0M=
 github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk=
+github.com/mr-karan/coredns-nomad v0.0.0-20230105084401-d4544c11e248 h1:m75vwPLac4xVg5setDIQo9k3fQdJtDRamGrQEGg781Q=
+github.com/mr-karan/coredns-nomad v0.0.0-20230105084401-d4544c11e248/go.mod h1:1rFYVKi/Xuh+MyW7speFbHb0+2kcYpJQBSMtHeSV0uc=
 github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 h1:C3w9PqII01/Oq1c1nUAm88MOHcQC9l5mIlSMApZMrHA=
 github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822/go.mod h1:+n7T8mK8HuQTcFwEeznm/DIxMOiR9yIdICNftLE1DvQ=
 github.com/onsi/ginkgo/v2 v2.19.0 h1:9Cnnf7UHo57Hy3k6/m5k3dRfGTMXGvxhHFvkDTCTpvA=
@@ -312,6 +328,8 @@ github.com/ryanuber/go-glob v1.0.0 h1:iQh3xXAumdQ+4Ufa5b25cRpC5TYKlno6hsv6Cb3pkB
 github.com/ryanuber/go-glob v1.0.0/go.mod h1:807d1WSdnB0XRJzKNil9Om6lcp/3a0v4qIHxIXzX/Yc=
 github.com/secure-systems-lab/go-securesystemslib v0.7.0 h1:OwvJ5jQf9LnIAS83waAjPbcMsODrTQUpJ02eNLUoxBg=
 github.com/secure-systems-lab/go-securesystemslib v0.7.0/go.mod h1:/2gYnlnHVQ6xeGtfIqFy7Do03K4cdCY0A/GlJLDKLHI=
+github.com/shoenig/test v0.5.2 h1:ELZ7qZ/6CPrT71PXrSe2TFzLs4/cGCqqU5lZ5RhZ+B8=
+github.com/shoenig/test v0.5.2/go.mod h1:xYtyGBC5Q3kzCNyJg/SjgNpfAa2kvmgA0i5+lQso8x0=
 github.com/sirupsen/logrus v1.7.0/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0=
 github.com/spaolacci/murmur3 v1.1.0 h1:7c1g84S4BPRrfL5Xrdp6fOJ206sU9y293DDHaoy0bLI=
 github.com/spaolacci/murmur3 v1.1.0/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=

plugin.cfg

@@ -55,15 +55,10 @@ minimal:minimal
 template:template
 transfer:transfer
 hosts:hosts
-route53:route53
-azure:azure
-clouddns:clouddns
-k8s_external:k8s_external
-kubernetes:kubernetes
+nomad:github.com/mr-karan/coredns-nomad
 file:file
 auto:auto
 secondary:secondary
-etcd:etcd
 loop:loop
 forward:forward
 grpc:grpc