support config files to parse env

.github/workflows/release.yml

@@ -30,7 +30,15 @@ jobs:
 
       - name: Set up Docker Buildx
         id: buildx
-        uses: docker/setup-buildx-action@master
+        uses: docker/setup-buildx-action@v2
+
+      - name: Cache Docker layers
+        uses: actions/cache@v3
+        with:
+          path: /tmp/.buildx-cache
+          key: ${{ runner.os }}-buildx-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-buildx-
 
       - name: Login to Docker Hub
         uses: docker/login-action@v2
@@ -39,15 +47,20 @@ jobs:
           password: ${{ secrets.DOCKER_SECRET }}
 
       - name: Build and publish ${{ matrix.target.Dockerfile }}
-        uses: docker/build-push-action@v2
+        uses: docker/build-push-action@v3
         with:
           context: .
           push: true
           builder: ${{ steps.buildx.outputs.name }}
           file: ${{ matrix.target.Dockerfile }}
           platforms: linux/amd64,linux/arm64,linux/arm
-          cache-from: type=gha,scope=${{ github.workflow }}
-          cache-to: type=gha,mode=max,scope=${{ github.workflow }}
+          cache-from: type=local,src=/tmp/.buildx-cache
+          cache-to: type=local,dest=/tmp/.buildx-cache-new,mode=max
           tags: |
             zc2638/drone-k8s-plugin:${{ steps.prepare.outputs.full_tag_name }}
             zc2638/drone-k8s-plugin:${{ steps.prepare.outputs.latest_tag }}
+
+      - name: Move cache
+        run: |
+          rm -rf /tmp/.buildx-cache
+          mv /tmp/.buildx-cache-new /tmp/.buildx-cache

go.mod

@@ -3,17 +3,24 @@ module github.com/zc2638/drone-k8s-plugin
 go 1.19
 
 require (
+	github.com/Masterminds/sprig v2.22.0+incompatible
 	github.com/mitchellh/go-homedir v1.1.0
 	github.com/mitchellh/mapstructure v1.5.0
 	github.com/sirupsen/logrus v1.9.0
 	github.com/spf13/cobra v1.6.1
 	github.com/spf13/viper v1.14.0
+	golang.org/x/sync v0.1.0
+	k8s.io/api v0.25.3
+	k8s.io/apimachinery v0.25.3
 	k8s.io/client-go v0.25.3
 )
 
 require (
+	github.com/Masterminds/goutils v1.1.1 // indirect
+	github.com/Masterminds/semver v1.5.0 // indirect
 	github.com/PuerkitoBio/purell v1.1.1 // indirect
 	github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 // indirect
+	github.com/a8m/envsubst v1.3.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/emicklei/go-restful/v3 v3.8.0 // indirect
 	github.com/fsnotify/fsnotify v1.6.0 // indirect
@@ -25,12 +32,17 @@ require (
 	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/google/gnostic v0.5.7-v3refs // indirect
 	github.com/google/gofuzz v1.1.0 // indirect
+	github.com/google/uuid v1.3.0 // indirect
 	github.com/hashicorp/hcl v1.0.0 // indirect
+	github.com/huandu/xstrings v1.3.3 // indirect
+	github.com/imdario/mergo v0.3.13 // indirect
 	github.com/inconshreveable/mousetrap v1.0.1 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/magiconair/properties v1.8.6 // indirect
 	github.com/mailru/easyjson v0.7.6 // indirect
+	github.com/mitchellh/copystructure v1.2.0 // indirect
+	github.com/mitchellh/reflectwalk v1.0.2 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
@@ -41,11 +53,11 @@ require (
 	github.com/spf13/jwalterweatherman v1.1.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/subosito/gotenv v1.4.1 // indirect
-	golang.org/x/net v0.0.0-20221014081412-f15817d10f9b // indirect
+	golang.org/x/crypto v0.2.0 // indirect
+	golang.org/x/net v0.2.0 // indirect
 	golang.org/x/oauth2 v0.0.0-20221014153046-6fdb5e3db783 // indirect
-	golang.org/x/sync v0.1.0 // indirect
-	golang.org/x/sys v0.1.0 // indirect
-	golang.org/x/term v0.0.0-20210927222741-03fcf44c2211 // indirect
+	golang.org/x/sys v0.2.0 // indirect
+	golang.org/x/term v0.2.0 // indirect
 	golang.org/x/text v0.4.0 // indirect
 	golang.org/x/time v0.0.0-20220609170525-579cf78fd858 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
@@ -54,8 +66,6 @@ require (
 	gopkg.in/ini.v1 v1.67.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
-	k8s.io/api v0.25.3 // indirect
-	k8s.io/apimachinery v0.25.3 // indirect
 	k8s.io/klog/v2 v2.70.1 // indirect
 	k8s.io/kube-openapi v0.0.0-20220803162953-67bda5d908f1 // indirect
 	k8s.io/utils v0.0.0-20220728103510-ee6ede2d64ed // indirect

go.sum

@@ -38,10 +38,18 @@ cloud.google.com/go/storage v1.14.0/go.mod h1:GrKmX003DSIwi9o29oFT7YDnHYwZoctc3f
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
+github.com/Masterminds/goutils v1.1.1 h1:5nUrii3FMTL5diU80unEVvNevw1nH4+ZV4DSLVJLSYI=
+github.com/Masterminds/goutils v1.1.1/go.mod h1:8cTjp+g8YejhMuvIA5y2vz3BpJxksy863GQaJW2MFNU=
+github.com/Masterminds/semver v1.5.0 h1:H65muMkzWKEuNDnfl9d70GUjFniHKHRbFPGBuZ3QEww=
+github.com/Masterminds/semver v1.5.0/go.mod h1:MB6lktGJrhw8PrUyiEoblNEGEQ+RzHPF078ddwwvV3Y=
+github.com/Masterminds/sprig v2.22.0+incompatible h1:z4yfnGrZ7netVz+0EDJ0Wi+5VZCSYp4Z0m2dk6cEM60=
+github.com/Masterminds/sprig v2.22.0+incompatible/go.mod h1:y6hNFY5UBTIWBxnzTeuNhlNS5hqE0NB0E6fgfo2Br3o=
 github.com/PuerkitoBio/purell v1.1.1 h1:WEQqlqaGbrPkxLJWfBwQmfEAE1Z7ONdDLqrN38tNFfI=
 github.com/PuerkitoBio/purell v1.1.1/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
 github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 h1:d+Bc7a5rLufV/sSk/8dngufqelfh6jnri85riMAaF/M=
 github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
+github.com/a8m/envsubst v1.3.0 h1:GmXKmVssap0YtlU3E230W98RWtWCyIZzjtf1apWWyAg=
+github.com/a8m/envsubst v1.3.0/go.mod h1:MVUTQNGQ3tsjOOtKCNd+fl8RzhsXcDvvAEzkhGtlsbY=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
@@ -145,6 +153,8 @@ github.com/google/pprof v0.0.0-20201203190320-1bf35d6f28c2/go.mod h1:kpwsk12EmLe
 github.com/google/pprof v0.0.0-20201218002935-b9804c9f04c2/go.mod h1:kpwsk12EmLew5upagYY7GY0pfYCcupk39gWOCRROcvE=
 github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
 github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
+github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+vpHVxEJEs9eg=
 github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5mhpdKc/us6bOk=
 github.com/googleapis/google-cloud-go-testing v0.0.0-20200911160855-bcd43fbb19e8/go.mod h1:dvDLG8qkwmyD9a/MJJN3XJcT3xFxOKAvTZGvuZmac9g=
@@ -152,8 +162,12 @@ github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ
 github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/hashicorp/hcl v1.0.0 h1:0Anlzjpi4vEasTeNFn2mLJgTSwt0+6sfsiTG8qcWGx4=
 github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
+github.com/huandu/xstrings v1.3.3 h1:/Gcsuc1x8JVbJ9/rlye4xZnVAbEkGauT8lbebqcQws4=
+github.com/huandu/xstrings v1.3.3/go.mod h1:y5/lhBue+AyNmUVz9RLU9xbLR0o4KIIExikq4ovT0aE=
 github.com/ianlancetaylor/demangle v0.0.0-20181102032728-5e5cf60278f6/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
 github.com/ianlancetaylor/demangle v0.0.0-20200824232613-28f6c0f3b639/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
+github.com/imdario/mergo v0.3.13 h1:lFzP57bqS/wsqKssCGmtLAb8A0wKjLGrve2q3PPVcBk=
+github.com/imdario/mergo v0.3.13/go.mod h1:4lJ1jqUDcsbIECGy0RUJAXNIhg+6ocWgb1ALK2O4oXg=
 github.com/inconshreveable/mousetrap v1.0.1 h1:U3uMjPSQEBMNp1lFxmllqCPM6P5u/Xq7Pgzkat/bFNc=
 github.com/inconshreveable/mousetrap v1.0.1/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
 github.com/josharian/intern v1.0.0 h1:vlS4z54oSdjm0bgjRigI+G1HpF+tI+9rE5LLzOg8HmY=
@@ -178,10 +192,14 @@ github.com/mailru/easyjson v0.0.0-20190614124828-94de47d64c63/go.mod h1:C1wdFJiN
 github.com/mailru/easyjson v0.0.0-20190626092158-b2ccc519800e/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
 github.com/mailru/easyjson v0.7.6 h1:8yTIVnZgCoiM1TgqoeTl+LfU5Jg6/xL3QhGQnimLYnA=
 github.com/mailru/easyjson v0.7.6/go.mod h1:xzfreul335JAWq5oZzymOObrkdz5UnU4kGfJJLY9Nlc=
+github.com/mitchellh/copystructure v1.2.0 h1:vpKXTN4ewci03Vljg/q9QvCGUDttBOGBIa15WveJJGw=
+github.com/mitchellh/copystructure v1.2.0/go.mod h1:qLl+cE2AmVv+CoeAwDPye/v+N2HKCj9FbZEVFJRxO9s=
 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/mapstructure v1.5.0 h1:jeMsZIYE/09sWLaz43PL7Gy6RuMjD2eJVyuac5Z2hdY=
 github.com/mitchellh/mapstructure v1.5.0/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
+github.com/mitchellh/reflectwalk v1.0.2 h1:G2LzWKi524PWgd3mLHV8Y5k7s6XUvT0Gef6zxSIeXaQ=
+github.com/mitchellh/reflectwalk v1.0.2/go.mod h1:mSTlrgnPZtwu0c4WaC2kGObEpuNDbx0jmZXqmk4esnw=
 github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
@@ -251,6 +269,8 @@ golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8U
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20210421170649-83a5a9bb288b/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
 golang.org/x/crypto v0.0.0-20211108221036-ceb1ce70b4fa/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/crypto v0.2.0 h1:BRXPfhNivWL5Yq0BGQ39a2sW6t44aODpfxkWjYdzewE=
+golang.org/x/crypto v0.2.0/go.mod h1:hebNnKkNXi2UzZN1eVRvBB7co0a+JxK6XbPiWVs/3J4=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190510132918-efd6b22b2522/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=
@@ -316,8 +336,8 @@ golang.org/x/net v0.0.0-20201031054903-ff519b6c9102/go.mod h1:sp8m0HH+o8qH0wwXwY
 golang.org/x/net v0.0.0-20201209123823-ac852fbbde11/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20201224014010-6772e930b67b/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
-golang.org/x/net v0.0.0-20221014081412-f15817d10f9b h1:tvrvnPFcdzp294diPnrdZZZ8XUt2Tyj7svb7X52iDuU=
-golang.org/x/net v0.0.0-20221014081412-f15817d10f9b/go.mod h1:YDH+HFinaLZZlnHAfSS6ZXJJ9M9t4Dl22yv3iI2vPwk=
+golang.org/x/net v0.2.0 h1:sZfSu1wtKLGlWI4ZZayP0ck9Y73K1ynO6gqzTdBVdPU=
+golang.org/x/net v0.2.0/go.mod h1:KqCZLdyyvdV855qA2rE3GC2aiw5xGR5TEjj8smXukLY=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
@@ -377,11 +397,11 @@ golang.org/x/sys v0.0.0-20210423185535-09eb48e85fd7/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220908164124-27713097b956/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.1.0 h1:kunALQeHf1/185U1i0GOB/fy1IPRDDpuoOOqRReG57U=
-golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.2.0 h1:ljd4t30dBnAvMZaQCevtY0xLLD0A+bRZXbgLMLU1F/A=
+golang.org/x/sys v0.2.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
-golang.org/x/term v0.0.0-20210927222741-03fcf44c2211 h1:JGgROgKl9N8DuW20oFS5gxc+lE67/N3FcwmBPMe7ArY=
-golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/term v0.2.0 h1:z85xZCsEl7bi/KwbNADeBYoOP0++7W1ipu+aGnpwzRM=
+golang.org/x/term v0.2.0/go.mod h1:TVmDHMZPmdnySmBfhjOoOdhjzdE1h4u1VwSiw2l1Nuc=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
@@ -558,6 +578,7 @@ gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.0/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

pkg/plugin/cmd.go

@@ -15,7 +15,9 @@
 package plugin
 
 import (
+	"fmt"
 	"os"
+	"strings"
 
 	"github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
@@ -46,10 +48,14 @@ func NewCommand() *cobra.Command {
 		Run: func(cmd *cobra.Command, args []string) {
 			cfg := opt.Config()
 			cfg.BindEnvs()
+			logrus.Infof("Config Path: %s", opt.ConfigPath)
 			if err := cfg.Parse(opt.ConfigPath, constants.ProjectName); err != nil {
 				logrus.Fatal(err)
 			}
-			if err := cfg.Validate(); err != nil {
+
+			envMap := getEnvMap()
+			envs := envToSlice(envMap)
+			if err := cfg.Validate(envs); err != nil {
 				logrus.Fatal(err)
 			}
 			if cfg.Debug {
@@ -69,7 +75,7 @@ func NewCommand() *cobra.Command {
 			if err != nil {
 				logrus.Fatal(err)
 			}
-			if err := run(cfg, kubeClient, dynamicClient); err != nil {
+			if err := run(cfg, kubeClient, dynamicClient, envMap); err != nil {
 				logrus.Fatal(err)
 			}
 		},
@@ -79,3 +85,32 @@ func NewCommand() *cobra.Command {
 		"config file (default is $HOME/.drone-plugin/config.yaml)")
 	return cmd
 }
+
+func getEnvMap() map[string]string {
+	envMap := make(map[string]string)
+	envs := os.Environ()
+	for _, v := range envs {
+		if pluginExp.MatchString(v) {
+			matches := pluginExp.FindStringSubmatch(v)
+			key := strings.ToLower(matches[1])
+			envMap[key] = matches[2]
+			logrus.Debugf("env: %s=%s", key, matches[2])
+		}
+
+		parts := strings.SplitN(v, "=", 2)
+		if len(parts) != 2 {
+			continue
+		}
+		envMap[parts[0]] = parts[1]
+		logrus.Debugf("env: %s=%s", parts[0], parts[1])
+	}
+	return envMap
+}
+
+func envToSlice(set map[string]string) []string {
+	env := make([]string, 0, len(set))
+	for k, v := range set {
+		env = append(env, fmt.Sprintf("%s=%s", k, v))
+	}
+	return env
+}

pkg/plugin/config.go

@@ -21,6 +21,8 @@ import (
 	"path/filepath"
 	"strings"
 
+	"github.com/a8m/envsubst/parse"
+
 	"github.com/zc2638/drone-k8s-plugin/pkg/constants"
 
 	"github.com/zc2638/drone-k8s-plugin/pkg/kube"
@@ -83,29 +85,35 @@ func (c *Config) GetConfigFiles() []ConfigFile {
 	return c.configFiles[:]
 }
 
-func (c *Config) Validate() error {
+func (c *Config) Validate(envs []string) error {
 	if len(c.InitTemplates) == 0 && len(c.ConfigFiles) == 0 && len(c.Templates) == 0 {
 		return errors.New("at least one of init_templates, config_files and templates is defined")
 	}
 
+	parser := parse.New("string", envs, &parse.Restrictions{})
+
 	cfs := make([]ConfigFile, 0, len(c.ConfigFiles))
 	for _, v := range c.ConfigFiles {
+		val, err := parser.Parse(v)
+		if err != nil {
+			return fmt.Errorf("parse env variable failed: %v", err)
+		}
+
 		cf := ConfigFile{}
-		parts := strings.Split(v, ":")
+		parts := strings.Split(val, ":")
 		switch len(parts) {
 		case 3:
 		case 4:
 			cf.FileName = parts[3]
 		default:
-			return fmt.Errorf("config file (%s) format error, please use `namespace:name:file` or `namespace:name:filepath:filename` to define", v)
+			return fmt.Errorf("config file (%s) format error, please use `namespace:name:file` or `namespace:name:filepath:filename` to define", val)
 		}
 		cf.Namespace = parts[0]
 		cf.Name = parts[1]
 		cf.FilePath = parts[2]
 
-		_, err := os.Stat(cf.FilePath)
-		if err != nil {
-			return err
+		if _, err := os.Stat(cf.FilePath); err != nil {
+			return fmt.Errorf("stat config file(%s) failed: %v", val, err)
 		}
 		cfs = append(cfs, cf)
 	}

pkg/plugin/plugin.go

@@ -21,7 +21,8 @@ import (
 	"path/filepath"
 	"regexp"
 	"strconv"
-	"strings"
+
+	pkgruntime "k8s.io/apimachinery/pkg/runtime"
 
 	v1 "k8s.io/api/core/v1"
 
@@ -39,27 +40,14 @@ import (
 	"github.com/zc2638/drone-k8s-plugin/pkg/tpl"
 )
 
-var (
-	pluginExp = regexp.MustCompile(`^PLUGIN_(.*)=(.*)`)
-	droneExp  = regexp.MustCompile(`^DRONE_(.*)=(.*)`)
-)
-
-func run(cfg *Config, kubeClient kubernetes.Interface, dynamicClient dynamic.Interface) error {
-	envMap := make(map[string]string)
-	envs := os.Environ()
-	for _, v := range envs {
-		if pluginExp.MatchString(v) {
-			matches := pluginExp.FindStringSubmatch(v)
-			key := strings.ToLower(matches[1])
-			envMap[key] = matches[2]
-		}
-		if droneExp.MatchString(v) {
-			matches := droneExp.FindStringSubmatch(v)
-			key := strings.ToLower(matches[1])
-			envMap[key] = matches[2]
-		}
-	}
+var pluginExp = regexp.MustCompile(`^PLUGIN_(.*)=(.*)`)
 
+func run(
+	cfg *Config,
+	kubeClient kubernetes.Interface,
+	dynamicClient dynamic.Interface,
+	envMap map[string]string,
+) error {
 	initObjSet, err := parseObjectSet(cfg.InitTemplates, envMap)
 	if err != nil {
 		return fmt.Errorf("parse init_templates failed: %v", err)
@@ -75,15 +63,15 @@ func run(cfg *Config, kubeClient kubernetes.Interface, dynamicClient dynamic.Int
 	}
 	mapping := restmapper.NewDiscoveryRESTMapper(gr)
 
-	logrus.Debug("start to apply resources from init templates")
+	logrus.Debug("Start to apply resources from init templates")
 	if err := applyResources(dynamicClient, mapping, initObjSet, cfg.Namespace); err != nil {
 		return err
 	}
-	logrus.Debug("start to apply configmaps from config files")
+	logrus.Debug("Start to apply configmaps from config files")
 	if err := applyForConfig(kubeClient, cfg.GetConfigFiles()); err != nil {
 		return err
 	}
-	logrus.Debug("start to apply resources from templates")
+	logrus.Debug("Start to apply resources from templates")
 	if err := applyResources(dynamicClient, mapping, objSet, cfg.Namespace); err != nil {
 		return err
 	}
@@ -140,7 +128,7 @@ func applyResources(
 					WithField("kind", gvk.Kind).
 					WithField("namespace", objCopy.GetNamespace()).
 					WithField("name", objCopy.GetName()).
-					Info("Apply resource")
+					Info("Apply Resource")
 
 				restMapping, err := mapping.RESTMapping(gvk.GroupKind(), gvk.Version)
 				if err != nil {
@@ -172,6 +160,15 @@ func applyResources(
 					},
 				})
 				if err == nil {
+					switch objCopy.GetKind() {
+					case "Service":
+						objCopy, err = completeService(origin, objCopy)
+						if err != nil {
+							return err
+						}
+					default:
+					}
+
 					rv, _ := strconv.ParseInt(origin.GetResourceVersion(), 10, 64)
 					objCopy.SetResourceVersion(strconv.FormatInt(rv, 10))
 					if _, err = resourceInter.Update(ctx, objCopy, metav1.UpdateOptions{}); err != nil {
@@ -194,6 +191,32 @@ func applyResources(
 	}
 	return nil
 }
+
+func completeService(origin, obj *unstructured.Unstructured) (*unstructured.Unstructured, error) {
+	var (
+		originSvc v1.Service
+		objSvc    v1.Service
+	)
+	if err := pkgruntime.DefaultUnstructuredConverter.FromUnstructured(origin.UnstructuredContent(), &originSvc); err != nil {
+		return nil, fmt.Errorf("convert origin unstructured object %s to Service failed: %v", obj.GetName(), err)
+	}
+	if err := pkgruntime.DefaultUnstructuredConverter.FromUnstructured(obj.UnstructuredContent(), &objSvc); err != nil {
+		return nil, fmt.Errorf("convert unstructured object %s to Service failed: %v", obj.GetName(), err)
+	}
+
+	objSvc.Spec.ClusterIP = originSvc.Spec.ClusterIP
+	objSvc.Spec.ClusterIPs = originSvc.Spec.ClusterIPs
+
+	unstructuredContent, err := pkgruntime.DefaultUnstructuredConverter.ToUnstructured(&objSvc)
+	if err != nil {
+		return nil, fmt.Errorf("convert Service %s to unstructured object failed: %v", objSvc.GetName(), err)
+	}
+
+	current := &unstructured.Unstructured{}
+	current.SetUnstructuredContent(unstructuredContent)
+	return current, nil
+}
+
 func applyForConfig(kubeClient kubernetes.Interface, cfs []ConfigFile) error {
 	if len(cfs) == 0 {
 		return nil

pkg/tpl/tpl.go

@@ -18,10 +18,12 @@ import (
 	"bytes"
 	"text/template"
 
+	"github.com/Masterminds/sprig"
+
 	"github.com/zc2638/drone-k8s-plugin/pkg/constants"
 )
 
-var tpl = template.New(constants.ProjectName)
+var tpl = template.New(constants.ProjectName).Funcs(sprig.TxtFuncMap())
 
 func Render(in []byte, envMap map[string]string) ([]byte, error) {
 	t, err := tpl.Parse(string(in))

testdata/service.yaml

@@ -1,14 +1,14 @@
 apiVersion: v1
 kind: Service
 metadata:
-  name: {{ app_name }}
-  namespace: {{ app_namespace }}
+  name: {{ .env.app_name }}
+  namespace: {{ .env.app_namespace }}
   labels:
-    app: {{ app_name }}
+    app: {{ .env.app_name }}
 spec:
   ports:
     - nodePort: 30090
       port: 9090
   selector:
-    app: {{ app_name }}
+    app: {{ .env.app_name }}
   type: NodePort