Test PR

README.md

@@ -110,10 +110,10 @@ the image hierarchy
 ## Building and running
 To build the binary, run the following command from the project root:
 ```
-go build -i -o cake
+go build -i -o cake ./cmd/cake/main.go
 ```
 
-It will produce a binary compiled for the current OS/platform. Use `build.sh` to build for both linux/amd64 and darwin/amd64.
+It will produce a binary compiled for the current OS/platform. Use `build.sh` to build for linux/amd64, darwin/amd64, and windows.
 
 To get a list of available options run:
 ```

build.sh

@@ -1,17 +1,21 @@
 #!/bin/bash
 set -e
-platforms=("linux/amd64" "darwin/amd64")
+
+platforms=("linux/amd64" "darwin/amd64" "windows")
 dist_dir="dist"
 
 for platform in "${platforms[@]}"
 do
     platform_split=(${platform//\// })
     GOOS=${platform_split[0]}
     GOARCH=${platform_split[1]}
-    output_name="cake-${GOOS}-${GOARCH}"
+    output_name="cake"
     if [[ ${GOOS} = "windows" ]]; then
-        output_name+='.exe'
+        output_name+="-${GOOS}.exe"
+    else
+        output_name+="-${GOOS}-${GOARCH}"
     fi
+
     echo "Building for ${platform}: ${output_name}"
-    GOOS=${GOOS} GOARCH=${GOARCH} go build -o $dist_dir/"${output_name}"
+    GOOS=${GOOS} GOARCH=${GOARCH} go build -o "${output_name}" ./cmd/cake/main.go
 done

main.go → cmd/cake/main.go

@@ -5,6 +5,8 @@ import (
 	"fmt"
 	"log"
 	"os"
+
+	"github.com/mesosphere/cake-builder/pkg/cake"
 )
 
 func main() {
@@ -23,8 +25,8 @@ func main() {
 	dockerPassword := flag.String("password", "", "Password to authenticate with Docker registry")
 	flag.Parse()
 
-	var config BuildConfig
-	err = config.loadConfigFromFile(currentDir + "/cake.yaml")
+	var config cake.BuildConfig
+	err = config.LoadConfigFromFile(currentDir + "/cake.yaml")
 	if err != nil {
 		log.Fatal(err)
 	}
@@ -33,7 +35,7 @@ func main() {
 	config.ReleaseTag = *releaseTag
 	config.OutputFile = *outputFile
 
-	authConfig := AuthConfig{
+	authConfig := cake.AuthConfig{
 		DockerRegistryUrl: *registryUrl,
 		Username:          *dockerUser,
 		Password:          *dockerPassword,
@@ -44,49 +46,49 @@ func main() {
 	log.Println(config.Images)
 	log.Println(fmt.Sprintf("[build] dry run: %t, release tag: %s, output file: %s", *dryRun, *releaseTag, *outputFile))
 
-	images, err := transformConfigToImages(config)
+	images, err := cake.TransformConfigToImages(config)
 	if err != nil {
 		log.Fatal(err)
 	}
 
-	buildGraph, err := createImageBuildGraph(images)
+	buildGraph, err := cake.CreateImageBuildGraph(images)
 	if err != nil {
 		log.Fatal(err)
 	}
 
-	walkBuildGraph(buildGraph, func(image *Image) {
-		err = image.renderDockerfileFromTemplate(config)
+	cake.WalkBuildGraph(buildGraph, func(image *cake.Image) {
+		err = image.RenderDockerfileFromTemplate(config)
 		if err != nil {
 			log.Fatal(err)
 		}
-		err = image.calculateChecksum()
+		err = image.CalculateChecksum()
 		if err != nil {
 			log.Fatal(err)
 		}
 	})
 
-	dockerClient := NewExternalDockerClient(config.AuthConfig)
+	dockerClient := cake.NewExternalDockerClient(config.AuthConfig)
 
 	if !*dryRun {
-		walkBuildGraph(buildGraph, func(image *Image) {
-			exists, err := imageExists(dockerClient, image, config)
+		cake.WalkBuildGraph(buildGraph, func(image *cake.Image) {
+			exists, err := cake.ImageExists(dockerClient, image, config)
 			if err != nil {
 				log.Fatal(err)
 			}
 
 			if !exists {
-				err = buildImage(dockerClient, image, config)
+				err = cake.BuildImage(dockerClient, image, config)
 				if err != nil {
 					log.Fatal(err)
 				}
 
-				err = pushImage(dockerClient, image, config)
+				err = cake.PushImage(dockerClient, image, config)
 				if err != nil {
 					log.Fatal(err)
 				}
 			}
 		})
-		err = generateReport(buildGraph, config)
+		err = cake.GenerateReport(buildGraph, config)
 		if err != nil {
 			log.Fatal(err)
 		}

go.mod

@@ -1,21 +1,19 @@
-module github.com/mesosphere/data-services-tooling/cake-builder
+module github.com/mesosphere/cake-builder
 
 go 1.13
 
 require (
 	github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 // indirect
 	github.com/Microsoft/go-winio v0.4.14 // indirect
 	github.com/cbroglie/mustache v1.0.1
-	github.com/containerd/containerd v1.3.2 // indirect
+	github.com/containerd/containerd v1.3.3 // indirect
 	github.com/docker/docker v1.4.2-0.20200203170920-46ec8731fbce
 	github.com/docker/go-connections v0.4.0 // indirect
 	github.com/docker/go-units v0.4.0 // indirect
 	github.com/heroku/docker-registry-client v0.0.0-20190909225348-afc9e1acc3d5
 	github.com/jhoonb/archivex v0.0.0-20180718040744-0488e4ce1681
 	github.com/morikuni/aec v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.0.1 // indirect
-	golang.org/x/time v0.0.0-20191024005414-555d28b269f0 // indirect
-	google.golang.org/grpc v1.27.0 // indirect
+	google.golang.org/grpc v1.28.0 // indirect
 	gopkg.in/yaml.v2 v2.2.8
-	gotest.tools v2.2.0+incompatible // indirect
 )

go.sum

@@ -10,22 +10,25 @@ github.com/cbroglie/mustache v1.0.1 h1:ivMg8MguXq/rrz2eu3tw6g3b16+PQhoTn6EZAhst2
 github.com/cbroglie/mustache v1.0.1/go.mod h1:R/RUa+SobQ14qkP4jtx5Vke5sDytONDQXNLPY/PO69g=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
-github.com/containerd/containerd v1.3.2 h1:ForxmXkA6tPIvffbrDAcPUIB32QgXkt2XFj+F0UxetA=
-github.com/containerd/containerd v1.3.2/go.mod h1:bC6axHOhabU15QhwfG7w5PipXdVtMXFTttgp+kVtyUA=
+github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
+github.com/containerd/containerd v1.3.3 h1:LoIzb5y9x5l8VKAlyrbusNPXqBY0+kviRloxFUMFwKc=
+github.com/containerd/containerd v1.3.3/go.mod h1:bC6axHOhabU15QhwfG7w5PipXdVtMXFTttgp+kVtyUA=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/docker/distribution v0.0.0-20171011171712-7484e51bf6af h1:ujR+JcSHkOZMctuIgvi+a/VHpTn0nSy0W7eV5p34xjg=
 github.com/docker/distribution v0.0.0-20171011171712-7484e51bf6af/go.mod h1:J2gT2udsDAN96Uj4KfcMRqY0/ypR+oyYUYmja8H+y+w=
 github.com/docker/docker v1.4.2-0.20200203170920-46ec8731fbce h1:KXS1Jg+ddGcWA8e1N7cupxaHHZhit5rB9tfDU+mfjyY=
 github.com/docker/docker v1.4.2-0.20200203170920-46ec8731fbce/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
+github.com/docker/docker v1.13.1 h1:IkZjBSIc8hBjLpqeAbeE5mca5mNgeatLHBy3GO78BWo=
+github.com/docker/docker v1.13.1/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
 github.com/docker/go-connections v0.4.0 h1:El9xVISelRB7BuFusrZozjnkIM5YnzCViNKohAFqRJQ=
 github.com/docker/go-connections v0.4.0/go.mod h1:Gbd7IOopHjR8Iph03tsViu4nIes5XhDvyHbTtUxmeec=
 github.com/docker/go-units v0.4.0 h1:3uh0PgVws3nIA0Q+MwDC8yjEPf9zjRfZZWXZYDct3Tw=
 github.com/docker/go-units v0.4.0/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=
 github.com/docker/libtrust v0.0.0-20160708172513-aabc10ec26b7 h1:UhxFibDNY/bfvqU5CAUmr9zpesgbU6SWc8/B4mflAE4=
 github.com/docker/libtrust v0.0.0-20160708172513-aabc10ec26b7/go.mod h1:cyGadeNEkKy96OOhEzfZl+yxihPEzKnqJwvfuSUqbZE=
-github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
+github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
+github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/fatih/color v1.6.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
@@ -48,13 +51,13 @@ github.com/go-toolsmith/typep v1.0.0/go.mod h1:JSQCQMUPdRlMZFswiq3TGpNp1GMktqkR2
 github.com/gobwas/glob v0.2.3/go.mod h1:d3Ez4x06l9bZtSvzIay5+Yzi0fmZzPgnTbPcKjJAkT8=
 github.com/gogo/protobuf v1.1.1 h1:72R+M5VuhED/KujmZVcIquuo8mBgX4oVda//DQb3PXo=
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
-github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
 github.com/golang/mock v1.0.0/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/golang/protobuf v1.3.2 h1:6nsPYzhq5kReh6QImI3k5qWzO4PEbvbIW2cwSfR/6xs=
 github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.3.3 h1:gyjaxf+svBWX08ZjK86iN9geUJF0H6gp2IRKX6Nf6/I=
+github.com/golang/protobuf v1.3.3/go.mod h1:vzj43D7+SQXF/4pzW/hwtAqwc6iTitCiVSaWz5lYuqw=
 github.com/golangci/check v0.0.0-20180506172741-cfe4005ccda2/go.mod h1:k9Qvh+8juN+UKMCS/3jFtGICgW8O96FVaZsaxdzDkR4=
 github.com/golangci/dupl v0.0.0-20180902072040-3e9179ac440a/go.mod h1:ryS0uhF+x9jgbj/N71xsEqODy9BN81/GonCZiOzirOk=
 github.com/golangci/errcheck v0.0.0-20181223084120-ef45e06d44b6/go.mod h1:DbHgvLiFKX1Sh2T1w8Q/h4NAI8MHIpzCdnBUDTXU3I0=
@@ -72,9 +75,7 @@ github.com/golangci/misspell v0.0.0-20180809174111-950f5d19e770/go.mod h1:dEbvlS
 github.com/golangci/prealloc v0.0.0-20180630174525-215b22d4de21/go.mod h1:tf5+bzsHdTM0bsB7+8mt0GUMvjCgwLpTapNZHU8AajI=
 github.com/golangci/revgrep v0.0.0-20180526074752-d9c87f5ffaf0/go.mod h1:qOQCunEYvmd/TLamH+7LlVccLvUH5kZNhbCgTHoBbp4=
 github.com/golangci/unconvert v0.0.0-20180507085042-28b1c447d1f4/go.mod h1:Izgrg8RkN3rCIMLGE9CyYmU9pY2Jer6DgANEnZ/L/cQ=
-github.com/google/go-cmp v0.2.0 h1:+dTQ8DZQJz0Mb/HjFlkptS1FeQ4cWSnN941F8aEG4SQ=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
-github.com/gorilla/mux v1.7.3 h1:gnP5JzjVOuiZD07fKKToCAOjS0yOpj/qPETTXCCS6hw=
 github.com/gorilla/mux v1.7.3/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs=
 github.com/gostaticanalysis/analysisutil v0.0.0-20190318220348-4088753ea4d3/go.mod h1:eEOZF4jCKGi+aprrirO9e7WKB3beBRtWgqGunKl6pKE=
 github.com/hashicorp/hcl v0.0.0-20180404174102-ef8a98b0bbce/go.mod h1:oZtUIOe8dh44I2q6ScRibXws4Ajl+d+nod3AaR9vL5w=
@@ -92,10 +93,8 @@ github.com/klauspost/cpuid v0.0.0-20180405133222-e7e905edc00e/go.mod h1:Pj4uuM52
 github.com/klauspost/cpuid v1.2.0/go.mod h1:Pj4uuM528wm8OyEC2QMXAi2YiTZ96dNQPGgoMS4s3ek=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1 h1:mweAR1A6xJ3oS2pRaGiHgQ4OO8tzTaLawm8vnODuwDk=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
-github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
-github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/logrusorgru/aurora v0.0.0-20181002194514-a7b3b318ed4e/go.mod h1:7rIyQOR62GCctdiQpZ/zOJlFyk6y+94wXzv6RNZgaR4=
 github.com/magiconair/properties v1.7.6/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
@@ -121,7 +120,6 @@ github.com/opencontainers/image-spec v1.0.1/go.mod h1:BtxoFyWECRxE4U/7sNtV5W15zM
 github.com/pelletier/go-toml v1.1.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/94hg7ilaic=
 github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
-github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/quasilyte/go-consistent v0.0.0-20190521200055-c6f3937de18c/go.mod h1:5STLWrekHfjyYwxBRVRXNOSewLJ3PWfDJd1VyTS21fI=
@@ -145,7 +143,6 @@ github.com/spf13/viper v1.0.2/go.mod h1:A8kyI5cUJhb8N+3pkfONlcEcZbueH6nhAm0Fq7Sr
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
-github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
 github.com/timakin/bodyclose v0.0.0-20190721030226-87058b9bfcec/go.mod h1:Qimiffbc6q9tBWlVV6x0P9sat/ao1xEkREYPPj9hphk=
 github.com/ultraware/funlen v0.0.1/go.mod h1:Dp4UiAus7Wdb9KUZsYWZEWiRzGuM2kXM1lPbfaF6xhA=
@@ -182,10 +179,7 @@ golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20190507160741-ecd444e8653b h1:ag/x1USPSsqHud38I9BAC88qdNLDHHtQ4mlgQIZPPNA=
 golang.org/x/sys v0.0.0-20190507160741-ecd444e8653b/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.0.0-20170915090833-1cbadb444a80/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/time v0.0.0-20191024005414-555d28b269f0 h1:/5xXl8Y5W96D+TtHSlonuFqGHIWVuyCkGJLwGh9JJFs=
-golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/tools v0.0.0-20170915040203-e531a2a1c15f/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20180221164845-07fd8470d635/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20181117154741-2ddaf7f79a09/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
@@ -205,11 +199,11 @@ google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55 h1:gSJIx1SDwno+2El
 google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
-google.golang.org/grpc v1.27.0 h1:rRYRFMVgRv6E0D70Skyfsr28tDXIuuPZyWGMPdMcnXg=
-google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
+google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
+google.golang.org/grpc v1.28.0 h1:bO/TA4OxCOummhSf10siHuG7vJOiwh7SpRpFZDkOgl4=
+google.golang.org/grpc v1.28.0/go.mod h1:rpkK4SK4GF4Ach/+MFLZUBavHOvF2JJB5uozKKal+60=
 gopkg.in/airbrake/gobrake.v2 v2.0.9/go.mod h1:/h5ZAUhDkGaJfjzjKLSjv6zCL6O0LLBxU4K+aSYdM/U=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
@@ -220,8 +214,6 @@ gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gotest.tools v2.2.0+incompatible h1:VsBPFP1AI068pPrMxtb/S8Zkgf9xEmTLJjfM+P5UIEo=
-gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 mvdan.cc/interfacer v0.0.0-20180901003855-c20040233aed/go.mod h1:Xkxe497xwlCKkIaQYRfC7CSLworTXY9RMqwhhCm+8Nc=

config.go → pkg/cake/config.go

@@ -1,4 +1,4 @@
-package main
+package cake
 
 import (
 	"encoding/json"
@@ -51,7 +51,7 @@ func (config BuildConfig) validate() error {
 	return nil
 }
 
-func (config *BuildConfig) loadConfigFromFile(fileName string) error {
+func (config *BuildConfig) LoadConfigFromFile(fileName string) error {
 	configFile, err := ioutil.ReadFile(fileName)
 	if err != nil {
 		return fmt.Errorf("error reading config file: %v", err)

docker_client.go → pkg/cake/docker_client.go

@@ -1,4 +1,4 @@
-package main
+package cake
 
 import (
 	"context"
@@ -61,7 +61,7 @@ func NewExternalDockerClient(authConfig AuthConfig) *ExternalDockerClient {
 	return &dockerClient
 }
 
-func imageExists(dockerClient DockerClient, image *Image, config BuildConfig) (bool, error) {
+func ImageExists(dockerClient DockerClient, image *Image, config BuildConfig) (bool, error) {
 
 	tags, err := dockerClient.Tags(config.AuthConfig.DockerRegistryUrl, image.getFullName())
 	if err != nil {
@@ -78,7 +78,7 @@ func imageExists(dockerClient DockerClient, image *Image, config BuildConfig) (b
 	return false, nil
 }
 
-func buildImage(dockerClient DockerClient, image *Image, config BuildConfig) error {
+func BuildImage(dockerClient DockerClient, image *Image, config BuildConfig) error {
 	imageConfig := image.ImageConfig
 
 	tmpDir := os.TempDir()
@@ -132,7 +132,7 @@ func buildImage(dockerClient DockerClient, image *Image, config BuildConfig) err
 	return nil
 }
 
-func pushImage(dockerClient DockerClient, image *Image, config BuildConfig) error {
+func PushImage(dockerClient DockerClient, image *Image, config BuildConfig) error {
 	base64Auth, err := base64Auth(config)
 	if err != nil {
 		return err

docker_client_test.go → pkg/cake/docker_client_test.go

@@ -1,4 +1,4 @@
-package main
+package cake
 
 import (
 	"context"
@@ -53,7 +53,7 @@ func TestImageExists(t *testing.T) {
 		ReleaseTag: testTag,
 	}
 
-	exists, err := imageExists(client, &image, config)
+	exists, err := ImageExists(client, &image, config)
 	if err != nil {
 		t.Error(err)
 	}
@@ -63,7 +63,7 @@ func TestImageExists(t *testing.T) {
 	}
 
 	config.ReleaseTag = "nonexistent"
-	exists, err = imageExists(client, &image, config)
+	exists, err = ImageExists(client, &image, config)
 	if err != nil {
 		t.Error(err)
 	}
@@ -112,7 +112,7 @@ func TestImageBuild(t *testing.T) {
 	sort.Strings(expectedTags)
 
 	dockerClient := new(MockDockerClient)
-	err = buildImage(dockerClient, &image, buildConfig)
+	err = BuildImage(dockerClient, &image, buildConfig)
 	if err != nil {
 		t.Error(err)
 	}
@@ -185,7 +185,7 @@ func TestPushImage(t *testing.T) {
 	sort.Strings(expectedTags)
 
 	dockerClient := new(MockDockerClient)
-	err = pushImage(dockerClient, &image, buildConfig)
+	err = PushImage(dockerClient, &image, buildConfig)
 	if err != nil {
 		t.Error(err)
 	}

image_tree.go → pkg/cake/image_tree.go

@@ -1,4 +1,4 @@
-package main
+package cake
 
 import (
 	"errors"
@@ -68,7 +68,7 @@ func getTagSuffixStr(image Image) string {
 
 // Transforms list of config items into independent Tree nodes.
 // Checks for duplicate IDs and multiple parents (images with no parent defined)
-func transformConfigToImages(config BuildConfig) (images map[string]*Image, err error) {
+func TransformConfigToImages(config BuildConfig) (images map[string]*Image, err error) {
 	imageMap := make(map[string]*Image)
 	var baseImage *Image
 	for _, imageConfig := range config.Images {
@@ -94,7 +94,7 @@ func transformConfigToImages(config BuildConfig) (images map[string]*Image, err
 }
 
 // Constructs a tree/DAG of images and performs cycle detection check and orphaned images check
-func createImageBuildGraph(images map[string]*Image) (image *Image, err error) {
+func CreateImageBuildGraph(images map[string]*Image) (image *Image, err error) {
 	// using sorted slice of image ids to maintain consistent building of the target graph
 	// which can not be achieved by iterating over the map due to random iteration order
 	var ids []string
@@ -153,7 +153,7 @@ func createImageBuildGraph(images map[string]*Image) (image *Image, err error) {
 	return root, nil
 }
 
-func walkBuildGraph(graph *Image, apply func(image *Image)) {
+func WalkBuildGraph(graph *Image, apply func(image *Image)) {
 	queue := []*Image{graph}
 	for {
 		if len(queue) == 0 {