download-starter-projects functions added to Registry Library APIs (#…

…126)

Signed-off-by: Michael Valdron <[email protected]>

registry-library/README.md

@@ -122,3 +122,45 @@ Supported devfile media types can be found in the latest version of [library.go]
     }
     ```
 
+#### Download the starter project
+
+1. Download starter project in-memory
+```go
+var bytes []byte
+var err error
+
+...
+
+starterProject := "springbootproject"
+bytes, err = registryLibrary.DownloadStarterProjectAsBytes(registryURL, 
+    stack, starterProject, options)
+if err != nil {
+    return err
+}
+```
+2. Download starter project archive to filesystem path
+```go
+starterProject := "springbootproject"
+path := fmt.Sprintf("%s.zip", starterProject)
+err := registryLibrary.DownloadStarterProject(path, registryURL, stack, starterProject, options)
+if err != nil {
+    return err
+}
+```
+
+```sh
+ls # => devfile.yaml springbootproject.zip
+```
+3. Download starter project archive and extract to filesystem path
+```go
+starterProject := "springbootproject"
+path := "."
+err := registryLibrary.DownloadStarterProjectAsDir(path, registryURL, stack, starterProject, options)
+if err != nil {
+    return err
+}
+```
+
+```sh
+ls # => devfile.yaml pom.xml HELP.md mvnw mvnw.cmd src 
+```

registry-library/cmd/root.go

@@ -18,6 +18,7 @@ package cmd
 import (
 	"fmt"
 	"os"
+	"path/filepath"
 
 	"github.com/spf13/cobra"
 
@@ -147,7 +148,34 @@ func init() {
 	listCmd.Flags().BoolVar(&skipTLSVerify, "skip-tls-verify", false, "skip TLS verification")
 	listCmd.Flags().StringVar(&user, "user", "", "consumer name")
 
-	rootCmd.AddCommand(pullCmd, listCmd)
+	var downloadCmd = &cobra.Command{
+		Use:   "download <registry name> <stack name> <starter project name>",
+		Short: "Downloads starter project",
+		Args:  cobra.ExactArgs(3),
+		Run: func(cmd *cobra.Command, args []string) {
+			registry, stack, starterProject := args[0], args[1], args[2]
+			var err error
+
+			options := library.RegistryOptions{
+				NewIndexSchema: newIndexSchema,
+				Telemetry: library.TelemetryData{
+					User: "user",
+				},
+				SkipTLSVerify: skipTLSVerify,
+			}
+
+			err = library.DownloadStarterProjectAsDir(filepath.Join(destDir, starterProject), registry, stack, starterProject, options)
+			if err != nil {
+				fmt.Printf("failed to download starter project %s: %v\n", starterProject, err)
+			}
+		},
+	}
+	downloadCmd.Flags().StringVar(&destDir, "context", ".", "destination directory that stores stack resources")
+	downloadCmd.Flags().BoolVar(&skipTLSVerify, "skip-tls-verify", false, "skip TLS verification")
+	downloadCmd.Flags().BoolVar(&newIndexSchema, "new-index-schema", false, "use new index schema")
+	downloadCmd.Flags().StringVar(&user, "user", "", "consumer name")
+
+	rootCmd.AddCommand(pullCmd, listCmd, downloadCmd)
 }
 
 // initConfig reads in config file and ENV variables if set.

registry-library/go.mod

@@ -4,7 +4,7 @@ go 1.14
 
 require (
 	github.com/containerd/containerd v1.5.9
-	github.com/devfile/registry-support/index/generator v0.0.0-20220222194908-7a90a4214f3e
+	github.com/devfile/registry-support/index/generator v0.0.0-20220624203950-e7282a4695b6
 	github.com/hashicorp/go-version v1.4.0
 	github.com/mitchellh/go-homedir v1.1.0
 	github.com/spf13/cobra v1.2.1