Update containerless docs & reqs (#381)

update containerless docs

Signed-off-by: Emily McMullan <[email protected]>

cmd/analyze-bin.go

@@ -215,7 +215,31 @@ func (a *analyzeCommand) RunAnalysisContainerless(ctx context.Context) error {
 }
 
 func (a *analyzeCommand) ValidateContainerless(ctx context.Context) error {
-	// validate mvn and openjdk install
+	// validate mvn, python, and openjdk install
+	// windows does not use python3 as executable name
+	if runtime.GOOS == "windows" {
+		cmd := exec.Command("python", "--version")
+		output, err := cmd.Output()
+		if err != nil {
+			return err
+		}
+		version := strings.TrimSpace(string(output))
+		pythonVersionStr := strings.Split(version, " ")
+		versionStr := strings.Split(pythonVersionStr[1], ".")
+		versionInt, err := strconv.Atoi(versionStr[0])
+		if err != nil {
+			return err
+		}
+		if versionInt < 3 {
+			return fmt.Errorf("%w cannot find requirement python3; ensure python3 is installed", err)
+		}
+	} else {
+		_, pythonErr := exec.LookPath("python3")
+		if pythonErr != nil {
+			return fmt.Errorf("%w cannot find requirement python3; ensure python3 is installed", pythonErr)
+
+		}
+	}
 	_, mvnErr := exec.LookPath("mvn")
 	if mvnErr != nil {
 		return fmt.Errorf("%w cannot find requirement maven; ensure maven is installed", mvnErr)
@@ -238,6 +262,9 @@ func (a *analyzeCommand) ValidateContainerless(ctx context.Context) error {
 			return fmt.Errorf("cannot find requirement openjdk17+; ensure openjdk17+ is installed")
 		}
 	}
+	if os.Getenv("JAVA_HOME") == "" {
+		return fmt.Errorf("JAVA_HOME is not set; ensure JAVA_HOME is set")
+	}
 
 	// Validate .kantra in home directory and its content (containerless)
 	requiredDirs := []string{a.kantraDir, filepath.Join(a.kantraDir, RulesetsLocation), filepath.Join(a.kantraDir, JavaBundlesLocation), filepath.Join(a.kantraDir, JDTLSBinLocation)}

cmd/cleanup.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"os"
 	"os/exec"
+	"runtime"
 )
 
 func (a *analyzeCommand) CleanAnalysisResources(ctx context.Context) error {
@@ -83,6 +84,11 @@ func (a *analyzeCommand) RmProviderContainers(ctx context.Context) error {
 }
 
 func (a *analyzeCommand) cleanlsDirs() error {
+	// TODO clean this up for windows
+	// currently a perm issue with deleting these dirs
+	if runtime.GOOS == "windows" {
+		return nil
+	}
 	a.log.V(7).Info("removing language server dirs")
 	// this assumes dirs created in wd
 	lsDirs := []string{

docs/containerless.md

@@ -1,25 +1,30 @@
 # Run Containerless Kantra
 
-Have OpenJDK 17+ and Maven installed
+Have OpenJDK 17+, Maven, and python3 installed
+
+Have $JAVA_HOME set.
 
 ## Download kantra and requirements:
 
-Download appropriate zip for your OS [here](https://github.com/konveyor/kantra/releases/tag/v0.6.0-alpha.1) 
+Download appropriate zip for your OS [here](https://github.com/konveyor/kantra/releases/tag/v0.6.0-alpha.2) 
 
 ## Move kantra binary to your $PATH:
 
 ```sh
 mv $HOME/kantra.<os>.<arch>/<os>-kantra /usr/bin
 ```
 
-### Move requirements to kantra known location:
+### Move requirements to kantra known location, or run kantra from the current directory:
+*Note:* kantra will first look for these requirements in the current dir, and fall back to the path below.
+
 
 ```sh
 mv $HOME/kantra.<os>.<arch> $HOME/.kantra
 ```
 
 ## Run analysis:
+Kantra will default to running containerless analysis. To run analysis in containers, use the `--run-local=false` option.
 
 ```sh
-kantra analyze-bin  --input <java-app> --output <output-dir> --rules <java-rules>
+kantra analyze  --input <java-app> --output <output-dir> --rules <java-rules>
 ```