Method writeProfileDScript

src/java/jres/zing.go:165–193

writeProfileDScript creates the java.sh profile.d script This script sets JAVA_HOME, JRE_HOME, and updates PATH at application runtime

()

// writeProfileDScript creates the java.sh profile.d script
// This script sets JAVA_HOME, JRE_HOME, and updates PATH at application runtime
func (z *ZingJRE) writeProfileDScript() error {
	// Compute relative path from jreDir to javaHome
	relPath, err := filepath.Rel(z.jreDir, z.javaHome)
	if err != nil {
		return fmt.Errorf("failed to compute relative path: %w", err)
	}

	// Build the runtime JAVA_HOME path
	// At runtime, DEPS_DIR will point to the app's dependency directory
	javaHomePath := filepath.Join("$DEPS_DIR", "0", "jre", relPath)

	// Create the environment script content
	envContent := fmt.Sprintf(`export JAVA_HOME=%s
export JRE_HOME=$JAVA_HOME
export PATH=$JAVA_HOME/bin:$PATH
`, javaHomePath)

	// Write the profile.d script using libbuildpack API
	if err := z.ctx.Stager.WriteProfileD("java.sh", envContent); err != nil {
		return fmt.Errorf("failed to write profile.d script: %w", err)
	}

	// Also set environment for the staging process
	os.Setenv("JAVA_HOME", z.javaHome)
	os.Setenv("JRE_HOME", z.javaHome)
	os.Setenv("PATH", fmt.Sprintf("%s/bin:%s", z.javaHome, os.Getenv("PATH")))

	return nil
}