Add configured source validation and inspection

internal/cli/source_mode.go

@@ -0,0 +1,26 @@
+package cli
+
+import (
+	"fmt"
+	"io"
+)
+
+func validateInspectModeOK(stderr io.Writer, command, path, configPath, pipelineID, bundlePath string) bool {
+	configMode := configPath != "" || pipelineID != "" || bundlePath != ""
+	if !configMode {
+		return true
+	}
+	if path != "" {
+		fmt.Fprintf(stderr, "distributor: %s does not accept a local path with --config, --pipeline, or --bundle\n", command)
+		return false
+	}
+	if configPath == "" {
+		fmt.Fprintf(stderr, "distributor: %s requires --config when --pipeline or --bundle is set\n", command)
+		return false
+	}
+	if pipelineID == "" {
+		fmt.Fprintf(stderr, "distributor: %s requires --pipeline in config mode\n", command)
+		return false
+	}
+	return true
+}