feat: add patch object to plugin (#10)

Co-authored-by: David Vader <[email protected]>

cmd/vela-kubernetes/patch.go

@@ -0,0 +1,29 @@
+// Copyright (c) 2020 Target Brands, Inc. All rights reserved.
+//
+// Use of this source code is governed by the LICENSE file in this repository.
+
+package main
+
+import (
+	"fmt"
+
+	"github.com/sirupsen/logrus"
+)
+
+// Patch represents the plugin configuration for Patch config information.
+type Patch struct {
+	// container images from files to patch
+	Images []string
+}
+
+// Validate verifies the Patch is properly configured.
+func (p *Patch) Validate() error {
+	logrus.Trace("validating config configuration")
+
+	// verify images are provided
+	if len(p.Images) == 0 {
+		return fmt.Errorf("no config images provided")
+	}
+
+	return nil
+}

cmd/vela-kubernetes/patch_test.go

@@ -0,0 +1,31 @@
+// Copyright (c) 2020 Target Brands, Inc. All rights reserved.
+//
+// Use of this source code is governed by the LICENSE file in this repository.
+
+package main
+
+import (
+	"testing"
+)
+
+func TestKubernetes_Patch_Validate(t *testing.T) {
+	// setup types
+	p := &Patch{
+		Images: []string{"images"},
+	}
+
+	err := p.Validate()
+	if err != nil {
+		t.Errorf("Validate returned err: %v", err)
+	}
+}
+
+func TestKubernetes_Patch_Validate_NoImages(t *testing.T) {
+	// setup types
+	p := &Patch{}
+
+	err := p.Validate()
+	if err == nil {
+		t.Errorf("Validate should have returned err")
+	}
+}