prep for actual admission/hook efforts

internal/operations/patch.go

@@ -0,0 +1,61 @@
+package operations
+
+const (
+	addOperation     = "add"
+	removeOperation  = "remove"
+	replaceOperation = "replace"
+	copyOperation    = "copy"
+	moveOperation    = "move"
+)
+
+// PatchOperation is an operation of a JSON patch https://tools.ietf.org/html/rfc6902.
+type PatchOperation struct {
+	Op    string      `json:"op"`
+	Path  string      `json:"path"`
+	From  string      `json:"from"`
+	Value interface{} `json:"value,omitempty"`
+}
+
+// AddPatchOperation returns an add JSON patch operation.
+func AddPatchOperation(path string, value interface{}) PatchOperation {
+	return PatchOperation{
+		Op:    addOperation,
+		Path:  path,
+		Value: value,
+	}
+}
+
+// RemovePatchOperation returns a remove JSON patch operation.
+func RemovePatchOperation(path string) PatchOperation {
+	return PatchOperation{
+		Op:   removeOperation,
+		Path: path,
+	}
+}
+
+// ReplacePatchOperation returns a replace JSON patch operation.
+func ReplacePatchOperation(path string, value interface{}) PatchOperation {
+	return PatchOperation{
+		Op:    replaceOperation,
+		Path:  path,
+		Value: value,
+	}
+}
+
+// CopyPatchOperation returns a copy JSON patch operation.
+func CopyPatchOperation(from, path string) PatchOperation {
+	return PatchOperation{
+		Op:   copyOperation,
+		Path: path,
+		From: from,
+	}
+}
+
+// MovePatchOperation returns a move JSON patch operation.
+func MovePatchOperation(from, path string) PatchOperation {
+	return PatchOperation{
+		Op:   moveOperation,
+		Path: path,
+		From: from,
+	}
+}