1 files changed, 60 insertions, 0 deletions
diff --git a/mod2/helm-generator/helmchartgenerator-core/src/main/java/org/onap/dcaegen2/platform/helmchartgenerator/validation/ChartTemplateStructureValidator.java b/mod2/helm-generator/helmchartgenerator-core/src/main/java/org/onap/dcaegen2/platform/helmchartgenerator/validation/ChartTemplateStructureValidator.java
new file mode 100644
index 0000000..796ee91
--- /dev/null
+++ b/mod2/helm-generator/helmchartgenerator-core/src/main/java/org/onap/dcaegen2/platform/helmchartgenerator/validation/ChartTemplateStructureValidator.java
@@ -0,0 +1,60 @@
+/*
+ * # ============LICENSE_START=======================================================
+ * # Copyright (c) 2021 AT&T Intellectual Property. All rights reserved.
+ * # ================================================================================
+ * # Licensed under the Apache License, Version 2.0 (the "License");
+ * # you may not use this file except in compliance with the License.
+ * # You may obtain a copy of the License at
+ * #
+ * #      http://www.apache.org/licenses/LICENSE-2.0
+ * #
+ * # Unless required by applicable law or agreed to in writing, software
+ * # distributed under the License is distributed on an "AS IS" BASIS,
+ * # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * # See the License for the specific language governing permissions and
+ * # limitations under the License.
+ * # ============LICENSE_END=========================================================
+ */
+
+package org.onap.dcaegen2.platform.helmchartgenerator.validation;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+/**
+ * A class to validate structure of the base helm directory
+ */
+public class ChartTemplateStructureValidator {
+
+    /**
+     * validates base helm chart directory and throws error if the structure is not proper.
+     * @param chartTemplateLocation base helm chart dir location
+     */
+    public static void validateChartTemplateStructure(String chartTemplateLocation) {
+        checkBaseDirectory(chartTemplateLocation);
+    }
+
+    private static void checkBaseDirectory(String chartTemplateLocation) {
+        Path base = Paths.get(chartTemplateLocation, "base");
+        Path charts = Paths.get(chartTemplateLocation, "base/charts");
+        Path templates = Paths.get(chartTemplateLocation, "base/templates");
+        Path chart = Paths.get(chartTemplateLocation, "base/Chart.yaml");
+        Path values = Paths.get(chartTemplateLocation, "base/values.yaml");
+        if(!Files.exists(base)){
+            throw new RuntimeException("base directory not found in chart template location");
+        }
+        if(!Files.exists(charts)){
+            throw new RuntimeException("charts directory not found in base directory");
+        }
+        if(!Files.exists(templates)){
+            throw new RuntimeException("templates directory not found in base directory");
+        }
+        if(!Files.exists(chart)){
+            throw new RuntimeException("chart.yaml not found in base directory");
+        }
+        if(!Files.exists(values)){
+            throw new RuntimeException("values.yaml not found in base directory");
+        }
+    }
+}