Helm-generator - seedcode delivery for helm chart generation tool from component spec

Issue-ID: DCAEGEN2-2694
Change-Id: I3e317e312f90b061c0cdff155b8673967aea414b
Signed-off-by: Dhrumin Desai <dd303q@att.com>

1 files changed, 108 insertions, 0 deletions

diff --git a/mod2/helm-generator/helmchartgenerator-core/src/main/java/org/onap/dcaegen2/platform/helmchartgenerator/validation/ComponentSpecValidatorImpl.java b/mod2/helm-generator/helmchartgenerator-core/src/main/java/org/onap/dcaegen2/platform/helmchartgenerator/validation/ComponentSpecValidatorImpl.java
new file mode 100644
index 0000000..a74cab1
--- /dev/null
+++ b/mod2/helm-generator/helmchartgenerator-core/src/main/java/org/onap/dcaegen2/platform/helmchartgenerator/validation/ComponentSpecValidatorImpl.java
@@ -0,0 +1,108 @@
+/*
+ * # ============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 lombok.extern.slf4j.Slf4j;
+import org.apache.commons.io.FileUtils;
+import org.everit.json.schema.Schema;
+import org.everit.json.schema.loader.SchemaLoader;
+import org.json.JSONObject;
+import org.json.JSONTokener;
+import org.onap.dcaegen2.platform.helmchartgenerator.Utils;
+import org.onap.dcaegen2.platform.helmchartgenerator.models.componentspec.base.ComponentSpec;
+import org.springframework.core.io.ClassPathResource;
+import org.springframework.stereotype.Service;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * A class for Component specification validation.
+ * @author Dhrumin Desai
+ */
+@Service
+@Slf4j
+public class ComponentSpecValidatorImpl implements ComponentSpecValidator {
+
+    /**
+     * Validates the spec json file  against schema and prints errors if found
+     * @param specFileLocation specification json file location
+     * @param specSchemaLocation json schema file location
+     * @throws IOException
+     */
+    @Override
+    public void validateSpecFile(String specFileLocation, String specSchemaLocation) throws IOException {
+        File schemaFile = getSchemaFile(specSchemaLocation);
+        ComponentSpec cs = Utils.deserializeJsonFileToModel(specFileLocation, ComponentSpec.class);
+        validateSpecSchema(new File(specFileLocation), schemaFile);
+        validateHelmRequirements(cs);
+    }
+
+    private File getSchemaFile(String specSchemaLocation) throws IOException {
+        if(specSchemaLocation.isEmpty()){
+            return defaultSchemaFile();
+        }
+        else{
+            return new File(specSchemaLocation);
+        }
+    }
+
+    private File defaultSchemaFile() throws IOException {
+        File schemaFile = File.createTempFile("schema", ".json");
+        InputStream inputStream = new ClassPathResource("component-spec-schema.json").getInputStream();
+        FileUtils.copyInputStreamToFile(inputStream, schemaFile);
+        return schemaFile;
+    }
+
+    private void validateSpecSchema(File specFile, File schemaFile) {
+        try {
+            JSONTokener schemaData = new JSONTokener(new FileInputStream(schemaFile));
+            JSONObject jsonSchema = new JSONObject(schemaData);
+
+            JSONTokener jsonDataFile = new JSONTokener(new FileInputStream(specFile));
+            JSONObject jsonObject = new JSONObject(jsonDataFile);
+
+            Schema schemaValidator = SchemaLoader.load(jsonSchema);
+            schemaValidator.validate(jsonObject);
+        } catch (FileNotFoundException e) {
+            log.error(e.getMessage());
+            throw new RuntimeException("Specfile or Schemafile not found.");
+        }
+    }
+
+    private void validateHelmRequirements(ComponentSpec cs) {
+        checkHealthCheckSection(cs);
+        checkHelmSection(cs);
+    }
+
+    private void checkHealthCheckSection(ComponentSpec cs) {
+        if(cs.getAuxilary().getHealthcheck().getPort() == null) {
+            throw new RuntimeException("port in healthcheck section is a required field but was not found");
+        }
+    }
+
+    private void checkHelmSection(ComponentSpec cs) {
+        if(cs.getAuxilary().getHelm() == null){
+            throw new RuntimeException("helm section in component spec is required but was not found");
+        }
+    }
+}