1 files changed, 75 insertions, 0 deletions
diff --git a/src/main/java/org/onap/dcae/common/validator/GeneralEventValidator.java b/src/main/java/org/onap/dcae/common/validator/GeneralEventValidator.java
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+++ b/src/main/java/org/onap/dcae/common/validator/GeneralEventValidator.java
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+/*
+ * ============LICENSE_START=======================================================
+ * PROJECT
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * Copyright (C) 2020 Nokia. 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.dcae.common.validator;
+
+import com.networknt.schema.JsonSchema;
+import org.onap.dcae.ApplicationSettings;
+import org.onap.dcae.common.model.VesEvent;
+import org.onap.dcae.restapi.ApiException;
+import org.onap.dcae.restapi.EventValidatorException;
+
+/**
+ * This class is using ApplicationSetting and SchemaValidator to validate VES event.
+ *
+ * @author Zebek
+ */
+public class GeneralEventValidator {
+
+    private final SchemaValidator schemaValidator;
+    private final ApplicationSettings applicationSettings;
+
+    public GeneralEventValidator(ApplicationSettings applicationSettings) {
+        this(applicationSettings, new SchemaValidator());
+    }
+
+    GeneralEventValidator(ApplicationSettings applicationSettings, SchemaValidator schemaValidator) {
+        this.applicationSettings = applicationSettings;
+        this.schemaValidator = schemaValidator;
+    }
+
+    /**
+     * This method is validating given event using schema adn throws exception if event is not valid
+     *
+     * @param vesEvent event that will be validate
+     * @param type     expected type of event
+     * @param version  json schema version that will be used
+     * @throws EventValidatorException when event is not valid or have wrong type
+     */
+    public void validate(VesEvent vesEvent, String type, String version) throws EventValidatorException {
+        if (applicationSettings.eventSchemaValidationEnabled()) {
+            doValidation(vesEvent, type, version);
+        }
+    }
+
+    private void doValidation(VesEvent vesEvent, String type, String version) throws EventValidatorException {
+        if (vesEvent.hasType(type)) {
+            if (!isEventMatchToSchema(vesEvent, applicationSettings.jsonSchema(version))) {
+                throw new EventValidatorException(ApiException.SCHEMA_VALIDATION_FAILED);
+            }
+        } else {
+            throw new EventValidatorException(ApiException.INVALID_JSON_INPUT);
+        }
+    }
+
+    private boolean isEventMatchToSchema(VesEvent vesEvent, JsonSchema schema) {
+        return schemaValidator.conformsToSchema(vesEvent.asJsonObject(), schema);
+    }
+}