1 files changed, 77 insertions, 0 deletions
diff --git a/src/main/java/org/onap/dcae/SchemaValidator.java b/src/main/java/org/onap/dcae/SchemaValidator.java
new file mode 100644
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+++ b/src/main/java/org/onap/dcae/SchemaValidator.java
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+/*
+ * ============LICENSE_START=======================================================
+ * PROJECT
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * Copyright (C) 2018 Nokia. All rights reserved.s
+ * ================================================================================
+ * 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;
+
+import com.fasterxml.jackson.core.JsonParseException;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.github.fge.jackson.JsonLoader;
+import com.github.fge.jsonschema.core.exceptions.ProcessingException;
+import com.github.fge.jsonschema.core.report.ProcessingMessage;
+import com.github.fge.jsonschema.core.report.ProcessingReport;
+import com.github.fge.jsonschema.main.JsonSchema;
+import com.github.fge.jsonschema.main.JsonSchemaFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.IOException;
+
+public class SchemaValidator {
+
+    private static final Logger log = LoggerFactory.getLogger(SchemaValidator.class);
+
+    //refactor in next iteration
+    public static String validateAgainstSchema(String jsonData, String jsonSchema) {
+        ProcessingReport report;
+        String result = "false";
+
+        try {
+            log.trace("Schema validation for event:" + jsonData);
+            JsonNode schemaNode = JsonLoader.fromString(jsonSchema);
+            JsonNode data = JsonLoader.fromString(jsonData);
+            JsonSchemaFactory factory = JsonSchemaFactory.byDefault();
+            JsonSchema schema = factory.getJsonSchema(schemaNode);
+            report = schema.validate(data);
+        } catch (JsonParseException e) {
+            log.error("validateAgainstSchema:JsonParseException for event:" + jsonData);
+            return e.getMessage();
+        } catch (ProcessingException e) {
+            log.error("validateAgainstSchema:Processing exception for event:" + jsonData);
+            return e.getMessage();
+        } catch (IOException e) {
+            log.error(
+                    "validateAgainstSchema:IO exception; something went wrong trying to read json data for event:" + jsonData);
+            return e.getMessage();
+        }
+        if (report != null) {
+            for (ProcessingMessage pm : report) {
+                log.trace("Processing Message: " + pm.getMessage());
+            }
+            result = String.valueOf(report.isSuccess());
+        }
+        try {
+            log.debug("Validation Result:" + result + " Validation report:" + report);
+        } catch (NullPointerException e) {
+            log.error("validateAgainstSchema:NullpointerException on report");
+        }
+        return result;
+    }
+}