updated jackson-databind and changed json schema validator library

Issue-ID: DCAEGEN2-1825
Signed-off-by: Pawel <pawel.kasperkiewicz@nokia.com>
Change-Id: Ia4c9c6286adcf84631a58f9d5bfef124fed1cee6

4 files changed, 129 insertions, 66 deletions

diff --git a/src/main/java/org/onap/dcae/ApplicationSettings.java b/src/main/java/org/onap/dcae/ApplicationSettings.java
index 5164f878..1e9ae698 100644
--- a/src/main/java/org/onap/dcae/ApplicationSettings.java
+++ b/src/main/java/org/onap/dcae/ApplicationSettings.java
@@ -3,7 +3,7 @@
  * PROJECT
  * ================================================================================
  * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
- * Copyright (C) 2018 Nokia. All rights reserved.s
+ * Copyright (C) 2018 - 2019 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.
@@ -21,31 +21,21 @@
 
 package org.onap.dcae;
 
-import static io.vavr.API.Tuple;
-import static java.lang.String.format;
-import static java.nio.file.Files.readAllBytes;
-
-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.main.JsonSchema;
-import com.github.fge.jsonschema.main.JsonSchemaFactory;
 import com.google.common.annotations.VisibleForTesting;
+import com.networknt.schema.JsonSchema;
 import io.vavr.Function1;
-import io.vavr.Tuple2;
 import io.vavr.collection.HashMap;
 import io.vavr.collection.List;
 import io.vavr.collection.Map;
-import java.io.IOException;
-import java.nio.file.Path;
-import java.nio.file.Paths;
-import javax.annotation.Nullable;
 import org.apache.commons.configuration.ConfigurationException;
 import org.apache.commons.configuration.PropertiesConfiguration;
-import org.json.JSONObject;
 import org.onap.dcae.common.configuration.AuthMethodType;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import javax.annotation.Nullable;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import static java.lang.String.format;
 
 /**
  * Abstraction over application configuration.
@@ -58,6 +48,7 @@ public class ApplicationSettings {
     private final String appInvocationDir;
     private final String configurationFileLocation;
     private final PropertiesConfiguration properties = new PropertiesConfiguration();
+    private final JSonSchemasSupplier jSonSchemasSupplier = new JSonSchemasSupplier();
     private final Map<String, JsonSchema> loadedJsonSchemas;
 
     public ApplicationSettings(String[] args, Function1<String[], Map<String, String>> argsParser) {
@@ -71,7 +62,9 @@ public class ApplicationSettings {
         configurationFileLocation = findOutConfigurationFileLocation(parsedArgs);
         loadPropertiesFromFile();
         parsedArgs.filterKeys(k -> !"c".equals(k)).forEach(this::addOrUpdate);
-        loadedJsonSchemas = loadJsonSchemas();
+        String collectorSchemaFile = properties.getString("collector.schema.file",
+                format("{\"%s\":\"etc/CommonEventFormat_28.4.1.json\"}", FALLBACK_VES_VERSION));
+        loadedJsonSchemas = jSonSchemasSupplier.loadJsonSchemas(collectorSchemaFile);
     }
 
     public void reloadProperties() {
@@ -187,24 +180,6 @@ public class ApplicationSettings {
         return prependWithUserDirOnRelative(parsedArgs.get("c").getOrElse("etc/collector.properties"));
     }
 
-    private Map<String, JsonSchema> loadJsonSchemas() {
-        return jsonSchema().toMap().entrySet().stream()
-            .map(this::readSchemaForVersion)
-            .collect(HashMap.collector());
-    }
-
-    private Tuple2<String, JsonSchema> readSchemaForVersion(java.util.Map.Entry<String, Object> versionToFilePath) {
-        try {
-            String schemaContent = new String(
-                readAllBytes(Paths.get(versionToFilePath.getValue().toString())));
-            JsonNode schemaNode = JsonLoader.fromString(schemaContent);
-            JsonSchema schema = JsonSchemaFactory.byDefault().getJsonSchema(schemaNode);
-            return Tuple(versionToFilePath.getKey(), schema);
-        } catch (IOException | ProcessingException e) {
-            throw new ApplicationException("Could not read schema from path: " + versionToFilePath.getValue(), e);
-        }
-    }
-
     private Map<String, String> prepareUsersMap(@Nullable String allowedUsers) {
         return allowedUsers == null ? HashMap.empty()
             : List.of(allowedUsers.split("\\|"))
@@ -212,11 +187,6 @@ public class ApplicationSettings {
                 .toMap(t-> t[0].trim(), t -> t[1].trim());
     }
 
-    private JSONObject jsonSchema() {
-        return new JSONObject(properties.getString("collector.schema.file",
-                format("{\"%s\":\"etc/CommonEventFormat_28.4.1.json\"}", FALLBACK_VES_VERSION)));
-    }
-
     private Map<String, String[]> convertDMaaPStreamsPropertyToMap(String streamIdsProperty) {
         java.util.HashMap<String, String[]> domainToStreamIdsMapping = new java.util.HashMap<>();
         String[] topics = streamIdsProperty.split("\\|");
diff --git a/src/main/java/org/onap/dcae/JSonSchemasSupplier.java b/src/main/java/org/onap/dcae/JSonSchemasSupplier.java
new file mode 100644
index 00000000..d7cd5663
--- /dev/null
+++ b/src/main/java/org/onap/dcae/JSonSchemasSupplier.java
@@ -0,0 +1,58 @@
+/*

+ * ============LICENSE_START=======================================================

+ * PROJECT

+ * ================================================================================

+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.

+ * Copyright (C) 2019 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.networknt.schema.JsonSchema;

+import com.networknt.schema.JsonSchemaFactory;

+import io.vavr.Tuple2;

+import io.vavr.collection.HashMap;

+import io.vavr.collection.Map;

+import org.json.JSONObject;

+

+import java.io.IOException;

+import java.nio.file.Paths;

+

+import static io.vavr.API.Tuple;

+import static java.nio.file.Files.readAllBytes;

+

+class JSonSchemasSupplier {

+

+    public Map<String, JsonSchema> loadJsonSchemas(String collectorSchemaFile) {

+        JSONObject jsonObject = new JSONObject(collectorSchemaFile);

+        return jsonObject.toMap().entrySet().stream()

+            .map(JSonSchemasSupplier::readSchemaForVersion)

+            .collect(HashMap.collector());

+    }

+

+

+    private static Tuple2<String, JsonSchema> readSchemaForVersion(java.util.Map.Entry<String, Object> versionToFilePath) {

+        try {

+            String schemaContent = new String(

+                readAllBytes(Paths.get(versionToFilePath.getValue().toString())));

+            JsonSchemaFactory factory = JsonSchemaFactory.getInstance();

+            JsonSchema schema = factory.getSchema(schemaContent);

+

+            return Tuple(versionToFilePath.getKey(), schema);

+        } catch (IOException e) {

+            throw new ApplicationException("Could not read schema from path: " + versionToFilePath.getValue(), e);

+        }

+    }

+}

diff --git a/src/main/java/org/onap/dcae/restapi/EventValidator.java b/src/main/java/org/onap/dcae/restapi/EventValidator.java
index f119b507..009247c0 100644
--- a/src/main/java/org/onap/dcae/restapi/EventValidator.java
+++ b/src/main/java/org/onap/dcae/restapi/EventValidator.java
@@ -20,23 +20,15 @@
  */
 package org.onap.dcae.restapi;
 
-import static java.util.stream.StreamSupport.stream;
-
-import com.github.fge.jackson.JsonLoader;
-import com.github.fge.jsonschema.core.report.ProcessingReport;
-import com.github.fge.jsonschema.main.JsonSchema;
-import java.util.Optional;
 import org.json.JSONObject;
-import org.onap.dcae.ApplicationException;
 import org.onap.dcae.ApplicationSettings;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.http.ResponseEntity;
-
+import java.util.Optional;
 public class EventValidator {
 
-  private static final Logger log = LoggerFactory.getLogger(EventValidator.class);
-
+  private final SchemaValidator schemaValidator = new SchemaValidator();
   private ApplicationSettings applicationSettings;
 
   public EventValidator(ApplicationSettings applicationSettings) {
@@ -46,7 +38,7 @@ public class EventValidator {
   public Optional<ResponseEntity<String>> validate(JSONObject jsonObject, String type, String version){
     if (applicationSettings.jsonSchemaValidationEnabled()) {
       if (jsonObject.has(type)) {
-        if (!conformsToSchema(jsonObject, version)) {
+        if (!schemaValidator.conformsToSchema(jsonObject, applicationSettings.jsonSchema(version))) {
           return errorResponse(ApiException.SCHEMA_VALIDATION_FAILED);
         }
       } else {
@@ -56,21 +48,6 @@ public class EventValidator {
     return Optional.empty();
   }
 
-  private boolean conformsToSchema(JSONObject payload, String version) {
-    try {
-      JsonSchema schema = applicationSettings.jsonSchema(version);
-      ProcessingReport report = schema.validate(JsonLoader.fromString(payload.toString()));
-      if (report.isSuccess()) {
-        return true;
-      }
-      log.warn("Schema validation failed for event: " + payload);
-      stream(report.spliterator(), false).forEach(e -> log.warn(e.getMessage()));
-      return false;
-    } catch (Exception e) {
-      throw new ApplicationException("Unable to validate against schema", e);
-    }
-  }
-
   private Optional<ResponseEntity<String>> errorResponse(ApiException noServerResources) {
     return Optional.of(ResponseEntity.status(noServerResources.httpStatusCode)
         .body(noServerResources.toJSON().toString()));
diff --git a/src/main/java/org/onap/dcae/restapi/SchemaValidator.java b/src/main/java/org/onap/dcae/restapi/SchemaValidator.java
new file mode 100644
index 00000000..94638071
--- /dev/null
+++ b/src/main/java/org/onap/dcae/restapi/SchemaValidator.java
@@ -0,0 +1,58 @@
+/*

+ * ============LICENSE_START=======================================================

+ * PROJECT

+ * ================================================================================

+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.

+ * Copyright (C) 2019 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.restapi;

+

+

+import com.fasterxml.jackson.databind.JsonNode;

+import com.fasterxml.jackson.databind.ObjectMapper;

+import com.networknt.schema.JsonSchema;

+import com.networknt.schema.ValidationMessage;

+import org.json.JSONObject;

+import org.onap.dcae.ApplicationException;

+import org.slf4j.Logger;

+import org.slf4j.LoggerFactory;

+

+import java.util.Set;

+

+class SchemaValidator {

+    public static final Logger log = LoggerFactory.getLogger(SchemaValidator.class);

+

+    public boolean conformsToSchema(JSONObject payload, JsonSchema schema) {

+        try {

+            ObjectMapper mapper = new ObjectMapper();

+

+            String content = payload.toString();

+            JsonNode node = mapper.readTree(content);

+            Set<ValidationMessage> messageSet = schema.validate(node);

+

+            if (messageSet.isEmpty()) {

+                return true;

+            }

+

+            log.warn("Schema validation failed for event: " + payload);

+            messageSet.stream().forEach(it->log.warn(it.getMessage()) );

+

+            return false;

+        } catch (Exception e) {

+            throw new ApplicationException("Unable to validate against schema", e);

+        }

+    }

+}