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-rw-r--r--utils/src/main/java/org/onap/policy/common/utils/coder/StandardCoder.java11
-rw-r--r--utils/src/main/java/org/onap/policy/common/utils/coder/StandardValCoder.java110
2 files changed, 115 insertions, 6 deletions
diff --git a/utils/src/main/java/org/onap/policy/common/utils/coder/StandardCoder.java b/utils/src/main/java/org/onap/policy/common/utils/coder/StandardCoder.java
index e84a92f2..26746b79 100644
--- a/utils/src/main/java/org/onap/policy/common/utils/coder/StandardCoder.java
+++ b/utils/src/main/java/org/onap/policy/common/utils/coder/StandardCoder.java
@@ -1,8 +1,8 @@
/*
* ============LICENSE_START=======================================================
- * ONAP PAP
+ * ONAP
* ================================================================================
- * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
+ * Copyright (C) 2019-2020 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.
@@ -78,7 +78,7 @@ public class StandardCoder implements Coder {
try {
toJson(target, object);
- } catch (RuntimeException | IOException e) {
+ } catch (RuntimeException e) {
throw new CoderException(e);
}
}
@@ -238,9 +238,8 @@ public class StandardCoder implements Coder {
*
* @param target target to which to write the encoded json
* @param object object to be encoded
- * @throws IOException if an I/O error occurs
*/
- protected void toJson(Writer target, Object object) throws IOException {
+ protected void toJson(Writer target, Object object) {
GSON.toJson(object, object.getClass(), target);
}
@@ -286,7 +285,7 @@ public class StandardCoder implements Coder {
* @param value value to be converted
* @return the converted value
*/
- private <T> T convertFromDouble(Class<T> clazz, T value) {
+ protected <T> T convertFromDouble(Class<T> clazz, T value) {
if (clazz != Object.class) {
return value;
}
diff --git a/utils/src/main/java/org/onap/policy/common/utils/coder/StandardValCoder.java b/utils/src/main/java/org/onap/policy/common/utils/coder/StandardValCoder.java
new file mode 100644
index 00000000..378254b8
--- /dev/null
+++ b/utils/src/main/java/org/onap/policy/common/utils/coder/StandardValCoder.java
@@ -0,0 +1,110 @@
+/*
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2020 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.common.utils.coder;
+
+import com.worldturner.medeia.api.JsonSchemaVersion;
+import com.worldturner.medeia.api.SchemaSource;
+import com.worldturner.medeia.api.StringSchemaSource;
+import com.worldturner.medeia.api.ValidationFailedException;
+import com.worldturner.medeia.api.gson.MedeiaGsonApi;
+import com.worldturner.medeia.schema.validation.SchemaValidator;
+import java.io.Reader;
+import java.io.StringReader;
+import java.io.StringWriter;
+import java.io.Writer;
+import lombok.NonNull;
+import lombok.ToString;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Extension to the StandardCoder to support streaming validation
+ * against a Draft-07 Json schema specification.
+ */
+
+@ToString
+public class StandardValCoder extends StandardCoder {
+
+ // The medeia-validator library integrates better than
+ // other libraries considered with GSON, and therefore
+ // the StandardCoder.
+
+ private static final Logger logger = LoggerFactory.getLogger(StandardValCoder.class);
+
+ private final MedeiaGsonApi validatorApi = new MedeiaGsonApi();
+ private final SchemaValidator validator;
+
+ /**
+ * StandardCoder with validation.
+ */
+ public StandardValCoder(@NonNull String jsonSchema, @NonNull String name) {
+ SchemaSource schemaSource =
+ new StringSchemaSource(jsonSchema, JsonSchemaVersion.DRAFT07, null, name);
+ this.validator = validatorApi.loadSchema(schemaSource);
+ }
+
+ @Override
+ protected String toJson(@NonNull Object object) {
+ StringWriter output = new StringWriter();
+ toJson(output, object);
+ return String.valueOf(output);
+ }
+
+ @Override
+ protected void toJson(@NonNull Writer target, @NonNull Object object) {
+ getGSON().toJson(object, object.getClass(), validatorApi.createJsonWriter(validator, target));
+ }
+
+ @Override
+ protected <T> T fromJson(@NonNull Reader source, @NonNull Class<T> clazz) {
+ return convertFromDouble(clazz, getGSON().fromJson(validatorApi.createJsonReader(validator, source), clazz));
+ }
+
+ @Override
+ protected <T> T fromJson(String json, Class<T> clazz) {
+ StringReader reader = new StringReader(json);
+ return convertFromDouble(clazz, getGSON().fromJson(validatorApi.createJsonReader(validator, reader), clazz));
+ }
+
+ /**
+ * Is the json conformant?.
+ */
+ public boolean isConformant(@NonNull String json) {
+ try {
+ conformance(json);
+ } catch (CoderException e) {
+ logger.info("JSON is not conformant to schema {}", e);
+ return false;
+ }
+ return true;
+ }
+
+ /**
+ * Check a json string for conformance against its schema definition.
+ */
+ public void conformance(@NonNull String json) throws CoderException {
+ try {
+ validatorApi.parseAll(validatorApi.createJsonReader(validator, new StringReader(json)));
+ } catch (ValidationFailedException e) {
+ throw new CoderException(e);
+ }
+ }
+}