[ONOS-5465][TE Tunnel SB Provider] Interaction with ONOS core TE subsystems for TE tunnel updates
Change-Id: I2cb7ed7731192228a5f6ef4c4b6c3a14a7175732
diff --git a/providers/ietfte/utils/src/main/java/org/onosproject/provider/te/utils/CodecTools.java b/providers/ietfte/utils/src/main/java/org/onosproject/provider/te/utils/CodecTools.java
new file mode 100644
index 0000000..d5213ae
--- /dev/null
+++ b/providers/ietfte/utils/src/main/java/org/onosproject/provider/te/utils/CodecTools.java
@@ -0,0 +1,95 @@
+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * 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.
+ */
+
+package org.onosproject.provider.te.utils;
+
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.ObjectWriter;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import org.slf4j.Logger;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+import static org.slf4j.LoggerFactory.getLogger;
+
+
+/**
+ * Convert utility methods for IETF SB.
+ */
+public final class CodecTools {
+ private static final Logger log = getLogger(CodecTools.class);
+ private static final ObjectMapper MAPPER = new ObjectMapper();
+
+ //no instantiation
+ private CodecTools() {
+ }
+
+ /**
+ * Returns an object node from a InputStream type input which usually comes
+ * from the HTTP response.
+ *
+ * @param stream stream data comes from a HTTP response
+ * @return object node
+ */
+ public static ObjectNode toJson(InputStream stream) {
+ ObjectNode response = null;
+ try {
+ response = (ObjectNode) MAPPER.readTree(stream);
+ } catch (IOException e) {
+ log.error("Parse json string failed {}", e.getMessage());
+ }
+
+ return response;
+ }
+
+ /**
+ * Returns an object node from a string.
+ *
+ * @param jsonString string with JSON format
+ * @return object node
+ */
+ public static ObjectNode toJson(String jsonString) {
+ ObjectNode response = null;
+ try {
+ response = (ObjectNode) MAPPER.readTree(jsonString);
+ } catch (IOException e) {
+ log.error("Parse json string failed {}", e.getMessage());
+ }
+
+ return response;
+ }
+
+ /**
+ * Returns a JSON format string from a Jackson object node.
+ *
+ * @param node JSON object node
+ * @return string with JSON format
+ */
+ public static String jsonToString(ObjectNode node) {
+ ObjectWriter ow = new ObjectMapper().writer().withDefaultPrettyPrinter();
+ String jsonString = null;
+ try {
+ jsonString = ow.writeValueAsString(node);
+ } catch (JsonProcessingException e) {
+ log.error("Parse json to string failed {}", e.getMessage());
+ }
+
+ return jsonString;
+ }
+}