+ /**
+ * Get a property of a node
+ *
+ * @param containerName
+ * Name of the Container (Eg. 'SliceRed')
+ * @param nodeType
+ * Type of the node being programmed (Eg. 'OF')
+ * @param nodeId
+ * Node Identifier as specified by
+ * {@link org.opendaylight.controller.sal.core.Node} (Eg.
+ * '00:00:00:00:00:03:01:02')
+ * @param propertyName
+ * Name of the Property. Properties that can be deleted are
+ * description, forwarding(only in default container) and tier.
+ * @return Property value of the property
+ *
+ * <pre>
+ *
+ * Example:
+ *
+ * Request URL:
+ * http://localhost:8080/controller/nb/v2/switchmanager/default/node/OF/00:00:00:00:00:00:00:01/property/description
+ *
+ * Response body in XML
+ * <description>
+ *   <value>switch1</value>
+ * </description>
+ *
+ * Response body in JSON
+ * {
+ *   "value": "switch1"
+ * }
+ * </pre>
+ */
+
+ @Path("/{containerName}/node/{nodeType}/{nodeId}/property/{propertyName}")
+ @GET
+ @Produces({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
+ @TypeHint(String.class)
+ @StatusCodes({ @ResponseCode(code = 200, condition = "Operation successful"),
+ @ResponseCode(code = 401, condition = "User not authorized to perform this operation"),
+ @ResponseCode(code = 404, condition = "The containerName is not found"),
+ @ResponseCode(code = 503, condition = "One or more of Controller Services are unavailable") })
+ public Property getNodeProperty(@PathParam("containerName") String containerName,
+ @PathParam("nodeType") String nodeType, @PathParam("nodeId") String nodeId,
+ @PathParam("propertyName") String propertyName) {
+
+ if (!isValidContainer(containerName)) {
+ throw new ResourceNotFoundException("Container " + containerName + " does not exist.");
+ }
+ if (!NorthboundUtils.isAuthorized(getUserName(), containerName, Privilege.READ, this)) {
+ throw new UnauthorizedException("User is not authorized to perform this operation on container "
+ + containerName);
+ }
+ ISwitchManager switchManager = getIfSwitchManagerService(containerName);
+ if (switchManager == null) {
+ throw new ServiceUnavailableException("Switch Manager " + RestMessages.SERVICEUNAVAILABLE.toString());
+ }
+
+ handleNodeAvailability(containerName, nodeType, nodeId);
+ Node node = Node.fromString(nodeType, nodeId);
+ if (node == null) {
+ throw new ResourceNotFoundException(nodeId + " : " + RestMessages.NONODE.toString());
+ }
+ SwitchConfig switchConfig = switchManager.getSwitchConfig(node.toString());
+ if (switchConfig == null) {
+ throw new ResourceNotFoundException(nodeId + " : " + "Config Not Found" );
+ } else {
+ Map<String, Property> nodeProperties = new HashMap<String, Property>(switchConfig.getNodeProperties());
+ if (!nodeProperties.containsKey(propertyName.toLowerCase())) {
+ String msg = "Property " + propertyName + " does not exist or not "
+ + "configured for switch " + nodeId;
+ throw new ResourceNotFoundException(msg);
+ } else {
+ return nodeProperties.get(propertyName.toLowerCase());
+ }
+ }
+ }
+