Bug 164

[controller.git] / opendaylight / md-sal / sal-rest-connector / src / main / java / org / opendaylight / controller / sal / restconf / impl / BrokerFacade.xtend

diff --git a/opendaylight/md-sal/sal-rest-connector/src/main/java/org/opendaylight/controller/sal/restconf/impl/BrokerFacade.xtend b/opendaylight/md-sal/sal-rest-connector/src/main/java/org/opendaylight/controller/sal/restconf/impl/BrokerFacade.xtend
index e4cff4d6b14d54c93a80509d70fd386fc8477018..eb1f6165ca23c5bb17deac73f575a06bfc57fc57 100644 (file)
--- a/opendaylight/md-sal/sal-rest-connector/src/main/java/org/opendaylight/controller/sal/restconf/impl/BrokerFacade.xtend
+++ b/opendaylight/md-sal/sal-rest-connector/src/main/java/org/opendaylight/controller/sal/restconf/impl/BrokerFacade.xtend
@@ -1,8 +1,11 @@
 package org.opendaylight.controller.sal.restconf.impl
 
+import javax.ws.rs.WebApplicationException
+import javax.ws.rs.core.Response
 import org.opendaylight.controller.md.sal.common.api.data.DataReader
 import org.opendaylight.controller.sal.core.api.Broker.ConsumerSession
 import org.opendaylight.controller.sal.core.api.data.DataBrokerService
+import org.opendaylight.controller.sal.rest.impl.RestconfProvider
 import org.opendaylight.yangtools.yang.common.QName
 import org.opendaylight.yangtools.yang.common.RpcResult
 import org.opendaylight.yangtools.yang.data.api.CompositeNode
@@ -10,34 +13,58 @@ import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier
 
 class BrokerFacade implements DataReader<InstanceIdentifier, CompositeNode> {
 
+    val static BrokerFacade INSTANCE = new BrokerFacade
+
     @Property
     private ConsumerSession context;
-    
+
     @Property
     private DataBrokerService dataService;
     
+    private new() {
+        if (INSTANCE !== null) {
+            throw new IllegalStateException("Already instantiated");
+        }
+    }
+
+    def static BrokerFacade getInstance() {
+        return INSTANCE
+    }
+
+    private def void checkPreconditions() {
+        if (context === null || dataService === null) {
+            throw new WebApplicationException(Response.status(Response.Status.SERVICE_UNAVAILABLE)
+                    .entity(RestconfProvider::NOT_INITALIZED_MSG).build())
+        }
+    }
+
     override readConfigurationData(InstanceIdentifier path) {
+        checkPreconditions
         return dataService.readConfigurationData(path);
     }
 
     override readOperationalData(InstanceIdentifier path) {
+        checkPreconditions
         return dataService.readOperationalData(path);
     }
-    
+
     def RpcResult<CompositeNode> invokeRpc(QName type, CompositeNode payload) {
+        checkPreconditions
         val future = context.rpc(type, payload);
         return future.get;
     }
-    
-    def commitConfigurationDataUpdate(InstanceIdentifier path, CompositeNode payload) {
+
+    def commitConfigurationDataPut(InstanceIdentifier path, CompositeNode payload) {
+        checkPreconditions
         val transaction = dataService.beginTransaction;
         transaction.putConfigurationData(path, payload);
         return transaction.commit()
     }
-    
-    def commitConfigurationDataCreate(InstanceIdentifier path, CompositeNode payload) {
+
+    def commitOperationalDataPut(InstanceIdentifier path, CompositeNode payload) {
+        checkPreconditions
         val transaction = dataService.beginTransaction;
-        transaction.putConfigurationData(path, payload);
+        transaction.putOperationalData(path, payload);
         return transaction.commit()
     }