nemo-impl/src/main/java/org/opendaylight/nemo/user/vnspacemanager/structurestyle/deleteintent/DeleteFlow.java

   1 /*\r
   2  * Copyright (c) 2015 Huawei, Inc. and others. All rights reserved.\r
   3  *\r
   4  * This program and the accompanying materials are made available under the\r
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,\r
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html\r
   7  */\r
   8 package org.opendaylight.nemo.user.vnspacemanager.structurestyle.deleteintent;\r
   9 \r
  10 import org.opendaylight.controller.md.sal.binding.api.DataBroker;\r
  11 import org.opendaylight.nemo.user.tenantmanager.TenantManage;\r
  12 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.nemo.common.rev151010.FlowId;\r
  13 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.nemo.common.rev151010.UserId;\r
  14 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.nemo.intent.rev151010.Users;\r
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.nemo.intent.rev151010.user.intent.Objects;\r
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.nemo.intent.rev151010.user.intent.objects.Flow;\r
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.nemo.intent.rev151010.user.intent.objects.FlowKey;\r
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.nemo.intent.rev151010.users.User;\r
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.nemo.intent.rev151010.users.UserKey;\r
  20 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;\r
  21 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;\r
  22 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;\r
  23 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;\r
  24 import com.google.common.util.concurrent.CheckedFuture;\r
  25 import com.google.common.util.concurrent.FutureCallback;\r
  26 import com.google.common.util.concurrent.Futures;\r
  27 import org.slf4j.Logger;\r
  28 import org.slf4j.LoggerFactory;\r
  29 \r
  30 import java.util.List;\r
  31 \r
  32 /**\r
  33  * Created by z00293636 on 2015/9/2.\r
  34  */\r
  35 public class DeleteFlow {\r
  36 \r
  37     private DataBroker dataBroker;\r
  38     private TenantManage tenantManage;\r
  39     private static final Logger LOG = LoggerFactory.getLogger(DeleteFlow.class);\r
  40 \r
  41     public DeleteFlow(DataBroker dataBroker, TenantManage tenantManage){\r
  42         this.dataBroker = dataBroker;\r
  43         this.tenantManage = tenantManage;\r
  44     }\r
  45 \r
  46     public String DeleteFlowHandling(UserId userId, FlowId flowId){\r
  47         Boolean FlowInsExist = false;\r
  48         tenantManage.fetchVNSpace(userId);\r
  49         String errorInfo = null;\r
  50         User user = tenantManage.getUser();\r
  51 \r
  52         if (user != null){\r
  53             if (user.getObjects() != null){\r
  54                 if (user.getObjects().getFlow() != null){\r
  55                     List<Flow> flowList = tenantManage.getUser().getObjects().getFlow();\r
  56                     for (Flow flow : flowList){\r
  57                         if (flow.getFlowId().equals(flowId)){\r
  58                             FlowInsExist = true;\r
  59                             break;\r
  60                         }\r
  61                     }\r
  62                     if (FlowInsExist) {\r
  63                         DeleteFlowInstance(userId,flowId);\r
  64                     }\r
  65                     else{\r
  66                         errorInfo = "The flow instance " +flowId.getValue()+" is not exist. Could not be deleted.";\r
  67                     }\r
  68                 }\r
  69                 else{\r
  70                     errorInfo = "There are no flow instances in the data store.";\r
  71                 }\r
  72             }\r
  73         }\r
  74         else{\r
  75             errorInfo = "There are no user in the data store.";\r
  76         }\r
  77         return errorInfo;\r
  78     }\r
  79 \r
  80     private void DeleteFlowInstance(UserId userId, FlowId flowId){\r
  81         WriteTransaction t = dataBroker.newWriteOnlyTransaction();\r
  82         UserKey userKey = new UserKey(userId);\r
  83         FlowKey flowKey = new FlowKey(flowId);\r
  84 \r
  85         InstanceIdentifier<Flow> flowid = InstanceIdentifier.builder(Users.class).child(User.class, userKey).child(Objects.class).child(Flow.class,flowKey).build();\r
  86         t.delete(LogicalDatastoreType.CONFIGURATION, flowid);\r
  87         CheckedFuture<Void, TransactionCommitFailedException> f = t.submit();\r
  88         Futures.addCallback(f, new FutureCallback<Void>() {\r
  89             @Override\r
  90             public void onFailure(Throwable t) {\r
  91                 LOG.error("Could not write endpoint base container", t);\r
  92             }\r
  93 \r
  94             @Override\r
  95             public void onSuccess(Void result) {\r
  96             }\r
  97         });\r
  98     }\r
  99 }\r