| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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. |
| */ |
| |
| using System; |
| using System.Threading.Tasks; |
| using Amqp; |
| using Amqp.Framing; |
| using Amqp.Types; |
| using Apache.NMS.AMQP.Meta; |
| using Apache.NMS.AMQP.Util; |
| |
| namespace Apache.NMS.AMQP.Provider.Amqp |
| { |
| public class AmqpConnectionSession : AmqpSession |
| { |
| private readonly bool hasClientId; |
| |
| public AmqpConnectionSession(AmqpConnection connection, NmsSessionInfo sessionInfo) : base(connection, sessionInfo) |
| { |
| this.hasClientId = connection.Info.IsExplicitClientId; |
| } |
| |
| public async Task Unsubscribe(string subscriptionName) |
| { |
| TaskCompletionSource<bool> tcs = new TaskCompletionSource<bool>(TaskCreationOptions.RunContinuationsAsynchronously); |
| |
| ReceiverLink receiverLink = new ReceiverLink(UnderlyingSession, subscriptionName, CreateAttach(subscriptionName), (link, attach) => |
| { |
| Tracer.InfoFormat("Attempting to close subscription {0}. Attach response {1}", subscriptionName, attach); |
| if (attach.Source is Source source) |
| { |
| Tracer.InfoFormat("Found subscription {0} on remote with source {1}.", subscriptionName, source); |
| tcs.TrySetResult(true); |
| } |
| }); |
| receiverLink.AddClosedCallback((sender, error) => |
| { |
| string failureMessage = string.Equals(sender.Error?.Condition, ErrorCode.NotFound) |
| ? $"Cannot remove Subscription {subscriptionName} that does not exists" |
| : $"Subscription {subscriptionName} unsubscribe operation failure"; |
| |
| NMSException exception = ExceptionSupport.GetException(sender, failureMessage); |
| tcs.TrySetException(exception); |
| }); |
| |
| await tcs.Task; |
| |
| receiverLink.Close(TimeSpan.FromMilliseconds(Connection.Provider.CloseTimeout)); |
| } |
| |
| private Attach CreateAttach(string subscriptionName) |
| { |
| Attach attach = new Attach |
| { |
| LinkName = subscriptionName, |
| Target = new Target(), |
| SndSettleMode = SenderSettleMode.Unsettled, |
| RcvSettleMode = ReceiverSettleMode.First, |
| }; |
| |
| if (!this.hasClientId) |
| { |
| // We are trying to unsubscribe a 'global' shared subs using a 'null source lookup', add link |
| // desired capabilities as hints to the peer to consider this when trying to attach the link. |
| attach.DesiredCapabilities = new Symbol[] { SymbolUtil.SHARED, SymbolUtil.GLOBAL }; |
| } |
| |
| return attach; |
| } |
| } |
| } |