| /* |
| * 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. |
| */ |
| |
| |
| package org.apache.geode.internal.admin.remote; |
| |
| import java.util.Set; |
| |
| import org.apache.geode.admin.OperationCancelledException; |
| import org.apache.geode.admin.RuntimeAdminException; |
| import org.apache.geode.distributed.internal.ClusterDistributionManager; |
| import org.apache.geode.distributed.internal.ReplyProcessor21; |
| import org.apache.geode.distributed.internal.membership.InternalDistributedMember; |
| |
| /** |
| * Used by {@link AdminRequest} to wait for a {@link AdminResponse}. Prior to GemFire 4.0, a |
| * singleton instance of this would keep track of <code>AdminRequest</code>s that were waiting for |
| * replies and would cancel them, if desired. However, in order to fix bug 31562, |
| * <code>AdminRequest</code> were modified to use an {@link AdminReplyProcessor} and this class was |
| * refactored to be more static. |
| * |
| * <P> |
| * |
| * Eventually, the waiting/cancelling code can be factored into <code>AdminRequest</code> and this |
| * class can go away. |
| */ |
| public class AdminWaiters { |
| /** |
| * Sends <code>msg</code> using <code>dm</code> and waits for the response. |
| * |
| * @return the response. |
| * @throws RuntimeAdminException if this method is interrupted, times out, cancelled |
| * ({@link #cancelWaiters}), or failed with an exception on the server side. |
| */ |
| public static AdminResponse sendAndWait(AdminRequest msg, ClusterDistributionManager dm) { |
| |
| // Prior to GemFire 4.0 admin messages were only sent to other |
| // VMs; it was impossible for an admin message to be destined for |
| // the VM that sent it. However, now that the admin API can be |
| // used in an application VM, the admin API may request |
| // information about its own VM. Unfortunately, a distribution |
| // manager cannot send a message to itself (see bug 31734). So, |
| // we have to handle admin messages sent to ourselves specially. |
| if (dm.getId().equals(msg.getRecipient())) { |
| msg.setSender(dm.getId()); // Sent from myself |
| return msg.createResponse(dm); |
| } |
| |
| AdminResponse result = null; |
| try { |
| synchronized (msg) { |
| Set failures = dm.putOutgoing(msg); |
| if (failures != null && failures.size() > 0) { // didn't go out |
| if (dm.getDistributionManagerIds().contains(msg.getRecipient())) { |
| // it's still in the view |
| String s = " (" + msg + ")"; |
| throw new RuntimeAdminException( |
| String.format("Could not send request.%s", s)); |
| } |
| throw new OperationCancelledException( |
| String.format("Request sent to %s failed since member departed.%s", |
| new Object[] {msg.getRecipient(), ""})); |
| } |
| // sent it |
| |
| long timeout = getWaitTimeout(); |
| boolean gotResponse = msg.waitForResponse(timeout); |
| if (!gotResponse) { |
| if (dm.isCurrentMember(msg.getRecipient())) { // still here? |
| // no one ever replied |
| StringBuffer sb = new StringBuffer("Administration request "); |
| sb.append(msg); |
| sb.append(" sent to "); |
| sb.append(msg.getRecipient()); |
| sb.append(" timed out after "); |
| sb.append((timeout / 1000)); |
| sb.append(" seconds."); |
| |
| throw new RuntimeAdminException(sb.toString()); |
| } // still here? |
| // recipient vanished |
| String s = " (" + msg + ")"; |
| throw new OperationCancelledException( |
| String.format("Request sent to %s failed since member departed.%s", |
| new Object[] {msg.getRecipient(), s})); |
| } // !gotResponse |
| |
| result = msg.getResponse(); |
| } // synchronized |
| } catch (InterruptedException ex) { |
| Thread.currentThread().interrupt(); |
| dm.getCancelCriterion().checkCancelInProgress(ex); |
| String s = "Request wait was interrupted."; |
| s += " (" + msg + ")"; |
| throw new RuntimeAdminException(s, ex); |
| } |
| |
| if (result == null) { |
| String s = " (" + msg + ")"; |
| throw new OperationCancelledException( |
| String.format("Request sent to %s was cancelled. %s", |
| msg.getRecipient(), s)); |
| |
| } else if (result instanceof AdminFailureResponse) { |
| throw new RuntimeAdminException( |
| "Request failed.", |
| ((AdminFailureResponse) result).getCause()); |
| } |
| return result; |
| } |
| |
| /** |
| * Call to send a {@link AdminResponse} and notify the thread waiting for it. |
| */ |
| public static void sendResponse(AdminResponse msg) { |
| int id = msg.getMsgId(); |
| ReplyProcessor21 processor = (ReplyProcessor21) ReplyProcessor21.getProcessor(id); |
| |
| if (processor == null) { |
| return; // must've been cancelled |
| } else { |
| processor.process(msg); |
| } |
| } |
| |
| /** |
| * Call with the id of a RemoteGfManager that no longer exists. All outstanding requests to that |
| * manager will be cancelled. |
| */ |
| public static void cancelWaiters(InternalDistributedMember id) { |
| // Now that AdminRequests use a ReplyProcessor, we don't need to |
| // do anything here. The ReplyProcessor takes care of members |
| // that depart. |
| } |
| |
| public static void cancelRequest(int msgId, ClusterDistributionManager dm) { |
| AdminReplyProcessor processor = (AdminReplyProcessor) ReplyProcessor21.getProcessor(msgId); |
| if (processor != null) { |
| InternalDistributedMember recipient = processor.getResponder(); |
| dm.putOutgoing(CancellationMessage.create(recipient, msgId)); |
| processor.cancel(); |
| } |
| } |
| |
| private static long getWaitTimeout() { |
| String prop = System.getProperty("remote.call.timeout", "1800"); |
| try { |
| int val = Integer.parseInt(prop); |
| return Math.abs(val * 1000L); |
| } catch (NumberFormatException nfe) { |
| return 1800 * 1000L; |
| } |
| } |
| |
| } |