Coverage Report - com.allanbank.mongodb.client.connection.Connection
 
Classes in this File Line Coverage Branch Coverage Complexity
Connection
N/A
N/A
1
 
 1  
 /*
 2  
  * #%L
 3  
  * Connection.java - mongodb-async-driver - Allanbank Consulting, Inc.
 4  
  * %%
 5  
  * Copyright (C) 2011 - 2014 Allanbank Consulting, Inc.
 6  
  * %%
 7  
  * Licensed under the Apache License, Version 2.0 (the "License");
 8  
  * you may not use this file except in compliance with the License.
 9  
  * You may obtain a copy of the License at
 10  
  * 
 11  
  *      http://www.apache.org/licenses/LICENSE-2.0
 12  
  * 
 13  
  * Unless required by applicable law or agreed to in writing, software
 14  
  * distributed under the License is distributed on an "AS IS" BASIS,
 15  
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 16  
  * See the License for the specific language governing permissions and
 17  
  * limitations under the License.
 18  
  * #L%
 19  
  */
 20  
 package com.allanbank.mongodb.client.connection;
 21  
 
 22  
 import java.beans.PropertyChangeListener;
 23  
 import java.io.Closeable;
 24  
 import java.io.Flushable;
 25  
 import java.util.concurrent.TimeUnit;
 26  
 
 27  
 import com.allanbank.mongodb.MongoDbException;
 28  
 import com.allanbank.mongodb.client.Message;
 29  
 import com.allanbank.mongodb.client.callback.ReplyCallback;
 30  
 
 31  
 /**
 32  
  * Provides the lowest level interface for interacting with a MongoDB server.
 33  
  * The method provided here are a straight forward mapping from the <a href=
 34  
  * "http://www.mongodb.org/display/DOCS/Mongo+Wire+Protocol">MongoDB Wire
 35  
  * Protocol</a>.
 36  
  * 
 37  
  * @api.no This class is <b>NOT</b> part of the drivers API. This class may be
 38  
  *         mutated in incompatible ways between any two releases of the driver.
 39  
  * @copyright 2011-2014, Allanbank Consulting, Inc., All Rights Reserved
 40  
  */
 41  
 public interface Connection extends Closeable, Flushable {
 42  
 
 43  
     /** The collection to use when issuing commands to the database. */
 44  
     public static final String COMMAND_COLLECTION = "$cmd";
 45  
 
 46  
     /** The property for if the connection is open or not. */
 47  
     public static final String OPEN_PROP_NAME = "open";
 48  
 
 49  
     /**
 50  
      * Adds a {@link PropertyChangeListener} to this connection. Events are
 51  
      * fired as the state of the connection changes.
 52  
      * 
 53  
      * @param listener
 54  
      *            The listener for the change events.
 55  
      */
 56  
     public void addPropertyChangeListener(PropertyChangeListener listener);
 57  
 
 58  
     /**
 59  
      * Returns the number of messages that are pending responses from the
 60  
      * server.
 61  
      * 
 62  
      * @return The number of messages pending responses from the server.
 63  
      */
 64  
     public int getPendingCount();
 65  
 
 66  
     /**
 67  
      * Returns the name of a server the connection is currently connected to.
 68  
      * 
 69  
      * @return The name of a server the connection is currently connected to.
 70  
      */
 71  
     public String getServerName();
 72  
 
 73  
     /**
 74  
      * Returns true if the connection is open and not shutting down, false
 75  
      * otherwise.
 76  
      * 
 77  
      * @return True if the connection is open and not shutting down, false
 78  
      *         otherwise.
 79  
      */
 80  
     public boolean isAvailable();
 81  
 
 82  
     /**
 83  
      * Determines if the connection is idle.
 84  
      * 
 85  
      * @return True if the connection is waiting for messages to send and has no
 86  
      *         outstanding messages to receive.
 87  
      */
 88  
     public boolean isIdle();
 89  
 
 90  
     /**
 91  
      * Determines if the connection is open.
 92  
      * 
 93  
      * @return True if the connection is open and thinks it can send messages.
 94  
      */
 95  
     public boolean isOpen();
 96  
 
 97  
     /**
 98  
      * Returns true if the connection is being gracefully closed, false
 99  
      * otherwise.
 100  
      * 
 101  
      * @return True if the connection is being gracefully closed, false
 102  
      *         otherwise.
 103  
      */
 104  
     public boolean isShuttingDown();
 105  
 
 106  
     /**
 107  
      * Notifies the call backs for the pending and optionally the to be sent
 108  
      * messages that there has been an external, unrecoverable error.
 109  
      * 
 110  
      * @param exception
 111  
      *            The error condition.
 112  
      */
 113  
     public void raiseErrors(MongoDbException exception);
 114  
 
 115  
     /**
 116  
      * Removes a {@link PropertyChangeListener} from this connection.
 117  
      * 
 118  
      * @param listener
 119  
      *            The listener for the change events.
 120  
      */
 121  
     public void removePropertyChangeListener(PropertyChangeListener listener);
 122  
 
 123  
     /**
 124  
      * Sends a message on the connection.
 125  
      * 
 126  
      * @param message1
 127  
      *            The first message to send on the connection.
 128  
      * @param message2
 129  
      *            The second message to send on the connection.
 130  
      * @param replyCallback
 131  
      *            The callback to notify of responses to the {@code message2}.
 132  
      *            May be <code>null</code>.
 133  
      * @throws MongoDbException
 134  
      *             On an error sending the message.
 135  
      */
 136  
     public void send(Message message1, Message message2,
 137  
             ReplyCallback replyCallback) throws MongoDbException;
 138  
 
 139  
     /**
 140  
      * Sends a message on the connection.
 141  
      * 
 142  
      * @param message
 143  
      *            The message to send on the connection.
 144  
      * @param replyCallback
 145  
      *            The callback to notify of responses to the messages. May be
 146  
      *            <code>null</code>.
 147  
      * @throws MongoDbException
 148  
      *             On an error sending the message.
 149  
      */
 150  
     public void send(Message message, ReplyCallback replyCallback)
 151  
             throws MongoDbException;
 152  
 
 153  
     /**
 154  
      * Notifies the connection that once all outstanding requests have been sent
 155  
      * and all replies received the Connection should be closed. This method
 156  
      * will return prior to the connection being closed.
 157  
      * 
 158  
      * @param force
 159  
      *            If true then the connection can be immediately closed as the
 160  
      *            caller knows there are no outstanding requests to the server.
 161  
      */
 162  
     public void shutdown(boolean force);
 163  
 
 164  
     /**
 165  
      * Waits for the connection to become idle.
 166  
      * 
 167  
      * @param timeout
 168  
      *            The amount of time to wait for the connection to become idle.
 169  
      * @param timeoutUnits
 170  
      *            The units for the amount of time to wait for the connection to
 171  
      *            become idle.
 172  
      */
 173  
     public void waitForClosed(int timeout, TimeUnit timeoutUnits);
 174  
 }