/// <summary>
/// Writes a message file.
/// </summary>
/// <param name="path">The file path.</param>
/// <param name="msg">The message.</param>
/// <param name="msgInfo">The message metadata.</param>
internal void WriteMessage(string path, QueuedMsg msg, QueuedMsgInfo msgInfo)
{
byte[] md5Hash;
using (var fsMsg = new EnhancedFileStream(path, FileMode.Create, FileAccess.ReadWrite))
{
// Write the file header
fsMsg.WriteInt32(MsgMagic); // Magic Number
fsMsg.WriteInt32(0); // Format Version
fsMsg.WriteInt32(0); // Reserved
fsMsg.WriteBytesNoLen(md5Zeros); // MD5 hash placeholder
// Write the message body.
fsMsg.WriteBytes32(msg.BodyRaw);
// Write the metadata.
fsMsg.WriteString16(msgInfo.ToString());
// Compute and save the MD5 hash
fsMsg.Position = MsgHeaderSize;
md5Hash = MD5Hasher.Compute(fsMsg, fsMsg.Length - fsMsg.Position);
fsMsg.Position = MsgMD5Offset;
fsMsg.WriteBytesNoLen(md5Hash);
}
}
/// <summary>
/// Adds a message to the backing store and updates the <see cref="QueuedMsgInfo.PersistID" />
/// and <see cref="QueuedMsgInfo.ProviderData" /> fields in the <see cref="QueuedMsgInfo" />
/// instance passed.
/// </summary>
/// <param name="msgInfo">The message metadata.</param>
/// <param name="msg">The message.</param>
public void Add(QueuedMsgInfo msgInfo, QueuedMsg msg)
{
using (TimedLock.Lock(this))
{
if (messages == null)
{
throw new ObjectDisposedException(this.GetType().Name);
}
msgInfo.PersistID = msg.ID;
msgInfo.ProviderData = msg;
messages[msg.ID] = msgInfo;
}
}
/// <summary>
/// Initializes the record with information from a <see cref="QueuedMsg" />
/// and sets default values for all remaining fields.
/// </summary>
/// <param name="persistID">
/// The <see cref="IMsgQueueStore" /> specific ID used to identify and
/// locate the message.
/// </param>
/// <param name="msg">The message</param>
public QueuedMsgInfo(object persistID, QueuedMsg msg)
{
this.PersistID = persistID;
this.ID = msg.ID;
this.SessionID = msg.SessionID;
this.TargetEP = msg.TargetEP;
this.ResponseEP = msg.ResponseEP;
this.Priority = msg.Priority;
this.Flags = msg.Flags;
this.SendTime = msg.SendTime;
this.ExpireTime = msg.ExpireTime;
this.DeliveryTime = DateTime.MinValue;
this.BodySize = msg.BodyRaw.Length;
this.DeliveryAttempts = 0;
this.LockID = Guid.Empty;
this.ProviderData = null;
}
/// <summary>
/// Adds a message to the backing store and updates the <see cref="QueuedMsgInfo.PersistID" />
/// and <see cref="QueuedMsgInfo.ProviderData" /> fields in the <see cref="QueuedMsgInfo" />
/// instance passed.
/// </summary>
/// <param name="msgInfo">The message metadata.</param>
/// <param name="msg">The message.</param>
public void Add(QueuedMsgInfo msgInfo, QueuedMsg msg)
{
using (TimedLock.Lock(this))
{
if (messages == null)
{
throw new ObjectDisposedException(this.GetType().Name);
}
string msgPath;
msgPath = GetMessagePath(msgInfo.ID, true);
WriteMessage(msgPath, msg, msgInfo);
msgInfo.PersistID = msg.ID;
msgInfo.ProviderData = msgPath;
messages[msg.ID] = msgInfo;
}
}