262 lines
9.2 KiB
VB.net
262 lines
9.2 KiB
VB.net
#Region "Microsoft.VisualBasic::ab3c4c8a2c451e14dce950d548490d07, Microsoft.VisualBasic.Core\ApplicationServices\Parallel\MMFProtocol\MMFChannel.vb"
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' Author:
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'
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' asuka (amethyst.asuka@gcmodeller.org)
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' xie (genetics@smrucc.org)
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' xieguigang (xie.guigang@live.com)
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'
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' Copyright (c) 2018 GPL3 Licensed
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'
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'
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' GNU GENERAL PUBLIC LICENSE (GPL3)
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'
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'
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' This program is free software: you can redistribute it and/or modify
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' it under the terms of the GNU General Public License as published by
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' the Free Software Foundation, either version 3 of the License, or
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' (at your option) any later version.
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'
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' This program is distributed in the hope that it will be useful,
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' but WITHOUT ANY WARRANTY; without even the implied warranty of
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' MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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' GNU General Public License for more details.
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'
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' You should have received a copy of the GNU General Public License
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' along with this program. If not, see <http://www.gnu.org/licenses/>.
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' /********************************************************************************/
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' Summaries:
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' Delegate Sub
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'
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'
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' Delegate Sub
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'
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'
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' Class MMFSocket
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'
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' Properties: NewMessageCallBack, URI
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'
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' Constructor: (+2 Overloads) Sub New
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'
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' Function: CreateObject, getMessage, Ping, ReadData, ReadString
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' SendMessage, ToString, WriteMessage
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'
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' Sub: __dataArrival, (+2 Overloads) Dispose, (+3 Overloads) SendMessage
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'
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'
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'
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'
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'
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' /********************************************************************************/
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#End Region
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Imports Microsoft.VisualBasic.CommandLine.Reflection
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Imports Microsoft.VisualBasic.Net.Protocols
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Imports Microsoft.VisualBasic.Parallel.MMFProtocol.MapStream
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Imports Microsoft.VisualBasic.Text
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Namespace Parallel.MMFProtocol
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''' <summary>
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''' 客户端接受到的数据需要经过反序列化解码方能读取
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''' </summary>
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''' <param name="data"></param>
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''' <remarks></remarks>
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Public Delegate Sub DataArrival(data As Byte())
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''' <summary>
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'''
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''' </summary>
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''' <param name="message">UTF8 string</param>
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Public Delegate Sub ReadNewMessage(message As String)
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''' <summary>
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''' MMFProtocol socket object for the inter-process communication on the localhost, this can be using for the data exchange between two process.
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''' </summary>
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''' <remarks></remarks>
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<[Namespace]("MMFSocket", Description:="MMFProtocol socket object for the inter-process communication on the localhost, this can be using for the data exchange between two process.")>
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Public Class MMFSocket : Implements IDisposable
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Dim _MMFReader As MSIOReader, _MMFWriter As MSWriter
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Dim _UpdateFlag As Long
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Dim _callBacks As DataArrival
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Public Property NewMessageCallBack As ReadNewMessage
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Public ReadOnly Property URI As String
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''' <summary>
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'''
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''' </summary>
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''' <param name="uri"></param>
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''' <param name="chunkSize">默认的区块大小为100KB，这个对于一般的小文本传输已经足够了</param>
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Sub New(uri As String, Optional chunkSize As Long = 100 * 1024)
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_MMFWriter = New MSWriter(uri, chunkSize)
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_MMFReader = New MSIOReader(uri, AddressOf __dataArrival, chunkSize)
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_URI = uri
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End Sub
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Public Const MMF_PROTOCOL As String = "mmf://"
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''' <summary>
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'''
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''' </summary>
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''' <param name="uri"></param>
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''' <param name="dataArrivals">
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''' Public Delegate Sub <see cref="__dataArrival"/>(byteData As <see cref="System.Byte"/>())
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''' 会优先于事件<see cref="__dataArrival"></see>的发生</param>
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''' <remarks></remarks>
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Sub New(uri As String, dataArrivals As DataArrival)
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Call Me.New(uri)
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_callBacks = dataArrivals
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End Sub
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Public Sub SendMessage(byteData As Byte())
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Me._UpdateFlag = _MMFReader.Read.udtBadge + 1
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Dim bytData As Byte() = New MMFStream With {
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.byteData = byteData,
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.udtBadge = Me._UpdateFlag
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}.Serialize
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Call _MMFReader.Update(Me._UpdateFlag)
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Call _MMFWriter.WriteStream(bytData)
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End Sub
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''' <summary>
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''' 直接从映射文件之中读取数据
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''' </summary>
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''' <returns></returns>
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Public Function ReadData() As Byte()
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Return _MMFReader.Read.byteData
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End Function
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Public Sub SendMessage(raw As RawStream)
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Call SendMessage(raw.Serialize)
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End Sub
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''' <summary>
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'''
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''' </summary>
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''' <param name="s"><see cref="System.Text.Encoding.UTF8"/></param>
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Public Sub SendMessage(s As String)
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Dim buf As Byte() = System.Text.Encoding.UTF8.GetBytes(s)
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Call Me.SendMessage(buf)
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End Sub
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Public Function ReadString() As String
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Dim buf As Byte() = ReadData()
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Dim s As String = System.Text.Encoding.UTF8.GetString(buf)
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Return s
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End Function
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#Region "IDisposable Support"
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Private disposedValue As Boolean ' To detect redundant calls
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' IDisposable
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Protected Overridable Sub Dispose(disposing As Boolean)
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If Not Me.disposedValue Then
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If disposing Then
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' TODO: dispose managed state (managed objects).
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Call Me._MMFWriter.Free
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Call Me._MMFReader.Free
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End If
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' TODO: free unmanaged resources (unmanaged objects) and override Finalize() below.
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' TODO: set large fields to null.
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End If
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Me.disposedValue = True
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End Sub
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' TODO: override Finalize() only if Dispose( disposing As Boolean) above has code to free unmanaged resources.
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'Protected Overrides Sub Finalize()
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' ' Do not change this code. Put cleanup code in Dispose( disposing As Boolean) above.
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' Dispose(False)
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' MyBase.Finalize()
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'End Sub
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' This code added by Visual Basic to correctly implement the disposable pattern.
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Public Sub Dispose() Implements IDisposable.Dispose
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' Do not change this code. Put cleanup code in Dispose(disposing As Boolean) above.
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Dispose(True)
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GC.SuppressFinalize(Me)
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End Sub
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#End Region
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Public Overrides Function ToString() As String
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Return $"{MMF_PROTOCOL}{_URI}"
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End Function
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Public Function Ping() As Boolean
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Call SendMessage(s:=_PING_MESSAGE)
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Call Threading.Thread.Sleep(100)
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If PingResult = True Then
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PingResult = False
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Return True
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Else
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Return False
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End If
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End Function
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Private Const _PING_MESSAGE As String = "PINT_REQUEST::{BAB0B3FA-C3F3-42F2-A577-9AF57EBDB9C7}"
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Private Const _PING_RETURNS As String = "PING_RETURNS::{BAB0B3FA-C3F3-42F2-A577-9AF57EBDB9C7}"
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Dim PingResult As Boolean = False
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Private Sub __dataArrival(data() As Byte)
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Dim s_MSG As String = System.Text.Encoding.Unicode.GetString(data)
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If String.Equals(s_MSG, _PING_MESSAGE) Then
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Call SendMessage(_PING_RETURNS)
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ElseIf String.Equals(s_MSG, _PING_RETURNS) Then
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PingResult = True
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Else
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If Not _callBacks Is Nothing Then
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Call _callBacks(data)
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End If
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If Not NewMessageCallBack Is Nothing Then
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Call NewMessageCallBack()(s_MSG)
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End If
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End If
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End Sub
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#Region "ShellScript API"
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<ExportAPI("MMFProtocol.New")>
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Public Shared Function CreateObject(hostName As String, Optional handler As Action(Of Generic.IEnumerable(Of Byte)) = Nothing) As MMFProtocol.MMFSocket
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Dim CallBackHandle As DataArrival = New DataArrival(Sub(data As Byte()) handler(data))
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Return New MMFSocket(hostName, CallBackHandle)
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End Function
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<ExportAPI("SendMessage")>
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Public Shared Function SendMessage(socket As MMFSocket, data As Generic.IEnumerable(Of Byte)) As Boolean
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Try
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Call socket.SendMessage(data.ToArray)
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Return True
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Catch ex As Exception
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Return False
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End Try
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End Function
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<ExportAPI("getMessage")>
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Public Shared Function getMessage(data As Generic.IEnumerable(Of Byte), Optional encoding As String = "") As String
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Return TextFileEncodingDetector.ToString(data, encoding)
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End Function
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<ExportAPI("Print.Message")>
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Public Shared Function WriteMessage(data As Generic.IEnumerable(Of Byte)) As String
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Dim Message As String = getMessage(data)
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Call Console.WriteLine(Message)
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Return Message
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End Function
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#End Region
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End Class
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End Namespace
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