␡
- Architecture of the Application
- Creating the OS X Java Application
- Creating the OS X File Watcher with JNIWrapper
- Building the ASP.NET Message-Receiver Application
- Creating the Macintosh Application in Eclipse
- Risks on the Horizon
- Conclusion
- For More Information
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Building the ASP.NET Message-Receiver Application
When a file system state change occurs on the OS X machine, a message is sent to a web site on the interested Windows machine, as mentioned earlier. I created an ASP.NET page to receive messages about the OS X machine in the form of HTTP requests. When the ASP.NET message-receiving page gets a request from the OS X File Watcher, it parses out from the query string the message sent from the Mac file system, and processes that message. In this case, the message is sent to a database and the data passed to it from the OS X machine is returned as an indication that the data has been processed. The following code is the ASP.NET server-side script (written in Visual Basic .NET) that's used by the Windows web site:
<%@ Page Language="vb" AutoEventWireup="false"%>
<script runat=server>
Private Sub Page_Load(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles MyBase.Load
'Put user code to initialize the page here
Dim filName As String = ""
Dim filMessage As String = ""
Dim filDateStr As String = ""
If Not Page.Request.Item("FileName") Is Nothing Then
filName = CType(Page.Request.Item("FileName"), String)
Else
filName = ""
End If
If Not Page.Request.Item("FileMessage") Is Nothing Then
filMessage = CType(Page.Request.Item("FileMessage"), String)
Else
filMessage = ""
End If
If Not Page.Request.Item("FileDateStr") Is Nothing Then
filDateStr = CType(Page.Request.Item("FileDateStr"), String)
Else
filDateStr = "")
End If
'Do some data access stuff here with the passed parameters
if filDateStr.length > 0 then
Response.Write("->" & filMessage & ":" & filName & ":" & filDateStr)
else
Response.Write("--" & filMessage & ":" & filName & ":" & Now().ToLongTimeString())
end if
End Sub
</script>