I have been a little busy lately doing a lot of learning from a financial background into retail and as part of the been a developer I have a task to compress very large files for sftp. So, after a couple of hours a wrote the below code. Hopefully it will safe someone's the pain of trying to this for sql 2008.
/*
Microsoft SQL Server Integration Services Script Task
Write scripts using Microsoft Visual C# 2008.
The ScriptMain is the entry point class of the script.
*/
using System;
using System.Data;
using Microsoft.SqlServer.Dts.Runtime;
using System.Windows.Forms;
using System.IO.Compression;
using System.IO;
namespace ST_e131a658cb92485b8392d785449083bc.csproj
{
[System.AddIn.AddIn("ScriptMain", Version = "1.0", Publisher = "", Description = "")]
public partial class ScriptMain : Microsoft.SqlServer.Dts.Tasks.ScriptTask.VSTARTScriptObjectModelBase
{
#region VSTA generated code
enum ScriptResults
{
Success = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Success,
Failure = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Failure
};
#endregion
/*
The execution engine calls this method when the task executes.
To access the object model, use the Dts property. Connections, variables, events,
and logging features are available as members of the Dts property as shown in the following examples.
To reference a variable, call Dts.Variables["MyCaseSensitiveVariableName"].Value;
To post a log entry, call Dts.Log("This is my log text", 999, null);
To fire an event, call Dts.Events.FireInformation(99, "test", "hit the help message", "", 0, true);
To use the connections collection use something like the following:
ConnectionManager cm = Dts.Connections.Add("OLEDB");
cm.ConnectionString = "Data Source=localhost;Initial Catalog=AdventureWorks;Provider=SQLNCLI10;Integrated Security=SSPI;Auto Translate=False;";
Before returning from this method, set the value of Dts.TaskResult to indicate success or failure.
To open Help, press F1.
*/
public void Main()
{
// TODO: Add your code here
String FullFilePath = Dts.Variables["User::strFullFilePath"].Value.ToString();
Compress(FullFilePath);
Dts.TaskResult = (int)ScriptResults.Success;
}
public static void Compress(string FileSelected)
{
int BufferSize = 2048;
Int64 bytesRead = 0;
byte[] buffer = new byte[BufferSize];
FileInfo fileToCompress = new FileInfo(FileSelected);
Int64 bytesInFile = fileToCompress.Length;
if (fileToCompress.Exists)
{
using (FileStream originalFileStream = fileToCompress.OpenRead())
{
if ((File.GetAttributes(fileToCompress.FullName) &
FileAttributes.Hidden) != FileAttributes.Hidden & fileToCompress.Extension != ".gz")
{
using (FileStream compressedFileStream = File.Create(fileToCompress.FullName + ".gz"))
{
using (GZipStream compressionStream = new GZipStream(compressedFileStream,
CompressionMode.Compress, true))
{
do
{
int FileBytes = originalFileStream.Read(buffer, 0, buffer.Length);
if (FileBytes == 0)
{
break;
}
compressionStream.Write(buffer, 0, buffer.Length);
bytesRead += FileBytes;
} while (bytesRead < bytesInFile);
}
}
//FileInfo info = new FileInfo(directoryPath + "\\" + fileToCompress.Name + ".gz");
//Console.WriteLine("Compressed {0} from {1} to {2} bytes.",
//fileToCompress.Name, fileToCompress.Length.ToString(), info.Length.ToString());
}
}
}
}
}
}
