protected void Page_Load(object sender, EventArgs e)
{
Response.ContentType = "text/plain";
Guid job = Guid.NewGuid();
BatchResizeSettings s = new BatchResizeSettings(MapPath("~/Results/" + job.ToString() + ".zip"), job, new List<BatchResizeItem>());
string[] sourceImages = System.IO.Directory.GetFiles(Path.GetFullPath(MapPath("~/").TrimEnd('\\') + "\\..\\Images"), "*");
foreach (string img in sourceImages) {
s.files.Add(new BatchResizeItem(img, null, "?width=100"));
}
s.ItemEvent += new ItemCallback(s_ItemEvent);
s.JobEvent += new JobCallback(s_JobEvent);
//Executes on a thread pool thread
BatchResizeManager.BeginBatchResize(s);
///Executes synchronously. Use BatchResizeManager.BeginBatchResize(s) for async execution.
//new BatchResizeWorker(s).Work();
}
/// <summary>
/// Not for external use. Assumes 'state' is a BatchResizeSettings instance, and stores it in a class member.
/// Next, it completes (or fails at) the job. Throws exceptions only if (a) state is not a BatchResizeSettings instance, or (b) an exception is thrown by and handler of the JobEvent (Failed) event.
/// </summary>
/// <param name="state"></param>
protected internal void Work(object state)
{
s = (BatchResizeSettings)state;
try
{
//Time the job.
jobTimer = new Stopwatch();
jobTimer.Start();
//1) Eliminate duplicate target filenames, sanitize, and add appropriate extensions, then mark all items as immutable
s.FixDuplicateFilenames();
s.AppendFinalExtensions();
s.MarkItemsImmutable();
//2) Build dictionary based on target filenames.
items = BuildDict(s.files);
//3) Verify destination folder exists, otherwise create it. (early detection of security failures)
CreateDestinationFolder();
//4) Open zip file (writes to a temporary location, then moves the file when it is done)
using (Ionic.Zip.ZipFile z = new Ionic.Zip.ZipFile(s.destinationFile))
{
//Compress for speed.
z.CompressionLevel = Ionic.Zlib.CompressionLevel.BestSpeed;
//Fire events instead of throwing exceptions
z.ZipErrorAction = ZipErrorAction.InvokeErrorEvent;
z.ZipError += new EventHandler <ZipErrorEventArgs>(z_ZipError);
z.SaveProgress += new EventHandler <SaveProgressEventArgs>(z_SaveProgress);
//5) Create a list to store item resize/compression results
results = new List <ItemResult>();
//6) Queue the files that will be included in the archive, specifying a callback for items
foreach (BatchResizeItem i in s.files)
{
try{
ZipEntry ze = z.AddEntry(i.TargetFilename, new WriteDelegate(WriteItemCallback));
//Don't try to compress files we have already resized, it won't help, just slow things down and possibly use more space.
if (wouldResize(i))
{
ze.CompressionMethod = CompressionMethod.None;
}
else
{
//Set the times
//ze.SetEntryTimes(System.IO.File.GetLastWriteTimeUtc(i.PhysicalPath),
// System.IO.File.GetLastAccessTimeUtc(i.PhysicalPath),
// System.IO.File.GetCreationTimeUtc(i.PhysicalPath));
//Never mind, not desired behavior.
}
}catch (Exception ex) {
ItemFailed(i, ex);
}
}
//7) Begin processing the queue.
//As each file is written to the archive, a callback is invoked which actually provides the resized stream.
z.Save();
} //8) Close zip file
jobTimer.Stop();
//9) Fire the event that says "We're done!"
JobCompleted(s);
}
catch (Exception ex)
{
//Admit we failed to whoever is listening.
JobFailed(s, ex);
}
}
//Can initiate resizes, specifying a callback for error and progress reporting
/// <summary>
/// Begins a batch resize operation on a background thread. If the ASP.NET process recycles, or the server reboots, the process will be aborted.
///
/// </summary>
/// <param name="s"></param>
public static void BeginBatchResize(BatchResizeSettings s)
{
ThreadPool.QueueUserWorkItem(new BatchResizeWorker(s).Work, s);
}
/// <summary>
/// Creates a new worker instance. Do not modify the settings while executing the Work() method.
/// </summary>
/// <param name="s"></param>
public BatchResizeWorker(BatchResizeSettings s)
{
this.s = s;
}
private void JobFailed(BatchResizeSettings s, Exception ex)
{
JobEventArgs args = new JobEventArgs(s.jobId, new JobResult(results, false, ex, GetJobStats()));
s.FireJobEvent(args);
}
private void JobCompleted(BatchResizeSettings s)
{
JobEventArgs args = new JobEventArgs(s.jobId, new JobResult(results, true, null, GetJobStats()));
s.FireJobEvent(args);
}
/// <summary>
/// Creates a new worker instance. Do not modify the settings while executing the Work() method.
/// </summary>
/// <param name="s"></param>
public BatchResizeWorker(BatchResizeSettings s)
{
this.s = s;
}
private void JobFailed(BatchResizeSettings s,Exception ex)
{
JobEventArgs args = new JobEventArgs(s.jobId, new JobResult(results,false, ex, GetJobStats()));
s.FireJobEvent(args);
}
//Can initiate resizes, specifying a callback for error and progress reporting
/// <summary>
/// Begins a batch resize operation on a background thread. If the ASP.NET process recycles, or the server reboots, the process will be aborted.
///
/// </summary>
/// <param name="s"></param>
public static void BeginBatchResize(BatchResizeSettings s)
{
ThreadPool.QueueUserWorkItem(new BatchResizeWorker(s).Work, s);
}
private void JobCompleted(BatchResizeSettings s)
{
JobEventArgs args = new JobEventArgs(s.jobId, new JobResult(results, true,null, GetJobStats()));
s.FireJobEvent(args);
}
/// <summary>
/// Not for external use. Assumes 'state' is a BatchResizeSettings instance, and stores in in a class member.
/// Next, it completes (or fails at) the job. Throws exceptions only if (a) state is not a BatchResizeSettings instance, or (b) an exception is thrown by and handler of the JobEvent (Failed) event.
/// </summary>
/// <param name="state"></param>
protected internal void Work(object state)
{
s = (BatchResizeSettings)state;
try
{
//Time the job.
jobTimer = new Stopwatch();
jobTimer.Start();
//1) Eliminate duplicate target filenames, sanitize, and add appropriate extensions, then mark all items as immutable
s.FixDuplicateFilenames();
s.AppendFinalExtensions();
s.MarkItemsImmutable();
//2) Build dictionary based on target filenames.
items = BuildDict(s.files);
//3) Verify destination folder exists, otherwise create it. (early detection of security failures)
CreateDestinationFolder();
//4) Open zip file (writes to a temporary location, then moves the file when it is done)
using (Ionic.Zip.ZipFile z = new Ionic.Zip.ZipFile(s.destinationFile))
{
//Compress for speed.
z.CompressionLevel = Ionic.Zlib.CompressionLevel.BestSpeed;
//Fire events instead of throwing exceptions
z.ZipErrorAction = ZipErrorAction.InvokeErrorEvent;
z.ZipError +=new EventHandler<ZipErrorEventArgs>(z_ZipError);
z.SaveProgress +=new EventHandler<SaveProgressEventArgs>(z_SaveProgress);
//5) Create a list to store item resize/compression results
results = new List<ItemResult>();
//6) Queue the files that will be included in the archive, specifying a callback for items
foreach (BatchResizeItem i in s.files){
try{
ZipEntry ze = z.AddEntry(i.TargetFilename, new WriteDelegate(WriteItemCallback));
//Don't try to compress files we have already resized, it won't help, just slow things down and possibly use more space.
if (wouldResize(i)) ze.CompressionMethod = CompressionMethod.None;
else
{
//Set the times
//ze.SetEntryTimes(System.IO.File.GetLastWriteTimeUtc(i.PhysicalPath),
// System.IO.File.GetLastAccessTimeUtc(i.PhysicalPath),
// System.IO.File.GetCreationTimeUtc(i.PhysicalPath));
//Nevermind, not desired behavior.
}
}catch (Exception ex){
ItemFailed(i,ex);
}
}
//7) Begin proccessing the queue.
//As each file is written to the archive, a callback is invoked which actually provides the resized stream.
z.Save();
} //8) Close zip file
jobTimer.Stop();
//9) Fire the event that says "We're done!"
JobCompleted(s);
}
catch (Exception ex)
{
//Admit we failed to whoever is listening.
JobFailed(s,ex);
}
}
void bwResizeBatch_DoWork(object sender, DoWorkEventArgs e)
{
if (DoWorkEvent != null)
DoWorkEvent(this, new DoWorkEventArgs(e.Argument));
count = 0;
try
{
Dictionary<string, object> UserInputs = e.Argument as Dictionary<string, object>;
if (UserInputs != null)
{
ResizeSettings rs = new ResizeSettings((string)UserInputs["querystring"]);
batchItems = (List<BatchInfo>)UserInputs["batchItems"];
total = batchItems.Count;
Guid job = Guid.NewGuid();
var s = new BatchResizeSettings(Properties.Settings.Default.saveZipPath, job, new List<BatchResizeItem>());
foreach (var item in batchItems)
s.files.Add(new BatchResizeItem(item.FullPath, null, rs.ToStringEncoded()));
s.ItemEvent += s_ItemEvent;
s.JobEvent += s_JobEvent;
new BatchResizeWorker(s).Work();
}
}
catch (Exception ex)
{
// handle the exception.
}
}
