-// -----------------------------------------------------------------------
-// <copyright file="NetworkAgent.cs" company="GRNET">
-// Copyright 2011-2012 GRNET S.A. All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or
-// without modification, are permitted provided that the following
-// conditions are met:
-//
-// 1. Redistributions of source code must retain the above
-// copyright notice, this list of conditions and the following
-// disclaimer.
-//
-// 2. Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following
-// disclaimer in the documentation and/or other materials
-// provided with the distribution.
-//
-// THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
-// OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
-// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
-// USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
-// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
-// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-// POSSIBILITY OF SUCH DAMAGE.
-//
-// The views and conclusions contained in the software and
-// documentation are those of the authors and should not be
-// interpreted as representing official policies, either expressed
-// or implied, of GRNET S.A.
-// </copyright>
-// -----------------------------------------------------------------------
+#region
+/* -----------------------------------------------------------------------
+ * <copyright file="NetworkAgent.cs" company="GRNet">
+ *
+ * Copyright 2011-2012 GRNET S.A. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ *
+ * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and
+ * documentation are those of the authors and should not be
+ * interpreted as representing official policies, either expressed
+ * or implied, of GRNET S.A.
+ * </copyright>
+ * -----------------------------------------------------------------------
+ */
+#endregion
+
+//TODO: Now there is a UUID tag. This can be used for renames/moves
+
using System;
using System.Collections.Concurrent;
{
private Agent<CloudAction> _agent;
- //A separate agent is used to execute delete actions immediatelly;
- private ActionBlock<CloudDeleteAction> _deleteAgent;
- readonly ConcurrentDictionary<string,DateTime> _deletedFiles=new ConcurrentDictionary<string, DateTime>();
-
-
- private readonly ManualResetEventSlim _pauseAgent = new ManualResetEventSlim(true);
+ [System.ComponentModel.Composition.Import]
+ private DeleteAgent _deleteAgent=new DeleteAgent();
[System.ComponentModel.Composition.Import]
public IStatusKeeper StatusKeeper { get; set; }
[System.ComponentModel.Composition.Import]
public IPithosSettings Settings { get; set; }
- private bool _firstPoll = true;
- private TaskCompletionSource<bool> _tcs;
- private ConcurrentDictionary<string,DateTime> _lastSeen=new ConcurrentDictionary<string, DateTime>();
+ //The Pause event stops the poll agent to give priority to the network agent
+ //Initially the event is signalled because we don't need to pause
+ private readonly AsyncManualResetEvent _pauseEvent = new AsyncManualResetEvent(true);
+
+ public AsyncManualResetEvent PauseEvent
+ {
+ get { return _pauseEvent; }
+ }
+
public void Start()
{
- _firstPoll = true;
_agent = Agent<CloudAction>.Start(inbox =>
{
Action loop = null;
loop = () =>
{
- _pauseAgent.Wait();
+ _deleteAgent.PauseEvent.Wait();
var message = inbox.Receive();
var process=message.Then(Process,inbox.CancellationToken);
inbox.LoopAsync(process, loop);
loop();
});
- _deleteAgent = new ActionBlock<CloudDeleteAction>(message =>ProcessDelete(message),new ExecutionDataflowBlockOptions{MaxDegreeOfParallelism=4});
- /*
- Action loop = null;
- loop = () =>
- {
- var message = inbox.Receive();
- var process = message.Then(ProcessDelete,inbox.CancellationToken);
- inbox.LoopAsync(process, loop);
- };
- loop();
-*/
-
}
private async Task Process(CloudAction action)
throw new ArgumentException("The action.AccountInfo is empty","action");
Contract.EndContractBlock();
- UpdateStatus(PithosStatus.Syncing);
- var accountInfo = action.AccountInfo;
+
+
using (log4net.ThreadContext.Stacks["NETWORK"].Push("PROCESS"))
{
var downloadPath = action.GetDownloadPath();
try
- {
+ {
+ _pauseEvent.Reset();
+ UpdateStatus(PithosStatus.Syncing);
+ var accountInfo = action.AccountInfo;
+
if (action.Action == CloudActionType.DeleteCloud)
{
//Redirect deletes to the delete agent
_deleteAgent.Post((CloudDeleteAction)action);
}
- if (IsDeletedFile(action))
+ if (_deleteAgent.IsDeletedFile(action))
{
//Clear the status of already deleted files to avoid reprocessing
if (action.LocalFile != null)
}
finally
{
- UpdateStatus(PithosStatus.InSynch);
+ if (_agent.IsEmpty)
+ _pauseEvent.Set();
+ UpdateStatus(PithosStatus.InSynch);
}
}
}
StatusNotification.Notify(new Notification());
}
- /// <summary>
- /// Processes cloud delete actions
- /// </summary>
- /// <param name="action">The delete action to execute</param>
- /// <returns></returns>
- /// <remarks>
- /// When a file/folder is deleted locally, we must delete it ASAP from the server and block any download
- /// operations that may be in progress.
- /// <para>
- /// A separate agent is used to process deletes because the main agent may be busy with a long operation.
- /// </para>
- /// </remarks>
- private async Task ProcessDelete(CloudDeleteAction action)
- {
- if (action == null)
- throw new ArgumentNullException("action");
- if (action.AccountInfo==null)
- throw new ArgumentException("The action.AccountInfo is empty","action");
- Contract.EndContractBlock();
-
- var accountInfo = action.AccountInfo;
-
- using (log4net.ThreadContext.Stacks["NETWORK"].Push("PROCESS"))
- {
- Log.InfoFormat("[ACTION] Start Processing {0}", action);
-
- var cloudFile = action.CloudFile;
-
- try
- {
- //Acquire a lock on the deleted file to prevent uploading/downloading operations from the normal
- //agent
- using (var gate = NetworkGate.Acquire(action.LocalFile.FullName, NetworkOperation.Deleting))
- {
-
- //Add the file URL to the deleted files list
- var key = GetFileKey(action.CloudFile);
- _deletedFiles[key] = DateTime.Now;
-
- _pauseAgent.Reset();
- // and then delete the file from the server
- DeleteCloudFile(accountInfo, cloudFile);
-
- Log.InfoFormat("[ACTION] End Delete {0}:{1}->{2}", action.Action, action.LocalFile,
- action.CloudFile.Name);
- }
- }
- catch (WebException exc)
- {
- Log.ErrorFormat("[WEB ERROR] {0} : {1} -> {2} due to exception\r\n{3}", action.Action, action.LocalFile, action.CloudFile, exc);
- }
- catch (OperationCanceledException)
- {
- throw;
- }
- catch (DirectoryNotFoundException)
- {
- Log.ErrorFormat("{0} : {1} -> {2} failed because the directory was not found.\n Rescheduling a delete",
- action.Action, action.LocalFile, action.CloudFile);
- //Repost a delete action for the missing file
- _deleteAgent.Post(action);
- }
- catch (FileNotFoundException)
- {
- Log.ErrorFormat("{0} : {1} -> {2} failed because the file was not found.\n Rescheduling a delete",
- action.Action, action.LocalFile, action.CloudFile);
- //Post a delete action for the missing file
- _deleteAgent.Post(action);
- }
- catch (Exception exc)
- {
- Log.ErrorFormat("[REQUEUE] {0} : {1} -> {2} due to exception\r\n{3}",
- action.Action, action.LocalFile, action.CloudFile, exc);
-
- _deleteAgent.Post(action);
- }
- finally
- {
- //Set the event when all delete actions are processed
- if (_deleteAgent.InputCount == 0)
- _pauseAgent.Set();
-
- }
- }
- }
-
- private static string GetFileKey(ObjectInfo info)
- {
- var key = String.Format("{0}/{1}/{2}", info.Account, info.Container,info.Name);
- return key;
- }
-
+
private async Task SyncFiles(AccountInfo accountInfo,CloudAction action)
{
if (accountInfo == null)
throw new ArgumentException("The CloudAction.AccountInfo is empty","cloudAction");
Contract.EndContractBlock();
- _pauseAgent.Wait();
+ _deleteAgent.PauseEvent.Wait();
//If the action targets a local file, add a treehash calculation
if (!(cloudAction is CloudDeleteAction) && cloudAction.LocalFile as FileInfo != null)
else
_agent.Post(cloudAction);
}
+
- /* class ObjectInfoByNameComparer:IEqualityComparer<ObjectInfo>
+ public IEnumerable<CloudAction> GetEnumerable()
{
- public bool Equals(ObjectInfo x, ObjectInfo y)
- {
- return x.Name.Equals(y.Name,StringComparison.InvariantCultureIgnoreCase);
- }
-
- public int GetHashCode(ObjectInfo obj)
- {
- return obj.Name.ToLower().GetHashCode();
- }
- }*/
-
- public void SynchNow()
- {
- if (_tcs!=null)
- _tcs.TrySetResult(true);
- else
- {
- //TODO: This may be OK for testing purposes, but we have no guarantee that it will
- //work properly in production
- PollRemoteFiles(repeat:false);
- }
+ return _agent.GetEnumerable();
}
- //Remote files are polled periodically. Any changes are processed
- public async Task PollRemoteFiles(DateTime? since = null,bool repeat=true)
+ public Task GetDeleteAwaiter()
{
- UpdateStatus(PithosStatus.Syncing);
- StatusNotification.Notify(new PollNotification());
-
- using (log4net.ThreadContext.Stacks["Retrieve Remote"].Push("All accounts"))
- {
- //If this poll fails, we will retry with the same since value
- var nextSince = since;
- try
- {
- //Next time we will check for all changes since the current check minus 1 second
- //This is done to ensure there are no discrepancies due to clock differences
- DateTime current = DateTime.Now.AddSeconds(-1);
-
- var tasks = from accountInfo in _accounts
- select ProcessAccountFiles(accountInfo, since);
-
- await TaskEx.WhenAll(tasks.ToList());
-
- _firstPoll = false;
- //Reschedule the poll with the current timestamp as a "since" value
- if (repeat)
- nextSince = current;
- else
- return;
- }
- catch (Exception ex)
- {
- Log.ErrorFormat("Error while processing accounts\r\n{0}",ex);
- //In case of failure retry with the same "since" value
- }
-
- UpdateStatus(PithosStatus.InSynch);
- //Wait for the polling interval to pass or the Manual flat to be toggled
- nextSince = await WaitForScheduledOrManualPoll(nextSince);
-
- PollRemoteFiles(nextSince);
-
- }
+ return _deleteAgent.PauseEvent.WaitAsync();
}
-
- private async Task<DateTime?> WaitForScheduledOrManualPoll(DateTime? since)
- {
- _tcs = new TaskCompletionSource<bool>();
- var wait = TaskEx.Delay(TimeSpan.FromSeconds(Settings.PollingInterval), _agent.CancellationToken);
- var signaledTask = await TaskEx.WhenAny(_tcs.Task, wait);
- //If polling is signalled by SynchNow, ignore the since tag
- if (signaledTask is Task<bool>)
- return null;
- return since;
- }
-
- public async Task ProcessAccountFiles(AccountInfo accountInfo,DateTime? since=null)
- {
- if (accountInfo==null)
- throw new ArgumentNullException("accountInfo");
- if (String.IsNullOrWhiteSpace(accountInfo.AccountPath))
- throw new ArgumentException("The AccountInfo.AccountPath is empty","accountInfo");
- Contract.EndContractBlock();
-
-
- using (log4net.ThreadContext.Stacks["Retrieve Remote"].Push(accountInfo.UserName))
- {
- _pauseAgent.Wait();
-
- Log.Info("Scheduled");
- var client = new CloudFilesClient(accountInfo)
- {
- Proxy = PithosMonitor.ProxyFromSettings(this.Settings)
- };
-
- var containers = client.ListContainers(accountInfo.UserName);
-
-
- CreateContainerFolders(accountInfo, containers);
-
- try
- {
- _pauseAgent.Wait();
- //Get the poll time now. We may miss some deletions but it's better to keep a file that was deleted
- //than delete a file that was created while we were executing the poll
- var pollTime = DateTime.Now;
-
- //Get the list of server objects changed since the last check
- //The name of the container is passed as state in order to create a dictionary of tasks in a subsequent step
- var listObjects = (from container in containers
- select Task<IList<ObjectInfo>>.Factory.StartNew(_ =>
- client.ListObjects(accountInfo.UserName,container.Name, since),container.Name)).ToList();
-
- var listShared = Task<IList<ObjectInfo>>.Factory.StartNew(_ => client.ListSharedObjects(since), "shared");
- listObjects.Add(listShared);
- var listTasks = await Task.Factory.WhenAll(listObjects.ToArray());
-
- using (log4net.ThreadContext.Stacks["SCHEDULE"].Push("Process Results"))
- {
- var dict = listTasks.ToDictionary(t => t.AsyncState);
-
- //Get all non-trash objects. Remember, the container name is stored in AsyncState
- var remoteObjects = from objectList in listTasks
- where (string) objectList.AsyncState != "trash"
- from obj in objectList.Result
- select obj;
-
- //TODO: Change the way deleted objects are detected.
- //The list operation returns all existing objects so we could detect deleted remote objects
- //by detecting objects that exist only locally. There are several cases where this is NOT the case:
- //1. The first time the application runs, as there may be files that were added while
- // the application was down.
- //2. An object that is currently being uploaded will not appear in the remote list
- // until the upload finishes.
- // SOLUTION 1: Check the upload/download queue for the file
- // SOLUTION 2: Check the SQLite states for the file's entry. If it is being uploaded,
- // or its last modification was after the current poll, don't delete it. This way we don't
- // delete objects whose upload finished too late to be included in the list.
- //We need to detect and protect against such situations
- //TODO: Does FileState have a LastModification field?
- //TODO: How do we update the LastModification field? Do we need to add SQLite triggers?
- // Do we need to use a proper SQLite schema?
- // We can create a trigger with
- // CREATE TRIGGER IF NOT EXISTS update_last_modified UPDATE ON FileState FOR EACH ROW
- // BEGIN
- // UPDATE FileState SET LastModification=datetime('now') WHERE Id=old.Id;
- // END;
- //
- //NOTE: Some files may have been deleted remotely while the application was down.
- // We DO have to delete those files. Checking the trash makes it easy to detect them,
- // Otherwise, we can't be really sure whether we need to upload or delete
- // the local-only files.
- // SOLUTION 1: Ask the user when such a local-only file is detected during the first poll.
- // SOLUTION 2: Mark conflict and ask the user as in #1
-
- var trashObjects = dict["trash"].Result;
- var sharedObjects = dict["shared"].Result;
-
- //Items with the same name, hash may be both in the container and the trash
- //Don't delete items that exist in the container
- var realTrash = from trash in trashObjects
- where
- !remoteObjects.Any(
- info => info.Name == trash.Name && info.Hash == trash.Hash)
- select trash;
- ProcessTrashedFiles(accountInfo, realTrash);
-
-
- var cleanRemotes = (from info in remoteObjects.Union(sharedObjects)
- let name = info.Name
- where !name.EndsWith(".ignore", StringComparison.InvariantCultureIgnoreCase) &&
- !name.StartsWith(FolderConstants.CacheFolder + "/",
- StringComparison.InvariantCultureIgnoreCase)
- select info).ToList();
-
- //TODO: Introduced state here, must remove somehow
- //Must move all this elsewhere
- SnapshotDifferencer differencer;
- if (!_differencers.TryGetValue(accountInfo.UserName,out differencer))
- {
- differencer = new SnapshotDifferencer();
- _differencers[accountInfo.UserName] = differencer;
- }
- differencer.Post(cleanRemotes);
-
- ProcessDeletedFiles(accountInfo, differencer.Deleted, pollTime);
-
- //Create a list of actions from the remote files
- var allActions = ChangesToActions(accountInfo, differencer.Changed)
- .Union(
- CreatesToActions(accountInfo,differencer.Created));
-
-
- //var relativePath = objectInfo.RelativeUrlToFilePath(accountInfo.UserName);
-
- //And remove those that are already being processed by the agent
- var distinctActions = allActions
- .Except(_agent.GetEnumerable(), new PithosMonitor.LocalFileComparer())
- .ToList();
-
- //Queue all the actions
- foreach (var message in distinctActions)
- {
- Post(message);
- }
-
- Log.Info("[LISTENER] End Processing");
- }
- }
- catch (Exception ex)
- {
- Log.ErrorFormat("[FAIL] ListObjects for{0} in ProcessRemoteFiles with {1}", accountInfo.UserName, ex);
- return;
- }
-
- Log.Info("[LISTENER] Finished");
-
- }
- }
-
-
- Dictionary<string, SnapshotDifferencer> _differencers= new Dictionary<string, SnapshotDifferencer>();
-
-/*
- Dictionary<string, List<ObjectInfo>> _currentSnapshot = new Dictionary<string, List<ObjectInfo>>();
- Dictionary<string, List<ObjectInfo>> _previousSnapshot = new Dictionary<string, List<ObjectInfo>>();
-*/
-
- /// <summary>
- /// Deletes local files that are not found in the list of cloud files
- /// </summary>
- /// <param name="accountInfo"></param>
- /// <param name="cloudFiles"></param>
- /// <param name="pollTime"></param>
- private void ProcessDeletedFiles(AccountInfo accountInfo, IEnumerable<ObjectInfo> cloudFiles, DateTime pollTime)
- {
- if (accountInfo == null)
- throw new ArgumentNullException("accountInfo");
- if (String.IsNullOrWhiteSpace(accountInfo.AccountPath))
- throw new ArgumentException("The AccountInfo.AccountPath is empty", "accountInfo");
- if (cloudFiles == null)
- throw new ArgumentNullException("cloudFiles");
- Contract.EndContractBlock();
-
- //On the first run
- if (_firstPoll)
- {
- //Only consider files that are not being modified, ie they are in the Unchanged state
- var deleteCandidates = FileState.Queryable.Where(state =>
- state.FilePath.StartsWith(accountInfo.AccountPath)
- && state.FileStatus == FileStatus.Unchanged).ToList();
-
-
- //TODO: filesToDelete must take into account the Others container
- var filesToDelete = (from deleteCandidate in deleteCandidates
- let localFile = FileInfoExtensions.FromPath(deleteCandidate.FilePath)
- let relativeFilePath = localFile.AsRelativeTo(accountInfo.AccountPath)
- where
- !cloudFiles.Any(r => r.RelativeUrlToFilePath(accountInfo.UserName) == relativeFilePath)
- select localFile).ToList();
-
-
-
- //Set the status of missing files to Conflict
- foreach (var item in filesToDelete)
- {
- //Try to acquire a gate on the file, to take into account files that have been dequeued
- //and are being processed
- using (var gate = NetworkGate.Acquire(item.FullName, NetworkOperation.Deleting))
- {
- if (gate.Failed)
- continue;
- StatusKeeper.SetFileState(item.FullName, FileStatus.Conflict, FileOverlayStatus.Deleted);
- }
- }
- UpdateStatus(PithosStatus.HasConflicts);
- StatusNotification.NotifyConflicts(filesToDelete, String.Format("{0} local files are missing from Pithos, possibly because they were deleted",filesToDelete.Count));
- StatusNotification.NotifyForFiles(filesToDelete, String.Format("{0} files were deleted", filesToDelete.Count), TraceLevel.Info);
- }
- else
- {
- var deletedFiles = new List<FileSystemInfo>();
- foreach (var objectInfo in cloudFiles)
- {
- var relativePath = objectInfo.RelativeUrlToFilePath(accountInfo.UserName);
- var item = GetFileAgent(accountInfo).GetFileSystemInfo(relativePath);
- if (item.Exists)
- {
- //Try to acquire a gate on the file, to take into account files that have been dequeued
- //and are being processed
- //TODO: The gate is not enough. Perhaps we need to keep a journal of processed files and check against
- //that as well.
-/*
- using (var gate = NetworkGate.Acquire(item.FullName, NetworkOperation.Deleting))
- {
- if (gate.Failed)
- continue;
-*/
- if ((item.Attributes & FileAttributes.ReadOnly) == FileAttributes.ReadOnly)
- {
- item.Attributes = item.Attributes & ~FileAttributes.ReadOnly;
-
- }
- item.Delete();
- DateTime lastDate;
- _lastSeen.TryRemove(item.FullName, out lastDate);
- deletedFiles.Add(item);
-/*
- }
-*/
- }
- StatusKeeper.SetFileState(item.FullName, FileStatus.Deleted, FileOverlayStatus.Deleted);
- }
- StatusNotification.NotifyForFiles(deletedFiles, String.Format("{0} files were deleted", deletedFiles.Count), TraceLevel.Info);
- }
-
- }
-
- private static void CreateContainerFolders(AccountInfo accountInfo, IEnumerable<ContainerInfo> containers)
+ public CancellationToken CancellationToken
{
- var containerPaths = from container in containers
- let containerPath = Path.Combine(accountInfo.AccountPath, container.Name)
- where container.Name != FolderConstants.TrashContainer && !Directory.Exists(containerPath)
- select containerPath;
-
- foreach (var path in containerPaths)
- {
- Directory.CreateDirectory(path);
- }
- }
-
- //Creates an appropriate action for each server file
- private IEnumerable<CloudAction> ChangesToActions(AccountInfo accountInfo,IEnumerable<ObjectInfo> changes)
- {
- if (changes==null)
- throw new ArgumentNullException();
- Contract.EndContractBlock();
- var fileAgent = GetFileAgent(accountInfo);
-
- //In order to avoid multiple iterations over the files, we iterate only once
- //over the remote files
- foreach (var objectInfo in changes)
- {
- var relativePath = objectInfo.RelativeUrlToFilePath(accountInfo.UserName);
- //and remove any matching objects from the list, adding them to the commonObjects list
- if (fileAgent.Exists(relativePath))
- {
- //If a directory object already exists, we don't need to perform any other action
- var localFile = fileAgent.GetFileSystemInfo(relativePath);
- if (objectInfo.Content_Type == @"application/directory" && localFile is DirectoryInfo)
- continue;
- using (new SessionScope(FlushAction.Never))
- {
- var state = StatusKeeper.GetStateByFilePath(localFile.FullName);
- _lastSeen[localFile.FullName] = DateTime.Now;
- //FileState.FindByFilePath(localFile.FullName);
- //Common files should be checked on a per-case basis to detect differences, which is newer
-
- yield return new CloudAction(accountInfo, CloudActionType.MustSynch,
- localFile, objectInfo, state, accountInfo.BlockSize,
- accountInfo.BlockHash);
- }
- }
- else
- {
- //Remote files should be downloaded
- yield return new CloudDownloadAction(accountInfo,objectInfo);
- }
- }
+ get { return _agent.CancellationToken; }
}
- private IEnumerable<CloudAction> CreatesToActions(AccountInfo accountInfo,IEnumerable<ObjectInfo> creates)
- {
- if (creates==null)
- throw new ArgumentNullException();
- Contract.EndContractBlock();
- var fileAgent = GetFileAgent(accountInfo);
-
- //In order to avoid multiple iterations over the files, we iterate only once
- //over the remote files
- foreach (var objectInfo in creates)
- {
- var relativePath = objectInfo.RelativeUrlToFilePath(accountInfo.UserName);
- //and remove any matching objects from the list, adding them to the commonObjects list
- if (fileAgent.Exists(relativePath))
- {
- //If the object already exists, we probably have a conflict
- //If a directory object already exists, we don't need to perform any other action
- var localFile = fileAgent.GetFileSystemInfo(relativePath);
- StatusKeeper.SetFileState(localFile.FullName,FileStatus.Conflict,FileOverlayStatus.Conflict);
- }
- else
- {
- //Remote files should be downloaded
- yield return new CloudDownloadAction(accountInfo,objectInfo);
- }
- }
- }
-
- //Creates an appropriate action for each server file
-/*
- private IEnumerable<CloudAction> ObjectsToActions(AccountInfo accountInfo,IEnumerable<ObjectInfo> remote)
- {
- if (remote==null)
- throw new ArgumentNullException();
- Contract.EndContractBlock();
- var fileAgent = GetFileAgent(accountInfo);
-
- //In order to avoid multiple iterations over the files, we iterate only once
- //over the remote files
- foreach (var objectInfo in remote)
- {
- var relativePath = objectInfo.RelativeUrlToFilePath(accountInfo.UserName);
- //and remove any matching objects from the list, adding them to the commonObjects list
-
- if (fileAgent.Exists(relativePath))
- {
- //If a directory object already exists, we don't need to perform any other action
- var localFile = fileAgent.GetFileSystemInfo(relativePath);
- if (objectInfo.Content_Type == @"application/directory" && localFile is DirectoryInfo)
- continue;
- using (new SessionScope(FlushAction.Never))
- {
- var state = StatusKeeper.GetStateByFilePath(localFile.FullName);
- _lastSeen[localFile.FullName] = DateTime.Now;
- //FileState.FindByFilePath(localFile.FullName);
- //Common files should be checked on a per-case basis to detect differences, which is newer
-
- yield return new CloudAction(accountInfo, CloudActionType.MustSynch,
- localFile, objectInfo, state, accountInfo.BlockSize,
- accountInfo.BlockHash);
- }
- }
- else
- {
- //If there is no match we add them to the localFiles list
- //but only if the file is not marked for deletion
- var targetFile = Path.Combine(accountInfo.AccountPath, relativePath);
- var fileStatus = StatusKeeper.GetFileStatus(targetFile);
- if (fileStatus != FileStatus.Deleted)
- {
- //Remote files should be downloaded
- yield return new CloudDownloadAction(accountInfo,objectInfo);
- }
- }
- }
- }
-*/
-
private static FileAgent GetFileAgent(AccountInfo accountInfo)
{
return AgentLocator<FileAgent>.Get(accountInfo.AccountPath);
}
- private void ProcessTrashedFiles(AccountInfo accountInfo,IEnumerable<ObjectInfo> trashObjects)
- {
- var fileAgent = GetFileAgent(accountInfo);
- foreach (var trashObject in trashObjects)
- {
- var barePath = trashObject.RelativeUrlToFilePath(accountInfo.UserName);
- //HACK: Assume only the "pithos" container is used. Must find out what happens when
- //deleting a file from a different container
- var relativePath = Path.Combine("pithos", barePath);
- fileAgent.Delete(relativePath);
- }
- }
private void RenameCloudFile(AccountInfo accountInfo,CloudMoveAction action)
NativeMethods.RaiseChangeNotification(newFilePath);
}
- private void DeleteCloudFile(AccountInfo accountInfo, ObjectInfo cloudFile)
- {
- if (accountInfo == null)
- throw new ArgumentNullException("accountInfo");
- if (cloudFile==null)
- throw new ArgumentNullException("cloudFile");
-
- if (String.IsNullOrWhiteSpace(cloudFile.Container))
- throw new ArgumentException("Invalid container", "cloudFile");
- Contract.EndContractBlock();
-
- var fileAgent = GetFileAgent(accountInfo);
-
- using ( log4net.ThreadContext.Stacks["DeleteCloudFile"].Push("Delete"))
- {
- var fileName= cloudFile.RelativeUrlToFilePath(accountInfo.UserName);
- var info = fileAgent.GetFileSystemInfo(fileName);
- var fullPath = info.FullName.ToLower();
-
- StatusKeeper.SetFileOverlayStatus(fullPath, FileOverlayStatus.Modified);
-
- var account = cloudFile.Account ?? accountInfo.UserName;
- var container = cloudFile.Container ;//?? FolderConstants.PithosContainer;
-
- var client = new CloudFilesClient(accountInfo);
- client.DeleteObject(account, container, cloudFile.Name);
-
- StatusKeeper.ClearFileStatus(fullPath);
- }
- }
-
//Download a file.
private async Task DownloadCloudFile(AccountInfo accountInfo, ObjectInfo cloudFile , string filePath)
{
{
if (gate.Failed)
return;
- //The file's hashmap will be stored in the same location with the extension .hashmap
- //var hashPath = Path.Combine(FileAgent.CachePath, relativePath + ".hashmap");
var client = new CloudFilesClient(accountInfo);
var account = cloudFile.Account;
}
- //Returns true if an action concerns a file that was deleted
- private bool IsDeletedFile(CloudAction action)
- {
- //Doesn't work for actions targeting shared files
- if (action.IsShared)
- return false;
- var key = GetFileKey(action.CloudFile);
- DateTime entryDate;
- if (_deletedFiles.TryGetValue(key, out entryDate))
- {
- //If the delete entry was created after this action, abort the action
- if (entryDate > action.Created)
- return true;
- //Otherwise, remove the stale entry
- _deletedFiles.TryRemove(key, out entryDate);
- }
- return false;
- }
+
private bool HandleUploadWebException(CloudAction action, WebException exc)
{
projects / pithos-ms-client / blobdiff