-using System;
+#region
+/* -----------------------------------------------------------------------
+ * <copyright file="FileAgent.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
+using System;
using System.Collections.Generic;
-using System.ComponentModel.Composition;
-using System.Diagnostics;
using System.Diagnostics.Contracts;
using System.IO;
using System.Linq;
-using System.Text;
+using System.Reflection;
+using System.Threading.Tasks;
using Pithos.Interfaces;
using Pithos.Network;
+using log4net;
namespace Pithos.Core.Agents
{
- [Export]
+// [Export]
public class FileAgent
{
+ private static readonly ILog Log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+
Agent<WorkflowState> _agent;
private FileSystemWatcher _watcher;
+ private FileSystemWatcherAdapter _adapter;
- [Import]
+ //[Import]
public IStatusKeeper StatusKeeper { get; set; }
- [Import]
+
+ public IStatusNotification StatusNotification { get; set; }
+ //[Import]
public IPithosWorkflow Workflow { get; set; }
- [Import]
+ //[Import]
public WorkflowAgent WorkflowAgent { get; set; }
- public string RootPath { get; private set; }
+ private AccountInfo AccountInfo { get; set; }
+
+ internal string RootPath { get; set; }
+
+ private FileEventIdleBatch _eventIdleBatch;
+
+ public TimeSpan IdleTimeout { get; set; }
+
+
+ private void ProcessBatchedEvents(Dictionary<string, FileSystemEventArgs[]> fileEvents)
+ {
+ StatusNotification.SetPithosStatus(PithosStatus.LocalSyncing,String.Format("Uploading {0} files",fileEvents.Count));
+ foreach (var fileEvent in fileEvents)
+ {
+ var filePath = fileEvent.Key;
+ var changes = fileEvent.Value;
+
+ if (Ignore(filePath)) continue;
+
+ foreach (var change in changes)
+ {
+ if (change.ChangeType == WatcherChangeTypes.Renamed)
+ {
+ var rename = (MovedEventArgs) change;
+ _agent.Post(new WorkflowState(change)
+ {
+ AccountInfo = AccountInfo,
+ OldPath = rename.OldFullPath,
+ OldFileName = Path.GetFileName(rename.OldName),
+ Path = rename.FullPath,
+ FileName = Path.GetFileName(rename.Name),
+ TriggeringChange = rename.ChangeType
+ });
+ }
+ else
+ _agent.Post(new WorkflowState(change)
+ {
+ AccountInfo = AccountInfo,
+ Path = change.FullPath,
+ FileName = Path.GetFileName(change.Name),
+ TriggeringChange = change.ChangeType
+ });
+ }
+ }
+ StatusNotification.SetPithosStatus(PithosStatus.LocalComplete);
+ }
- public void Start(string rootPath)
+ public void Start(AccountInfo accountInfo,string rootPath)
{
+ if (accountInfo==null)
+ throw new ArgumentNullException("accountInfo");
+ if (String.IsNullOrWhiteSpace(rootPath))
+ throw new ArgumentNullException("rootPath");
+ if (!Path.IsPathRooted(rootPath))
+ throw new ArgumentException("rootPath must be an absolute path","rootPath");
+ if (IdleTimeout == null)
+ throw new InvalidOperationException("IdleTimeout must have a valid value");
+ Contract.EndContractBlock();
+
+ AccountInfo = accountInfo;
RootPath = rootPath;
- _watcher = new FileSystemWatcher(rootPath);
- _watcher.Changed += OnFileEvent;
- _watcher.Created += OnFileEvent;
- _watcher.Deleted += OnFileEvent;
- _watcher.Renamed += OnRenameEvent;
+
+ _eventIdleBatch = new FileEventIdleBatch((int)IdleTimeout.TotalMilliseconds, ProcessBatchedEvents);
+
+ _watcher = new FileSystemWatcher(rootPath) {IncludeSubdirectories = true,InternalBufferSize=8*4096};
+ _adapter = new FileSystemWatcherAdapter(_watcher);
+
+ _adapter.Changed += OnFileEvent;
+ _adapter.Created += OnFileEvent;
+ _adapter.Deleted += OnFileEvent;
+ //_adapter.Renamed += OnRenameEvent;
+ _adapter.Moved += OnMoveEvent;
_watcher.EnableRaisingEvents = true;
loop = () =>
{
var message = inbox.Receive();
- var process = message.ContinueWith(t =>
- {
- var state = t.Result;
- Process(state);
- inbox.DoAsync(loop);
- });
-
- process.ContinueWith(t =>
- {
- inbox.DoAsync(loop);
- if (t.IsFaulted)
- {
- var ex = t.Exception.InnerException;
- if (ex is OperationCanceledException)
- inbox.Stop();
- Trace.TraceError("[ERROR] File Event Processing:\r{0}", ex);
- }
- });
-
+ var process=message.Then(Process,inbox.CancellationToken);
+ inbox.LoopAsync(process,loop,ex=>
+ Log.ErrorFormat("[ERROR] File Event Processing:\r{0}", ex));
};
loop();
});
}
+ private Task<object> Process(WorkflowState state)
+ {
+ if (state==null)
+ throw new ArgumentNullException("state");
+ Contract.EndContractBlock();
+
+ if (Ignore(state.Path))
+ return CompletedTask<object>.Default;
+
+ var networkState = NetworkGate.GetNetworkState(state.Path);
+ //Skip if the file is already being downloaded or uploaded and
+ //the change is create or modify
+ if (networkState != NetworkOperation.None &&
+ (
+ state.TriggeringChange == WatcherChangeTypes.Created ||
+ state.TriggeringChange == WatcherChangeTypes.Changed
+ ))
+ return CompletedTask<object>.Default;
+
+ try
+ {
+ //StatusKeeper.EnsureFileState(state.Path);
+
+ UpdateFileStatus(state);
+ UpdateOverlayStatus(state);
+ UpdateFileChecksum(state);
+ WorkflowAgent.Post(state);
+ }
+ catch (IOException exc)
+ {
+ if (File.Exists(state.Path))
+ {
+ Log.WarnFormat("File access error occured, retrying {0}\n{1}", state.Path, exc);
+ _agent.Post(state);
+ }
+ else
+ {
+ Log.WarnFormat("File {0} does not exist. Will be ignored\n{1}", state.Path, exc);
+ }
+ }
+ catch (Exception exc)
+ {
+ Log.WarnFormat("Error occured while indexing{0}. The file will be skipped\n{1}",
+ state.Path, exc);
+ }
+ return CompletedTask<object>.Default;
+ }
+
public bool Pause
{
get { return _watcher == null || !_watcher.EnableRaisingEvents; }
}
}
- public string FragmentsPath { get; set; }
+ public string CachePath { get; set; }
+
+ /*private List<string> _selectivePaths = new List<string>();
+ public List<string> SelectivePaths
+ {
+ get { return _selectivePaths; }
+ set { _selectivePaths = value; }
+ }
+*/
+ public Selectives Selectives { get; set; }
+
public void Post(WorkflowState workflowState)
{
+ if (workflowState == null)
+ throw new ArgumentNullException("workflowState");
+ Contract.EndContractBlock();
+
_agent.Post(workflowState);
}
{
if (_watcher != null)
{
- _watcher.Changed -= OnFileEvent;
- _watcher.Created -= OnFileEvent;
- _watcher.Deleted -= OnFileEvent;
- _watcher.Renamed -= OnRenameEvent;
_watcher.Dispose();
}
_watcher = null;
- _agent.Stop();
+ if (_agent!=null)
+ _agent.Stop();
}
// Enumerate all files in the Pithos directory except those in the Fragment folder
return monitoredFiles;
}
+ public IEnumerable<string> EnumerateFilesSystemInfosAsRelativeUrls(string searchPattern="*")
+ {
+ var rootDir = new DirectoryInfo(RootPath);
+ var monitoredFiles = from file in rootDir.EnumerateFileSystemInfos(searchPattern, SearchOption.AllDirectories)
+ where !Ignore(file.FullName)
+ select file.AsRelativeUrlTo(RootPath);
+ return monitoredFiles;
+ }
+
private bool Ignore(string filePath)
{
- if (filePath.StartsWith(FragmentsPath))
+ //Ignore all first-level directories and files (ie at the container folders level)
+ if (FoundBelowRoot(filePath, RootPath,1))
return true;
- return false;
+
+ //Ignore first-level items under the "others" folder (ie at the accounts folders level).
+ var othersPath = Path.Combine(RootPath, FolderConstants.OthersFolder);
+ if (FoundBelowRoot(filePath, othersPath,1))
+ return true;
+
+ //Ignore second-level (container) folders under the "others" folder (ie at the container folders level).
+ if (FoundBelowRoot(filePath, othersPath,2))
+ return true;
+
+
+ //Ignore anything happening in the cache path
+ if (filePath.StartsWith(CachePath))
+ return true;
+ if (_ignoreFiles.ContainsKey(filePath.ToLower()))
+ return true;
+
+ //If selective sync is enabled, propagate folder events
+ if (Selectives.IsSelectiveEnabled(AccountInfo.AccountKey) && Directory.Exists(filePath))
+ return false;
+ //Ignore if selective synchronization is defined,
+ //And the target file is not below any of the selective paths
+ return !Selectives.IsSelected(AccountInfo, filePath);
+ }
+
+/* private static bool FoundInRoot(string filePath, string rootPath)
+ {
+ //var rootDirectory = new DirectoryInfo(rootPath);
+
+ //If the paths are equal, return true
+ if (filePath.Equals(rootPath, StringComparison.InvariantCultureIgnoreCase))
+ return true;
+
+ //If the filepath is below the root path
+ if (filePath.StartsWith(rootPath,StringComparison.InvariantCulture))
+ {
+ //Get the relative path
+ var relativePath = filePath.Substring(rootPath.Length + 1);
+ //If the relativePath does NOT contains a path separator, we found a match
+ return (!relativePath.Contains(@"\"));
+ }
+
+ //If the filepath is not under the root path, return false
+ return false;
+ }*/
+
+
+ private static bool FoundBelowRoot(string filePath, string rootPath,int level)
+ {
+ //var rootDirectory = new DirectoryInfo(rootPath);
+
+ //If the paths are equal, return true
+ if (filePath.Equals(rootPath, StringComparison.InvariantCultureIgnoreCase))
+ return true;
+
+ //If the filepath is below the root path
+ if (filePath.StartsWith(rootPath,StringComparison.InvariantCulture))
+ {
+ //Get the relative path
+ var relativePath = filePath.Substring(rootPath.Length + 1);
+ //If the relativePath does NOT contains a path separator, we found a match
+ var levels=relativePath.ToCharArray().Count(c=>c=='\\')+1;
+ return levels==level;
+ }
+
+ //If the filepath is not under the root path, return false
+ return false;
}
//Post a Change message for all events except rename
void OnFileEvent(object sender, FileSystemEventArgs e)
{
- //Ignore events that affect the Fragments folder
+ //Ignore events that affect the cache folder
var filePath = e.FullPath;
if (Ignore(filePath))
return;
- _agent.Post(new WorkflowState { Path = filePath, FileName = e.Name, TriggeringChange = e.ChangeType });
+ _eventIdleBatch.Post(e);
}
+/*
//Post a Change message for renames containing the old and new names
void OnRenameEvent(object sender, RenamedEventArgs e)
{
_agent.Post(new WorkflowState
{
+ AccountInfo=AccountInfo,
OldPath = oldFullPath,
OldFileName = e.OldName,
Path = fullPath,
TriggeringChange = e.ChangeType
});
}
+*/
-
- private void Process(WorkflowState state)
+ //Post a Change message for moves containing the old and new names
+ void OnMoveEvent(object sender, MovedEventArgs e)
{
- Debug.Assert(!Ignore(state.Path));
-
- var networkState = NetworkGate.GetNetworkState(state.Path);
- //Skip if the file is already being downloaded or uploaded and
- //the change is create or modify
- if (networkState != NetworkOperation.None &&
- (
- state.TriggeringChange == WatcherChangeTypes.Created ||
- state.TriggeringChange == WatcherChangeTypes.Changed
- ))
+ var oldFullPath = e.OldFullPath;
+ var fullPath = e.FullPath;
+ if (Ignore(oldFullPath) || Ignore(fullPath))
return;
- try
- {
- UpdateFileStatus(state);
- UpdateOverlayStatus(state);
- UpdateFileChecksum(state);
- WorkflowAgent.Post(state);
- }
- catch (IOException exc)
- {
- Trace.TraceWarning("File access error occured, retrying {0}\n{1}", state.Path, exc);
- _agent.Post(state);
- }
- catch (Exception exc)
- {
- Trace.TraceWarning("Error occured while indexing{0. The file will be skipped}\n{1}", state.Path, exc);
- }
+ _eventIdleBatch.Post(e);
}
+
+
private Dictionary<WatcherChangeTypes, FileStatus> _statusDict = new Dictionary<WatcherChangeTypes, FileStatus>
- {
+ {
{WatcherChangeTypes.Created,FileStatus.Created},
{WatcherChangeTypes.Changed,FileStatus.Modified},
{WatcherChangeTypes.Deleted,FileStatus.Deleted},
{WatcherChangeTypes.Renamed,FileStatus.Renamed}
};
+ private Dictionary<string, string> _ignoreFiles=new Dictionary<string, string>();
+
private WorkflowState UpdateFileStatus(WorkflowState state)
{
- Debug.Assert(!state.Path.Contains("fragments"));
- Debug.Assert(!state.Path.EndsWith(".ignore", StringComparison.InvariantCultureIgnoreCase));
+ if (state==null)
+ throw new ArgumentNullException("state");
+ if (String.IsNullOrWhiteSpace(state.Path))
+ throw new ArgumentException("The state's Path can't be empty","state");
+ Contract.EndContractBlock();
- string path = state.Path;
- FileStatus status = _statusDict[state.TriggeringChange];
+ var path = state.Path;
+ var status = _statusDict[state.TriggeringChange];
var oldStatus = Workflow.StatusKeeper.GetFileStatus(path);
if (status == oldStatus)
{
private WorkflowState UpdateOverlayStatus(WorkflowState state)
{
+ if (state==null)
+ throw new ArgumentNullException("state");
+ Contract.EndContractBlock();
+
if (state.Skip)
return state;
switch (state.Status)
{
case FileStatus.Created:
+ this.StatusKeeper.SetFileOverlayStatus(state.Path, FileOverlayStatus.Modified,state.ShortHash);
+ break;
case FileStatus.Modified:
- this.StatusKeeper.SetFileOverlayStatus(state.Path, FileOverlayStatus.Modified);
+ this.StatusKeeper.SetFileOverlayStatus(state.Path, FileOverlayStatus.Modified,state.ShortHash);
break;
case FileStatus.Deleted:
- this.StatusKeeper.RemoveFileOverlayStatus(state.Path);
+ //this.StatusAgent.RemoveFileOverlayStatus(state.Path);
break;
case FileStatus.Renamed:
- this.StatusKeeper.RemoveFileOverlayStatus(state.OldPath);
- this.StatusKeeper.SetFileOverlayStatus(state.Path, FileOverlayStatus.Modified);
+ this.StatusKeeper.ClearFileStatus(state.OldPath);
+ this.StatusKeeper.SetFileOverlayStatus(state.Path, FileOverlayStatus.Modified,state.ShortHash);
break;
case FileStatus.Unchanged:
- this.StatusKeeper.SetFileOverlayStatus(state.Path, FileOverlayStatus.Normal);
+ this.StatusKeeper.SetFileOverlayStatus(state.Path, FileOverlayStatus.Normal,state.ShortHash);
break;
}
if (Directory.Exists(path))
return state;
- string hash = Signature.CalculateMD5(path);
+ var info = new FileInfo(path);
- StatusKeeper.UpdateFileChecksum(path, hash);
+ using (StatusNotification.GetNotifier("Hashing {0}", "Finished Hashing {0}", info.Name))
+ {
- state.Hash = hash;
- return state;
+ var shortHash = info.ComputeShortHash();
+
+ string merkleHash = info.CalculateHash(StatusKeeper.BlockSize, StatusKeeper.BlockHash);
+ StatusKeeper.UpdateFileChecksum(path, shortHash, merkleHash);
+
+ state.Hash = merkleHash;
+ return state;
+ }
}
//Does the file exist in the container's local folder?
if (File.Exists(absolutePath))
return true;
//Or a directory?
- if (Directory.Exists(RootPath))
+ if (Directory.Exists(absolutePath))
return true;
//Fail if it is neither
return false;
}
- public FileInfo GetFileInfo(string relativePath)
+ public static FileAgent GetFileAgent(AccountInfo accountInfo)
+ {
+ return GetFileAgent(accountInfo.AccountPath);
+ }
+
+ public static FileAgent GetFileAgent(string rootPath)
+ {
+ return AgentLocator<FileAgent>.Get(rootPath.ToLower());
+ }
+
+
+ public FileSystemInfo GetFileSystemInfo(string relativePath)
{
if (String.IsNullOrWhiteSpace(relativePath))
throw new ArgumentNullException("relativePath");
Contract.EndContractBlock();
var absolutePath = Path.Combine(RootPath, relativePath);
- Debug.Assert(File.Exists(absolutePath));
- return new FileInfo(absolutePath);
+ if (Directory.Exists(absolutePath))
+ return new DirectoryInfo(absolutePath).WithProperCapitalization();
+ else
+ return new FileInfo(absolutePath).WithProperCapitalization();
}
+
+ public void Delete(string relativePath)
+ {
+ var absolutePath = Path.Combine(RootPath, relativePath).ToLower();
+ if (Log.IsDebugEnabled)
+ Log.DebugFormat("Deleting {0}", absolutePath);
+ if (File.Exists(absolutePath))
+ {
+ try
+ {
+ File.Delete(absolutePath);
+ }
+ //The file may have been deleted by another thread. Just ignore the relevant exception
+ catch (FileNotFoundException) { }
+ }
+ else if (Directory.Exists(absolutePath))
+ {
+ try
+ {
+ Directory.Delete(absolutePath, true);
+ }
+ //The directory may have been deleted by another thread. Just ignore the relevant exception
+ catch (DirectoryNotFoundException){}
+ }
+
+ //_ignoreFiles[absolutePath] = absolutePath;
+ StatusKeeper.ClearFileStatus(absolutePath);
+ }
}
}
projects / pithos-ms-client / blobdiff