-using System;
+// -----------------------------------------------------------------------
+// <copyright file="WorkflowAgent.cs" company="GRNET">
+// Copyright 2011 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>
+// -----------------------------------------------------------------------
+
+using System;
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
-using System.Threading.Tasks.Dataflow;
+using Castle.ActiveRecord;
using Pithos.Interfaces;
using Pithos.Network;
using log4net;
[Export]
public class WorkflowAgent
{
- private ActionBlock<WorkflowState> _agent;
+ Agent<WorkflowState> _agent;
public IStatusNotification StatusNotification { get; set; }
- [Import]
+ [System.ComponentModel.Composition.Import]
public IStatusKeeper StatusKeeper { get; set; }
- [Import]
+ [System.ComponentModel.Composition.Import]
public NetworkAgent NetworkAgent { get; set; }
- public ActionBlock<WorkflowState> Agent
- {
- get { return _agent; }
- }
-
private static readonly ILog Log = LogManager.GetLogger("WorkflowAgent");
public void Start()
{
- /*_agent = new ActionBlock<WorkflowState>(message =>
+ _agent = Agent<WorkflowState>.Start(inbox =>
{
Action loop = null;
loop = () =>
{
- //var message = inbox.Receive();
- Process(message);
+ var message = inbox.Receive();
var process = message.Then(Process, inbox.CancellationToken);
inbox.LoopAsync(process,loop,ex=>
Log.ErrorFormat("[ERROR] Synch for {0}:\r{1}", message.Result.FileName, ex));
};
loop();
- });*/
- _agent = new ActionBlock<WorkflowState>(async message =>
- {
- try
- {
- var action=await TaskEx.Run(()=>Process(message));
- if (action!=null)
- NetworkAgent.Post(action);
- }
- catch (Exception ex)
- {
- Log.ErrorFormat("[ERROR] Synch for {0}:\r{1}", message.FileName, ex);
- }
- });
+ });
}
- private CloudAction Process(WorkflowState state)
+ private Task<object> Process(WorkflowState state)
{
var accountInfo = state.AccountInfo;
using (log4net.ThreadContext.Stacks["Workflow"].Push("Process"))
{
- if (Log.IsDebugEnabled) Log.DebugFormat("State {0} {1} {2}", state.FileName,state.Status,state.TriggeringChange);
-
- if (state.Skip)
- {
- if (Log.IsDebugEnabled) Log.DebugFormat("Skipping {0}",state.FileName);
-
- return null;
- }
- string path = state.Path.ToLower();
-
- //Bypass deleted files, unless the status is Deleted
- if (!File.Exists(path) && state.Status != FileStatus.Deleted)
+ try
{
- state.Skip = true;
- this.StatusKeeper.ClearFileStatus(path);
-
- if (Log.IsDebugEnabled) Log.DebugFormat("Skipped missing {0}", state.FileName);
- return null;
+ if (Log.IsDebugEnabled)
+ Log.DebugFormat("State {0} {1} {2}", state.FileName, state.Status, state.TriggeringChange);
+
+ if (state.Skip)
+ {
+ if (Log.IsDebugEnabled) Log.DebugFormat("Skipping {0}", state.FileName);
+
+ return CompletedTask<object>.Default;
+ }
+
+ var info = Directory.Exists(state.Path) ? (FileSystemInfo)new DirectoryInfo(state.Path) : new FileInfo(state.Path);
+
+ //Bypass deleted files, unless the status is Deleted
+ if (!info.Exists && state.Status != FileStatus.Deleted)
+ {
+ state.Skip = true;
+ this.StatusKeeper.ClearFileStatus(state.Path);
+
+ if (Log.IsDebugEnabled) Log.DebugFormat("Skipped missing {0}", state.FileName);
+
+ return CompletedTask<object>.Default;
+ }
+
+ using (new SessionScope(FlushAction.Never))
+ {
+
+ var fileState = StatusKeeper.GetStateByFilePath(state.Path);
+
+ switch (state.Status)
+ {
+ case FileStatus.Created:
+ case FileStatus.Modified:
+ NetworkAgent.Post(new CloudUploadAction(accountInfo, info, fileState,
+ accountInfo.BlockSize,
+ accountInfo.BlockHash));
+ break;
+ case FileStatus.Deleted:
+ if (fileState != null)
+ {
+ var children = StatusKeeper.GetChildren(fileState);
+ foreach (var child in children)
+ {
+ var childInfo = child.IsFolder
+ ? (FileSystemInfo) new DirectoryInfo(child.FilePath)
+ : new FileInfo(child.FilePath);
+ NetworkAgent.Post(new CloudDeleteAction(accountInfo, childInfo, child));
+ }
+ }
+ NetworkAgent.Post(new CloudDeleteAction(accountInfo, info, fileState));
+ break;
+ case FileStatus.Renamed:
+ FileSystemInfo oldInfo = Directory.Exists(state.OldPath)
+ ? (FileSystemInfo) new DirectoryInfo(state.OldPath)
+ : new FileInfo(state.OldPath);
+ FileSystemInfo newInfo = Directory.Exists(state.Path)
+ ? (FileSystemInfo) new DirectoryInfo(state.Path)
+ : new FileInfo(state.Path);
+ NetworkAgent.Post(new CloudMoveAction(accountInfo, CloudActionType.RenameCloud,
+ oldInfo,
+ newInfo));
+ break;
+ }
+ }
+
+ return CompletedTask<object>.Default;
}
-
- var fileState = FileState.FindByFilePath(path);
- var info = new FileInfo(path);
-
-
- switch (state.Status)
+ catch (Exception ex)
{
- case FileStatus.Created:
- case FileStatus.Modified:
- return new CloudUploadAction(accountInfo,info, fileState, accountInfo.BlockSize,
- accountInfo.BlockHash);
- case FileStatus.Deleted:
- return new CloudDeleteAction(accountInfo,info, fileState);
- case FileStatus.Renamed:
- return new CloudMoveAction(accountInfo,CloudActionType.RenameCloud,
- new FileInfo(state.OldPath),
- new FileInfo(state.Path));
+ Log.Error(ex.ToString());
+ throw;
}
- return null;
}
}
.ToLower();
+
+ var account = accountInfo;
var pendingEntries = from state in FileState.Queryable
where state.FileStatus != FileStatus.Unchanged &&
!state.FilePath.StartsWith(cachePath) &&
!state.FilePath.EndsWith(".ignore") &&
- state.FilePath.StartsWith(accountInfo.AccountPath)
+ state.FilePath.StartsWith(account.AccountPath)
select state;
+ var pendingStates = new List<WorkflowState>();
+ foreach (var state in pendingEntries)
+ {
+ pendingStates.Add(new WorkflowState(account, state));
+ }
if (Log.IsDebugEnabled)
- Log.DebugFormat("Found {0} interrupted files",pendingEntries.Count());
-
- var validEntries = from state in pendingEntries
- select new WorkflowState
- {
- AccountInfo=accountInfo,
- Path = state.FilePath.ToLower(),
- FileName = Path.GetFileName(state.FilePath).ToLower(),
- Hash = state.Checksum,
- Status = state.OverlayStatus == FileOverlayStatus.Unversioned
- ? FileStatus.Created
- : state.FileStatus,
- TriggeringChange =
- state.OverlayStatus == FileOverlayStatus.Unversioned
- ? WatcherChangeTypes.Created
- : WatcherChangeTypes.Changed
- };
- foreach (var entry in validEntries)
- {
- Post(entry);
+ Log.DebugFormat("Found {0} interrupted files", pendingStates.Count);
+
+
+ foreach (var entry in pendingStates)
+ {
+ Post(entry);
}
}
- }
+ }
+
-
public void Post(WorkflowState workflowState)
{
if (Log.IsDebugEnabled)
Log.DebugFormat("Posted {0} {1} {2}", workflowState.Path, workflowState.Status, workflowState.TriggeringChange);
- Agent.Post(workflowState);
- }
+
+ //Remove invalid state
+ //For now, ignore paths
+ /* if (Directory.Exists(workflowState.Path))
+ return;*/
+ //TODO: Need to handle folder renames
+
+ Debug.Assert(workflowState.Path.StartsWith(workflowState.AccountInfo.AccountPath, StringComparison.InvariantCultureIgnoreCase), "File from wrong account posted");
+
+ _agent.Post(workflowState);
+ }
+
}
}