root / trunk / Pithos.Core / PithosWorkflow.cs @ cfed7823
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using System; |
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using System.Collections.Generic; |
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using System.ComponentModel.Composition; |
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using System.Linq; |
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using System.Runtime.InteropServices; |
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using System.Text; |
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using System.Threading; |
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using System.Threading.Tasks; |
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using Pithos.Interfaces; |
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using System.IO; |
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using System.Diagnostics; |
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|
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namespace Pithos.Core |
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{ |
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[Export(typeof(IPithosWorkflow))] |
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public class PithosWorkflow:IPithosWorkflow |
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{ |
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[Import] |
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public IPithosSettings Settings { get; set; } |
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|
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[Import] |
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public IStatusKeeper StatusKeeper { get; set; } |
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|
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public FileStatus SetFileStatus(string path, FileStatus status) |
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{ |
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Debug.Assert(!path.Contains("fragments")); |
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Debug.Assert(!path.EndsWith(".ignore",StringComparison.InvariantCultureIgnoreCase)); |
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|
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if (String.IsNullOrWhiteSpace(path)) |
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throw new ArgumentNullException("path", "The path parameter must not be emtpy"); |
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|
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var oldStatus=StatusKeeper.GetFileStatus(path); |
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|
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if (oldStatus == status) |
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return oldStatus; |
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|
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switch(oldStatus) |
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{ |
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case FileStatus.Unchanged : |
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break; |
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case FileStatus.Created: |
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if (status == FileStatus.Modified) |
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return oldStatus; |
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break; |
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case FileStatus.Modified: |
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case FileStatus.Renamed: |
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if (status == FileStatus.Created) |
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return oldStatus; |
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break; |
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case FileStatus.Deleted: |
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return oldStatus; |
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} |
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StatusKeeper.SetFileStatus(path, status); |
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return status; |
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} |
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|
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public void ClearFileStatus(string path) |
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{ |
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if (String.IsNullOrWhiteSpace(path)) |
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throw new ArgumentNullException("path", "The path parameter must not be emtpy"); |
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|
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StatusKeeper.ClearFileStatus(path.ToLower()); |
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} |
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|
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|
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public Task<FileStream> OpenStreamWithWaiting(string path) |
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{ |
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if (String.IsNullOrWhiteSpace(path)) |
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throw new ArgumentNullException("path","The path parameter must not be emtpy"); |
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|
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if (!File.Exists(path)) |
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throw new FileNotFoundException("The specified file or path does not exist", path); |
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|
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return new Task<FileStream>(() => |
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{ |
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int counter = 0; |
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while (true) |
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{ |
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try |
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{ |
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var stream=File.OpenRead(path); |
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return stream; |
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} |
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catch |
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{ |
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Thread.Sleep(500); |
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if (++counter > 10) |
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throw; |
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} |
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} |
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}); |
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} |
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} |
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} |