forked from ravendb/ravendb
-
Notifications
You must be signed in to change notification settings - Fork 0
/
ReadOnlyFileBasedPersistentSource.cs
87 lines (72 loc) · 2.05 KB
/
ReadOnlyFileBasedPersistentSource.cs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
//-----------------------------------------------------------------------
// <copyright file="ReadOnlyFileBasedPersistentSource.cs" company="Hibernating Rhinos LTD">
// Copyright (c) Hibernating Rhinos LTD. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.IO;
namespace Raven.Munin
{
/// <summary>
/// Simple read only version of the file based data.
/// It is mostly meant for read only access from remote application domain.
/// </summary>
public class ReadOnlyFileBasedPersistentSource : AbstractPersistentSource
{
private readonly string basePath;
private readonly string prefix;
private readonly string logPath;
private Stream log;
public ReadOnlyFileBasedPersistentSource(string basePath, string prefix)
{
this.basePath = basePath;
this.prefix = prefix;
logPath = Path.Combine(basePath, prefix + ".ravendb");
OpenFiles();
}
private void OpenFiles()
{
log = CreateClonedStreamForReadOnlyPurposes();
}
#region IPersistentSource Members
protected override Stream CreateClonedStreamForReadOnlyPurposes()
{
return new FileStream(logPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite, 4096, FileOptions.SequentialScan);
}
protected override Stream Log
{
get { return log; }
}
public override void ReplaceAtomically(Stream newNewLog)
{
throw new NotSupportedException();
}
public override Stream CreateTemporaryStream()
{
throw new NotSupportedException();
}
public override void FlushLog()
{
throw new NotSupportedException();
}
public override RemoteManagedStorageState CreateRemoteAppDomainState()
{
return new RemoteManagedStorageState
{
Path = basePath,
Prefix = prefix
};
}
#endregion
public override void EnsureCapacity(int value)
{
// nothing to do here
}
public override void Dispose()
{
log.Dispose();
base.Dispose();
}
}
}