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Code Issues Releases Wiki Activity

Merge pull request #107 from NzbDrone/hash-cache-break

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Hash cache break
This commit is contained in:
Keivan Beigi 2014-09-01 11:30:32 -07:00
commit 52da4e4423
18 changed files with 139 additions and 70 deletions
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4
src/NzbDrone.Api/Extensions/Pipelines/GZipPipeline.cs
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@ -26,7 +26,9 @@ namespace NzbDrone.Api.Extensions.Pipelines
{
try
{
if (!response.ContentType.Contains("image")
if (
!response.ContentType.Contains("image")
&& !response.ContentType.Contains("font")
&& request.Headers.AcceptEncoding.Any(x => x.Contains("gzip"))
&& (!response.Headers.ContainsKey("Content-Encoding") || response.Headers["Content-Encoding"] != "gzip"))
{

2
src/NzbDrone.Api/Frontend/CacheableSpecification.cs
View File

@ -19,7 +19,7 @@ namespace NzbDrone.Api.Frontend
return false;
}
if (context.Request.Query.v == BuildInfo.Version) return true;
if (((DynamicDictionary)context.Request.Query).ContainsKey("h")) return true;
if (context.Request.Path.StartsWith("/api", StringComparison.CurrentCultureIgnoreCase))
{

2
src/NzbDrone.Api/Frontend/Mappers/BackupFileMapper.cs
View File

@ -16,7 +16,7 @@ namespace NzbDrone.Api.Frontend.Mappers
_appFolderInfo = appFolderInfo;
}
protected override string Map(string resourceUrl)
public override string Map(string resourceUrl)
{
var path = resourceUrl.Replace("/backup/", "").Replace('/', Path.DirectorySeparatorChar);

43
src/NzbDrone.Api/Frontend/Mappers/CacheBreakerProvider.cs Normal file
View File

@ -0,0 +1,43 @@
using System.Collections.Generic;
using System.Linq;
using NzbDrone.Common.Crypto;
using NzbDrone.Common.Extensions;
namespace NzbDrone.Api.Frontend.Mappers
{
public interface ICacheBreakerProvider
{
string AddCacheBreakerToPath(string resourceUrl);
}
public class CacheBreakerProvider : ICacheBreakerProvider
{
private readonly IEnumerable<IMapHttpRequestsToDisk> _diskMappers;
private readonly IHashProvider _hashProvider;
public CacheBreakerProvider(IEnumerable<IMapHttpRequestsToDisk> diskMappers, IHashProvider hashProvider)
{
_diskMappers = diskMappers;
_hashProvider = hashProvider;
}
public string AddCacheBreakerToPath(string resourceUrl)
{
if (!ShouldBreakCache(resourceUrl))
{
return resourceUrl;
}
var mapper = _diskMappers.Single(m => m.CanHandle(resourceUrl));
var pathToFile = mapper.Map(resourceUrl);
var hash = _hashProvider.ComputeMd5(pathToFile).ToBase64();
return resourceUrl + "?h=" + hash;
}
private static bool ShouldBreakCache(string path)
{
return !path.EndsWith(".ics") && !path.EndsWith("main");
}
}
}

2
src/NzbDrone.Api/Frontend/Mappers/FaviconMapper.cs
View File

@ -15,7 +15,7 @@ namespace NzbDrone.Api.Frontend.Mappers
_appFolderInfo = appFolderInfo;
}
protected override string Map(string resourceUrl)
public override string Map(string resourceUrl)
{
var path = Path.Combine("Content", "Images", "favicon.ico");

1
src/NzbDrone.Api/Frontend/Mappers/IMapHttpRequestsToDisk.cs
View File

@ -5,6 +5,7 @@ namespace NzbDrone.Api.Frontend.Mappers
{
public interface IMapHttpRequestsToDisk
{
string Map(string resourceUrl);
bool CanHandle(string resourceUrl);
Response GetResponse(string resourceUrl);
}

38
src/NzbDrone.Api/Frontend/Mappers/IndexHtmlMapper.cs
View File

@ -1,5 +1,6 @@
using System;
using System.IO;
using System.Runtime.InteropServices;
using System.Text.RegularExpressions;
using Nancy;
using NLog;
@ -12,26 +13,31 @@ namespace NzbDrone.Api.Frontend.Mappers
public class IndexHtmlMapper : StaticResourceMapperBase
{
private readonly IDiskProvider _diskProvider;
private readonly Func<ICacheBreakerProvider> _cacheBreakProviderFactory;
private readonly string _indexPath;
private static readonly Regex ReplaceRegex = new Regex("(?<=(?:href|src|data-main)=\").*?(?=\")", RegexOptions.Compiled | RegexOptions.IgnoreCase);
private static String API_KEY;
private static String URL_BASE;
private string _generatedContent
;
public IndexHtmlMapper(IAppFolderInfo appFolderInfo,
IDiskProvider diskProvider,
IConfigFileProvider configFileProvider,
Func<ICacheBreakerProvider> cacheBreakProviderFactory,
Logger logger)
: base(diskProvider, logger)
{
_diskProvider = diskProvider;
_cacheBreakProviderFactory = cacheBreakProviderFactory;
_indexPath = Path.Combine(appFolderInfo.StartUpFolder, "UI", "index.html");
API_KEY = configFileProvider.ApiKey;
URL_BASE = configFileProvider.UrlBase;
}
protected override string Map(string resourceUrl)
public override string Map(string resourceUrl)
{
return _indexPath;
}
@ -51,22 +57,34 @@ namespace NzbDrone.Api.Frontend.Mappers
protected override Stream GetContentStream(string filePath)
{
return StringToStream(GetIndexText());
var text = GetIndexText();
var stream = new MemoryStream();
var writer = new StreamWriter(stream);
writer.Write(text);
writer.Flush();
stream.Position = 0;
return stream;
}
private string GetIndexText()
{
var text = _diskProvider.ReadAllText(_indexPath);
if (RuntimeInfoBase.IsProduction && _generatedContent != null)
{
return _generatedContent;
}
text = ReplaceRegex.Replace(text, match => URL_BASE + match.Value);
_generatedContent = _diskProvider.ReadAllText(_indexPath);
text = text.Replace(".css", ".css?v=" + BuildInfo.Version);
text = text.Replace(".js", ".js?v=" + BuildInfo.Version);
text = text.Replace("API_ROOT", URL_BASE + "/api");
text = text.Replace("API_KEY", API_KEY);
text = text.Replace("APP_VERSION", BuildInfo.Version.ToString());
var cacheBreakProvider = _cacheBreakProviderFactory();
return text;
_generatedContent = ReplaceRegex.Replace(_generatedContent, match => cacheBreakProvider.AddCacheBreakerToPath(URL_BASE + match.Value));
_generatedContent = _generatedContent.Replace("API_ROOT", URL_BASE + "/api");
_generatedContent = _generatedContent.Replace("API_KEY", API_KEY);
_generatedContent = _generatedContent.Replace("APP_VERSION", BuildInfo.Version.ToString());
return _generatedContent;
}
}
}

2
src/NzbDrone.Api/Frontend/Mappers/LogFileMapper.cs
View File

@ -16,7 +16,7 @@ namespace NzbDrone.Api.Frontend.Mappers
_appFolderInfo = appFolderInfo;
}
protected override string Map(string resourceUrl)
public override string Map(string resourceUrl)
{
var path = resourceUrl.Replace('/', Path.DirectorySeparatorChar);
path = Path.GetFileName(path);

2
src/NzbDrone.Api/Frontend/Mappers/MediaCoverMapper.cs
View File

@ -16,7 +16,7 @@ namespace NzbDrone.Api.Frontend.Mappers
_appFolderInfo = appFolderInfo;
}
protected override string Map(string resourceUrl)
public override string Map(string resourceUrl)
{
var path = resourceUrl.Replace('/', Path.DirectorySeparatorChar);
path = path.Trim(Path.DirectorySeparatorChar);

2
src/NzbDrone.Api/Frontend/Mappers/StaticResourceMapper.cs
View File

@ -15,7 +15,7 @@ namespace NzbDrone.Api.Frontend.Mappers
_appFolderInfo = appFolderInfo;
}
protected override string Map(string resourceUrl)
public override string Map(string resourceUrl)
{
var path = resourceUrl.Replace('/', Path.DirectorySeparatorChar);
path = path.Trim(Path.DirectorySeparatorChar);

11
src/NzbDrone.Api/Frontend/Mappers/StaticResourceMapperBase.cs
View File

@ -27,7 +27,7 @@ namespace NzbDrone.Api.Frontend.Mappers
}
}
protected abstract string Map(string resourceUrl);
public abstract string Map(string resourceUrl);
public abstract bool CanHandle(string resourceUrl);
@ -51,14 +51,5 @@ namespace NzbDrone.Api.Frontend.Mappers
return File.OpenRead(filePath);
}
protected static Stream StringToStream(string text)
{
var stream = new MemoryStream();
var writer = new StreamWriter(stream);
writer.Write(text);
writer.Flush();
stream.Position = 0;
return stream;
}
}
}

2
src/NzbDrone.Api/Frontend/Mappers/UpdateLogFileMapper.cs
View File

@ -16,7 +16,7 @@ namespace NzbDrone.Api.Frontend.Mappers
_appFolderInfo = appFolderInfo;
}
protected override string Map(string resourceUrl)
public override string Map(string resourceUrl)
{
var path = resourceUrl.Replace('/', Path.DirectorySeparatorChar);
path = Path.GetFileName(path);

1
src/NzbDrone.Api/NzbDrone.Api.csproj
View File

@ -139,6 +139,7 @@
<Compile Include="Extensions\RequestExtensions.cs" />
<Compile Include="Frontend\CacheableSpecification.cs" />
<Compile Include="Frontend\Mappers\BackupFileMapper.cs" />
<Compile Include="Frontend\Mappers\CacheBreakerProvider.cs" />
<Compile Include="Frontend\Mappers\FaviconMapper.cs" />
<Compile Include="Frontend\Mappers\IMapHttpRequestsToDisk.cs" />
<Compile Include="Frontend\Mappers\IndexHtmlMapper.cs" />

31
src/NzbDrone.Common/Crypto/HashProvider.cs Normal file
View File

@ -0,0 +1,31 @@
using System.Security.Cryptography;
using NzbDrone.Common.Disk;
namespace NzbDrone.Common.Crypto
{
public interface IHashProvider
{
byte[] ComputeMd5(string path);
}
public class HashProvider : IHashProvider
{
private readonly IDiskProvider _diskProvider;
public HashProvider(IDiskProvider diskProvider)
{
_diskProvider = diskProvider;
}
public byte[] ComputeMd5(string path)
{
using (var md5 = MD5.Create())
{
using (var stream = _diskProvider.StreamFile(path))
{
return md5.ComputeHash(stream);
}
}
}
}
}

17
src/NzbDrone.Common/Extensions/Base64Extentions.cs Normal file
View File

@ -0,0 +1,17 @@
using System;
namespace NzbDrone.Common.Extensions
{
public static class Base64Extentions
{
public static string ToBase64(this byte[] bytes)
{
return Convert.ToBase64String(bytes);
}
public static string ToBase64(this long input)
{
return BitConverter.GetBytes(input).ToBase64();
}
}
}

37
src/NzbDrone.Common/HashUtil.cs
View File

@ -1,16 +1,10 @@
using System;
using System.Text;
using System.Threading;
namespace NzbDrone.Common
{
public static class HashUtil
{
//This should never be changed. very bad things will happen!
private static readonly DateTime Epoch = new DateTime(2010, 1, 1);
private static readonly object _lock = new object();
public static string CalculateCrc(string input)
{
uint mCrc = 0xffffffff;
@ -32,36 +26,5 @@ namespace NzbDrone.Common
}
return String.Format("{0:x8}", mCrc);
}
public static string GenerateCommandId()
{
return GenerateId("c");
}
private static string GenerateId(string prefix)
{
lock (_lock)
{
Thread.Sleep(1);
var tick = (DateTime.Now - Epoch).Ticks;
return prefix + "." + ToBase(tick);
}
}
private static string ToBase(long input)
{
const string BASE_CHARS = "0123456789abcdefghijklmnopqrstuvwxyz";
int targetBase = BASE_CHARS.Length;
var result = new StringBuilder();
do
{
result.Append(BASE_CHARS[(int)(input % targetBase)]);
input /= targetBase;
} while (input > 0);
return result.ToString();
}
}
}

2
src/NzbDrone.Common/NzbDrone.Common.csproj
View File

@ -73,6 +73,7 @@
<Compile Include="Composition\IContainer.cs" />
<Compile Include="ConsoleService.cs" />
<Compile Include="ConvertBase32.cs" />
<Compile Include="Crypto\HashProvider.cs" />
<Compile Include="DictionaryExtensions.cs" />
<Compile Include="Disk\DiskProviderBase.cs" />
<Compile Include="Disk\IDiskProvider.cs" />
@ -110,6 +111,7 @@
<Compile Include="Expansive\Tree.cs" />
<Compile Include="Expansive\TreeNode.cs" />
<Compile Include="Expansive\TreeNodeList.cs" />
<Compile Include="Extensions\Base64Extentions.cs" />
<Compile Include="Extensions\StreamExtensions.cs" />
<Compile Include="HashUtil.cs" />
<Compile Include="Http\HttpProvider.cs" />

10
src/UI/index.html
View File

@ -23,11 +23,11 @@
<link href="/Content/update.css" rel='stylesheet' type='text/css'/>
<link href="/Content/overrides.css" rel='stylesheet' type='text/css'/>
<link rel="apple-touch-icon" href="/Content/Images/touch/57.png?v=2"/>
<link rel="apple-touch-icon" sizes="72x72" href="/Content/Images/touch/72.png?v=2"/>
<link rel="apple-touch-icon" sizes="114x114" href="/Content/Images/touch/114.png?v=2"/>
<link rel="apple-touch-icon" sizes="144x144" href="/Content/Images/touch/144.png?v=2"/>
<link rel="icon" type="image/ico" href="/Content/Images/favicon.ico?v=2"/>
<link rel="apple-touch-icon" href="/Content/Images/touch/57.png"/>
<link rel="apple-touch-icon" sizes="72x72" href="/Content/Images/touch/72.png"/>
<link rel="apple-touch-icon" sizes="114x114" href="/Content/Images/touch/114.png"/>
<link rel="apple-touch-icon" sizes="144x144" href="/Content/Images/touch/144.png"/>
<link rel="icon" type="image/ico" href="/Content/Images/favicon.ico"/>
<link rel="alternate" type="text/calendar" title="iCalendar feed for NzbDrone" href="/feed/calendar/NzbDrone.ics" />
</head>