目录
1 大概思路... 1
2 Nginx集群之WCF大文件上传及下载... 1
3 BasicHttpBinding相关配置解析... 2
4 编写WCF服务、客户端程序... 3
5 URL保留项... 8
7 Nginx集群配置搭建... 9
8 WCF客户端程序的运行结果... 11
9 总结... 13
l Nginx集群之WCF大文件上传及下载
l BasicHttpBinding相关配置解析
transferMode、messageEncoding、maxReceivedMessageSize、receiveTimeout、sendTimeout
l 编写WCF服务、客户端程序
l URL保留项
l 部署WCF服务程序到局域网内1台PC机
l Nginx集群配置搭建
l WCF客户端程序的运行结果
l 总结
Nginx的匹配规则,很容易帮助我们划分WCF服务的网段,从而实现企业数据信息系统多区域划分,如小数据的微服务、传输数据文件的服务、即时通信服务、或者邮件服务,相当于构建了一条企业内部信息化的数据总线(DataBus)。
以下是本文讲述的主要结构图:
客户端以BasicHttpBinding访问Nginx的域名zhyongfeng.com/fileupload,然后Nginx进行负载均衡,将消息分发到后端任意一台WCF上传下载服务器的PC机,然后进行上传文件至“冷数据”处,又从“冷数据”处下载文件。
针对“冷数据”可以划分目录,建立单独的FTP服务器及WCF服务器,进行操作处理。如下图所示:
以下是WCF上传下载服务器的架构:
basicHttpBinding相关配置,具体参考:
https://msdn.microsoft.com/zh-cn/library/system.servicemodel.basichttpbinding.aspx
以下是主要应用到的配置
transferMode
获取或设置一个值,该值指示是通过缓冲处理还是流处理来发送消息。(继承自 HttpBindingBase。)
messageEncoding
获取或设置是使用 MTOM 还是文本对 SOAP 消息进行编码。
maxReceivedMessageSize
获取或设置最大大小,以字节为单位,可以使用此绑定配置的通道上接收的消息。(继承自 HttpBindingBase。)
receiveTimeout
获取或设置连接在撤消之前保持非活动状态的最大时间间隔,在此时间间隔内未接收任何应用程序消息。(继承自 Binding。)
sendTimeout
获取或设置在传输引发异常之前可用于完成写入操作的时间间隔。(继承自 Binding。)
针对MTOM编码和异步调用的性能改善,可以参照论文:
《利用MTOM编码和异步调用改进流传输的性能.pdf》
l WCF服务程序
Program.cs
using System.ServiceModel; using Service; using System; namespace FileTransferHosting { class Program { static void Main(string[] args) { using (ServiceHost host = new ServiceHost(typeof(FileTransferOperation))) { host.Opened += delegate { Console.WriteLine(host.Description.Endpoints[0].Address.Uri + "已经启动,按任意键终止服务!"); }; host.Open(); Console.Read(); } } } }
FileTransferOperation.cs
using Service.Interface; using System; using System.IO; using System.ServiceModel; namespace Service { [ServiceBehavior(ConcurrencyMode = ConcurrencyMode.Multiple)] public class FileTransferOperation : IFileTransferOperation { /// <summary> /// 上传文件 /// </summary> /// <param name="remoteFile"></param> public void UploadLoad(RemoteFileInfo remoteFile) { StreamToFile(remoteFile); } /// <summary> /// 写文件 /// </summary> /// <param name="remoteFile"></param> public void StreamToFile(RemoteFileInfo remoteFile) { string fileFullPath = Path.Combine(System.Environment.CurrentDirectory, remoteFile.FileName); Stream sourceStream = remoteFile.FileByteStream; if (sourceStream == null) { return; } if (!sourceStream.CanRead) { return; } //创建文件流,读取流中的数据生成文件 using (FileStream fs = new FileStream(fileFullPath, FileMode.Create, FileAccess.Write, FileShare.None)) { const int bufferLength = 4096; byte[] myBuffer = new byte[bufferLength];//数据缓冲区 int count; while ((count = sourceStream.Read(myBuffer, 0, bufferLength)) > 0) { fs.Write(myBuffer, 0, count); } fs.Close(); sourceStream.Close(); } } /// <summary> /// 下载文件 /// </summary> /// <param name="fileName"></param> /// <returns></returns> public Stream DownLoad(string fileName) { string fileFullPath = Path.Combine(System.Environment.CurrentDirectory, fileName); if (!File.Exists(fileFullPath))//判断文件是否存在 { return null; } try { Stream myStream = File.OpenRead(fileFullPath); return myStream; } catch { return null; } } } }
服务端配置文件:
<?xml version="1.0" encoding="utf-8" ?> <configuration> <system.serviceModel> <behaviors> <serviceBehaviors> <behavior name="FileTransferBehavior"> <serviceMetadata httpGetEnabled="true" /> <serviceDebug includeExceptionDetailInFaults="true" /> </behavior> </serviceBehaviors> </behaviors> <bindings> <basicHttpBinding> <binding name="FileTransferdBinding" receiveTimeout="00:30:00" sendTimeout="00:30:00" maxReceivedMessageSize="6442450944" transferMode="Streamed" messageEncoding="Mtom" /> </basicHttpBinding> </bindings> <services> <service behaviorConfiguration="FileTransferBehavior" name="Service.FileTransferOperation"> <endpoint binding="basicHttpBinding" bindingConfiguration="FileTransferdBinding" contract="Service.Interface.IFileTransferOperation" /> <host> <baseAddresses> <add baseAddress="http://127.0.0.1:5600/fileupload" /> </baseAddresses> </host> </service> </services> </system.serviceModel> </configuration>
l 客户端程序
Program.cs
using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Text; using FileTransferClient.FileTransferService; namespace FileTransferClient { class Program { static void Main(string[] args) { Console.WriteLine("请输入文件完整路径:"); string fullFilePath = Console.ReadLine().Trim(); using (FileTransferOperationClient proxy=new FileTransferOperationClient()) { DateTime datetime1 = DateTime.Now; byte[] buffer = System.IO.File.ReadAllBytes(fullFilePath); Stream streamBuffer= new MemoryStream(buffer); //上传文件 proxy.UploadLoad(buffer.Length, System.IO.Path.GetFileName(fullFilePath), streamBuffer); OutPutDiffTime(DateTime.Now, datetime1, "上传成功"); Console.WriteLine("开始下载文件:"); DateTime datetime2 = DateTime.Now; string filename = System.IO.Path.GetFileName(fullFilePath); //下载文件 Stream sourceStream = proxy.DownLoad(filename); if (sourceStream == null) { return; } if (!sourceStream.CanRead) { return; } //创建文件流,读取流中的数据生成文件 using (FileStream fs = new FileStream(Path.Combine(System.Environment.CurrentDirectory, filename), FileMode.Create, FileAccess.Write, FileShare.None)) { const int bufferLength = 4096; //数据缓冲区 byte[] myBuffer = new byte[bufferLength]; int count; while ((count = sourceStream.Read(myBuffer, 0, bufferLength)) > 0) { fs.Write(myBuffer, 0, count); } fs.Close(); sourceStream.Close(); } OutPutDiffTime(DateTime.Now, datetime2, "下载成功"); Console.Read(); } } public static void OutPutDiffTime(DateTime datetime2,DateTime datetime1,string mesg) { TimeSpan ts = (datetime2 - datetime1); string dateDiff = ts.Hours.ToString() + "小时" + ts.Minutes.ToString() + "分钟" + ts.Seconds.ToString() + "秒"; Console.WriteLine(String.Format("花费了{0},{1}", dateDiff, mesg)); } } }
客户端配置文件(注意这里客户端transferMode=”Streamed”要采用流式数据进行处理,并且将endpoint address改为” http://zhyongfeng.com/fileupload”):
<?xml version="1.0" encoding="utf-8" ?> <configuration> <system.serviceModel> <bindings> <basicHttpBinding> <binding name="BasicHttpBinding_IFileTransferOperation" receiveTimeout="00:30:00" sendTimeout="00:30:00" maxReceivedMessageSize="6442450944" transferMode="Streamed" messageEncoding="Mtom" /> </basicHttpBinding> </bindings> <client> <endpoint address="http://zhyongfeng.com/fileupload" binding="basicHttpBinding" bindingConfiguration="BasicHttpBinding_IFileTransferOperation" contract="FileTransferService.IFileTransferOperation" name="BasicHttpBinding_IFileTransferOperation" /> </client> </system.serviceModel> </configuration>
如下图所示:
详见:http://www.cnblogs.com/yongfeng/p/7851039.html
远程部署WCF服务端程序到PC机
通过自主义域名zhyongfeng.com:80端口进行负载均衡集群访问,则访问C:\Windows\System32\drivers\etc\hosts,添加下列“本机IP 自定义的域名”:
10.93.85.66 zhyongfeng.com
使用Nginx匹配原则针对WCF部署的1台PC机配置如下:
worker_processes 1; events { worker_connections 1024; } http { include mime.types; default_type application/octet-stream; sendfile on; keepalive_timeout 65; upstream zhyongfeng.com { server 10.92.202.56:5600; server 10.92.202.57:5700; server 10.92.202.58:5800; } server { listen 80; server_name zhyongfeng.com; location / { proxy_pass http://zhyongfeng.com; proxy_connect_timeout 10s; } location /fileupload { proxy_pass http://10.92.202.56:5600/fileupload; proxy_connect_timeout 10s; } } }
运行CMD:
D:\DTLDownLoads\nginx-1.10.2>start nginx
D:\DTLDownLoads\nginx-1.10.2>nginx -s reload
访问WCF服务端:http://zhyongfeng.com/fileupload,运行结果:
启动WCF客户端程序,直接上传Linux的ubuntu系统iso镜像,总大小为1.5G左右,上传时间局域网(服务器线路是10Gpbs)花费7分钟左右,下载时间大概是3分钟。
客户端服务器的网络状况,运行效果如下图:
Nginx的匹配原则能够有效的分配URL,将流式数据分发给相应的服务处理,并且在局域网内能够支持较大的上传下载功能。通过BasicHttpBinding的相关配置,能够控制流式数据上传大小,同时支持流式数据的下载功能,达到WCF大文件上传及下载的效果。
当然,具体的应用场景,还是要结合数据大小而言论的,这里只是提供一个解决方案的参考。
例如一些处理视频文件每天都是1TB,处理PB级的大数据文件,还是建议使用hadoop的HDFS实现比较好。
另一方面,数据大小达若干MB或几KB的发票、报表文件,这些文件主要在多而不在大,hadoop的MapReduce显然有点大材小用了,可以采用“业务领域-年-月-日”的方式,建立自己一套数据结构存储方式。
源代码下载:
http://download.csdn.net/download/ruby_matlab/10131307
PDF下载:
Nginx集群之WCF大文件上传及下载(支持6G传输).pdf