前两篇博文中提到Development,QA,Staging,Production四个环境，也说明了源代码的分支和四个环境的对应关系，本篇博文聊一下，怎么把源码自动化发布到对应的环境中。
市面上主流的DevOpt工具都支持这些功能，github,gitlab，都有CICD功能，当然，如果源码服务器是自己搭建的，也可以利用像Jenkins这类软件来实现CICD，关于这些大众工具，网上有很多教程序，这里就不主要来分享了，本例是用.net core实现一个极简的自动发布工具——《MyCICD》。
说一下实现思路吧！
- clone 或 pull分支代码
- publish
- run
是不是很简单，上代码吧
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
namespace MyCICD
{
class Program
{
static void Main(string[] args)
{
var processIDs = new int[0];
while (true)
{
if (Clone())
{
if (Publish(processIDs))
{
processIDs = Run();
}
}
Thread.Sleep(30000);
}
}
/// <summary>
/// git 克隆
/// </summary>
/// <returns></returns>
static bool Clone()
{
var gitLib = ConfigurationManager.AppSettings["GitLib"];
var sourcePath = ConfigurationManager.AppSettings["SourcePath"];
var sourceDir = $"{sourcePath.TrimEnd('/', '\\') }/{ Path.GetFileNameWithoutExtension(gitLib)} ";
//存在就拉取代码，不存在就克隆
if (Directory.Exists(sourceDir))
{
return Pull(sourceDir);
}
else
{
return Clone(gitLib, sourceDir);
}
}
/// <summary>
/// 克隆项目代码
/// </summary>
/// <param name="gitLib">git库</param>
/// <param name="sourceDir">本地保存路径</param>
/// <returns></returns>
static bool Clone(string gitLib, string sourceDir)
{
Console.WriteLine("开始Clone");
var processStartInfo = new ProcessStartInfo("git", $"clone {gitLib} {sourceDir}") { RedirectStandardOutput = true };
var process = Process.Start(processStartInfo);
if (process == null)
{
Console.WriteLine("请确认是否安装git");
return false;
}
else
{
using (var output = process.StandardOutput)
{
while (!output.EndOfStream)
{
Console.WriteLine(output.ReadLine());
}
if (!process.HasExited)
{
process.Kill();
}
}
Console.WriteLine($"执行时间 :{(process.ExitTime - process.StartTime).TotalMilliseconds} ms");
Console.WriteLine("结束Clone");
return process.ExitCode == 0;
}
}
/// <summary>
/// 拉取项目代码
/// </summary>
/// <param name="sourceDir">源码路径</param>
/// <returns></returns>
static bool Pull(string sourceDir)
{
Console.WriteLine("开始Fetch");
var processStartInfo = new ProcessStartInfo("git", $"pull origin")
{
RedirectStandardOutput = true,
WorkingDirectory = sourceDir,
};
var process = Process.Start(processStartInfo);
using (var output = process.StandardOutput)
{
var resultBuilder = new StringBuilder();
while (!output.EndOfStream)
{
resultBuilder.AppendLine(output.ReadLine());
}
Console.WriteLine(resultBuilder);
if (!process.HasExited)
{
process.Kill();
}
if (resultBuilder.ToString() != "Already up to date.\r\n")
{
Console.WriteLine("结束Fetch");
return true;
}
else
{
Console.WriteLine("结束Fetch，远程仓库没有更新");
return false;
}
}
}
#region 发布项目
/// <summary>
/// 发布项目
/// </summary>
/// <returns></returns>
static bool Publish(int[] processIDs)
{
Console.WriteLine("开始Publish");
var sourcePath = ConfigurationManager.AppSettings["SourcePath"];
var publishProject = ConfigurationManager.AppSettings["PublishProject"];
//找出要发布的项目
var projectPathLists = publishProject.Split(",");
var projects = GetProjectsPath(sourcePath, projectPathLists);
var publishDir = $"{sourcePath}/publish";
var result = true;//如果有一个项目失败，发布就会失败
//为了发布，关闭之前运行中的进程
foreach (var processid in processIDs)
{
Process.GetProcessById(processid).Kill();
}
//发布项目
foreach (var project in projects)
{
var processStartInfo = new ProcessStartInfo("dotnet", $"publish {project} -o {publishDir}/{Path.GetFileNameWithoutExtension(project)}") { RedirectStandardOutput = true };
var process = Process.Start(processStartInfo);
if (process == null)
{
Console.WriteLine("请确认是否安装dotnet sdk");
return false;
}
else
{
using (var output = process.StandardOutput)
{
while (!output.EndOfStream)
{
Console.WriteLine(output.ReadLine());
}
if (!process.HasExited)
{
process.Kill();
}
}
Console.WriteLine($"执行时间 :{(process.ExitTime - process.StartTime).TotalMilliseconds} ms");
if (process.ExitCode != 0)
{
Console.WriteLine($"{Path.GetFileNameWithoutExtension(project)}发布失败");
}
result = result || process.ExitCode == 0;
}
}
Console.WriteLine("结束Publish");
return result;
}
/// <summary>
/// 查找项目
/// </summary>
/// <param name="sourcePath">源码路径</param>
/// <param name="projects">项目集</param>
/// <returns></returns>
static string[] GetProjectsPath(string sourcePath, string[] projects)
{
var paths = new List<string>();
foreach (var file in Directory.GetFiles(sourcePath))
{
if (projects.Contains(Path.GetFileName(file)))
{
paths.Add(file);
}
}
foreach (var dir in Directory.GetDirectories(sourcePath))
{
paths.AddRange(GetProjectsPath(dir, projects));
}
return paths.ToArray();
}
#endregion
#region 运行项目
/// <summary>
/// 运行项目
/// </summary>
/// <returns></returns>
static int[] Run()
{
Console.WriteLine("开始运行");
var sourcePath = ConfigurationManager.AppSettings["SourcePath"];
var publishDir = $"{sourcePath}/publish";
var proceddIDs = new List<int>();
foreach (var projectPath in Directory.GetDirectories(publishDir))
{
var processStartInfo = new ProcessStartInfo("dotnet", $"{Path.GetFileNameWithoutExtension(projectPath)}.dll")
{
RedirectStandardOutput = true,
WorkingDirectory = projectPath,
};
var process = Process.Start(processStartInfo);
proceddIDs.Add(process.Id);
}
Console.WriteLine("结束运行");
return proceddIDs.ToArray();
}
#endregion
}
}
App.config配置文件
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<appSettings>
<!--git库相关：git库路径，clone后本地何存路径-->
<add key="GitLib" value="https://github.com/axzxs2001/Asp.NetCoreExperiment.git"/>
<add key="SourcePath" value="e:/test/"/>
<!--dotnet发布相关：要发布的项目-->
<add key="PublishProject" value="AspNetCoreEnvironment.csproj,WebError.csproj"/>
</appSettings>
</configuration>
这个例子很简单，只支持在windows下运行，同时run起来的应用和MyCICD是在一个进程中，一但进程关闭，run的服务也就掉了，还有很多需要改进，如果有兴趣，可以完善，比如可以跑大多个平台上（linux,docker,mac）下，也可以把MyCICD和运行的服务分离，进程间互不影响。
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