快速打造一个MINI自动发布系统

前情提要：因为项目特点，需要在自己的服务器上集成测试，而不是用github的DevOpt体系；再有就是服务器是windows的；项目仓库在github上；并且项目是asp.net core的项目；开发人员一枚。以前的做法就是发布后，把执行码复制在服务器上启动；后来就是在服务器写了个bat，运行bat，完成clone项目，发布项目，运行项项目；再后台就是写了个web服务，让github项目感知到推送后，通知web服务，web服务执行这个bat。

在这里面，有几个要素：

bat：完成代码clone，发布，运行（其实真实中还要完成对运行的项目进行关闭，清理等工作，以方便展开最新一次的clone，发布，运行）
web服务
github通知配置

先看bat，命令如下，就是关闭运行中的项目，清理目录，clone项目，进入项目目录，发布项目，然后运行项目

taskkill /f /im 项目名称.exe
timeout 1 >NUL
@RD /S /Q "C:\项目名称\项目目录"
cd  C:\项目名称
git clone https://用户名:密码@github.com/用户名/项目名称.git
cd  C:\项目名称\项目目录
dotnet publish -o C:\项目名称\pub
timeout 1>NUL
cd C:\项目名称\pub
项目名称.exe

再看一下web服务，就是等待github通知，收到通知后，获取key参数，然后验证这个调用通知是否有效（最好和https），再调用bat

appsettings.json

projects的配置目的是实现一个web服务，可以接收多个项目的通知，然后针对不对的项目进行发布和运行，当github通知的时间，会在参数key中告诉web服务要执行那个project，这里与web服务的key参数结合使用。

{"urls": "http://*:6789","Logging": {"LogLevel": {"Default": "Information","Microsoft": "Warning","Microsoft.Hosting.Lifetime": "Information"}},"AllowedHosts": "*","Projects": [{"key": "memall","BATPath": "C://MeMall/MeMall_Start.bat","Secret": "e0f0d18348fbcb090fa17f9fbc638a8be56be3ab"}]
}

homecontrolloer.cs文件

其中IsGitHubSignatureSHA1和 IsGitHubSignatureSHA256是两种验证方式，可以选其中的一种进行验证就可以，验证成功才能执行bat，这里同时用两种验证方式，只是为了演示而以。

using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Primitives;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;namespace GitHubNotice.Controllers
{[ApiController][Route("[controller]")]public class HomeController : ControllerBase{private readonly IEnumerable<Project> _projects;private readonly ILogger<HomeController> _logger;public HomeController(ILogger<HomeController> logger, IConfiguration configuration){_projects = configuration.GetSection("Projects").Get<List<Project>>();_logger = logger;}[HttpPost("/")]public async Task<IActionResult> Notice(){_logger.LogInformation($"应用收到github Notice");     Request.Headers.TryGetValue("X-GitHub-Delivery", out StringValues gitHubDeliveryId);Request.Headers.TryGetValue("X-GitHub-Event", out StringValues gitHubEvent);_logger.LogInformation($"收到github通知事务：X-GitHub-Delivery：{gitHubDeliveryId}，X-GitHub-Event：{gitHubEvent}");Request.Headers.TryGetValue("X-Hub-Signature", out StringValues gitHubSignature);Request.Headers.TryGetValue("X-Hub-Signature-256", out StringValues gitHubSignature256);var reader = new StreamReader(Request.Body, Encoding.UTF8);var bodyContent = await reader.ReadToEndAsync();var key = GetMark(bodyContent);var rgx = new Regex(@"^[a-zA-Z]+$");if (!string.IsNullOrWhiteSpace(key) && !rgx.IsMatch(key)){_logger.LogError($"key={key} 错误");return BadRequest();}else{var project = _projects.SingleOrDefault(s => s.Key == key);if (project != null){var resultSHA256 = IsGitHubSignatureSHA256(project.Secret, bodyContent, gitHubSignature256);var resultSHA1 = IsGitHubSignatureSHA1(project.Secret, bodyContent, gitHubSignature);_logger.LogInformation($"SHA1={resultSHA1},SHA256={resultSHA256}");if (resultSHA1 && resultSHA256){var p = new Process();p.StartInfo.CreateNoWindow = true;p.StartInfo.UseShellExecute = true;p.StartInfo.FileName = project.BATPath;p.Start();p.Close();_logger.LogInformation($"github通知成功");return Ok();}else{_logger.LogError("认证错误");return Unauthorized();}}else{_logger.LogError($"检查配置文件Projects是否与github中的Payload URL相匹配");return BadRequest();}}}/// <summary>/// 获取匹配项目的key/// </summary>/// <param name="text"></param>/// <returns></returns>string GetMark(string text){var arry = text.Split('&');foreach (var item in arry){if (item.Contains("key=")){return item.Split('=')[1];}}return "";}/// <summary>/// sha1/// </summary>/// <param name="seckey"></param>/// <param name="bodyContent"></param>/// <param name="signatureSHA1"></param>/// <returns></returns>static bool IsGitHubSignatureSHA1(string seckey, string bodyContent, string signatureSHA1){if (string.IsNullOrWhiteSpace(bodyContent))throw new ArgumentNullException(nameof(bodyContent));if (string.IsNullOrWhiteSpace(signatureSHA1))throw new ArgumentNullException(nameof(signatureSHA1));var signature = signatureSHA1.Replace("sha1=", "");var secret = Encoding.ASCII.GetBytes(seckey);var payloadBytes = Encoding.ASCII.GetBytes(bodyContent);using (var hmacsha1 = new HMACSHA1(secret)){var hash = hmacsha1.ComputeHash(payloadBytes);var hashString = ToHexString(hash);if (hashString.Equals(signature))return true;}return false;static string ToHexString(byte[] bytes){var builder = new StringBuilder(bytes.Length * 2);foreach (byte b in bytes){builder.AppendFormat("{0:x2}", b);}return builder.ToString();}}/// <summary>/// X-Hub-Signature-256/// </summary>/// <param name="secret"></param>/// <param name="bodyContent"></param>/// <param name="signatureSHA256"></param>/// <returns></returns>static bool IsGitHubSignatureSHA256(string secret, string bodyContent, string signatureSHA256){if (string.IsNullOrWhiteSpace(bodyContent))throw new ArgumentNullException(nameof(bodyContent));if (string.IsNullOrWhiteSpace(signatureSHA256))throw new ArgumentNullException(nameof(signatureSHA256));var secretBytes = Encoding.UTF8.GetBytes(secret);var hasher = new HMACSHA256(secretBytes);var data = Encoding.UTF8.GetBytes(bodyContent);var computedSignature = BitConverter.ToString(hasher.ComputeHash(data)).Replace("-", "").ToLower();return computedSignature == signatureSHA256.Replace("sha256=", "");}}/// <summary>/// 项目实体/// </summary>public class Project{public string Key { get; set; }public string BATPath { get; set; }public string Secret { get; set; }}
}

最后就是github的Webhooks，通过配置，当有人推送代码时，会通知web服务，方便进行拉取构建。