我有在C#中创建的方法(如下所示),它通过C#console-app执行一些npm / newman命令。当前代码处理cmd是否挂起/失败,但是如果nmp / newman执行挂起或失败则不处理该情况。
你能帮忙吗?
public string Runner ()
{
var psiNpm = new ProcessStartInfo
{
FileName = "cmd",
RedirectStandardOutput = true,
RedirectStandardInput = true,
UseShellExecute = false
};
var pNpmRun = Process.Start(psiNpm);
pNpmRun.StandardInput.WriteLine("npm install -g newman");
pNpmRun.StandardInput.WriteLine("newman run " +
"\"C:\\Postman\\Test.postman.json\" " +
"--folder \"TestSearch\" " +
"--environment \"C:\\Postman\\postman_environment.json\" " +
"--disable-unicode");
pNpmRun.StandardInput.WriteLine("exit");
var tenMin = 10 * 60 * 1000;
if(pNpmRun.WaitForExit(tenMin)) {
return pNpmRun.StandardOutput.ReadToEnd();
} else {
pNpmRun.Kill();
throw new TimeoutException("Command didn't complete in 10 minute timeout");
}
}
您可以检查npm
和newman
命令的退出代码,并将它们返回给调用进程:
public string Runner ()
{
var psiNpm = new ProcessStartInfo
{
FileName = "cmd",
RedirectStandardOutput = true,
RedirectStandardInput = true,
UseShellExecute = false
};
var pNpmRun = Process.Start(psiNpm);
pNpmRun.StandardInput.WriteLine("npm install -g newman");
pNpmRun.StandardInput.WriteLine("if not "%ERRORLEVEL%" == "0" exit 1");
pNpmRun.StandardInput.WriteLine("newman run " +
"\"C:\\Postman\\Test.postman.json\" " +
"--folder \"TestSearch\" " +
"--environment \"C:\\Postman\\postman_environment.json\" " +
"--disable-unicode");
pNpmRun.StandardInput.WriteLine("if not "%ERRORLEVEL%" == "0" exit 2");
pNpmRun.StandardInput.WriteLine("exit 0");
var tenMin = 10 * 60 * 1000;
if(pNpmRun.WaitForExit(tenMin)) {
var exitCode = pNpmRun.ExitCode;
if(exitCode != 0) {
throw new Exception("Command failed " + exitCode);
}
return pNpmRun.StandardOutput.ReadToEnd();
} else {
pNpmRun.Kill();
throw new TimeoutException("Command didn't complete in 10 minute timeout");
}
}
在每个命令之后检查errorlevel
,它是一个“虚拟环境变量”,表示前一个命令的退出代码。如果它不是0(通常成功),那么它退出cmd
进程回到你的C#代码。您的C#代码检查进程的ExitCode
,如果它不成功(0),它会抛出包含ExitCode的异常,因此您知道这两个命令中的哪一个失败。这依赖于npm
和newman
进程在失败时返回非零退出代码。
那应该处理“失败”。处理“悬挂”将更加困难。没有任何方法可以知道这个过程是否会回归(阅读:停止问题(我在大学学到的一件事))。