public async Task <string> Evaluate(string script)
{
_log.Detail("Executing Nodejs script...");
string program = ProcessInterop.AppendExecutableExtension("node");
string?programPath = ProcessInterop.ResolveProgramFullPath(program, _appSettings.NodeJsPath);
if (programPath == null)
{
_log.Warning("Script run failed. Program not found: {0}", program);
return($"{program} not found to execute");
}
string output = "";
try
{
using (var process = new Process())
{
process.StartInfo = new ProcessStartInfo
{
CreateNoWindow = true,
RedirectStandardInput = true,
RedirectStandardOutput = true,
UseShellExecute = false,
RedirectStandardError = true,
FileName = programPath,
Arguments = $"-e \"{EncodeForCmdLine(script)}\""
};
process.Start();
output = await process.StandardOutput.ReadToEndAsync();
process.WaitForExit(_appSettings.NodeJsTimeout * 1000);
}
return(output);
}
catch (Exception ex)
{
_log.Warning("Script run failed with Exception: {0}", ex.Message);
_log.Detail("Stack Trace: {0}", ex.StackTrace ?? "");
return($"Script run failed with Exception: {ex.Message}");
}
}
public string Generate(IArguments arguments)
{
var file = new FsPath(arguments.GetArgumentOrThrow <string>("file"));
_log.Info("Trying to execute {0}", file);
var nodeProgram = ProcessInterop.AppendExecutableExtension(processName);
string?programPath = ProcessInterop.ResolveProgramFullPath(nodeProgram);
if (programPath == null)
{
_log.Warning("{0} was not found on path.", processName);
return($"{processName} was not found on path");
}
StringBuilder script = new StringBuilder(16 * 1024);
script.AppendLine(SerializeHostInfo());
script.AppendLine(file.ReadFile(_log));
var temp = new FsPath(Path.GetTempFileName());
temp.WriteFile(_log, script.ToString());
var(exitcode, output) = ProcessInterop.RunProcess("node", temp.ToString(), ScriptTimeOut);
if (temp.IsExisting)
{
File.Delete(temp.ToString());
}
if (exitcode != 0)
{
_log.Warning("Script run failed. Exit code: {0}", exitcode);
_log.Detail("Script output: {0}", output);
return($"Script run failed: {temp}");
}
else
{
return(output);
}
}
protected string ExecuteScriptProcess(string programWithoutExtension, string searchPath, string fileToExecute, int timeout)
{
string program = ProcessInterop.AppendExecutableExtension(programWithoutExtension);
string?programPath = ProcessInterop.ResolveProgramFullPath(program, searchPath);
if (programPath == null)
{
_log.Warning("{0} was not found on path.", program);
return($"{program} was not found on path");
}
string?scriptPath = Path.GetDirectoryName(fileToExecute);
if (scriptPath != null)
{
SerializeHostInfo(scriptPath);
}
try
{
var(exitcode, output) = ProcessInterop.RunProcess(programPath, fileToExecute, timeout);
if (exitcode != 0)
{
_log.Warning("Script run failed. Exit code: {0}", exitcode);
_log.Detail("Script output: {0}", output);
return($"Script run failed: {fileToExecute}");
}
else
{
return(output);
}
}
catch (Exception ex)
{
_log.Warning("Script run failed with Exception: {0}", ex.Message);
_log.Detail("Stack Trace: {0}", ex.StackTrace ?? "");
return($"Script run failed with Exception: {ex.Message}");
}
}
