56 lines
1.9 KiB
C#
56 lines
1.9 KiB
C#
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using System.Diagnostics;
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namespace w4c_workflows.Services.Execution;
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/// <summary>
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/// Runs a language whose program is a single file executed by an interpreter
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/// (shell → sh, python → python3, javascript → node). Input is written to stdin
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/// as JSON; output follows the <see cref="ExecutionHelpers"/> stdout contract.
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/// </summary>
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public class SubprocessScriptExecutor : IScriptExecutor
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{
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private readonly string _language;
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private readonly string _executable;
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private readonly TimeSpan _timeout;
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public SubprocessScriptExecutor(string language, string executable, IConfiguration config)
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{
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_language = language;
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_executable = executable;
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_timeout = TimeSpan.FromSeconds(ParseInt(config["Workflows:TaskTimeoutSeconds"], 60));
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}
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public string Language => _language;
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public bool IsAvailable() => ProcessRunner.FindInPath(_executable) != null;
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public async Task<ExecutionResult> ExecuteAsync(TaskInvocation invocation, CancellationToken ct)
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{
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var sw = Stopwatch.StartNew();
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try
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{
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var workingDir = ExecutionHelpers.ResolveWorkingDir(invocation);
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var entryPath = Path.Combine(workingDir, invocation.EntryFile);
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var output = await ProcessRunner.RunAsync(
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_executable,
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new[] { entryPath },
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workingDir,
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ExecutionHelpers.BuildEnvironment(invocation),
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invocation.Input,
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_timeout,
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ct);
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return ExecutionHelpers.ToResult(output, sw.Elapsed);
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}
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catch (Exception ex)
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{
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sw.Stop();
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return new ExecutionResult(false, -1, string.Empty, string.Empty, null, ex.Message, sw.Elapsed);
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}
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}
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private static int ParseInt(string? text, int fallback)
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=> int.TryParse(text, out var value) && value > 0 ? value : fallback;
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}
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