Files
runner/src/Runner.Worker/Handlers/CompositeActionHandler.cs
2020-06-15 11:10:36 -04:00

400 lines
18 KiB
C#

using System.IO;
using System.Text;
using System.Threading.Tasks;
using GitHub.Runner.Common;
using GitHub.Runner.Sdk;
using GitHub.DistributedTask.WebApi;
using Pipelines = GitHub.DistributedTask.Pipelines;
using System;
using System.Linq;
using GitHub.DistributedTask.ObjectTemplating.Tokens;
using System.Collections.Generic;
using GitHub.DistributedTask.Pipelines.ContextData;
namespace GitHub.Runner.Worker.Handlers
{
[ServiceLocator(Default = typeof(CompositeActionHandler))]
public interface ICompositeActionHandler : IHandler
{
CompositeActionExecutionData Data { get; set; }
}
// TODO: IMPLEMENT LOGIC FOR HANDLER CODE
public sealed class CompositeActionHandler : Handler, ICompositeActionHandler
{
public CompositeActionExecutionData Data { get; set; }
// TODO: Implement PrintActionDetails()
public override void PrintActionDetails(ActionRunStage stage)
{
// Just keep as same as ScriptHandler.cs for now
var target = Data.Steps;
var runStepInputs = target[0].Inputs;
var templateEvaluator = ExecutionContext.ToPipelineTemplateEvaluator();
var inputs = templateEvaluator.EvaluateStepInputs(runStepInputs, ExecutionContext.ExpressionValues, ExecutionContext.ExpressionFunctions);
var taskManager = HostContext.GetService<IActionManager>();
var userInputs = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
var runValue = "";
foreach (KeyValuePair<string, string> input in inputs)
{
userInputs.Add(input.Key);
userInputs.Add(input.Value);
if (input.Key.Equals("run"))
{
runValue = input.Value;
}
}
var contents = runValue ?? string.Empty;
if (Action.Type == Pipelines.ActionSourceType.Repository)
{
var firstLine = contents.TrimStart(' ', '\t', '\r', '\n');
var firstNewLine = firstLine.IndexOfAny(new[] { '\r', '\n' });
if (firstNewLine >= 0)
{
firstLine = firstLine.Substring(0, firstNewLine);
}
ExecutionContext.Output($"##[group]Run {firstLine}");
}
else
{
throw new InvalidOperationException($"Invalid action type {Action.Type} for {nameof(ScriptHandler)}");
}
var multiLines = contents.Replace("\r\n", "\n").TrimEnd('\n').Split('\n');
foreach (var line in multiLines)
{
// Bright Cyan color
ExecutionContext.Output($"\x1b[36;1m{line}\x1b[0m");
}
string argFormat;
string shellCommand;
string shellCommandPath = null;
bool validateShellOnHost = !(StepHost is ContainerStepHost);
string prependPath = string.Join(Path.PathSeparator.ToString(), ExecutionContext.PrependPath.Reverse<string>());
string shell = null;
if (!Inputs.TryGetValue("shell", out shell) || string.IsNullOrEmpty(shell))
{
// TODO: figure out how defaults interact with template later
// for now, we won't check job.defaults if we are inside a template.
if (string.IsNullOrEmpty(ExecutionContext.ScopeName) && ExecutionContext.JobDefaults.TryGetValue("run", out var runDefaults))
{
runDefaults.TryGetValue("shell", out shell);
}
}
if (string.IsNullOrEmpty(shell))
{
#if OS_WINDOWS
shellCommand = "pwsh";
if (validateShellOnHost)
{
shellCommandPath = WhichUtil.Which(shellCommand, require: false, Trace, prependPath);
if (string.IsNullOrEmpty(shellCommandPath))
{
shellCommand = "powershell";
Trace.Info($"Defaulting to {shellCommand}");
shellCommandPath = WhichUtil.Which(shellCommand, require: true, Trace, prependPath);
}
}
#else
shellCommand = "sh";
if (validateShellOnHost)
{
shellCommandPath = WhichUtil.Which("bash", false, Trace, prependPath) ?? WhichUtil.Which("sh", true, Trace, prependPath);
}
#endif
argFormat = ScriptHandlerHelpers.GetScriptArgumentsFormat(shellCommand);
}
else
{
var parsed = ScriptHandlerHelpers.ParseShellOptionString(shell);
shellCommand = parsed.shellCommand;
if (validateShellOnHost)
{
shellCommandPath = WhichUtil.Which(parsed.shellCommand, true, Trace, prependPath);
}
argFormat = $"{parsed.shellArgs}".TrimStart();
if (string.IsNullOrEmpty(argFormat))
{
argFormat = ScriptHandlerHelpers.GetScriptArgumentsFormat(shellCommand);
}
}
if (!string.IsNullOrEmpty(shellCommandPath))
{
ExecutionContext.Output($"shell: {shellCommandPath} {argFormat}");
}
else
{
ExecutionContext.Output($"shell: {shellCommand} {argFormat}");
}
if (this.Environment?.Count > 0)
{
ExecutionContext.Output("env:");
foreach (var env in this.Environment)
{
ExecutionContext.Output($" {env.Key}: {env.Value}");
}
}
ExecutionContext.Output("##[endgroup]");
}
public async Task RunAsync(ActionRunStage stage)
{
// DELETE LATER
// await Task.Yield();
// Basically, the only difference from ScriptHandler.cs is that "contents" is not just each step under "run: "
// It might make more sense to:
// 1) Abstract the core functionality of the ScriptHandler.cs that we need for BOTH CompositeActionHandler.cs and ScriptHandler.cs
// 2) Call those functions in both handlers
// * There is already a file called ScriptHandlerHelpers.cs that might be a good location to add more functions.
// Copied from ScriptHandler.cs
// Validate args.
Trace.Entering();
ArgUtil.NotNull(ExecutionContext, nameof(ExecutionContext));
ArgUtil.NotNull(Inputs, nameof(Inputs));
var githubContext = ExecutionContext.ExpressionValues["github"] as GitHubContext;
ArgUtil.NotNull(githubContext, nameof(githubContext));
var tempDirectory = HostContext.GetDirectory(WellKnownDirectory.Temp);
// Resolve steps
var target = Data.Steps;
if (target == null) {
Trace.Error("Data.Steps in CompositeActionHandler is null");
} else {
Trace.Info($"Data Steps Value for Composite Actions is: {target}.");
}
// For now, just assume it is 1 Run step
// We will adapt this in the future.
// Copied from ActionRunner.cs RunAsync() function => Maybe we don't need a handler and need to avoid this preplicatoin in the future?
var runStepInputs = target[0].Inputs;
if (runStepInputs == null) {
Trace.Error("runStepInputs in CompositeActionHandler is null");
} else {
Trace.Info($"runStepInputs Value for Composite Actions is: {runStepInputs}.");
}
var templateEvaluator = ExecutionContext.ToPipelineTemplateEvaluator();
var inputs = templateEvaluator.EvaluateStepInputs(runStepInputs, ExecutionContext.ExpressionValues, ExecutionContext.ExpressionFunctions);
var taskManager = HostContext.GetService<IActionManager>();
var userInputs = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
var runValue = "";
foreach (KeyValuePair<string, string> input in inputs)
{
userInputs.Add(input.Key);
userInputs.Add(input.Value);
Trace.Info($"Composite Action Handler. Key: {input.Key} Value: {input.Value}");
// Why is the key should not be "run" => because the "run" keyword is recorgnized as something that will be a "script"?
// Or should we create another key that delineates between "script" and "run"?
// ^ Perhaps we can explore this in the next version with the changes the to action.yaml template
if (input.Key.Equals("script"))
{
runValue = input.Value;
}
// string message = "";
// if (definition.Data?.Deprecated?.TryGetValue(input.Key, out message) == true)
// {
// ExecutionContext.Warning(String.Format("Input '{0}' has been deprecated with message: {1}", input.Key, message));
// }
// Get the run bash value that we want to run
// In the future, we would apply and validate the template => maybe using the manifest manager to recursively load the json schema.
}
Trace.Info($"Run Value for Composite Actions is: {runValue}.");
// Let's think about validating inputs later
// Validate inputs only for actions with action.yml
// var unexpectedInputs = new List<string>();
// foreach (var input in userInputs)
// {
// if (!validInputs.Contains(input))
// {
// unexpectedInputs.Add(input);
// }
// }
// if (unexpectedInputs.Count > 0)
// {
// ExecutionContext.Warning($"Unexpected input(s) '{string.Join("', '", unexpectedInputs)}', valid inputs are ['{string.Join("', '", validInputs)}']");
// }
//TODO:
// 6/11/20 EOD thoughts
// => What functions do I need to use from ScriptHandlerHelpers.cs?
// Do I need to Reverse the string for prepending the path??
// ^ why or why not?
// How do I process the Inputs?
// => It's a TemplateToken
// How do I incorporate Async? we call the StepHost for Async when you call ExecuteAsync()
// Detect operating system for fileName + arguments
var contents = runValue ?? string.Empty;
string workingDirectory = null;
if (!Inputs.TryGetValue("workingDirectory", out workingDirectory))
{
// TODO: figure out how defaults interact with template later
// for now, we won't check job.defaults if we are inside a template.
if (string.IsNullOrEmpty(ExecutionContext.ScopeName) && ExecutionContext.JobDefaults.TryGetValue("run", out var runDefaults))
{
if (runDefaults.TryGetValue("working-directory", out workingDirectory))
{
ExecutionContext.Debug("Overwrite 'working-directory' base on job defaults.");
}
}
}
var workspaceDir = githubContext["workspace"] as StringContextData;
workingDirectory = Path.Combine(workspaceDir, workingDirectory ?? string.Empty);
string shell = null;
if (!Inputs.TryGetValue("shell", out shell) || string.IsNullOrEmpty(shell))
{
// TODO: figure out how defaults interact with template later
// for now, we won't check job.defaults if we are inside a template.
if (string.IsNullOrEmpty(ExecutionContext.ScopeName) && ExecutionContext.JobDefaults.TryGetValue("run", out var runDefaults))
{
if (runDefaults.TryGetValue("shell", out shell))
{
ExecutionContext.Debug("Overwrite 'shell' base on job defaults.");
}
}
}
var isContainerStepHost = StepHost is ContainerStepHost;
string prependPath = string.Join(Path.PathSeparator.ToString(), ExecutionContext.PrependPath.Reverse<string>());
string commandPath, argFormat, shellCommand;
if (string.IsNullOrEmpty(shell))
{
#if OS_WINDOWS
shellCommand = "pwsh";
commandPath = WhichUtil.Which(shellCommand, require: false, Trace, prependPath);
if (string.IsNullOrEmpty(commandPath))
{
shellCommand = "powershell";
Trace.Info($"Defaulting to {shellCommand}");
commandPath = WhichUtil.Which(shellCommand, require: true, Trace, prependPath);
}
ArgUtil.NotNullOrEmpty(commandPath, "Default Shell");
#else
shellCommand = "sh";
commandPath = WhichUtil.Which("bash", false, Trace, prependPath) ?? WhichUtil.Which("sh", true, Trace, prependPath);
#endif
argFormat = ScriptHandlerHelpers.GetScriptArgumentsFormat(shellCommand);
}
else
{
var parsed = ScriptHandlerHelpers.ParseShellOptionString(shell);
shellCommand = parsed.shellCommand;
// For non-ContainerStepHost, the command must be located on the host by Which
commandPath = WhichUtil.Which(parsed.shellCommand, !isContainerStepHost, Trace, prependPath);
argFormat = $"{parsed.shellArgs}".TrimStart();
if (string.IsNullOrEmpty(argFormat))
{
argFormat = ScriptHandlerHelpers.GetScriptArgumentsFormat(shellCommand);
}
}
// No arg format was given, shell must be a built-in
if (string.IsNullOrEmpty(argFormat) || !argFormat.Contains("{0}"))
{
throw new ArgumentException("Invalid shell option. Shell must be a valid built-in (bash, sh, cmd, powershell, pwsh) or a format string containing '{0}'");
}
// We do not not the full path until we know what shell is being used, so that we can determine the file extension
var scriptFilePath = Path.Combine(tempDirectory, $"{Guid.NewGuid()}{ScriptHandlerHelpers.GetScriptFileExtension(shellCommand)}");
var resolvedScriptPath = $"{StepHost.ResolvePathForStepHost(scriptFilePath).Replace("\"", "\\\"")}";
// Format arg string with script path
var arguments = string.Format(argFormat, resolvedScriptPath);
// Fix up and write the script
contents = ScriptHandlerHelpers.FixUpScriptContents(shellCommand, contents);
#if OS_WINDOWS
// Normalize Windows line endings
contents = contents.Replace("\r\n", "\n").Replace("\n", "\r\n");
var encoding = ExecutionContext.Variables.Retain_Default_Encoding && Console.InputEncoding.CodePage != 65001
? Console.InputEncoding
: new UTF8Encoding(false);
#else
// Don't add a BOM. It causes the script to fail on some operating systems (e.g. on Ubuntu 14).
var encoding = new UTF8Encoding(false);
#endif
// Script is written to local path (ie host) but executed relative to the StepHost, which may be a container
File.WriteAllText(scriptFilePath, contents, encoding);
// Prepend PATH
AddPrependPathToEnvironment();
// expose context to environment
foreach (var context in ExecutionContext.ExpressionValues)
{
if (context.Value is IEnvironmentContextData runtimeContext && runtimeContext != null)
{
foreach (var env in runtimeContext.GetRuntimeEnvironmentVariables())
{
Environment[env.Key] = env.Value;
}
}
}
// dump out the command
var fileName = isContainerStepHost ? shellCommand : commandPath;
#if OS_OSX
if (Environment.ContainsKey("DYLD_INSERT_LIBRARIES")) // We don't check `isContainerStepHost` because we don't support container on macOS
{
// launch `node macOSRunInvoker.js shell args` instead of `shell args` to avoid macOS SIP remove `DYLD_INSERT_LIBRARIES` when launch process
string node12 = Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Externals), "node12", "bin", $"node{IOUtil.ExeExtension}");
string macOSRunInvoker = Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Bin), "macos-run-invoker.js");
arguments = $"\"{macOSRunInvoker.Replace("\"", "\\\"")}\" \"{fileName.Replace("\"", "\\\"")}\" {arguments}";
fileName = node12;
}
#endif
ExecutionContext.Debug($"{fileName} {arguments}");
using (var stdoutManager = new OutputManager(ExecutionContext, ActionCommandManager))
using (var stderrManager = new OutputManager(ExecutionContext, ActionCommandManager))
{
StepHost.OutputDataReceived += stdoutManager.OnDataReceived;
StepHost.ErrorDataReceived += stderrManager.OnDataReceived;
// Execute
int exitCode = await StepHost.ExecuteAsync(workingDirectory: StepHost.ResolvePathForStepHost(workingDirectory),
fileName: fileName,
arguments: arguments,
environment: Environment,
requireExitCodeZero: false,
outputEncoding: null,
killProcessOnCancel: false,
inheritConsoleHandler: !ExecutionContext.Variables.Retain_Default_Encoding,
cancellationToken: ExecutionContext.CancellationToken);
// Error
if (exitCode != 0)
{
ExecutionContext.Error($"Process completed with exit code {exitCode}.");
ExecutionContext.Result = TaskResult.Failed;
}
}
}
}
}