Files
runner/src/Runner.Worker/ActionManifestManager.cs
2020-04-13 21:46:30 -04:00

461 lines
18 KiB
C#

using System;
using System.Collections.Generic;
using System.IO;
using System.Threading;
using GitHub.Runner.Common;
using GitHub.Runner.Sdk;
using System.Reflection;
using GitHub.DistributedTask.Pipelines.ObjectTemplating;
using GitHub.DistributedTask.ObjectTemplating.Schema;
using GitHub.DistributedTask.ObjectTemplating;
using GitHub.DistributedTask.ObjectTemplating.Tokens;
using GitHub.DistributedTask.Pipelines.ContextData;
using YamlDotNet.Core;
using YamlDotNet.Core.Events;
using System.Globalization;
using System.Linq;
namespace GitHub.Runner.Worker
{
[ServiceLocator(Default = typeof(ActionManifestManager))]
public interface IActionManifestManager : IRunnerService
{
ActionDefinitionData Load(IExecutionContext executionContext, string manifestFile);
List<string> EvaluateContainerArguments(IExecutionContext executionContext, SequenceToken token, IDictionary<string, PipelineContextData> extraExpressionValues);
Dictionary<string, string> EvaluateContainerEnvironment(IExecutionContext executionContext, MappingToken token, IDictionary<string, PipelineContextData> extraExpressionValues);
string EvaluateDefaultInput(IExecutionContext executionContext, string inputName, TemplateToken token);
}
public sealed class ActionManifestManager : RunnerService, IActionManifestManager
{
private TemplateSchema _actionManifestSchema;
private IReadOnlyList<String> _fileTable;
public override void Initialize(IHostContext hostContext)
{
base.Initialize(hostContext);
var assembly = Assembly.GetExecutingAssembly();
var json = default(string);
using (var stream = assembly.GetManifestResourceStream("GitHub.Runner.Worker.action_yaml.json"))
using (var streamReader = new StreamReader(stream))
{
json = streamReader.ReadToEnd();
}
var objectReader = new JsonObjectReader(null, json);
_actionManifestSchema = TemplateSchema.Load(objectReader);
ArgUtil.NotNull(_actionManifestSchema, nameof(_actionManifestSchema));
Trace.Info($"Load schema file with definitions: {StringUtil.ConvertToJson(_actionManifestSchema.Definitions.Keys)}");
}
public ActionDefinitionData Load(IExecutionContext executionContext, string manifestFile)
{
var context = CreateContext(executionContext);
ActionDefinitionData actionDefinition = new ActionDefinitionData();
try
{
var token = default(TemplateToken);
// Get the file ID
var fileId = context.GetFileId(manifestFile);
_fileTable = context.GetFileTable();
// Read the file
var fileContent = File.ReadAllText(manifestFile);
using (var stringReader = new StringReader(fileContent))
{
var yamlObjectReader = new YamlObjectReader(null, stringReader);
token = TemplateReader.Read(context, "action-root", yamlObjectReader, fileId, out _);
}
var actionMapping = token.AssertMapping("action manifest root");
foreach (var actionPair in actionMapping)
{
var propertyName = actionPair.Key.AssertString($"action.yml property key");
switch (propertyName.Value)
{
case "name":
actionDefinition.Name = actionPair.Value.AssertString("name").Value;
break;
case "description":
actionDefinition.Description = actionPair.Value.AssertString("description").Value;
break;
case "inputs":
ConvertInputs(context, actionPair.Value, actionDefinition);
break;
case "runs":
actionDefinition.Execution = ConvertRuns(context, actionPair.Value);
break;
default:
Trace.Info($"Ignore action property {propertyName}.");
break;
}
}
}
catch (Exception ex)
{
Trace.Error(ex);
context.Errors.Add(ex);
}
if (context.Errors.Count > 0)
{
foreach (var error in context.Errors)
{
Trace.Error($"Action.yml load error: {error.Message}");
executionContext.Error(error.Message);
}
throw new ArgumentException($"Fail to load {manifestFile}");
}
if (actionDefinition.Execution == null)
{
executionContext.Debug($"Loaded action.yml file: {StringUtil.ConvertToJson(actionDefinition)}");
throw new ArgumentException($"Top level 'runs:' section is required for {manifestFile}");
}
else
{
Trace.Info($"Loaded action.yml file: {StringUtil.ConvertToJson(actionDefinition)}");
}
return actionDefinition;
}
public List<string> EvaluateContainerArguments(
IExecutionContext executionContext,
SequenceToken token,
IDictionary<string, PipelineContextData> extraExpressionValues)
{
var result = new List<string>();
if (token != null)
{
var context = CreateContext(executionContext, extraExpressionValues);
try
{
var evaluateResult = TemplateEvaluator.Evaluate(context, "container-runs-args", token, 0, null, omitHeader: true);
context.Errors.Check();
Trace.Info($"Arguments evaluate result: {StringUtil.ConvertToJson(evaluateResult)}");
// Sequence
var args = evaluateResult.AssertSequence("container args");
foreach (var arg in args)
{
var str = arg.AssertString("container arg").Value;
result.Add(str);
Trace.Info($"Add argument {str}");
}
}
catch (Exception ex) when (!(ex is TemplateValidationException))
{
Trace.Error(ex);
context.Errors.Add(ex);
}
context.Errors.Check();
}
return result;
}
public Dictionary<string, string> EvaluateContainerEnvironment(
IExecutionContext executionContext,
MappingToken token,
IDictionary<string, PipelineContextData> extraExpressionValues)
{
var result = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
if (token != null)
{
var context = CreateContext(executionContext, extraExpressionValues);
try
{
var evaluateResult = TemplateEvaluator.Evaluate(context, "container-runs-env", token, 0, null, omitHeader: true);
context.Errors.Check();
Trace.Info($"Environments evaluate result: {StringUtil.ConvertToJson(evaluateResult)}");
// Mapping
var mapping = evaluateResult.AssertMapping("container env");
foreach (var pair in mapping)
{
// Literal key
var key = pair.Key.AssertString("container env key");
// Literal value
var value = pair.Value.AssertString("container env value");
result[key.Value] = value.Value;
Trace.Info($"Add env {key} = {value}");
}
}
catch (Exception ex) when (!(ex is TemplateValidationException))
{
Trace.Error(ex);
context.Errors.Add(ex);
}
context.Errors.Check();
}
return result;
}
public string EvaluateDefaultInput(
IExecutionContext executionContext,
string inputName,
TemplateToken token)
{
string result = "";
if (token != null)
{
var context = CreateContext(executionContext);
try
{
var evaluateResult = TemplateEvaluator.Evaluate(context, "input-default-context", token, 0, null, omitHeader: true);
context.Errors.Check();
Trace.Info($"Input '{inputName}': default value evaluate result: {StringUtil.ConvertToJson(evaluateResult)}");
// String
result = evaluateResult.AssertString($"default value for input '{inputName}'").Value;
}
catch (Exception ex) when (!(ex is TemplateValidationException))
{
Trace.Error(ex);
context.Errors.Add(ex);
}
context.Errors.Check();
}
return result;
}
private TemplateContext CreateContext(
IExecutionContext executionContext,
IDictionary<string, PipelineContextData> extraExpressionValues = null)
{
var result = new TemplateContext
{
CancellationToken = CancellationToken.None,
Errors = new TemplateValidationErrors(10, 500),
Memory = new TemplateMemory(
maxDepth: 100,
maxEvents: 1000000,
maxBytes: 10 * 1024 * 1024),
Schema = _actionManifestSchema,
TraceWriter = executionContext.ToTemplateTraceWriter(),
};
// Expression values from execution context
foreach (var pair in executionContext.ExpressionValues)
{
result.ExpressionValues[pair.Key] = pair.Value;
}
// Extra expression values
if (extraExpressionValues?.Count > 0)
{
foreach (var pair in extraExpressionValues)
{
result.ExpressionValues[pair.Key] = pair.Value;
}
}
// Expression functions from execution context
foreach (var item in executionContext.ExpressionFunctions)
{
result.ExpressionFunctions.Add(item);
}
// Add the file table
if (_fileTable?.Count > 0)
{
for (var i = 0 ; i < _fileTable.Count ; i++)
{
result.GetFileId(_fileTable[i]);
}
}
return result;
}
private ActionExecutionData ConvertRuns(
TemplateContext context,
TemplateToken inputsToken)
{
var runsMapping = inputsToken.AssertMapping("runs");
var usingToken = default(StringToken);
var imageToken = default(StringToken);
var argsToken = default(SequenceToken);
var entrypointToken = default(StringToken);
var envToken = default(MappingToken);
var mainToken = default(StringToken);
var pluginToken = default(StringToken);
var preToken = default(StringToken);
var preEntrypointToken = default(StringToken);
var preIfToken = default(StringToken);
var postToken = default(StringToken);
var postEntrypointToken = default(StringToken);
var postIfToken = default(StringToken);
foreach (var run in runsMapping)
{
var runsKey = run.Key.AssertString("runs key").Value;
switch (runsKey)
{
case "using":
usingToken = run.Value.AssertString("using");
break;
case "image":
imageToken = run.Value.AssertString("image");
break;
case "args":
argsToken = run.Value.AssertSequence("args");
break;
case "entrypoint":
entrypointToken = run.Value.AssertString("entrypoint");
break;
case "env":
envToken = run.Value.AssertMapping("env");
break;
case "main":
mainToken = run.Value.AssertString("main");
break;
case "plugin":
pluginToken = run.Value.AssertString("plugin");
break;
case "post":
postToken = run.Value.AssertString("post");
break;
case "post-entrypoint":
postEntrypointToken = run.Value.AssertString("post-entrypoint");
break;
case "post-if":
postIfToken = run.Value.AssertString("post-if");
break;
case "pre":
preToken = run.Value.AssertString("pre");
break;
case "pre-entrypoint":
preEntrypointToken = run.Value.AssertString("pre-entrypoint");
break;
case "pre-if":
preIfToken = run.Value.AssertString("pre-if");
break;
default:
Trace.Info($"Ignore run property {runsKey}.");
break;
}
}
if (usingToken != null)
{
if (string.Equals(usingToken.Value, "docker", StringComparison.OrdinalIgnoreCase))
{
if (string.IsNullOrEmpty(imageToken?.Value))
{
throw new ArgumentNullException($"Image is not provided.");
}
else
{
return new ContainerActionExecutionData()
{
Image = imageToken.Value,
Arguments = argsToken,
EntryPoint = entrypointToken?.Value,
Environment = envToken,
Pre = preEntrypointToken?.Value,
InitCondition = preIfToken?.Value ?? "always()",
Post = postEntrypointToken?.Value,
CleanupCondition = postIfToken?.Value ?? "always()"
};
}
}
else if (string.Equals(usingToken.Value, "node12", StringComparison.OrdinalIgnoreCase))
{
if (string.IsNullOrEmpty(mainToken?.Value))
{
throw new ArgumentNullException($"Entry javascript file is not provided.");
}
else
{
return new NodeJSActionExecutionData()
{
Script = mainToken.Value,
Pre = preToken?.Value,
InitCondition = preIfToken?.Value ?? "always()",
Post = postToken?.Value,
CleanupCondition = postIfToken?.Value ?? "always()"
};
}
}
else
{
throw new ArgumentOutOfRangeException($"'using: {usingToken.Value}' is not supported, use 'docker' or 'node12' instead.");
}
}
else if (pluginToken != null)
{
return new PluginActionExecutionData()
{
Plugin = pluginToken.Value
};
}
throw new NotSupportedException(nameof(ConvertRuns));
}
private void ConvertInputs(
TemplateContext context,
TemplateToken inputsToken,
ActionDefinitionData actionDefinition)
{
actionDefinition.Inputs = new MappingToken(null, null, null);
var inputsMapping = inputsToken.AssertMapping("inputs");
foreach (var input in inputsMapping)
{
bool hasDefault = false;
var inputName = input.Key.AssertString("input name");
var inputMetadata = input.Value.AssertMapping("input metadata");
foreach (var metadata in inputMetadata)
{
var metadataName = metadata.Key.AssertString("input metadata").Value;
if (string.Equals(metadataName, "default", StringComparison.OrdinalIgnoreCase))
{
hasDefault = true;
actionDefinition.Inputs.Add(inputName, metadata.Value);
}
else if (string.Equals(metadataName, "deprecationMessage", StringComparison.OrdinalIgnoreCase))
{
if (actionDefinition.Deprecated == null)
{
actionDefinition.Deprecated = new Dictionary<String, String>();
}
var message = metadata.Value.AssertString("input deprecationMessage");
actionDefinition.Deprecated.Add(inputName.Value, message.Value);
}
}
if (!hasDefault)
{
actionDefinition.Inputs.Add(inputName, new StringToken(null, null, null, string.Empty));
}
}
}
}
}