public void CanCleanUpAfterAWorkflow()
{
var db = _mux.GetDatabase();
db.ScriptEvaluate("print(\"CanCleanUpAfterAWorkflow\")");
db.ScriptEvaluate("redis.call(\"flushdb\")");
var th = new TestTaskHandler();
var complete = new ManualResetEvent(false);
var wh = new WorkflowHandler();
wh.WorkflowComplete += (s, w) => { complete.Set(); };
using (var wm = new WorkflowManagement(_mux, th, wh, new WorkflowManagementId("test"), null, new Lua()))
{
var t1 = new TaskName("TestNode1");
var t2 = new TaskName("TestNode2");
var t3 = new TaskName("TestNode3");
var t4 = new TaskName("TestNode4");
var t5 = new TaskName("TestNode5");
var t6 = new TaskName("TestNode6");
var workflow = new Workflow(new WorkflowName("TestWorkflow"));
workflow.AddTask(t1, new Payload("Node1"), NoType, SimplePriority, EmptyTaskList, new[] { t2 });
workflow.AddTask(t2, new Payload("Node2"), NoType, SimplePriority, new[] { t1 }, new[] { t3, t4, t5, t6 });
workflow.AddTask(t3, new Payload("Node3"), NoType, SimplePriority, new[] { t2 }, EmptyTaskList);
workflow.AddTask(t4, new Payload("Node4"), NoType, SimplePriority, new[] { t2 }, EmptyTaskList);
workflow.AddTask(t5, new Payload("Node5"), NoType, SimplePriority, new[] { t2 }, EmptyTaskList);
workflow.AddTask(t6, new Payload("Node6"), NoType, SimplePriority, new[] { t2 }, EmptyTaskList);
var workflowId = wm.PushWorkflow(workflow);
var workflowCompleted = complete.WaitOne(2000); // machine-performance dependent, but 2 seconds is a long time
Assert.IsTrue(workflowCompleted);
var info = wm.FetchWorkflowInformation(workflowId.ToString());
Assert.AreEqual("1", info.Id);
Assert.AreEqual(6, info.Tasks.Count);
wm.CleanUp(workflowId.ToString());
db = _mux.GetDatabase();
for (var t = 0; t < 6; t++)
{
Assert.IsFalse(db.KeyExists("task:" + t));
Assert.IsFalse(db.KeyExists("parents-" + t));
Assert.IsFalse(db.KeyExists("children-" + t));
Assert.IsFalse(db.SetContains("tasks", t));
Assert.IsFalse(db.SetContains("submitted", t));
Assert.IsFalse(db.SetContains("complete", t));
Assert.IsFalse(db.SetContains("failed", t));
Assert.IsFalse(db.SetContains("abandoned", t));
Assert.AreEqual(0, db.ListRemove("running", t));
}
Assert.AreEqual(0, db.ListRemove("workflowComplete", "1"));
Assert.AreEqual(0, db.ListRemove("workflowFailed", "1"));
Assert.IsFalse(db.KeyExists("workflow-tasks-1"));
Assert.IsFalse(db.KeyExists("workflow-remaining-1"));
Assert.IsFalse(db.SetContains("workflows", "1"));
Assert.IsFalse(db.KeyExists("submitted:1"));
Assert.IsFalse(db.KeyExists("running:1"));
}
}
public void CanQueryForOwnTasks()
{
var db = _mux.GetDatabase();
db.ScriptEvaluate("print(\"CanSubmitAndRunAWorkflow\")");
db.ScriptEvaluate("redis.call(\"flushdb\")");
var th = new BlockingTaskHandler();
var complete = new ManualResetEvent(false);
var events = new List<string>();
var wh = new WorkflowHandler();
wh.WorkflowComplete += (s, w) => { events.Add("complete"); complete.Set(); };
using (var wm = new WorkflowManagement(_mux, th, wh, new WorkflowManagementId("test"), null, new Lua()))
{
var workflow = new Workflow(new WorkflowName("TestWorkflow"));
workflow.AddTask(new TaskName("TestNode1"), new Payload("Node1"), NoType, SimplePriority, EmptyTaskList, EmptyTaskList);
wm.PushWorkflow(workflow);
var taskWasStarted = th.Gate.WaitOne(2000);
Assert.IsTrue(taskWasStarted);
var myTasks = wm.FindTasks();
Assert.AreEqual(1, myTasks.Length);
Assert.AreEqual("1", myTasks[0]);
}
db.ScriptEvaluate("redis.call(\"flushdb\")");
}
public void CanReleaseAWorkflowWithTypedTasks()
{
var db = _mux.GetDatabase();
db.ScriptEvaluate("print(\"CanPauseAWorkflow\")");
db.ScriptEvaluate("redis.call(\"flushdb\")");
var th = new BlockingTaskHandler("1");
var complete = new ManualResetEvent(false);
var events = new List<string>();
var wh = new WorkflowHandler();
wh.WorkflowComplete += (s, w) => { events.Add("complete"); complete.Set(); };
var t1 = new TaskName("TestNode1");
var t2 = new TaskName("TestNode2");
var t3 = new TaskName("TestNode3");
var t4 = new TaskName("TestNode4");
var t5 = new TaskName("TestNode5");
var t6 = new TaskName("TestNode6");
var type1 = new TaskType("testTaskType");
var workflow = new Workflow(new WorkflowName("TestWorkflow"));
workflow.AddTask(t1, new Payload("Node1"), type1, SimplePriority, EmptyTaskList, new[] { t2 });
workflow.AddTask(t2, new Payload("Node2"), type1, SimplePriority, EmptyTaskList, new[] { t3, t4, t5, t6 });
workflow.AddTask(t3, new Payload("Node3"), type1, SimplePriority, new[] { t2 }, EmptyTaskList);
workflow.AddTask(t4, new Payload("Node4"), type1, SimplePriority, new[] { t2 }, EmptyTaskList);
workflow.AddTask(t5, new Payload("Node5"), type1, SimplePriority, new[] { t2 }, EmptyTaskList);
workflow.AddTask(t6, new Payload("Node6"), type1, SimplePriority, new[] { t2 }, EmptyTaskList);
using (var wm = new WorkflowManagement(_mux, th, wh, new WorkflowManagementId("test"), new[] { type1 }, new Lua()))
{
var workflowId = wm.PushWorkflow(workflow);
th.Gate.WaitOne();
wm.PauseWorkflow(workflowId);
wm.ReleaseWorkflow(workflowId);
Assert.AreEqual(1, db.ListLength("submitted:testTaskType"));
Assert.AreEqual(1, db.SetLength("running"));
}
db.ScriptEvaluate("redis.call(\"flushdb\")");
}
public void CanSubmitAndRunAWorkflowWithTypedTasks()
{
var db = _mux.GetDatabase();
db.ScriptEvaluate("print(\"CanSubmitAndRunAWorkflow\")");
db.ScriptEvaluate("redis.call(\"flushdb\")");
var th = new TestTaskHandler();
var complete = new ManualResetEvent(false);
var events = new List<string>();
var wh = new WorkflowHandler();
wh.WorkflowComplete += (s, w) => { events.Add("complete"); complete.Set(); };
var type1 = new TaskType("testTaskType");
var type2 = new TaskType("testTaskType2");
using (var wm = new WorkflowManagement(_mux, th, wh, new WorkflowManagementId("test"), new[] { type1 }, new Lua()))
using (var wm2 = new WorkflowManagement(_mux, th, wh, new WorkflowManagementId("test2"), new[] { type2 }, new Lua()))
{
var t1 = new TaskName("TestNode1");
var t2 = new TaskName("TestNode2");
var t3 = new TaskName("TestNode3");
var t4 = new TaskName("TestNode4");
var t5 = new TaskName("TestNode5");
var t6 = new TaskName("TestNode6");
var workflow = new Workflow(new WorkflowName("TestWorkflow"));
workflow.AddTask(t1, new Payload("Node1"), type1, SimplePriority, EmptyTaskList, new[] { t2 });
workflow.AddTask(t2, new Payload("Node2"), type1, SimplePriority, new[] { t1 }, new[] { t3, t4, t5, t6 });
workflow.AddTask(t3, new Payload("Node3"), type2, SimplePriority, new[] { t2 }, EmptyTaskList);
workflow.AddTask(t4, new Payload("Node4"), type1, SimplePriority, new[] { t2 }, EmptyTaskList);
workflow.AddTask(t5, new Payload("Node5"), type2, SimplePriority, new[] { t2 }, EmptyTaskList);
workflow.AddTask(t6, new Payload("Node6"), type1, SimplePriority, new[] { t2 }, EmptyTaskList);
wm.PushWorkflow(workflow);
var workflowWasCompleted = complete.WaitOne(2000);
Assert.IsTrue(workflowWasCompleted);
Console.WriteLine("WM events"); foreach (var ev in events) Console.WriteLine("Event: " + ev);
Assert.AreEqual(6, th.TaskRunCount);
}
}
public void IfATaskIsMarkedFailed_WorfklowFailsAndNoMoreTasksSubmitted()
{
var db = _mux.GetDatabase();
db.ScriptEvaluate("print(\"IfATaskIsMarkedFailed_WorfklowFailsAndNoMoreTasksSubmitted\")");
db.ScriptEvaluate("redis.call(\"flushdb\")");
var th = new ErroringTestTaskHandler(2);
var complete = new ManualResetEvent(false);
var failed = new ManualResetEvent(false);
var wh = new WorkflowHandler();
wh.WorkflowComplete += (s, w) => { complete.Set(); };
wh.WorkflowFailed += (s, w) => { failed.Set(); };
using (var wm = new WorkflowManagement(_mux, th, wh, new WorkflowManagementId("test"), null, new Lua()))
{
var t1 = new TaskName("TestNode1");
var t2 = new TaskName("TestNode2");
var t3 = new TaskName("TestNode3");
var t4 = new TaskName("TestNode4");
var workflow = new Workflow(new WorkflowName("TestWorkflow"));
workflow.AddTask(t1, new Payload("Node1"), NoType, SimplePriority, EmptyTaskList, new[] { t2 });
workflow.AddTask(t2, new Payload("Node2"), NoType, SimplePriority, new[] { t1 }, new[] { t3, t4 });
workflow.AddTask(t3, new Payload("Node3"), NoType, SimplePriority, new[] { t2 }, EmptyTaskList);
workflow.AddTask(t4, new Payload("Node4"), NoType, SimplePriority, new[] { t2 }, EmptyTaskList);
wm.PushWorkflow(workflow);
var result = WaitHandle.WaitAny(new[] { failed, complete }, 2000);
Assert.AreEqual(0, result);
Assert.AreEqual(2, th.TaskRunCount); // only 2 get sent through the task handler; second fails, so no children are executed
}
}
public void HandlesExceptionsFromBadLuaInAFailingWorkflow()
{
var cases = new[] { TestCase.FailTask, TestCase.PopFailedWorkflow };
foreach (var testCase in cases)
{
var lua = new BadLua(testCase);
var message = "HandlesExceptionsFromBadLuaInAFailingWorkflow:" + testCase;
var db = _mux.GetDatabase();
db.ScriptEvaluate("print(\"" + message + "\")");
db.ScriptEvaluate("redis.call(\"flushdb\")");
var th = new ErroringTestWithLongRunnerTaskHandler("Node4", "Node3");
var complete = new ManualResetEvent(false);
var failed = new ManualResetEvent(false);
var exception = new ManualResetEvent(false);
var events = new List<string>();
var wh = new WorkflowHandler();
wh.WorkflowComplete += (s, w) => { events.Add("complete"); complete.Set(); };
wh.WorkflowFailed += (s, w) => { events.Add("failed"); failed.Set(); };
EventHandler<Exception> eh = (s, e) => { events.Add(e.Message); exception.Set(); };
using (var wm = new WorkflowManagement(_mux, th, wh, new WorkflowManagementId("test"), null, lua, eh, Behaviours.Processor | Behaviours.Submitter))
{
var t1 = new TaskName("TestNode1");
var t2 = new TaskName("TestNode2");
var t3 = new TaskName("TestNode3");
var t4 = new TaskName("TestNode4");
var workflow = new Workflow(new WorkflowName("TestWorkflow"));
workflow.AddTask(t1, new Payload("Node1"), NoType, SimplePriority, EmptyTaskList, new [] { t2 });
workflow.AddTask(t2, new Payload("Node2"), NoType, SimplePriority, new [] { t1 }, new [] { t3, t4 });
workflow.AddTask(t3, new Payload("Node3"), NoType, SimplePriority, new [] { t2 }, EmptyTaskList);
workflow.AddTask(t4, new Payload("Node4"), NoType, SimplePriority, new [] { t2 }, EmptyTaskList);
wm.PushWorkflow(workflow);
var waitResult = WaitHandle.WaitAny(new[] { exception, failed, complete }, 2000);
Assert.AreEqual(0, waitResult);
}
}
}
public void CanCleanUpAfterAFailedWorkflow()
{
var db = _mux.GetDatabase();
db.ScriptEvaluate("print(\"CanCleanUpAfterAFailedWorkflow\")");
db.ScriptEvaluate("redis.call(\"flushdb\")");
var th = new ErroringTestWithLongRunnerTaskHandler("Node4", "Node3");
var complete = new ManualResetEvent(false);
var failed = new ManualResetEvent(false);
var exception = new ManualResetEvent(false);
var events = new List<string>();
var wh = new WorkflowHandler();
wh.WorkflowComplete += (s, w) => { events.Add("complete"); complete.Set(); };
wh.WorkflowFailed += (s, w) => { events.Add("failed"); failed.Set(); };
EventHandler<Exception> eh = (s, e) => { events.Add(e.Message); exception.Set(); };
using (var wm = new WorkflowManagement(_mux, th, wh, new WorkflowManagementId("test"), eh))
{
var t1 = new TaskName("TestNode1");
var t2 = new TaskName("TestNode2");
var t3 = new TaskName("TestNode3");
var t4 = new TaskName("TestNode4");
var workflow = new Workflow(new WorkflowName("TestWorkflow"));
workflow.AddTask(t1, new Payload("Node1"), NoType, SimplePriority, EmptyTaskList, new [] { t2 });
workflow.AddTask(t2, new Payload("Node2"), NoType, SimplePriority, new [] { t1 }, new [] { t3, t4 });
workflow.AddTask(t3, new Payload("Node3"), NoType, SimplePriority, new [] { t2 }, EmptyTaskList);
workflow.AddTask(t4, new Payload("Node4"), NoType, SimplePriority, new [] { t2 }, EmptyTaskList);
var workflowId = wm.PushWorkflow(workflow);
var result = WaitHandle.WaitAny(new[] { exception, failed, complete }, 2000);
if(result == 0) throw new Exception("Failed in workflow operation"); // in a real app, handler could add exception to a list to process
// In principle this is a failed workflow, as one of the tasks will fail
// However, if all tasks get started, then the succeeding leaf node finishes first, this will be marked successful
// Is a workflow considered complete when all tasks have started, or when all tasks have finished?
// CHoose latter.
Console.WriteLine("TaskHandler events"); foreach (var ev in th.Events) Console.WriteLine("TH event: " + ev);
Console.WriteLine("WM events"); foreach (var ev in events) Console.WriteLine("Event: " + ev);
Assert.AreEqual(1, result);
wm.CleanUp(workflowId.ToString());
}
// Should leave highwatermark id keys alone
db = _mux.GetDatabase();
for (var t = 0; t < 4; t++)
{
Assert.IsFalse(db.KeyExists("task:" + t));
Assert.IsFalse(db.KeyExists("parents-" + t));
Assert.IsFalse(db.KeyExists("children-" + t));
Assert.IsFalse(db.SetContains("tasks", t));
Assert.IsFalse(db.SetContains("submitted", t));
Assert.IsFalse(db.SetContains("complete", t));
Assert.IsFalse(db.SetContains("failed", t));
if (t == 3)
{
Assert.IsTrue(db.SetContains("abandoned", t));
db.SetRemove("abandoned", t);
}
else
Assert.IsFalse(db.SetContains("abandoned", t));
Assert.AreEqual(false, db.SetRemove("running", t));
}
Assert.AreEqual(0, db.ListRemove("workflowComplete", "1"));
Assert.AreEqual(0, db.ListRemove("workflowFailed", "1"));
Assert.IsFalse(db.KeyExists("workflow-tasks-1"));
Assert.IsFalse(db.KeyExists("workflow-remaining-1"));
Assert.IsFalse(db.SetContains("workflows", "1"));
}
public void ThrowsIfAWorkflowHasNoRootParents()
{
var db = _mux.GetDatabase();
db.ScriptEvaluate("print(\"ThrowsIfAWorkflowHasNoRootParents\")");
db.ScriptEvaluate("redis.call(\"flushdb\")");
var th = new BlockingTaskHandler();
th.LetRun.Set();
var complete = new ManualResetEvent(false);
var events = new List<string>();
var wh = new WorkflowHandler();
wh.WorkflowComplete += (s, w) => { events.Add("complete"); complete.Set(); };
using (var wm = new WorkflowManagement(_mux, th, wh, "test", null, new Lua()))
{
var workflowName = "TestWorkflow";
var tasks = new List<Task>();
tasks.Add(new Task { Name = "TestNode1", Payload = "Node1", Parents = new string[] { "TestNode0" }, Children = new string[] { }, Workflow = workflowName });
var workflow = new Workflow { Name = workflowName, Tasks = tasks };
wm.PushWorkflow(workflow);
var result = WaitHandle.WaitAny(new[] { complete }, 2000);
Assert.AreEqual(0, result);
}
db.ScriptEvaluate("redis.call(\"flushdb\")");
}
public void RunsTasksInPriorityOrder()
{
var db = _mux.GetDatabase();
db.ScriptEvaluate("print(\"CanSubmitAndRunAWorkflow\")");
db.ScriptEvaluate("redis.call(\"flushdb\")");
var th = new TestTaskHandler();
var complete = new ManualResetEvent(false);
var events = new List<string>();
var wh = new WorkflowHandler();
wh.WorkflowComplete += (s, w) => { events.Add("complete"); complete.Set(); };
using (var wm = new WorkflowManagement(_mux, th, wh, "test", null, new Lua()))
{
var workflowName = "TestWorkflow";
// 6 independent tasks in this workflow
var tasks = new List<Task>();
tasks.Add(new Task { Priority = 3, Type = "", Name = "TestNode1", Payload = "Node1", Parents = new string[] { }, Children = new string[] { }, Workflow = workflowName });
tasks.Add(new Task { Priority = 2, Type = "", Name = "TestNode2", Payload = "Node2", Parents = new string[] { }, Children = new string[] { }, Workflow = workflowName });
tasks.Add(new Task { Priority = 1, Type = "", Name = "TestNode3", Payload = "Node3", Parents = new string[] { }, Children = new string[] { }, Workflow = workflowName });
tasks.Add(new Task { Priority = 4, Type = "", Name = "TestNode4", Payload = "Node4", Parents = new string[] { }, Children = new string[] { }, Workflow = workflowName });
tasks.Add(new Task { Priority = 6, Type = "", Name = "TestNode5", Payload = "Node5", Parents = new string[] { }, Children = new string[] { }, Workflow = workflowName });
tasks.Add(new Task { Priority = 5, Type = "", Name = "TestNode6", Payload = "Node6", Parents = new string[] { }, Children = new string[] { }, Workflow = workflowName });
var workflow = new Workflow { Name = workflowName, Tasks = tasks };
wm.PushWorkflow(workflow);
var workflowWasCompleted = complete.WaitOne(2000);
Assert.IsTrue(workflowWasCompleted);
Console.WriteLine("WM events"); foreach (var ev in events) Console.WriteLine("Event: " + ev);
Assert.AreEqual(6, th.TaskRunCount);
Assert.AreEqual("Node3", th.Payloads[0]);
Assert.AreEqual("Node2", th.Payloads[1]);
Assert.AreEqual("Node1", th.Payloads[2]);
Assert.AreEqual("Node4", th.Payloads[3]);
Assert.AreEqual("Node6", th.Payloads[4]);
Assert.AreEqual("Node5", th.Payloads[5]);
}
}
public async System.Threading.Tasks.Task<long?> PushWorkflowAsync(Workflow workflow)
{
var json = workflow.ToJson();
var workflowId = await _lua.PushWorkflowAsync(_db, json, Timestamp());
return workflowId.Value;
}
public void HandlesExceptionsFromBadLuaInAFailingWorkflow()
{
var cases = new[] { TestCase.FailTask, TestCase.PopFailedWorkflow };
foreach (var testCase in cases)
{
var lua = new BadLua(testCase);
var message = "HandlesExceptionsFromBadLuaInAFailingWorkflow:" + testCase;
var db = _mux.GetDatabase();
db.ScriptEvaluate("print(\"" + message + "\")");
db.ScriptEvaluate("redis.call(\"flushdb\")");
var th = new ErroringTestWithLongRunnerTaskHandler("Node4", "Node3");
var complete = new ManualResetEvent(false);
var failed = new ManualResetEvent(false);
var exception = new ManualResetEvent(false);
var events = new List<string>();
var wh = new WorkflowHandler();
wh.WorkflowComplete += (s, w) => { events.Add("complete"); complete.Set(); };
wh.WorkflowFailed += (s, w) => { events.Add("failed"); failed.Set(); };
EventHandler<Exception> eh = (s, e) => { events.Add(e.Message); exception.Set(); };
using (var wm = new WorkflowManagement(_mux, th, wh, "test", null, lua, eh, Behaviours.Processor | Behaviours.Submitter))
{
var workflowName = "TestWorkflow";
var tasks = new List<Task>();
tasks.Add(new Task { Type = "", Name = "TestNode1", Payload = "Node1", Parents = new string[] { }, Children = new string[] { "TestNode2" }, Workflow = workflowName });
tasks.Add(new Task { Type = "", Name = "TestNode2", Payload = "Node2", Parents = new string[] { "TestNode1" }, Children = new string[] { "TestNode3", "TestNode4" }, Workflow = workflowName });
tasks.Add(new Task { Type = "", Name = "TestNode3", Payload = "Node3", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
tasks.Add(new Task { Type = "", Name = "TestNode4", Payload = "Node4", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
var workflow = new Workflow { Name = workflowName, Tasks = tasks };
wm.PushWorkflow(workflow);
var waitResult = WaitHandle.WaitAny(new[] { exception, failed, complete }, 2000);
Assert.AreEqual(0, waitResult);
}
}
}
/// <summary>
/// Pushes an executable workflow into the system. Task Names are assumed to be unique; there's
/// no checking of integrity and consistency of child-parent relationships (so no guarantee of transitive
/// closure and so on). Creates a new instance of this workflow which is available for execution
/// immediately.
/// </summary>
/// <param name="workflow"></param>
/// <param name="tasks"></param>
/// <returns>The handle used to identify this workflow instance</returns>
public long? PushWorkflow(Workflow workflow)
{
var rootParentCount = 0;
foreach(var task in workflow.Tasks)
{
if(task.Parents.Length == 0)
{
rootParentCount++;
}
}
if(rootParentCount == 0)
{
throw new ArgumentException("A workflow must have at least one task with no parents.", "workflow");
}
var json = workflow.ToJson();
var workflowId = _lua.PushWorkflow(_db, json, Timestamp());
return workflowId.Value;
}
/// <summary>
/// Pushes an executable workflow into the system. Task Names are assumed to be unique; there's
/// no checking of integrity and consistency of child-parent relationships (so no guarantee of transitive
/// closure and so on). Creates a new instance of this workflow which is available for execution
/// immediately.
/// </summary>
/// <param name="workflow"></param>
/// <param name="checkConsistency">Optionally checks the internal consistency of the workflow</param>
/// <returns>The handle used to identify this workflow instance</returns>
public long? PushWorkflow(Workflow workflow, bool checkConsistency = true)
{
if (checkConsistency) workflow.VerifyInternalConsistency();
var json = workflow.ToJson();
var workflowId = _lua.PushWorkflow(_db, json, Timestamp());
return workflowId.Value;
}
public void CanPauseAWorkflowWithTypedTasks()
{
var db = _mux.GetDatabase();
db.ScriptEvaluate("print(\"CanPauseAWorkflow\")");
db.ScriptEvaluate("redis.call(\"flushdb\")");
var th = new BlockingTaskHandler("1");
var complete = new ManualResetEvent(false);
var events = new List <string>();
var wh = new WorkflowHandler();
wh.WorkflowComplete += (s, w) => { events.Add("complete"); complete.Set(); };
var t1 = new TaskName("TestNode1");
var t2 = new TaskName("TestNode2");
var t3 = new TaskName("TestNode3");
var t4 = new TaskName("TestNode4");
var t5 = new TaskName("TestNode5");
var t6 = new TaskName("TestNode6");
var type1 = new TaskType("testTaskType");
var workflow = new Workflow(new WorkflowName("TestWorkflow"));
workflow.AddTask(t1, new Payload("Node1"), type1, SimplePriority, EmptyTaskList, new[] { t2 });
workflow.AddTask(t2, new Payload("Node2"), type1, SimplePriority, EmptyTaskList, new[] { t3, t4, t5, t6 });
workflow.AddTask(t3, new Payload("Node3"), type1, SimplePriority, new[] { t2 }, EmptyTaskList);
workflow.AddTask(t4, new Payload("Node4"), type1, SimplePriority, new[] { t2 }, EmptyTaskList);
workflow.AddTask(t5, new Payload("Node5"), type1, SimplePriority, new[] { t2 }, EmptyTaskList);
workflow.AddTask(t6, new Payload("Node6"), type1, SimplePriority, new[] { t2 }, EmptyTaskList);
using (var wm = new WorkflowManagement(_mux, th, wh, new WorkflowManagementId("test"), new[] { type1 }, new Lua()))
{
var workflowId = wm.PushWorkflow(workflow);
th.Gate.WaitOne();
Assert.AreEqual(1, db.SortedSetLength("submitted:testTaskType"));
Assert.AreEqual(1, db.SetLength("running"));
wm.PauseWorkflow(workflowId);
var expected = new List <string> {
"1", "2"
};
var state = "paused";
CheckSetContent(db, expected, state);
// The running task will run bang into the new state
th.LetRun.Set();
Thread.Sleep(500); // gah, honestly. I won't get a signal because no new tasks should be submitted
expected = new List <string> {
"2"
};
state = "paused";
CheckSetContent(db, expected, state);
expected = new List <string> {
"2"
};
state = "running";
CheckSetContent(db, expected, state, false);
// If this is checked before the task has completed then there'll be two paused tasks
// We've got no hook into the completion event as yet
Assert.AreEqual(1, db.SetLength("paused"));
Assert.AreEqual(1, db.SetLength("paused:1"));
Assert.AreEqual(0, db.ListLength("submitted:testTaskType"));
Assert.AreEqual(0, db.SetLength("running"));
}
db.ScriptEvaluate("redis.call(\"flushdb\")");
}
public void CanPauseAWorkflow()
{
var db = _mux.GetDatabase();
db.ScriptEvaluate("print(\"CanPauseAWorkflow\")");
db.ScriptEvaluate("redis.call(\"flushdb\")");
var th = new BlockingTaskHandler("1");
var complete = new ManualResetEvent(false);
var events = new List<string>();
var wh = new WorkflowHandler();
wh.WorkflowComplete += (s, w) => { events.Add("complete"); complete.Set(); };
var workflowName = "TestWorkflow";
var tasks = new List<Task>();
tasks.Add(new Task { Type = "", Name = "TestNode1", Payload = "Node1", Parents = new string[] { }, Children = new string[] { "TestNode2" }, Workflow = workflowName });
tasks.Add(new Task { Type = "", Name = "TestNode2", Payload = "Node2", Parents = new string[] { }, Children = new string[] { "TestNode3", "TestNode4", "TestNode5", "TestNode6" }, Workflow = workflowName });
tasks.Add(new Task { Type = "", Name = "TestNode3", Payload = "Node3", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
tasks.Add(new Task { Type = "", Name = "TestNode4", Payload = "Node4", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
tasks.Add(new Task { Type = "", Name = "TestNode5", Payload = "Node5", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
tasks.Add(new Task { Type = "", Name = "TestNode6", Payload = "Node6", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
var workflow = new Workflow { Name = workflowName, Tasks = tasks };
using (var wm = new WorkflowManagement(_mux, th, wh, "test", null, new Lua()))
{
var workflowId = wm.PushWorkflow(workflow);
th.Gate.WaitOne();
Assert.AreEqual(1, db.SortedSetLength("submitted"));
Assert.AreEqual(1, db.SetLength("running"));
wm.PauseWorkflow(workflowId);
var expected = new List<string> { "1", "2" };
var state = "paused";
CheckSetContent(db, expected, state);
// The running task will run bang into the new state
th.LetRun.Set();
Thread.Sleep(500); // gah, honestly. I won't get a signal because no new tasks should be submitted
expected = new List<string> { "2" };
state = "paused";
CheckSetContent(db, expected, state);
expected = new List<string> { "2" };
state = "running";
CheckSetContent(db, expected, state, false);
// If this is checked before the task has completed then there'll be two paused tasks
// We've got no hook into the completion event as yet
Assert.AreEqual(1, db.SetLength("paused"));
Assert.AreEqual(1, db.SetLength("paused:1"));
Assert.AreEqual(0, db.SortedSetLength("submitted"));
Assert.AreEqual(0, db.SetLength("running"));
}
db.ScriptEvaluate("redis.call(\"flushdb\")");
}
public void CanSubmitAndRunAWorkflowWithTypedTasks()
{
var db = _mux.GetDatabase();
db.ScriptEvaluate("print(\"CanSubmitAndRunAWorkflow\")");
db.ScriptEvaluate("redis.call(\"flushdb\")");
var th = new TestTaskHandler();
var complete = new ManualResetEvent(false);
var events = new List<string>();
var wh = new WorkflowHandler();
wh.WorkflowComplete += (s, w) => { events.Add("complete"); complete.Set(); };
using (var wm = new WorkflowManagement(_mux, th, wh, "test", new[] { "testTaskType" }, new Lua()))
using (var wm2 = new WorkflowManagement(_mux, th, wh, "test2", new[] { "testTaskType2" }, new Lua()))
{
var workflowName = "TestWorkflow";
var tasks = new List<Task>();
tasks.Add(new Task { Type = "testTaskType", Name = "TestNode1", Payload = "Node1", Parents = new string[] { }, Children = new string[] { "TestNode2" }, Workflow = workflowName });
tasks.Add(new Task { Type = "testTaskType", Name = "TestNode2", Payload = "Node2", Parents = new string[] { "TestNode1" }, Children = new string[] { "TestNode3", "TestNode4", "TestNode5", "TestNode6" }, Workflow = workflowName });
tasks.Add(new Task { Type = "testTaskType2", Name = "TestNode3", Payload = "Node3", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
tasks.Add(new Task { Type = "testTaskType", Name = "TestNode4", Payload = "Node4", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
tasks.Add(new Task { Type = "testTaskType2", Name = "TestNode5", Payload = "Node5", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
tasks.Add(new Task { Type = "testTaskType", Name = "TestNode6", Payload = "Node6", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
var workflow = new Workflow { Name = workflowName, Tasks = tasks };
wm.PushWorkflow(workflow);
var workflowWasCompleted = complete.WaitOne(2000);
Assert.IsTrue(workflowWasCompleted);
Console.WriteLine("WM events"); foreach (var ev in events) Console.WriteLine("Event: " + ev);
Assert.AreEqual(6, th.TaskRunCount);
}
}
public void HandlesExceptionsFromBadLuaInASucceedingWorkflow()
{
var cases = new[] { TestCase.PopTask, TestCase.CompleteTask, TestCase.PopCompleteWorkflow };
foreach (var testCase in cases)
{
var lua = new BadLua(testCase);
var message = "HandlesExceptionsFromBadLuaInASucceedingWorkflow:" + testCase;
var db = _mux.GetDatabase();
db.ScriptEvaluate("print(\"" + message + "\")");
db.ScriptEvaluate("redis.call(\"flushdb\")");
var th = new TestTaskHandler();
var complete = new ManualResetEvent(false);
var failed = new ManualResetEvent(false);
var exception = new ManualResetEvent(false);
var events = new List<string>();
var wh = new WorkflowHandler();
wh.WorkflowComplete += (s, w) => { events.Add("complete"); complete.Set(); };
wh.WorkflowFailed += (s, w) => { events.Add("failed"); failed.Set(); };
EventHandler<Exception> eh = (s, e) => { events.Add(e.Message); exception.Set(); };
using (var wm = new WorkflowManagement(_mux, th, wh, new WorkflowManagementId("test"), null, lua, eh, Behaviours.Processor | Behaviours.Submitter))
{
var workflow = new Workflow(new WorkflowName("TestWorkflow"));
workflow.AddTask(new TaskName("TestNode1"), new Payload("Node1"), new TaskType(""), new TaskPriority(1), new TaskName[0], new TaskName[0]);
wm.PushWorkflow(workflow);
var waitResult = WaitHandle.WaitAny(new[] { exception, failed, complete }, 2000);
Assert.AreEqual(0, waitResult);
}
}
}
public void CanCleanUpAfterAWorkflow()
{
var db = _mux.GetDatabase();
db.ScriptEvaluate("print(\"CanCleanUpAfterAWorkflow\")");
db.ScriptEvaluate("redis.call(\"flushdb\")");
var th = new TestTaskHandler();
var complete = new ManualResetEvent(false);
var wh = new WorkflowHandler();
wh.WorkflowComplete += (s, w) => { complete.Set(); };
using (var wm = new WorkflowManagement(_mux, th, wh, "test", null, new Lua()))
{
var workflowName = "TestWorkflow";
var tasks = new List<Task>();
tasks.Add(new Task { Type = "", Name = "TestNode1", Payload = "Node1", Parents = new string[] { }, Children = new string[] { "TestNode2" }, Workflow = workflowName });
tasks.Add(new Task { Type = "", Name = "TestNode2", Payload = "Node2", Parents = new string[] { "TestNode1" }, Children = new string[] { "TestNode3", "TestNode4", "TestNode5", "TestNode6" }, Workflow = workflowName });
tasks.Add(new Task { Type = "", Name = "TestNode3", Payload = "Node3", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
tasks.Add(new Task { Type = "", Name = "TestNode4", Payload = "Node4", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
tasks.Add(new Task { Type = "", Name = "TestNode5", Payload = "Node5", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
tasks.Add(new Task { Type = "", Name = "TestNode6", Payload = "Node6", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
var workflow = new Workflow { Name = workflowName, Tasks = tasks };
var workflowId = wm.PushWorkflow(workflow);
var workflowCompleted = complete.WaitOne(2000); // machine-performance dependent, but 2 seconds is a long time
Assert.IsTrue(workflowCompleted);
var info = wm.FetchWorkflowInformation(workflowId.ToString());
Assert.AreEqual("1", info.Id);
Assert.AreEqual(6, info.Tasks.Count);
wm.CleanUp(workflowId.ToString());
db = _mux.GetDatabase();
for (var t = 0; t < 6; t++)
{
Assert.IsFalse(db.KeyExists("task:" + t));
Assert.IsFalse(db.KeyExists("parents-" + t));
Assert.IsFalse(db.KeyExists("children-" + t));
Assert.IsFalse(db.SetContains("tasks", t));
Assert.IsFalse(db.SetContains("submitted", t));
Assert.IsFalse(db.SetContains("complete", t));
Assert.IsFalse(db.SetContains("failed", t));
Assert.IsFalse(db.SetContains("abandoned", t));
Assert.AreEqual(0, db.ListRemove("running", t));
}
Assert.AreEqual(0, db.ListRemove("workflowComplete", "1"));
Assert.AreEqual(0, db.ListRemove("workflowFailed", "1"));
Assert.IsFalse(db.KeyExists("workflow-tasks-1"));
Assert.IsFalse(db.KeyExists("workflow-remaining-1"));
Assert.IsFalse(db.SetContains("workflows", "1"));
Assert.IsFalse(db.KeyExists("submitted:1"));
Assert.IsFalse(db.KeyExists("running:1"));
}
}
public void ThrowsIfAWorkflowHasNoRootParents()
{
var db = _mux.GetDatabase();
db.ScriptEvaluate("print(\"ThrowsIfAWorkflowHasNoRootParents\")");
db.ScriptEvaluate("redis.call(\"flushdb\")");
var th = new BlockingTaskHandler();
th.LetRun.Set();
var complete = new ManualResetEvent(false);
var events = new List<string>();
var wh = new WorkflowHandler();
wh.WorkflowComplete += (s, w) => { events.Add("complete"); complete.Set(); };
using (var wm = new WorkflowManagement(_mux, th, wh, new WorkflowManagementId("test"), null, new Lua()))
{
var workflow = new Workflow(new WorkflowName("TestWorkflow"));
workflow.AddTask(new TaskName("TestNode1"), new Payload("Node1"), NoType, SimplePriority, new [] { new TaskName("SomeParent") }, EmptyTaskList);
wm.PushWorkflow(workflow);
var result = WaitHandle.WaitAny(new[] { complete }, 2000);
Assert.AreEqual(0, result);
}
db.ScriptEvaluate("redis.call(\"flushdb\")");
}
public void IfATaskIsMarkedFailed_WorfklowFailsAndNoMoreTasksSubmitted()
{
var db = _mux.GetDatabase();
db.ScriptEvaluate("print(\"IfATaskIsMarkedFailed_WorfklowFailsAndNoMoreTasksSubmitted\")");
db.ScriptEvaluate("redis.call(\"flushdb\")");
var th = new ErroringTestTaskHandler(2);
var complete = new ManualResetEvent(false);
var failed = new ManualResetEvent(false);
var wh = new WorkflowHandler();
wh.WorkflowComplete += (s, w) => { complete.Set(); };
wh.WorkflowFailed += (s, w) => { failed.Set(); };
using (var wm = new WorkflowManagement(_mux, th, wh, "test", null, new Lua()))
{
var workflowName = "TestWorkflow";
var tasks = new List<Task>();
tasks.Add(new Task { Type = "", Name = "TestNode1", Payload = "Node1", Parents = new string[] { }, Children = new string[] { "TestNode2" }, Workflow = workflowName });
tasks.Add(new Task { Type = "", Name = "TestNode2", Payload = "Node2", Parents = new string[] { "TestNode1" }, Children = new string[] { "TestNode3", "TestNode4" }, Workflow = workflowName });
tasks.Add(new Task { Type = "", Name = "TestNode3", Payload = "Node3", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
tasks.Add(new Task { Type = "", Name = "TestNode4", Payload = "Node4", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
var workflow = new Workflow { Name = workflowName, Tasks = tasks };
wm.PushWorkflow(workflow);
var result = WaitHandle.WaitAny(new[] { failed, complete }, 2000);
Assert.AreEqual(0, result);
Assert.AreEqual(2, th.TaskRunCount); // only 2 get sent through the task handler; second fails, so no children are executed
}
}
public void RunsTasksInPriorityOrder()
{
var db = _mux.GetDatabase();
db.ScriptEvaluate("print(\"CanSubmitAndRunAWorkflow\")");
db.ScriptEvaluate("redis.call(\"flushdb\")");
var th = new TestTaskHandler();
var complete = new ManualResetEvent(false);
var events = new List<string>();
var wh = new WorkflowHandler();
wh.WorkflowComplete += (s, w) => { events.Add("complete"); complete.Set(); };
using (var wm = new WorkflowManagement(_mux, th, wh, new WorkflowManagementId("test"), null, new Lua()))
{
var workflow = new Workflow(new WorkflowName("TestWorkflow"));
workflow.AddTask(new TaskName("TestNode1"), new Payload("Node1"), NoType, new TaskPriority(3), EmptyTaskList, EmptyTaskList);
workflow.AddTask(new TaskName("TestNode2"), new Payload("Node2"), NoType, new TaskPriority(2), EmptyTaskList, EmptyTaskList);
workflow.AddTask(new TaskName("TestNode3"), new Payload("Node3"), NoType, new TaskPriority(1), EmptyTaskList, EmptyTaskList);
workflow.AddTask(new TaskName("TestNode4"), new Payload("Node4"), NoType, new TaskPriority(4), EmptyTaskList, EmptyTaskList);
workflow.AddTask(new TaskName("TestNode5"), new Payload("Node5"), NoType, new TaskPriority(6), EmptyTaskList, EmptyTaskList);
workflow.AddTask(new TaskName("TestNode6"), new Payload("Node6"), NoType, new TaskPriority(5), EmptyTaskList, EmptyTaskList);
wm.PushWorkflow(workflow);
var workflowWasCompleted = complete.WaitOne(2000);
Assert.IsTrue(workflowWasCompleted);
Console.WriteLine("WM events"); foreach (var ev in events) Console.WriteLine("Event: " + ev);
Assert.AreEqual(6, th.TaskRunCount);
Assert.AreEqual("Node3", th.Payloads[0]);
Assert.AreEqual("Node2", th.Payloads[1]);
Assert.AreEqual("Node1", th.Payloads[2]);
Assert.AreEqual("Node4", th.Payloads[3]);
Assert.AreEqual("Node6", th.Payloads[4]);
Assert.AreEqual("Node5", th.Payloads[5]);
}
}
public void CanSubmitAWorkflowAsync()
{
var db = _mux.GetDatabase();
db.ScriptEvaluate("print(\"CanSubmitAndRunAWorkflow\")");
db.ScriptEvaluate("redis.call(\"flushdb\")");
var th = new BlockingTaskHandler();
th.LetRun.Set();
var complete = new ManualResetEvent(false);
var events = new List<string>();
var wh = new WorkflowHandler();
wh.WorkflowComplete += (s, w) => { events.Add("complete"); complete.Set(); };
using (var wm = new WorkflowManagement(_mux, th, wh, "test", null, new Lua()))
{
var workflowName = "TestWorkflow";
var tasks = new List<Task>();
tasks.Add(new Task { Type = "", Name = "TestNode1", Payload = "Node1", Parents = new string[] { }, Children = new string[] { "TestNode2" }, Workflow = workflowName });
tasks.Add(new Task { Type = "", Name = "TestNode2", Payload = "Node2", Parents = new string[] { "TestNode1" }, Children = new string[] { "TestNode3", "TestNode4", "TestNode5", "TestNode6" }, Workflow = workflowName });
tasks.Add(new Task { Type = "", Name = "TestNode3", Payload = "Node3", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
tasks.Add(new Task { Type = "", Name = "TestNode4", Payload = "Node4", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
tasks.Add(new Task { Type = "", Name = "TestNode5", Payload = "Node5", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
tasks.Add(new Task { Type = "", Name = "TestNode6", Payload = "Node6", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
var workflow = new Workflow { Name = workflowName, Tasks = tasks };
var id = wm.PushWorkflowAsync(workflow);
id.Wait();
}
db.ScriptEvaluate("redis.call(\"flushdb\")");
}
public void CanCleanUpAfterAWorkflow()
{
var db = _mux.GetDatabase();
db.ScriptEvaluate("print(\"CanCleanUpAfterAWorkflow\")");
db.ScriptEvaluate("redis.call(\"flushdb\")");
var th = new TestTaskHandler();
var complete = new ManualResetEvent(false);
var wh = new WorkflowHandler();
wh.WorkflowComplete += (s, w) => { complete.Set(); };
using (var wm = new WorkflowManagement(_mux, th, wh, new WorkflowManagementId("test"), null, new Lua()))
{
var t1 = new TaskName("TestNode1");
var t2 = new TaskName("TestNode2");
var t3 = new TaskName("TestNode3");
var t4 = new TaskName("TestNode4");
var t5 = new TaskName("TestNode5");
var t6 = new TaskName("TestNode6");
var workflow = new Workflow(new WorkflowName("TestWorkflow"));
workflow.AddTask(t1, new Payload("Node1"), NoType, SimplePriority, EmptyTaskList, new[] { t2 });
workflow.AddTask(t2, new Payload("Node2"), NoType, SimplePriority, new[] { t1 }, new[] { t3, t4, t5, t6 });
workflow.AddTask(t3, new Payload("Node3"), NoType, SimplePriority, new[] { t2 }, EmptyTaskList);
workflow.AddTask(t4, new Payload("Node4"), NoType, SimplePriority, new[] { t2 }, EmptyTaskList);
workflow.AddTask(t5, new Payload("Node5"), NoType, SimplePriority, new[] { t2 }, EmptyTaskList);
workflow.AddTask(t6, new Payload("Node6"), NoType, SimplePriority, new[] { t2 }, EmptyTaskList);
var workflowId = wm.PushWorkflow(workflow);
var workflowCompleted = complete.WaitOne(2000); // machine-performance dependent, but 2 seconds is a long time
Assert.IsTrue(workflowCompleted);
var info = wm.FetchWorkflowInformation(workflowId.ToString());
Assert.AreEqual("1", info.Id);
Assert.AreEqual(6, info.Tasks.Count);
wm.CleanUp(workflowId.ToString());
db = _mux.GetDatabase();
for (var t = 0; t < 6; t++)
{
Assert.IsFalse(db.KeyExists("task:" + t));
Assert.IsFalse(db.KeyExists("parents-" + t));
Assert.IsFalse(db.KeyExists("children-" + t));
Assert.IsFalse(db.SetContains("tasks", t));
Assert.IsFalse(db.SetContains("submitted", t));
Assert.IsFalse(db.SetContains("complete", t));
Assert.IsFalse(db.SetContains("failed", t));
Assert.IsFalse(db.SetContains("abandoned", t));
Assert.AreEqual(0, db.ListRemove("running", t));
}
Assert.AreEqual(0, db.ListRemove("workflowComplete", "1"));
Assert.AreEqual(0, db.ListRemove("workflowFailed", "1"));
Assert.IsFalse(db.KeyExists("workflow-tasks-1"));
Assert.IsFalse(db.KeyExists("workflow-remaining-1"));
Assert.IsFalse(db.SetContains("workflows", "1"));
Assert.IsFalse(db.KeyExists("submitted:1"));
Assert.IsFalse(db.KeyExists("running:1"));
}
}
public void CanQueryForOwnTasks()
{
var db = _mux.GetDatabase();
db.ScriptEvaluate("print(\"CanSubmitAndRunAWorkflow\")");
db.ScriptEvaluate("redis.call(\"flushdb\")");
var th = new BlockingTaskHandler();
var complete = new ManualResetEvent(false);
var events = new List<string>();
var wh = new WorkflowHandler();
wh.WorkflowComplete += (s, w) => { events.Add("complete"); complete.Set(); };
using (var wm = new WorkflowManagement(_mux, th, wh, "test", null, new Lua()))
{
var workflowName = "TestWorkflow";
var tasks = new List<Task>();
tasks.Add(new Task { Type = "", Name = "TestNode1", Payload = "Node1", Parents = new string[] { }, Children = new string[] { "TestNode2" }, Workflow = workflowName });
var workflow = new Workflow { Name = workflowName, Tasks = tasks };
wm.PushWorkflow(workflow);
var taskWasStarted = th.Gate.WaitOne(2000);
Assert.IsTrue(taskWasStarted);
var myTasks = wm.FindTasks();
Assert.AreEqual(1, myTasks.Length);
Assert.AreEqual("1", myTasks[0]);
}
db.ScriptEvaluate("redis.call(\"flushdb\")");
}
public void CanSubmitAWorkflowAsync()
{
var db = _mux.GetDatabase();
db.ScriptEvaluate("print(\"CanSubmitAndRunAWorkflow\")");
db.ScriptEvaluate("redis.call(\"flushdb\")");
var th = new BlockingTaskHandler();
th.LetRun.Set();
var complete = new ManualResetEvent(false);
var events = new List<string>();
var wh = new WorkflowHandler();
wh.WorkflowComplete += (s, w) => { events.Add("complete"); complete.Set(); };
using (var wm = new WorkflowManagement(_mux, th, wh, new WorkflowManagementId("test"), null, new Lua()))
{
var t1 = new TaskName("TestNode1");
var t2 = new TaskName("TestNode2");
var t3 = new TaskName("TestNode3");
var t4 = new TaskName("TestNode4");
var t5 = new TaskName("TestNode5");
var t6 = new TaskName("TestNode6");
var workflow = new Workflow(new WorkflowName("TestWorkflow"));
workflow.AddTask(t1, new Payload("Node1"), NoType, SimplePriority, EmptyTaskList, new[] { t2 });
workflow.AddTask(t2, new Payload("Node2"), NoType, SimplePriority, new[] { t1 }, new[] { t3, t4, t5, t6 });
workflow.AddTask(t3, new Payload("Node3"), NoType, SimplePriority, new[] { t2 }, EmptyTaskList);
workflow.AddTask(t4, new Payload("Node4"), NoType, SimplePriority, new[] { t2 }, EmptyTaskList);
workflow.AddTask(t5, new Payload("Node5"), NoType, SimplePriority, new[] { t2 }, EmptyTaskList);
workflow.AddTask(t6, new Payload("Node6"), NoType, SimplePriority, new[] { t2 }, EmptyTaskList);
var id = wm.PushWorkflowAsync(workflow);
id.Wait();
}
db.ScriptEvaluate("redis.call(\"flushdb\")");
}
public void CanResetOwnTasks()
{
var db = _mux.GetDatabase();
db.ScriptEvaluate("print(\"CanSubmitAndRunAWorkflow\")");
db.ScriptEvaluate("redis.call(\"flushdb\")");
var th = new BlockingTaskHandler("1");
var th2 = new BlockingTaskHandler("2");
var complete = new ManualResetEvent(false);
var events = new List<string>();
var wh = new WorkflowHandler();
wh.WorkflowComplete += (s, w) => { events.Add("complete"); complete.Set(); };
var workflowName = "TestWorkflow";
var tasks = new List<Task>();
tasks.Add(new Task { Type = "", Name = "TestNode1", Payload = "Node1", Parents = new string[] { }, Children = new string[] { "TestNode2" }, Workflow = workflowName });
tasks.Add(new Task { Type = "", Name = "TestNode2", Payload = "Node2", Parents = new string[] { "TestNode1" }, Children = new string[] { "TestNode3", "TestNode4", "TestNode5", "TestNode6" }, Workflow = workflowName });
tasks.Add(new Task { Type = "", Name = "TestNode3", Payload = "Node3", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
tasks.Add(new Task { Type = "", Name = "TestNode4", Payload = "Node4", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
tasks.Add(new Task { Type = "", Name = "TestNode5", Payload = "Node5", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
tasks.Add(new Task { Type = "", Name = "TestNode6", Payload = "Node6", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
var workflow = new Workflow { Name = workflowName, Tasks = tasks };
using (var wm = new WorkflowManagement(_mux, th, wh, "test", null, new Lua()))
{
wm.PushWorkflow(workflow);
// we've picked up the first task, and don't want to pick up any more
th.Gate.WaitOne();
Assert.AreEqual(0, db.ListLength("submitted"));
}
// create a new wm to simulate a restart of a component
using (var wm2 = new WorkflowManagement(_mux, th2, wh, "test", null, new Lua()))
{
Assert.AreEqual(1, db.SortedSetLength("submitted"));
th.Abort.Set();
th2.LetRun.Set();
complete.WaitOne();
}
db.ScriptEvaluate("redis.call(\"flushdb\")");
}
public void CanResetOwnTasks()
{
var db = _mux.GetDatabase();
db.ScriptEvaluate("print(\"CanSubmitAndRunAWorkflow\")");
db.ScriptEvaluate("redis.call(\"flushdb\")");
var th = new BlockingTaskHandler("1");
var th2 = new BlockingTaskHandler("2");
var complete = new ManualResetEvent(false);
var events = new List<string>();
var wh = new WorkflowHandler();
wh.WorkflowComplete += (s, w) => { events.Add("complete"); complete.Set(); };
var t1 = new TaskName("TestNode1");
var t2 = new TaskName("TestNode2");
var t3 = new TaskName("TestNode3");
var t4 = new TaskName("TestNode4");
var t5 = new TaskName("TestNode5");
var t6 = new TaskName("TestNode6");
var workflow = new Workflow(new WorkflowName("TestWorkflow"));
workflow.AddTask(t1, new Payload("Node1"), NoType, SimplePriority, EmptyTaskList, new[] { t2 });
workflow.AddTask(t2, new Payload("Node2"), NoType, SimplePriority, new[] { t1 }, new[] { t3, t4, t5, t6 });
workflow.AddTask(t3, new Payload("Node3"), NoType, SimplePriority, new[] { t2 }, EmptyTaskList);
workflow.AddTask(t4, new Payload("Node4"), NoType, SimplePriority, new[] { t2 }, EmptyTaskList);
workflow.AddTask(t5, new Payload("Node5"), NoType, SimplePriority, new[] { t2 }, EmptyTaskList);
workflow.AddTask(t6, new Payload("Node6"), NoType, SimplePriority, new[] { t2 }, EmptyTaskList);
using (var wm = new WorkflowManagement(_mux, th, wh, new WorkflowManagementId("test"), null, new Lua()))
{
wm.PushWorkflow(workflow);
// we've picked up the first task, and don't want to pick up any more
th.Gate.WaitOne();
Assert.AreEqual(0, db.ListLength("submitted"));
}
// create a new wm to simulate a restart of a component
using (var wm2 = new WorkflowManagement(_mux, th2, wh, new WorkflowManagementId("test"), null, new Lua()))
{
Assert.AreEqual(1, db.SortedSetLength("submitted"));
th.Abort.Set();
th2.LetRun.Set();
complete.WaitOne();
}
db.ScriptEvaluate("redis.call(\"flushdb\")");
}
public void CanReleaseAWorkflowWithTypedTasks()
{
var db = _mux.GetDatabase();
db.ScriptEvaluate("print(\"CanPauseAWorkflow\")");
db.ScriptEvaluate("redis.call(\"flushdb\")");
var th = new BlockingTaskHandler("1");
var complete = new ManualResetEvent(false);
var events = new List<string>();
var wh = new WorkflowHandler();
wh.WorkflowComplete += (s, w) => { events.Add("complete"); complete.Set(); };
var workflowName = "TestWorkflow";
var tasks = new List<Task>();
tasks.Add(new Task { Type = "testTaskType", Name = "TestNode1", Payload = "Node1", Parents = new string[] { }, Children = new string[] { "TestNode2" }, Workflow = workflowName });
tasks.Add(new Task { Type = "testTaskType", Name = "TestNode2", Payload = "Node2", Parents = new string[] { }, Children = new string[] { "TestNode3", "TestNode4", "TestNode5", "TestNode6" }, Workflow = workflowName });
tasks.Add(new Task { Type = "testTaskType", Name = "TestNode3", Payload = "Node3", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
tasks.Add(new Task { Type = "testTaskType", Name = "TestNode4", Payload = "Node4", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
tasks.Add(new Task { Type = "testTaskType", Name = "TestNode5", Payload = "Node5", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
tasks.Add(new Task { Type = "testTaskType", Name = "TestNode6", Payload = "Node6", Parents = new string[] { "TestNode2" }, Children = new string[] { }, Workflow = workflowName });
var workflow = new Workflow { Name = workflowName, Tasks = tasks };
using (var wm = new WorkflowManagement(_mux, th, wh, "test", new[] { "testTaskType" }, new Lua()))
{
var workflowId = wm.PushWorkflow(workflow);
th.Gate.WaitOne();
wm.PauseWorkflow(workflowId);
wm.ReleaseWorkflow(workflowId);
Assert.AreEqual(1, db.ListLength("submitted:testTaskType"));
Assert.AreEqual(1, db.SetLength("running"));
}
db.ScriptEvaluate("redis.call(\"flushdb\")");
}
public void CanPauseAWorkflow()
{
var db = _mux.GetDatabase();
db.ScriptEvaluate("print(\"CanPauseAWorkflow\")");
db.ScriptEvaluate("redis.call(\"flushdb\")");
var th = new BlockingTaskHandler("1");
var complete = new ManualResetEvent(false);
var events = new List<string>();
var wh = new WorkflowHandler();
wh.WorkflowComplete += (s, w) => { events.Add("complete"); complete.Set(); };
var t1 = new TaskName("TestNode1");
var t2 = new TaskName("TestNode2");
var t3 = new TaskName("TestNode3");
var t4 = new TaskName("TestNode4");
var t5 = new TaskName("TestNode5");
var t6 = new TaskName("TestNode6");
var type1 = new TaskType("testTaskType");
var workflow = new Workflow(new WorkflowName("TestWorkflow"));
workflow.AddTask(t1, new Payload("Node1"), NoType, SimplePriority, EmptyTaskList, new[] { t2 });
workflow.AddTask(t2, new Payload("Node2"), NoType, SimplePriority, EmptyTaskList, new[] { t3, t4, t5, t6 });
workflow.AddTask(t3, new Payload("Node3"), NoType, SimplePriority, new[] { t2 }, EmptyTaskList);
workflow.AddTask(t4, new Payload("Node4"), NoType, SimplePriority, new[] { t2 }, EmptyTaskList);
workflow.AddTask(t5, new Payload("Node5"), NoType, SimplePriority, new[] { t2 }, EmptyTaskList);
workflow.AddTask(t6, new Payload("Node6"), NoType, SimplePriority, new[] { t2 }, EmptyTaskList);
using (var wm = new WorkflowManagement(_mux, th, wh, new WorkflowManagementId("test"), null, new Lua()))
{
var workflowId = wm.PushWorkflow(workflow);
var waitResult = th.Gate.WaitOne(/*2000*/);
Assert.IsTrue(waitResult);
Assert.AreEqual(1, db.SortedSetLength("submitted"));
Assert.AreEqual(1, db.SetLength("running"));
wm.PauseWorkflow(workflowId);
var expected = new List<string> { "1", "2" };
var state = "paused";
CheckSetContent(db, expected, state);
// The running task will run bang into the new state
th.LetRun.Set();
Thread.Sleep(500); // gah, honestly. I won't get a signal because no new tasks should be submitted
expected = new List<string> { "2" };
state = "paused";
CheckSetContent(db, expected, state);
expected = new List<string> { "2" };
state = "running";
CheckSetContent(db, expected, state, false);
// If this is checked before the task has completed then there'll be two paused tasks
// We've got no hook into the completion event as yet
Assert.AreEqual(1, db.SetLength("paused"));
Assert.AreEqual(1, db.SetLength("paused:1"));
Assert.AreEqual(0, db.SortedSetLength("submitted"));
Assert.AreEqual(0, db.SetLength("running"));
}
db.ScriptEvaluate("redis.call(\"flushdb\")");
}
public void CanCleanUpAfterAFailedWorkflow()
{
var db = _mux.GetDatabase();
db.ScriptEvaluate("print(\"CanCleanUpAfterAFailedWorkflow\")");
db.ScriptEvaluate("redis.call(\"flushdb\")");
var th = new ErroringTestWithLongRunnerTaskHandler("Node4", "Node3");
var complete = new ManualResetEvent(false);
var failed = new ManualResetEvent(false);
var exception = new ManualResetEvent(false);
var events = new List <string>();
var wh = new WorkflowHandler();
wh.WorkflowComplete += (s, w) => { events.Add("complete"); complete.Set(); };
wh.WorkflowFailed += (s, w) => { events.Add("failed"); failed.Set(); };
EventHandler <Exception> eh = (s, e) => { events.Add(e.Message); exception.Set(); };
using (var wm = new WorkflowManagement(_mux, th, wh, new WorkflowManagementId("test"), eh))
{
var t1 = new TaskName("TestNode1");
var t2 = new TaskName("TestNode2");
var t3 = new TaskName("TestNode3");
var t4 = new TaskName("TestNode4");
var workflow = new Workflow(new WorkflowName("TestWorkflow"));
workflow.AddTask(t1, new Payload("Node1"), NoType, SimplePriority, EmptyTaskList, new [] { t2 });
workflow.AddTask(t2, new Payload("Node2"), NoType, SimplePriority, new [] { t1 }, new [] { t3, t4 });
workflow.AddTask(t3, new Payload("Node3"), NoType, SimplePriority, new [] { t2 }, EmptyTaskList);
workflow.AddTask(t4, new Payload("Node4"), NoType, SimplePriority, new [] { t2 }, EmptyTaskList);
var workflowId = wm.PushWorkflow(workflow);
var result = WaitHandle.WaitAny(new[] { exception, failed, complete }, 2000);
if (result == 0)
{
throw new Exception("Failed in workflow operation"); // in a real app, handler could add exception to a list to process
}
// In principle this is a failed workflow, as one of the tasks will fail
// However, if all tasks get started, then the succeeding leaf node finishes first, this will be marked successful
// Is a workflow considered complete when all tasks have started, or when all tasks have finished?
// CHoose latter.
Console.WriteLine("TaskHandler events"); foreach (var ev in th.Events)
{
Console.WriteLine("TH event: " + ev);
}
Console.WriteLine("WM events"); foreach (var ev in events)
{
Console.WriteLine("Event: " + ev);
}
Assert.AreEqual(1, result);
wm.CleanUp(workflowId.ToString());
}
// Should leave highwatermark id keys alone
db = _mux.GetDatabase();
for (var t = 0; t < 4; t++)
{
Assert.IsFalse(db.KeyExists("task:" + t));
Assert.IsFalse(db.KeyExists("parents-" + t));
Assert.IsFalse(db.KeyExists("children-" + t));
Assert.IsFalse(db.SetContains("tasks", t));
Assert.IsFalse(db.SetContains("submitted", t));
Assert.IsFalse(db.SetContains("complete", t));
Assert.IsFalse(db.SetContains("failed", t));
if (t == 3)
{
Assert.IsTrue(db.SetContains("abandoned", t));
db.SetRemove("abandoned", t);
}
else
{
Assert.IsFalse(db.SetContains("abandoned", t));
}
Assert.AreEqual(false, db.SetRemove("running", t));
}
Assert.AreEqual(0, db.ListRemove("workflowComplete", "1"));
Assert.AreEqual(0, db.ListRemove("workflowFailed", "1"));
Assert.IsFalse(db.KeyExists("workflow-tasks-1"));
Assert.IsFalse(db.KeyExists("workflow-remaining-1"));
Assert.IsFalse(db.SetContains("workflows", "1"));
}