func TestNewChain(t *testing.T) {
task1 := signatures.TaskSignature{
Name: "foo",
Args: []signatures.TaskArg{
{
Type: "float64",
Value: interface{}(1),
},
{
Type: "float64",
Value: interface{}(1),
},
},
}
task2 := signatures.TaskSignature{
Name: "bar",
Args: []signatures.TaskArg{
{
Type: "float64",
Value: interface{}(5),
},
{
Type: "float64",
Value: interface{}(6),
},
},
}
task3 := signatures.TaskSignature{
Name: "qux",
Args: []signatures.TaskArg{
{
Type: "float64",
Value: interface{}(4),
},
},
}
chain := machinery.NewChain(&task1, &task2, &task3)
firstTask := chain.Tasks[0]
assert.Equal(t, "foo", firstTask.Name)
assert.Equal(t, "bar", firstTask.OnSuccess[0].Name)
assert.Equal(t, "qux", firstTask.OnSuccess[0].OnSuccess[0].Name)
}
func _testSendChain(server *machinery.Server, t *testing.T) {
tasks := _getTasks()
chain := machinery.NewChain(&tasks[1], &tasks[2], &tasks[3])
chainAsyncResult, err := server.SendChain(chain)
if err != nil {
t.Error(err)
}
result, err := chainAsyncResult.Get()
if err != nil {
t.Error(err)
}
if result.Interface() != int64(60) {
t.Errorf(
"result = %v(%v), want int64(60)",
result.Type().String(),
result.Interface(),
)
}
}
func main() {
/*
* First, let's try sending a single task
*/
initTasks()
fmt.Println("Single task:")
asyncResult, err := server.SendTask(&task0)
errors.Fail(err, "Could not send task")
result, err := asyncResult.Get()
errors.Fail(err, "Getting task state failed with error")
fmt.Printf("1 + 1 = %v\n", result.Interface())
/*
* Now let's explore ways of sending multiple tasks
*/
// Now let's try a parallel execution
initTasks()
fmt.Println("Group of tasks (parallel execution):")
group := machinery.NewGroup(&task0, &task1, &task2)
asyncResults, err := server.SendGroup(group)
errors.Fail(err, "Could not send group")
for _, asyncResult := range asyncResults {
result, err = asyncResult.Get()
errors.Fail(err, "Getting task state failed with error")
fmt.Printf(
"%v + %v = %v\n",
asyncResult.Signature.Args[0].Value,
asyncResult.Signature.Args[1].Value,
result.Interface(),
)
}
// Now let's try a group with a chord
initTasks()
fmt.Println("Group of tasks with a callback (chord):")
group = machinery.NewGroup(&task0, &task1, &task2)
chord := machinery.NewChord(group, &task4)
chordAsyncResult, err := server.SendChord(chord)
errors.Fail(err, "Could not send chord")
result, err = chordAsyncResult.Get()
errors.Fail(err, "Getting task state failed with error")
fmt.Printf("(1 + 1) * (2 + 2) * (5 + 6) = %v\n", result.Interface())
// Now let's try chaining task results
initTasks()
fmt.Println("Chain of tasks:")
chain := machinery.NewChain(&task0, &task1, &task2, &task3)
chainAsyncResult, err := server.SendChain(chain)
errors.Fail(err, "Could not send chain")
result, err = chainAsyncResult.Get()
errors.Fail(err, "Getting chain result failed with error")
fmt.Printf("(((1 + 1) + (2 + 2)) + (5 + 6)) * 4 = %v\n", result.Interface())
}