neoq/backends/memory/memory_backend_test.go
2025-02-13 10:24:08 -07:00

429 lines
9.5 KiB
Go

package memory_test
import (
"context"
"fmt"
"log/slog"
"os"
"strconv"
"strings"
"sync"
"testing"
"time"
"github.com/acaloiaro/neoq"
"github.com/acaloiaro/neoq/backends/memory"
"github.com/acaloiaro/neoq/handler"
"github.com/acaloiaro/neoq/jobs"
"github.com/acaloiaro/neoq/logging"
"github.com/acaloiaro/neoq/testutils"
"github.com/pkg/errors"
"github.com/robfig/cron"
)
const (
queue = "testing"
)
var (
errPeriodicTimeout = errors.New("timed out waiting for periodic job")
errTimeout = errors.New("the test has timed out")
)
func ExampleNew() {
ctx := context.Background()
nq, err := neoq.New(ctx, neoq.WithBackend(memory.Backend))
if err != nil {
fmt.Println("initializing a new Neoq with no params should not return an error:", err)
return
}
defer nq.Shutdown(ctx)
fmt.Println("neoq initialized with default memory backend")
// Output: neoq initialized with default memory backend
}
// TestBasicJobProcessing tests that the memory backend is able to process the most basic jobs with the
// most basic configuration.
func TestBasicJobProcessing(t *testing.T) {
numJobs := 1000
doneCnt := 0
done := make(chan bool)
timeoutTimer := time.After(5 * time.Second)
ctx := context.TODO()
nq, err := neoq.New(ctx, neoq.WithBackend(memory.Backend))
if err != nil {
t.Fatal(err)
}
h := handler.New(queue, func(_ context.Context) (err error) {
done <- true
return
})
if err := nq.Start(ctx, h); err != nil {
t.Fatal(err)
}
go func() {
for i := 0; i < numJobs; i++ {
jid, e := nq.Enqueue(ctx, &jobs.Job{
Queue: queue,
Payload: map[string]interface{}{
"message": fmt.Sprintf("hello world: %d", i),
},
})
if e != nil || jid == jobs.DuplicateJobID {
slog.Error("job was not enqueued. either it was duplicate or this error caused it:", "error", e)
}
}
}()
for {
select {
case <-timeoutTimer:
err = jobs.ErrJobTimeout
case <-done:
doneCnt++
}
if doneCnt >= numJobs {
break
}
if err != nil {
break
}
}
if err != nil {
t.Error(err)
}
nq.Shutdown(ctx)
}
// TestBackendConfiguration tests that the memory backend receives and utilizes the MaxQueueCapacity handler
// configuration.
//
// This test works by enqueueing 3 jobs. Each job sleeps for longer than the test is willing to wait for the jobs to
// enqueue. The `done` channel is notified when all 3 jobs are enqueued.
//
// By serializing handler execution by initializing neoq with `handler.Concurrency(1)` and enqueueing jobs
// asynchronously, we can wait on `done` and a timeout channel to see which one completes first.
//
// Since the queue has a capacity of 1 and the handler is serialized, we know that `done` cannot be notified until job 1
// is complete, job 2 is processing, and job 3 can be added to the queue.
//
// If `done` is notified before the timeout channel, this test would fail, because that would mean Enqueue() is not
// blocking while the first Sleep()ing job is running. If the qeueue is blocking when it meets its capacity, we know
// that the max queue capacity configuration has taken effect.
func TestBackendConfiguration(t *testing.T) {
numJobs := 3
timeout := false
done := make(chan bool)
ctx := context.TODO()
nq, err := neoq.New(ctx, neoq.WithBackend(memory.Backend))
if err != nil {
t.Fatal(err)
}
h := handler.New(queue, func(_ context.Context) (err error) {
time.Sleep(100 * time.Millisecond)
return
}, handler.Concurrency(1), handler.MaxQueueCapacity(1))
if err := nq.Start(ctx, h); err != nil {
t.Fatal(err)
}
go func() {
for i := 0; i < numJobs; i++ {
jid, e := nq.Enqueue(ctx, &jobs.Job{
Queue: queue,
Payload: map[string]interface{}{
"message": fmt.Sprintf("hello world: %d", i),
},
})
if e != nil || jid == jobs.DuplicateJobID {
slog.Error("job was not enqueued. either it was duplicate or this error caused it:", "error", e)
}
}
done <- true
}()
select {
case <-time.After(time.Duration(50) * time.Millisecond):
timeout = true
case <-done:
err = errors.New("this job should have timed out")
}
if !timeout {
t.Error(err)
}
nq.Shutdown(ctx)
}
var testFutureJobs = &sync.Map{}
func TestFutureJobScheduling(t *testing.T) {
ctx := context.Background()
testBackend := memory.TestingBackend(
neoq.NewConfig(),
cron.New(),
&sync.Map{},
&sync.Map{},
testFutureJobs,
&sync.Map{},
slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{Level: logging.LogLevelDebug})))
nq, err := neoq.New(ctx, neoq.WithBackend(testBackend))
if err != nil {
t.Fatal(err)
}
defer nq.Shutdown(ctx)
h := handler.New(queue, func(ctx context.Context) (err error) {
return
})
if err := nq.Start(ctx, h); err != nil {
t.Fatal(err)
}
jid, err := nq.Enqueue(ctx, &jobs.Job{
Queue: queue,
Payload: map[string]interface{}{
"message": "hello world",
},
RunAfter: time.Now().UTC().Add(5 * time.Second),
})
if err != nil || jid == jobs.DuplicateJobID {
err = fmt.Errorf("job was not enqueued. either it was duplicate or this error caused it: %w", err)
t.Error(err)
}
jobID, _ := strconv.ParseInt(jid, 0, 64)
var ok bool
if _, ok = testFutureJobs.Load(jobID); !ok {
t.Error(err)
}
}
// This test was added in response to the following issue: https://github.com/acaloiaro/neoq/issues/56
// nolint: gocognit, gocyclo
func TestFutureJobSchedulingMultipleQueues(t *testing.T) {
ctx := context.Background()
nq, err := neoq.New(ctx, neoq.WithBackend(memory.Backend))
if err != nil {
t.Fatal(err)
}
defer nq.Shutdown(ctx)
jobsPerQueueCount := 100
jobsProcessed1 := 0
jobsProcessed2 := 0
q1 := "queue1"
q2 := "queue2"
done1 := make(chan bool)
done2 := make(chan bool)
h1 := handler.New(q1, func(ctx context.Context) (err error) {
var j *jobs.Job
j, err = jobs.FromContext(ctx)
if err != nil {
return
}
if j.Queue != q1 {
err = errors.New("handling job from queu2 with queue1 handler. this is a bug")
}
done1 <- true
return
})
h2 := handler.New(q2, func(ctx context.Context) (err error) {
var j *jobs.Job
j, err = jobs.FromContext(ctx)
if err != nil {
return
}
if j.Queue != q2 {
err = errors.New("handling job from queue1 with queue2 handler. this is a bug")
}
done2 <- true
return
})
if err := nq.Start(ctx, h1); err != nil {
t.Fatal(err)
}
if err := nq.Start(ctx, h2); err != nil {
t.Fatal(err)
}
go func() {
for i := 1; i <= jobsPerQueueCount; i++ {
_, err = nq.Enqueue(ctx, &jobs.Job{
ID: int64(i),
Queue: q1,
Payload: map[string]interface{}{"ID": i},
RunAfter: time.Now().Add(1 * time.Millisecond),
})
if err != nil {
err = fmt.Errorf("job was not enqueued. either it was duplicate or this error caused it: %w", err)
t.Error(err)
}
}
for j := 1; j <= jobsPerQueueCount; j++ {
_, err = nq.Enqueue(ctx, &jobs.Job{
ID: int64(j),
Queue: q2,
Payload: map[string]interface{}{"ID": j},
RunAfter: time.Now().Add(1 * time.Millisecond),
})
if err != nil {
err = fmt.Errorf("job was not enqueued. either it was duplicate or this error caused it: %w", err)
t.Error(err)
}
}
}()
timeoutTimer := time.After(10 * time.Second)
results_loop:
for {
select {
case <-timeoutTimer:
err = jobs.ErrJobTimeout
break results_loop
case <-done1:
jobsProcessed1++
case <-done2:
jobsProcessed2++
default:
if jobsProcessed1 == jobsPerQueueCount && jobsProcessed2 == jobsPerQueueCount {
break results_loop
}
time.Sleep(10 * time.Millisecond)
}
}
if err != nil {
t.Error(err)
}
if jobsProcessed1 != jobsPerQueueCount {
// nolint: goerr113
t.Error(fmt.Errorf("handler1 should have handled %d jobs, but handled %d", jobsPerQueueCount, jobsProcessed1))
}
if jobsProcessed2 != jobsPerQueueCount {
// nolint: goerr113
t.Error(fmt.Errorf("handler2 should have handled %d jobs, but handled %d", jobsPerQueueCount, jobsProcessed2))
}
}
func TestCron(t *testing.T) {
const cronSpec = "* * * * * *"
ctx := context.TODO()
nq, err := neoq.New(ctx, neoq.WithBackend(memory.Backend))
if err != nil {
t.Fatal(err)
}
defer nq.Shutdown(ctx)
done := make(chan bool)
h := handler.New("foobar", func(ctx context.Context) (err error) {
done <- true
return
})
h.WithOptions(
handler.JobTimeout(500*time.Millisecond),
handler.Concurrency(1),
)
err = nq.StartCron(ctx, cronSpec, h)
if err != nil {
t.Error(err)
}
// allow time for listener to start
time.Sleep(5 * time.Millisecond)
select {
case <-time.After(1 * time.Second):
err = errPeriodicTimeout
case <-done:
}
if err != nil {
t.Error(err)
}
}
func TestMaxRetries(t *testing.T) {
const queue = "foobar"
maxRetries := 0
ctx := context.Background()
nq, err := neoq.New(ctx, neoq.WithBackend(memory.Backend), neoq.WithLogLevel(logging.LogLevelDebug))
if err != nil {
t.Fatal(err)
}
defer nq.Shutdown(ctx)
logChan := make(chan string, 1)
nq.SetLogger(testutils.NewTestLogger(logChan))
h := handler.New(queue, func(ctx context.Context) (err error) {
panic("i refuse success!")
})
err = nq.Start(ctx, h)
if err != nil {
t.Error(err)
}
// allow time for listener to start
time.Sleep(5 * time.Millisecond)
_, err = nq.Enqueue(ctx, &jobs.Job{
Queue: queue,
Payload: map[string]any{},
MaxRetries: &maxRetries,
})
if err != nil {
t.Error(err)
}
timeoutTimer := time.After(5 * time.Second)
result_loop:
for {
select {
case <-timeoutTimer:
err = errTimeout
break result_loop
case newLog := <-logChan:
if strings.Contains(newLog, "job exceeded max retries") {
break result_loop
}
}
}
if err != nil {
t.Error(err)
}
}