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Extract out log package

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This commit is contained in:
Ken Hibino 2020-03-09 07:11:16 -07:00
parent a425f54d23
commit d664d68fa4
15 changed files with 127 additions and 96 deletions
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4
asynq_test.go
View File

@ -5,12 +5,14 @@
package asynq
import (
"os"
"sort"
"testing"
"github.com/go-redis/redis/v7"
"github.com/google/go-cmp/cmp"
h "github.com/hibiken/asynq/internal/asynqtest"
"github.com/hibiken/asynq/internal/log"
)
// This file defines test helper functions used by
@ -22,6 +24,8 @@ const (
redisDB = 14
)
var testLogger = log.NewLogger(os.Stderr)
func setup(tb testing.TB) *redis.Client {
tb.Helper()
r := redis.NewClient(&redis.Options{

27
background.go
View File

@ -16,6 +16,7 @@ import (
"time"
"github.com/hibiken/asynq/internal/base"
"github.com/hibiken/asynq/internal/log"
"github.com/hibiken/asynq/internal/rdb"
)
@ -39,6 +40,8 @@ type Background struct {
// wait group to wait for all goroutines to finish.
wg sync.WaitGroup
logger *log.Logger
rdb *rdb.RDB
scheduler *scheduler
processor *processor
@ -158,16 +161,18 @@ func NewBackground(r RedisConnOpt, cfg *Config) *Background {
}
pid := os.Getpid()
logger := log.NewLogger(os.Stderr)
rdb := rdb.NewRDB(createRedisClient(r))
ps := base.NewProcessState(host, pid, n, queues, cfg.StrictPriority)
syncCh := make(chan *syncRequest)
cancels := base.NewCancelations()
syncer := newSyncer(syncCh, 5*time.Second)
heartbeater := newHeartbeater(rdb, ps, 5*time.Second)
scheduler := newScheduler(rdb, 5*time.Second, queues)
processor := newProcessor(rdb, ps, delayFunc, syncCh, cancels, cfg.ErrorHandler)
subscriber := newSubscriber(rdb, cancels)
syncer := newSyncer(logger, syncCh, 5*time.Second)
heartbeater := newHeartbeater(logger, rdb, ps, 5*time.Second)
scheduler := newScheduler(logger, rdb, 5*time.Second, queues)
processor := newProcessor(logger, rdb, ps, delayFunc, syncCh, cancels, cfg.ErrorHandler)
subscriber := newSubscriber(logger, rdb, cancels)
return &Background{
logger: logger,
rdb: rdb,
ps: ps,
scheduler: scheduler,
@ -205,14 +210,14 @@ func (fn HandlerFunc) ProcessTask(ctx context.Context, task *Task) error {
// a signal, it gracefully shuts down all pending workers and other
// goroutines to process the tasks.
func (bg *Background) Run(handler Handler) {
logger.SetPrefix(fmt.Sprintf("asynq: pid=%d ", os.Getpid()))
logger.info("Starting processing")
bg.logger.SetPrefix(fmt.Sprintf("asynq: pid=%d ", os.Getpid()))
bg.logger.Info("Starting processing")
bg.start(handler)
defer bg.stop()
logger.info("Send signal TSTP to stop processing new tasks")
logger.info("Send signal TERM or INT to terminate the process")
bg.logger.Info("Send signal TSTP to stop processing new tasks")
bg.logger.Info("Send signal TERM or INT to terminate the process")
// Wait for a signal to terminate.
sigs := make(chan os.Signal, 1)
@ -227,7 +232,7 @@ func (bg *Background) Run(handler Handler) {
break
}
fmt.Println()
logger.info("Starting graceful shutdown")
bg.logger.Info("Starting graceful shutdown")
}
// starts the background-task processing.
@ -271,5 +276,5 @@ func (bg *Background) stop() {
bg.rdb.Close()
bg.running = false
logger.info("Bye!")
bg.logger.Info("Bye!")
}

13
heartbeat.go
View File

@ -9,13 +9,15 @@ import (
"time"
"github.com/hibiken/asynq/internal/base"
"github.com/hibiken/asynq/internal/log"
"github.com/hibiken/asynq/internal/rdb"
)
// heartbeater is responsible for writing process info to redis periodically to
// indicate that the background worker process is up.
type heartbeater struct {
rdb *rdb.RDB
logger *log.Logger
rdb *rdb.RDB
ps *base.ProcessState
@ -26,8 +28,9 @@ type heartbeater struct {
interval time.Duration
}
func newHeartbeater(rdb *rdb.RDB, ps *base.ProcessState, interval time.Duration) *heartbeater {
func newHeartbeater(l *log.Logger, rdb *rdb.RDB, ps *base.ProcessState, interval time.Duration) *heartbeater {
return &heartbeater{
logger: l,
rdb: rdb,
ps: ps,
done: make(chan struct{}),
@ -36,7 +39,7 @@ func newHeartbeater(rdb *rdb.RDB, ps *base.ProcessState, interval time.Duration)
}
func (h *heartbeater) terminate() {
logger.info("Heartbeater shutting down...")
h.logger.Info("Heartbeater shutting down...")
// Signal the heartbeater goroutine to stop.
h.done <- struct{}{}
}
@ -52,7 +55,7 @@ func (h *heartbeater) start(wg *sync.WaitGroup) {
select {
case <-h.done:
h.rdb.ClearProcessState(h.ps)
logger.info("Heartbeater done")
h.logger.Info("Heartbeater done")
return
case <-time.After(h.interval):
h.beat()
@ -66,6 +69,6 @@ func (h *heartbeater) beat() {
// and short enough to expire quickly once the process is shut down or killed.
err := h.rdb.WriteProcessState(h.ps, h.interval*2)
if err != nil {
logger.error("could not write heartbeat data: %v", err)
h.logger.Error("could not write heartbeat data: %v", err)
}
}

2
heartbeat_test.go
View File

@ -36,7 +36,7 @@ func TestHeartbeater(t *testing.T) {
h.FlushDB(t, r)
state := base.NewProcessState(tc.host, tc.pid, tc.concurrency, tc.queues, false)
hb := newHeartbeater(rdbClient, state, tc.interval)
hb := newHeartbeater(testLogger, rdbClient, state, tc.interval)
var wg sync.WaitGroup
hb.start(&wg)

36
internal/log/log.go Normal file
View File

@ -0,0 +1,36 @@
// Copyright 2020 Kentaro Hibino. All rights reserved.
// Use of this source code is governed by a MIT license
// that can be found in the LICENSE file.
// Package log exports logging related types and functions.
package log
import (
"io"
stdlog "log"
)
func NewLogger(out io.Writer) *Logger {
return &Logger{
stdlog.New(out, "", stdlog.Ldate|stdlog.Ltime|stdlog.Lmicroseconds|stdlog.LUTC),
}
}
type Logger struct {
*stdlog.Logger
}
func (l *Logger) Info(format string, args ...interface{}) {
format = "INFO: " + format
l.Printf(format, args...)
}
func (l *Logger) Warn(format string, args ...interface{}) {
format = "WARN: " + format
l.Printf(format, args...)
}
func (l *Logger) Error(format string, args ...interface{}) {
format = "ERROR: " + format
l.Printf(format, args...)
}

18
logger_test.go → internal/log/log_test.go
View File

@ -1,4 +1,8 @@
package asynq
// Copyright 2020 Kentaro Hibino. All rights reserved.
// Use of this source code is governed by a MIT license
// that can be found in the LICENSE file.
package log
import (
"bytes"
@ -36,9 +40,9 @@ func TestLoggerInfo(t *testing.T) {
for _, tc := range tests {
var buf bytes.Buffer
logger := newLogger(&buf)
logger := NewLogger(&buf)
logger.info(tc.message)
logger.Info(tc.message)
got := buf.String()
matched, err := regexp.MatchString(tc.wantPattern, got)
@ -68,9 +72,9 @@ func TestLoggerWarn(t *testing.T) {
for _, tc := range tests {
var buf bytes.Buffer
logger := newLogger(&buf)
logger := NewLogger(&buf)
logger.warn(tc.message)
logger.Warn(tc.message)
got := buf.String()
matched, err := regexp.MatchString(tc.wantPattern, got)
@ -100,9 +104,9 @@ func TestLoggerError(t *testing.T) {
for _, tc := range tests {
var buf bytes.Buffer
logger := newLogger(&buf)
logger := NewLogger(&buf)
logger.error(tc.message)
logger.Error(tc.message)
got := buf.String()
matched, err := regexp.MatchString(tc.wantPattern, got)

35
logger.go
View File

@ -1,35 +0,0 @@
package asynq
import (
"io"
"log"
"os"
)
// global logger used in asynq package.
var logger = newLogger(os.Stderr)
func newLogger(out io.Writer) *asynqLogger {
return &asynqLogger{
log.New(out, "", log.Ldate|log.Ltime|log.Lmicroseconds|log.LUTC),
}
}
type asynqLogger struct {
*log.Logger
}
func (l *asynqLogger) info(format string, args ...interface{}) {
format = "INFO: " + format
l.Printf(format, args...)
}
func (l *asynqLogger) warn(format string, args ...interface{}) {
format = "WARN: " + format
l.Printf(format, args...)
}
func (l *asynqLogger) error(format string, args ...interface{}) {
format = "ERROR: " + format
l.Printf(format, args...)
}

33
processor.go
View File

@ -13,12 +13,14 @@ import (
"time"
"github.com/hibiken/asynq/internal/base"
"github.com/hibiken/asynq/internal/log"
"github.com/hibiken/asynq/internal/rdb"
"golang.org/x/time/rate"
)
type processor struct {
rdb *rdb.RDB
logger *log.Logger
rdb *rdb.RDB
ps *base.ProcessState
@ -61,7 +63,7 @@ type processor struct {
type retryDelayFunc func(n int, err error, task *Task) time.Duration
// newProcessor constructs a new processor.
func newProcessor(r *rdb.RDB, ps *base.ProcessState, fn retryDelayFunc,
func newProcessor(l *log.Logger, r *rdb.RDB, ps *base.ProcessState, fn retryDelayFunc,
syncCh chan<- *syncRequest, c *base.Cancelations, errHandler ErrorHandler) *processor {
info := ps.Get()
qcfg := normalizeQueueCfg(info.Queues)
@ -70,6 +72,7 @@ func newProcessor(r *rdb.RDB, ps *base.ProcessState, fn retryDelayFunc,
orderedQueues = sortByPriority(qcfg)
}
return &processor{
logger: l,
rdb: r,
ps: ps,
queueConfig: qcfg,
@ -91,7 +94,7 @@ func newProcessor(r *rdb.RDB, ps *base.ProcessState, fn retryDelayFunc,
// It's safe to call this method multiple times.
func (p *processor) stop() {
p.once.Do(func() {
logger.info("Processor shutting down...")
p.logger.Info("Processor shutting down...")
// Unblock if processor is waiting for sema token.
close(p.abort)
// Signal the processor goroutine to stop processing tasks
@ -107,7 +110,7 @@ func (p *processor) terminate() {
// IDEA: Allow user to customize this timeout value.
const timeout = 8 * time.Second
time.AfterFunc(timeout, func() { close(p.quit) })
logger.info("Waiting for all workers to finish...")
p.logger.Info("Waiting for all workers to finish...")
// send cancellation signal to all in-progress task handlers
for _, cancel := range p.cancelations.GetAll() {
@ -118,7 +121,7 @@ func (p *processor) terminate() {
for i := 0; i < cap(p.sema); i++ {
p.sema <- struct{}{}
}
logger.info("All workers have finished")
p.logger.Info("All workers have finished")
p.restore() // move any unfinished tasks back to the queue.
}
@ -132,7 +135,7 @@ func (p *processor) start(wg *sync.WaitGroup) {
for {
select {
case <-p.done:
logger.info("Processor done")
p.logger.Info("Processor done")
return
default:
p.exec()
@ -158,7 +161,7 @@ func (p *processor) exec() {
}
if err != nil {
if p.errLogLimiter.Allow() {
logger.error("Dequeue error: %v", err)
p.logger.Error("Dequeue error: %v", err)
}
return
}
@ -188,7 +191,7 @@ func (p *processor) exec() {
select {
case <-p.quit:
// time is up, quit this worker goroutine.
logger.warn("Quitting worker. task id=%s", msg.ID)
p.logger.Warn("Quitting worker. task id=%s", msg.ID)
return
case resErr := <-resCh:
// Note: One of three things should happen.
@ -217,17 +220,17 @@ func (p *processor) exec() {
func (p *processor) restore() {
n, err := p.rdb.RequeueAll()
if err != nil {
logger.error("Could not restore unfinished tasks: %v", err)
p.logger.Error("Could not restore unfinished tasks: %v", err)
}
if n > 0 {
logger.info("Restored %d unfinished tasks back to queue", n)
p.logger.Info("Restored %d unfinished tasks back to queue", n)
}
}
func (p *processor) requeue(msg *base.TaskMessage) {
err := p.rdb.Requeue(msg)
if err != nil {
logger.error("Could not push task id=%s back to queue: %v", msg.ID, err)
p.logger.Error("Could not push task id=%s back to queue: %v", msg.ID, err)
}
}
@ -235,7 +238,7 @@ func (p *processor) markAsDone(msg *base.TaskMessage) {
err := p.rdb.Done(msg)
if err != nil {
errMsg := fmt.Sprintf("Could not remove task id=%s from %q", msg.ID, base.InProgressQueue)
logger.warn("%s; Will retry syncing", errMsg)
p.logger.Warn("%s; Will retry syncing", errMsg)
p.syncRequestCh <- &syncRequest{
fn: func() error {
return p.rdb.Done(msg)
@ -251,7 +254,7 @@ func (p *processor) retry(msg *base.TaskMessage, e error) {
err := p.rdb.Retry(msg, retryAt, e.Error())
if err != nil {
errMsg := fmt.Sprintf("Could not move task id=%s from %q to %q", msg.ID, base.InProgressQueue, base.RetryQueue)
logger.warn("%s; Will retry syncing", errMsg)
p.logger.Warn("%s; Will retry syncing", errMsg)
p.syncRequestCh <- &syncRequest{
fn: func() error {
return p.rdb.Retry(msg, retryAt, e.Error())
@ -262,11 +265,11 @@ func (p *processor) retry(msg *base.TaskMessage, e error) {
}
func (p *processor) kill(msg *base.TaskMessage, e error) {
logger.warn("Retry exhausted for task id=%s", msg.ID)
p.logger.Warn("Retry exhausted for task id=%s", msg.ID)
err := p.rdb.Kill(msg, e.Error())
if err != nil {
errMsg := fmt.Sprintf("Could not move task id=%s from %q to %q", msg.ID, base.InProgressQueue, base.DeadQueue)
logger.warn("%s; Will retry syncing", errMsg)
p.logger.Warn("%s; Will retry syncing", errMsg)
p.syncRequestCh <- &syncRequest{
fn: func() error {
return p.rdb.Kill(msg, e.Error())

8
processor_test.go
View File

@ -69,7 +69,7 @@ func TestProcessorSuccess(t *testing.T) {
}
ps := base.NewProcessState("localhost", 1234, 10, defaultQueueConfig, false)
cancelations := base.NewCancelations()
p := newProcessor(rdbClient, ps, defaultDelayFunc, nil, cancelations, nil)
p := newProcessor(testLogger, rdbClient, ps, defaultDelayFunc, nil, cancelations, nil)
p.handler = HandlerFunc(handler)
var wg sync.WaitGroup
@ -167,7 +167,7 @@ func TestProcessorRetry(t *testing.T) {
}
ps := base.NewProcessState("localhost", 1234, 10, defaultQueueConfig, false)
cancelations := base.NewCancelations()
p := newProcessor(rdbClient, ps, delayFunc, nil, cancelations, ErrorHandlerFunc(errHandler))
p := newProcessor(testLogger, rdbClient, ps, delayFunc, nil, cancelations, ErrorHandlerFunc(errHandler))
p.handler = tc.handler
var wg sync.WaitGroup
@ -233,7 +233,7 @@ func TestProcessorQueues(t *testing.T) {
for _, tc := range tests {
cancelations := base.NewCancelations()
ps := base.NewProcessState("localhost", 1234, 10, tc.queueCfg, false)
p := newProcessor(nil, ps, defaultDelayFunc, nil, cancelations, nil)
p := newProcessor(testLogger, nil, ps, defaultDelayFunc, nil, cancelations, nil)
got := p.queues()
if diff := cmp.Diff(tc.want, got, sortOpt); diff != "" {
t.Errorf("with queue config: %v\n(*processor).queues() = %v, want %v\n(-want,+got):\n%s",
@ -301,7 +301,7 @@ func TestProcessorWithStrictPriority(t *testing.T) {
// Note: Set concurrency to 1 to make sure tasks are processed one at a time.
cancelations := base.NewCancelations()
ps := base.NewProcessState("localhost", 1234, 1 /* concurrency */, queueCfg, true /*strict*/)
p := newProcessor(rdbClient, ps, defaultDelayFunc, nil, cancelations, nil)
p := newProcessor(testLogger, rdbClient, ps, defaultDelayFunc, nil, cancelations, nil)
p.handler = HandlerFunc(handler)
var wg sync.WaitGroup

13
scheduler.go
View File

@ -8,11 +8,13 @@ import (
"sync"
"time"
"github.com/hibiken/asynq/internal/log"
"github.com/hibiken/asynq/internal/rdb"
)
type scheduler struct {
rdb *rdb.RDB
logger *log.Logger
rdb *rdb.RDB
// channel to communicate back to the long running "scheduler" goroutine.
done chan struct{}
@ -24,12 +26,13 @@ type scheduler struct {
qnames []string
}
func newScheduler(r *rdb.RDB, avgInterval time.Duration, qcfg map[string]int) *scheduler {
func newScheduler(l *log.Logger, r *rdb.RDB, avgInterval time.Duration, qcfg map[string]int) *scheduler {
var qnames []string
for q := range qcfg {
qnames = append(qnames, q)
}
return &scheduler{
logger: l,
rdb: r,
done: make(chan struct{}),
avgInterval: avgInterval,
@ -38,7 +41,7 @@ func newScheduler(r *rdb.RDB, avgInterval time.Duration, qcfg map[string]int) *s
}
func (s *scheduler) terminate() {
logger.info("Scheduler shutting down...")
s.logger.Info("Scheduler shutting down...")
// Signal the scheduler goroutine to stop polling.
s.done <- struct{}{}
}
@ -51,7 +54,7 @@ func (s *scheduler) start(wg *sync.WaitGroup) {
for {
select {
case <-s.done:
logger.info("Scheduler done")
s.logger.Info("Scheduler done")
return
case <-time.After(s.avgInterval):
s.exec()
@ -62,6 +65,6 @@ func (s *scheduler) start(wg *sync.WaitGroup) {
func (s *scheduler) exec() {
if err := s.rdb.CheckAndEnqueue(s.qnames...); err != nil {
logger.error("Could not enqueue scheduled tasks: %v", err)
s.logger.Error("Could not enqueue scheduled tasks: %v", err)
}
}

2
scheduler_test.go
View File

@ -19,7 +19,7 @@ func TestScheduler(t *testing.T) {
r := setup(t)
rdbClient := rdb.NewRDB(r)
const pollInterval = time.Second
s := newScheduler(rdbClient, pollInterval, defaultQueueConfig)
s := newScheduler(testLogger, rdbClient, pollInterval, defaultQueueConfig)
t1 := h.NewTaskMessage("gen_thumbnail", nil)
t2 := h.NewTaskMessage("send_email", nil)
t3 := h.NewTaskMessage("reindex", nil)

13
subscriber.go
View File

@ -8,11 +8,13 @@ import (
"sync"
"github.com/hibiken/asynq/internal/base"
"github.com/hibiken/asynq/internal/log"
"github.com/hibiken/asynq/internal/rdb"
)
type subscriber struct {
rdb *rdb.RDB
logger *log.Logger
rdb *rdb.RDB
// channel to communicate back to the long running "subscriber" goroutine.
done chan struct{}
@ -21,8 +23,9 @@ type subscriber struct {
cancelations *base.Cancelations
}
func newSubscriber(rdb *rdb.RDB, cancelations *base.Cancelations) *subscriber {
func newSubscriber(l *log.Logger, rdb *rdb.RDB, cancelations *base.Cancelations) *subscriber {
return &subscriber{
logger: l,
rdb: rdb,
done: make(chan struct{}),
cancelations: cancelations,
@ -30,7 +33,7 @@ func newSubscriber(rdb *rdb.RDB, cancelations *base.Cancelations) *subscriber {
}
func (s *subscriber) terminate() {
logger.info("Subscriber shutting down...")
s.logger.Info("Subscriber shutting down...")
// Signal the subscriber goroutine to stop.
s.done <- struct{}{}
}
@ -39,7 +42,7 @@ func (s *subscriber) start(wg *sync.WaitGroup) {
pubsub, err := s.rdb.CancelationPubSub()
cancelCh := pubsub.Channel()
if err != nil {
logger.error("cannot subscribe to cancelation channel: %v", err)
s.logger.Error("cannot subscribe to cancelation channel: %v", err)
return
}
wg.Add(1)
@ -49,7 +52,7 @@ func (s *subscriber) start(wg *sync.WaitGroup) {
select {
case <-s.done:
pubsub.Close()
logger.info("Subscriber done")
s.logger.Info("Subscriber done")
return
case msg := <-cancelCh:
cancel, ok := s.cancelations.Get(msg.Payload)

2
subscriber_test.go
View File

@ -37,7 +37,7 @@ func TestSubscriber(t *testing.T) {
cancelations := base.NewCancelations()
cancelations.Add(tc.registeredID, fakeCancelFunc)
subscriber := newSubscriber(rdbClient, cancelations)
subscriber := newSubscriber(testLogger, rdbClient, cancelations)
var wg sync.WaitGroup
subscriber.start(&wg)

13
syncer.go
View File

@ -7,11 +7,15 @@ package asynq
import (
"sync"
"time"
"github.com/hibiken/asynq/internal/log"
)
// syncer is responsible for queuing up failed requests to redis and retry
// those requests to sync state between the background process and redis.
type syncer struct {
logger *log.Logger
requestsCh <-chan *syncRequest
// channel to communicate back to the long running "syncer" goroutine.
@ -26,8 +30,9 @@ type syncRequest struct {
errMsg string // error message
}
func newSyncer(requestsCh <-chan *syncRequest, interval time.Duration) *syncer {
func newSyncer(l *log.Logger, requestsCh <-chan *syncRequest, interval time.Duration) *syncer {
return &syncer{
logger: l,
requestsCh: requestsCh,
done: make(chan struct{}),
interval: interval,
@ -35,7 +40,7 @@ func newSyncer(requestsCh <-chan *syncRequest, interval time.Duration) *syncer {
}
func (s *syncer) terminate() {
logger.info("Syncer shutting down...")
s.logger.Info("Syncer shutting down...")
// Signal the syncer goroutine to stop.
s.done <- struct{}{}
}
@ -51,10 +56,10 @@ func (s *syncer) start(wg *sync.WaitGroup) {
// Try sync one last time before shutting down.
for _, req := range requests {
if err := req.fn(); err != nil {
logger.error(req.errMsg)
s.logger.Error(req.errMsg)
}
}
logger.info("Syncer done")
s.logger.Info("Syncer done")
return
case req := <-s.requestsCh:
requests = append(requests, req)

4
syncer_test.go
View File

@ -27,7 +27,7 @@ func TestSyncer(t *testing.T) {
const interval = time.Second
syncRequestCh := make(chan *syncRequest)
syncer := newSyncer(syncRequestCh, interval)
syncer := newSyncer(testLogger, syncRequestCh, interval)
var wg sync.WaitGroup
syncer.start(&wg)
defer syncer.terminate()
@ -52,7 +52,7 @@ func TestSyncer(t *testing.T) {
func TestSyncerRetry(t *testing.T) {
const interval = time.Second
syncRequestCh := make(chan *syncRequest)
syncer := newSyncer(syncRequestCh, interval)
syncer := newSyncer(testLogger, syncRequestCh, interval)
var wg sync.WaitGroup
syncer.start(&wg)