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asynq/heartbeat_test.go
2020-05-31 06:41:19 -07:00

153 lines
3.8 KiB
Go

// 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 asynq
import (
"sync"
"testing"
"time"
"github.com/google/go-cmp/cmp"
"github.com/google/go-cmp/cmp/cmpopts"
h "github.com/hibiken/asynq/internal/asynqtest"
"github.com/hibiken/asynq/internal/base"
"github.com/hibiken/asynq/internal/rdb"
"github.com/hibiken/asynq/internal/testbroker"
)
func TestHeartbeater(t *testing.T) {
r := setup(t)
rdbClient := rdb.NewRDB(r)
tests := []struct {
interval time.Duration
host string
pid int
queues map[string]int
concurrency int
}{
{time.Second, "localhost", 45678, map[string]int{"default": 1}, 10},
}
timeCmpOpt := cmpopts.EquateApproxTime(10 * time.Millisecond)
ignoreOpt := cmpopts.IgnoreUnexported(base.ServerInfo{})
ignoreFieldOpt := cmpopts.IgnoreFields(base.ServerInfo{}, "ServerID")
for _, tc := range tests {
h.FlushDB(t, r)
status := base.NewServerStatus(base.StatusIdle)
hb := newHeartbeater(heartbeaterParams{
logger: testLogger,
broker: rdbClient,
interval: tc.interval,
concurrency: tc.concurrency,
queues: tc.queues,
strictPriority: false,
status: status,
starting: make(chan *base.TaskMessage),
finished: make(chan *base.TaskMessage),
})
// Change host and pid fields for testing purpose.
hb.host = tc.host
hb.pid = tc.pid
status.Set(base.StatusRunning)
var wg sync.WaitGroup
hb.start(&wg)
want := &base.ServerInfo{
Host: tc.host,
PID: tc.pid,
Queues: tc.queues,
Concurrency: tc.concurrency,
Started: time.Now(),
Status: "running",
}
// allow for heartbeater to write to redis
time.Sleep(tc.interval * 2)
ss, err := rdbClient.ListServers()
if err != nil {
t.Errorf("could not read server info from redis: %v", err)
hb.terminate()
continue
}
if len(ss) != 1 {
t.Errorf("(*RDB).ListServers returned %d process info, want 1", len(ss))
hb.terminate()
continue
}
if diff := cmp.Diff(want, ss[0], timeCmpOpt, ignoreOpt, ignoreFieldOpt); diff != "" {
t.Errorf("redis stored process status %+v, want %+v; (-want, +got)\n%s", ss[0], want, diff)
hb.terminate()
continue
}
// status change
status.Set(base.StatusStopped)
// allow for heartbeater to write to redis
time.Sleep(tc.interval * 2)
want.Status = "stopped"
ss, err = rdbClient.ListServers()
if err != nil {
t.Errorf("could not read process status from redis: %v", err)
hb.terminate()
continue
}
if len(ss) != 1 {
t.Errorf("(*RDB).ListProcesses returned %d process info, want 1", len(ss))
hb.terminate()
continue
}
if diff := cmp.Diff(want, ss[0], timeCmpOpt, ignoreOpt, ignoreFieldOpt); diff != "" {
t.Errorf("redis stored process status %+v, want %+v; (-want, +got)\n%s", ss[0], want, diff)
hb.terminate()
continue
}
hb.terminate()
}
}
func TestHeartbeaterWithRedisDown(t *testing.T) {
// Make sure that heartbeater goroutine doesn't panic
// if it cannot connect to redis.
defer func() {
if r := recover(); r != nil {
t.Errorf("panic occurred: %v", r)
}
}()
r := rdb.NewRDB(setup(t))
testBroker := testbroker.NewTestBroker(r)
hb := newHeartbeater(heartbeaterParams{
logger: testLogger,
broker: testBroker,
interval: time.Second,
concurrency: 10,
queues: map[string]int{"default": 1},
strictPriority: false,
status: base.NewServerStatus(base.StatusRunning),
starting: make(chan *base.TaskMessage),
finished: make(chan *base.TaskMessage),
})
testBroker.Sleep()
var wg sync.WaitGroup
hb.start(&wg)
// wait for heartbeater to try writing data to redis
time.Sleep(2 * time.Second)
hb.terminate()
}