692 lines
13 KiB
Go
692 lines
13 KiB
Go
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// Copyright 2011 Gary Burd
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//
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// Licensed under the Apache License, Version 2.0 (the "License"): you may
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// not use this file except in compliance with the License. You may obtain
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// a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations
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// under the License.
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package redis_test
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import (
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"errors"
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"io"
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"reflect"
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"sync"
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"testing"
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"time"
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"github.com/garyburd/redigo/redis"
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)
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type poolTestConn struct {
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d *poolDialer
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err error
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redis.Conn
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}
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func (c *poolTestConn) Close() error {
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c.d.mu.Lock()
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c.d.open -= 1
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c.d.mu.Unlock()
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return c.Conn.Close()
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}
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func (c *poolTestConn) Err() error { return c.err }
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func (c *poolTestConn) Do(commandName string, args ...interface{}) (interface{}, error) {
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if commandName == "ERR" {
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c.err = args[0].(error)
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commandName = "PING"
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}
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if commandName != "" {
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c.d.commands = append(c.d.commands, commandName)
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}
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return c.Conn.Do(commandName, args...)
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}
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func (c *poolTestConn) Send(commandName string, args ...interface{}) error {
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c.d.commands = append(c.d.commands, commandName)
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return c.Conn.Send(commandName, args...)
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}
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type poolDialer struct {
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mu sync.Mutex
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t *testing.T
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dialed int
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open int
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commands []string
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dialErr error
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}
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func (d *poolDialer) dial() (redis.Conn, error) {
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d.mu.Lock()
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d.dialed += 1
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dialErr := d.dialErr
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d.mu.Unlock()
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if dialErr != nil {
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return nil, d.dialErr
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}
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c, err := redis.DialDefaultServer()
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if err != nil {
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return nil, err
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}
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d.mu.Lock()
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d.open += 1
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d.mu.Unlock()
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return &poolTestConn{d: d, Conn: c}, nil
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}
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func (d *poolDialer) check(message string, p *redis.Pool, dialed, open, inuse int) {
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d.mu.Lock()
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if d.dialed != dialed {
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d.t.Errorf("%s: dialed=%d, want %d", message, d.dialed, dialed)
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}
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if d.open != open {
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d.t.Errorf("%s: open=%d, want %d", message, d.open, open)
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}
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stats := p.Stats()
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if stats.ActiveCount != open {
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d.t.Errorf("%s: active=%d, want %d", message, stats.ActiveCount, open)
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}
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if stats.IdleCount != open-inuse {
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d.t.Errorf("%s: idle=%d, want %d", message, stats.IdleCount, open-inuse)
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}
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d.mu.Unlock()
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}
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func TestPoolReuse(t *testing.T) {
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d := poolDialer{t: t}
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p := &redis.Pool{
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MaxIdle: 2,
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Dial: d.dial,
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}
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for i := 0; i < 10; i++ {
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c1 := p.Get()
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c1.Do("PING")
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c2 := p.Get()
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c2.Do("PING")
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c1.Close()
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c2.Close()
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}
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d.check("before close", p, 2, 2, 0)
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p.Close()
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d.check("after close", p, 2, 0, 0)
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}
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func TestPoolMaxIdle(t *testing.T) {
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d := poolDialer{t: t}
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p := &redis.Pool{
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MaxIdle: 2,
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Dial: d.dial,
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}
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defer p.Close()
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for i := 0; i < 10; i++ {
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c1 := p.Get()
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c1.Do("PING")
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c2 := p.Get()
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c2.Do("PING")
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c3 := p.Get()
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c3.Do("PING")
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c1.Close()
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c2.Close()
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c3.Close()
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}
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d.check("before close", p, 12, 2, 0)
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p.Close()
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d.check("after close", p, 12, 0, 0)
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}
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func TestPoolError(t *testing.T) {
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d := poolDialer{t: t}
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p := &redis.Pool{
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MaxIdle: 2,
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Dial: d.dial,
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}
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defer p.Close()
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c := p.Get()
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c.Do("ERR", io.EOF)
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if c.Err() == nil {
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t.Errorf("expected c.Err() != nil")
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}
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c.Close()
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c = p.Get()
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c.Do("ERR", io.EOF)
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c.Close()
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d.check(".", p, 2, 0, 0)
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}
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func TestPoolClose(t *testing.T) {
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d := poolDialer{t: t}
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p := &redis.Pool{
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MaxIdle: 2,
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Dial: d.dial,
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}
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defer p.Close()
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c1 := p.Get()
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c1.Do("PING")
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c2 := p.Get()
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c2.Do("PING")
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c3 := p.Get()
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c3.Do("PING")
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c1.Close()
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if _, err := c1.Do("PING"); err == nil {
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t.Errorf("expected error after connection closed")
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}
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c2.Close()
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c2.Close()
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p.Close()
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d.check("after pool close", p, 3, 1, 1)
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if _, err := c1.Do("PING"); err == nil {
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t.Errorf("expected error after connection and pool closed")
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}
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c3.Close()
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d.check("after conn close", p, 3, 0, 0)
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c1 = p.Get()
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if _, err := c1.Do("PING"); err == nil {
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t.Errorf("expected error after pool closed")
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}
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}
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func TestPoolTimeout(t *testing.T) {
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d := poolDialer{t: t}
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p := &redis.Pool{
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MaxIdle: 2,
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IdleTimeout: 300 * time.Second,
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Dial: d.dial,
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}
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defer p.Close()
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now := time.Now()
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redis.SetNowFunc(func() time.Time { return now })
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defer redis.SetNowFunc(time.Now)
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c := p.Get()
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c.Do("PING")
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c.Close()
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d.check("1", p, 1, 1, 0)
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now = now.Add(p.IdleTimeout)
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c = p.Get()
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c.Do("PING")
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c.Close()
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d.check("2", p, 2, 1, 0)
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}
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func TestPoolConcurrenSendReceive(t *testing.T) {
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p := &redis.Pool{
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Dial: redis.DialDefaultServer,
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}
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defer p.Close()
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c := p.Get()
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done := make(chan error, 1)
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go func() {
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_, err := c.Receive()
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done <- err
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}()
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c.Send("PING")
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c.Flush()
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err := <-done
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if err != nil {
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t.Fatalf("Receive() returned error %v", err)
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}
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_, err = c.Do("")
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if err != nil {
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t.Fatalf("Do() returned error %v", err)
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}
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c.Close()
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}
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func TestPoolBorrowCheck(t *testing.T) {
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d := poolDialer{t: t}
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p := &redis.Pool{
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MaxIdle: 2,
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Dial: d.dial,
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TestOnBorrow: func(redis.Conn, time.Time) error { return redis.Error("BLAH") },
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}
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defer p.Close()
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for i := 0; i < 10; i++ {
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c := p.Get()
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c.Do("PING")
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c.Close()
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}
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d.check("1", p, 10, 1, 0)
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}
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func TestPoolMaxActive(t *testing.T) {
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d := poolDialer{t: t}
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p := &redis.Pool{
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MaxIdle: 2,
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MaxActive: 2,
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Dial: d.dial,
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}
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defer p.Close()
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c1 := p.Get()
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c1.Do("PING")
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c2 := p.Get()
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c2.Do("PING")
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d.check("1", p, 2, 2, 2)
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c3 := p.Get()
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if _, err := c3.Do("PING"); err != redis.ErrPoolExhausted {
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t.Errorf("expected pool exhausted")
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}
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c3.Close()
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d.check("2", p, 2, 2, 2)
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c2.Close()
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d.check("3", p, 2, 2, 1)
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c3 = p.Get()
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if _, err := c3.Do("PING"); err != nil {
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t.Errorf("expected good channel, err=%v", err)
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}
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c3.Close()
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d.check("4", p, 2, 2, 1)
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}
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func TestPoolMonitorCleanup(t *testing.T) {
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d := poolDialer{t: t}
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p := &redis.Pool{
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MaxIdle: 2,
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MaxActive: 2,
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Dial: d.dial,
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}
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defer p.Close()
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c := p.Get()
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c.Send("MONITOR")
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c.Close()
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d.check("", p, 1, 0, 0)
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}
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func TestPoolPubSubCleanup(t *testing.T) {
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d := poolDialer{t: t}
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p := &redis.Pool{
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MaxIdle: 2,
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MaxActive: 2,
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Dial: d.dial,
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}
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defer p.Close()
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c := p.Get()
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c.Send("SUBSCRIBE", "x")
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c.Close()
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want := []string{"SUBSCRIBE", "UNSUBSCRIBE", "PUNSUBSCRIBE", "ECHO"}
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if !reflect.DeepEqual(d.commands, want) {
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t.Errorf("got commands %v, want %v", d.commands, want)
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}
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d.commands = nil
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c = p.Get()
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c.Send("PSUBSCRIBE", "x*")
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c.Close()
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want = []string{"PSUBSCRIBE", "UNSUBSCRIBE", "PUNSUBSCRIBE", "ECHO"}
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if !reflect.DeepEqual(d.commands, want) {
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t.Errorf("got commands %v, want %v", d.commands, want)
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}
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d.commands = nil
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}
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func TestPoolTransactionCleanup(t *testing.T) {
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d := poolDialer{t: t}
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p := &redis.Pool{
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MaxIdle: 2,
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MaxActive: 2,
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Dial: d.dial,
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}
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defer p.Close()
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c := p.Get()
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c.Do("WATCH", "key")
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c.Do("PING")
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c.Close()
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want := []string{"WATCH", "PING", "UNWATCH"}
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if !reflect.DeepEqual(d.commands, want) {
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t.Errorf("got commands %v, want %v", d.commands, want)
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}
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d.commands = nil
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c = p.Get()
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c.Do("WATCH", "key")
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c.Do("UNWATCH")
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c.Do("PING")
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c.Close()
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want = []string{"WATCH", "UNWATCH", "PING"}
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if !reflect.DeepEqual(d.commands, want) {
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t.Errorf("got commands %v, want %v", d.commands, want)
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}
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d.commands = nil
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c = p.Get()
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c.Do("WATCH", "key")
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c.Do("MULTI")
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c.Do("PING")
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c.Close()
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|
|
want = []string{"WATCH", "MULTI", "PING", "DISCARD"}
|
||
|
|
if !reflect.DeepEqual(d.commands, want) {
|
||
|
|
t.Errorf("got commands %v, want %v", d.commands, want)
|
||
|
|
}
|
||
|
|
d.commands = nil
|
||
|
|
|
||
|
|
c = p.Get()
|
||
|
|
c.Do("WATCH", "key")
|
||
|
|
c.Do("MULTI")
|
||
|
|
c.Do("DISCARD")
|
||
|
|
c.Do("PING")
|
||
|
|
c.Close()
|
||
|
|
|
||
|
|
want = []string{"WATCH", "MULTI", "DISCARD", "PING"}
|
||
|
|
if !reflect.DeepEqual(d.commands, want) {
|
||
|
|
t.Errorf("got commands %v, want %v", d.commands, want)
|
||
|
|
}
|
||
|
|
d.commands = nil
|
||
|
|
|
||
|
|
c = p.Get()
|
||
|
|
c.Do("WATCH", "key")
|
||
|
|
c.Do("MULTI")
|
||
|
|
c.Do("EXEC")
|
||
|
|
c.Do("PING")
|
||
|
|
c.Close()
|
||
|
|
|
||
|
|
want = []string{"WATCH", "MULTI", "EXEC", "PING"}
|
||
|
|
if !reflect.DeepEqual(d.commands, want) {
|
||
|
|
t.Errorf("got commands %v, want %v", d.commands, want)
|
||
|
|
}
|
||
|
|
d.commands = nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func startGoroutines(p *redis.Pool, cmd string, args ...interface{}) chan error {
|
||
|
|
errs := make(chan error, 10)
|
||
|
|
for i := 0; i < cap(errs); i++ {
|
||
|
|
go func() {
|
||
|
|
c := p.Get()
|
||
|
|
_, err := c.Do(cmd, args...)
|
||
|
|
c.Close()
|
||
|
|
errs <- err
|
||
|
|
}()
|
||
|
|
}
|
||
|
|
|
||
|
|
// Wait for goroutines to block.
|
||
|
|
time.Sleep(time.Second / 4)
|
||
|
|
|
||
|
|
return errs
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestWaitPool(t *testing.T) {
|
||
|
|
d := poolDialer{t: t}
|
||
|
|
p := &redis.Pool{
|
||
|
|
MaxIdle: 1,
|
||
|
|
MaxActive: 1,
|
||
|
|
Dial: d.dial,
|
||
|
|
Wait: true,
|
||
|
|
}
|
||
|
|
defer p.Close()
|
||
|
|
|
||
|
|
c := p.Get()
|
||
|
|
errs := startGoroutines(p, "PING")
|
||
|
|
d.check("before close", p, 1, 1, 1)
|
||
|
|
c.Close()
|
||
|
|
timeout := time.After(2 * time.Second)
|
||
|
|
for i := 0; i < cap(errs); i++ {
|
||
|
|
select {
|
||
|
|
case err := <-errs:
|
||
|
|
if err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
case <-timeout:
|
||
|
|
t.Fatalf("timeout waiting for blocked goroutine %d", i)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
d.check("done", p, 1, 1, 0)
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestWaitPoolClose(t *testing.T) {
|
||
|
|
d := poolDialer{t: t}
|
||
|
|
p := &redis.Pool{
|
||
|
|
MaxIdle: 1,
|
||
|
|
MaxActive: 1,
|
||
|
|
Dial: d.dial,
|
||
|
|
Wait: true,
|
||
|
|
}
|
||
|
|
defer p.Close()
|
||
|
|
|
||
|
|
c := p.Get()
|
||
|
|
if _, err := c.Do("PING"); err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
errs := startGoroutines(p, "PING")
|
||
|
|
d.check("before close", p, 1, 1, 1)
|
||
|
|
p.Close()
|
||
|
|
timeout := time.After(2 * time.Second)
|
||
|
|
for i := 0; i < cap(errs); i++ {
|
||
|
|
select {
|
||
|
|
case err := <-errs:
|
||
|
|
switch err {
|
||
|
|
case nil:
|
||
|
|
t.Fatal("blocked goroutine did not get error")
|
||
|
|
case redis.ErrPoolExhausted:
|
||
|
|
t.Fatal("blocked goroutine got pool exhausted error")
|
||
|
|
}
|
||
|
|
case <-timeout:
|
||
|
|
t.Fatal("timeout waiting for blocked goroutine")
|
||
|
|
}
|
||
|
|
}
|
||
|
|
c.Close()
|
||
|
|
d.check("done", p, 1, 0, 0)
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestWaitPoolCommandError(t *testing.T) {
|
||
|
|
testErr := errors.New("test")
|
||
|
|
d := poolDialer{t: t}
|
||
|
|
p := &redis.Pool{
|
||
|
|
MaxIdle: 1,
|
||
|
|
MaxActive: 1,
|
||
|
|
Dial: d.dial,
|
||
|
|
Wait: true,
|
||
|
|
}
|
||
|
|
defer p.Close()
|
||
|
|
|
||
|
|
c := p.Get()
|
||
|
|
errs := startGoroutines(p, "ERR", testErr)
|
||
|
|
d.check("before close", p, 1, 1, 1)
|
||
|
|
c.Close()
|
||
|
|
timeout := time.After(2 * time.Second)
|
||
|
|
for i := 0; i < cap(errs); i++ {
|
||
|
|
select {
|
||
|
|
case err := <-errs:
|
||
|
|
if err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
case <-timeout:
|
||
|
|
t.Fatalf("timeout waiting for blocked goroutine %d", i)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
d.check("done", p, cap(errs), 0, 0)
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestWaitPoolDialError(t *testing.T) {
|
||
|
|
testErr := errors.New("test")
|
||
|
|
d := poolDialer{t: t}
|
||
|
|
p := &redis.Pool{
|
||
|
|
MaxIdle: 1,
|
||
|
|
MaxActive: 1,
|
||
|
|
Dial: d.dial,
|
||
|
|
Wait: true,
|
||
|
|
}
|
||
|
|
defer p.Close()
|
||
|
|
|
||
|
|
c := p.Get()
|
||
|
|
errs := startGoroutines(p, "ERR", testErr)
|
||
|
|
d.check("before close", p, 1, 1, 1)
|
||
|
|
|
||
|
|
d.dialErr = errors.New("dial")
|
||
|
|
c.Close()
|
||
|
|
|
||
|
|
nilCount := 0
|
||
|
|
errCount := 0
|
||
|
|
timeout := time.After(2 * time.Second)
|
||
|
|
for i := 0; i < cap(errs); i++ {
|
||
|
|
select {
|
||
|
|
case err := <-errs:
|
||
|
|
switch err {
|
||
|
|
case nil:
|
||
|
|
nilCount++
|
||
|
|
case d.dialErr:
|
||
|
|
errCount++
|
||
|
|
default:
|
||
|
|
t.Fatalf("expected dial error or nil, got %v", err)
|
||
|
|
}
|
||
|
|
case <-timeout:
|
||
|
|
t.Fatalf("timeout waiting for blocked goroutine %d", i)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if nilCount != 1 {
|
||
|
|
t.Errorf("expected one nil error, got %d", nilCount)
|
||
|
|
}
|
||
|
|
if errCount != cap(errs)-1 {
|
||
|
|
t.Errorf("expected %d dial errors, got %d", cap(errs)-1, errCount)
|
||
|
|
}
|
||
|
|
d.check("done", p, cap(errs), 0, 0)
|
||
|
|
}
|
||
|
|
|
||
|
|
// Borrowing requires us to iterate over the idle connections, unlock the pool,
|
||
|
|
// and perform a blocking operation to check the connection still works. If
|
||
|
|
// TestOnBorrow fails, we must reacquire the lock and continue iteration. This
|
||
|
|
// test ensures that iteration will work correctly if multiple threads are
|
||
|
|
// iterating simultaneously.
|
||
|
|
func TestLocking_TestOnBorrowFails_PoolDoesntCrash(t *testing.T) {
|
||
|
|
const count = 100
|
||
|
|
|
||
|
|
// First we'll Create a pool where the pilfering of idle connections fails.
|
||
|
|
d := poolDialer{t: t}
|
||
|
|
p := &redis.Pool{
|
||
|
|
MaxIdle: count,
|
||
|
|
MaxActive: count,
|
||
|
|
Dial: d.dial,
|
||
|
|
TestOnBorrow: func(c redis.Conn, t time.Time) error {
|
||
|
|
return errors.New("No way back into the real world.")
|
||
|
|
},
|
||
|
|
}
|
||
|
|
defer p.Close()
|
||
|
|
|
||
|
|
// Fill the pool with idle connections.
|
||
|
|
conns := make([]redis.Conn, count)
|
||
|
|
for i := range conns {
|
||
|
|
conns[i] = p.Get()
|
||
|
|
}
|
||
|
|
for i := range conns {
|
||
|
|
conns[i].Close()
|
||
|
|
}
|
||
|
|
|
||
|
|
// Spawn a bunch of goroutines to thrash the pool.
|
||
|
|
var wg sync.WaitGroup
|
||
|
|
wg.Add(count)
|
||
|
|
for i := 0; i < count; i++ {
|
||
|
|
go func() {
|
||
|
|
c := p.Get()
|
||
|
|
if c.Err() != nil {
|
||
|
|
t.Errorf("pool get failed: %v", c.Err())
|
||
|
|
}
|
||
|
|
c.Close()
|
||
|
|
wg.Done()
|
||
|
|
}()
|
||
|
|
}
|
||
|
|
wg.Wait()
|
||
|
|
if d.dialed != count*2 {
|
||
|
|
t.Errorf("Expected %d dials, got %d", count*2, d.dialed)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func BenchmarkPoolGet(b *testing.B) {
|
||
|
|
b.StopTimer()
|
||
|
|
p := redis.Pool{Dial: redis.DialDefaultServer, MaxIdle: 2}
|
||
|
|
c := p.Get()
|
||
|
|
if err := c.Err(); err != nil {
|
||
|
|
b.Fatal(err)
|
||
|
|
}
|
||
|
|
c.Close()
|
||
|
|
defer p.Close()
|
||
|
|
b.StartTimer()
|
||
|
|
for i := 0; i < b.N; i++ {
|
||
|
|
c = p.Get()
|
||
|
|
c.Close()
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func BenchmarkPoolGetErr(b *testing.B) {
|
||
|
|
b.StopTimer()
|
||
|
|
p := redis.Pool{Dial: redis.DialDefaultServer, MaxIdle: 2}
|
||
|
|
c := p.Get()
|
||
|
|
if err := c.Err(); err != nil {
|
||
|
|
b.Fatal(err)
|
||
|
|
}
|
||
|
|
c.Close()
|
||
|
|
defer p.Close()
|
||
|
|
b.StartTimer()
|
||
|
|
for i := 0; i < b.N; i++ {
|
||
|
|
c = p.Get()
|
||
|
|
if err := c.Err(); err != nil {
|
||
|
|
b.Fatal(err)
|
||
|
|
}
|
||
|
|
c.Close()
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func BenchmarkPoolGetPing(b *testing.B) {
|
||
|
|
b.StopTimer()
|
||
|
|
p := redis.Pool{Dial: redis.DialDefaultServer, MaxIdle: 2}
|
||
|
|
c := p.Get()
|
||
|
|
if err := c.Err(); err != nil {
|
||
|
|
b.Fatal(err)
|
||
|
|
}
|
||
|
|
c.Close()
|
||
|
|
defer p.Close()
|
||
|
|
b.StartTimer()
|
||
|
|
for i := 0; i < b.N; i++ {
|
||
|
|
c = p.Get()
|
||
|
|
if _, err := c.Do("PING"); err != nil {
|
||
|
|
b.Fatal(err)
|
||
|
|
}
|
||
|
|
c.Close()
|
||
|
|
}
|
||
|
|
}
|