mirror of https://github.com/go-redis/redis.git
652 lines
16 KiB
Go
652 lines
16 KiB
Go
package redis_test
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import (
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"context"
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"crypto/rand"
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"fmt"
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"net"
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"strconv"
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"sync"
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"time"
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"github.com/go-redis/redis/v7"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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)
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var _ = Describe("Redis Ring", func() {
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const heartbeat = 100 * time.Millisecond
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var ring *redis.Ring
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setRingKeys := func() {
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for i := 0; i < 100; i++ {
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err := ring.Set(fmt.Sprintf("key%d", i), "value", 0).Err()
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Expect(err).NotTo(HaveOccurred())
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}
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}
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BeforeEach(func() {
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opt := redisRingOptions()
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opt.HeartbeatFrequency = heartbeat
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ring = redis.NewRing(opt)
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err := ring.ForEachShard(func(cl *redis.Client) error {
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return cl.FlushDB().Err()
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})
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Expect(err).NotTo(HaveOccurred())
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})
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AfterEach(func() {
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Expect(ring.Close()).NotTo(HaveOccurred())
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})
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It("supports WithContext", func() {
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c, cancel := context.WithCancel(context.Background())
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cancel()
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err := ring.WithContext(c).Ping().Err()
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Expect(err).To(MatchError("context canceled"))
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})
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It("distributes keys", func() {
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setRingKeys()
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// Both shards should have some keys now.
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Expect(ringShard1.Info("keyspace").Val()).To(ContainSubstring("keys=57"))
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Expect(ringShard2.Info("keyspace").Val()).To(ContainSubstring("keys=43"))
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})
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It("distributes keys when using EVAL", func() {
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script := redis.NewScript(`
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local r = redis.call('SET', KEYS[1], ARGV[1])
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return r
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`)
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var key string
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for i := 0; i < 100; i++ {
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key = fmt.Sprintf("key%d", i)
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err := script.Run(ring, []string{key}, "value").Err()
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Expect(err).NotTo(HaveOccurred())
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}
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Expect(ringShard1.Info("keyspace").Val()).To(ContainSubstring("keys=57"))
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Expect(ringShard2.Info("keyspace").Val()).To(ContainSubstring("keys=43"))
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})
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It("uses single shard when one of the shards is down", func() {
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// Stop ringShard2.
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Expect(ringShard2.Close()).NotTo(HaveOccurred())
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Eventually(func() int {
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return ring.Len()
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}, "30s").Should(Equal(1))
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setRingKeys()
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// RingShard1 should have all keys.
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Expect(ringShard1.Info("keyspace").Val()).To(ContainSubstring("keys=100"))
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// Start ringShard2.
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var err error
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ringShard2, err = startRedis(ringShard2Port)
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Expect(err).NotTo(HaveOccurred())
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Eventually(func() int {
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return ring.Len()
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}, "30s").Should(Equal(2))
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setRingKeys()
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// RingShard2 should have its keys.
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Expect(ringShard2.Info("keyspace").Val()).To(ContainSubstring("keys=43"))
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})
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It("supports hash tags", func() {
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for i := 0; i < 100; i++ {
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err := ring.Set(fmt.Sprintf("key%d{tag}", i), "value", 0).Err()
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Expect(err).NotTo(HaveOccurred())
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}
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Expect(ringShard1.Info("keyspace").Val()).ToNot(ContainSubstring("keys="))
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Expect(ringShard2.Info("keyspace").Val()).To(ContainSubstring("keys=100"))
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})
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Describe("pipeline", func() {
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It("distributes keys", func() {
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pipe := ring.Pipeline()
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for i := 0; i < 100; i++ {
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err := pipe.Set(fmt.Sprintf("key%d", i), "value", 0).Err()
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Expect(err).NotTo(HaveOccurred())
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}
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cmds, err := pipe.Exec()
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Expect(err).NotTo(HaveOccurred())
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Expect(cmds).To(HaveLen(100))
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Expect(pipe.Close()).NotTo(HaveOccurred())
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for _, cmd := range cmds {
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Expect(cmd.Err()).NotTo(HaveOccurred())
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Expect(cmd.(*redis.StatusCmd).Val()).To(Equal("OK"))
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}
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// Both shards should have some keys now.
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Expect(ringShard1.Info().Val()).To(ContainSubstring("keys=57"))
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Expect(ringShard2.Info().Val()).To(ContainSubstring("keys=43"))
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})
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It("is consistent with ring", func() {
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var keys []string
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for i := 0; i < 100; i++ {
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key := make([]byte, 64)
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_, err := rand.Read(key)
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Expect(err).NotTo(HaveOccurred())
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keys = append(keys, string(key))
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}
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_, err := ring.Pipelined(func(pipe redis.Pipeliner) error {
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for _, key := range keys {
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pipe.Set(key, "value", 0).Err()
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}
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return nil
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})
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Expect(err).NotTo(HaveOccurred())
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for _, key := range keys {
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val, err := ring.Get(key).Result()
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Expect(err).NotTo(HaveOccurred())
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Expect(val).To(Equal("value"))
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}
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})
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It("supports hash tags", func() {
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_, err := ring.Pipelined(func(pipe redis.Pipeliner) error {
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for i := 0; i < 100; i++ {
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pipe.Set(fmt.Sprintf("key%d{tag}", i), "value", 0).Err()
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}
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return nil
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})
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Expect(err).NotTo(HaveOccurred())
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Expect(ringShard1.Info().Val()).ToNot(ContainSubstring("keys="))
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Expect(ringShard2.Info().Val()).To(ContainSubstring("keys=100"))
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})
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})
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Describe("shard passwords", func() {
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It("can be initialized with a single password, used for all shards", func() {
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opts := redisRingOptions()
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opts.Password = "password"
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ring = redis.NewRing(opts)
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err := ring.Ping().Err()
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Expect(err).To(HaveOccurred())
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Expect(err.Error()).To(ContainSubstring("ERR AUTH"))
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})
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It("can be initialized with a passwords map, one for each shard", func() {
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opts := redisRingOptions()
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opts.Passwords = map[string]string{
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"ringShardOne": "password1",
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"ringShardTwo": "password2",
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}
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ring = redis.NewRing(opts)
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err := ring.Ping().Err()
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Expect(err).To(HaveOccurred())
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Expect(err.Error()).To(ContainSubstring("ERR AUTH"))
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})
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})
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Describe("new client callback", func() {
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It("can be initialized with a new client callback", func() {
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opts := redisRingOptions()
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opts.NewClient = func(name string, opt *redis.Options) *redis.Client {
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opt.Password = "password1"
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return redis.NewClient(opt)
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}
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ring = redis.NewRing(opts)
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err := ring.Ping().Err()
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Expect(err).To(HaveOccurred())
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Expect(err.Error()).To(ContainSubstring("ERR AUTH"))
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})
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})
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It("supports Process hook", func() {
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err := ring.Ping().Err()
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Expect(err).NotTo(HaveOccurred())
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var stack []string
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ring.AddHook(&hook{
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beforeProcess: func(ctx context.Context, cmd redis.Cmder) (context.Context, error) {
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Expect(cmd.String()).To(Equal("ping: "))
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stack = append(stack, "ring.BeforeProcess")
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return ctx, nil
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},
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afterProcess: func(ctx context.Context, cmd redis.Cmder) error {
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Expect(cmd.String()).To(Equal("ping: PONG"))
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stack = append(stack, "ring.AfterProcess")
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return nil
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},
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})
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ring.ForEachShard(func(shard *redis.Client) error {
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shard.AddHook(&hook{
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beforeProcess: func(ctx context.Context, cmd redis.Cmder) (context.Context, error) {
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Expect(cmd.String()).To(Equal("ping: "))
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stack = append(stack, "shard.BeforeProcess")
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return ctx, nil
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},
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afterProcess: func(ctx context.Context, cmd redis.Cmder) error {
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Expect(cmd.String()).To(Equal("ping: PONG"))
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stack = append(stack, "shard.AfterProcess")
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return nil
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},
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})
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return nil
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})
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err = ring.Ping().Err()
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Expect(err).NotTo(HaveOccurred())
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Expect(stack).To(Equal([]string{
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"ring.BeforeProcess",
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"shard.BeforeProcess",
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"shard.AfterProcess",
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"ring.AfterProcess",
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}))
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})
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It("supports Pipeline hook", func() {
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err := ring.Ping().Err()
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Expect(err).NotTo(HaveOccurred())
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var stack []string
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ring.AddHook(&hook{
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beforeProcessPipeline: func(ctx context.Context, cmds []redis.Cmder) (context.Context, error) {
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Expect(cmds).To(HaveLen(1))
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Expect(cmds[0].String()).To(Equal("ping: "))
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stack = append(stack, "ring.BeforeProcessPipeline")
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return ctx, nil
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},
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afterProcessPipeline: func(ctx context.Context, cmds []redis.Cmder) error {
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Expect(cmds).To(HaveLen(1))
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Expect(cmds[0].String()).To(Equal("ping: PONG"))
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stack = append(stack, "ring.AfterProcessPipeline")
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return nil
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},
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})
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ring.ForEachShard(func(shard *redis.Client) error {
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shard.AddHook(&hook{
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beforeProcessPipeline: func(ctx context.Context, cmds []redis.Cmder) (context.Context, error) {
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Expect(cmds).To(HaveLen(1))
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Expect(cmds[0].String()).To(Equal("ping: "))
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stack = append(stack, "shard.BeforeProcessPipeline")
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return ctx, nil
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},
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afterProcessPipeline: func(ctx context.Context, cmds []redis.Cmder) error {
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Expect(cmds).To(HaveLen(1))
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Expect(cmds[0].String()).To(Equal("ping: PONG"))
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stack = append(stack, "shard.AfterProcessPipeline")
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return nil
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},
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})
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return nil
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})
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_, err = ring.Pipelined(func(pipe redis.Pipeliner) error {
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pipe.Ping()
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return nil
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})
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Expect(err).NotTo(HaveOccurred())
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Expect(stack).To(Equal([]string{
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"ring.BeforeProcessPipeline",
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"shard.BeforeProcessPipeline",
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"shard.AfterProcessPipeline",
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"ring.AfterProcessPipeline",
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}))
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})
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It("supports TxPipeline hook", func() {
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err := ring.Ping().Err()
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Expect(err).NotTo(HaveOccurred())
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var stack []string
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ring.AddHook(&hook{
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beforeProcessPipeline: func(ctx context.Context, cmds []redis.Cmder) (context.Context, error) {
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Expect(cmds).To(HaveLen(1))
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Expect(cmds[0].String()).To(Equal("ping: "))
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stack = append(stack, "ring.BeforeProcessPipeline")
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return ctx, nil
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},
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afterProcessPipeline: func(ctx context.Context, cmds []redis.Cmder) error {
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Expect(cmds).To(HaveLen(1))
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Expect(cmds[0].String()).To(Equal("ping: PONG"))
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stack = append(stack, "ring.AfterProcessPipeline")
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return nil
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},
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})
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ring.ForEachShard(func(shard *redis.Client) error {
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shard.AddHook(&hook{
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beforeProcessPipeline: func(ctx context.Context, cmds []redis.Cmder) (context.Context, error) {
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Expect(cmds).To(HaveLen(3))
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Expect(cmds[1].String()).To(Equal("ping: "))
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stack = append(stack, "shard.BeforeProcessPipeline")
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return ctx, nil
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},
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afterProcessPipeline: func(ctx context.Context, cmds []redis.Cmder) error {
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Expect(cmds).To(HaveLen(3))
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Expect(cmds[1].String()).To(Equal("ping: PONG"))
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stack = append(stack, "shard.AfterProcessPipeline")
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return nil
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},
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})
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return nil
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})
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_, err = ring.TxPipelined(func(pipe redis.Pipeliner) error {
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pipe.Ping()
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return nil
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})
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Expect(err).NotTo(HaveOccurred())
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Expect(stack).To(Equal([]string{
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"ring.BeforeProcessPipeline",
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"shard.BeforeProcessPipeline",
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"shard.AfterProcessPipeline",
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"ring.AfterProcessPipeline",
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}))
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})
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})
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var _ = Describe("empty Redis Ring", func() {
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var ring *redis.Ring
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BeforeEach(func() {
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ring = redis.NewRing(&redis.RingOptions{})
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})
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AfterEach(func() {
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Expect(ring.Close()).NotTo(HaveOccurred())
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})
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It("returns an error", func() {
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err := ring.Ping().Err()
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Expect(err).To(MatchError("redis: all ring shards are down"))
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})
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It("pipeline returns an error", func() {
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_, err := ring.Pipelined(func(pipe redis.Pipeliner) error {
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pipe.Ping()
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return nil
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})
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Expect(err).To(MatchError("redis: all ring shards are down"))
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})
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})
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var _ = Describe("Ring watch", func() {
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const heartbeat = 100 * time.Millisecond
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var ring *redis.Ring
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BeforeEach(func() {
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opt := redisRingOptions()
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opt.HeartbeatFrequency = heartbeat
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ring = redis.NewRing(opt)
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err := ring.ForEachShard(func(cl *redis.Client) error {
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return cl.FlushDB().Err()
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})
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Expect(err).NotTo(HaveOccurred())
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})
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AfterEach(func() {
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Expect(ring.Close()).NotTo(HaveOccurred())
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})
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It("should Watch", func() {
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var incr func(string) error
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// Transactionally increments key using GET and SET commands.
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incr = func(key string) error {
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err := ring.Watch(func(tx *redis.Tx) error {
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n, err := tx.Get(key).Int64()
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if err != nil && err != redis.Nil {
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return err
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}
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_, err = tx.TxPipelined(func(pipe redis.Pipeliner) error {
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pipe.Set(key, strconv.FormatInt(n+1, 10), 0)
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return nil
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})
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return err
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}, key)
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if err == redis.TxFailedErr {
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return incr(key)
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}
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return err
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}
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var wg sync.WaitGroup
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for i := 0; i < 100; i++ {
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wg.Add(1)
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go func() {
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defer GinkgoRecover()
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defer wg.Done()
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err := incr("key")
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Expect(err).NotTo(HaveOccurred())
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}()
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}
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wg.Wait()
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n, err := ring.Get("key").Int64()
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Expect(err).NotTo(HaveOccurred())
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Expect(n).To(Equal(int64(100)))
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})
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It("should discard", func() {
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err := ring.Watch(func(tx *redis.Tx) error {
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cmds, err := tx.TxPipelined(func(pipe redis.Pipeliner) error {
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pipe.Set("key1", "hello1", 0)
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pipe.Discard()
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pipe.Set("key2", "hello2", 0)
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return nil
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})
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Expect(err).NotTo(HaveOccurred())
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Expect(cmds).To(HaveLen(1))
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return err
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}, "key1", "key2")
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Expect(err).NotTo(HaveOccurred())
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get := ring.Get("key1")
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Expect(get.Err()).To(Equal(redis.Nil))
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Expect(get.Val()).To(Equal(""))
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get = ring.Get("key2")
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Expect(get.Err()).NotTo(HaveOccurred())
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Expect(get.Val()).To(Equal("hello2"))
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})
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It("returns no error when there are no commands", func() {
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err := ring.Watch(func(tx *redis.Tx) error {
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_, err := tx.TxPipelined(func(redis.Pipeliner) error { return nil })
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return err
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}, "key")
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Expect(err).NotTo(HaveOccurred())
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v, err := ring.Ping().Result()
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Expect(err).NotTo(HaveOccurred())
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Expect(v).To(Equal("PONG"))
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})
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It("should exec bulks", func() {
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const N = 20000
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err := ring.Watch(func(tx *redis.Tx) error {
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cmds, err := tx.TxPipelined(func(pipe redis.Pipeliner) error {
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for i := 0; i < N; i++ {
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pipe.Incr("key")
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}
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return nil
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})
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Expect(err).NotTo(HaveOccurred())
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Expect(len(cmds)).To(Equal(N))
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for _, cmd := range cmds {
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Expect(cmd.Err()).NotTo(HaveOccurred())
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}
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return err
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}, "key")
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Expect(err).NotTo(HaveOccurred())
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num, err := ring.Get("key").Int64()
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Expect(err).NotTo(HaveOccurred())
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Expect(num).To(Equal(int64(N)))
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})
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It("should Watch/Unwatch", func() {
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var C, N int
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err := ring.Set("key", "0", 0).Err()
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Expect(err).NotTo(HaveOccurred())
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perform(C, func(id int) {
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for i := 0; i < N; i++ {
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err := ring.Watch(func(tx *redis.Tx) error {
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val, err := tx.Get("key").Result()
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Expect(err).NotTo(HaveOccurred())
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Expect(val).NotTo(Equal(redis.Nil))
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num, err := strconv.ParseInt(val, 10, 64)
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Expect(err).NotTo(HaveOccurred())
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cmds, err := tx.TxPipelined(func(pipe redis.Pipeliner) error {
|
|
pipe.Set("key", strconv.FormatInt(num+1, 10), 0)
|
|
return nil
|
|
})
|
|
Expect(cmds).To(HaveLen(1))
|
|
return err
|
|
}, "key")
|
|
if err == redis.TxFailedErr {
|
|
i--
|
|
continue
|
|
}
|
|
Expect(err).NotTo(HaveOccurred())
|
|
}
|
|
})
|
|
|
|
val, err := ring.Get("key").Int64()
|
|
Expect(err).NotTo(HaveOccurred())
|
|
Expect(val).To(Equal(int64(C * N)))
|
|
})
|
|
|
|
It("should close Tx without closing the client", func() {
|
|
err := ring.Watch(func(tx *redis.Tx) error {
|
|
_, err := tx.TxPipelined(func(pipe redis.Pipeliner) error {
|
|
pipe.Ping()
|
|
return nil
|
|
})
|
|
return err
|
|
}, "key")
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
Expect(ring.Ping().Err()).NotTo(HaveOccurred())
|
|
})
|
|
|
|
It("respects max size on multi", func() {
|
|
perform(1000, func(id int) {
|
|
var ping *redis.StatusCmd
|
|
|
|
err := ring.Watch(func(tx *redis.Tx) error {
|
|
cmds, err := tx.TxPipelined(func(pipe redis.Pipeliner) error {
|
|
ping = pipe.Ping()
|
|
return nil
|
|
})
|
|
Expect(err).NotTo(HaveOccurred())
|
|
Expect(cmds).To(HaveLen(1))
|
|
return err
|
|
}, "key")
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
Expect(ping.Err()).NotTo(HaveOccurred())
|
|
Expect(ping.Val()).To(Equal("PONG"))
|
|
})
|
|
|
|
ring.ForEachShard(func(cl *redis.Client) error {
|
|
defer GinkgoRecover()
|
|
|
|
pool := cl.Pool()
|
|
Expect(pool.Len()).To(BeNumerically("<=", 10))
|
|
Expect(pool.IdleLen()).To(BeNumerically("<=", 10))
|
|
Expect(pool.Len()).To(Equal(pool.IdleLen()))
|
|
|
|
return nil
|
|
})
|
|
})
|
|
})
|
|
|
|
var _ = Describe("Ring Tx timeout", func() {
|
|
const heartbeat = 100 * time.Millisecond
|
|
|
|
var ring *redis.Ring
|
|
|
|
AfterEach(func() {
|
|
_ = ring.Close()
|
|
})
|
|
|
|
testTimeout := func() {
|
|
It("Tx timeouts", func() {
|
|
err := ring.Watch(func(tx *redis.Tx) error {
|
|
return tx.Ping().Err()
|
|
}, "foo")
|
|
Expect(err).To(HaveOccurred())
|
|
Expect(err.(net.Error).Timeout()).To(BeTrue())
|
|
})
|
|
|
|
It("Tx Pipeline timeouts", func() {
|
|
err := ring.Watch(func(tx *redis.Tx) error {
|
|
_, err := tx.TxPipelined(func(pipe redis.Pipeliner) error {
|
|
pipe.Ping()
|
|
return nil
|
|
})
|
|
return err
|
|
}, "foo")
|
|
Expect(err).To(HaveOccurred())
|
|
Expect(err.(net.Error).Timeout()).To(BeTrue())
|
|
})
|
|
}
|
|
|
|
const pause = 5 * time.Second
|
|
|
|
Context("read/write timeout", func() {
|
|
BeforeEach(func() {
|
|
opt := redisRingOptions()
|
|
opt.ReadTimeout = 250 * time.Millisecond
|
|
opt.WriteTimeout = 250 * time.Millisecond
|
|
opt.HeartbeatFrequency = heartbeat
|
|
ring = redis.NewRing(opt)
|
|
|
|
err := ring.ForEachShard(func(client *redis.Client) error {
|
|
return client.ClientPause(pause).Err()
|
|
})
|
|
Expect(err).NotTo(HaveOccurred())
|
|
})
|
|
|
|
AfterEach(func() {
|
|
_ = ring.ForEachShard(func(client *redis.Client) error {
|
|
defer GinkgoRecover()
|
|
Eventually(func() error {
|
|
return client.Ping().Err()
|
|
}, 2*pause).ShouldNot(HaveOccurred())
|
|
return nil
|
|
})
|
|
})
|
|
|
|
testTimeout()
|
|
})
|
|
})
|