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pipeline_test.go
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pipeline_test.go
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package redis_test
import (
"strconv"
"sync"
"gopkg.in/redis.v2"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
)
var _ = Describe("Pipelining", func() {
var client *redis.Client
BeforeEach(func() {
client = redis.NewClient(&redis.Options{
Addr: redisAddr,
})
})
AfterEach(func() {
Expect(client.FlushDb().Err()).NotTo(HaveOccurred())
Expect(client.Close()).NotTo(HaveOccurred())
})
It("should pipeline", func() {
set := client.Set("key2", "hello2", 0)
Expect(set.Err()).NotTo(HaveOccurred())
Expect(set.Val()).To(Equal("OK"))
pipeline := client.Pipeline()
set = pipeline.Set("key1", "hello1", 0)
get := pipeline.Get("key2")
incr := pipeline.Incr("key3")
getNil := pipeline.Get("key4")
cmds, err := pipeline.Exec()
Expect(err).To(Equal(redis.Nil))
Expect(cmds).To(HaveLen(4))
Expect(pipeline.Close()).NotTo(HaveOccurred())
Expect(set.Err()).NotTo(HaveOccurred())
Expect(set.Val()).To(Equal("OK"))
Expect(get.Err()).NotTo(HaveOccurred())
Expect(get.Val()).To(Equal("hello2"))
Expect(incr.Err()).NotTo(HaveOccurred())
Expect(incr.Val()).To(Equal(int64(1)))
Expect(getNil.Err()).To(Equal(redis.Nil))
Expect(getNil.Val()).To(Equal(""))
})
It("should discard", func() {
pipeline := client.Pipeline()
pipeline.Get("key")
pipeline.Discard()
cmds, err := pipeline.Exec()
Expect(err).NotTo(HaveOccurred())
Expect(cmds).To(HaveLen(0))
Expect(pipeline.Close()).NotTo(HaveOccurred())
})
It("should support block style", func() {
var get *redis.StringCmd
cmds, err := client.Pipelined(func(pipe *redis.Pipeline) error {
get = pipe.Get("foo")
return nil
})
Expect(err).To(Equal(redis.Nil))
Expect(cmds).To(HaveLen(1))
Expect(cmds[0]).To(Equal(get))
Expect(get.Err()).To(Equal(redis.Nil))
Expect(get.Val()).To(Equal(""))
})
It("should handle vals/err", func() {
pipeline := client.Pipeline()
get := pipeline.Get("key")
Expect(get.Err()).NotTo(HaveOccurred())
Expect(get.Val()).To(Equal(""))
Expect(pipeline.Close()).NotTo(HaveOccurred())
})
It("should pipeline with empty queue", func() {
pipeline := client.Pipeline()
cmds, err := pipeline.Exec()
Expect(err).NotTo(HaveOccurred())
Expect(cmds).To(HaveLen(0))
Expect(pipeline.Close()).NotTo(HaveOccurred())
})
It("should increment correctly", func() {
const N = 20000
key := "TestPipelineIncr"
pipeline := client.Pipeline()
for i := 0; i < N; i++ {
pipeline.Incr(key)
}
cmds, err := pipeline.Exec()
Expect(err).NotTo(HaveOccurred())
Expect(pipeline.Close()).NotTo(HaveOccurred())
Expect(len(cmds)).To(Equal(20000))
for _, cmd := range cmds {
Expect(cmd.Err()).NotTo(HaveOccurred())
}
get := client.Get(key)
Expect(get.Err()).NotTo(HaveOccurred())
Expect(get.Val()).To(Equal(strconv.Itoa(N)))
})
It("should PipelineEcho", func() {
const N = 1000
wg := &sync.WaitGroup{}
wg.Add(N)
for i := 0; i < N; i++ {
go func(i int) {
defer GinkgoRecover()
defer wg.Done()
pipeline := client.Pipeline()
msg1 := "echo" + strconv.Itoa(i)
msg2 := "echo" + strconv.Itoa(i+1)
echo1 := pipeline.Echo(msg1)
echo2 := pipeline.Echo(msg2)
cmds, err := pipeline.Exec()
Expect(err).NotTo(HaveOccurred())
Expect(cmds).To(HaveLen(2))
Expect(echo1.Err()).NotTo(HaveOccurred())
Expect(echo1.Val()).To(Equal(msg1))
Expect(echo2.Err()).NotTo(HaveOccurred())
Expect(echo2.Val()).To(Equal(msg2))
Expect(pipeline.Close()).NotTo(HaveOccurred())
}(i)
}
wg.Wait()
})
})