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package pool_test
import (
"testing"
"time"
"github.com/go-redis/redis/internal/pool"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
)
var _ = Describe("ConnPool", func() {
var connPool *pool.ConnPool
BeforeEach(func() {
connPool = pool.NewConnPool(&pool.Options{
Dialer: dummyDialer,
PoolSize: 10,
PoolTimeout: time.Hour,
IdleTimeout: time.Millisecond,
IdleCheckFrequency: time.Millisecond,
})
})
AfterEach(func() {
connPool.Close()
})
It("should unblock client when conn is removed", func() {
// Reserve one connection.
cn, _, err := connPool.Get()
Expect(err).NotTo(HaveOccurred())
// Reserve all other connections.
var cns []*pool.Conn
for i := 0; i < 9; i++ {
cn, _, err := connPool.Get()
Expect(err).NotTo(HaveOccurred())
cns = append(cns, cn)
}
started := make(chan bool, 1)
done := make(chan bool, 1)
go func() {
defer GinkgoRecover()
started <- true
_, _, err := connPool.Get()
Expect(err).NotTo(HaveOccurred())
done <- true
err = connPool.Put(cn)
Expect(err).NotTo(HaveOccurred())
}()
<-started
// Check that Get is blocked.
select {
case <-done:
Fail("Get is not blocked")
default:
// ok
}
err = connPool.Remove(cn)
Expect(err).NotTo(HaveOccurred())
// Check that Ping is unblocked.
select {
case <-done:
// ok
case <-time.After(time.Second):
Fail("Get is not unblocked")
}
for _, cn := range cns {
err = connPool.Put(cn)
Expect(err).NotTo(HaveOccurred())
}
})
})
var _ = Describe("conns reaper", func() {
const idleTimeout = time.Minute
var connPool *pool.ConnPool
var conns, idleConns, closedConns []*pool.Conn
BeforeEach(func() {
conns = nil
closedConns = nil
connPool = pool.NewConnPool(&pool.Options{
Dialer: dummyDialer,
PoolSize: 10,
PoolTimeout: time.Second,
IdleTimeout: idleTimeout,
IdleCheckFrequency: time.Hour,
OnClose: func(cn *pool.Conn) error {
closedConns = append(closedConns, cn)
return nil
},
})
// add stale connections
idleConns = nil
for i := 0; i < 3; i++ {
cn, _, err := connPool.Get()
Expect(err).NotTo(HaveOccurred())
cn.SetUsedAt(time.Now().Add(-2 * idleTimeout))
conns = append(conns, cn)
idleConns = append(idleConns, cn)
}
// add fresh connections
for i := 0; i < 3; i++ {
cn, _, err := connPool.Get()
Expect(err).NotTo(HaveOccurred())
conns = append(conns, cn)
}
for _, cn := range conns {
Expect(connPool.Put(cn)).NotTo(HaveOccurred())
}
Expect(connPool.Len()).To(Equal(6))
Expect(connPool.FreeLen()).To(Equal(6))
n, err := connPool.ReapStaleConns()
Expect(err).NotTo(HaveOccurred())
Expect(n).To(Equal(3))
})
AfterEach(func() {
_ = connPool.Close()
Expect(connPool.Len()).To(Equal(0))
Expect(connPool.FreeLen()).To(Equal(0))
Expect(len(closedConns)).To(Equal(len(conns)))
Expect(closedConns).To(ConsistOf(conns))
})
It("reaps stale connections", func() {
Expect(connPool.Len()).To(Equal(3))
Expect(connPool.FreeLen()).To(Equal(3))
})
It("does not reap fresh connections", func() {
n, err := connPool.ReapStaleConns()
Expect(err).NotTo(HaveOccurred())
Expect(n).To(Equal(0))
})
It("stale connections are closed", func() {
Expect(len(closedConns)).To(Equal(len(idleConns)))
Expect(closedConns).To(ConsistOf(idleConns))
})
It("pool is functional", func() {
for j := 0; j < 3; j++ {
var freeCns []*pool.Conn
for i := 0; i < 3; i++ {
cn, _, err := connPool.Get()
Expect(err).NotTo(HaveOccurred())
Expect(cn).NotTo(BeNil())
freeCns = append(freeCns, cn)
}
Expect(connPool.Len()).To(Equal(3))
Expect(connPool.FreeLen()).To(Equal(0))
cn, _, err := connPool.Get()
Expect(err).NotTo(HaveOccurred())
Expect(cn).NotTo(BeNil())
conns = append(conns, cn)
Expect(connPool.Len()).To(Equal(4))
Expect(connPool.FreeLen()).To(Equal(0))
err = connPool.Remove(cn)
Expect(err).NotTo(HaveOccurred())
Expect(connPool.Len()).To(Equal(3))
Expect(connPool.FreeLen()).To(Equal(0))
for _, cn := range freeCns {
err := connPool.Put(cn)
Expect(err).NotTo(HaveOccurred())
}
Expect(connPool.Len()).To(Equal(3))
Expect(connPool.FreeLen()).To(Equal(3))
}
})
})
var _ = Describe("race", func() {
var connPool *pool.ConnPool
var C, N int
BeforeEach(func() {
C, N = 10, 1000
if testing.Short() {
C = 4
N = 100
}
})
AfterEach(func() {
connPool.Close()
})
It("does not happen on Get, Put, and Remove", func() {
connPool = pool.NewConnPool(&pool.Options{
Dialer: dummyDialer,
PoolSize: 10,
PoolTimeout: time.Minute,
IdleTimeout: time.Millisecond,
IdleCheckFrequency: time.Millisecond,
})
perform(C, func(id int) {
for i := 0; i < N; i++ {
cn, _, err := connPool.Get()
Expect(err).NotTo(HaveOccurred())
if err == nil {
Expect(connPool.Put(cn)).NotTo(HaveOccurred())
}
}
}, func(id int) {
for i := 0; i < N; i++ {
cn, _, err := connPool.Get()
Expect(err).NotTo(HaveOccurred())
if err == nil {
Expect(connPool.Remove(cn)).NotTo(HaveOccurred())
}
}
})
})
})
|
