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package redis_test
import (
"context"
"io"
. "github.com/bsm/ginkgo/v2"
. "github.com/bsm/gomega"
"github.com/redis/go-redis/v9"
"github.com/redis/go-redis/v9/internal/proto"
)
type testTimeout struct {
timeout bool
}
func (t testTimeout) Timeout() bool {
return t.timeout
}
func (t testTimeout) Error() string {
return "test timeout"
}
var _ = Describe("error", func() {
BeforeEach(func() {
})
AfterEach(func() {
})
It("should retry", func() {
data := map[error]bool{
io.EOF: true,
io.ErrUnexpectedEOF: true,
nil: false,
context.Canceled: false,
context.DeadlineExceeded: false,
redis.ErrPoolTimeout: true,
// Use typed errors instead of plain errors.New()
proto.ParseErrorReply([]byte("-ERR max number of clients reached")): true,
proto.ParseErrorReply([]byte("-LOADING Redis is loading the dataset in memory")): true,
proto.ParseErrorReply([]byte("-READONLY You can't write against a read only replica")): true,
proto.ParseErrorReply([]byte("-CLUSTERDOWN The cluster is down")): true,
proto.ParseErrorReply([]byte("-TRYAGAIN Command cannot be processed, please try again")): true,
proto.ParseErrorReply([]byte("-ERR other")): false,
}
for err, expected := range data {
Expect(redis.ShouldRetry(err, false)).To(Equal(expected))
Expect(redis.ShouldRetry(err, true)).To(Equal(expected))
}
})
It("should retry timeout", func() {
t1 := testTimeout{timeout: true}
Expect(redis.ShouldRetry(t1, true)).To(Equal(true))
Expect(redis.ShouldRetry(t1, false)).To(Equal(false))
t2 := testTimeout{timeout: false}
Expect(redis.ShouldRetry(t2, true)).To(Equal(true))
Expect(redis.ShouldRetry(t2, false)).To(Equal(true))
})
})
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