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package redeo_test
import (
"net"
"sync"
"github.com/bsm/redeo"
"github.com/bsm/redeo/resp"
)
func ExampleServer() {
// Init server and define handlers
srv := redeo.NewServer(nil)
srv.HandleFunc("ping", func(w resp.ResponseWriter, _ *resp.Command) {
w.AppendInlineString("PONG")
})
srv.HandleFunc("info", func(w resp.ResponseWriter, _ *resp.Command) {
w.AppendBulkString(srv.Info().String())
})
// Open a new listener
lis, err := net.Listen("tcp", ":9736")
if err != nil {
panic(err)
}
defer lis.Close()
// Start serving (blocking)
srv.Serve(lis)
}
func ExampleClient() {
srv := redeo.NewServer(nil)
srv.HandleFunc("myip", func(w resp.ResponseWriter, cmd *resp.Command) {
client := redeo.GetClient(cmd.Context())
if client == nil {
w.AppendNil()
return
}
w.AppendInlineString(client.RemoteAddr().String())
})
}
func ExamplePing() {
srv := redeo.NewServer(nil)
srv.Handle("ping", redeo.Ping())
}
func ExampleInfo() {
srv := redeo.NewServer(nil)
srv.Handle("info", redeo.Info(srv))
}
func ExamplePubSub() {
broker := redeo.NewPubSubBroker()
srv := redeo.NewServer(nil)
srv.Handle("publish", broker.Publish())
srv.Handle("subscribe", broker.Subscribe())
}
func ExampleHandlerFunc() {
mu := sync.RWMutex{}
myData := make(map[string]map[string]string)
srv := redeo.NewServer(nil)
// handle HSET
srv.HandleFunc("hset", func(w resp.ResponseWriter, c *resp.Command) {
// validate arguments
if c.ArgN() != 3 {
w.AppendError(redeo.WrongNumberOfArgs(c.Name))
return
}
// lock for write
mu.Lock()
defer mu.Unlock()
// fetch (find-or-create) key
hash, ok := myData[c.Arg(0).String()]
if !ok {
hash = make(map[string]string)
myData[c.Arg(0).String()] = hash
}
// check if field already exists
_, ok = hash[c.Arg(1).String()]
// set field
hash[c.Arg(1).String()] = c.Arg(2).String()
// respond
if ok {
w.AppendInt(0)
} else {
w.AppendInt(1)
}
})
// handle HGET
srv.HandleFunc("hget", func(w resp.ResponseWriter, c *resp.Command) {
if c.ArgN() != 2 {
w.AppendError(redeo.WrongNumberOfArgs(c.Name))
return
}
mu.RLock()
defer mu.RUnlock()
hash, ok := myData[c.Arg(0).String()]
if !ok {
w.AppendNil()
return
}
val, ok := hash[c.Arg(1).String()]
if !ok {
w.AppendNil()
return
}
w.AppendBulkString(val)
})
}
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