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ping.go
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ping.go
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// Copyright 2018-2022 Burak Sezer
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package olric
import (
"context"
"strings"
"github.com/buraksezer/olric/internal/protocol"
"github.com/tidwall/redcon"
)
const DefaultPingResponse = "PONG"
func (db *Olric) ping(ctx context.Context, addr, message string) ([]byte, error) {
message = strings.TrimSpace(message)
pingCmd := protocol.NewPing()
if message != "" {
pingCmd = pingCmd.SetMessage(message)
}
cmd := pingCmd.Command(ctx)
rc := db.client.Get(addr)
err := rc.Process(ctx, cmd)
if err != nil {
return nil, err
}
return cmd.Bytes()
}
func (db *Olric) pingCommandHandler(conn redcon.Conn, cmd redcon.Command) {
pingCmd, err := protocol.ParsePingCommand(cmd)
if err != nil {
protocol.WriteError(conn, err)
return
}
if pingCmd.Message != "" {
conn.WriteString(pingCmd.Message)
return
}
conn.WriteString(DefaultPingResponse)
}