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slave_status.go
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slave_status.go
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/*
Copyright 2017 Google Inc.
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
http://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 mysql
import (
"fmt"
replicationdatapb "vitess.io/vitess/go/vt/proto/replicationdata"
)
// SlaveStatus holds replication information from SHOW SLAVE STATUS.
type SlaveStatus struct {
Position Position
SlaveIORunning bool
SlaveSQLRunning bool
SecondsBehindMaster uint
MasterHost string
MasterPort int
MasterConnectRetry int
}
// SlaveRunning returns true iff both the Slave IO and Slave SQL threads are
// running.
func (s *SlaveStatus) SlaveRunning() bool {
return s.SlaveIORunning && s.SlaveSQLRunning
}
// SlaveStatusToProto translates a Status to proto3.
func SlaveStatusToProto(s SlaveStatus) *replicationdatapb.Status {
return &replicationdatapb.Status{
Position: EncodePosition(s.Position),
SlaveIoRunning: s.SlaveIORunning,
SlaveSqlRunning: s.SlaveSQLRunning,
SecondsBehindMaster: uint32(s.SecondsBehindMaster),
MasterHost: s.MasterHost,
MasterPort: int32(s.MasterPort),
MasterConnectRetry: int32(s.MasterConnectRetry),
}
}
// ProtoToSlaveStatus translates a proto Status, or panics.
func ProtoToSlaveStatus(s *replicationdatapb.Status) SlaveStatus {
pos, err := DecodePosition(s.Position)
if err != nil {
panic(fmt.Errorf("cannot decode Position: %v", err))
}
return SlaveStatus{
Position: pos,
SlaveIORunning: s.SlaveIoRunning,
SlaveSQLRunning: s.SlaveSqlRunning,
SecondsBehindMaster: uint(s.SecondsBehindMaster),
MasterHost: s.MasterHost,
MasterPort: int(s.MasterPort),
MasterConnectRetry: int(s.MasterConnectRetry),
}
}