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analysis.go
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analysis.go
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/*
Copyright 2015 Shlomi Noach, courtesy Booking.com
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 inst
import (
"strings"
)
type AnalysisCode string
const (
NoProblem AnalysisCode = "NoProblem"
DeadMasterWithoutSlaves = "DeadMasterWithoutSlaves"
DeadMaster = "DeadMaster"
DeadMasterAndSlaves = "DeadMasterAndSlaves"
DeadMasterAndSomeSlaves = "DeadMasterAndSomeSlaves"
UnreachableMaster = "UnreachableMaster"
MasterSingleSlaveNotReplicating = "MasterSingleSlaveNotReplicating"
MasterSingleSlaveDead = "MasterSingleSlaveDead"
AllMasterSlavesNotReplicating = "AllMasterSlavesNotReplicating"
AllMasterSlavesNotReplicatingOrDead = "AllMasterSlavesNotReplicatingOrDead"
MasterWithoutSlaves = "MasterWithoutSlaves"
DeadCoMaster = "DeadCoMaster"
UnreachableCoMaster = "UnreachableCoMaster"
AllCoMasterSlavesNotReplicating = "AllCoMasterSlavesNotReplicating"
DeadIntermediateMaster = "DeadIntermediateMaster"
DeadIntermediateMasterWithSingleSlave = "DeadIntermediateMasterWithSingleSlave"
DeadIntermediateMasterWithSingleSlaveFailingToConnect = "DeadIntermediateMasterWithSingleSlaveFailingToConnect"
DeadIntermediateMasterAndSomeSlaves = "DeadIntermediateMasterAndSomeSlaves"
UnreachableIntermediateMaster = "UnreachableIntermediateMaster"
AllIntermediateMasterSlavesFailingToConnectOrDead = "AllIntermediateMasterSlavesFailingToConnectOrDead"
AllIntermediateMasterSlavesNotReplicating = "AllIntermediateMasterSlavesNotReplicating"
FirstTierSlaveFailingToConnectToMaster = "FirstTierSlaveFailingToConnectToMaster"
BinlogServerFailingToConnectToMaster = "BinlogServerFailingToConnectToMaster"
)
// ReplicationAnalysis notes analysis on replication chain status, per instance
type ReplicationAnalysis struct {
AnalyzedInstanceKey InstanceKey
AnalyzedInstanceMasterKey InstanceKey
ClusterDetails ClusterInfo
IsMaster bool
IsCoMaster bool
LastCheckValid bool
CountSlaves uint
CountValidSlaves uint
CountValidReplicatingSlaves uint
CountSlavesFailingToConnectToMaster uint
ReplicationDepth uint
SlaveHosts InstanceKeyMap
IsFailingToConnectToMaster bool
Analysis AnalysisCode
Description string
IsDowntimed bool
DowntimeEndTimestamp string
DowntimeRemainingSeconds int
IsBinlogServer bool
}
// GetSlaveHostsAsString serializes all slave keys as a single comma delimited string
func (this *ReplicationAnalysis) GetSlaveHostsAsString() string {
slaveHostsStrings := []string{}
for slaveKey := range this.SlaveHosts {
slaveHostsStrings = append(slaveHostsStrings, slaveKey.DisplayString())
}
return strings.Join(slaveHostsStrings, ",")
}
// ReadSlaveHostsFromString parses and reads slave keys from comma delimited string
func (this *ReplicationAnalysis) ReadSlaveHostsFromString(slaveHostsString string) error {
this.SlaveHosts = make(map[InstanceKey]bool)
slaveHostsStrings := strings.Split(slaveHostsString, ",")
for _, slaveKeyString := range slaveHostsStrings {
slaveKey, err := ParseInstanceKey(slaveKeyString)
if err != nil {
return err
}
this.SlaveHosts[*slaveKey] = true
}
return nil
}