service

package
v1.0.0 Latest Latest
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 Go to latest Published: Feb 24, 2020 License: Apache-2.0 Imports: 18 Imported by: 0

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Constants

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Variables

This section is empty.

Functions

func GetRedisName 

func GetRedisName(rf *redisfailoverv1.RedisFailover) string

GetRedisName returns the name for redis resources

func GetRedisReadinessName 

func GetRedisReadinessName(rf *redisfailoverv1.RedisFailover) string

GetRedisReadinessName returns the name for redis resources

func GetRedisShutdownConfigMapName 

func GetRedisShutdownConfigMapName(rf *redisfailoverv1.RedisFailover) string

GetRedisShutdownConfigMapName returns the name for redis configmap

func GetRedisShutdownName 

func GetRedisShutdownName(rf *redisfailoverv1.RedisFailover) string

GetRedisShutdownName returns the name for redis resources

func GetSentinelName 

func GetSentinelName(rf *redisfailoverv1.RedisFailover) string

GetSentinelName returns the name for sentinel resources

Types

type RedisFailoverCheck 

type RedisFailoverCheck interface {
	CheckRedisNumber(rFailover *redisfailoverv1.RedisFailover) error
	CheckSentinelNumber(rFailover *redisfailoverv1.RedisFailover) error
	CheckAllSlavesFromMaster(master string, rFailover *redisfailoverv1.RedisFailover) error
	CheckSentinelNumberInMemory(sentinel string, rFailover *redisfailoverv1.RedisFailover) error
	CheckSentinelSlavesNumberInMemory(sentinel string, rFailover *redisfailoverv1.RedisFailover) error
	CheckSentinelMonitor(sentinel string, monitor string) error
	GetMasterIP(rFailover *redisfailoverv1.RedisFailover) (string, error)
	GetNumberMasters(rFailover *redisfailoverv1.RedisFailover) (int, error)
	GetRedisesIPs(rFailover *redisfailoverv1.RedisFailover) ([]string, error)
	GetSentinelsIPs(rFailover *redisfailoverv1.RedisFailover) ([]string, error)
	GetMinimumRedisPodTime(rFailover *redisfailoverv1.RedisFailover) (time.Duration, error)
	GetRedisesSlavesPods(rFailover *redisfailoverv1.RedisFailover) ([]string, error)
	GetRedisesMasterPod(rFailover *redisfailoverv1.RedisFailover) (string, error)
	GetStatefulSetUpdateRevision(rFailover *redisfailoverv1.RedisFailover) (string, error)
	GetRedisRevisionHash(podName string, rFailover *redisfailoverv1.RedisFailover) (string, error)
	CheckRedisSlavesReady(slaveIP string, rFailover *redisfailoverv1.RedisFailover) (bool, error)
}

RedisFailoverCheck defines the interface able to check the correct status of a redis failover

type RedisFailoverChecker 

type RedisFailoverChecker struct {
	// contains filtered or unexported fields
}

RedisFailoverChecker is our implementation of RedisFailoverCheck interface

func NewRedisFailoverChecker 

func NewRedisFailoverChecker(k8sService k8s.Services, redisClient redis.Client, logger log.Logger) *RedisFailoverChecker

NewRedisFailoverChecker creates an object of the RedisFailoverChecker struct

func (*RedisFailoverChecker) CheckAllSlavesFromMaster 

func (r *RedisFailoverChecker) CheckAllSlavesFromMaster(master string, rf *redisfailoverv1.RedisFailover) error

CheckAllSlavesFromMaster controlls that all slaves have the same master (the real one)

func (*RedisFailoverChecker) CheckRedisNumber 

func (r *RedisFailoverChecker) CheckRedisNumber(rf *redisfailoverv1.RedisFailover) error

CheckRedisNumber controlls that the number of deployed redis is the same than the requested on the spec

func (*RedisFailoverChecker) CheckRedisSlavesReady 

func (r *RedisFailoverChecker) CheckRedisSlavesReady(ip string, rFailover *redisfailoverv1.RedisFailover) (bool, error)

CheckRedisSlavesReady returns true if the slave is ready (sync, connected, etc)

func (*RedisFailoverChecker) CheckSentinelMonitor 

func (r *RedisFailoverChecker) CheckSentinelMonitor(sentinel string, monitor string) error

CheckSentinelMonitor controls if the sentinels are monitoring the expected master

func (*RedisFailoverChecker) CheckSentinelNumber 

func (r *RedisFailoverChecker) CheckSentinelNumber(rf *redisfailoverv1.RedisFailover) error

CheckSentinelNumber controlls that the number of deployed sentinel is the same than the requested on the spec

func (*RedisFailoverChecker) CheckSentinelNumberInMemory 

func (r *RedisFailoverChecker) CheckSentinelNumberInMemory(sentinel string, rf *redisfailoverv1.RedisFailover) error

CheckSentinelNumberInMemory controls that the provided sentinel has only the living sentinels on its memory.

func (*RedisFailoverChecker) CheckSentinelSlavesNumberInMemory 

func (r *RedisFailoverChecker) CheckSentinelSlavesNumberInMemory(sentinel string, rf *redisfailoverv1.RedisFailover) error

CheckSentinelSlavesNumberInMemory controls that the provided sentinel has only the expected slaves number.

func (*RedisFailoverChecker) GetMasterIP 

func (r *RedisFailoverChecker) GetMasterIP(rf *redisfailoverv1.RedisFailover) (string, error)

GetMasterIP connects to all redis and returns the master of the redis failover

func (*RedisFailoverChecker) GetMinimumRedisPodTime 

func (r *RedisFailoverChecker) GetMinimumRedisPodTime(rf *redisfailoverv1.RedisFailover) (time.Duration, error)

GetMinimumRedisPodTime returns the minimum time a pod is alive

func (*RedisFailoverChecker) GetNumberMasters 

func (r *RedisFailoverChecker) GetNumberMasters(rf *redisfailoverv1.RedisFailover) (int, error)

GetNumberMasters returns the number of redis nodes that are working as a master

func (*RedisFailoverChecker) GetRedisRevisionHash 

func (r *RedisFailoverChecker) GetRedisRevisionHash(podName string, rFailover *redisfailoverv1.RedisFailover) (string, error)

GetRedisRevisionHash returns the statefulset uid for the pod

func (*RedisFailoverChecker) GetRedisesIPs 

func (r *RedisFailoverChecker) GetRedisesIPs(rf *redisfailoverv1.RedisFailover) ([]string, error)

GetRedisesIPs returns the IPs of the Redis nodes

func (*RedisFailoverChecker) GetRedisesMasterPod 

func (r *RedisFailoverChecker) GetRedisesMasterPod(rFailover *redisfailoverv1.RedisFailover) (string, error)

GetRedisesMasterPod returns pods names of the Redis slave nodes

func (*RedisFailoverChecker) GetRedisesSlavesPods 

func (r *RedisFailoverChecker) GetRedisesSlavesPods(rf *redisfailoverv1.RedisFailover) ([]string, error)

GetRedisesSlavesPods returns pods names of the Redis slave nodes

func (*RedisFailoverChecker) GetSentinelsIPs 

func (r *RedisFailoverChecker) GetSentinelsIPs(rf *redisfailoverv1.RedisFailover) ([]string, error)

GetSentinelsIPs returns the IPs of the Sentinel nodes

func (*RedisFailoverChecker) GetStatefulSetUpdateRevision 

func (r *RedisFailoverChecker) GetStatefulSetUpdateRevision(rFailover *redisfailoverv1.RedisFailover) (string, error)

GetStatefulSetUpdateRevision returns current version for the statefulSet If the label don't exists, we return an empty value and no error, so previous versions don't break

type RedisFailoverClient 

type RedisFailoverClient interface {
	EnsureSentinelService(rFailover *redisfailoverv1.RedisFailover, labels map[string]string, ownerRefs []metav1.OwnerReference) error
	EnsureSentinelConfigMap(rFailover *redisfailoverv1.RedisFailover, labels map[string]string, ownerRefs []metav1.OwnerReference) error
	EnsureSentinelDeployment(rFailover *redisfailoverv1.RedisFailover, labels map[string]string, ownerRefs []metav1.OwnerReference) error
	EnsureRedisStatefulset(rFailover *redisfailoverv1.RedisFailover, labels map[string]string, ownerRefs []metav1.OwnerReference) error
	EnsureRedisService(rFailover *redisfailoverv1.RedisFailover, labels map[string]string, ownerRefs []metav1.OwnerReference) error
	EnsureRedisShutdownConfigMap(rFailover *redisfailoverv1.RedisFailover, labels map[string]string, ownerRefs []metav1.OwnerReference) error
	EnsureRedisReadinessConfigMap(rFailover *redisfailoverv1.RedisFailover, labels map[string]string, ownerRefs []metav1.OwnerReference) error
	EnsureRedisConfigMap(rFailover *redisfailoverv1.RedisFailover, labels map[string]string, ownerRefs []metav1.OwnerReference) error
	EnsureNotPresentRedisService(rFailover *redisfailoverv1.RedisFailover) error
}

RedisFailoverClient has the minimumm methods that a Redis failover controller needs to satisfy in order to talk with K8s

type RedisFailoverHeal 

type RedisFailoverHeal interface {
	MakeMaster(ip string, rFailover *redisfailoverv1.RedisFailover) error
	SetOldestAsMaster(rFailover *redisfailoverv1.RedisFailover) error
	SetMasterOnAll(masterIP string, rFailover *redisfailoverv1.RedisFailover) error
	NewSentinelMonitor(ip string, monitor string, rFailover *redisfailoverv1.RedisFailover) error
	RestoreSentinel(ip string) error
	SetSentinelCustomConfig(ip string, rFailover *redisfailoverv1.RedisFailover) error
	SetRedisCustomConfig(ip string, rFailover *redisfailoverv1.RedisFailover) error
	DeletePod(podName string, rFailover *redisfailoverv1.RedisFailover) error
}

RedisFailoverHeal defines the interface able to fix the problems on the redis failovers

type RedisFailoverHealer 

type RedisFailoverHealer struct {
	// contains filtered or unexported fields
}

RedisFailoverHealer is our implementation of RedisFailoverCheck interface

func NewRedisFailoverHealer 

func NewRedisFailoverHealer(k8sService k8s.Services, redisClient redis.Client, logger log.Logger) *RedisFailoverHealer

NewRedisFailoverHealer creates an object of the RedisFailoverChecker struct

func (*RedisFailoverHealer) DeletePod 

func (r *RedisFailoverHealer) DeletePod(podName string, rFailover *redisfailoverv1.RedisFailover) error

DeletePod delete a failing pod so kubernetes relaunch it again

func (*RedisFailoverHealer) MakeMaster 

func (r *RedisFailoverHealer) MakeMaster(ip string, rf *redisfailoverv1.RedisFailover) error

func (*RedisFailoverHealer) NewSentinelMonitor 

func (r *RedisFailoverHealer) NewSentinelMonitor(ip string, monitor string, rf *redisfailoverv1.RedisFailover) error

NewSentinelMonitor changes the master that Sentinel has to monitor

func (*RedisFailoverHealer) RestoreSentinel 

func (r *RedisFailoverHealer) RestoreSentinel(ip string) error

RestoreSentinel clear the number of sentinels on memory

func (*RedisFailoverHealer) SetMasterOnAll 

func (r *RedisFailoverHealer) SetMasterOnAll(masterIP string, rf *redisfailoverv1.RedisFailover) error

SetMasterOnAll puts all redis nodes as a slave of a given master

func (*RedisFailoverHealer) SetOldestAsMaster 

func (r *RedisFailoverHealer) SetOldestAsMaster(rf *redisfailoverv1.RedisFailover) error

SetOldestAsMaster puts all redis to the same master, choosen by order of appearance

func (*RedisFailoverHealer) SetRedisCustomConfig 

func (r *RedisFailoverHealer) SetRedisCustomConfig(ip string, rf *redisfailoverv1.RedisFailover) error

SetRedisCustomConfig will call redis to set the configuration given in config

func (*RedisFailoverHealer) SetSentinelCustomConfig 

func (r *RedisFailoverHealer) SetSentinelCustomConfig(ip string, rf *redisfailoverv1.RedisFailover) error

SetSentinelCustomConfig will call sentinel to set the configuration given in config

type RedisFailoverKubeClient 

type RedisFailoverKubeClient struct {
	K8SService k8s.Services
	// contains filtered or unexported fields
}

RedisFailoverKubeClient implements the required methods to talk with kubernetes

func NewRedisFailoverKubeClient 

func NewRedisFailoverKubeClient(k8sService k8s.Services, logger log.Logger) *RedisFailoverKubeClient

NewRedisFailoverKubeClient creates a new RedisFailoverKubeClient

func (*RedisFailoverKubeClient) EnsureNotPresentRedisService 

func (r *RedisFailoverKubeClient) EnsureNotPresentRedisService(rf *redisfailoverv1.RedisFailover) error

EnsureNotPresentRedisService makes sure the redis service is not present

func (*RedisFailoverKubeClient) EnsureRedisConfigMap 

func (r *RedisFailoverKubeClient) EnsureRedisConfigMap(rf *redisfailoverv1.RedisFailover, labels map[string]string, ownerRefs []metav1.OwnerReference) error

EnsureRedisConfigMap makes sure the Redis ConfigMap exists

func (*RedisFailoverKubeClient) EnsureRedisReadinessConfigMap 

func (r *RedisFailoverKubeClient) EnsureRedisReadinessConfigMap(rf *redisfailoverv1.RedisFailover, labels map[string]string, ownerRefs []metav1.OwnerReference) error

EnsureRedisReadinessConfigMap makes sure the redis configmap with shutdown script exists

func (*RedisFailoverKubeClient) EnsureRedisService 

func (r *RedisFailoverKubeClient) EnsureRedisService(rf *redisfailoverv1.RedisFailover, labels map[string]string, ownerRefs []metav1.OwnerReference) error

EnsureRedisService makes sure the redis statefulset exists

func (*RedisFailoverKubeClient) EnsureRedisShutdownConfigMap 

func (r *RedisFailoverKubeClient) EnsureRedisShutdownConfigMap(rf *redisfailoverv1.RedisFailover, labels map[string]string, ownerRefs []metav1.OwnerReference) error

EnsureRedisShutdownConfigMap makes sure the redis configmap with shutdown script exists

func (*RedisFailoverKubeClient) EnsureRedisStatefulset 

func (r *RedisFailoverKubeClient) EnsureRedisStatefulset(rf *redisfailoverv1.RedisFailover, labels map[string]string, ownerRefs []metav1.OwnerReference) error

EnsureRedisStatefulset makes sure the redis statefulset exists in the desired state

func (*RedisFailoverKubeClient) EnsureSentinelConfigMap 

func (r *RedisFailoverKubeClient) EnsureSentinelConfigMap(rf *redisfailoverv1.RedisFailover, labels map[string]string, ownerRefs []metav1.OwnerReference) error

EnsureSentinelConfigMap makes sure the sentinel configmap exists

func (*RedisFailoverKubeClient) EnsureSentinelDeployment 

func (r *RedisFailoverKubeClient) EnsureSentinelDeployment(rf *redisfailoverv1.RedisFailover, labels map[string]string, ownerRefs []metav1.OwnerReference) error

EnsureSentinelDeployment makes sure the sentinel deployment exists in the desired state

func (*RedisFailoverKubeClient) EnsureSentinelService 

func (r *RedisFailoverKubeClient) EnsureSentinelService(rf *redisfailoverv1.RedisFailover, labels map[string]string, ownerRefs []metav1.OwnerReference) error

EnsureSentinelService makes sure the sentinel service exists

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