zk

package
v0.0.0-...-077b43f Latest Latest
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 Go to latest Published: Sep 27, 2017 License: Apache-2.0 Imports: 29 Imported by: 0

Documentation

Overview

Package zk is a helper lib that manages kafka cluster meta data and consumer meta data.

Index

Constants

View Source 
const (
	KatewayIdsRoot = "/_kateway/ids"

	KatewayMysqlPath = "/_kateway/mysql"

	PubsubJobConfig      = "/_kateway/orchestrator/jobconfig"
	PubsubJobQueues      = "/_kateway/orchestrator/jobs"
	PubsubActors         = "/_kateway/orchestrator/actors/ids"
	PubsubJobQueueOwners = "/_kateway/orchestrator/actors/job_owners"
	PubsubWebhooks       = "/_kateway/orchestrator/webhooks"
	PubsubWebhooksOff    = "/_kateway/orchestrator/webhooks_off"
	PubsubWebhookOwners  = "/_kateway/orchestrator/actors/webhook_owners"

	KguardLeaderPath = "_kguard/leader"

	ConsumersPath           = "/consumers"
	BrokerIdsPath           = "/brokers/ids"
	BrokerTopicsPath        = "/brokers/topics"
	ControllerPath          = "/controller"
	ControllerEpochPath     = "/controller_epoch"
	BrokerSequenceIdPath    = "/brokers/seqid"
	EntityConfigChangesPath = "/config/changes"
	TopicConfigPath         = "/config/topics"
	EntityConfigPath        = "/config"
	DeleteTopicsPath        = "/admin/delete_topics"

	RedisMonPath     = "/redis"
	RedisClusterRoot = "/rediscluster"

	DbusRoot = "/dbus"
)

Variables

View Source 
var (
	ErrDupConnect      = errors.New("connect while being connected")
	ErrClaimedByOthers = errors.New("claimed by others")
	ErrNotClaimed      = errors.New("release non-claimed")
)
View Source 
var PanicHandler func(interface{})

Functions

func ClusterPath 

func ClusterPath(cluster string) string

func DbusCheckpointRoot 

func DbusCheckpointRoot(cluster string) string

func DbusClusterRoot 

func DbusClusterRoot(cluster string) string

func DbusConfig 

func DbusConfig(cluster string) string

func DbusConfigDir 

func DbusConfigDir(cluster string) string

func DefaultZkSessionTimeout 

func DefaultZkSessionTimeout() time.Duration

func TimestampToTime 

func TimestampToTime(ts string) time.Time

Types

type ActorList 

type ActorList []string

func (ActorList) Len 

func (this ActorList) Len() int

func (ActorList) Less 

func (this ActorList) Less(i, j int) bool

func (ActorList) Swap 

func (this ActorList) Swap(i, j int)

type BrokerInfo 

type BrokerInfo struct {
	Id   int    `json:"id"`
	Host string `json:"host"`
	Port int    `json:"port"`
}

func (*BrokerInfo) Addr 

func (this *BrokerInfo) Addr() string

func (*BrokerInfo) NamedAddr 

func (this *BrokerInfo) NamedAddr() string

type BrokerZnode 

type BrokerZnode struct {
	Id        string   `json:-`
	JmxPort   int      `json:"jmx_port"`
	Timestamp string   `json:"timestamp"`
	Endpoints []string `json:"endpoints"`
	Host      string   `json:"host"`
	Port      int      `json:"port"`
	Version   int      `json:"version"`
}

func (*BrokerZnode) Addr 

func (b *BrokerZnode) Addr() string

func (*BrokerZnode) NamedAddr 

func (this *BrokerZnode) NamedAddr() (string, bool)

func (BrokerZnode) NamedString 

func (b BrokerZnode) NamedString() string

func (BrokerZnode) String 

func (b BrokerZnode) String() string

func (*BrokerZnode) Uptime 

func (b *BrokerZnode) Uptime() time.Time

type Config 

type Config struct {
	Name           string
	ZkAddrs        string
	SessionTimeout time.Duration
	PanicOnError   bool
}

func DefaultConfig 

func DefaultConfig(name, addrs string) *Config

func (*Config) ZkServers 

func (this *Config) ZkServers() []string

type ConsumerMeta 

type ConsumerMeta struct {
	Group          string
	Online         bool
	Topic          string
	PartitionId    string
	Mtime          ZkTimestamp
	ConsumerOffset int64
	OldestOffset   int64
	ProducerOffset int64 // newest offset
	Lag            int64
	ConsumerZnode  *ConsumerZnode
}

type ConsumerZnode 

type ConsumerZnode struct {
	Id           string         `json:-`
	Version      int            `json:"version"`
	Subscription map[string]int `json:"subscription"` // topic:count
	Pattern      string         `json:"pattern"`
	Timestamp    interface{}    `json:"timestamp"`
}

func (*ConsumerZnode) ClientRealIP 

func (c *ConsumerZnode) ClientRealIP() (ip string)

func (*ConsumerZnode) Host 

func (c *ConsumerZnode) Host() string

func (*ConsumerZnode) String 

func (c *ConsumerZnode) String() string

func (*ConsumerZnode) Topics 

func (c *ConsumerZnode) Topics() []string

func (*ConsumerZnode) Uptime 

func (c *ConsumerZnode) Uptime() time.Time

type ControllerMeta 

type ControllerMeta struct {
	Broker *BrokerZnode
	Mtime  ZkTimestamp
	Epoch  string
}

func (*ControllerMeta) String 

func (c *ControllerMeta) String() string

type EsCluster 

type EsCluster struct {
	Name string
	// contains filtered or unexported fields
}

func (*EsCluster) AddNode 

func (ec *EsCluster) AddNode(hostPort string) error

func (*EsCluster) FirstBootstrapNode 

func (ec *EsCluster) FirstBootstrapNode() string

func (*EsCluster) Nodes 

func (ec *EsCluster) Nodes() []string

type KatewayMeta 

type KatewayMeta struct {
	Id        string `json:"id"`
	Zone      string `json:"zone"`
	Ver       string `json:"ver"`
	Build     string `json:"build"`
	BuiltAt   string `json:"builtat"`
	Arch      string `json:"arch"`
	Host      string `json:"host"`
	Ip        string `json:"ip"`
	Cpu       string `json:"cpu"`
	PubAddr   string `json:"pub"`
	SPubAddr  string `json:"spub"`
	SubAddr   string `json:"sub"`
	SSubAddr  string `json:"ssub"`
	ManAddr   string `json:"man"`
	SManAddr  string `json:"sman"`
	DebugAddr string `json:"debug"`

	Ctime time.Time `json:"-"`
}

type KguardMeta 

type KguardMeta struct {
	Host       string
	Candidates int
	Ctime      time.Time
}

type Orchestrator 

type Orchestrator struct {
	*ZkZone
}

func (*Orchestrator) ActorRegistered 

func (this *Orchestrator) ActorRegistered(id string) (bool, error)

func (*Orchestrator) ClaimResource 

func (this *Orchestrator) ClaimResource(actorId, root, resource string) (err error)

func (*Orchestrator) JobQueueCluster 

func (this *Orchestrator) JobQueueCluster(topic string) (string, error)

func (*Orchestrator) RegisterActor 

func (this *Orchestrator) RegisterActor(id string, val []byte) error

func (*Orchestrator) ReleaseResource 

func (this *Orchestrator) ReleaseResource(actorId, root, resource string) error

func (*Orchestrator) ResignActor 

func (this *Orchestrator) ResignActor(id string) error

func (*Orchestrator) WatchActors 

func (this *Orchestrator) WatchActors() (ActorList, <-chan zk.Event, error)

func (*Orchestrator) WatchResources 

func (this *Orchestrator) WatchResources(path string) (ResourceList, <-chan zk.Event, error)

func (*Orchestrator) WebhookInfo 

func (this *Orchestrator) WebhookInfo(topic string) (*WebhookMeta, error)

type PartitionOffset 

type PartitionOffset struct {
	Cluster             string
	Topic               string
	Partition           int32
	Offset              int64
	Timestamp           int64
	Group               string
	TopicPartitionCount int
}

type RedisCluster 

type RedisCluster struct {
	Name       string          `json:"name"`
	Desciption string          `json:"desc"`
	Members    []RedisInstance `json:"members"`
}

type RedisInstance 

type RedisInstance struct {
	Host string `json:"host"`
	Port int    `json:"port"`
}

func (RedisInstance) String 

func (ri RedisInstance) String() string

type ResourceList 

type ResourceList []string

func (ResourceList) Len 

func (this ResourceList) Len() int

func (ResourceList) Less 

func (this ResourceList) Less(i, j int) bool

func (ResourceList) Swap 

func (this ResourceList) Swap(i, j int)

type TopicConfig 

type TopicConfig struct {
	Config TopicConfigInfo `json:"config"`
}

type TopicConfigInfo 

type TopicConfigInfo struct {
	RetentionMs string `json:"retention.ms"`
}

func (TopicConfigInfo) RetentionSeconds 

func (tci TopicConfigInfo) RetentionSeconds() time.Duration

type TopicConfigMeta 

type TopicConfigMeta struct {
	Config string
	Ctime  time.Time
	Mtime  time.Time
}

type TopicZnode 

type TopicZnode struct {
	Name       string           `json:-`
	Version    int              `json:"version"`
	Partitions map[string][]int `json:"partitions"` // {partitionId: replicas}
}

type WebhookMeta 

type WebhookMeta struct {
	Cluster   string   `json:"cluster"`
	Endpoints []string `json:"endpoints"`
}

func (*WebhookMeta) Bytes 

func (this *WebhookMeta) Bytes() []byte

func (*WebhookMeta) From 

func (this *WebhookMeta) From(b []byte) error

type ZkCluster 

type ZkCluster struct {
	Nickname  string       `json:"nickname"`
	Roster    []BrokerInfo `json:"roster"` // manually registered brokers
	Replicas  int          `json:"replicas"`
	Priority  int          `json:"priority"`
	Public    bool         `json:"public"`
	Retention int          `json:"retention"` // in hours
	// contains filtered or unexported fields
}

ZkCluster is a kafka cluster that has a chroot path in Zookeeper.

func (*ZkCluster) AddTopic 

func (this *ZkCluster) AddTopic(topic string, ts *sla.TopicSla) (output []string, err error)

func (*ZkCluster) AlterTopic 

func (this *ZkCluster) AlterTopic(topic string, ts *sla.TopicSla) (output []string, err error)

func (*ZkCluster) Broker 

func (this *ZkCluster) Broker(id int) (b *BrokerZnode)

func (*ZkCluster) BrokerList 

func (this *ZkCluster) BrokerList() []string

func (*ZkCluster) Brokers 

func (this *ZkCluster) Brokers() map[string]*BrokerZnode

Returns online {brokerId: broker}.

func (*ZkCluster) Chroot 

func (this *ZkCluster) Chroot() string

func (*ZkCluster) ClusterInfoPath 

func (this *ZkCluster) ClusterInfoPath() string

func (*ZkCluster) ConfiggedTopics 

func (this *ZkCluster) ConfiggedTopics() map[string]TopicConfigMeta

ConfiggedTopics returns topics and theirs configs in zk:/config/topics that have non-default configuration.

func (*ZkCluster) ConsumerGroupOffsetPath 

func (this *ZkCluster) ConsumerGroupOffsetPath(group string) string

func (*ZkCluster) ConsumerGroupRoot 

func (this *ZkCluster) ConsumerGroupRoot(group string) string

func (*ZkCluster) ConsumerGroups 

func (this *ZkCluster) ConsumerGroups() map[string]map[string]*ConsumerZnode

Returns {groupName: {consumerId: consumer}}

func (*ZkCluster) ConsumerGroupsOfTopic 

func (this *ZkCluster) ConsumerGroupsOfTopic(topic string) (map[string][]ConsumerMeta, error)

returns {consumerGroup: consumerInfo}

func (*ZkCluster) ConsumerOffsetsOfGroup 

func (this *ZkCluster) ConsumerOffsetsOfGroup(group string) map[string]map[string]int64

Returns {topic: {partitionId: offset}}

func (*ZkCluster) ConsumersByGroup 

func (this *ZkCluster) ConsumersByGroup(groupPattern string) map[string][]ConsumerMeta

returns {consumerGroup: consumerInfo}

func (*ZkCluster) DeleteTopic 

func (this *ZkCluster) DeleteTopic(topic string) (output []string, err error)

func (*ZkCluster) GetTopicConfigPath 

func (this *ZkCluster) GetTopicConfigPath(topic string) string

func (*ZkCluster) Isr 

func (this *ZkCluster) Isr(topic string, partitionId int32) ([]int, time.Time, time.Time)

func (*ZkCluster) ListChildren 

func (this *ZkCluster) ListChildren(recursive bool) ([]string, error)

func (*ZkCluster) Name 

func (this *ZkCluster) Name() string

func (*ZkCluster) NamedBrokerList 

func (this *ZkCluster) NamedBrokerList() []string

func (*ZkCluster) NamedZkConnectAddr 

func (this *ZkCluster) NamedZkConnectAddr() string

func (*ZkCluster) OnlyNamedBrokerList 

func (this *ZkCluster) OnlyNamedBrokerList() []string

OnlyNamedBrokerList only returns the brokers that has internal reverse DNS records.

func (*ZkCluster) OwnersOfGroupByTopic 

func (this *ZkCluster) OwnersOfGroupByTopic(group, topic string) map[string]string

Returns {partitionId: consumerId} consumerId is /consumers/$group/ids/$consumerId

func (*ZkCluster) Partitions 

func (this *ZkCluster) Partitions(topic string) []int32

func (*ZkCluster) RegisterBroker 

func (this *ZkCluster) RegisterBroker(id int, host string, port int) error

func (*ZkCluster) RegisteredInfo 

func (this *ZkCluster) RegisteredInfo() ZkCluster

Get registered cluster info from zk.

func (*ZkCluster) ResetConsumerGroupOffset 

func (this *ZkCluster) ResetConsumerGroupOffset(topic, group, partition string, offset int64) error

func (*ZkCluster) SetNickname 

func (this *ZkCluster) SetNickname(name string)

func (*ZkCluster) SetPriority 

func (this *ZkCluster) SetPriority(priority int)

func (*ZkCluster) SetPublic 

func (this *ZkCluster) SetPublic(public bool)

func (*ZkCluster) SetReplicas 

func (this *ZkCluster) SetReplicas(replicas int)

func (*ZkCluster) SetRetention 

func (this *ZkCluster) SetRetention(retention int)

func (*ZkCluster) SimpleConsumeKafkaTopic 

func (this *ZkCluster) SimpleConsumeKafkaTopic(topic string, msgChan chan<- *sarama.ConsumerMessage) error

func (*ZkCluster) TailMessage 

func (this *ZkCluster) TailMessage(topic string, partitionID int32, lastN int) ([][]byte, error)

func (*ZkCluster) TopicConfigInfo 

func (this *ZkCluster) TopicConfigInfo(topic string) (tci TopicConfigInfo, err error)

func (*ZkCluster) TopicConfigRoot 

func (this *ZkCluster) TopicConfigRoot() string

func (*ZkCluster) Topics 

func (this *ZkCluster) Topics() ([]string, error)

func (*ZkCluster) TopicsCtime 

func (this *ZkCluster) TopicsCtime() map[string]time.Time

func (*ZkCluster) TotalConsumerOffsets 

func (this *ZkCluster) TotalConsumerOffsets(topicPattern string) (total int64)

func (*ZkCluster) UnregisterBroker 

func (this *ZkCluster) UnregisterBroker(id int) error

func (*ZkCluster) WatchTopics 

func (this *ZkCluster) WatchTopics() ([]string, <-chan zk.Event, error)

func (*ZkCluster) ZkConnectAddr 

func (this *ZkCluster) ZkConnectAddr() string

kafka servers.properties zookeeper.connect=

func (*ZkCluster) ZkZone 

func (this *ZkCluster) ZkZone() *ZkZone

func (*ZkCluster) ZombieConsumerGroups 

func (this *ZkCluster) ZombieConsumerGroups(autofix bool) (groups []string)

type ZkStat 

type ZkStat struct {
	Version     string
	Latency     string
	Connections string
	Outstanding string
	Mode        string // S=standalone, L=leader, F=follower
	Znodes      string
	Received    string
	Sent        string
}

func ParseStatResult 

func ParseStatResult(s string) (stat ZkStat)

Parse `zk stat` output into ZkStat struct.

type ZkTimestamp 

type ZkTimestamp int64

func (ZkTimestamp) Time 

func (this ZkTimestamp) Time() time.Time

type ZkZone 

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

ZkZone represents a single Zookeeper ensemble where many kafka clusters can reside each of which has a different chroot path.

func NewZkZone 

func NewZkZone(config *Config) *ZkZone

NewZkZone creates a new ZkZone instance. All ephemeral nodes and watchers are automatically maintained event after zk connection lost and reconnected.

func (*ZkZone) AddRedis 

func (this *ZkZone) AddRedis(host string, port int)

func (*ZkZone) AddRedisCluster 

func (this *ZkZone) AddRedisCluster(cluster string, instances []RedisInstance)

func (*ZkZone) AllRedis 

func (this *ZkZone) AllRedis() []string

func (*ZkZone) AllRedisClusters 

func (this *ZkZone) AllRedisClusters() []RedisCluster

func (*ZkZone) CallSOS 

func (this *ZkZone) CallSOS(caller string, msg string)

CallSOS will send SOS message to the zone wide kguard leader.

func (*ZkZone) ChildrenWithData 

func (this *ZkZone) ChildrenWithData(path string) map[string]zkData

return {childName: zkData}

func (*ZkZone) Close 

func (this *ZkZone) Close()

func (*ZkZone) ClusterPath 

func (this *ZkZone) ClusterPath(name string) string

ClusterPath return the zk chroot path of a cluster.

func (*ZkZone) Clusters 

func (this *ZkZone) Clusters() map[string]string

returns {clusterName: clusterZkPath}

func (*ZkZone) Conn 

func (this *ZkZone) Conn() *zk.Conn

func (*ZkZone) Connect 

func (this *ZkZone) Connect() (err error)

func (*ZkZone) CreateDbusCluster 

func (this *ZkZone) CreateDbusCluster(name string) error

func (*ZkZone) CreateEphemeralZnode 

func (this *ZkZone) CreateEphemeralZnode(path string, data []byte) error

func (*ZkZone) CreateEsCluster 

func (this *ZkZone) CreateEsCluster(name string) error

func (*ZkZone) CreateJobQueue 

func (this *ZkZone) CreateJobQueue(topic, cluster string) error

func (*ZkZone) CreateOrUpdateWebhook 

func (this *ZkZone) CreateOrUpdateWebhook(topic string, hook WebhookMeta) error

func (*ZkZone) CreatePermenantZnode 

func (this *ZkZone) CreatePermenantZnode(path string, data []byte) error

func (*ZkZone) DefaultDbusCluster 

func (this *ZkZone) DefaultDbusCluster() (cluster string)

func (*ZkZone) DelRedis 

func (this *ZkZone) DelRedis(host string, port int)

func (*ZkZone) DelRedisCluster 

func (this *ZkZone) DelRedisCluster(cluster string)

func (*ZkZone) DeleteRecursive 

func (this *ZkZone) DeleteRecursive(node string) (err error)

func (*ZkZone) DiscoverClusters 

func (this *ZkZone) DiscoverClusters(rootPath string) ([]string, error)

DiscoverClusters find all possible kafka clusters.

func (*ZkZone) EnsurePathExists 

func (this *ZkZone) EnsurePathExists(path string) error

func (*ZkZone) Errors 

func (this *ZkZone) Errors() []error

func (*ZkZone) FlushKatewayMetrics 

func (this *ZkZone) FlushKatewayMetrics(katewayId string, key string, data []byte) error

func (*ZkZone) ForSortedBrokers 

func (this *ZkZone) ForSortedBrokers(fn func(cluster string, brokers map[string]*BrokerZnode))

func (*ZkZone) ForSortedClusters 

func (this *ZkZone) ForSortedClusters(fn func(zkcluster *ZkCluster))

func (*ZkZone) ForSortedControllers 

func (this *ZkZone) ForSortedControllers(fn func(cluster string, controller *ControllerMeta))

func (*ZkZone) ForSortedDbusClusters 

func (this *ZkZone) ForSortedDbusClusters(fn func(name string, data []byte))

func (*ZkZone) ForSortedEsClusters 

func (this *ZkZone) ForSortedEsClusters(fn func(*EsCluster))

func (*ZkZone) HostBelongs 

func (this *ZkZone) HostBelongs(hostIp string) (liveClusters, registeredClusters []string)

func (*ZkZone) KatewayInfoById 

func (this *ZkZone) KatewayInfoById(id string) *KatewayMeta

func (*ZkZone) KatewayInfos 

func (this *ZkZone) KatewayInfos() ([]*KatewayMeta, error)

KatewayInfos return online kateway instances meta sort by id.

func (*ZkZone) KatewayJobClusterConfig 

func (this *ZkZone) KatewayJobClusterConfig() (data []byte, err error)

func (*ZkZone) KatewayMysqlDsn 

func (this *ZkZone) KatewayMysqlDsn() (string, error)

func (*ZkZone) KguardInfos 

func (this *ZkZone) KguardInfos() ([]*KguardMeta, error)

func (*ZkZone) LoadKatewayMetrics 

func (this *ZkZone) LoadKatewayMetrics(katewayId string, key string) ([]byte, error)

func (*ZkZone) Name 

func (this *ZkZone) Name() string

Name of the zone.

func (*ZkZone) NewCluster 

func (this *ZkZone) NewCluster(cluster string) *ZkCluster

func (*ZkZone) NewEsCluster 

func (this *ZkZone) NewEsCluster(name string) *EsCluster

func (*ZkZone) NewOrchestrator 

func (this *ZkZone) NewOrchestrator() *Orchestrator

func (*ZkZone) NewclusterWithPath 

func (this *ZkZone) NewclusterWithPath(cluster, path string) *ZkCluster

func (*ZkZone) Ping 

func (this *ZkZone) Ping() error

func (*ZkZone) PublicClusters 

func (this *ZkZone) PublicClusters() []*ZkCluster

func (*ZkZone) RegisterCluster 

func (this *ZkZone) RegisterCluster(name, path string) error

func (*ZkZone) ResetErrors 

func (this *ZkZone) ResetErrors()

func (*ZkZone) RunZkFourLetterCommand 

func (this *ZkZone) RunZkFourLetterCommand(cmd string) map[string]string

Returns {zkHost: outputLines}

func (*ZkZone) SessionEvents 

func (this *ZkZone) SessionEvents() (<-chan zk.Event, bool)

SessionEvents returns zk connection events.

func (*ZkZone) SessionTimeout 

func (this *ZkZone) SessionTimeout() time.Duration

func (*ZkZone) ZkAddrList 

func (this *ZkZone) ZkAddrList() []string

func (*ZkZone) ZkAddrs 

func (this *ZkZone) ZkAddrs() string

Source Files

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