process

Documentation

Index

• Variables
• func AttemptElection() (bool, error)
• func ContinuousRegistration(extraInfo string, command string)
• func ElectedNode() (hostname string, token string, isElected bool, err error)
• func ExpireNodesHistory() error
• func GetHash(input []byte) string
• func GetRandomData() []byte
• func GrabElection() error
• func Reelect() error
• func RegisterNode(extraInfo string, command string, firstTime bool) (sql.Result, error)
• type HealthStatus
  • func HealthTest() (*HealthStatus, error)
  • func SimpleHealthTest() (*HealthStatus, error)
• type OrchestratorExecutionMode
• type Token
  • func NewToken() *Token

Variables

var ThisHostname string

Functions

func AttemptElection

func AttemptElection() (bool, error)

AttemptElection tries to grab leadership (become active node)

func ContinuousRegistration

func ContinuousRegistration(extraInfo string, command string)

func ElectedNode

func ElectedNode() (hostname string, token string, isElected bool, err error)

ElectedNode returns the details of the elected node, as well as answering the question "is this process the elected one"?

func ExpireNodesHistory

func ExpireNodesHistory() error

ExpireNodesHistory cleans up the nodes history

func GetHash

func GetHash(input []byte) string

func GetRandomData

func GetRandomData() []byte

func GrabElection

func GrabElection() error

GrabElection forcibly grabs leadership. Use with care!!

func Reelect

func Reelect() error

Reelect clears the way for re-elections. Active node is immediately demoted.

func RegisterNode

func RegisterNode(extraInfo string, command string, firstTime bool) (sql.Result, error)

RegisterNode writes down this node in the node_health table

Types

type HealthStatus

type HealthStatus struct {
	Healthy        bool
	Hostname       string
	Token          string
	IsActiveNode   bool
	ActiveNode     string
	Error          error
	AvailableNodes []string
}

func HealthTest

func HealthTest() (*HealthStatus, error)

HealthTest attempts to write to the backend database and get a result

func SimpleHealthTest

func SimpleHealthTest() (*HealthStatus, error)

Just check to make sure we can connect to the database

type OrchestratorExecutionMode

type OrchestratorExecutionMode string

const (
	OrchestratorExecutionCliMode  OrchestratorExecutionMode = "CLIMode"
	OrchestratorExecutionHttpMode                           = "HttpMode"
)

type Token

type Token struct {
	Hash string
}

Token is used to identify and validate requests to this service

var ProcessToken *Token = NewToken()

func NewToken

func NewToken() *Token