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metadata.go
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package gearman
// MagicType is the type of the magic code
type MagicType byte
const (
_ MagicType = iota
// MagicReq is for REQ magic type
MagicReq
// MagicRes is for RES magic type
MagicRes
)
const (
// MagicReqValue holds the magic code text value of REQ
MagicReqValue = "\000REQ"
// MagicResValue holds the magic code text value of RES
MagicResValue = "\000RES"
)
func (magicType MagicType) String() string {
switch magicType {
case MagicReq:
return MagicReqValue
case MagicRes:
return MagicResValue
default:
return "\000UNK"
}
}
// Valid checks if the magic type is valid
func (magicType MagicType) Valid() bool {
return magicType == MagicReq || magicType == MagicRes
}
// RoleType is the type of role(worker/client/server)
type RoleType byte
const (
// RoleWorker is the role of worker
RoleWorker RoleType = 1 << iota
// RoleClient is the role of client
RoleClient
// RoleServer is the role of server
RoleServer
// RoleWorkerAndClient presents role worker and client
RoleWorkerAndClient = RoleWorker | RoleClient
)
func (r RoleType) hasType(r1 RoleType) bool {
return r&r1 == r1
}
const (
_ PacketType = iota
CAN_DO
CANT_DO
RESET_ABILITIES
PRE_SLEEP
_
NOOP
SUBMIT_JOB
JOB_CREATED
GRAB_JOB
NO_JOB
JOB_ASSIGN
WORK_STATUS
WORK_COMPLETE
WORK_FAIL
GET_STATUS
ECHO_REQ
ECHO_RES
SUBMIT_JOB_BG
ERROR
STATUS_RES
SUBMIT_JOB_HIGH
SET_CLIENT_ID
CAN_DO_TIMEOUT
ALL_YOURS
WORK_EXCEPTION
OPTION_REQ
OPTION_RES
WORK_DATA
WORK_WARNING
GRAB_JOB_UNIQ
JOB_ASSIGN_UNIQ
SUBMIT_JOB_HIGH_BG
SUBMIT_JOB_LOW
SUBMIT_JOB_LOW_BG
SUBMIT_JOB_SCHED
SUBMIT_JOB_EPOCH
SUBMIT_REDUCE_JOB
SUBMIT_REDUCE_JOB_BACKGROUND
GRAB_JOB_ALL
JOB_ASSIGN_ALL
GET_STATUS_UNIQUE
STATUS_RES_UNIQUE
)
var packetTypeNames = map[PacketType]string{
CAN_DO: "CAN_DO",
CANT_DO: "CANT_DO",
RESET_ABILITIES: "RESET_ABILITIES",
PRE_SLEEP: "PRE_SLEEP",
NOOP: "NOOP",
SUBMIT_JOB: "SUBMIT_JOB",
JOB_CREATED: "JOB_CREATED",
GRAB_JOB: "GRAB_JOB",
NO_JOB: "NO_JOB",
JOB_ASSIGN: "JOB_ASSIGN",
WORK_STATUS: "WORK_STATUS",
WORK_COMPLETE: "WORK_COMPLETE",
WORK_FAIL: "WORK_FAIL",
GET_STATUS: "GET_STATUS",
ECHO_REQ: "ECHO_REQ",
ECHO_RES: "ECHO_RES",
SUBMIT_JOB_BG: "SUBMIT_JOB_BG",
ERROR: "ERROR",
STATUS_RES: "STATUS_RES",
SUBMIT_JOB_HIGH: "SUBMIT_JOB_HIGH",
SET_CLIENT_ID: "SET_CLIENT_ID",
CAN_DO_TIMEOUT: "CAN_DO_TIMEOUT",
ALL_YOURS: "ALL_YOURS",
WORK_EXCEPTION: "WORK_EXCEPTION",
OPTION_REQ: "OPTION_REQ",
OPTION_RES: "OPTION_RES",
WORK_DATA: "WORK_DATA",
WORK_WARNING: "WORK_WARNING",
GRAB_JOB_UNIQ: "GRAB_JOB_UNIQ",
JOB_ASSIGN_UNIQ: "JOB_ASSIGN_UNIQ",
SUBMIT_JOB_HIGH_BG: "SUBMIT_JOB_HIGH_BG",
SUBMIT_JOB_LOW: "SUBMIT_JOB_LOW",
SUBMIT_JOB_LOW_BG: "SUBMIT_JOB_LOW_BG",
SUBMIT_JOB_SCHED: "SUBMIT_JOB_SCHED",
SUBMIT_JOB_EPOCH: "SUBMIT_JOB_EPOCH",
SUBMIT_REDUCE_JOB: "SUBMIT_REDUCE_JOB",
SUBMIT_REDUCE_JOB_BACKGROUND: "SUBMIT_REDUCE_JOB_BACKGROUND",
GRAB_JOB_ALL: "GRAB_JOB_ALL",
JOB_ASSIGN_ALL: "JOB_ASSIGN_ALL",
GET_STATUS_UNIQUE: "GET_STATUS_UNIQUE",
STATUS_RES_UNIQUE: "STATUS_RES_UNIQUE",
}
// Valid checks if the packet type is valid
func (packetType PacketType) Valid() bool {
return packetType >= PacketTypeMin && packetType <= PacketTypeMax
}
func (packetType PacketType) String() string {
name, ok := packetTypeNames[packetType]
if !ok {
return "UNKNOWN"
}
return name
}
// msgType is the combination of magic code and packet type
type msgType uint16
// msgAllowedRoles holds valid role types for each msg type
var msgAllowedRoles = make(map[msgType]RoleType)
var msgArgsLens map[PacketType]int
func calcMsgType(magicType MagicType, packetType PacketType) msgType {
return msgType(magicType)<<8 + msgType(packetType)
}
func putAllowedRoles(magicType MagicType, packetType PacketType, roles RoleType) {
msgType := calcMsgType(magicType, packetType)
msgAllowedRoles[msgType] = roles
}
func init() {
putAllowedRoles(MagicReq, CAN_DO, RoleWorker)
putAllowedRoles(MagicReq, CANT_DO, RoleWorker)
putAllowedRoles(MagicReq, RESET_ABILITIES, RoleWorker)
putAllowedRoles(MagicReq, PRE_SLEEP, RoleWorker)
putAllowedRoles(MagicRes, NOOP, RoleWorker)
putAllowedRoles(MagicReq, SUBMIT_JOB, RoleClient)
putAllowedRoles(MagicRes, JOB_CREATED, RoleClient)
putAllowedRoles(MagicReq, GRAB_JOB, RoleWorker)
putAllowedRoles(MagicRes, NO_JOB, RoleWorker)
putAllowedRoles(MagicRes, JOB_ASSIGN, RoleWorker)
putAllowedRoles(MagicReq, WORK_STATUS, RoleWorker)
putAllowedRoles(MagicRes, WORK_STATUS, RoleClient)
putAllowedRoles(MagicReq, WORK_COMPLETE, RoleWorker)
putAllowedRoles(MagicRes, WORK_COMPLETE, RoleClient)
putAllowedRoles(MagicReq, WORK_FAIL, RoleWorker)
putAllowedRoles(MagicRes, WORK_FAIL, RoleClient)
putAllowedRoles(MagicReq, GET_STATUS, RoleClient)
putAllowedRoles(MagicReq, ECHO_REQ, RoleWorkerAndClient)
putAllowedRoles(MagicRes, ECHO_RES, RoleWorkerAndClient)
putAllowedRoles(MagicReq, SUBMIT_JOB_BG, RoleClient)
putAllowedRoles(MagicRes, ERROR, RoleWorkerAndClient)
putAllowedRoles(MagicRes, STATUS_RES, RoleClient)
putAllowedRoles(MagicReq, SUBMIT_JOB_HIGH, RoleClient)
putAllowedRoles(MagicReq, SET_CLIENT_ID, RoleWorker)
putAllowedRoles(MagicReq, CAN_DO_TIMEOUT, RoleWorker)
putAllowedRoles(MagicReq, ALL_YOURS, RoleWorker)
putAllowedRoles(MagicReq, WORK_EXCEPTION, RoleWorker)
putAllowedRoles(MagicRes, WORK_EXCEPTION, RoleClient)
putAllowedRoles(MagicReq, OPTION_REQ, RoleWorkerAndClient)
putAllowedRoles(MagicRes, OPTION_RES, RoleWorkerAndClient)
putAllowedRoles(MagicReq, WORK_DATA, RoleWorker)
putAllowedRoles(MagicRes, WORK_DATA, RoleClient)
putAllowedRoles(MagicReq, WORK_WARNING, RoleWorker)
putAllowedRoles(MagicRes, WORK_WARNING, RoleClient)
putAllowedRoles(MagicReq, GRAB_JOB_UNIQ, RoleWorker)
putAllowedRoles(MagicReq, JOB_ASSIGN_UNIQ, RoleWorker)
putAllowedRoles(MagicReq, SUBMIT_JOB_HIGH_BG, RoleClient)
putAllowedRoles(MagicReq, SUBMIT_JOB_LOW, RoleClient)
putAllowedRoles(MagicReq, SUBMIT_JOB_LOW_BG, RoleClient)
putAllowedRoles(MagicReq, SUBMIT_JOB_SCHED, RoleClient)
putAllowedRoles(MagicReq, SUBMIT_JOB_EPOCH, RoleClient)
putAllowedRoles(MagicReq, SUBMIT_REDUCE_JOB, RoleClient)
putAllowedRoles(MagicReq, SUBMIT_REDUCE_JOB_BACKGROUND, RoleClient)
putAllowedRoles(MagicReq, GRAB_JOB_ALL, RoleWorker)
putAllowedRoles(MagicRes, JOB_ASSIGN_ALL, RoleWorker)
putAllowedRoles(MagicReq, GET_STATUS_UNIQUE, RoleClient)
putAllowedRoles(MagicRes, STATUS_RES_UNIQUE, RoleClient)
msgArgsLens = map[PacketType]int{
SUBMIT_JOB: 3,
SUBMIT_JOB_BG: 3,
SUBMIT_JOB_HIGH: 3,
SUBMIT_JOB_HIGH_BG: 3,
SUBMIT_JOB_LOW: 3,
SUBMIT_JOB_LOW_BG: 3,
SUBMIT_REDUCE_JOB: 4,
SUBMIT_REDUCE_JOB_BACKGROUND: 4,
SUBMIT_JOB_SCHED: 8,
SUBMIT_JOB_EPOCH: 4,
GET_STATUS: 1,
GET_STATUS_UNIQUE: 1,
OPTION_REQ: 1,
JOB_CREATED: 1,
WORK_DATA: 2,
WORK_WARNING: 2,
WORK_STATUS: 3,
WORK_COMPLETE: 2,
WORK_FAIL: 1,
WORK_EXCEPTION: 2,
STATUS_RES: 5,
STATUS_RES_UNIQUE: 6,
OPTION_RES: 1,
CAN_DO: 1,
CAN_DO_TIMEOUT: 2,
CANT_DO: 1,
RESET_ABILITIES: 0,
PRE_SLEEP: 0,
GRAB_JOB: 0,
GRAB_JOB_UNIQ: 0,
GRAB_JOB_ALL: 0,
SET_CLIENT_ID: 1,
ALL_YOURS: 0,
}
}