committee

package
v0.2.6 Latest Latest
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 Go to latest Published: Oct 8, 2019 License: GPL-3.0 Imports: 27 Imported by: 15

Documentation

Index

Constants

View Source 
const BucketRecordQuery = "SELECT id, start_time, duration, amount, decay, voter, candidate FROM %s WHERE id IN (%s)"

BucketRecordQuery is query to return buckets by ids

View Source 
const InsertBucketsQuery = "INSERT OR IGNORE INTO %s (hash, start_time, duration, amount, decay, voter, candidate) VALUES (?, ?, ?, ?, ?, ?, ?)"

InsertBucketsQuery is query to insert buckets

View Source 
const InsertBucketsQueryMySql = "INSERT IGNORE INTO %s (hash, start_time, duration, amount, decay, voter, candidate) VALUES (?, ?, ?, ?, ?, ?, ?)"
View Source 
const InsertRegistrationQuery = "" /* 127-byte string literal not displayed */

InsertRegistrationQuery is query to insert registrations

View Source 
const InsertRegistrationQueryMySql = "INSERT IGNORE INTO %s (hash, name, address, operator_address, reward_address, self_staking_weight) VALUES (?, ?, ?, ?, ?, ?)"
View Source 
const RegistrationQuery = "SELECT id, name, address, operator_address, reward_address, self_staking_weight FROM %s WHERE id IN (%s)"

RegistrationQuery is query to get registrations by ids

Variables

This section is empty.

Functions

func InsertBuckets added in v0.2.3 

func InsertBuckets(tableName string, driverName DRIVERTYPE, records interface{}, tx *sql.Tx) (frequencies map[hash.Hash256]int, err error)

InsertBuckets inserts bucket records into table by tx

func InsertRegistrations added in v0.2.3 

func InsertRegistrations(tableName string, driverName DRIVERTYPE, records interface{}, tx *sql.Tx) (frequencies map[hash.Hash256]int, err error)

InsertRegistrations inserts registration records into table by tx

func QueryBuckets added in v0.2.3 

func QueryBuckets(tableName string, frequencies map[int64]int, sdb *sql.DB, tx *sql.Tx) (interface{}, error)

QueryBuckets returns buckets by ids

func QueryRegistrations added in v0.2.3 

func QueryRegistrations(tableName string, frequencies map[int64]int, sdb *sql.DB, tx *sql.Tx) (interface{}, error)

QueryRegistrations get all registrations by ids

Types

type CalcGravityChainHeight added in v0.1.5 

type CalcGravityChainHeight func(uint64) (uint64, error)

CalcGravityChainHeight calculates the corresponding gravity chain height for an epoch

type Committee 

type Committee interface {
	// Start starts the committee service
	Start(context.Context) error
	// Stop stops the committee service
	Stop(context.Context) error
	// ResultByHeight returns the result on a specific ethereum height
	ResultByHeight(uint64) (*types.ElectionResult, error)
	//RawDataByHeight returns the bucket list and registration list and mintTime
	RawDataByHeight(uint64) ([]*types.Bucket, []*types.Registration, time.Time, error)
	// HeightByTime returns the nearest result before time
	HeightByTime(time.Time) (uint64, error)
	// LatestHeight returns the height with latest result
	LatestHeight() uint64
	// Status returns the committee status
	Status() STATUS
	// PutNativePollByEpoch puts one native poll record on IoTeX chain
	PutNativePollByEpoch(uint64, time.Time, []*types.Bucket) error
	// NativeBucketsByEpoch returns a list of Bucket of a given epoch number
	NativeBucketsByEpoch(uint64) ([]*types.Bucket, error)
}

Committee defines an interface of an election committee It could be considered as a light state db of gravity chain, that

func NewCommittee 

func NewCommittee(archive PollArchive, cfg Config) (Committee, error)

NewCommittee creates a committee

type Config 

type Config struct {
	NumOfRetries               uint8    `yaml:"numOfRetries"`
	GravityChainAPIs           []string `yaml:"gravityChainAPIs"`
	GravityChainHeightInterval uint64   `yaml:"gravityChainHeightInterval"`
	GravityChainStartHeight    uint64   `yaml:"gravityChainStartHeight"`
	RegisterContractAddress    string   `yaml:"registerContractAddress"`
	StakingContractAddress     string   `yaml:"stakingContractAddress"`
	PaginationSize             uint8    `yaml:"paginationSize"`
	VoteThreshold              string   `yaml:"voteThreshold"`
	ScoreThreshold             string   `yaml:"scoreThreshold"`
	SelfStakingThreshold       string   `yaml:"selfStakingThreshold"`
	CacheSize                  uint32   `yaml:"cacheSize"`
	NumOfFetchInParallel       uint8    `yaml:"numOfFetchInParallel"`
	SkipManifiedCandidate      bool     `yaml:"skipManifiedCandidate"`
	GravityChainBatchSize      uint64   `yaml:"gravityChainBatchSize"`
}

Config defines the config of the committee

type DRIVERTYPE added in v0.2.6 

type DRIVERTYPE uint8

DRIVERTYPE represents the type of sql driver 

const (
	//SQLITE stands for a Sqlite driver
	SQLITE DRIVERTYPE = iota
	//MYSQL stands for a mysql driver
	MYSQL
)

type InsertRecordsFunc added in v0.2.3 

type InsertRecordsFunc func(string, DRIVERTYPE, interface{}, *sql.Tx) (map[hash.Hash256]int, error)

InsertRecordsFunc defines an api to insert records

type Operator added in v0.2.3 

type Operator interface {
	// CreateTables prepares the tables for the operator
	CreateTables(*sql.Tx) error
	// Get returns the value by height
	Get(uint64, *sql.DB, *sql.Tx) (interface{}, error)
	// Put writes value for height
	Put(uint64, interface{}, *sql.Tx) error
}

Operator defines an interface of operations on some tables in SQL DB

func NewBucketTableOperator added in v0.2.3 

func NewBucketTableOperator(tableName string, driverName DRIVERTYPE) (Operator, error)

NewBucketTableOperator creates an operator for bucket table

func NewRecordTableOperator added in v0.2.3 

func NewRecordTableOperator(
	tableName string,
	driverName DRIVERTYPE,
	insertRecordsFunc InsertRecordsFunc,
	queryRecordsFunc QueryRecordsFunc,
	recordTableCreation string,
) (Operator, error)

NewRecordTableOperator creates a new arch of poll

func NewRegistrationTableOperator added in v0.2.3 

func NewRegistrationTableOperator(tableName string, driverName DRIVERTYPE) (Operator, error)

NewRegistrationTableOperator create an operator for registration table

type PollArchive added in v0.2.3 

type PollArchive interface {
	HeightBefore(time.Time) (uint64, error)
	// Buckets returns a list of Bucket of a given height
	Buckets(uint64) ([]*types.Bucket, error)
	// NativeBuckets returns a list of Bucket of a given epoch number
	NativeBuckets(uint64) ([]*types.Bucket, error)
	// Registrations returns a list of Registration of a given height
	Registrations(uint64) ([]*types.Registration, error)
	// MintTime returns the mint time of a given height
	MintTime(uint64) (time.Time, error)
	// NativeMintTime returns the mint time of a given epoch number
	NativeMintTime(uint64) (time.Time, error)
	// PutPoll puts one poll record
	PutPoll(uint64, time.Time, []*types.Registration, []*types.Bucket) error
	// PutNativePoll puts one native poll record on IoTeX chain
	PutNativePoll(uint64, time.Time, []*types.Bucket) error
	// TipHeight returns the tip height stored in archive
	TipHeight() (uint64, error)
	// Start starts the archive
	Start(context.Context) error
	// Stop stops the archive
	Stop(context.Context) error
}

PollArchive stores registrations, buckets, and other data

func NewArchive added in v0.2.1 

func NewArchive(dbPath string, numOfRetries uint8, startHeight uint64, interval uint64) (PollArchive, error)

NewArchive creates a new archive of poll

type QueryRecordsFunc added in v0.2.3 

type QueryRecordsFunc func(string, map[int64]int, *sql.DB, *sql.Tx) (interface{}, error)

QueryRecordsFunc defines an api to query records

type Record added in v0.2.3 

type Record interface {
	Hash() (hash.Hash256, error)
}

Record defines a record

type STATUS added in v0.1.4 

type STATUS uint8

STATUS represents the status of committee 

const (
	// STARTING stands for a starting status
	STARTING STATUS = iota
	// ACTIVE stands for an active status
	ACTIVE
	// INACTIVE stands for an inactive status
	INACTIVE
)

type TimeTableOperator added in v0.2.3 

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

TimeTableOperator defines an operator on timetable

func NewTimeTableOperator added in v0.2.3 

func NewTimeTableOperator(tableName string, driverName DRIVERTYPE) *TimeTableOperator

NewTimeTableOperator returns an operator to time table

func (*TimeTableOperator) CreateTables added in v0.2.3 

func (operator *TimeTableOperator) CreateTables(tx *sql.Tx) (err error)

CreateTables prepares the tables for the operator

func (*TimeTableOperator) Get added in v0.2.3 

func (operator *TimeTableOperator) Get(height uint64, sdb *sql.DB, tx *sql.Tx) (interface{}, error)

Get returns the value by height

func (*TimeTableOperator) HeightBefore added in v0.2.3 

func (operator *TimeTableOperator) HeightBefore(ts time.Time, sdb *sql.DB, tx *sql.Tx) (height uint64, err error)

HeightBefore returns the Height before ts in the time table

func (*TimeTableOperator) Put added in v0.2.3 

func (operator *TimeTableOperator) Put(height uint64, value interface{}, tx *sql.Tx) error

Put writes value for height

func (*TimeTableOperator) TipHeight added in v0.2.3 

func (operator *TimeTableOperator) TipHeight(sdb *sql.DB, tx *sql.Tx) (uint64, error)

TipHeight returns the tip height in the time table

Source Files

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