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86 lines
2.1 KiB
86 lines
2.1 KiB
/* This module keeps all struct used as singleton */
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package utils
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import (
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"io"
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"os"
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"sync"
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"sync/atomic"
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"github.com/ethereum/go-ethereum/log"
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)
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var (
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// Validator ID
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validatorIDInstance *UniqueValidatorID
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onceForUniqueValidatorID sync.Once
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// Global port and ip for logging.
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port string
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ip string
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// Logging
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logInstance log.Logger
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glogger *log.GlogHandler // top-level handler
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logHandlers []log.Handler // sub handlers of glogger
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logVerbosity log.Lvl
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onceForLog sync.Once
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)
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// SetLogContext used to print out loggings of node with port and ip.
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// Every instance (node, txgen, etc..) needs to set this for logging.
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func SetLogContext(_port, _ip string) {
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port = _port
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ip = _ip
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}
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// SetLogVerbosity specifies the verbosity of global logger
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func SetLogVerbosity(verbosity log.Lvl) {
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logVerbosity = verbosity
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if glogger != nil {
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glogger.Verbosity(logVerbosity)
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}
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}
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// AddLogHandler add a log handler
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func AddLogHandler(handler log.Handler) {
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logHandlers = append(logHandlers, handler)
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if glogger != nil {
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multiHandler := log.MultiHandler(logHandlers...)
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glogger.SetHandler(multiHandler)
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}
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}
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// UniqueValidatorID defines the structure of unique validator ID
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type UniqueValidatorID struct {
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uniqueID uint32
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}
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// GetUniqueValidatorIDInstance returns a singleton instance
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func GetUniqueValidatorIDInstance() *UniqueValidatorID {
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onceForUniqueValidatorID.Do(func() {
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validatorIDInstance = &UniqueValidatorID{
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uniqueID: 0,
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}
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})
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return validatorIDInstance
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}
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// GetUniqueID returns a unique ID and increment the internal variable
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func (s *UniqueValidatorID) GetUniqueID() uint32 {
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return atomic.AddUint32(&s.uniqueID, 1)
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}
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// GetLogInstance returns logging singleton.
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func GetLogInstance() log.Logger {
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onceForLog.Do(func() {
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ostream := log.StreamHandler(io.Writer(os.Stdout), log.TerminalFormat(false))
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logHandlers = append(logHandlers, ostream)
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multiHandler := log.MultiHandler(logHandlers...)
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glogger = log.NewGlogHandler(multiHandler)
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glogger.Verbosity(logVerbosity)
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logInstance = log.New("port", port, "ip", ip)
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logInstance.SetHandler(glogger)
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log.Root().SetHandler(glogger)
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})
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return logInstance
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}
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