Fantom-foundation/go-lachesis

package poset

import (
    "github.com/Fantom-foundation/go-lachesis/hash"
    "github.com/Fantom-foundation/go-lachesis/inter"
    "github.com/Fantom-foundation/go-lachesis/inter/idx"
)

// EventSource is a callback for getting events from an external storage.
type EventSource interface {
    HasEvent(hash.Event) bool
    GetEvent(hash.Event) *inter.Event
    GetEventHeader(idx.Epoch, hash.Event) *inter.EventHeaderData
}

/*
 * Poset's methods:
 */

// GetEvent returns event.
func (p *Poset) GetEvent(h hash.Event) *Event {
    e := p.input.GetEvent(h)
    if e == nil {
        p.Log.Crit("Got unsaved event", "event", h.String())
    }
    return &Event{
        Event: e,
    }
}

// GetEventHeader returns event header.
func (p *Poset) GetEventHeader(epoch idx.Epoch, h hash.Event) *inter.EventHeaderData {
    return p.input.GetEventHeader(epoch, h)
}