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frame.go
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frame.go
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package hashgraph
import (
"bytes"
"sort"
"github.com/mosaicnetworks/babble/src/crypto"
"github.com/mosaicnetworks/babble/src/peers"
"github.com/ugorji/go/codec"
)
// Frame ...
type Frame struct {
Round int //RoundReceived
Peers []*peers.Peer
Roots map[string]*Root
Events []*FrameEvent //Events with RoundReceived = Round
PeerSets map[int][]*peers.Peer //[round] => Peers
}
// SortedFrameEvents ...
func (f *Frame) SortedFrameEvents() []*FrameEvent {
sorted := SortedFrameEvents{}
for _, r := range f.Roots {
sorted = append(sorted, r.Events...)
}
sorted = append(sorted, f.Events...)
sort.Sort(sorted)
return sorted
}
//Marshal - json encoding of Frame
func (f *Frame) Marshal() ([]byte, error) {
b := new(bytes.Buffer)
jh := new(codec.JsonHandle)
jh.Canonical = true
enc := codec.NewEncoder(b, jh)
if err := enc.Encode(f); err != nil {
return nil, err
}
return b.Bytes(), nil
}
// Unmarshal ...
func (f *Frame) Unmarshal(data []byte) error {
b := bytes.NewBuffer(data)
jh := new(codec.JsonHandle)
jh.Canonical = true
dec := codec.NewDecoder(b, jh)
if err := dec.Decode(f); err != nil {
return err
}
return nil
}
// Hash ...
func (f *Frame) Hash() ([]byte, error) {
hashBytes, err := f.Marshal()
if err != nil {
return nil, err
}
return crypto.SHA256(hashBytes), nil
}