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phase1packet.go
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phase1packet.go
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/*
* Copyright 2018 Insolar
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package packets
import (
"github.com/insolar/insolar/core"
"github.com/insolar/insolar/network/transport/packet/types"
"github.com/pkg/errors"
)
type Phase1Packet struct {
// -------------------- Header
packetHeader PacketHeader
// -------------------- Section 1 ( Pulse )
pulseData PulseDataExt // optional
proofNodePulse NodePulseProof
// -------------------- Section 2 ( Claims ) ( optional )
claims []ReferendumClaim
// --------------------
// signature contains signature of Header + Section 1 + Section 2
Signature [SignatureLength]byte
}
func NewPhase1Packet() *Phase1Packet {
return &Phase1Packet{}
}
func (p1p *Phase1Packet) hasPulseDataExt() bool { // nolint: megacheck
return p1p.packetHeader.f00
}
func (p1p *Phase1Packet) hasSection2() bool {
return p1p.packetHeader.f01
}
func (p1p *Phase1Packet) SetPacketHeader(header *RoutingHeader) error {
if header.PacketType != types.Phase1 {
return errors.New("Phase1Packet.SetPacketHeader: wrong packet type")
}
p1p.packetHeader.setRoutingFields(header, Phase1)
return nil
}
func (p1p *Phase1Packet) GetPulseNumber() core.PulseNumber {
return core.PulseNumber(p1p.packetHeader.Pulse)
}
func (p1p *Phase1Packet) GetPulse() core.Pulse {
//TODO: need convert method with pulse signature check
return core.Pulse{
PulseNumber: core.PulseNumber(p1p.packetHeader.Pulse),
Entropy: p1p.pulseData.Entropy,
}
}
func (p1p *Phase1Packet) GetPulseProof() *NodePulseProof {
return &p1p.proofNodePulse
}
func (p1p *Phase1Packet) GetPacketHeader() (*RoutingHeader, error) {
header := &RoutingHeader{}
if p1p.packetHeader.PacketT != Phase1 {
return nil, errors.New("Phase1Packet.GetPacketHeader: wrong packet type")
}
header.PacketType = types.Phase1
header.OriginID = p1p.packetHeader.OriginNodeID
header.TargetID = p1p.packetHeader.TargetNodeID
return header, nil
}
// SetPulseProof sets PulseProof and check struct fields len, returns error if invalid len
func (p1p *Phase1Packet) SetPulseProof(proofStateHash, proofSignature []byte) error {
if len(proofStateHash) == HashLength && len(proofSignature) == SignatureLength {
copy(p1p.proofNodePulse.NodeStateHash[:], proofStateHash[:HashLength])
copy(p1p.proofNodePulse.NodeSignature[:], proofSignature[:SignatureLength])
return nil
}
return errors.New("invalid proof fields len")
}
// AddClaim adds claim if phase1Packet has space for it, otherwise returns error
func (p1p *Phase1Packet) AddClaim(claim ReferendumClaim) error {
getClaimSize := func(claims ...ReferendumClaim) int {
result := 0
for _, cl := range claims {
result += int(getClaimWithHeaderSize(cl))
result += claimHeaderSize
}
return result
}
claimSize := getClaimSize(append(p1p.claims, claim)...)
if claimSize > phase1PacketSizeForClaims {
return errors.New("No space for claim")
}
p1p.claims = append(p1p.claims, claim)
p1p.packetHeader.f01 = true
return nil
}
func (p1p *Phase1Packet) GetClaims() []ReferendumClaim {
return p1p.claims
}
func (ph *PacketHeader) setRoutingFields(header *RoutingHeader, packetType PacketType) {
ph.TargetNodeID = header.TargetID
ph.OriginNodeID = header.OriginID
ph.HasRouting = true
ph.PacketT = packetType
}