package chain import ( "encoding/json" "fmt" block "github.com/ipfs/go-block-format" "github.com/ipfs/go-cid" cbor "github.com/ipfs/go-ipld-cbor" ipld "github.com/ipfs/go-ipld-format" "github.com/multiformats/go-multihash" "github.com/polydawn/refmt/obj/atlas" "github.com/filecoin-project/go-lotus/chain/address" "github.com/filecoin-project/go-lotus/chain/types" ) func init() { ipld.Register(0x1f, IpldDecode) cbor.RegisterCborType(BlockMsg{}) ///* //*/ cbor.RegisterCborType(atlas.BuildEntry(SignedMessage{}).UseTag(45).Transform(). TransformMarshal(atlas.MakeMarshalTransformFunc( func(sm SignedMessage) ([]interface{}, error) { return []interface{}{ sm.Message, sm.Signature, }, nil })). TransformUnmarshal(atlas.MakeUnmarshalTransformFunc( func(x []interface{}) (SignedMessage, error) { sigb, ok := x[1].([]byte) if !ok { return SignedMessage{}, fmt.Errorf("signature in signed message was not bytes") } sig, err := types.SignatureFromBytes(sigb) if err != nil { return SignedMessage{}, err } return SignedMessage{ Message: x[0].(types.Message), Signature: sig, }, nil })). Complete()) cbor.RegisterCborType(atlas.BuildEntry(BlockHeader{}).UseTag(43).Transform(). TransformMarshal(atlas.MakeMarshalTransformFunc( func(blk BlockHeader) ([]interface{}, error) { if blk.Tickets == nil { blk.Tickets = []Ticket{} } if blk.Parents == nil { blk.Parents = []cid.Cid{} } return []interface{}{ blk.Miner.Bytes(), blk.Tickets, blk.ElectionProof, blk.Parents, blk.ParentWeight, blk.Height, blk.StateRoot, blk.Messages, blk.MessageReceipts, }, nil })). TransformUnmarshal(atlas.MakeUnmarshalTransformFunc( func(arr []interface{}) (BlockHeader, error) { miner, err := address.NewFromBytes(arr[0].([]byte)) if err != nil { return BlockHeader{}, err } tickets := []Ticket{} ticketarr, _ := arr[1].([]interface{}) for _, t := range ticketarr { tickets = append(tickets, Ticket(t.([]byte))) } electionProof, _ := arr[2].([]byte) parents := []cid.Cid{} parentsArr, _ := arr[3].([]interface{}) for _, p := range parentsArr { parents = append(parents, p.(cid.Cid)) } parentWeight := arr[4].(types.BigInt) height := arr[5].(uint64) stateRoot := arr[6].(cid.Cid) msgscid := arr[7].(cid.Cid) recscid := arr[8].(cid.Cid) return BlockHeader{ Miner: miner, Tickets: tickets, ElectionProof: electionProof, Parents: parents, ParentWeight: parentWeight, Height: height, StateRoot: stateRoot, Messages: msgscid, MessageReceipts: recscid, }, nil })). Complete()) } type BlockHeader struct { Miner address.Address Tickets []Ticket ElectionProof []byte Parents []cid.Cid ParentWeight types.BigInt Height uint64 StateRoot cid.Cid Messages cid.Cid BLSAggregate types.Signature MessageReceipts cid.Cid } func (b *BlockHeader) ToStorageBlock() (block.Block, error) { data, err := b.Serialize() if err != nil { return nil, err } pref := cid.NewPrefixV1(0x1f, multihash.BLAKE2B_MIN+31) c, err := pref.Sum(data) if err != nil { return nil, err } return block.NewBlockWithCid(data, c) } func (b *BlockHeader) Cid() cid.Cid { sb, err := b.ToStorageBlock() if err != nil { panic(err) } return sb.Cid() } func DecodeBlock(b []byte) (*BlockHeader, error) { var blk BlockHeader if err := cbor.DecodeInto(b, &blk); err != nil { return nil, err } return &blk, nil } func (blk *BlockHeader) Serialize() ([]byte, error) { return cbor.DumpObject(blk) } func (m *SignedMessage) ToStorageBlock() (block.Block, error) { data, err := m.Serialize() if err != nil { return nil, err } pref := cid.NewPrefixV1(0x1f, multihash.BLAKE2B_MIN+31) c, err := pref.Sum(data) if err != nil { return nil, err } return block.NewBlockWithCid(data, c) } func (m *SignedMessage) Cid() cid.Cid { sb, err := m.ToStorageBlock() if err != nil { panic(err) } return sb.Cid() } type SignedMessage struct { Message types.Message Signature types.Signature } func DecodeSignedMessage(data []byte) (*SignedMessage, error) { var msg SignedMessage if err := cbor.DecodeInto(data, &msg); err != nil { return nil, err } return &msg, nil } func (sm *SignedMessage) Serialize() ([]byte, error) { data, err := cbor.DumpObject(sm) if err != nil { return nil, err } return data, nil } type TipSet struct { cids []cid.Cid blks []*BlockHeader height uint64 } // why didnt i just export the fields? Because the struct has methods with the // same names already type expTipSet struct { Cids []cid.Cid Blocks []*BlockHeader Height uint64 } func (ts *TipSet) MarshalJSON() ([]byte, error) { return json.Marshal(expTipSet{ Cids: ts.cids, Blocks: ts.blks, Height: ts.height, }) } func (ts *TipSet) UnmarshalJSON(b []byte) error { var ets expTipSet if err := json.Unmarshal(b, &ets); err != nil { return err } ts.cids = ets.Cids ts.blks = ets.Blocks ts.height = ets.Height return nil } func NewTipSet(blks []*BlockHeader) (*TipSet, error) { var ts TipSet ts.cids = []cid.Cid{blks[0].Cid()} ts.blks = blks for _, b := range blks[1:] { if b.Height != blks[0].Height { return nil, fmt.Errorf("cannot create tipset with mismatching heights") } ts.cids = append(ts.cids, b.Cid()) } ts.height = blks[0].Height return &ts, nil } func (ts *TipSet) Cids() []cid.Cid { return ts.cids } func (ts *TipSet) Height() uint64 { return ts.height } func (ts *TipSet) Weight() uint64 { panic("if tipsets are going to have weight on them, we need to wire that through") } func (ts *TipSet) Parents() []cid.Cid { return ts.blks[0].Parents } func (ts *TipSet) Blocks() []*BlockHeader { return ts.blks } func (ts *TipSet) Equals(ots *TipSet) bool { if len(ts.blks) != len(ots.blks) { return false } for i, b := range ts.blks { if b.Cid() != ots.blks[i].Cid() { return false } } return true } type Ticket []byte type ElectionProof []byte func IpldDecode(block block.Block) (ipld.Node, error) { var i interface{} if err := cbor.DecodeInto(block.RawData(), &i); err != nil { panic(err) } fmt.Println("IPLD DECODE!") return &filecoinIpldNode{i}, nil } type filecoinIpldNode struct { val interface{} } func (f *filecoinIpldNode) Cid() cid.Cid { switch t := f.val.(type) { case BlockHeader: return t.Cid() case SignedMessage: return t.Cid() default: panic("whats going on") } } func (f *filecoinIpldNode) Copy() ipld.Node { panic("no") } func (f *filecoinIpldNode) Links() []*ipld.Link { switch t := f.val.(type) { case BlockHeader: fmt.Println("block links!", t.StateRoot) return []*ipld.Link{ { Cid: t.StateRoot, }, { Cid: t.Messages, }, { Cid: t.MessageReceipts, }, } case types.Message: return nil default: panic("whats going on") } } func (f *filecoinIpldNode) Resolve(path []string) (interface{}, []string, error) { /* switch t := f.val.(type) { case Block: switch path[0] { } case Message: default: panic("whats going on") } */ panic("please dont call this") } // Tree lists all paths within the object under 'path', and up to the given depth. // To list the entire object (similar to `find .`) pass "" and -1 func (f *filecoinIpldNode) Tree(path string, depth int) []string { panic("dont call this either") } func (f *filecoinIpldNode) ResolveLink(path []string) (*ipld.Link, []string, error) { panic("please no") } func (f *filecoinIpldNode) Stat() (*ipld.NodeStat, error) { panic("dont call this") } func (f *filecoinIpldNode) Size() (uint64, error) { panic("dont call this") } func (f *filecoinIpldNode) Loggable() map[string]interface{} { return nil } func (f *filecoinIpldNode) RawData() []byte { switch t := f.val.(type) { case BlockHeader: sb, err := t.ToStorageBlock() if err != nil { panic(err) } return sb.RawData() case SignedMessage: sb, err := t.ToStorageBlock() if err != nil { panic(err) } return sb.RawData() default: panic("whats going on") } } func (f *filecoinIpldNode) String() string { return "cats" } type FullBlock struct { Header *BlockHeader Messages []*SignedMessage } func (fb *FullBlock) Cid() cid.Cid { return fb.Header.Cid() } type BlockMsg struct { Header *BlockHeader Messages []cid.Cid } func DecodeBlockMsg(b []byte) (*BlockMsg, error) { var bm BlockMsg if err := cbor.DecodeInto(b, &bm); err != nil { return nil, err } return &bm, nil } func (bm *BlockMsg) Cid() cid.Cid { return bm.Header.Cid() } func (bm *BlockMsg) Serialize() ([]byte, error) { return cbor.DumpObject(bm) }