package mainnet import ( "bytes" "fmt" "io" "log" "os" "path/filepath" "runtime" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/rawdb" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/rlp" ) const LatestBlock uint = 3 var blocks []*types.Block // LoadBlocks loads fixture blocks up to and including the passed height or the highest available block func GetBlocks() []*types.Block { if blocks != nil { return blocks } db := rawdb.NewMemoryDatabase() genesisBlock := core.DefaultGenesisBlock().MustCommit(db) genRLP, err := rlp.EncodeToBytes(genesisBlock) if err != nil { log.Fatal(err) } block0RLP, err := loadBlockRLP("./block0_rlp") if err != nil { panic(err) } if !bytes.Equal(genRLP, block0RLP) { panic("mainnet genesis blocks do not match") } blocks := make([]*types.Block, LatestBlock+1) blocks[0] = new(types.Block) rlp.DecodeBytes(block0RLP, blocks[0]) for i := uint(1); i <= LatestBlock; i++ { blockRLP, err := loadBlockRLP(fmt.Sprintf("./block%d_rlp", i)) if err != nil { panic(err) } blocks[i] = new(types.Block) rlp.DecodeBytes(blockRLP, blocks[i]) } return blocks } func loadBlockRLP(filename string) ([]byte, error) { _, thisPath, _, ok := runtime.Caller(0) if !ok { panic("could not get function source path") } path := filepath.Join(filepath.Dir(thisPath), filename) f, err := os.Open(path) if err != nil { return nil, err } defer f.Close() blockRLP, err := io.ReadAll(f) if err != nil { return nil, err } return blockRLP, nil }