package types import ( abci "github.com/tendermint/abci/types" cmn "github.com/tendermint/tmlibs/common" "github.com/tendermint/tmlibs/merkle" ) const ( MaxBlockSizeBytes = 104857600 // 100MB ) // ConsensusParams contains consensus critical parameters // that determine the validity of blocks. type ConsensusParams struct { BlockSize `json:"block_size_params"` TxSize `json:"tx_size_params"` BlockGossip `json:"block_gossip_params"` EvidenceParams `json:"evidence_params"` } // BlockSize contain limits on the block size. type BlockSize struct { MaxBytes int `json:"max_bytes"` // NOTE: must not be 0 nor greater than 100MB MaxTxs int `json:"max_txs"` MaxGas int64 `json:"max_gas"` } // TxSize contain limits on the tx size. type TxSize struct { MaxBytes int `json:"max_bytes"` MaxGas int64 `json:"max_gas"` } // BlockGossip determine consensus critical elements of how blocks are gossiped type BlockGossip struct { BlockPartSizeBytes int `json:"block_part_size_bytes"` // NOTE: must not be 0 } // EvidenceParams determine how we handle evidence of malfeasance type EvidenceParams struct { MaxAge int64 `json:"max_age"` // only accept new evidence more recent than this } // DefaultConsensusParams returns a default ConsensusParams. func DefaultConsensusParams() *ConsensusParams { return &ConsensusParams{ DefaultBlockSize(), DefaultTxSize(), DefaultBlockGossip(), DefaultEvidenceParams(), } } // DefaultBlockSize returns a default BlockSize. func DefaultBlockSize() BlockSize { return BlockSize{ MaxBytes: 22020096, // 21MB MaxTxs: 100000, MaxGas: -1, } } // DefaultTxSize returns a default TxSize. func DefaultTxSize() TxSize { return TxSize{ MaxBytes: 10240, // 10kB MaxGas: -1, } } // DefaultBlockGossip returns a default BlockGossip. func DefaultBlockGossip() BlockGossip { return BlockGossip{ BlockPartSizeBytes: 65536, // 64kB, } } // DefaultEvidence Params returns a default EvidenceParams. func DefaultEvidenceParams() EvidenceParams { return EvidenceParams{ MaxAge: 100000, // 27.8 hrs at 1block/s } } // Validate validates the ConsensusParams to ensure all values // are within their allowed limits, and returns an error if they are not. func (params *ConsensusParams) Validate() error { // ensure some values are greater than 0 if params.BlockSize.MaxBytes <= 0 { return cmn.NewError("BlockSize.MaxBytes must be greater than 0. Got %d", params.BlockSize.MaxBytes) } if params.BlockGossip.BlockPartSizeBytes <= 0 { return cmn.NewError("BlockGossip.BlockPartSizeBytes must be greater than 0. Got %d", params.BlockGossip.BlockPartSizeBytes) } // ensure blocks aren't too big if params.BlockSize.MaxBytes > MaxBlockSizeBytes { return cmn.NewError("BlockSize.MaxBytes is too big. %d > %d", params.BlockSize.MaxBytes, MaxBlockSizeBytes) } return nil } // Hash returns a merkle hash of the parameters to store // in the block header func (params *ConsensusParams) Hash() []byte { return merkle.SimpleHashFromMap(map[string]merkle.Hasher{ "block_gossip_part_size_bytes": aminoHasher(params.BlockGossip.BlockPartSizeBytes), "block_size_max_bytes": aminoHasher(params.BlockSize.MaxBytes), "block_size_max_gas": aminoHasher(params.BlockSize.MaxGas), "block_size_max_txs": aminoHasher(params.BlockSize.MaxTxs), "tx_size_max_bytes": aminoHasher(params.TxSize.MaxBytes), "tx_size_max_gas": aminoHasher(params.TxSize.MaxGas), }) } // Update returns a copy of the params with updates from the non-zero fields of p2. // NOTE: note: must not modify the original func (params ConsensusParams) Update(params2 *abci.ConsensusParams) ConsensusParams { res := params // explicit copy if params2 == nil { return res } // we must defensively consider any structs may be nil // XXX: it's cast city over here. It's ok because we only do int32->int // but still, watch it champ. if params2.BlockSize != nil { if params2.BlockSize.MaxBytes > 0 { res.BlockSize.MaxBytes = int(params2.BlockSize.MaxBytes) } if params2.BlockSize.MaxTxs > 0 { res.BlockSize.MaxTxs = int(params2.BlockSize.MaxTxs) } if params2.BlockSize.MaxGas > 0 { res.BlockSize.MaxGas = params2.BlockSize.MaxGas } } if params2.TxSize != nil { if params2.TxSize.MaxBytes > 0 { res.TxSize.MaxBytes = int(params2.TxSize.MaxBytes) } if params2.TxSize.MaxGas > 0 { res.TxSize.MaxGas = params2.TxSize.MaxGas } } if params2.BlockGossip != nil { if params2.BlockGossip.BlockPartSizeBytes > 0 { res.BlockGossip.BlockPartSizeBytes = int(params2.BlockGossip.BlockPartSizeBytes) } } return res }