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175 lines
5.4 KiB
175 lines
5.4 KiB
package types
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import (
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"errors"
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"fmt"
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"time"
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abci "github.com/tendermint/tendermint/abci/types"
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"github.com/tendermint/tendermint/crypto/tmhash"
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tmproto "github.com/tendermint/tendermint/proto/types"
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)
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const (
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// MaxBlockSizeBytes is the maximum permitted size of the blocks.
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MaxBlockSizeBytes = 104857600 // 100MB
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// BlockPartSizeBytes is the size of one block part.
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BlockPartSizeBytes uint32 = 65536 // 64kB
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// MaxBlockPartsCount is the maximum number of block parts.
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MaxBlockPartsCount = (MaxBlockSizeBytes / BlockPartSizeBytes) + 1
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// Restrict the upper bound of the amount of evidence (uses uint16 for safe conversion)
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MaxEvidencePerBlock = 65535
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)
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// DefaultConsensusParams returns a default ConsensusParams.
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func DefaultConsensusParams() *tmproto.ConsensusParams {
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return &tmproto.ConsensusParams{
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Block: DefaultBlockParams(),
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Evidence: DefaultEvidenceParams(),
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Validator: DefaultValidatorParams(),
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}
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}
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// DefaultBlockParams returns a default BlockParams.
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func DefaultBlockParams() tmproto.BlockParams {
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return tmproto.BlockParams{
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MaxBytes: 22020096, // 21MB
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MaxGas: -1,
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TimeIotaMs: 1000, // 1s
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}
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}
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// DefaultEvidenceParams Params returns a default EvidenceParams.
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func DefaultEvidenceParams() tmproto.EvidenceParams {
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return tmproto.EvidenceParams{
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MaxAgeNumBlocks: 100000, // 27.8 hrs at 1block/s
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MaxAgeDuration: 48 * time.Hour,
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MaxNum: 50,
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}
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}
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// DefaultValidatorParams returns a default ValidatorParams, which allows
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// only ed25519 pubkeys.
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func DefaultValidatorParams() tmproto.ValidatorParams {
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return tmproto.ValidatorParams{
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PubKeyTypes: []string{ABCIPubKeyTypeEd25519},
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}
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}
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func IsValidPubkeyType(params tmproto.ValidatorParams, pubkeyType string) bool {
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for i := 0; i < len(params.PubKeyTypes); i++ {
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if params.PubKeyTypes[i] == pubkeyType {
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return true
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}
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}
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return false
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}
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// Validate validates the ConsensusParams to ensure all values are within their
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// allowed limits, and returns an error if they are not.
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func ValidateConsensusParams(params tmproto.ConsensusParams) error {
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if params.Block.MaxBytes <= 0 {
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return fmt.Errorf("block.MaxBytes must be greater than 0. Got %d",
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params.Block.MaxBytes)
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}
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if params.Block.MaxBytes > MaxBlockSizeBytes {
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return fmt.Errorf("block.MaxBytes is too big. %d > %d",
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params.Block.MaxBytes, MaxBlockSizeBytes)
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}
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if params.Block.MaxGas < -1 {
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return fmt.Errorf("block.MaxGas must be greater or equal to -1. Got %d",
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params.Block.MaxGas)
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}
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if params.Block.TimeIotaMs <= 0 {
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return fmt.Errorf("block.TimeIotaMs must be greater than 0. Got %v",
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params.Block.TimeIotaMs)
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}
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if params.Evidence.MaxAgeNumBlocks <= 0 {
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return fmt.Errorf("evidenceParams.MaxAgeNumBlocks must be greater than 0. Got %d",
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params.Evidence.MaxAgeNumBlocks)
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}
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if params.Evidence.MaxAgeDuration <= 0 {
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return fmt.Errorf("evidenceParams.MaxAgeDuration must be grater than 0 if provided, Got %v",
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params.Evidence.MaxAgeDuration)
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}
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if params.Evidence.MaxNum > MaxEvidencePerBlock {
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return fmt.Errorf("evidenceParams.MaxNumEvidence is greater than upper bound, %d > %d",
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params.Evidence.MaxNum, MaxEvidencePerBlock)
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}
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if int64(params.Evidence.MaxNum)*MaxEvidenceBytes > params.Block.MaxBytes {
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return fmt.Errorf("total possible evidence size is bigger than block.MaxBytes, %d > %d",
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int64(params.Evidence.MaxNum)*MaxEvidenceBytes, params.Block.MaxBytes)
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}
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if len(params.Validator.PubKeyTypes) == 0 {
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return errors.New("len(Validator.PubKeyTypes) must be greater than 0")
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}
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// Check if keyType is a known ABCIPubKeyType
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for i := 0; i < len(params.Validator.PubKeyTypes); i++ {
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keyType := params.Validator.PubKeyTypes[i]
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if _, ok := ABCIPubKeyTypesToAminoNames[keyType]; !ok {
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return fmt.Errorf("params.Validator.PubKeyTypes[%d], %s, is an unknown pubkey type",
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i, keyType)
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}
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}
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return nil
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}
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// Hash returns a hash of a subset of the parameters to store in the block header.
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// Only the Block.MaxBytes and Block.MaxGas are included in the hash.
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// This allows the ConsensusParams to evolve more without breaking the block
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// protocol. No need for a Merkle tree here, just a small struct to hash.
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func HashConsensusParams(params tmproto.ConsensusParams) []byte {
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hasher := tmhash.New()
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hp := tmproto.HashedParams{
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BlockMaxBytes: params.Block.MaxBytes,
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BlockMaxGas: params.Block.MaxGas,
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}
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bz, err := hp.Marshal()
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if err != nil {
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panic(err)
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}
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hasher.Write(bz)
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return hasher.Sum(nil)
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}
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// Update returns a copy of the params with updates from the non-zero fields of p2.
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// NOTE: note: must not modify the original
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func UpdateConsensusParams(params tmproto.ConsensusParams, params2 *abci.ConsensusParams) tmproto.ConsensusParams {
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res := params // explicit copy
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if params2 == nil {
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return res
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}
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// we must defensively consider any structs may be nil
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if params2.Block != nil {
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res.Block.MaxBytes = params2.Block.MaxBytes
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res.Block.MaxGas = params2.Block.MaxGas
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}
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if params2.Evidence != nil {
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res.Evidence.MaxAgeNumBlocks = params2.Evidence.MaxAgeNumBlocks
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res.Evidence.MaxAgeDuration = params2.Evidence.MaxAgeDuration
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res.Evidence.MaxNum = params2.Evidence.MaxNum
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}
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if params2.Validator != nil {
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// Copy params2.Validator.PubkeyTypes, and set result's value to the copy.
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// This avoids having to initialize the slice to 0 values, and then write to it again.
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res.Validator.PubKeyTypes = append([]string{}, params2.Validator.PubKeyTypes...)
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}
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return res
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}
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