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323 lines
9.8 KiB
323 lines
9.8 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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"github.com/tendermint/tendermint/crypto/ed25519"
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"github.com/tendermint/tendermint/crypto/secp256k1"
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"github.com/tendermint/tendermint/crypto/sr25519"
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"github.com/tendermint/tendermint/crypto/tmhash"
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tmstrings "github.com/tendermint/tendermint/libs/strings"
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tmproto "github.com/tendermint/tendermint/proto/tendermint/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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ABCIPubKeyTypeEd25519 = ed25519.KeyType
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ABCIPubKeyTypeSecp256k1 = secp256k1.KeyType
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ABCIPubKeyTypeSr25519 = sr25519.KeyType
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)
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var ABCIPubKeyTypesToNames = map[string]string{
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ABCIPubKeyTypeEd25519: ed25519.PubKeyName,
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ABCIPubKeyTypeSecp256k1: secp256k1.PubKeyName,
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ABCIPubKeyTypeSr25519: sr25519.PubKeyName,
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}
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// ConsensusParams contains consensus critical parameters that determine the
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// validity of blocks.
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type ConsensusParams struct {
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Block BlockParams `json:"block"`
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Evidence EvidenceParams `json:"evidence"`
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Validator ValidatorParams `json:"validator"`
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Version VersionParams `json:"version"`
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Synchrony SynchronyParams `json:"synchrony"`
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}
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// HashedParams is a subset of ConsensusParams.
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// It is amino encoded and hashed into
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// the Header.ConsensusHash.
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type HashedParams struct {
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BlockMaxBytes int64
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BlockMaxGas int64
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}
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// BlockParams define limits on the block size and gas plus minimum time
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// between blocks.
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type BlockParams struct {
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MaxBytes int64 `json:"max_bytes,string"`
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MaxGas int64 `json:"max_gas,string"`
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}
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// EvidenceParams determine how we handle evidence of malfeasance.
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type EvidenceParams struct {
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MaxAgeNumBlocks int64 `json:"max_age_num_blocks,string"` // only accept new evidence more recent than this
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MaxAgeDuration time.Duration `json:"max_age_duration,string"`
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MaxBytes int64 `json:"max_bytes,string"`
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}
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// ValidatorParams restrict the public key types validators can use.
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// NOTE: uses ABCI pubkey naming, not Amino names.
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type ValidatorParams struct {
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PubKeyTypes []string `json:"pub_key_types"`
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}
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type VersionParams struct {
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AppVersion uint64 `json:"app_version,string"`
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}
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// SynchronyParams influence the validity of block timestamps.
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// For more information on the relationship of the synchrony parameters to
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// block validity, see the Proposer-Based Timestamps specification:
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// https://github.com/tendermint/tendermint/blob/master/spec/consensus/proposer-based-timestamp/README.md
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type SynchronyParams struct {
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Precision time.Duration `json:"precision,string"`
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MessageDelay time.Duration `json:"message_delay,string"`
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}
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// DefaultConsensusParams returns a default ConsensusParams.
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func DefaultConsensusParams() *ConsensusParams {
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return &ConsensusParams{
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Block: DefaultBlockParams(),
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Evidence: DefaultEvidenceParams(),
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Validator: DefaultValidatorParams(),
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Version: DefaultVersionParams(),
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Synchrony: DefaultSynchronyParams(),
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}
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}
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// DefaultBlockParams returns a default BlockParams.
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func DefaultBlockParams() BlockParams {
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return BlockParams{
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MaxBytes: 22020096, // 21MB
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MaxGas: -1,
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}
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}
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// DefaultEvidenceParams returns a default EvidenceParams.
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func DefaultEvidenceParams() EvidenceParams {
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return 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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MaxBytes: 1048576, // 1MB
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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() ValidatorParams {
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return ValidatorParams{
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PubKeyTypes: []string{ABCIPubKeyTypeEd25519},
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}
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}
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func DefaultVersionParams() VersionParams {
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return VersionParams{
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AppVersion: 0,
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}
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}
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func DefaultSynchronyParams() SynchronyParams {
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// TODO(@wbanfield): Determine experimental values for these defaults
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// https://github.com/tendermint/tendermint/issues/7202
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return SynchronyParams{
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Precision: 500 * time.Millisecond,
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MessageDelay: 3 * time.Second,
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}
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}
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func (val *ValidatorParams) IsValidPubkeyType(pubkeyType string) bool {
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for i := 0; i < len(val.PubKeyTypes); i++ {
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if val.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 (params ConsensusParams) ValidateConsensusParams() 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.Evidence.MaxAgeNumBlocks <= 0 {
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return fmt.Errorf("evidence.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("evidence.MaxAgeDuration must be greater than 0 if provided, Got %v",
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params.Evidence.MaxAgeDuration)
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}
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if params.Evidence.MaxBytes > params.Block.MaxBytes {
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return fmt.Errorf("evidence.MaxBytesEvidence is greater than upper bound, %d > %d",
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params.Evidence.MaxBytes, params.Block.MaxBytes)
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}
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if params.Evidence.MaxBytes < 0 {
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return fmt.Errorf("evidence.MaxBytes must be non negative. Got: %d",
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params.Evidence.MaxBytes)
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}
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if params.Synchrony.MessageDelay <= 0 {
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return fmt.Errorf("synchrony.MessageDelay must be greater than 0. Got: %d",
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params.Synchrony.MessageDelay)
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}
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if params.Synchrony.Precision <= 0 {
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return fmt.Errorf("synchrony.Precision must be greater than 0. Got: %d",
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params.Synchrony.Precision)
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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 := ABCIPubKeyTypesToNames[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 (params ConsensusParams) HashConsensusParams() []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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_, err = hasher.Write(bz)
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if err != nil {
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panic(err)
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}
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return hasher.Sum(nil)
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}
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func (params *ConsensusParams) Equals(params2 *ConsensusParams) bool {
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return params.Block == params2.Block &&
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params.Evidence == params2.Evidence &&
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params.Version == params2.Version &&
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params.Synchrony == params2.Synchrony &&
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tmstrings.StringSliceEqual(params.Validator.PubKeyTypes, params2.Validator.PubKeyTypes)
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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 (params ConsensusParams) UpdateConsensusParams(params2 *tmproto.ConsensusParams) 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.MaxBytes = params2.Evidence.MaxBytes
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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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if params2.Version != nil {
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res.Version.AppVersion = params2.Version.AppVersion
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}
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if params2.Synchrony != nil {
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res.Synchrony.Precision = params2.Synchrony.Precision
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res.Synchrony.MessageDelay = params2.Synchrony.MessageDelay
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}
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return res
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}
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func (params *ConsensusParams) ToProto() tmproto.ConsensusParams {
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return tmproto.ConsensusParams{
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Block: &tmproto.BlockParams{
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MaxBytes: params.Block.MaxBytes,
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MaxGas: params.Block.MaxGas,
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},
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Evidence: &tmproto.EvidenceParams{
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MaxAgeNumBlocks: params.Evidence.MaxAgeNumBlocks,
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MaxAgeDuration: params.Evidence.MaxAgeDuration,
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MaxBytes: params.Evidence.MaxBytes,
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},
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Validator: &tmproto.ValidatorParams{
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PubKeyTypes: params.Validator.PubKeyTypes,
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},
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Version: &tmproto.VersionParams{
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AppVersion: params.Version.AppVersion,
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},
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Synchrony: &tmproto.SynchronyParams{
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MessageDelay: params.Synchrony.MessageDelay,
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Precision: params.Synchrony.Precision,
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},
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}
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}
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func ConsensusParamsFromProto(pbParams tmproto.ConsensusParams) ConsensusParams {
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return ConsensusParams{
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Block: BlockParams{
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MaxBytes: pbParams.Block.MaxBytes,
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MaxGas: pbParams.Block.MaxGas,
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},
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Evidence: EvidenceParams{
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MaxAgeNumBlocks: pbParams.Evidence.MaxAgeNumBlocks,
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MaxAgeDuration: pbParams.Evidence.MaxAgeDuration,
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MaxBytes: pbParams.Evidence.MaxBytes,
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},
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Validator: ValidatorParams{
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PubKeyTypes: pbParams.Validator.PubKeyTypes,
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},
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Version: VersionParams{
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AppVersion: pbParams.Version.AppVersion,
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},
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Synchrony: SynchronyParams{
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MessageDelay: pbParams.Synchrony.MessageDelay,
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Precision: pbParams.Synchrony.Precision,
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},
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}
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}
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