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state.go
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state.go
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// Copyright (C) 2019-2021, Ava Labs, Inc. All rights reserved.
// See the file LICENSE for licensing terms.
package state
import (
"github.com/prometheus/client_golang/prometheus"
"github.com/ava-labs/avalanchego/database/prefixdb"
"github.com/ava-labs/avalanchego/database/versiondb"
)
var (
chainStatePrefix = []byte("chain")
blockStatePrefix = []byte("block")
heightIndexPrefix = []byte("height")
)
type State interface {
ChainState
BlockState
HeightIndex
}
type state struct {
ChainState
BlockState
HeightIndex
}
func New(db *versiondb.Database) State {
chainDB := prefixdb.New(chainStatePrefix, db)
blockDB := prefixdb.New(blockStatePrefix, db)
heightDB := prefixdb.New(heightIndexPrefix, db)
return &state{
ChainState: NewChainState(chainDB),
BlockState: NewBlockState(blockDB),
HeightIndex: NewHeightIndex(heightDB, db),
}
}
func NewMetered(db *versiondb.Database, namespace string, metrics prometheus.Registerer) (State, error) {
chainDB := prefixdb.New(chainStatePrefix, db)
blockDB := prefixdb.New(blockStatePrefix, db)
heightDB := prefixdb.New(heightIndexPrefix, db)
blockState, err := NewMeteredBlockState(blockDB, namespace, metrics)
if err != nil {
return nil, err
}
return &state{
ChainState: NewChainState(chainDB),
BlockState: blockState,
HeightIndex: NewHeightIndex(heightDB, db),
}, nil
}