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eth: move eth.Config to a common package (#22205)

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This moves the eth config definition into a separate package, eth/ethconfig. 
Packages eth and les can now import this common package instead of
importing eth from les, reducing dependencies.

Co-authored-by: Felix Lange <fjl@twurst.com>
This commit is contained in:
gary rong
2021-02-05 20:51:15 +08:00
committed by GitHub
parent 28121324ac
commit 098a2b6e26
22 changed files with 265 additions and 215 deletions
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69
eth/bloombits.go
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@ -17,16 +17,10 @@
package eth
import (
"context"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/bitutil"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/bloombits"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/ethdb"
)
const (
@ -78,66 +72,3 @@ func (eth *Ethereum) startBloomHandlers(sectionSize uint64) {
}()
}
}
const (
// bloomThrottling is the time to wait between processing two consecutive index
// sections. It's useful during chain upgrades to prevent disk overload.
bloomThrottling = 100 * time.Millisecond
)
// BloomIndexer implements a core.ChainIndexer, building up a rotated bloom bits index
// for the Ethereum header bloom filters, permitting blazing fast filtering.
type BloomIndexer struct {
size uint64 // section size to generate bloombits for
db ethdb.Database // database instance to write index data and metadata into
gen *bloombits.Generator // generator to rotate the bloom bits crating the bloom index
section uint64 // Section is the section number being processed currently
head common.Hash // Head is the hash of the last header processed
}
// NewBloomIndexer returns a chain indexer that generates bloom bits data for the
// canonical chain for fast logs filtering.
func NewBloomIndexer(db ethdb.Database, size, confirms uint64) *core.ChainIndexer {
backend := &BloomIndexer{
db: db,
size: size,
}
table := rawdb.NewTable(db, string(rawdb.BloomBitsIndexPrefix))
return core.NewChainIndexer(db, table, backend, size, confirms, bloomThrottling, "bloombits")
}
// Reset implements core.ChainIndexerBackend, starting a new bloombits index
// section.
func (b *BloomIndexer) Reset(ctx context.Context, section uint64, lastSectionHead common.Hash) error {
gen, err := bloombits.NewGenerator(uint(b.size))
b.gen, b.section, b.head = gen, section, common.Hash{}
return err
}
// Process implements core.ChainIndexerBackend, adding a new header's bloom into
// the index.
func (b *BloomIndexer) Process(ctx context.Context, header *types.Header) error {
b.gen.AddBloom(uint(header.Number.Uint64()-b.section*b.size), header.Bloom)
b.head = header.Hash()
return nil
}
// Commit implements core.ChainIndexerBackend, finalizing the bloom section and
// writing it out into the database.
func (b *BloomIndexer) Commit() error {
batch := b.db.NewBatch()
for i := 0; i < types.BloomBitLength; i++ {
bits, err := b.gen.Bitset(uint(i))
if err != nil {
return err
}
rawdb.WriteBloomBits(batch, uint(i), b.section, b.head, bitutil.CompressBytes(bits))
}
return batch.Write()
}
// Prune returns an empty error since we don't support pruning here.
func (b *BloomIndexer) Prune(threshold uint64) error {
return nil
}