From d235e2c6a5788ec4a6cff15a16f56b38a3876a0d Mon Sep 17 00:00:00 2001 From: Determinant Date: Sun, 28 Jun 2020 14:47:41 -0400 Subject: ... --- core/rawdb/schema.go | 166 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 166 insertions(+) create mode 100644 core/rawdb/schema.go (limited to 'core/rawdb/schema.go') diff --git a/core/rawdb/schema.go b/core/rawdb/schema.go new file mode 100644 index 0000000..51d1f66 --- /dev/null +++ b/core/rawdb/schema.go @@ -0,0 +1,166 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package rawdb contains a collection of low level database accessors. +package rawdb + +import ( + "encoding/binary" + + "github.com/ava-labs/go-ethereum/common" + "github.com/ava-labs/go-ethereum/metrics" +) + +// The fields below define the low level database schema prefixing. +var ( + // databaseVerisionKey tracks the current database version. + databaseVerisionKey = []byte("DatabaseVersion") + + // headHeaderKey tracks the latest known header's hash. + headHeaderKey = []byte("LastHeader") + + // headBlockKey tracks the latest known full block's hash. + headBlockKey = []byte("LastBlock") + + // headFastBlockKey tracks the latest known incomplete block's hash during fast sync. + headFastBlockKey = []byte("LastFast") + + // fastTrieProgressKey tracks the number of trie entries imported during fast sync. + fastTrieProgressKey = []byte("TrieSync") + + // Data item prefixes (use single byte to avoid mixing data types, avoid `i`, used for indexes). + headerPrefix = []byte("h") // headerPrefix + num (uint64 big endian) + hash -> header + headerTDSuffix = []byte("t") // headerPrefix + num (uint64 big endian) + hash + headerTDSuffix -> td + headerHashSuffix = []byte("n") // headerPrefix + num (uint64 big endian) + headerHashSuffix -> hash + headerNumberPrefix = []byte("H") // headerNumberPrefix + hash -> num (uint64 big endian) + + blockBodyPrefix = []byte("b") // blockBodyPrefix + num (uint64 big endian) + hash -> block body + blockReceiptsPrefix = []byte("r") // blockReceiptsPrefix + num (uint64 big endian) + hash -> block receipts + + txLookupPrefix = []byte("l") // txLookupPrefix + hash -> transaction/receipt lookup metadata + bloomBitsPrefix = []byte("B") // bloomBitsPrefix + bit (uint16 big endian) + section (uint64 big endian) + hash -> bloom bits + + preimagePrefix = []byte("secure-key-") // preimagePrefix + hash -> preimage + configPrefix = []byte("ethereum-config-") // config prefix for the db + + // Chain index prefixes (use `i` + single byte to avoid mixing data types). + BloomBitsIndexPrefix = []byte("iB") // BloomBitsIndexPrefix is the data table of a chain indexer to track its progress + + preimageCounter = metrics.NewRegisteredCounter("db/preimage/total", nil) + preimageHitCounter = metrics.NewRegisteredCounter("db/preimage/hits", nil) +) + +const ( + // freezerHeaderTable indicates the name of the freezer header table. + freezerHeaderTable = "headers" + + // freezerHashTable indicates the name of the freezer canonical hash table. + freezerHashTable = "hashes" + + // freezerBodiesTable indicates the name of the freezer block body table. + freezerBodiesTable = "bodies" + + // freezerReceiptTable indicates the name of the freezer receipts table. + freezerReceiptTable = "receipts" + + // freezerDifficultyTable indicates the name of the freezer total difficulty table. + freezerDifficultyTable = "diffs" +) + +// freezerNoSnappy configures whether compression is disabled for the ancient-tables. +// Hashes and difficulties don't compress well. +var freezerNoSnappy = map[string]bool{ + freezerHeaderTable: false, + freezerHashTable: true, + freezerBodiesTable: false, + freezerReceiptTable: false, + freezerDifficultyTable: true, +} + +// LegacyTxLookupEntry is the legacy TxLookupEntry definition with some unnecessary +// fields. +type LegacyTxLookupEntry struct { + BlockHash common.Hash + BlockIndex uint64 + Index uint64 +} + +// encodeBlockNumber encodes a block number as big endian uint64 +func encodeBlockNumber(number uint64) []byte { + enc := make([]byte, 8) + binary.BigEndian.PutUint64(enc, number) + return enc +} + +// headerKeyPrefix = headerPrefix + num (uint64 big endian) +func headerKeyPrefix(number uint64) []byte { + return append(headerPrefix, encodeBlockNumber(number)...) +} + +// headerKey = headerPrefix + num (uint64 big endian) + hash +func headerKey(number uint64, hash common.Hash) []byte { + return append(append(headerPrefix, encodeBlockNumber(number)...), hash.Bytes()...) +} + +// headerTDKey = headerPrefix + num (uint64 big endian) + hash + headerTDSuffix +func headerTDKey(number uint64, hash common.Hash) []byte { + return append(headerKey(number, hash), headerTDSuffix...) +} + +// headerHashKey = headerPrefix + num (uint64 big endian) + headerHashSuffix +func headerHashKey(number uint64) []byte { + return append(append(headerPrefix, encodeBlockNumber(number)...), headerHashSuffix...) +} + +// headerNumberKey = headerNumberPrefix + hash +func headerNumberKey(hash common.Hash) []byte { + return append(headerNumberPrefix, hash.Bytes()...) +} + +// blockBodyKey = blockBodyPrefix + num (uint64 big endian) + hash +func blockBodyKey(number uint64, hash common.Hash) []byte { + return append(append(blockBodyPrefix, encodeBlockNumber(number)...), hash.Bytes()...) +} + +// blockReceiptsKey = blockReceiptsPrefix + num (uint64 big endian) + hash +func blockReceiptsKey(number uint64, hash common.Hash) []byte { + return append(append(blockReceiptsPrefix, encodeBlockNumber(number)...), hash.Bytes()...) +} + +// txLookupKey = txLookupPrefix + hash +func txLookupKey(hash common.Hash) []byte { + return append(txLookupPrefix, hash.Bytes()...) +} + +// bloomBitsKey = bloomBitsPrefix + bit (uint16 big endian) + section (uint64 big endian) + hash +func bloomBitsKey(bit uint, section uint64, hash common.Hash) []byte { + key := append(append(bloomBitsPrefix, make([]byte, 10)...), hash.Bytes()...) + + binary.BigEndian.PutUint16(key[1:], uint16(bit)) + binary.BigEndian.PutUint64(key[3:], section) + + return key +} + +// preimageKey = preimagePrefix + hash +func preimageKey(hash common.Hash) []byte { + return append(preimagePrefix, hash.Bytes()...) +} + +// configKey = configPrefix + hash +func configKey(hash common.Hash) []byte { + return append(configPrefix, hash.Bytes()...) +} -- cgit v1.2.3-70-g09d2