mirror of
https://github.com/ethereum/go-ethereum.git
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1728 lines
60 KiB
Go
1728 lines
60 KiB
Go
// Copyright 2020 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package snap
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import (
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"bytes"
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"errors"
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"fmt"
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"math/big"
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"math/rand"
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"sort"
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"sync"
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"sync/atomic"
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"time"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/math"
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"github.com/ethereum/go-ethereum/core/rawdb"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/ethdb"
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"github.com/ethereum/go-ethereum/event"
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"github.com/ethereum/go-ethereum/log"
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"github.com/ethereum/go-ethereum/p2p/msgrate"
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"github.com/ethereum/go-ethereum/rlp"
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"github.com/ethereum/go-ethereum/trie"
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"github.com/ethereum/go-ethereum/trie/trienode"
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)
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const (
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// minRequestSize is the minimum number of bytes to request from a remote peer.
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// This number is used as the low cap for account and storage range requests.
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// Bytecode and trienode are limited inherently by item count (1).
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minRequestSize = 64 * 1024
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// maxRequestSize is the maximum number of bytes to request from a remote peer.
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// This number is used as the high cap for account and storage range requests.
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// Bytecode and trienode are limited more explicitly by the caps below.
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maxRequestSize = 512 * 1024
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// maxCodeRequestCount is the maximum number of bytecode blobs to request in a
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// single query. If this number is too low, we're not filling responses fully
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// and waste round trip times. If it's too high, we're capping responses and
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// waste bandwidth.
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//
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// Deployed bytecodes are currently capped at 24KB, so the minimum request
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// size should be maxRequestSize / 24K. Assuming that most contracts do not
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// come close to that, requesting 4x should be a good approximation.
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maxCodeRequestCount = maxRequestSize / (24 * 1024) * 4
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)
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var (
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// accountConcurrency is the number of chunks to split the account trie into
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// to allow concurrent retrievals.
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accountConcurrency = 16
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// storageConcurrency is the number of chunks to split a large contract
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// storage trie into to allow concurrent retrievals.
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storageConcurrency = 16
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)
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// ErrCancelled is returned from snap syncing if the operation was prematurely
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// terminated.
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var ErrCancelled = errors.New("sync cancelled")
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// accountRequest tracks a pending account range request to ensure responses are
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// to actual requests and to validate any security constraints.
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//
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// Concurrency note: account requests and responses are handled concurrently from
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// the main runloop to allow Merkle proof verifications on the peer's thread and
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// to drop on invalid response. The request struct must contain all the data to
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// construct the response without accessing runloop internals (i.e. task). That
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// is only included to allow the runloop to match a response to the task being
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// synced without having yet another set of maps.
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type accountRequest struct {
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peer string // Peer to which this request is assigned
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id uint64 // Request ID of this request
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time time.Time // Timestamp when the request was sent
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deliver chan *accountResponse // Channel to deliver successful response on
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revert chan *accountRequest // Channel to deliver request failure on
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cancel chan struct{} // Channel to track sync cancellation
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timeout *time.Timer // Timer to track delivery timeout
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stale chan struct{} // Channel to signal the request was dropped
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origin common.Hash // First account requested to allow continuation checks
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limit common.Hash // Last account requested to allow non-overlapping chunking
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task *accountTask // Task which this request is filling (only access fields through the runloop!!)
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}
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// accountResponse is an already Merkle-verified remote response to an account
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// range request. It contains the subtrie for the requested account range and
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// the database that's going to be filled with the internal nodes on commit.
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type accountResponse struct {
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task *accountTask // Task which this request is filling
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hashes []common.Hash // Account hashes in the returned range
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accounts []*types.StateAccount // Expanded accounts in the returned range
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cont bool // Whether the account range has a continuation
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}
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// bytecodeRequest tracks a pending bytecode request to ensure responses are to
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// actual requests and to validate any security constraints.
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//
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// Concurrency note: bytecode requests and responses are handled concurrently from
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// the main runloop to allow Keccak256 hash verifications on the peer's thread and
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// to drop on invalid response. The request struct must contain all the data to
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// construct the response without accessing runloop internals (i.e. task). That
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// is only included to allow the runloop to match a response to the task being
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// synced without having yet another set of maps.
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type bytecodeRequest struct {
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peer string // Peer to which this request is assigned
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id uint64 // Request ID of this request
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time time.Time // Timestamp when the request was sent
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deliver chan *bytecodeResponse // Channel to deliver successful response on
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revert chan *bytecodeRequest // Channel to deliver request failure on
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cancel chan struct{} // Channel to track sync cancellation
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timeout *time.Timer // Timer to track delivery timeout
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stale chan struct{} // Channel to signal the request was dropped
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hashes []common.Hash // Bytecode hashes to validate responses
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task *accountTask // Task which this request is filling (only access fields through the runloop!!)
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}
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// bytecodeResponse is an already verified remote response to a bytecode request.
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type bytecodeResponse struct {
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task *accountTask // Task which this request is filling
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hashes []common.Hash // Hashes of the bytecode to avoid double hashing
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codes [][]byte // Actual bytecodes to store into the database (nil = missing)
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}
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// storageRequest tracks a pending storage ranges request to ensure responses are
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// to actual requests and to validate any security constraints.
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//
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// Concurrency note: storage requests and responses are handled concurrently from
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// the main runloop to allow Merkle proof verifications on the peer's thread and
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// to drop on invalid response. The request struct must contain all the data to
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// construct the response without accessing runloop internals (i.e. tasks). That
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// is only included to allow the runloop to match a response to the task being
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// synced without having yet another set of maps.
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type storageRequest struct {
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peer string // Peer to which this request is assigned
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id uint64 // Request ID of this request
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time time.Time // Timestamp when the request was sent
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deliver chan *storageResponse // Channel to deliver successful response on
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revert chan *storageRequest // Channel to deliver request failure on
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cancel chan struct{} // Channel to track sync cancellation
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timeout *time.Timer // Timer to track delivery timeout
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stale chan struct{} // Channel to signal the request was dropped
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accounts []common.Hash // Account hashes to validate responses
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roots []common.Hash // Storage roots to validate responses
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origin common.Hash // First storage slot requested to allow continuation checks
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limit common.Hash // Last storage slot requested to allow non-overlapping chunking
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mainTask *accountTask // Task which this response belongs to (only access fields through the runloop!!)
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subTask *storageTask // Task which this response is filling (only access fields through the runloop!!)
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}
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// storageResponse is an already Merkle-verified remote response to a storage
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// range request. It contains the subtries for the requested storage ranges and
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// the databases that's going to be filled with the internal nodes on commit.
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type storageResponse struct {
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mainTask *accountTask // Task which this response belongs to
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subTask *storageTask // Task which this response is filling
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accounts []common.Hash // Account hashes requested, may be only partially filled
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roots []common.Hash // Storage roots requested, may be only partially filled
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hashes [][]common.Hash // Storage slot hashes in the returned range
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slots [][][]byte // Storage slot values in the returned range
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cont bool // Whether the last storage range has a continuation
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}
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// accountTask represents the sync task for a chunk of the account snapshot.
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type accountTask struct {
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// These fields get serialized to key-value store on shutdown
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Next common.Hash // Next account to sync in this interval
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Last common.Hash // Last account to sync in this interval
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SubTasks map[common.Hash][]*storageTask // Storage intervals needing fetching for large contracts
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// This is a list of account hashes whose storage are already completed
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// in this cycle. This field is newly introduced in v1.14 and will be
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// empty if the task is resolved from legacy progress data. Furthermore,
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// this additional field will be ignored by legacy Geth. The only side
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// effect is that these contracts might be resynced in the new cycle,
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// retaining the legacy behavior.
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StorageCompleted []common.Hash `json:",omitempty"`
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// These fields are internals used during runtime
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req *accountRequest // Pending request to fill this task
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res *accountResponse // Validate response filling this task
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pend int // Number of pending subtasks for this round
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needCode []bool // Flags whether the filling accounts need code retrieval
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needState []bool // Flags whether the filling accounts need storage retrieval
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needHeal []bool // Flags whether the filling accounts's state was chunked and need healing
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codeTasks map[common.Hash]struct{} // Code hashes that need retrieval
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stateTasks map[common.Hash]common.Hash // Account hashes->roots that need full state retrieval
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stateCompleted map[common.Hash]struct{} // Account hashes whose storage have been completed
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genBatch ethdb.Batch // Batch used by the node generator
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genTrie genTrie // Node generator from storage slots
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done bool // Flag whether the task can be removed
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}
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// activeSubTasks returns the set of storage tasks covered by the current account
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// range. Normally this would be the entire subTask set, but on a sync interrupt
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// and later resume it can happen that a shorter account range is retrieved. This
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// method ensures that we only start up the subtasks covered by the latest account
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// response.
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//
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// Nil is returned if the account range is empty.
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func (task *accountTask) activeSubTasks() map[common.Hash][]*storageTask {
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if len(task.res.hashes) == 0 {
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return nil
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}
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var (
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tasks = make(map[common.Hash][]*storageTask)
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last = task.res.hashes[len(task.res.hashes)-1]
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)
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for hash, subTasks := range task.SubTasks {
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if hash.Cmp(last) <= 0 {
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tasks[hash] = subTasks
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}
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}
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return tasks
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}
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// storageTask represents the sync task for a chunk of the storage snapshot.
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type storageTask struct {
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Next common.Hash // Next account to sync in this interval
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Last common.Hash // Last account to sync in this interval
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// These fields are internals used during runtime
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root common.Hash // Storage root hash for this instance
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req *storageRequest // Pending request to fill this task
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genBatch ethdb.Batch // Batch used by the node generator
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genTrie genTrie // Node generator from storage slots
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done bool // Flag whether the task can be removed
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}
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// SyncProgress is a database entry to allow suspending and resuming a snapshot state
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// sync. Opposed to full and fast sync, there is no way to restart a suspended
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// snap sync without prior knowledge of the suspension point.
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type SyncProgress struct {
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Tasks []*accountTask // The suspended account tasks (contract tasks within)
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// Status report during syncing phase
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AccountSynced uint64 // Number of accounts downloaded
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AccountBytes common.StorageSize // Number of account trie bytes persisted to disk
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BytecodeSynced uint64 // Number of bytecodes downloaded
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BytecodeBytes common.StorageSize // Number of bytecode bytes downloaded
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StorageSynced uint64 // Number of storage slots downloaded
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StorageBytes common.StorageSize // Number of storage trie bytes persisted to disk
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// Status report during healing phase
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TrienodeHealSynced uint64 // Number of state trie nodes downloaded
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TrienodeHealBytes common.StorageSize // Number of state trie bytes persisted to disk
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BytecodeHealSynced uint64 // Number of bytecodes downloaded
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BytecodeHealBytes common.StorageSize // Number of bytecodes persisted to disk
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}
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// SyncPeer abstracts out the methods required for a peer to be synced against
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// with the goal of allowing the construction of mock peers without the full
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// blown networking.
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type SyncPeer interface {
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// ID retrieves the peer's unique identifier.
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ID() string
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// RequestAccountRange fetches a batch of accounts rooted in a specific account
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// trie, starting with the origin.
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RequestAccountRange(id uint64, root, origin, limit common.Hash, bytes int) error
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// RequestStorageRanges fetches a batch of storage slots belonging to one or
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// more accounts. If slots from only one account is requested, an origin marker
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// may also be used to retrieve from there.
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RequestStorageRanges(id uint64, root common.Hash, accounts []common.Hash, origin, limit []byte, bytes int) error
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// RequestByteCodes fetches a batch of bytecodes by hash.
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RequestByteCodes(id uint64, hashes []common.Hash, bytes int) error
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// RequestTrieNodes fetches a batch of account or storage trie nodes rooted in
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// a specific state trie.
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RequestTrieNodes(id uint64, root common.Hash, count int, paths []TrieNodePathSet, bytes int) error
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// Log retrieves the peer's own contextual logger.
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Log() log.Logger
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}
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// Syncer is an Ethereum account and storage trie syncer based on snapshots and
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// the snap protocol. It's purpose is to download all the accounts and storage
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// slots from remote peers and reassemble chunks of the state trie, on top of
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// which a state sync can be run to fix any gaps / overlaps.
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//
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// Every network request has a variety of failure events:
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// - The peer disconnects after task assignment, failing to send the request
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// - The peer disconnects after sending the request, before delivering on it
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// - The peer remains connected, but does not deliver a response in time
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// - The peer delivers a stale response after a previous timeout
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// - The peer delivers a refusal to serve the requested state
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type Syncer struct {
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db ethdb.KeyValueStore // Database to store the trie nodes into (and dedup)
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scheme string // Node scheme used in node database
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root common.Hash // Current state trie root being synced
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tasks []*accountTask // Current account task set being synced
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snapped bool // True once account-range download is complete.
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healer *healTask // Current state healing task being executed
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update chan struct{} // Notification channel for possible sync progression
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peers map[string]SyncPeer // Currently active peers to download from
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peerJoin *event.Feed // Event feed to react to peers joining
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peerDrop *event.Feed // Event feed to react to peers dropping
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rates *msgrate.Trackers // Message throughput rates for peers
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// Request tracking during syncing phase
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statelessPeers map[string]struct{} // Peers that failed to deliver state data
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accountIdlers map[string]struct{} // Peers that aren't serving account requests
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bytecodeIdlers map[string]struct{} // Peers that aren't serving bytecode requests
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storageIdlers map[string]struct{} // Peers that aren't serving storage requests
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accountReqs map[uint64]*accountRequest // Account requests currently running
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bytecodeReqs map[uint64]*bytecodeRequest // Bytecode requests currently running
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storageReqs map[uint64]*storageRequest // Storage requests currently running
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accountSynced uint64 // Number of accounts downloaded
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accountBytes common.StorageSize // Number of account trie bytes persisted to disk
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bytecodeSynced uint64 // Number of bytecodes downloaded
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bytecodeBytes common.StorageSize // Number of bytecode bytes downloaded
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storageSynced uint64 // Number of storage slots downloaded
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storageBytes common.StorageSize // Number of storage trie bytes persisted to disk
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extProgress *SyncProgress // progress that can be exposed to external caller.
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// Request tracking during healing phase
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trienodeHealIdlers map[string]struct{} // Peers that aren't serving trie node requests
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bytecodeHealIdlers map[string]struct{} // Peers that aren't serving bytecode requests
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trienodeHealReqs map[uint64]*trienodeHealRequest // Trie node requests currently running
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bytecodeHealReqs map[uint64]*bytecodeHealRequest // Bytecode requests currently running
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trienodeHealRate float64 // Average heal rate for processing trie node data
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trienodeHealPend atomic.Uint64 // Number of trie nodes currently pending for processing
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trienodeHealThrottle float64 // Divisor for throttling the amount of trienode heal data requested
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trienodeHealThrottled time.Time // Timestamp the last time the throttle was updated
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trienodeHealSynced uint64 // Number of state trie nodes downloaded
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trienodeHealBytes common.StorageSize // Number of state trie bytes persisted to disk
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trienodeHealDups uint64 // Number of state trie nodes already processed
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trienodeHealNops uint64 // Number of state trie nodes not requested
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bytecodeHealSynced uint64 // Number of bytecodes downloaded
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bytecodeHealBytes common.StorageSize // Number of bytecodes persisted to disk
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bytecodeHealDups uint64 // Number of bytecodes already processed
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bytecodeHealNops uint64 // Number of bytecodes not requested
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stateWriter ethdb.Batch // Shared batch writer used for persisting raw states
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accountHealed uint64 // Number of accounts downloaded during the healing stage
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accountHealedBytes common.StorageSize // Number of raw account bytes persisted to disk during the healing stage
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storageHealed uint64 // Number of storage slots downloaded during the healing stage
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storageHealedBytes common.StorageSize // Number of raw storage bytes persisted to disk during the healing stage
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startTime time.Time // Time instance when snapshot sync started
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healStartTime time.Time // Time instance when the state healing started
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syncTimeOnce sync.Once // Ensure that the state sync time is uploaded only once
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logTime time.Time // Time instance when status was last reported
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// Version-specific hooks installed by registerV1/V2. Each one exists
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// because shared code in sync.go needs to dispatch into version-specific
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// code without knowing which version is running.
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syncFn func(root common.Hash, cancel chan struct{}) error
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revertVersionRequests func(peer string)
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onBytecodesAfterSync func(peer SyncPeer, id uint64, bytecodes [][]byte) error
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forwardAccountTask func(task *accountTask)
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registerVersionIdler func(id string)
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unregisterVersionIdler func(id string)
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pend sync.WaitGroup // Tracks network request goroutines for graceful shutdown
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lock sync.RWMutex // Protects fields that can change outside of sync (peers, reqs, root)
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}
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// NewSyncer creates a new snapshot syncer to download the Ethereum state over the
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// snap protocol.
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func NewSyncer(db ethdb.KeyValueStore, scheme string) *Syncer {
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s := &Syncer{
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db: db,
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scheme: scheme,
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peers: make(map[string]SyncPeer),
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peerJoin: new(event.Feed),
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peerDrop: new(event.Feed),
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rates: msgrate.NewTrackers(log.New("proto", "snap")),
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update: make(chan struct{}, 1),
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accountIdlers: make(map[string]struct{}),
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storageIdlers: make(map[string]struct{}),
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bytecodeIdlers: make(map[string]struct{}),
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accountReqs: make(map[uint64]*accountRequest),
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storageReqs: make(map[uint64]*storageRequest),
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bytecodeReqs: make(map[uint64]*bytecodeRequest),
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extProgress: new(SyncProgress),
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}
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s.registerV1()
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return s
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}
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// Register injects a new data source into the syncer's peerset.
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func (s *Syncer) Register(peer SyncPeer) error {
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// Make sure the peer is not registered yet
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id := peer.ID()
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s.lock.Lock()
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if _, ok := s.peers[id]; ok {
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log.Error("Snap peer already registered", "id", id)
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s.lock.Unlock()
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return errors.New("already registered")
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}
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s.peers[id] = peer
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s.rates.Track(id, msgrate.NewTracker(s.rates.MeanCapacities(), s.rates.MedianRoundTrip()))
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// Mark the peer as idle, even if no sync is running
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s.accountIdlers[id] = struct{}{}
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s.storageIdlers[id] = struct{}{}
|
|
s.bytecodeIdlers[id] = struct{}{}
|
|
s.registerVersionIdler(id)
|
|
s.lock.Unlock()
|
|
|
|
// Notify any active syncs that a new peer can be assigned data
|
|
s.peerJoin.Send(id)
|
|
return nil
|
|
}
|
|
|
|
// Unregister injects a new data source into the syncer's peerset.
|
|
func (s *Syncer) Unregister(id string) error {
|
|
// Remove all traces of the peer from the registry
|
|
s.lock.Lock()
|
|
if _, ok := s.peers[id]; !ok {
|
|
log.Error("Snap peer not registered", "id", id)
|
|
|
|
s.lock.Unlock()
|
|
return errors.New("not registered")
|
|
}
|
|
delete(s.peers, id)
|
|
s.rates.Untrack(id)
|
|
|
|
// Remove status markers, even if no sync is running
|
|
delete(s.statelessPeers, id)
|
|
|
|
delete(s.accountIdlers, id)
|
|
delete(s.storageIdlers, id)
|
|
delete(s.bytecodeIdlers, id)
|
|
s.unregisterVersionIdler(id)
|
|
s.lock.Unlock()
|
|
|
|
// Notify any active syncs that pending requests need to be reverted
|
|
s.peerDrop.Send(id)
|
|
return nil
|
|
}
|
|
|
|
// Sync starts (or resumes a previous) sync cycle to iterate over a state trie
|
|
// with the given root and reconstruct the nodes based on the snapshot leaves.
|
|
// Previously downloaded segments will not be redownloaded of fixed, rather any
|
|
// errors will be healed after the leaves are fully accumulated.
|
|
func (s *Syncer) Sync(root common.Hash, cancel chan struct{}) error {
|
|
return s.syncFn(root, cancel)
|
|
}
|
|
|
|
// Progress returns the snap sync status statistics.
|
|
func (s *Syncer) Progress() (*SyncProgress, *SyncPending) {
|
|
s.lock.Lock()
|
|
defer s.lock.Unlock()
|
|
pending := new(SyncPending)
|
|
if s.healer != nil {
|
|
pending.TrienodeHeal = uint64(len(s.healer.trieTasks))
|
|
pending.BytecodeHeal = uint64(len(s.healer.codeTasks))
|
|
}
|
|
return s.extProgress, pending
|
|
}
|
|
|
|
// cleanAccountTasks removes account range retrieval tasks that have already been
|
|
// completed.
|
|
func (s *Syncer) cleanAccountTasks() {
|
|
// If the sync was already done before, don't even bother
|
|
if len(s.tasks) == 0 {
|
|
return
|
|
}
|
|
// Sync wasn't finished previously, check for any task that can be finalized
|
|
for i := 0; i < len(s.tasks); i++ {
|
|
if s.tasks[i].done {
|
|
s.tasks = append(s.tasks[:i], s.tasks[i+1:]...)
|
|
i--
|
|
}
|
|
}
|
|
// If everything was just finalized just, generate the account trie and start heal
|
|
if len(s.tasks) == 0 {
|
|
s.lock.Lock()
|
|
s.snapped = true
|
|
s.lock.Unlock()
|
|
|
|
// Push the final sync report
|
|
s.reportSyncProgress(true)
|
|
}
|
|
}
|
|
|
|
// cleanStorageTasks iterates over all the account tasks and storage sub-tasks
|
|
// within, cleaning any that have been completed.
|
|
func (s *Syncer) cleanStorageTasks() {
|
|
for _, task := range s.tasks {
|
|
for account, subtasks := range task.SubTasks {
|
|
// Remove storage range retrieval tasks that completed
|
|
for j := 0; j < len(subtasks); j++ {
|
|
if subtasks[j].done {
|
|
subtasks = append(subtasks[:j], subtasks[j+1:]...)
|
|
j--
|
|
}
|
|
}
|
|
if len(subtasks) > 0 {
|
|
task.SubTasks[account] = subtasks
|
|
continue
|
|
}
|
|
// If all storage chunks are done, mark the account as done too
|
|
for j, hash := range task.res.hashes {
|
|
if hash == account {
|
|
task.needState[j] = false
|
|
}
|
|
}
|
|
delete(task.SubTasks, account)
|
|
task.pend--
|
|
|
|
// Mark the state as complete to prevent resyncing, regardless
|
|
// if state healing is necessary.
|
|
task.stateCompleted[account] = struct{}{}
|
|
|
|
// If this was the last pending task, forward the account task
|
|
if task.pend == 0 {
|
|
s.forwardAccountTask(task)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// assignAccountTasks attempts to match idle peers to pending account range
|
|
// retrievals.
|
|
func (s *Syncer) assignAccountTasks(success chan *accountResponse, fail chan *accountRequest, cancel chan struct{}) {
|
|
s.lock.Lock()
|
|
defer s.lock.Unlock()
|
|
|
|
// Sort the peers by download capacity to use faster ones if many available
|
|
idlers := &capacitySort{
|
|
ids: make([]string, 0, len(s.accountIdlers)),
|
|
caps: make([]int, 0, len(s.accountIdlers)),
|
|
}
|
|
targetTTL := s.rates.TargetTimeout()
|
|
for id := range s.accountIdlers {
|
|
if _, ok := s.statelessPeers[id]; ok {
|
|
continue
|
|
}
|
|
idlers.ids = append(idlers.ids, id)
|
|
idlers.caps = append(idlers.caps, s.rates.Capacity(id, AccountRangeMsg, targetTTL))
|
|
}
|
|
if len(idlers.ids) == 0 {
|
|
return
|
|
}
|
|
sort.Sort(sort.Reverse(idlers))
|
|
|
|
// Iterate over all the tasks and try to find a pending one
|
|
for _, task := range s.tasks {
|
|
// Skip any tasks already filling
|
|
if task.req != nil || task.res != nil {
|
|
continue
|
|
}
|
|
// Task pending retrieval, try to find an idle peer. If no such peer
|
|
// exists, we probably assigned tasks for all (or they are stateless).
|
|
// Abort the entire assignment mechanism.
|
|
if len(idlers.ids) == 0 {
|
|
return
|
|
}
|
|
var (
|
|
idle = idlers.ids[0]
|
|
peer = s.peers[idle]
|
|
cap = idlers.caps[0]
|
|
)
|
|
idlers.ids, idlers.caps = idlers.ids[1:], idlers.caps[1:]
|
|
|
|
// Matched a pending task to an idle peer, allocate a unique request id
|
|
var reqid uint64
|
|
for {
|
|
reqid = uint64(rand.Int63())
|
|
if reqid == 0 {
|
|
continue
|
|
}
|
|
if _, ok := s.accountReqs[reqid]; ok {
|
|
continue
|
|
}
|
|
break
|
|
}
|
|
// Generate the network query and send it to the peer
|
|
req := &accountRequest{
|
|
peer: idle,
|
|
id: reqid,
|
|
time: time.Now(),
|
|
deliver: success,
|
|
revert: fail,
|
|
cancel: cancel,
|
|
stale: make(chan struct{}),
|
|
origin: task.Next,
|
|
limit: task.Last,
|
|
task: task,
|
|
}
|
|
req.timeout = time.AfterFunc(s.rates.TargetTimeout(), func() {
|
|
peer.Log().Debug("Account range request timed out", "reqid", reqid)
|
|
s.rates.Update(idle, AccountRangeMsg, 0, 0)
|
|
s.scheduleRevertAccountRequest(req)
|
|
})
|
|
s.accountReqs[reqid] = req
|
|
delete(s.accountIdlers, idle)
|
|
|
|
s.pend.Add(1)
|
|
go func(root common.Hash) {
|
|
defer s.pend.Done()
|
|
|
|
// Attempt to send the remote request and revert if it fails
|
|
if cap > maxRequestSize {
|
|
cap = maxRequestSize
|
|
}
|
|
if cap < minRequestSize { // Don't bother with peers below a bare minimum performance
|
|
cap = minRequestSize
|
|
}
|
|
if err := peer.RequestAccountRange(reqid, root, req.origin, req.limit, cap); err != nil {
|
|
peer.Log().Debug("Failed to request account range", "err", err)
|
|
s.scheduleRevertAccountRequest(req)
|
|
}
|
|
}(s.root)
|
|
|
|
// Inject the request into the task to block further assignments
|
|
task.req = req
|
|
}
|
|
}
|
|
|
|
// assignBytecodeTasks attempts to match idle peers to pending code retrievals.
|
|
func (s *Syncer) assignBytecodeTasks(success chan *bytecodeResponse, fail chan *bytecodeRequest, cancel chan struct{}) {
|
|
s.lock.Lock()
|
|
defer s.lock.Unlock()
|
|
|
|
// Sort the peers by download capacity to use faster ones if many available
|
|
idlers := &capacitySort{
|
|
ids: make([]string, 0, len(s.bytecodeIdlers)),
|
|
caps: make([]int, 0, len(s.bytecodeIdlers)),
|
|
}
|
|
targetTTL := s.rates.TargetTimeout()
|
|
for id := range s.bytecodeIdlers {
|
|
if _, ok := s.statelessPeers[id]; ok {
|
|
continue
|
|
}
|
|
idlers.ids = append(idlers.ids, id)
|
|
idlers.caps = append(idlers.caps, s.rates.Capacity(id, ByteCodesMsg, targetTTL))
|
|
}
|
|
if len(idlers.ids) == 0 {
|
|
return
|
|
}
|
|
sort.Sort(sort.Reverse(idlers))
|
|
|
|
// Iterate over all the tasks and try to find a pending one
|
|
for _, task := range s.tasks {
|
|
// Skip any tasks not in the bytecode retrieval phase
|
|
if task.res == nil {
|
|
continue
|
|
}
|
|
// Skip tasks that are already retrieving (or done with) all codes
|
|
if len(task.codeTasks) == 0 {
|
|
continue
|
|
}
|
|
// Task pending retrieval, try to find an idle peer. If no such peer
|
|
// exists, we probably assigned tasks for all (or they are stateless).
|
|
// Abort the entire assignment mechanism.
|
|
if len(idlers.ids) == 0 {
|
|
return
|
|
}
|
|
var (
|
|
idle = idlers.ids[0]
|
|
peer = s.peers[idle]
|
|
cap = idlers.caps[0]
|
|
)
|
|
idlers.ids, idlers.caps = idlers.ids[1:], idlers.caps[1:]
|
|
|
|
// Matched a pending task to an idle peer, allocate a unique request id
|
|
var reqid uint64
|
|
for {
|
|
reqid = uint64(rand.Int63())
|
|
if reqid == 0 {
|
|
continue
|
|
}
|
|
if _, ok := s.bytecodeReqs[reqid]; ok {
|
|
continue
|
|
}
|
|
break
|
|
}
|
|
// Generate the network query and send it to the peer
|
|
if cap > maxCodeRequestCount {
|
|
cap = maxCodeRequestCount
|
|
}
|
|
hashes := make([]common.Hash, 0, cap)
|
|
for hash := range task.codeTasks {
|
|
delete(task.codeTasks, hash)
|
|
hashes = append(hashes, hash)
|
|
if len(hashes) >= cap {
|
|
break
|
|
}
|
|
}
|
|
req := &bytecodeRequest{
|
|
peer: idle,
|
|
id: reqid,
|
|
time: time.Now(),
|
|
deliver: success,
|
|
revert: fail,
|
|
cancel: cancel,
|
|
stale: make(chan struct{}),
|
|
hashes: hashes,
|
|
task: task,
|
|
}
|
|
req.timeout = time.AfterFunc(s.rates.TargetTimeout(), func() {
|
|
peer.Log().Debug("Bytecode request timed out", "reqid", reqid)
|
|
s.rates.Update(idle, ByteCodesMsg, 0, 0)
|
|
s.scheduleRevertBytecodeRequest(req)
|
|
})
|
|
s.bytecodeReqs[reqid] = req
|
|
delete(s.bytecodeIdlers, idle)
|
|
|
|
s.pend.Add(1)
|
|
go func() {
|
|
defer s.pend.Done()
|
|
|
|
// Attempt to send the remote request and revert if it fails
|
|
if err := peer.RequestByteCodes(reqid, hashes, maxRequestSize); err != nil {
|
|
log.Debug("Failed to request bytecodes", "err", err)
|
|
s.scheduleRevertBytecodeRequest(req)
|
|
}
|
|
}()
|
|
}
|
|
}
|
|
|
|
// assignStorageTasks attempts to match idle peers to pending storage range
|
|
// retrievals.
|
|
func (s *Syncer) assignStorageTasks(success chan *storageResponse, fail chan *storageRequest, cancel chan struct{}) {
|
|
s.lock.Lock()
|
|
defer s.lock.Unlock()
|
|
|
|
// Sort the peers by download capacity to use faster ones if many available
|
|
idlers := &capacitySort{
|
|
ids: make([]string, 0, len(s.storageIdlers)),
|
|
caps: make([]int, 0, len(s.storageIdlers)),
|
|
}
|
|
targetTTL := s.rates.TargetTimeout()
|
|
for id := range s.storageIdlers {
|
|
if _, ok := s.statelessPeers[id]; ok {
|
|
continue
|
|
}
|
|
idlers.ids = append(idlers.ids, id)
|
|
idlers.caps = append(idlers.caps, s.rates.Capacity(id, StorageRangesMsg, targetTTL))
|
|
}
|
|
if len(idlers.ids) == 0 {
|
|
return
|
|
}
|
|
sort.Sort(sort.Reverse(idlers))
|
|
|
|
// Iterate over all the tasks and try to find a pending one
|
|
for _, task := range s.tasks {
|
|
// Skip any tasks not in the storage retrieval phase
|
|
if task.res == nil {
|
|
continue
|
|
}
|
|
// Skip tasks that are already retrieving (or done with) all small states
|
|
storageTasks := task.activeSubTasks()
|
|
if len(storageTasks) == 0 && len(task.stateTasks) == 0 {
|
|
continue
|
|
}
|
|
// Task pending retrieval, try to find an idle peer. If no such peer
|
|
// exists, we probably assigned tasks for all (or they are stateless).
|
|
// Abort the entire assignment mechanism.
|
|
if len(idlers.ids) == 0 {
|
|
return
|
|
}
|
|
var (
|
|
idle = idlers.ids[0]
|
|
peer = s.peers[idle]
|
|
cap = idlers.caps[0]
|
|
)
|
|
idlers.ids, idlers.caps = idlers.ids[1:], idlers.caps[1:]
|
|
|
|
// Matched a pending task to an idle peer, allocate a unique request id
|
|
var reqid uint64
|
|
for {
|
|
reqid = uint64(rand.Int63())
|
|
if reqid == 0 {
|
|
continue
|
|
}
|
|
if _, ok := s.storageReqs[reqid]; ok {
|
|
continue
|
|
}
|
|
break
|
|
}
|
|
// Generate the network query and send it to the peer. If there are
|
|
// large contract tasks pending, complete those before diving into
|
|
// even more new contracts.
|
|
if cap > maxRequestSize {
|
|
cap = maxRequestSize
|
|
}
|
|
if cap < minRequestSize { // Don't bother with peers below a bare minimum performance
|
|
cap = minRequestSize
|
|
}
|
|
storageSets := cap / 1024
|
|
|
|
var (
|
|
accounts = make([]common.Hash, 0, storageSets)
|
|
roots = make([]common.Hash, 0, storageSets)
|
|
subtask *storageTask
|
|
)
|
|
for account, subtasks := range storageTasks {
|
|
for _, st := range subtasks {
|
|
// Skip any subtasks already filling
|
|
if st.req != nil {
|
|
continue
|
|
}
|
|
// Found an incomplete storage chunk, schedule it
|
|
accounts = append(accounts, account)
|
|
roots = append(roots, st.root)
|
|
subtask = st
|
|
break // Large contract chunks are downloaded individually
|
|
}
|
|
if subtask != nil {
|
|
break // Large contract chunks are downloaded individually
|
|
}
|
|
}
|
|
if subtask == nil {
|
|
// No large contract required retrieval, but small ones available
|
|
for account, root := range task.stateTasks {
|
|
delete(task.stateTasks, account)
|
|
|
|
accounts = append(accounts, account)
|
|
roots = append(roots, root)
|
|
|
|
if len(accounts) >= storageSets {
|
|
break
|
|
}
|
|
}
|
|
}
|
|
// If nothing was found, it means this task is actually already fully
|
|
// retrieving, but large contracts are hard to detect. Skip to the next.
|
|
if len(accounts) == 0 {
|
|
continue
|
|
}
|
|
req := &storageRequest{
|
|
peer: idle,
|
|
id: reqid,
|
|
time: time.Now(),
|
|
deliver: success,
|
|
revert: fail,
|
|
cancel: cancel,
|
|
stale: make(chan struct{}),
|
|
accounts: accounts,
|
|
roots: roots,
|
|
mainTask: task,
|
|
subTask: subtask,
|
|
}
|
|
if subtask != nil {
|
|
req.origin = subtask.Next
|
|
req.limit = subtask.Last
|
|
}
|
|
req.timeout = time.AfterFunc(s.rates.TargetTimeout(), func() {
|
|
peer.Log().Debug("Storage request timed out", "reqid", reqid)
|
|
s.rates.Update(idle, StorageRangesMsg, 0, 0)
|
|
s.scheduleRevertStorageRequest(req)
|
|
})
|
|
s.storageReqs[reqid] = req
|
|
delete(s.storageIdlers, idle)
|
|
|
|
s.pend.Add(1)
|
|
go func(root common.Hash) {
|
|
defer s.pend.Done()
|
|
|
|
// Attempt to send the remote request and revert if it fails
|
|
var origin, limit []byte
|
|
if subtask != nil {
|
|
origin, limit = req.origin[:], req.limit[:]
|
|
}
|
|
if err := peer.RequestStorageRanges(reqid, root, accounts, origin, limit, cap); err != nil {
|
|
log.Debug("Failed to request storage", "err", err)
|
|
s.scheduleRevertStorageRequest(req)
|
|
}
|
|
}(s.root)
|
|
|
|
// Inject the request into the subtask to block further assignments
|
|
if subtask != nil {
|
|
subtask.req = req
|
|
}
|
|
}
|
|
}
|
|
|
|
// revertRequests locates all the currently pending requests from a particular
|
|
// peer and reverts them, rescheduling for others to fulfill.
|
|
func (s *Syncer) revertRequests(peer string) {
|
|
// Gather the shared requests first, revertals need the lock too
|
|
s.lock.Lock()
|
|
var accountReqs []*accountRequest
|
|
for _, req := range s.accountReqs {
|
|
if req.peer == peer {
|
|
accountReqs = append(accountReqs, req)
|
|
}
|
|
}
|
|
var bytecodeReqs []*bytecodeRequest
|
|
for _, req := range s.bytecodeReqs {
|
|
if req.peer == peer {
|
|
bytecodeReqs = append(bytecodeReqs, req)
|
|
}
|
|
}
|
|
var storageReqs []*storageRequest
|
|
for _, req := range s.storageReqs {
|
|
if req.peer == peer {
|
|
storageReqs = append(storageReqs, req)
|
|
}
|
|
}
|
|
s.lock.Unlock()
|
|
|
|
// Revert all the shared requests matching the peer
|
|
for _, req := range accountReqs {
|
|
s.revertAccountRequest(req)
|
|
}
|
|
for _, req := range bytecodeReqs {
|
|
s.revertBytecodeRequest(req)
|
|
}
|
|
for _, req := range storageReqs {
|
|
s.revertStorageRequest(req)
|
|
}
|
|
// Version-specific request maps (heal for v1, access lists for v2).
|
|
s.revertVersionRequests(peer)
|
|
}
|
|
|
|
// scheduleRevertAccountRequest asks the event loop to clean up an account range
|
|
// request and return all failed retrieval tasks to the scheduler for reassignment.
|
|
func (s *Syncer) scheduleRevertAccountRequest(req *accountRequest) {
|
|
select {
|
|
case req.revert <- req:
|
|
// Sync event loop notified
|
|
case <-req.cancel:
|
|
// Sync cycle got cancelled
|
|
case <-req.stale:
|
|
// Request already reverted
|
|
}
|
|
}
|
|
|
|
// revertAccountRequest cleans up an account range request and returns all failed
|
|
// retrieval tasks to the scheduler for reassignment.
|
|
//
|
|
// Note, this needs to run on the event runloop thread to reschedule to idle peers.
|
|
// On peer threads, use scheduleRevertAccountRequest.
|
|
func (s *Syncer) revertAccountRequest(req *accountRequest) {
|
|
log.Debug("Reverting account request", "peer", req.peer, "reqid", req.id)
|
|
select {
|
|
case <-req.stale:
|
|
log.Trace("Account request already reverted", "peer", req.peer, "reqid", req.id)
|
|
return
|
|
default:
|
|
}
|
|
close(req.stale)
|
|
|
|
// Remove the request from the tracked set and restore the peer to the
|
|
// idle pool so it can be reassigned work (skip if peer already left).
|
|
s.lock.Lock()
|
|
delete(s.accountReqs, req.id)
|
|
if _, ok := s.peers[req.peer]; ok {
|
|
s.accountIdlers[req.peer] = struct{}{}
|
|
}
|
|
s.lock.Unlock()
|
|
|
|
// If there's a timeout timer still running, abort it and mark the account
|
|
// task as not-pending, ready for rescheduling
|
|
req.timeout.Stop()
|
|
if req.task.req == req {
|
|
req.task.req = nil
|
|
}
|
|
}
|
|
|
|
// scheduleRevertBytecodeRequest asks the event loop to clean up a bytecode request
|
|
// and return all failed retrieval tasks to the scheduler for reassignment.
|
|
func (s *Syncer) scheduleRevertBytecodeRequest(req *bytecodeRequest) {
|
|
select {
|
|
case req.revert <- req:
|
|
// Sync event loop notified
|
|
case <-req.cancel:
|
|
// Sync cycle got cancelled
|
|
case <-req.stale:
|
|
// Request already reverted
|
|
}
|
|
}
|
|
|
|
// revertBytecodeRequest cleans up a bytecode request and returns all failed
|
|
// retrieval tasks to the scheduler for reassignment.
|
|
//
|
|
// Note, this needs to run on the event runloop thread to reschedule to idle peers.
|
|
// On peer threads, use scheduleRevertBytecodeRequest.
|
|
func (s *Syncer) revertBytecodeRequest(req *bytecodeRequest) {
|
|
log.Debug("Reverting bytecode request", "peer", req.peer)
|
|
select {
|
|
case <-req.stale:
|
|
log.Trace("Bytecode request already reverted", "peer", req.peer, "reqid", req.id)
|
|
return
|
|
default:
|
|
}
|
|
close(req.stale)
|
|
|
|
// Remove the request from the tracked set and restore the peer to the
|
|
// idle pool so it can be reassigned work (skip if peer already left).
|
|
s.lock.Lock()
|
|
delete(s.bytecodeReqs, req.id)
|
|
if _, ok := s.peers[req.peer]; ok {
|
|
s.bytecodeIdlers[req.peer] = struct{}{}
|
|
}
|
|
s.lock.Unlock()
|
|
|
|
// If there's a timeout timer still running, abort it and mark the code
|
|
// retrievals as not-pending, ready for rescheduling
|
|
req.timeout.Stop()
|
|
for _, hash := range req.hashes {
|
|
req.task.codeTasks[hash] = struct{}{}
|
|
}
|
|
}
|
|
|
|
// scheduleRevertStorageRequest asks the event loop to clean up a storage range
|
|
// request and return all failed retrieval tasks to the scheduler for reassignment.
|
|
func (s *Syncer) scheduleRevertStorageRequest(req *storageRequest) {
|
|
select {
|
|
case req.revert <- req:
|
|
// Sync event loop notified
|
|
case <-req.cancel:
|
|
// Sync cycle got cancelled
|
|
case <-req.stale:
|
|
// Request already reverted
|
|
}
|
|
}
|
|
|
|
// revertStorageRequest cleans up a storage range request and returns all failed
|
|
// retrieval tasks to the scheduler for reassignment.
|
|
//
|
|
// Note, this needs to run on the event runloop thread to reschedule to idle peers.
|
|
// On peer threads, use scheduleRevertStorageRequest.
|
|
func (s *Syncer) revertStorageRequest(req *storageRequest) {
|
|
log.Debug("Reverting storage request", "peer", req.peer)
|
|
select {
|
|
case <-req.stale:
|
|
log.Trace("Storage request already reverted", "peer", req.peer, "reqid", req.id)
|
|
return
|
|
default:
|
|
}
|
|
close(req.stale)
|
|
|
|
// Remove the request from the tracked set and restore the peer to the
|
|
// idle pool so it can be reassigned work (skip if peer already left).
|
|
s.lock.Lock()
|
|
delete(s.storageReqs, req.id)
|
|
if _, ok := s.peers[req.peer]; ok {
|
|
s.storageIdlers[req.peer] = struct{}{}
|
|
}
|
|
s.lock.Unlock()
|
|
|
|
// If there's a timeout timer still running, abort it and mark the storage
|
|
// task as not-pending, ready for rescheduling
|
|
req.timeout.Stop()
|
|
if req.subTask != nil {
|
|
req.subTask.req = nil
|
|
} else {
|
|
for i, account := range req.accounts {
|
|
req.mainTask.stateTasks[account] = req.roots[i]
|
|
}
|
|
}
|
|
}
|
|
|
|
// processAccountResponse integrates an already validated account range response
|
|
// into the account tasks.
|
|
func (s *Syncer) processAccountResponse(res *accountResponse) {
|
|
// Switch the task from pending to filling
|
|
res.task.req = nil
|
|
res.task.res = res
|
|
|
|
// Ensure that the response doesn't overflow into the subsequent task
|
|
lastBig := res.task.Last.Big()
|
|
for i, hash := range res.hashes {
|
|
// Mark the range complete if the last is already included.
|
|
// Keep iteration to delete the extra states if exists.
|
|
cmp := hash.Big().Cmp(lastBig)
|
|
if cmp == 0 {
|
|
res.cont = false
|
|
continue
|
|
}
|
|
if cmp > 0 {
|
|
// Chunk overflown, cut off excess
|
|
res.hashes = res.hashes[:i]
|
|
res.accounts = res.accounts[:i]
|
|
res.cont = false // Mark range completed
|
|
break
|
|
}
|
|
}
|
|
// Iterate over all the accounts and assemble which ones need further sub-
|
|
// filling before the entire account range can be persisted.
|
|
res.task.needCode = make([]bool, len(res.accounts))
|
|
res.task.needState = make([]bool, len(res.accounts))
|
|
res.task.needHeal = make([]bool, len(res.accounts))
|
|
|
|
res.task.codeTasks = make(map[common.Hash]struct{})
|
|
res.task.stateTasks = make(map[common.Hash]common.Hash)
|
|
|
|
resumed := make(map[common.Hash]struct{})
|
|
|
|
res.task.pend = 0
|
|
for i, account := range res.accounts {
|
|
// Check if the account is a contract with an unknown code
|
|
if !bytes.Equal(account.CodeHash, types.EmptyCodeHash.Bytes()) {
|
|
if !rawdb.HasCodeWithPrefix(s.db, common.BytesToHash(account.CodeHash)) {
|
|
res.task.codeTasks[common.BytesToHash(account.CodeHash)] = struct{}{}
|
|
res.task.needCode[i] = true
|
|
res.task.pend++
|
|
}
|
|
}
|
|
// Check if the account is a contract with an unknown storage trie
|
|
if account.Root != types.EmptyRootHash {
|
|
// If the storage was already retrieved in the last cycle, there's no need
|
|
// to resync it again, regardless of whether the storage root is consistent
|
|
// or not.
|
|
if _, exist := res.task.stateCompleted[res.hashes[i]]; exist {
|
|
// The leftover storage tasks are not expected, unless system is
|
|
// very wrong.
|
|
if _, ok := res.task.SubTasks[res.hashes[i]]; ok {
|
|
panic(fmt.Errorf("unexpected leftover storage tasks, owner: %x", res.hashes[i]))
|
|
}
|
|
// Mark the healing tag if storage root node is inconsistent, or
|
|
// it's non-existent due to storage chunking.
|
|
if !rawdb.HasTrieNode(s.db, res.hashes[i], nil, account.Root, s.scheme) {
|
|
res.task.needHeal[i] = true
|
|
}
|
|
} else {
|
|
// If there was a previous large state retrieval in progress,
|
|
// don't restart it from scratch. This happens if a sync cycle
|
|
// is interrupted and resumed later. However, *do* update the
|
|
// previous root hash.
|
|
if subtasks, ok := res.task.SubTasks[res.hashes[i]]; ok {
|
|
log.Debug("Resuming large storage retrieval", "account", res.hashes[i], "root", account.Root)
|
|
for _, subtask := range subtasks {
|
|
subtask.root = account.Root
|
|
}
|
|
res.task.needHeal[i] = true
|
|
resumed[res.hashes[i]] = struct{}{}
|
|
largeStorageResumedGauge.Inc(1)
|
|
} else {
|
|
// It's possible that in the hash scheme, the storage, along
|
|
// with the trie nodes of the given root, is already present
|
|
// in the database. Schedule the storage task anyway to simplify
|
|
// the logic here.
|
|
res.task.stateTasks[res.hashes[i]] = account.Root
|
|
}
|
|
res.task.needState[i] = true
|
|
res.task.pend++
|
|
}
|
|
}
|
|
}
|
|
// Delete any subtasks that have been aborted but not resumed. It's essential
|
|
// as the corresponding contract might be self-destructed in this cycle(it's
|
|
// no longer possible in ethereum as self-destruction is disabled in Cancun
|
|
// Fork, but the condition is still necessary for other networks).
|
|
//
|
|
// Keep the leftover storage tasks if they are not covered by the responded
|
|
// account range which should be picked up in next account wave.
|
|
if len(res.hashes) > 0 {
|
|
// The hash of last delivered account in the response
|
|
last := res.hashes[len(res.hashes)-1]
|
|
for hash := range res.task.SubTasks {
|
|
// TODO(rjl493456442) degrade the log level before merging.
|
|
if hash.Cmp(last) > 0 {
|
|
log.Info("Keeping suspended storage retrieval", "account", hash)
|
|
continue
|
|
}
|
|
// TODO(rjl493456442) degrade the log level before merging.
|
|
// It should never happen in ethereum.
|
|
if _, ok := resumed[hash]; !ok {
|
|
log.Error("Aborting suspended storage retrieval", "account", hash)
|
|
delete(res.task.SubTasks, hash)
|
|
largeStorageDiscardGauge.Inc(1)
|
|
}
|
|
}
|
|
}
|
|
// If the account range contained no contracts, or all have been fully filled
|
|
// beforehand, short circuit storage filling and forward to the next task
|
|
if res.task.pend == 0 {
|
|
s.forwardAccountTask(res.task)
|
|
return
|
|
}
|
|
// Some accounts are incomplete, leave as is for the storage and contract
|
|
// task assigners to pick up and fill
|
|
}
|
|
|
|
// processBytecodeResponse integrates an already validated bytecode response
|
|
// into the account tasks.
|
|
func (s *Syncer) processBytecodeResponse(res *bytecodeResponse) {
|
|
batch := s.db.NewBatch()
|
|
|
|
var codes uint64
|
|
for i, hash := range res.hashes {
|
|
code := res.codes[i]
|
|
|
|
// If the bytecode was not delivered, reschedule it
|
|
if code == nil {
|
|
res.task.codeTasks[hash] = struct{}{}
|
|
continue
|
|
}
|
|
// Code was delivered, mark it not needed any more
|
|
for j, account := range res.task.res.accounts {
|
|
if res.task.needCode[j] && hash == common.BytesToHash(account.CodeHash) {
|
|
res.task.needCode[j] = false
|
|
res.task.pend--
|
|
}
|
|
}
|
|
// Push the bytecode into a database batch
|
|
codes++
|
|
rawdb.WriteCode(batch, hash, code)
|
|
}
|
|
bytes := common.StorageSize(batch.ValueSize())
|
|
if err := batch.Write(); err != nil {
|
|
log.Crit("Failed to persist bytecodes", "err", err)
|
|
}
|
|
s.bytecodeSynced += codes
|
|
s.bytecodeBytes += bytes
|
|
|
|
log.Debug("Persisted set of bytecodes", "count", codes, "bytes", bytes)
|
|
|
|
// If this delivery completed the last pending task, forward the account task
|
|
// to the next chunk
|
|
if res.task.pend == 0 {
|
|
s.forwardAccountTask(res.task)
|
|
return
|
|
}
|
|
// Some accounts are still incomplete, leave as is for the storage and contract
|
|
// task assigners to pick up and fill.
|
|
}
|
|
|
|
// OnAccounts is a callback method to invoke when a range of accounts are
|
|
// received from a remote peer.
|
|
func (s *Syncer) OnAccounts(peer SyncPeer, id uint64, hashes []common.Hash, accounts [][]byte, proof [][]byte) error {
|
|
size := common.StorageSize(len(hashes) * common.HashLength)
|
|
for _, account := range accounts {
|
|
size += common.StorageSize(len(account))
|
|
}
|
|
for _, node := range proof {
|
|
size += common.StorageSize(len(node))
|
|
}
|
|
logger := peer.Log().New("reqid", id)
|
|
logger.Trace("Delivering range of accounts", "hashes", len(hashes), "accounts", len(accounts), "proofs", len(proof), "bytes", size)
|
|
|
|
// Whether or not the response is valid, we can mark the peer as idle and
|
|
// notify the scheduler to assign a new task. If the response is invalid,
|
|
// we'll drop the peer in a bit.
|
|
defer func() {
|
|
s.lock.Lock()
|
|
defer s.lock.Unlock()
|
|
if _, ok := s.peers[peer.ID()]; ok {
|
|
s.accountIdlers[peer.ID()] = struct{}{}
|
|
}
|
|
select {
|
|
case s.update <- struct{}{}:
|
|
default:
|
|
}
|
|
}()
|
|
s.lock.Lock()
|
|
// Ensure the response is for a valid request
|
|
req, ok := s.accountReqs[id]
|
|
if !ok {
|
|
// Request stale, perhaps the peer timed out but came through in the end
|
|
logger.Warn("Unexpected account range packet")
|
|
s.lock.Unlock()
|
|
return nil
|
|
}
|
|
delete(s.accountReqs, id)
|
|
s.rates.Update(peer.ID(), AccountRangeMsg, time.Since(req.time), int(size))
|
|
|
|
// Clean up the request timeout timer, we'll see how to proceed further based
|
|
// on the actual delivered content
|
|
if !req.timeout.Stop() {
|
|
// The timeout is already triggered, and this request will be reverted+rescheduled
|
|
s.lock.Unlock()
|
|
return nil
|
|
}
|
|
// Response is valid, but check if peer is signalling that it does not have
|
|
// the requested data. For account range queries that means the state being
|
|
// retrieved was either already pruned remotely, or the peer is not yet
|
|
// synced to our head.
|
|
if len(hashes) == 0 && len(accounts) == 0 && len(proof) == 0 {
|
|
logger.Debug("Peer rejected account range request", "root", s.root)
|
|
s.statelessPeers[peer.ID()] = struct{}{}
|
|
s.lock.Unlock()
|
|
|
|
// Signal this request as failed, and ready for rescheduling
|
|
s.scheduleRevertAccountRequest(req)
|
|
return nil
|
|
}
|
|
root := s.root
|
|
s.lock.Unlock()
|
|
|
|
// Reconstruct a partial trie from the response and verify it
|
|
keys := make([][]byte, len(hashes))
|
|
for i, key := range hashes {
|
|
keys[i] = common.CopyBytes(key[:])
|
|
}
|
|
nodes := make(trienode.ProofList, len(proof))
|
|
for i, node := range proof {
|
|
nodes[i] = node
|
|
}
|
|
cont, err := trie.VerifyRangeProof(root, req.origin[:], keys, accounts, nodes.Set())
|
|
if err != nil {
|
|
logger.Warn("Account range failed proof", "err", err)
|
|
// Signal this request as failed, and ready for rescheduling
|
|
s.scheduleRevertAccountRequest(req)
|
|
return err
|
|
}
|
|
accs := make([]*types.StateAccount, len(accounts))
|
|
for i, account := range accounts {
|
|
acc := new(types.StateAccount)
|
|
if err := rlp.DecodeBytes(account, acc); err != nil {
|
|
panic(err) // We created these blobs, we must be able to decode them
|
|
}
|
|
accs[i] = acc
|
|
}
|
|
response := &accountResponse{
|
|
task: req.task,
|
|
hashes: hashes,
|
|
accounts: accs,
|
|
cont: cont,
|
|
}
|
|
select {
|
|
case req.deliver <- response:
|
|
case <-req.cancel:
|
|
case <-req.stale:
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// OnByteCodes is a callback method to invoke when a batch of contract
|
|
// bytes codes are received from a remote peer.
|
|
func (s *Syncer) OnByteCodes(peer SyncPeer, id uint64, bytecodes [][]byte) error {
|
|
s.lock.RLock()
|
|
syncing := !s.snapped
|
|
s.lock.RUnlock()
|
|
|
|
if syncing {
|
|
return s.onByteCodes(peer, id, bytecodes)
|
|
}
|
|
return s.onBytecodesAfterSync(peer, id, bytecodes)
|
|
}
|
|
|
|
// onByteCodes is a callback method to invoke when a batch of contract
|
|
// bytes codes are received from a remote peer in the syncing phase.
|
|
func (s *Syncer) onByteCodes(peer SyncPeer, id uint64, bytecodes [][]byte) error {
|
|
var size common.StorageSize
|
|
for _, code := range bytecodes {
|
|
size += common.StorageSize(len(code))
|
|
}
|
|
logger := peer.Log().New("reqid", id)
|
|
logger.Trace("Delivering set of bytecodes", "bytecodes", len(bytecodes), "bytes", size)
|
|
|
|
// Whether or not the response is valid, we can mark the peer as idle and
|
|
// notify the scheduler to assign a new task. If the response is invalid,
|
|
// we'll drop the peer in a bit.
|
|
defer func() {
|
|
s.lock.Lock()
|
|
defer s.lock.Unlock()
|
|
if _, ok := s.peers[peer.ID()]; ok {
|
|
s.bytecodeIdlers[peer.ID()] = struct{}{}
|
|
}
|
|
select {
|
|
case s.update <- struct{}{}:
|
|
default:
|
|
}
|
|
}()
|
|
s.lock.Lock()
|
|
// Ensure the response is for a valid request
|
|
req, ok := s.bytecodeReqs[id]
|
|
if !ok {
|
|
// Request stale, perhaps the peer timed out but came through in the end
|
|
logger.Warn("Unexpected bytecode packet")
|
|
s.lock.Unlock()
|
|
return nil
|
|
}
|
|
delete(s.bytecodeReqs, id)
|
|
s.rates.Update(peer.ID(), ByteCodesMsg, time.Since(req.time), len(bytecodes))
|
|
|
|
// Clean up the request timeout timer, we'll see how to proceed further based
|
|
// on the actual delivered content
|
|
if !req.timeout.Stop() {
|
|
// The timeout is already triggered, and this request will be reverted+rescheduled
|
|
s.lock.Unlock()
|
|
return nil
|
|
}
|
|
|
|
// Response is valid, but check if peer is signalling that it does not have
|
|
// the requested data. For bytecode range queries that means the peer is not
|
|
// yet synced.
|
|
if len(bytecodes) == 0 {
|
|
logger.Debug("Peer rejected bytecode request")
|
|
s.statelessPeers[peer.ID()] = struct{}{}
|
|
s.lock.Unlock()
|
|
|
|
// Signal this request as failed, and ready for rescheduling
|
|
s.scheduleRevertBytecodeRequest(req)
|
|
return nil
|
|
}
|
|
s.lock.Unlock()
|
|
|
|
// Cross reference the requested bytecodes with the response to find gaps
|
|
// that the serving node is missing
|
|
hasher := crypto.NewKeccakState()
|
|
hash := make([]byte, 32)
|
|
|
|
codes := make([][]byte, len(req.hashes))
|
|
for i, j := 0, 0; i < len(bytecodes); i++ {
|
|
// Find the next hash that we've been served, leaving misses with nils
|
|
hasher.Reset()
|
|
hasher.Write(bytecodes[i])
|
|
hasher.Read(hash)
|
|
|
|
for j < len(req.hashes) && !bytes.Equal(hash, req.hashes[j][:]) {
|
|
j++
|
|
}
|
|
if j < len(req.hashes) {
|
|
codes[j] = bytecodes[i]
|
|
j++
|
|
continue
|
|
}
|
|
// We've either ran out of hashes, or got unrequested data
|
|
logger.Warn("Unexpected bytecodes", "count", len(bytecodes)-i)
|
|
// Signal this request as failed, and ready for rescheduling
|
|
s.scheduleRevertBytecodeRequest(req)
|
|
return errors.New("unexpected bytecode")
|
|
}
|
|
// Response validated, send it to the scheduler for filling
|
|
response := &bytecodeResponse{
|
|
task: req.task,
|
|
hashes: req.hashes,
|
|
codes: codes,
|
|
}
|
|
select {
|
|
case req.deliver <- response:
|
|
case <-req.cancel:
|
|
case <-req.stale:
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// OnStorage is a callback method to invoke when ranges of storage slots
|
|
// are received from a remote peer.
|
|
func (s *Syncer) OnStorage(peer SyncPeer, id uint64, hashes [][]common.Hash, slots [][][]byte, proof [][]byte) error {
|
|
// Gather some trace stats to aid in debugging issues
|
|
var (
|
|
hashCount int
|
|
slotCount int
|
|
size common.StorageSize
|
|
)
|
|
for _, hashset := range hashes {
|
|
size += common.StorageSize(common.HashLength * len(hashset))
|
|
hashCount += len(hashset)
|
|
}
|
|
for _, slotset := range slots {
|
|
for _, slot := range slotset {
|
|
size += common.StorageSize(len(slot))
|
|
}
|
|
slotCount += len(slotset)
|
|
}
|
|
for _, node := range proof {
|
|
size += common.StorageSize(len(node))
|
|
}
|
|
logger := peer.Log().New("reqid", id)
|
|
logger.Trace("Delivering ranges of storage slots", "accounts", len(hashes), "hashes", hashCount, "slots", slotCount, "proofs", len(proof), "size", size)
|
|
|
|
// Whether or not the response is valid, we can mark the peer as idle and
|
|
// notify the scheduler to assign a new task. If the response is invalid,
|
|
// we'll drop the peer in a bit.
|
|
defer func() {
|
|
s.lock.Lock()
|
|
defer s.lock.Unlock()
|
|
if _, ok := s.peers[peer.ID()]; ok {
|
|
s.storageIdlers[peer.ID()] = struct{}{}
|
|
}
|
|
select {
|
|
case s.update <- struct{}{}:
|
|
default:
|
|
}
|
|
}()
|
|
s.lock.Lock()
|
|
// Ensure the response is for a valid request
|
|
req, ok := s.storageReqs[id]
|
|
if !ok {
|
|
// Request stale, perhaps the peer timed out but came through in the end
|
|
logger.Warn("Unexpected storage ranges packet")
|
|
s.lock.Unlock()
|
|
return nil
|
|
}
|
|
delete(s.storageReqs, id)
|
|
s.rates.Update(peer.ID(), StorageRangesMsg, time.Since(req.time), int(size))
|
|
|
|
// Clean up the request timeout timer, we'll see how to proceed further based
|
|
// on the actual delivered content
|
|
if !req.timeout.Stop() {
|
|
// The timeout is already triggered, and this request will be reverted+rescheduled
|
|
s.lock.Unlock()
|
|
return nil
|
|
}
|
|
|
|
// Reject the response if the hash sets and slot sets don't match, or if the
|
|
// peer sent more data than requested.
|
|
if len(hashes) != len(slots) {
|
|
s.lock.Unlock()
|
|
s.scheduleRevertStorageRequest(req) // reschedule request
|
|
logger.Warn("Hash and slot set size mismatch", "hashset", len(hashes), "slotset", len(slots))
|
|
return errors.New("hash and slot set size mismatch")
|
|
}
|
|
if len(hashes) > len(req.accounts) {
|
|
s.lock.Unlock()
|
|
s.scheduleRevertStorageRequest(req) // reschedule request
|
|
logger.Warn("Hash set larger than requested", "hashset", len(hashes), "requested", len(req.accounts))
|
|
return errors.New("hash set larger than requested")
|
|
}
|
|
// Response is valid, but check if peer is signalling that it does not have
|
|
// the requested data. For storage range queries that means the state being
|
|
// retrieved was either already pruned remotely, or the peer is not yet
|
|
// synced to our head.
|
|
if len(hashes) == 0 && len(proof) == 0 {
|
|
logger.Debug("Peer rejected storage request")
|
|
s.statelessPeers[peer.ID()] = struct{}{}
|
|
s.lock.Unlock()
|
|
s.scheduleRevertStorageRequest(req) // reschedule request
|
|
return nil
|
|
}
|
|
s.lock.Unlock()
|
|
|
|
// Reconstruct the partial tries from the response and verify them
|
|
var cont bool
|
|
|
|
// If a proof was attached while the response is empty, it indicates that the
|
|
// requested range specified with 'origin' is empty. Construct an empty state
|
|
// response locally to finalize the range.
|
|
if len(hashes) == 0 && len(proof) > 0 {
|
|
hashes = append(hashes, []common.Hash{})
|
|
slots = append(slots, [][]byte{})
|
|
}
|
|
for i := 0; i < len(hashes); i++ {
|
|
// Convert the keys and proofs into an internal format
|
|
keys := make([][]byte, len(hashes[i]))
|
|
for j, key := range hashes[i] {
|
|
keys[j] = common.CopyBytes(key[:])
|
|
}
|
|
nodes := make(trienode.ProofList, 0, len(proof))
|
|
if i == len(hashes)-1 {
|
|
for _, node := range proof {
|
|
nodes = append(nodes, node)
|
|
}
|
|
}
|
|
var err error
|
|
if len(nodes) == 0 {
|
|
// No proof has been attached, the response must cover the entire key
|
|
// space and hash to the origin root.
|
|
_, err = trie.VerifyRangeProof(req.roots[i], nil, keys, slots[i], nil)
|
|
if err != nil {
|
|
s.scheduleRevertStorageRequest(req) // reschedule request
|
|
logger.Warn("Storage slots failed proof", "err", err)
|
|
return err
|
|
}
|
|
} else {
|
|
// A proof was attached, the response is only partial, check that the
|
|
// returned data is indeed part of the storage trie
|
|
proofdb := nodes.Set()
|
|
|
|
cont, err = trie.VerifyRangeProof(req.roots[i], req.origin[:], keys, slots[i], proofdb)
|
|
if err != nil {
|
|
s.scheduleRevertStorageRequest(req) // reschedule request
|
|
logger.Warn("Storage range failed proof", "err", err)
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
// Partial tries reconstructed, send them to the scheduler for storage filling
|
|
response := &storageResponse{
|
|
mainTask: req.mainTask,
|
|
subTask: req.subTask,
|
|
accounts: req.accounts,
|
|
roots: req.roots,
|
|
hashes: hashes,
|
|
slots: slots,
|
|
cont: cont,
|
|
}
|
|
select {
|
|
case req.deliver <- response:
|
|
case <-req.cancel:
|
|
case <-req.stale:
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// hashSpace is the total size of the 256 bit hash space for accounts.
|
|
var hashSpace = new(big.Int).Exp(common.Big2, common.Big256, nil)
|
|
|
|
// reportSyncProgress calculates various status reports and provides it to the user.
|
|
func (s *Syncer) reportSyncProgress(force bool) {
|
|
// Don't report all the events, just occasionally
|
|
if !force && time.Since(s.logTime) < 8*time.Second {
|
|
return
|
|
}
|
|
// Don't report anything until we have a meaningful progress
|
|
synced := s.accountBytes + s.bytecodeBytes + s.storageBytes
|
|
if synced == 0 {
|
|
return
|
|
}
|
|
accountGaps := new(big.Int)
|
|
for _, task := range s.tasks {
|
|
accountGaps.Add(accountGaps, new(big.Int).Sub(task.Last.Big(), task.Next.Big()))
|
|
}
|
|
accountFills := new(big.Int).Sub(hashSpace, accountGaps)
|
|
if accountFills.BitLen() == 0 {
|
|
return
|
|
}
|
|
s.logTime = time.Now()
|
|
estBytes := float64(new(big.Int).Div(
|
|
new(big.Int).Mul(new(big.Int).SetUint64(uint64(synced)), hashSpace),
|
|
accountFills,
|
|
).Uint64())
|
|
// Don't report anything until we have a meaningful progress
|
|
if estBytes < 1.0 {
|
|
return
|
|
}
|
|
// Cap the estimated state size using the synced size to avoid negative values
|
|
if estBytes < float64(synced) {
|
|
estBytes = float64(synced)
|
|
}
|
|
elapsed := time.Since(s.startTime)
|
|
estTime := elapsed / time.Duration(synced) * time.Duration(estBytes)
|
|
|
|
// Create a mega progress report
|
|
var (
|
|
progress = fmt.Sprintf("%.2f%%", float64(synced)*100/estBytes)
|
|
accounts = fmt.Sprintf("%v@%v", log.FormatLogfmtUint64(s.accountSynced), s.accountBytes.TerminalString())
|
|
storage = fmt.Sprintf("%v@%v", log.FormatLogfmtUint64(s.storageSynced), s.storageBytes.TerminalString())
|
|
bytecode = fmt.Sprintf("%v@%v", log.FormatLogfmtUint64(s.bytecodeSynced), s.bytecodeBytes.TerminalString())
|
|
)
|
|
log.Info("Syncing: state download in progress", "synced", progress, "state", synced,
|
|
"accounts", accounts, "slots", storage, "codes", bytecode, "eta", common.PrettyDuration(estTime-elapsed))
|
|
}
|
|
|
|
// estimateRemainingSlots tries to determine roughly how many slots are left in
|
|
// a contract storage, based on the number of keys and the last hash. This method
|
|
// assumes that the hashes are lexicographically ordered and evenly distributed.
|
|
func estimateRemainingSlots(hashes int, last common.Hash) (uint64, error) {
|
|
if last == (common.Hash{}) {
|
|
return 0, errors.New("last hash empty")
|
|
}
|
|
space := new(big.Int).Mul(math.MaxBig256, big.NewInt(int64(hashes)))
|
|
space.Div(space, last.Big())
|
|
if !space.IsUint64() {
|
|
// Gigantic address space probably due to too few or malicious slots
|
|
return 0, errors.New("too few slots for estimation")
|
|
}
|
|
return space.Uint64() - uint64(hashes), nil
|
|
}
|
|
|
|
// capacitySort implements the Sort interface, allowing sorting by peer message
|
|
// throughput. Note, callers should use sort.Reverse to get the desired effect
|
|
// of highest capacity being at the front.
|
|
type capacitySort struct {
|
|
ids []string
|
|
caps []int
|
|
}
|
|
|
|
func (s *capacitySort) Len() int {
|
|
return len(s.ids)
|
|
}
|
|
|
|
func (s *capacitySort) Less(i, j int) bool {
|
|
return s.caps[i] < s.caps[j]
|
|
}
|
|
|
|
func (s *capacitySort) Swap(i, j int) {
|
|
s.ids[i], s.ids[j] = s.ids[j], s.ids[i]
|
|
s.caps[i], s.caps[j] = s.caps[j], s.caps[i]
|
|
}
|
|
|
|
// sortByAccountPath takes hashes and paths, and sorts them. After that, it generates
|
|
// the TrieNodePaths and merges paths which belongs to the same account path.
|
|
func sortByAccountPath(paths []string, hashes []common.Hash) ([]string, []common.Hash, []trie.SyncPath, []TrieNodePathSet) {
|
|
syncPaths := make([]trie.SyncPath, len(paths))
|
|
for i, path := range paths {
|
|
syncPaths[i] = trie.NewSyncPath([]byte(path))
|
|
}
|
|
n := &healRequestSort{paths, hashes, syncPaths}
|
|
sort.Sort(n)
|
|
pathsets := n.Merge()
|
|
return n.paths, n.hashes, n.syncPaths, pathsets
|
|
}
|