141 lines
5.1 KiB
Go
141 lines
5.1 KiB
Go
// Copyright 2015 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 downloader
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import (
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"fmt"
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"math/big"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/types"
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)
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// headerCheckFn is a callback type for verifying a header's presence in the local chain.
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type headerCheckFn func(common.Hash) bool
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// blockCheckFn is a callback type for verifying a block's presence in the local chain.
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type blockCheckFn func(common.Hash) bool
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// headerRetrievalFn is a callback type for retrieving a header from the local chain.
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type headerRetrievalFn func(common.Hash) *types.Header
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// blockRetrievalFn is a callback type for retrieving a block from the local chain.
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type blockRetrievalFn func(common.Hash) *types.Block
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// headHeaderRetrievalFn is a callback type for retrieving the head header from the local chain.
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type headHeaderRetrievalFn func() *types.Header
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// headBlockRetrievalFn is a callback type for retrieving the head block from the local chain.
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type headBlockRetrievalFn func() *types.Block
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// headFastBlockRetrievalFn is a callback type for retrieving the head fast block from the local chain.
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type headFastBlockRetrievalFn func() *types.Block
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// headBlockCommitterFn is a callback for directly committing the head block to a certain entity.
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type headBlockCommitterFn func(common.Hash) error
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// tdRetrievalFn is a callback type for retrieving the total difficulty of a local block.
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type tdRetrievalFn func(common.Hash) *big.Int
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// headerChainInsertFn is a callback type to insert a batch of headers into the local chain.
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type headerChainInsertFn func([]*types.Header, int) (int, error)
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// blockChainInsertFn is a callback type to insert a batch of blocks into the local chain.
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type blockChainInsertFn func(types.Blocks) (int, error)
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// receiptChainInsertFn is a callback type to insert a batch of receipts into the local chain.
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type receiptChainInsertFn func(types.Blocks, []types.Receipts) (int, error)
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// chainRollbackFn is a callback type to remove a few recently added elements from the local chain.
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type chainRollbackFn func([]common.Hash)
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// peerDropFn is a callback type for dropping a peer detected as malicious.
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type peerDropFn func(id string)
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// dataPack is a data message returned by a peer for some query.
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type dataPack interface {
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PeerId() string
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Items() int
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Stats() string
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}
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// hashPack is a batch of block hashes returned by a peer (eth/61).
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type hashPack struct {
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peerId string
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hashes []common.Hash
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}
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func (p *hashPack) PeerId() string { return p.peerId }
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func (p *hashPack) Items() int { return len(p.hashes) }
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func (p *hashPack) Stats() string { return fmt.Sprintf("%d", len(p.hashes)) }
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// blockPack is a batch of blocks returned by a peer (eth/61).
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type blockPack struct {
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peerId string
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blocks []*types.Block
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}
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func (p *blockPack) PeerId() string { return p.peerId }
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func (p *blockPack) Items() int { return len(p.blocks) }
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func (p *blockPack) Stats() string { return fmt.Sprintf("%d", len(p.blocks)) }
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// headerPack is a batch of block headers returned by a peer.
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type headerPack struct {
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peerId string
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headers []*types.Header
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}
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func (p *headerPack) PeerId() string { return p.peerId }
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func (p *headerPack) Items() int { return len(p.headers) }
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func (p *headerPack) Stats() string { return fmt.Sprintf("%d", len(p.headers)) }
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// bodyPack is a batch of block bodies returned by a peer.
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type bodyPack struct {
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peerId string
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transactions [][]*types.Transaction
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uncles [][]*types.Header
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}
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func (p *bodyPack) PeerId() string { return p.peerId }
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func (p *bodyPack) Items() int {
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if len(p.transactions) <= len(p.uncles) {
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return len(p.transactions)
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}
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return len(p.uncles)
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}
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func (p *bodyPack) Stats() string { return fmt.Sprintf("%d:%d", len(p.transactions), len(p.uncles)) }
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// receiptPack is a batch of receipts returned by a peer.
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type receiptPack struct {
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peerId string
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receipts [][]*types.Receipt
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}
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func (p *receiptPack) PeerId() string { return p.peerId }
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func (p *receiptPack) Items() int { return len(p.receipts) }
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func (p *receiptPack) Stats() string { return fmt.Sprintf("%d", len(p.receipts)) }
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// statePack is a batch of states returned by a peer.
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type statePack struct {
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peerId string
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states [][]byte
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}
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func (p *statePack) PeerId() string { return p.peerId }
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func (p *statePack) Items() int { return len(p.states) }
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func (p *statePack) Stats() string { return fmt.Sprintf("%d", len(p.states)) }
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