fetcher

package
v1.0.2 Latest Latest
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Published: Aug 20, 2015 License: GPL-3.0 Imports: 11 Imported by: 0

Documentation

Overview

Package fetcher contains the block announcement based synchonisation.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type Fetcher

type Fetcher struct {
	// contains filtered or unexported fields
}

Fetcher is responsible for accumulating block announcements from various peers and scheduling them for retrieval.

func New

func New(getBlock blockRetrievalFn, validateBlock blockValidatorFn, broadcastBlock blockBroadcasterFn, chainHeight chainHeightFn, insertChain chainInsertFn, dropPeer peerDropFn) *Fetcher

New creates a block fetcher to retrieve blocks based on hash announcements.

func (*Fetcher) Enqueue

func (f *Fetcher) Enqueue(peer string, block *types.Block) error

Enqueue tries to fill gaps the the fetcher's future import queue.

func (*Fetcher) Filter

func (f *Fetcher) Filter(blocks types.Blocks) types.Blocks

Filter extracts all the blocks that were explicitly requested by the fetcher, returning those that should be handled differently.

func (*Fetcher) Notify

func (f *Fetcher) Notify(peer string, hash common.Hash, time time.Time, fetcher blockRequesterFn) error

Notify announces the fetcher of the potential availability of a new block in the network.

func (*Fetcher) Start

func (f *Fetcher) Start()

Start boots up the announcement based synchoniser, accepting and processing hash notifications and block fetches until termination requested.

func (*Fetcher) Stop

func (f *Fetcher) Stop()

Stop terminates the announcement based synchroniser, canceling all pending operations.

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