mirror of
https://github.com/ipfs/kubo.git
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113 lines
3.0 KiB
Go
113 lines
3.0 KiB
Go
package bitswap
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import (
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"context"
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"time"
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blockstore "github.com/ipfs/go-ipfs/blocks/blockstore"
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tn "github.com/ipfs/go-ipfs/exchange/bitswap/testnet"
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datastore2 "github.com/ipfs/go-ipfs/thirdparty/datastore2"
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delay "github.com/ipfs/go-ipfs/thirdparty/delay"
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testutil "gx/ipfs/QmVvkK7s5imCiq3JVbL3pGfnhcCnf3LrFJPF4GE2sAoGZf/go-testutil"
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ds "gx/ipfs/QmPpegoMqhAEqjncrzArm7KVWAkCm78rqL2DPuNjhPrshg/go-datastore"
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ds_sync "gx/ipfs/QmPpegoMqhAEqjncrzArm7KVWAkCm78rqL2DPuNjhPrshg/go-datastore/sync"
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p2ptestutil "gx/ipfs/QmYVR3C8DWPHdHxvLtNFYfjsXgaRAdh6hPMNH3KiwCgu4o/go-libp2p-netutil"
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peer "gx/ipfs/QmZoWKhxUmZ2seW4BzX6fJkNR8hh9PsGModr7q171yq2SS/go-libp2p-peer"
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)
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// WARNING: this uses RandTestBogusIdentity DO NOT USE for NON TESTS!
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func NewTestSessionGenerator(
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net tn.Network) SessionGenerator {
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ctx, cancel := context.WithCancel(context.Background())
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return SessionGenerator{
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net: net,
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seq: 0,
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ctx: ctx, // TODO take ctx as param to Next, Instances
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cancel: cancel,
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}
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}
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// TODO move this SessionGenerator to the core package and export it as the core generator
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type SessionGenerator struct {
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seq int
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net tn.Network
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ctx context.Context
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cancel context.CancelFunc
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}
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func (g *SessionGenerator) Close() error {
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g.cancel()
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return nil // for Closer interface
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}
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func (g *SessionGenerator) Next() Instance {
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g.seq++
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p, err := p2ptestutil.RandTestBogusIdentity()
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if err != nil {
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panic("FIXME") // TODO change signature
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}
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return MkSession(g.ctx, g.net, p)
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}
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func (g *SessionGenerator) Instances(n int) []Instance {
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var instances []Instance
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for j := 0; j < n; j++ {
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inst := g.Next()
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instances = append(instances, inst)
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}
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for i, inst := range instances {
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for j := i + 1; j < len(instances); j++ {
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oinst := instances[j]
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inst.Exchange.network.ConnectTo(context.Background(), oinst.Peer)
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}
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}
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return instances
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}
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type Instance struct {
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Peer peer.ID
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Exchange *Bitswap
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blockstore blockstore.Blockstore
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blockstoreDelay delay.D
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}
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func (i *Instance) Blockstore() blockstore.Blockstore {
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return i.blockstore
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}
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func (i *Instance) SetBlockstoreLatency(t time.Duration) time.Duration {
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return i.blockstoreDelay.Set(t)
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}
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// session creates a test bitswap session.
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//
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// NB: It's easy make mistakes by providing the same peer ID to two different
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// sessions. To safeguard, use the SessionGenerator to generate sessions. It's
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// just a much better idea.
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func MkSession(ctx context.Context, net tn.Network, p testutil.Identity) Instance {
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bsdelay := delay.Fixed(0)
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adapter := net.Adapter(p)
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dstore := ds_sync.MutexWrap(datastore2.WithDelay(ds.NewMapDatastore(), bsdelay))
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bstore, err := blockstore.CachedBlockstore(ctx,
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blockstore.NewBlockstore(ds_sync.MutexWrap(dstore)),
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blockstore.DefaultCacheOpts())
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if err != nil {
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panic(err.Error()) // FIXME perhaps change signature and return error.
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}
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const alwaysSendToPeer = true
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bs := New(ctx, p.ID(), adapter, bstore, alwaysSendToPeer).(*Bitswap)
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return Instance{
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Peer: p.ID(),
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Exchange: bs,
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blockstore: bstore,
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blockstoreDelay: bsdelay,
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}
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}
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