kubo/exchange/bitswap/testutils.go
Steven Allen 3eba14aa24 gx update
Updates:

* go-kad-dht: Query performance improvements, DHT client fixes, validates
  records on *local* put.
* go-libp2p-swarm/go-libp2p-transport: Timeout improvements.
* go-multiaddr-net: Exposes useful Conn methods (CloseWrite, CloseRead, etc.)
* go-log: fixes possible panic when enabling/disabling events.
* go-multiaddr: fixes possible panic when stringifying malformed multiaddrs,
  adds support for consuming /p2p/ multiaddrs.

fixes #5113
unblocks #4895

License: MIT
Signed-off-by: Steven Allen <steven@stebalien.com>
2018-06-26 17:11:33 -07:00

111 lines
3.1 KiB
Go

package bitswap
import (
"context"
"time"
tn "github.com/ipfs/go-ipfs/exchange/bitswap/testnet"
delay "gx/ipfs/QmRJVNatYJwTAHgdSM1Xef9QVQ1Ch3XHdmcrykjP5Y4soL/go-ipfs-delay"
testutil "gx/ipfs/QmcW4FGAt24fdK1jBgWQn3yP4R9ZLyWQqjozv9QK7epRhL/go-testutil"
p2ptestutil "gx/ipfs/QmcxUtMB5sJrXR3znSvkrDd2ghvwGM8rLRqwJiPUdgQwat/go-libp2p-netutil"
peer "gx/ipfs/QmdVrMn1LhB4ybb8hMVaMLXnA8XRSewMnK6YqXKXoTcRvN/go-libp2p-peer"
blockstore "gx/ipfs/QmdpuJBPBZ6sLPj9BQpn3Rpi38BT2cF1QMiUfyzNWeySW4/go-ipfs-blockstore"
ds "gx/ipfs/QmeiCcJfDW1GJnWUArudsv5rQsihpi4oyddPhdqo3CfX6i/go-datastore"
delayed "gx/ipfs/QmeiCcJfDW1GJnWUArudsv5rQsihpi4oyddPhdqo3CfX6i/go-datastore/delayed"
ds_sync "gx/ipfs/QmeiCcJfDW1GJnWUArudsv5rQsihpi4oyddPhdqo3CfX6i/go-datastore/sync"
)
// WARNING: this uses RandTestBogusIdentity DO NOT USE for NON TESTS!
func NewTestSessionGenerator(
net tn.Network) SessionGenerator {
ctx, cancel := context.WithCancel(context.Background())
return SessionGenerator{
net: net,
seq: 0,
ctx: ctx, // TODO take ctx as param to Next, Instances
cancel: cancel,
}
}
// TODO move this SessionGenerator to the core package and export it as the core generator
type SessionGenerator struct {
seq int
net tn.Network
ctx context.Context
cancel context.CancelFunc
}
func (g *SessionGenerator) Close() error {
g.cancel()
return nil // for Closer interface
}
func (g *SessionGenerator) Next() Instance {
g.seq++
p, err := p2ptestutil.RandTestBogusIdentity()
if err != nil {
panic("FIXME") // TODO change signature
}
return MkSession(g.ctx, g.net, p)
}
func (g *SessionGenerator) Instances(n int) []Instance {
var instances []Instance
for j := 0; j < n; j++ {
inst := g.Next()
instances = append(instances, inst)
}
for i, inst := range instances {
for j := i + 1; j < len(instances); j++ {
oinst := instances[j]
inst.Exchange.network.ConnectTo(context.Background(), oinst.Peer)
}
}
return instances
}
type Instance struct {
Peer peer.ID
Exchange *Bitswap
blockstore blockstore.Blockstore
blockstoreDelay delay.D
}
func (i *Instance) Blockstore() blockstore.Blockstore {
return i.blockstore
}
func (i *Instance) SetBlockstoreLatency(t time.Duration) time.Duration {
return i.blockstoreDelay.Set(t)
}
// session creates a test bitswap session.
//
// NB: It's easy make mistakes by providing the same peer ID to two different
// sessions. To safeguard, use the SessionGenerator to generate sessions. It's
// just a much better idea.
func MkSession(ctx context.Context, net tn.Network, p testutil.Identity) Instance {
bsdelay := delay.Fixed(0)
adapter := net.Adapter(p)
dstore := ds_sync.MutexWrap(delayed.New(ds.NewMapDatastore(), bsdelay))
bstore, err := blockstore.CachedBlockstore(ctx,
blockstore.NewBlockstore(ds_sync.MutexWrap(dstore)),
blockstore.DefaultCacheOpts())
if err != nil {
panic(err.Error()) // FIXME perhaps change signature and return error.
}
bs := New(ctx, adapter, bstore).(*Bitswap)
return Instance{
Peer: p.ID(),
Exchange: bs,
blockstore: bstore,
blockstoreDelay: bsdelay,
}
}