forked from cockroachdb/cockroach
/
local_test_cluster_util.go
86 lines (77 loc) · 2.64 KB
/
local_test_cluster_util.go
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// Copyright 2015 The Cockroach Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied. See the License for the specific language governing
// permissions and limitations under the License.
//
// Author: Spencer Kimball (spencer.kimball@gmail.com)
package kv
import (
"time"
"golang.org/x/net/context"
opentracing "github.com/opentracing/opentracing-go"
"github.com/cockroachdb/cockroach/base"
"github.com/cockroachdb/cockroach/gossip"
"github.com/cockroachdb/cockroach/internal/client"
"github.com/cockroachdb/cockroach/roachpb"
"github.com/cockroachdb/cockroach/rpc"
"github.com/cockroachdb/cockroach/util/hlc"
"github.com/cockroachdb/cockroach/util/stop"
"github.com/cockroachdb/cockroach/util/tracing"
)
// localTestClusterTransport augments senderTransport with an optional
// delay for each RPC, to simulate latency for benchmarking.
// TODO(bdarnell): there's probably a better place to put this.
type localTestClusterTransport struct {
Transport
latency time.Duration
}
func (l *localTestClusterTransport) SendNext(done chan<- BatchCall) {
if l.latency > 0 {
time.Sleep(l.latency)
}
l.Transport.SendNext(done)
}
// InitSenderForLocalTestCluster initializes a TxnCoordSender that can be used
// with LocalTestCluster.
func InitSenderForLocalTestCluster(
nodeDesc *roachpb.NodeDescriptor,
tracer opentracing.Tracer,
clock *hlc.Clock,
latency time.Duration,
stores client.Sender,
stopper *stop.Stopper,
gossip *gossip.Gossip,
) client.Sender {
retryOpts := base.DefaultRetryOptions()
retryOpts.Closer = stopper.ShouldQuiesce()
senderTransportFactory := SenderTransportFactory(tracer, stores)
distSender := NewDistSender(&DistSenderConfig{
Clock: clock,
RPCRetryOptions: &retryOpts,
nodeDescriptor: nodeDesc,
TransportFactory: func(
opts SendOptions,
rpcContext *rpc.Context,
replicas ReplicaSlice,
args roachpb.BatchRequest,
) (Transport, error) {
transport, err := senderTransportFactory(opts, rpcContext, replicas, args)
if err != nil {
return nil, err
}
return &localTestClusterTransport{transport, latency}, nil
},
}, gossip)
ctx := tracing.WithTracer(context.Background(), tracer)
return NewTxnCoordSender(ctx, distSender, clock, false, /* !linearizable */
stopper, MakeTxnMetrics())
}