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acceptor_test.go
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acceptor_test.go
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package ring
import (
"fmt"
"github.com/stretchr/testify/require"
"github.com/travisjeffery/go-dynaport"
"strconv"
"testing"
"time"
)
func TestNewAcceptor(t *testing.T) {
nodeCount := 10
var nodes []*testPaxosNode
var members []*membership
for i := 0; i < nodeCount; i++ {
transport := setupAcceptor_Transport(t)
acceptor := newAcceptor(fmt.Sprintf("acceptor-%d", i), transport, nil)
proposer := newProposer(fmt.Sprintf("proposer-%d", i), transport, nil)
node := &testPaxosNode{
acceptor: acceptor,
proposor: proposer,
}
members = setupAcceptor_Membership(t, members, ShardMember, node)
nodes = append(nodes, node)
}
require.Equal(t, nodeCount, len(members[0].Members()))
time.Sleep(1 * time.Second)
// maintain the members
require.Equal(t, nodeCount, len(members[0].Members()))
key := "round-1"
for i := 0; i < nodeCount; i++ {
proposal := &proposal{
Key: key,
Value: []byte(fmt.Sprintf("Value_%d", i)),
}
err := nodes[i].proposor.Propose(proposal)
require.NoError(t, err)
}
value := &proposal{}
// We need the same value from all learners.
for i, node := range nodes {
accepted, err := node.acceptor.learn(key, 2*time.Second)
require.NoError(t, err)
if i == 0 {
value = accepted
} else {
require.Equal(t, value, accepted)
}
}
defer func() {
for _, member := range members {
err := member.Leave()
require.NoError(t, err)
}
}()
}
type testPaxosNode struct {
acceptor *acceptor
proposor *proposer
}
func setupAcceptor_Transport(t *testing.T) *Transport {
t.Helper()
ports := dynaport.Get(1)
rpcAddr := fmt.Sprintf("localhost:%d", ports[0])
streamLayer, err := newTCPStreamLayer(rpcAddr, nil)
require.NoError(t, err)
return NewTransportWithConfig(&TransportConfig{
Stream: streamLayer,
Timeout: 250 * time.Millisecond,
})
}
func setupAcceptor_Membership(t *testing.T, members []*membership, memberType MemberType, node *testPaxosNode) []*membership {
id := len(members)
ports := dynaport.Get(1)
addr := fmt.Sprintf("%s:%d", "127.0.0.1", ports[0])
tags := map[string]string{
"rpc_addr": addr,
virtualNodesJSON: "3",
memberTypeJSON: strconv.Itoa(int(memberType)),
ringRPCAddrJSON: node.proposor.transport.stream.Addr().String(),
}
c := MembershipConfig{
NodeName: fmt.Sprintf("%d", id),
BindAddr: addr,
Tags: tags,
}
h := &handlerWrapper{listeners: make(map[string]Handler)}
h.listeners["learner"] = node.acceptor
h.listeners["proposer"] = node.proposor
if len(members) != 0 {
c.SeedAddresses = []string{members[0].BindAddr}
}
m, err := newMemberShip(h, c)
require.NoError(t, err)
members = append(members, m)
return members
}