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ring_test.go
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ring_test.go
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package ring
import (
"fmt"
"testing"
"time"
"github.com/stretchr/testify/require"
"github.com/travisjeffery/go-dynaport"
)
const (
objectKey = "object-test-key"
)
func TestRing_GetLoadBalancers(t *testing.T) {
h := &testHandler{}
memberCount := 3
h.joins = make(chan map[string]string, memberCount)
h.leaves = make(chan string, memberCount)
leaderIndex := 0
loadBalancerIndex := 2
ringMembers := setupTestRingMembers(t, memberCount, func(ringMemberConfig *Config, i int) {
if i == loadBalancerIndex {
ringMemberConfig.MemberType = LoadBalancerMember
} else {
ringMemberConfig.MemberType = ShardMember
}
}, func(ringMember *Ring, i int) {
if i == leaderIndex {
ringMember.AddListener("test-listener-0", h)
}
})
loadBalancers := ringMembers[leaderIndex].GetLoadBalancers()
require.Equal(t, 1, len(loadBalancers))
_, ok := ringMembers[loadBalancerIndex].Tags["rpc_addr"]
require.True(t, ok)
require.Equal(t, ringMembers[loadBalancerIndex].NodeName, loadBalancers[0])
defer func() {
for _, ringMember := range ringMembers {
err := ringMember.Shutdown()
require.NoError(t, err)
}
}()
}
func TestRing_ConsistentHashRouter_For_Single_Node_Ring(t *testing.T) {
ringMembers := setupTestRingMembers(t, 1, nil, nil)
time.Sleep(100 * time.Millisecond)
node, ok := ringMembers[0].GetNode(objectKey)
require.Equal(t, true, ok)
require.NotEmpty(t, node)
}
func TestRing_ConsistentHashRouter(t *testing.T) {
ringMembers := setupTestRingMembers(t, 2, nil, nil)
node, ok := ringMembers[0].GetNode(objectKey)
require.Equal(t, true, ok)
require.NotEmpty(t, node)
}
func TestRing_ConfigurationRequest(t *testing.T) {
h := &testHandler{}
h.joins = make(chan map[string]string, 1)
h.leaves = make(chan string, 1)
// 3 nodes on the ring
ringMember0 := setupRing_Member(t, []string{}, 0, func(config *Config, i int) {
config.MemberType = ShardMember
})
ringMember1 := setupRing_Member(t, []string{ringMember0.BindAddr}, 1, func(config *Config, i int) {
config.MemberType = ShardMember
})
ringMember2 := setupRing_Member(t, []string{ringMember0.BindAddr, ringMember1.BindAddr}, 2, func(config *Config, i int) {
config.MemberType = ShardMember
})
ringMember3 := setupRing_Member(t, []string{ringMember0.BindAddr, ringMember1.BindAddr}, 2, func(config *Config, i int) {
config.MemberType = ShardMember
})
resp := &ConfigurationResponse{}
err := ringMember2.transport.SendConfigurationRequest(ServerAddress(ringMember0.BindAddr), &ConfigurationRequest{}, resp)
require.NoError(t, err)
require.NotNil(t, resp.StartupConfig)
require.Equal(t, 3, len(resp.StartupConfig.Nodes)) // total nodes on the ring.
for _, node := range resp.StartupConfig.Nodes {
require.Equal(t, 3, len(node.VirtualNodes)) // we have set the number of virtual nodes to 3.
}
resp = &ConfigurationResponse{}
err = ringMember3.transport.SendConfigurationRequest(ServerAddress(ringMember1.BindAddr), &ConfigurationRequest{}, resp)
require.NoError(t, err)
require.NotNil(t, resp.StartupConfig)
require.Equal(t, 3, len(resp.StartupConfig.Nodes)) // total nodes on the ring.
for _, node := range resp.StartupConfig.Nodes {
require.Equal(t, 3, len(node.VirtualNodes)) // we have set the number of virtual nodes to 3.
}
}
type testHandler struct {
joins chan map[string]string
leaves chan string
}
func (h *testHandler) Join(nodeKey string, tags map[string]string) error {
if h.joins != nil {
h.joins <- tags
}
return nil
}
func (h *testHandler) Leave(nodeKey string, tags map[string]string) error {
if h.leaves != nil {
h.leaves <- nodeKey
}
return nil
}
func setupTestRingMembers(t *testing.T, count int, beforeRingMember func(*Config, int), afterRingMember func(*Ring, int)) []*Ring {
var ringMembers []*Ring
for i := 0; i < count; i++ {
var seedAddresses []string
if i > 0 {
seedAddresses = []string{ringMembers[0].BindAddr}
}
ringMember := setupRing_Member(t, seedAddresses, i, beforeRingMember)
if afterRingMember != nil {
afterRingMember(ringMember, i)
}
ringMembers = append(ringMembers, ringMember)
}
return ringMembers
}
func setupRing_Member(t *testing.T, seedAddresses []string, i int, beforeRingMember func(config *Config, i int)) *Ring {
t.Helper()
ports := dynaport.Get(2)
bindAddr := fmt.Sprintf("%s:%d", "127.0.0.1", ports[0])
rpcPort := ports[1]
config := Config{
NodeName: fmt.Sprintf("Ring Member %d", i),
BindAddr: bindAddr,
Tags: map[string]string{
"rpc_addr": fmt.Sprintf("localhost:%d", rpcPort),
},
VirtualNodeCount: 3,
SeedAddresses: seedAddresses,
Timeout: time.Second,
}
if beforeRingMember != nil {
beforeRingMember(&config, i)
}
ringMember, err := NewRing(config)
require.NoError(t, err)
return ringMember
}