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package consumer
import (
"testing"
"time"
)
func TestRebalanceTimeoutManager_CheckRebalanceTimeouts(t *testing.T) {
coordinator := NewGroupCoordinator()
defer coordinator.Close()
rtm := coordinator.rebalanceTimeoutManager
// Create a group with a member that has a short rebalance timeout
group := coordinator.GetOrCreateGroup("test-group")
group.Mu.Lock()
group.State = GroupStatePreparingRebalance
member := &GroupMember{
ID: "member1",
ClientID: "client1",
SessionTimeout: 30000, // 30 seconds
RebalanceTimeout: 1000, // 1 second (very short for testing)
State: MemberStatePending,
LastHeartbeat: time.Now(),
JoinedAt: time.Now().Add(-2 * time.Second), // Joined 2 seconds ago
}
group.Members["member1"] = member
group.Mu.Unlock()
// Check timeouts - member should be evicted
rtm.CheckRebalanceTimeouts()
group.Mu.RLock()
if len(group.Members) != 0 {
t.Errorf("Expected member to be evicted due to rebalance timeout, but %d members remain", len(group.Members))
}
if group.State != GroupStateEmpty {
t.Errorf("Expected group state to be Empty after member eviction, got %s", group.State.String())
}
group.Mu.RUnlock()
}
func TestRebalanceTimeoutManager_SessionTimeoutFallback(t *testing.T) {
coordinator := NewGroupCoordinator()
defer coordinator.Close()
rtm := coordinator.rebalanceTimeoutManager
// Create a group with a member that has exceeded session timeout
group := coordinator.GetOrCreateGroup("test-group")
group.Mu.Lock()
group.State = GroupStatePreparingRebalance
member := &GroupMember{
ID: "member1",
ClientID: "client1",
SessionTimeout: 1000, // 1 second
RebalanceTimeout: 30000, // 30 seconds
State: MemberStatePending,
LastHeartbeat: time.Now().Add(-2 * time.Second), // Last heartbeat 2 seconds ago
JoinedAt: time.Now(),
}
group.Members["member1"] = member
group.Mu.Unlock()
// Check timeouts - member should be evicted due to session timeout
rtm.CheckRebalanceTimeouts()
group.Mu.RLock()
if len(group.Members) != 0 {
t.Errorf("Expected member to be evicted due to session timeout, but %d members remain", len(group.Members))
}
group.Mu.RUnlock()
}
func TestRebalanceTimeoutManager_LeaderEviction(t *testing.T) {
coordinator := NewGroupCoordinator()
defer coordinator.Close()
rtm := coordinator.rebalanceTimeoutManager
// Create a group with leader and another member
group := coordinator.GetOrCreateGroup("test-group")
group.Mu.Lock()
group.State = GroupStatePreparingRebalance
group.Leader = "member1"
// Leader with expired rebalance timeout
leader := &GroupMember{
ID: "member1",
ClientID: "client1",
SessionTimeout: 30000,
RebalanceTimeout: 1000,
State: MemberStatePending,
LastHeartbeat: time.Now(),
JoinedAt: time.Now().Add(-2 * time.Second),
}
group.Members["member1"] = leader
// Another member that's still valid
member2 := &GroupMember{
ID: "member2",
ClientID: "client2",
SessionTimeout: 30000,
RebalanceTimeout: 30000,
State: MemberStatePending,
LastHeartbeat: time.Now(),
JoinedAt: time.Now(),
}
group.Members["member2"] = member2
group.Mu.Unlock()
// Check timeouts - leader should be evicted, new leader selected
rtm.CheckRebalanceTimeouts()
group.Mu.RLock()
if len(group.Members) != 1 {
t.Errorf("Expected 1 member to remain after leader eviction, got %d", len(group.Members))
}
if group.Leader != "member2" {
t.Errorf("Expected member2 to become new leader, got %s", group.Leader)
}
if group.State != GroupStatePreparingRebalance {
t.Errorf("Expected group to restart rebalancing after leader eviction, got %s", group.State.String())
}
group.Mu.RUnlock()
}
func TestRebalanceTimeoutManager_IsRebalanceStuck(t *testing.T) {
coordinator := NewGroupCoordinator()
defer coordinator.Close()
rtm := coordinator.rebalanceTimeoutManager
// Create a group that's been rebalancing for a while
group := coordinator.GetOrCreateGroup("test-group")
group.Mu.Lock()
group.State = GroupStatePreparingRebalance
group.LastActivity = time.Now().Add(-15 * time.Minute) // 15 minutes ago
group.Mu.Unlock()
// Check if rebalance is stuck (max 10 minutes)
maxDuration := 10 * time.Minute
if !rtm.IsRebalanceStuck(group, maxDuration) {
t.Error("Expected rebalance to be detected as stuck")
}
// Test with a group that's not stuck
group.Mu.Lock()
group.LastActivity = time.Now().Add(-5 * time.Minute) // 5 minutes ago
group.Mu.Unlock()
if rtm.IsRebalanceStuck(group, maxDuration) {
t.Error("Expected rebalance to not be detected as stuck")
}
// Test with stable group (should not be stuck)
group.Mu.Lock()
group.State = GroupStateStable
group.LastActivity = time.Now().Add(-15 * time.Minute)
group.Mu.Unlock()
if rtm.IsRebalanceStuck(group, maxDuration) {
t.Error("Stable group should not be detected as stuck")
}
}
func TestRebalanceTimeoutManager_ForceCompleteRebalance(t *testing.T) {
coordinator := NewGroupCoordinator()
defer coordinator.Close()
rtm := coordinator.rebalanceTimeoutManager
// Test forcing completion from PreparingRebalance
group := coordinator.GetOrCreateGroup("test-group")
group.Mu.Lock()
group.State = GroupStatePreparingRebalance
member := &GroupMember{
ID: "member1",
State: MemberStatePending,
}
group.Members["member1"] = member
group.Mu.Unlock()
rtm.ForceCompleteRebalance(group)
group.Mu.RLock()
if group.State != GroupStateCompletingRebalance {
t.Errorf("Expected group state to be CompletingRebalance, got %s", group.State.String())
}
group.Mu.RUnlock()
// Test forcing completion from CompletingRebalance
rtm.ForceCompleteRebalance(group)
group.Mu.RLock()
if group.State != GroupStateStable {
t.Errorf("Expected group state to be Stable, got %s", group.State.String())
}
if member.State != MemberStateStable {
t.Errorf("Expected member state to be Stable, got %s", member.State.String())
}
group.Mu.RUnlock()
}
func TestRebalanceTimeoutManager_GetRebalanceStatus(t *testing.T) {
coordinator := NewGroupCoordinator()
defer coordinator.Close()
rtm := coordinator.rebalanceTimeoutManager
// Test with non-existent group
status := rtm.GetRebalanceStatus("non-existent")
if status != nil {
t.Error("Expected nil status for non-existent group")
}
// Create a group with members
group := coordinator.GetOrCreateGroup("test-group")
group.Mu.Lock()
group.State = GroupStatePreparingRebalance
group.Generation = 5
group.Leader = "member1"
group.LastActivity = time.Now().Add(-2 * time.Minute)
member1 := &GroupMember{
ID: "member1",
State: MemberStatePending,
LastHeartbeat: time.Now().Add(-30 * time.Second),
JoinedAt: time.Now().Add(-2 * time.Minute),
SessionTimeout: 30000, // 30 seconds
RebalanceTimeout: 300000, // 5 minutes
}
group.Members["member1"] = member1
member2 := &GroupMember{
ID: "member2",
State: MemberStatePending,
LastHeartbeat: time.Now().Add(-10 * time.Second),
JoinedAt: time.Now().Add(-1 * time.Minute),
SessionTimeout: 60000, // 1 minute
RebalanceTimeout: 180000, // 3 minutes
}
group.Members["member2"] = member2
group.Mu.Unlock()
// Get status
status = rtm.GetRebalanceStatus("test-group")
if status == nil {
t.Fatal("Expected non-nil status")
}
if status.GroupID != "test-group" {
t.Errorf("Expected group ID 'test-group', got %s", status.GroupID)
}
if status.State != GroupStatePreparingRebalance {
t.Errorf("Expected state PreparingRebalance, got %s", status.State.String())
}
if status.Generation != 5 {
t.Errorf("Expected generation 5, got %d", status.Generation)
}
if status.MemberCount != 2 {
t.Errorf("Expected 2 members, got %d", status.MemberCount)
}
if status.Leader != "member1" {
t.Errorf("Expected leader 'member1', got %s", status.Leader)
}
if !status.IsRebalancing {
t.Error("Expected IsRebalancing to be true")
}
if len(status.Members) != 2 {
t.Errorf("Expected 2 member statuses, got %d", len(status.Members))
}
// Check member timeout calculations
for _, memberStatus := range status.Members {
if memberStatus.SessionTimeRemaining < 0 {
t.Errorf("Session time remaining should not be negative for member %s", memberStatus.MemberID)
}
if memberStatus.RebalanceTimeRemaining < 0 {
t.Errorf("Rebalance time remaining should not be negative for member %s", memberStatus.MemberID)
}
}
}
func TestRebalanceTimeoutManager_DefaultRebalanceTimeout(t *testing.T) {
coordinator := NewGroupCoordinator()
defer coordinator.Close()
rtm := coordinator.rebalanceTimeoutManager
// Create a group with a member that has no rebalance timeout set (0)
group := coordinator.GetOrCreateGroup("test-group")
group.Mu.Lock()
group.State = GroupStatePreparingRebalance
member := &GroupMember{
ID: "member1",
ClientID: "client1",
SessionTimeout: 30000, // 30 seconds
RebalanceTimeout: 0, // Not set, should use default
State: MemberStatePending,
LastHeartbeat: time.Now(),
JoinedAt: time.Now().Add(-6 * time.Minute), // Joined 6 minutes ago
}
group.Members["member1"] = member
group.Mu.Unlock()
// Default rebalance timeout is 5 minutes (300000ms), so member should be evicted
rtm.CheckRebalanceTimeouts()
group.Mu.RLock()
if len(group.Members) != 0 {
t.Errorf("Expected member to be evicted using default rebalance timeout, but %d members remain", len(group.Members))
}
group.Mu.RUnlock()
}
|
