package consul import ( "fmt" "os" "strings" "testing" "time" "github.com/hashicorp/consul/agent/structs" "github.com/hashicorp/consul/sdk/testutil/retry" "github.com/hashicorp/consul/testrpc" "github.com/hashicorp/go-uuid" "github.com/hashicorp/net-rpc-msgpackrpc" ) func generateUUID() (ret string) { var err error if ret, err = uuid.GenerateUUID(); err != nil { panic(fmt.Sprintf("Unable to generate a UUID, %v", err)) } return ret } func TestInitializeSessionTimers(t *testing.T) { t.Parallel() dir1, s1 := testServer(t) defer os.RemoveAll(dir1) defer s1.Shutdown() testrpc.WaitForLeader(t, s1.RPC, "dc1") state := s1.fsm.State() if err := state.EnsureNode(1, &structs.Node{Node: "foo", Address: "127.0.0.1"}); err != nil { t.Fatalf("err: %s", err) } session := &structs.Session{ ID: generateUUID(), Node: "foo", TTL: "10s", } if err := state.SessionCreate(100, session); err != nil { t.Fatalf("err: %v", err) } // Reset the session timers err := s1.initializeSessionTimers() if err != nil { t.Fatalf("err: %v", err) } // Check that we have a timer if s1.sessionTimers.Get(session.ID) == nil { t.Fatalf("missing session timer") } } func TestResetSessionTimer_Fault(t *testing.T) { t.Parallel() dir1, s1 := testServer(t) defer os.RemoveAll(dir1) defer s1.Shutdown() testrpc.WaitForLeader(t, s1.RPC, "dc1") // Should not exist err := s1.resetSessionTimer(generateUUID(), nil) if err == nil || !strings.Contains(err.Error(), "not found") { t.Fatalf("err: %v", err) } // Create a session state := s1.fsm.State() if err := state.EnsureNode(1, &structs.Node{Node: "foo", Address: "127.0.0.1"}); err != nil { t.Fatalf("err: %s", err) } session := &structs.Session{ ID: generateUUID(), Node: "foo", TTL: "10s", } if err := state.SessionCreate(100, session); err != nil { t.Fatalf("err: %v", err) } // Reset the session timer err = s1.resetSessionTimer(session.ID, nil) if err != nil { t.Fatalf("err: %v", err) } // Check that we have a timer if s1.sessionTimers.Get(session.ID) == nil { t.Fatalf("missing session timer") } } func TestResetSessionTimer_NoTTL(t *testing.T) { t.Parallel() dir1, s1 := testServer(t) defer os.RemoveAll(dir1) defer s1.Shutdown() testrpc.WaitForLeader(t, s1.RPC, "dc1") // Create a session state := s1.fsm.State() if err := state.EnsureNode(1, &structs.Node{Node: "foo", Address: "127.0.0.1"}); err != nil { t.Fatalf("err: %s", err) } session := &structs.Session{ ID: generateUUID(), Node: "foo", TTL: "0000s", } if err := state.SessionCreate(100, session); err != nil { t.Fatalf("err: %v", err) } // Reset the session timer err := s1.resetSessionTimer(session.ID, session) if err != nil { t.Fatalf("err: %v", err) } // Check that we have a timer if s1.sessionTimers.Get(session.ID) != nil { t.Fatalf("should not have session timer") } } func TestResetSessionTimer_InvalidTTL(t *testing.T) { t.Parallel() dir1, s1 := testServer(t) defer os.RemoveAll(dir1) defer s1.Shutdown() // Create a session session := &structs.Session{ ID: generateUUID(), Node: "foo", TTL: "foo", } // Reset the session timer err := s1.resetSessionTimer(session.ID, session) if err == nil || !strings.Contains(err.Error(), "Invalid Session TTL") { t.Fatalf("err: %v", err) } } func TestResetSessionTimerLocked(t *testing.T) { t.Parallel() dir1, s1 := testServer(t) defer os.RemoveAll(dir1) defer s1.Shutdown() testrpc.WaitForLeader(t, s1.RPC, "dc1") s1.createSessionTimer("foo", 5*time.Millisecond) if s1.sessionTimers.Get("foo") == nil { t.Fatalf("missing timer") } retry.Run(t, func(r *retry.R) { if s1.sessionTimers.Get("foo") != nil { r.Fatal("timer should be gone") } }) } func TestResetSessionTimerLocked_Renew(t *testing.T) { t.Parallel() dir1, s1 := testServer(t) defer os.RemoveAll(dir1) defer s1.Shutdown() ttl := 100 * time.Millisecond // create the timer s1.createSessionTimer("foo", ttl) if s1.sessionTimers.Get("foo") == nil { t.Fatalf("missing timer") } // wait until it is "expired" but at this point // the session still exists. time.Sleep(ttl) if s1.sessionTimers.Get("foo") == nil { t.Fatal("missing timer") } // renew the session which will reset the TTL to 2*ttl // since that is the current SessionTTLMultiplier s1.createSessionTimer("foo", ttl) // Watch for invalidation renew := time.Now() deadline := renew.Add(2 * structs.SessionTTLMultiplier * ttl) for { now := time.Now() if now.After(deadline) { t.Fatal("should have expired by now") } // timer still exists if s1.sessionTimers.Get("foo") != nil { time.Sleep(time.Millisecond) continue } // timer gone if now.Sub(renew) < ttl { t.Fatalf("early invalidate") } break } } func TestInvalidateSession(t *testing.T) { t.Parallel() dir1, s1 := testServer(t) defer os.RemoveAll(dir1) defer s1.Shutdown() testrpc.WaitForLeader(t, s1.RPC, "dc1") // Create a session state := s1.fsm.State() if err := state.EnsureNode(1, &structs.Node{Node: "foo", Address: "127.0.0.1"}); err != nil { t.Fatalf("err: %s", err) } session := &structs.Session{ ID: generateUUID(), Node: "foo", TTL: "10s", } if err := state.SessionCreate(100, session); err != nil { t.Fatalf("err: %v", err) } // This should cause a destroy s1.invalidateSession(session.ID) // Check it is gone _, sess, err := state.SessionGet(nil, session.ID) if err != nil { t.Fatalf("err: %v", err) } if sess != nil { t.Fatalf("should destroy session") } } func TestClearSessionTimer(t *testing.T) { t.Parallel() dir1, s1 := testServer(t) defer os.RemoveAll(dir1) defer s1.Shutdown() s1.createSessionTimer("foo", 5*time.Millisecond) err := s1.clearSessionTimer("foo") if err != nil { t.Fatalf("err: %v", err) } if s1.sessionTimers.Get("foo") != nil { t.Fatalf("timer should be gone") } } func TestClearAllSessionTimers(t *testing.T) { t.Parallel() dir1, s1 := testServer(t) defer os.RemoveAll(dir1) defer s1.Shutdown() s1.createSessionTimer("foo", 10*time.Millisecond) s1.createSessionTimer("bar", 10*time.Millisecond) s1.createSessionTimer("baz", 10*time.Millisecond) err := s1.clearAllSessionTimers() if err != nil { t.Fatalf("err: %v", err) } // sessionTimers is guarded by the lock if s1.sessionTimers.Len() != 0 { t.Fatalf("timers should be gone") } } func TestServer_SessionTTL_Failover(t *testing.T) { t.Parallel() dir1, s1 := testServer(t) defer os.RemoveAll(dir1) defer s1.Shutdown() testrpc.WaitForTestAgent(t, s1.RPC, "dc1") dir2, s2 := testServerDCBootstrap(t, "dc1", false) defer os.RemoveAll(dir2) defer s2.Shutdown() dir3, s3 := testServerDCBootstrap(t, "dc1", false) defer os.RemoveAll(dir3) defer s3.Shutdown() servers := []*Server{s1, s2, s3} // Try to join joinLAN(t, s2, s1) joinLAN(t, s3, s1) retry.Run(t, func(r *retry.R) { r.Check(wantPeers(s1, 3)) }) // Find the leader var leader *Server for _, s := range servers { // Check that s.sessionTimers is empty if s.sessionTimers.Len() != 0 { t.Fatalf("should have no sessionTimers") } // Find the leader too if s.IsLeader() { leader = s } } if leader == nil { t.Fatalf("Should have a leader") } codec := rpcClient(t, leader) defer codec.Close() // Register a node node := structs.RegisterRequest{ Datacenter: s1.config.Datacenter, Node: "foo", Address: "127.0.0.1", } var out struct{} if err := s1.RPC("Catalog.Register", &node, &out); err != nil { t.Fatalf("err: %v", err) } // Create a TTL session arg := structs.SessionRequest{ Datacenter: "dc1", Op: structs.SessionCreate, Session: structs.Session{ Node: "foo", TTL: "10s", }, } var id1 string if err := msgpackrpc.CallWithCodec(codec, "Session.Apply", &arg, &id1); err != nil { t.Fatalf("err: %v", err) } // Check that sessionTimers has the session ID if leader.sessionTimers.Get(id1) == nil { t.Fatalf("missing session timer") } // Shutdown the leader! leader.Shutdown() // sessionTimers should be cleared on leader shutdown if leader.sessionTimers.Len() != 0 { t.Fatalf("session timers should be empty on the shutdown leader") } // Find the new leader retry.Run(t, func(r *retry.R) { leader = nil for _, s := range servers { if s.IsLeader() { leader = s } } if leader == nil { r.Fatal("Should have a new leader") } // Ensure session timer is restored if leader.sessionTimers.Get(id1) == nil { r.Fatal("missing session timer") } }) }