package consul import ( "os" "testing" "time" "github.com/stretchr/testify/require" "github.com/hashicorp/consul/agent/structs" "github.com/hashicorp/consul/agent/token" "github.com/hashicorp/consul/api" "github.com/hashicorp/consul/sdk/testutil/retry" "github.com/hashicorp/consul/testrpc" ) func TestLeader_FederationStateAntiEntropy_FeatureIsStickyEvenIfSerfTagsRegress(t *testing.T) { if testing.Short() { t.Skip("too slow for testing.Short") } t.Parallel() // We test this by having two datacenters with one server each. They // initially come up and pass the serf barrier, then we power them both // off. We leave the primary off permanently, and then we stand up the // secondary. Hopefully it should transition to allow federation states. dir1, s1 := testServerWithConfig(t, func(c *Config) { c.PrimaryDatacenter = "dc1" }) defer os.RemoveAll(dir1) defer s1.Shutdown() codec := rpcClient(t, s1) defer codec.Close() waitForLeaderEstablishment(t, s1) dir2, s2 := testServerWithConfig(t, func(c *Config) { c.Datacenter = "dc2" c.PrimaryDatacenter = "dc1" c.FederationStateReplicationRate = 100 c.FederationStateReplicationBurst = 100 c.FederationStateReplicationApplyLimit = 1000000 }) defer os.RemoveAll(dir2) defer s2.Shutdown() codec2 := rpcClient(t, s2) defer codec2.Close() waitForLeaderEstablishment(t, s2) // Create the WAN link joinWAN(t, s2, s1) waitForLeaderEstablishment(t, s1) waitForLeaderEstablishment(t, s2) waitForFederationStateFeature(t, s1) waitForFederationStateFeature(t, s2) // Wait for everybody's AE to complete. retry.Run(t, func(r *retry.R) { _, states, err := s1.fsm.State().FederationStateList(nil) require.NoError(r, err) require.Len(r, states, 2) }) // Shutdown s1 and s2. s1.Shutdown() s2.Shutdown() // Restart just s2 dir2new, s2new := testServerWithConfig(t, func(c *Config) { c.Datacenter = "dc2" c.PrimaryDatacenter = "dc1" c.FederationStateReplicationRate = 100 c.FederationStateReplicationBurst = 100 c.FederationStateReplicationApplyLimit = 1000000 c.DataDir = s2.config.DataDir c.NodeName = s2.config.NodeName c.NodeID = s2.config.NodeID }) defer os.RemoveAll(dir2new) defer s2new.Shutdown() waitForLeaderEstablishment(t, s2new) // It should be able to transition without connectivity to the primary. waitForFederationStateFeature(t, s2new) } func TestLeader_FederationStateAntiEntropy_BlockingQuery(t *testing.T) { if testing.Short() { t.Skip("too slow for testing.Short") } t.Parallel() dir1, s1 := testServerWithConfig(t, func(c *Config) { c.PrimaryDatacenter = "dc1" }) defer os.RemoveAll(dir1) defer s1.Shutdown() testrpc.WaitForLeader(t, s1.RPC, "dc1") dir2, s2 := testServerWithConfig(t, func(c *Config) { c.Datacenter = "dc2" c.PrimaryDatacenter = "dc1" c.FederationStateReplicationRate = 100 c.FederationStateReplicationBurst = 100 c.FederationStateReplicationApplyLimit = 1000000 c.DisableFederationStateAntiEntropy = true }) testrpc.WaitForLeader(t, s2.RPC, "dc2") defer os.RemoveAll(dir2) defer s2.Shutdown() // Try to join. joinWAN(t, s2, s1) testrpc.WaitForLeader(t, s1.RPC, "dc1") testrpc.WaitForLeader(t, s1.RPC, "dc2") checkSame := func(t *testing.T, expectN, expectGatewaysInDC2 int) { t.Helper() retry.Run(t, func(r *retry.R) { _, remote, err := s1.fsm.State().FederationStateList(nil) require.NoError(r, err) require.Len(r, remote, expectN) _, local, err := s2.fsm.State().FederationStateList(nil) require.NoError(r, err) require.Len(r, local, expectN) var fs2 *structs.FederationState for _, fs := range local { if fs.Datacenter == "dc2" { fs2 = fs break } } if expectGatewaysInDC2 < 0 { require.Nil(r, fs2) } else { require.NotNil(r, fs2) require.Len(r, fs2.MeshGateways, expectGatewaysInDC2) } }) } gatewayCSN1 := newTestMeshGatewayNode( "dc2", "gateway1", "1.2.3.4", 443, map[string]string{structs.MetaWANFederationKey: "1"}, api.HealthPassing, ) gatewayCSN2 := newTestMeshGatewayNode( "dc2", "gateway2", "4.3.2.1", 443, map[string]string{structs.MetaWANFederationKey: "1"}, api.HealthPassing, ) // populate with some stuff makeFedState := func(t *testing.T, dc string, csn ...structs.CheckServiceNode) { t.Helper() arg := structs.FederationStateRequest{ Datacenter: "dc1", Op: structs.FederationStateUpsert, State: &structs.FederationState{ Datacenter: dc, MeshGateways: csn, UpdatedAt: time.Now().UTC(), }, } out := false require.NoError(t, s1.RPC("FederationState.Apply", &arg, &out)) } makeGateways := func(t *testing.T, csn structs.CheckServiceNode) { t.Helper() const dc = "dc2" arg := structs.RegisterRequest{ Datacenter: csn.Node.Datacenter, Node: csn.Node.Node, Address: csn.Node.Address, Service: csn.Service, Checks: csn.Checks, } var out struct{} require.NoError(t, s2.RPC("Catalog.Register", &arg, &out)) } type result struct { idx uint64 prev, curr *structs.FederationState err error } blockAgain := func(last uint64) <-chan result { ch := make(chan result, 1) go func() { var res result res.idx, res.prev, res.curr, res.err = s2.fetchFederationStateAntiEntropyDetails(&structs.QueryOptions{ MinQueryIndex: last, RequireConsistent: true, }) ch <- res }() return ch } // wait for the primary to do one round of AE and replicate it checkSame(t, 1, -1) // // wait for change to be reflected as well // makeFedState(t, "dc2") // checkSame(t, 1) // Do the initial fetch (len0 local gateways, upstream has nil fedstate) res0 := <-blockAgain(0) require.NoError(t, res0.err) ch := blockAgain(res0.idx) // bump the local mesh gateways; should unblock query makeGateways(t, gatewayCSN1) res1 := <-ch require.NoError(t, res1.err) require.NotEqual(t, res1.idx, res0.idx) require.Nil(t, res1.prev) require.Len(t, res1.curr.MeshGateways, 1) checkSame(t, 1, -1) // no fed state update yet ch = blockAgain(res1.idx) // do manual AE makeFedState(t, "dc2", gatewayCSN1) res2 := <-ch require.NoError(t, res2.err) require.NotEqual(t, res2.idx, res1.idx) require.Len(t, res2.prev.MeshGateways, 1) require.Len(t, res2.curr.MeshGateways, 1) checkSame(t, 2, 1) ch = blockAgain(res2.idx) // add another local mesh gateway makeGateways(t, gatewayCSN2) res3 := <-ch require.NoError(t, res3.err) require.NotEqual(t, res3.idx, res2.idx) require.Len(t, res3.prev.MeshGateways, 1) require.Len(t, res3.curr.MeshGateways, 2) checkSame(t, 2, 1) ch = blockAgain(res3.idx) // do manual AE makeFedState(t, "dc2", gatewayCSN1, gatewayCSN2) res4 := <-ch require.NoError(t, res4.err) require.NotEqual(t, res4.idx, res3.idx) require.Len(t, res4.prev.MeshGateways, 2) require.Len(t, res4.curr.MeshGateways, 2) checkSame(t, 2, 2) } func TestLeader_FederationStateAntiEntropyPruning(t *testing.T) { if testing.Short() { t.Skip("too slow for testing.Short") } t.Parallel() dir1, s1 := testServerWithConfig(t, func(c *Config) { c.PrimaryDatacenter = "dc1" }) defer os.RemoveAll(dir1) defer s1.Shutdown() testrpc.WaitForLeader(t, s1.RPC, "dc1") client := rpcClient(t, s1) defer client.Close() dir2, s2 := testServerWithConfig(t, func(c *Config) { c.Datacenter = "dc2" c.PrimaryDatacenter = "dc1" }) testrpc.WaitForLeader(t, s2.RPC, "dc2") defer os.RemoveAll(dir2) defer s2.Shutdown() // Try to join. joinWAN(t, s2, s1) testrpc.WaitForLeader(t, s1.RPC, "dc1") testrpc.WaitForLeader(t, s1.RPC, "dc2") checkSame := func(r *retry.R) error { _, remote, err := s1.fsm.State().FederationStateList(nil) require.NoError(r, err) _, local, err := s2.fsm.State().FederationStateList(nil) require.NoError(r, err) require.Len(r, remote, 2) require.Len(r, local, 2) for i := range remote { // zero out the raft data for future comparisons remote[i].RaftIndex = structs.RaftIndex{} local[i].RaftIndex = structs.RaftIndex{} require.Equal(r, remote[i], local[i]) } return nil } // Wait for the replica to converge. retry.Run(t, func(r *retry.R) { checkSame(r) }) // Now leave and shutdown dc2. require.NoError(t, s2.Leave()) require.NoError(t, s2.Shutdown()) // Wait until we know the router is updated. retry.Run(t, func(r *retry.R) { dcs := s1.router.GetDatacenters() require.Len(r, dcs, 1) require.Equal(r, "dc1", dcs[0]) }) // Since the background routine is going to run every hour, it likely is // not going to run during this test, so it's safe to directly invoke the // core method. require.NoError(t, s1.pruneStaleFederationStates()) // Wait for dc2 to drop out. retry.Run(t, func(r *retry.R) { _, mine, err := s1.fsm.State().FederationStateList(nil) require.NoError(r, err) require.Len(r, mine, 1) require.Equal(r, "dc1", mine[0].Datacenter) }) } func TestLeader_FederationStateAntiEntropyPruning_ACLDeny(t *testing.T) { if testing.Short() { t.Skip("too slow for testing.Short") } t.Parallel() dir1, s1 := testServerWithConfig(t, func(c *Config) { c.PrimaryDatacenter = "dc1" c.PrimaryDatacenter = "dc1" c.ACLsEnabled = true c.ACLMasterToken = "root" c.ACLResolverSettings.ACLDefaultPolicy = "deny" }) defer os.RemoveAll(dir1) defer s1.Shutdown() testrpc.WaitForLeader(t, s1.RPC, "dc1") client := rpcClient(t, s1) defer client.Close() dir2, s2 := testServerWithConfig(t, func(c *Config) { c.Datacenter = "dc2" c.PrimaryDatacenter = "dc1" c.PrimaryDatacenter = "dc1" c.ACLsEnabled = true c.ACLMasterToken = "root" c.ACLResolverSettings.ACLDefaultPolicy = "deny" }) defer os.RemoveAll(dir2) defer s2.Shutdown() // Try to join. joinWAN(t, s2, s1) testrpc.WaitForLeader(t, s1.RPC, "dc1") testrpc.WaitForLeader(t, s1.RPC, "dc2", testrpc.WithToken("root")) // Create the ACL token. opWriteToken, err := upsertTestTokenWithPolicyRules(client, "root", "dc1", `operator = "write"`) require.NoError(t, err) require.True(t, s1.tokens.UpdateReplicationToken(opWriteToken.SecretID, token.TokenSourceAPI)) require.True(t, s2.tokens.UpdateReplicationToken(opWriteToken.SecretID, token.TokenSourceAPI)) checkSame := func(r *retry.R) error { _, remote, err := s1.fsm.State().FederationStateList(nil) require.NoError(r, err) _, local, err := s2.fsm.State().FederationStateList(nil) require.NoError(r, err) require.Len(r, remote, 2) require.Len(r, local, 2) for i := range remote { // zero out the raft data for future comparisons remote[i].RaftIndex = structs.RaftIndex{} local[i].RaftIndex = structs.RaftIndex{} require.Equal(r, remote[i], local[i]) } return nil } // Wait for the replica to converge. retry.Run(t, func(r *retry.R) { checkSame(r) }) // Now leave and shutdown dc2. require.NoError(t, s2.Leave()) require.NoError(t, s2.Shutdown()) // Wait until we know the router is updated. retry.Run(t, func(r *retry.R) { dcs := s1.router.GetDatacenters() require.Len(r, dcs, 1) require.Equal(r, "dc1", dcs[0]) }) // Since the background routine is going to run every hour, it likely is // not going to run during this test, so it's safe to directly invoke the // core method. require.NoError(t, s1.pruneStaleFederationStates()) // Wait for dc2 to drop out. retry.Run(t, func(r *retry.R) { _, mine, err := s1.fsm.State().FederationStateList(nil) require.NoError(r, err) require.Len(r, mine, 1) require.Equal(r, "dc1", mine[0].Datacenter) }) }