package consul import ( "bytes" "context" "fmt" "os" "reflect" "sort" "strconv" "strings" "testing" "time" "github.com/hashicorp/consul/agent/structs" tokenStore "github.com/hashicorp/consul/agent/token" "github.com/hashicorp/consul/sdk/testutil/retry" "github.com/hashicorp/consul/testrpc" ) func TestACLReplication_Sorter(t *testing.T) { t.Parallel() acls := structs.ACLs{ &structs.ACL{ID: "a"}, &structs.ACL{ID: "b"}, &structs.ACL{ID: "c"}, } sorter := &aclIterator{acls, 0} if len := sorter.Len(); len != 3 { t.Fatalf("bad: %d", len) } if !sorter.Less(0, 1) { t.Fatalf("should be less") } if sorter.Less(1, 0) { t.Fatalf("should not be less") } if !sort.IsSorted(sorter) { t.Fatalf("should be sorted") } expected := structs.ACLs{ &structs.ACL{ID: "b"}, &structs.ACL{ID: "a"}, &structs.ACL{ID: "c"}, } sorter.Swap(0, 1) if !reflect.DeepEqual(acls, expected) { t.Fatalf("bad: %v", acls) } if sort.IsSorted(sorter) { t.Fatalf("should not be sorted") } sort.Sort(sorter) if !sort.IsSorted(sorter) { t.Fatalf("should be sorted") } } func TestACLReplication_Iterator(t *testing.T) { t.Parallel() acls := structs.ACLs{} iter := newACLIterator(acls) if front := iter.Front(); front != nil { t.Fatalf("bad: %v", front) } iter.Next() if front := iter.Front(); front != nil { t.Fatalf("bad: %v", front) } acls = structs.ACLs{ &structs.ACL{ID: "a"}, &structs.ACL{ID: "b"}, &structs.ACL{ID: "c"}, } iter = newACLIterator(acls) if front := iter.Front(); front != acls[0] { t.Fatalf("bad: %v", front) } iter.Next() if front := iter.Front(); front != acls[1] { t.Fatalf("bad: %v", front) } iter.Next() if front := iter.Front(); front != acls[2] { t.Fatalf("bad: %v", front) } iter.Next() if front := iter.Front(); front != nil { t.Fatalf("bad: %v", front) } } func TestACLReplication_reconcileACLs(t *testing.T) { t.Parallel() parseACLs := func(raw string) structs.ACLs { var acls structs.ACLs for _, key := range strings.Split(raw, "|") { if len(key) == 0 { continue } tuple := strings.Split(key, ":") index, err := strconv.Atoi(tuple[1]) if err != nil { t.Fatalf("err: %v", err) } acl := &structs.ACL{ ID: tuple[0], Rules: tuple[2], RaftIndex: structs.RaftIndex{ ModifyIndex: uint64(index), }, } acls = append(acls, acl) } return acls } parseChanges := func(changes structs.ACLRequests) string { var ret string for i, change := range changes { if i > 0 { ret += "|" } ret += fmt.Sprintf("%s:%s:%s", change.Op, change.ACL.ID, change.ACL.Rules) } return ret } tests := []struct { local string remote string lastRemoteIndex uint64 expected string }{ // Everything empty. { local: "", remote: "", lastRemoteIndex: 0, expected: "", }, // First time with empty local. { local: "", remote: "bbb:3:X|ccc:9:X|ddd:2:X|eee:11:X", lastRemoteIndex: 0, expected: "set:bbb:X|set:ccc:X|set:ddd:X|set:eee:X", }, // Remote not sorted. { local: "", remote: "ddd:2:X|bbb:3:X|ccc:9:X|eee:11:X", lastRemoteIndex: 0, expected: "set:bbb:X|set:ccc:X|set:ddd:X|set:eee:X", }, // Neither side sorted. { local: "ddd:2:X|bbb:3:X|ccc:9:X|eee:11:X", remote: "ccc:9:X|bbb:3:X|ddd:2:X|eee:11:X", lastRemoteIndex: 0, expected: "", }, // Fully replicated, nothing to do. { local: "bbb:3:X|ccc:9:X|ddd:2:X|eee:11:X", remote: "bbb:3:X|ccc:9:X|ddd:2:X|eee:11:X", lastRemoteIndex: 0, expected: "", }, // Change an ACL. { local: "bbb:3:X|ccc:9:X|ddd:2:X|eee:11:X", remote: "bbb:3:X|ccc:33:Y|ddd:2:X|eee:11:X", lastRemoteIndex: 0, expected: "set:ccc:Y", }, // Change an ACL, but mask the change by the last replicated // index. This isn't how things work normally, but it proves // we are skipping the full compare based on the index. { local: "bbb:3:X|ccc:9:X|ddd:2:X|eee:11:X", remote: "bbb:3:X|ccc:33:Y|ddd:2:X|eee:11:X", lastRemoteIndex: 33, expected: "", }, // Empty everything out. { local: "bbb:3:X|ccc:9:X|ddd:2:X|eee:11:X", remote: "", lastRemoteIndex: 0, expected: "delete:bbb:X|delete:ccc:X|delete:ddd:X|delete:eee:X", }, // Adds on the ends and in the middle. { local: "bbb:3:X|ccc:9:X|ddd:2:X|eee:11:X", remote: "aaa:99:X|bbb:3:X|ccc:9:X|ccx:101:X|ddd:2:X|eee:11:X|fff:102:X", lastRemoteIndex: 0, expected: "set:aaa:X|set:ccx:X|set:fff:X", }, // Deletes on the ends and in the middle. { local: "bbb:3:X|ccc:9:X|ddd:2:X|eee:11:X", remote: "ccc:9:X", lastRemoteIndex: 0, expected: "delete:bbb:X|delete:ddd:X|delete:eee:X", }, // Everything. { local: "bbb:3:X|ccc:9:X|ddd:2:X|eee:11:X", remote: "aaa:99:X|bbb:3:X|ccx:101:X|ddd:103:Y|eee:11:X|fff:102:X", lastRemoteIndex: 11, expected: "set:aaa:X|delete:ccc:X|set:ccx:X|set:ddd:Y|set:fff:X", }, } for i, test := range tests { local, remote := parseACLs(test.local), parseACLs(test.remote) changes := reconcileLegacyACLs(local, remote, test.lastRemoteIndex) if actual := parseChanges(changes); actual != test.expected { t.Errorf("test case %d failed: %s", i, actual) } } } func TestACLReplication_updateLocalACLs_RateLimit(t *testing.T) { t.Parallel() dir1, s1 := testServerWithConfig(t, func(c *Config) { c.Datacenter = "dc2" c.ACLDatacenter = "dc1" c.ACLsEnabled = true c.ACLReplicationApplyLimit = 1 }) s1.tokens.UpdateReplicationToken("secret", tokenStore.TokenSourceConfig) defer os.RemoveAll(dir1) defer s1.Shutdown() testrpc.WaitForLeader(t, s1.RPC, "dc2") changes := structs.ACLRequests{ &structs.ACLRequest{ Op: structs.ACLSet, ACL: structs.ACL{ ID: "secret", Type: "client", }, }, } // Should be throttled to 1 Hz. start := time.Now() if _, err := s1.updateLocalLegacyACLs(changes, context.Background()); err != nil { t.Fatalf("err: %v", err) } if dur := time.Since(start); dur < time.Second { t.Fatalf("too slow: %9.6f", dur.Seconds()) } changes = append(changes, &structs.ACLRequest{ Op: structs.ACLSet, ACL: structs.ACL{ ID: "secret", Type: "client", }, }) // Should be throttled to 1 Hz. start = time.Now() if _, err := s1.updateLocalLegacyACLs(changes, context.Background()); err != nil { t.Fatalf("err: %v", err) } if dur := time.Since(start); dur < 2*time.Second { t.Fatalf("too fast: %9.6f", dur.Seconds()) } } func TestACLReplication_IsACLReplicationEnabled(t *testing.T) { t.Parallel() // ACLs not enabled. dir1, s1 := testServerWithConfig(t, func(c *Config) { c.ACLDatacenter = "" c.ACLsEnabled = false }) defer os.RemoveAll(dir1) defer s1.Shutdown() if s1.IsACLReplicationEnabled() { t.Fatalf("should not be enabled") } // ACLs enabled but not replication. dir2, s2 := testServerWithConfig(t, func(c *Config) { c.Datacenter = "dc2" c.ACLDatacenter = "dc1" c.ACLsEnabled = true }) defer os.RemoveAll(dir2) defer s2.Shutdown() testrpc.WaitForLeader(t, s1.RPC, "dc1") testrpc.WaitForLeader(t, s2.RPC, "dc2") if s2.IsACLReplicationEnabled() { t.Fatalf("should not be enabled") } // ACLs enabled with replication. dir3, s3 := testServerWithConfig(t, func(c *Config) { c.Datacenter = "dc2" c.ACLDatacenter = "dc1" c.ACLsEnabled = true c.ACLTokenReplication = true }) defer os.RemoveAll(dir3) defer s3.Shutdown() testrpc.WaitForLeader(t, s3.RPC, "dc2") if !s3.IsACLReplicationEnabled() { t.Fatalf("should be enabled") } // ACLs enabled with replication, but inside the ACL datacenter // so replication should be disabled. dir4, s4 := testServerWithConfig(t, func(c *Config) { c.Datacenter = "dc1" c.ACLDatacenter = "dc1" c.ACLsEnabled = true c.ACLTokenReplication = true }) defer os.RemoveAll(dir4) defer s4.Shutdown() testrpc.WaitForLeader(t, s4.RPC, "dc1") if s4.IsACLReplicationEnabled() { t.Fatalf("should not be enabled") } } // Note that this test is testing that legacy token data is replicated, NOT // directly testing the legacy acl replication goroutine code. // // Actually testing legacy replication is difficult to do without old binaries. func TestACLReplication_LegacyTokens(t *testing.T) { t.Parallel() dir1, s1 := testServerWithConfig(t, func(c *Config) { c.ACLDatacenter = "dc1" c.ACLsEnabled = true c.ACLMasterToken = "root" }) 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.ACLDatacenter = "dc1" c.ACLsEnabled = true c.ACLTokenReplication = true c.ACLReplicationRate = 100 c.ACLReplicationBurst = 100 c.ACLReplicationApplyLimit = 1000000 }) s2.tokens.UpdateReplicationToken("root", tokenStore.TokenSourceConfig) 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") // Wait for legacy acls to be disabled so we are clear that // legacy replication isn't meddling. waitForNewACLs(t, s1) waitForNewACLs(t, s2) waitForNewACLReplication(t, s2, structs.ACLReplicateTokens, 1, 1, 0) // Create a bunch of new tokens. var id string for i := 0; i < 50; i++ { arg := structs.ACLRequest{ Datacenter: "dc1", Op: structs.ACLSet, ACL: structs.ACL{ Name: "User token", Type: structs.ACLTokenTypeClient, Rules: testACLPolicy, }, WriteRequest: structs.WriteRequest{Token: "root"}, } if err := s1.RPC("ACL.Apply", &arg, &id); err != nil { t.Fatalf("err: %v", err) } } checkSame := func() error { index, remote, err := s1.fsm.State().ACLTokenList(nil, true, true, "", "", "", nil) if err != nil { return err } _, local, err := s2.fsm.State().ACLTokenList(nil, true, true, "", "", "", nil) if err != nil { return err } if got, want := len(remote), len(local); got != want { return fmt.Errorf("got %d remote ACLs want %d", got, want) } for i, token := range remote { if !bytes.Equal(token.Hash, local[i].Hash) { return fmt.Errorf("ACLs differ") } } var status structs.ACLReplicationStatus s2.aclReplicationStatusLock.RLock() status = s2.aclReplicationStatus s2.aclReplicationStatusLock.RUnlock() if !status.Enabled || !status.Running || status.ReplicatedTokenIndex != index || status.SourceDatacenter != "dc1" { return fmt.Errorf("ACL replication status differs") } return nil } // Wait for the replica to converge. retry.Run(t, func(r *retry.R) { if err := checkSame(); err != nil { r.Fatal(err) } }) // Create more new tokens. for i := 0; i < 50; i++ { arg := structs.ACLRequest{ Datacenter: "dc1", Op: structs.ACLSet, ACL: structs.ACL{ Name: "User token", Type: structs.ACLTokenTypeClient, Rules: testACLPolicy, }, WriteRequest: structs.WriteRequest{Token: "root"}, } var dontCare string if err := s1.RPC("ACL.Apply", &arg, &dontCare); err != nil { t.Fatalf("err: %v", err) } } // Wait for the replica to converge. retry.Run(t, func(r *retry.R) { if err := checkSame(); err != nil { r.Fatal(err) } }) // Delete a token. arg := structs.ACLRequest{ Datacenter: "dc1", Op: structs.ACLDelete, ACL: structs.ACL{ ID: id, }, WriteRequest: structs.WriteRequest{Token: "root"}, } var dontCare string if err := s1.RPC("ACL.Apply", &arg, &dontCare); err != nil { t.Fatalf("err: %v", err) } // Wait for the replica to converge. retry.Run(t, func(r *retry.R) { if err := checkSame(); err != nil { r.Fatal(err) } }) }