package consul import ( "errors" "fmt" "net" "regexp" "testing" "github.com/hashicorp/consul/agent/structs" "github.com/hashicorp/go-version" "github.com/hashicorp/serf/serf" "github.com/stretchr/testify/require" ) func TestGetPrivateIP(t *testing.T) { t.Parallel() ip, _, err := net.ParseCIDR("10.1.2.3/32") if err != nil { t.Fatalf("failed to parse private cidr: %v", err) } pubIP, _, err := net.ParseCIDR("8.8.8.8/32") if err != nil { t.Fatalf("failed to parse public cidr: %v", err) } tests := []struct { addrs []net.Addr expected net.IP err error }{ { addrs: []net.Addr{ &net.IPAddr{ IP: ip, }, &net.IPAddr{ IP: pubIP, }, }, expected: ip, }, { addrs: []net.Addr{ &net.IPAddr{ IP: pubIP, }, }, err: errors.New("No private IP address found"), }, { addrs: []net.Addr{ &net.IPAddr{ IP: ip, }, &net.IPAddr{ IP: ip, }, &net.IPAddr{ IP: pubIP, }, }, err: errors.New("Multiple private IPs found. Please configure one."), }, } for _, test := range tests { ip, err := getPrivateIP(test.addrs) switch { case test.err != nil && err != nil: if err.Error() != test.err.Error() { t.Fatalf("unexpected error: %v != %v", test.err, err) } case (test.err == nil && err != nil) || (test.err != nil && err == nil): t.Fatalf("unexpected error: %v != %v", test.err, err) default: if !test.expected.Equal(ip) { t.Fatalf("unexpected ip: %v != %v", ip, test.expected) } } } } func TestIsPrivateIP(t *testing.T) { t.Parallel() if !isPrivateIP("192.168.1.1") { t.Fatalf("bad") } if !isPrivateIP("172.16.45.100") { t.Fatalf("bad") } if !isPrivateIP("10.1.2.3") { t.Fatalf("bad") } if !isPrivateIP("100.115.110.19") { t.Fatalf("bad") } if isPrivateIP("8.8.8.8") { t.Fatalf("bad") } if !isPrivateIP("127.0.0.1") { t.Fatalf("bad") } } func TestUtil_CanServersUnderstandProtocol(t *testing.T) { t.Parallel() var members []serf.Member // All empty list cases should return false. for v := ProtocolVersionMin; v <= ProtocolVersionMax; v++ { grok, err := CanServersUnderstandProtocol(members, v) if err != nil { t.Fatalf("err: %v", err) } if grok { t.Fatalf("empty list should always return false") } } // Add a non-server member. members = append(members, serf.Member{ Tags: map[string]string{ "vsn_min": fmt.Sprintf("%d", ProtocolVersionMin), "vsn_max": fmt.Sprintf("%d", ProtocolVersionMax), }, }) // Make sure it doesn't get counted. for v := ProtocolVersionMin; v <= ProtocolVersionMax; v++ { grok, err := CanServersUnderstandProtocol(members, v) if err != nil { t.Fatalf("err: %v", err) } if grok { t.Fatalf("non-server members should not be counted") } } // Add a server member. members = append(members, serf.Member{ Tags: map[string]string{ "role": "consul", "vsn_min": fmt.Sprintf("%d", ProtocolVersionMin), "vsn_max": fmt.Sprintf("%d", ProtocolVersionMax), }, }) // Now it should report that it understands. for v := ProtocolVersionMin; v <= ProtocolVersionMax; v++ { grok, err := CanServersUnderstandProtocol(members, v) if err != nil { t.Fatalf("err: %v", err) } if !grok { t.Fatalf("server should grok") } } // Nobody should understand anything from the future. for v := uint8(ProtocolVersionMax + 1); v <= uint8(ProtocolVersionMax+10); v++ { grok, err := CanServersUnderstandProtocol(members, v) if err != nil { t.Fatalf("err: %v", err) } if grok { t.Fatalf("server should not grok") } } // Add an older server. members = append(members, serf.Member{ Tags: map[string]string{ "role": "consul", "vsn_min": fmt.Sprintf("%d", ProtocolVersionMin), "vsn_max": fmt.Sprintf("%d", ProtocolVersionMax-1), }, }) // The servers should no longer understand the max version. for v := ProtocolVersionMin; v <= ProtocolVersionMax; v++ { grok, err := CanServersUnderstandProtocol(members, v) if err != nil { t.Fatalf("err: %v", err) } expected := v < ProtocolVersionMax if grok != expected { t.Fatalf("bad: %v != %v", grok, expected) } } // Try a version that's too low for the minimum. { grok, err := CanServersUnderstandProtocol(members, 0) if err != nil { t.Fatalf("err: %v", err) } if grok { t.Fatalf("server should not grok") } } } func TestIsConsulNode(t *testing.T) { t.Parallel() m := serf.Member{ Tags: map[string]string{ "role": "node", "dc": "east-aws", }, } valid, dc := isConsulNode(m) if !valid || dc != "east-aws" { t.Fatalf("bad: %v %v", valid, dc) } } func TestByteConversion(t *testing.T) { t.Parallel() var val uint64 = 2 << 50 raw := uint64ToBytes(val) if bytesToUint64(raw) != val { t.Fatalf("no match") } } func TestGenerateUUID(t *testing.T) { t.Parallel() prev := generateUUID() for i := 0; i < 100; i++ { id := generateUUID() if prev == id { t.Fatalf("Should get a new ID!") } matched, err := regexp.MatchString( "[\\da-f]{8}-[\\da-f]{4}-[\\da-f]{4}-[\\da-f]{4}-[\\da-f]{12}", id) if !matched || err != nil { t.Fatalf("expected match %s %v %s", id, matched, err) } } } func TestGetPublicIPv6(t *testing.T) { t.Parallel() ip, _, err := net.ParseCIDR("fe80::1/128") if err != nil { t.Fatalf("failed to parse link-local cidr: %v", err) } ip2, _, err := net.ParseCIDR("::1/128") if err != nil { t.Fatalf("failed to parse loopback cidr: %v", err) } ip3, _, err := net.ParseCIDR("fc00::1/128") if err != nil { t.Fatalf("failed to parse ULA cidr: %v", err) } pubIP, _, err := net.ParseCIDR("2001:0db8:85a3::8a2e:0370:7334/128") if err != nil { t.Fatalf("failed to parse public cidr: %v", err) } tests := []struct { addrs []net.Addr expected net.IP err error }{ { addrs: []net.Addr{ &net.IPAddr{ IP: ip, }, &net.IPAddr{ IP: ip2, }, &net.IPAddr{ IP: ip3, }, &net.IPAddr{ IP: pubIP, }, }, expected: pubIP, }, { addrs: []net.Addr{ &net.IPAddr{ IP: ip, }, &net.IPAddr{ IP: ip2, }, &net.IPAddr{ IP: ip3, }, }, err: errors.New("No public IPv6 address found"), }, { addrs: []net.Addr{ &net.IPAddr{ IP: ip, }, &net.IPAddr{ IP: ip, }, &net.IPAddr{ IP: pubIP, }, &net.IPAddr{ IP: pubIP, }, }, err: errors.New("Multiple public IPv6 addresses found. Please configure one."), }, } for _, test := range tests { ip, err := getPublicIPv6(test.addrs) switch { case test.err != nil && err != nil: if err.Error() != test.err.Error() { t.Fatalf("unexpected error: %v != %v", test.err, err) } case (test.err == nil && err != nil) || (test.err != nil && err == nil): t.Fatalf("unexpected error: %v != %v", test.err, err) default: if !test.expected.Equal(ip) { t.Fatalf("unexpected ip: %v != %v", ip, test.expected) } } } } func TestServersMeetMinimumVersion(t *testing.T) { t.Parallel() makeMember := func(version string) serf.Member { return serf.Member{ Name: "foo", Addr: net.IP([]byte{127, 0, 0, 1}), Tags: map[string]string{ "role": "consul", "id": "asdf", "dc": "east-aws", "port": "10000", "build": version, "wan_join_port": "1234", "vsn": "1", "expect": "3", "raft_vsn": "3", }, Status: serf.StatusAlive, } } cases := []struct { members []serf.Member ver *version.Version expected bool }{ // One server, meets reqs { members: []serf.Member{ makeMember("0.7.5"), }, ver: version.Must(version.NewVersion("0.7.5")), expected: true, }, // One server, doesn't meet reqs { members: []serf.Member{ makeMember("0.7.5"), }, ver: version.Must(version.NewVersion("0.8.0")), expected: false, }, // Multiple servers, meets req version { members: []serf.Member{ makeMember("0.7.5"), makeMember("0.8.0"), }, ver: version.Must(version.NewVersion("0.7.5")), expected: true, }, // Multiple servers, doesn't meet req version { members: []serf.Member{ makeMember("0.7.5"), makeMember("0.8.0"), }, ver: version.Must(version.NewVersion("0.8.0")), expected: false, }, } for _, tc := range cases { result := ServersMeetMinimumVersion(tc.members, tc.ver) if result != tc.expected { t.Fatalf("bad: %v, %v, %v", result, tc.ver.String(), tc) } } } func TestServersInDCMeetMinimumVersion(t *testing.T) { t.Parallel() makeMember := func(version string, datacenter string) serf.Member { return serf.Member{ Name: "foo", Addr: net.IP([]byte{127, 0, 0, 1}), Tags: map[string]string{ "role": "consul", "id": "asdf", "dc": datacenter, "port": "10000", "build": version, "wan_join_port": "1234", "vsn": "1", "expect": "3", "raft_vsn": "3", }, Status: serf.StatusAlive, } } cases := []struct { members []serf.Member ver *version.Version expected bool expectedFound bool }{ // One server, meets reqs { members: []serf.Member{ makeMember("0.7.5", "primary"), makeMember("0.7.3", "secondary"), }, ver: version.Must(version.NewVersion("0.7.5")), expected: true, expectedFound: true, }, // One server, doesn't meet reqs { members: []serf.Member{ makeMember("0.7.5", "primary"), makeMember("0.8.1", "secondary"), }, ver: version.Must(version.NewVersion("0.8.0")), expected: false, expectedFound: true, }, // Multiple servers, meets req version { members: []serf.Member{ makeMember("0.7.5", "primary"), makeMember("0.8.0", "primary"), makeMember("0.7.0", "secondary"), }, ver: version.Must(version.NewVersion("0.7.5")), expected: true, expectedFound: true, }, // Multiple servers, doesn't meet req version { members: []serf.Member{ makeMember("0.7.5", "primary"), makeMember("0.8.0", "primary"), makeMember("0.9.1", "secondary"), }, ver: version.Must(version.NewVersion("0.8.0")), expected: false, expectedFound: true, }, { members: []serf.Member{ makeMember("0.7.5", "secondary"), makeMember("0.8.0", "secondary"), makeMember("0.9.1", "secondary"), }, ver: version.Must(version.NewVersion("0.7.0")), expected: true, expectedFound: false, }, } for _, tc := range cases { result, found := ServersInDCMeetMinimumVersion(tc.members, "primary", tc.ver) require.Equal(t, tc.expected, result) require.Equal(t, tc.expectedFound, found) } } func TestInterpolateHIL(t *testing.T) { for _, test := range []struct { name string in string vars map[string]string exp string ok bool }{ // valid HIL { "empty", "", map[string]string{}, "", true, }, { "no vars", "nothing", map[string]string{}, "nothing", true, }, { "just var", "${item}", map[string]string{"item": "value"}, "value", true, }, { "var in middle", "before ${item}after", map[string]string{"item": "value"}, "before valueafter", true, }, { "two vars", "before ${item}after ${more}", map[string]string{"item": "value", "more": "xyz"}, "before valueafter xyz", true, }, { "missing map val", "${item}", map[string]string{"item": ""}, "", true, }, // "weird" HIL, but not technically invalid { "just end", "}", map[string]string{}, "}", true, }, { "var without start", " item }", map[string]string{"item": "value"}, " item }", true, }, { "two vars missing second start", "before ${ item }after more }", map[string]string{"item": "value", "more": "xyz"}, "before valueafter more }", true, }, // invalid HIL { "just start", "${", map[string]string{}, "", false, }, { "backwards", "}${", map[string]string{}, "", false, }, { "no varname", "${}", map[string]string{}, "", false, }, { "missing map key", "${item}", map[string]string{}, "", false, }, { "var without end", "${ item ", map[string]string{"item": "value"}, "", false, }, { "two vars missing first end", "before ${ item after ${ more }", map[string]string{"item": "value", "more": "xyz"}, "", false, }, } { t.Run(test.name, func(t *testing.T) { out, err := InterpolateHIL(test.in, test.vars) if test.ok { require.NoError(t, err) require.Equal(t, test.exp, out) } else { require.NotNil(t, err) require.Equal(t, out, "") } }) } } func TestServersGetACLMode(t *testing.T) { t.Parallel() makeMember := func(role string, datacenter string, acls structs.ACLMode, status serf.MemberStatus, addr net.IP) serf.Member { return serf.Member{ Name: "foo", Addr: addr, Tags: map[string]string{ "role": role, "id": "asdf", "dc": datacenter, "port": "10000", "build": "1.6.0", "wan_join_port": "1234", "vsn": "1", "expect": "3", "raft_vsn": "3", "acls": string(acls), }, Status: status, } } type tcase struct { members []serf.Member leaderAddr string datacenter string numServers int minMode structs.ACLMode leaderMode structs.ACLMode } cases := map[string]tcase{ "filter-members": tcase{ members: []serf.Member{ makeMember("consul", "primary", structs.ACLModeLegacy, serf.StatusAlive, net.IP([]byte{127, 0, 0, 1})), makeMember("consul", "primary", structs.ACLModeLegacy, serf.StatusFailed, net.IP([]byte{127, 0, 0, 2})), // filter non-server makeMember("client", "primary", structs.ACLModeUnknown, serf.StatusAlive, net.IP([]byte{127, 0, 0, 3})), // filtered datacenter makeMember("consul", "secondary", structs.ACLModeUnknown, serf.StatusAlive, net.IP([]byte{127, 0, 0, 4})), // filtered status makeMember("consul", "primary", structs.ACLModeUnknown, serf.StatusLeaving, net.IP([]byte{127, 0, 0, 5})), // filtered status makeMember("consul", "primary", structs.ACLModeUnknown, serf.StatusLeft, net.IP([]byte{127, 0, 0, 6})), // filtered status makeMember("consul", "primary", structs.ACLModeUnknown, serf.StatusNone, net.IP([]byte{127, 0, 0, 7})), }, numServers: 2, leaderAddr: "127.0.0.1:10000", datacenter: "primary", minMode: structs.ACLModeLegacy, leaderMode: structs.ACLModeLegacy, }, "disabled": tcase{ members: []serf.Member{ makeMember("consul", "primary", structs.ACLModeLegacy, serf.StatusAlive, net.IP([]byte{127, 0, 0, 1})), makeMember("consul", "primary", structs.ACLModeUnknown, serf.StatusAlive, net.IP([]byte{127, 0, 0, 2})), makeMember("consul", "primary", structs.ACLModeDisabled, serf.StatusAlive, net.IP([]byte{127, 0, 0, 3})), }, numServers: 3, leaderAddr: "127.0.0.1:10000", datacenter: "", minMode: structs.ACLModeDisabled, leaderMode: structs.ACLModeLegacy, }, "unknown": tcase{ members: []serf.Member{ makeMember("consul", "primary", structs.ACLModeLegacy, serf.StatusAlive, net.IP([]byte{127, 0, 0, 1})), makeMember("consul", "primary", structs.ACLModeUnknown, serf.StatusAlive, net.IP([]byte{127, 0, 0, 2})), }, numServers: 2, leaderAddr: "127.0.0.1:10000", datacenter: "", minMode: structs.ACLModeUnknown, leaderMode: structs.ACLModeLegacy, }, "legacy": tcase{ members: []serf.Member{ makeMember("consul", "primary", structs.ACLModeEnabled, serf.StatusAlive, net.IP([]byte{127, 0, 0, 1})), makeMember("consul", "primary", structs.ACLModeLegacy, serf.StatusAlive, net.IP([]byte{127, 0, 0, 2})), }, numServers: 2, leaderAddr: "127.0.0.1:10000", datacenter: "", minMode: structs.ACLModeLegacy, leaderMode: structs.ACLModeEnabled, }, "enabled": tcase{ members: []serf.Member{ makeMember("consul", "primary", structs.ACLModeEnabled, serf.StatusAlive, net.IP([]byte{127, 0, 0, 1})), makeMember("consul", "primary", structs.ACLModeEnabled, serf.StatusAlive, net.IP([]byte{127, 0, 0, 2})), makeMember("consul", "primary", structs.ACLModeEnabled, serf.StatusAlive, net.IP([]byte{127, 0, 0, 3})), }, numServers: 3, leaderAddr: "127.0.0.1:10000", datacenter: "", minMode: structs.ACLModeEnabled, leaderMode: structs.ACLModeEnabled, }, "failed-members": tcase{ members: []serf.Member{ makeMember("consul", "primary", structs.ACLModeLegacy, serf.StatusAlive, net.IP([]byte{127, 0, 0, 1})), makeMember("consul", "primary", structs.ACLModeUnknown, serf.StatusFailed, net.IP([]byte{127, 0, 0, 2})), makeMember("consul", "primary", structs.ACLModeLegacy, serf.StatusFailed, net.IP([]byte{127, 0, 0, 3})), }, numServers: 3, leaderAddr: "127.0.0.1:10000", datacenter: "", minMode: structs.ACLModeUnknown, leaderMode: structs.ACLModeLegacy, }, } for name, tc := range cases { name := name tc := tc t.Run(name, func(t *testing.T) { actualServers, actualMinMode, actualLeaderMode := ServersGetACLMode(tc.members, tc.leaderAddr, tc.datacenter) require.Equal(t, tc.numServers, actualServers) require.Equal(t, tc.minMode, actualMinMode) require.Equal(t, tc.leaderMode, actualLeaderMode) }) } }