diff --git a/etcdserver/cluster.go b/etcdserver/cluster.go index 5d068bde0..881808fa4 100644 --- a/etcdserver/cluster.go +++ b/etcdserver/cluster.go @@ -22,12 +22,12 @@ import ( "log" "net/url" "path" - "reflect" "sort" "strings" "sync" "github.com/coreos/etcd/pkg/flags" + "github.com/coreos/etcd/pkg/netutil" "github.com/coreos/etcd/pkg/types" "github.com/coreos/etcd/raft/raftpb" "github.com/coreos/etcd/store" @@ -391,7 +391,8 @@ func ValidateClusterAndAssignIDs(local *Cluster, existing *Cluster) error { sort.Sort(SortableMemberSliceByPeerURLs(lms)) for i := range ems { - if !reflect.DeepEqual(ems[i].PeerURLs, lms[i].PeerURLs) { + // TODO: Remove URLStringsEqual after improvement of using hostnames #2150 #2123 + if !netutil.URLStringsEqual(ems[i].PeerURLs, lms[i].PeerURLs) { return fmt.Errorf("unmatched member while checking PeerURLs") } lms[i].ID = ems[i].ID diff --git a/etcdserver/config.go b/etcdserver/config.go index cae3bc979..c722627c7 100644 --- a/etcdserver/config.go +++ b/etcdserver/config.go @@ -19,9 +19,9 @@ import ( "log" "net/http" "path" - "reflect" "sort" + "github.com/coreos/etcd/pkg/netutil" "github.com/coreos/etcd/pkg/types" "github.com/coreos/etcd/raft" ) @@ -74,9 +74,10 @@ func (c *ServerConfig) VerifyBootstrapConfig() error { } // Advertised peer URLs must match those in the cluster peer list + // TODO: Remove URLStringsEqual after improvement of using hostnames #2150 #2123 apurls := c.PeerURLs.StringSlice() sort.Strings(apurls) - if !reflect.DeepEqual(apurls, m.PeerURLs) { + if !netutil.URLStringsEqual(apurls, m.PeerURLs) { return fmt.Errorf("%s has different advertised URLs in the cluster and advertised peer URLs list", c.Name) } return nil diff --git a/pkg/netutil/netutil.go b/pkg/netutil/netutil.go index fa7f2e5d3..7de3c4203 100644 --- a/pkg/netutil/netutil.go +++ b/pkg/netutil/netutil.go @@ -18,6 +18,7 @@ import ( "log" "net" "net/url" + "reflect" ) var ( @@ -53,3 +54,48 @@ func ResolveTCPAddrs(urls ...[]url.URL) error { } return nil } + +// URLsEqual checks equality of url.URLS between two arrays. +// This check pass even if an URL is in hostname and opposite is in IP address. +func URLsEqual(a []url.URL, b []url.URL) bool { + if len(a) != len(b) { + return false + } + for i, urlA := range a { + urlB := b[i] + + if !reflect.DeepEqual(urlA, urlB) { + urls := []url.URL{urlA, urlB} + ResolveTCPAddrs(urls) + if !reflect.DeepEqual(urls[0], urls[1]) { + return false + } + } + } + + return true +} + +func URLStringsEqual(a []string, b []string) bool { + if len(a) != len(b) { + return false + } + urlsA := make([]url.URL, len(a)) + for _, str := range a { + u, err := url.Parse(str) + if err != nil { + return false + } + urlsA = append(urlsA, *u) + } + urlsB := make([]url.URL, len(b)) + for _, str := range b { + u, err := url.Parse(str) + if err != nil { + return false + } + urlsB = append(urlsB, *u) + } + + return URLsEqual(urlsA, urlsB) +} diff --git a/pkg/netutil/netutil_test.go b/pkg/netutil/netutil_test.go index 85bcf3cf1..f0a661d49 100644 --- a/pkg/netutil/netutil_test.go +++ b/pkg/netutil/netutil_test.go @@ -136,3 +136,108 @@ func TestResolveTCPAddrs(t *testing.T) { } } } + +func TestURLsEqual(t *testing.T) { + defer func() { resolveTCPAddr = net.ResolveTCPAddr }() + resolveTCPAddr = func(network, addr string) (*net.TCPAddr, error) { + host, port, err := net.SplitHostPort(addr) + if host != "example.com" { + return nil, errors.New("cannot resolve host.") + } + i, err := strconv.Atoi(port) + if err != nil { + return nil, err + } + return &net.TCPAddr{IP: net.ParseIP("10.0.10.1"), Port: i, Zone: ""}, nil + } + + tests := []struct { + a []url.URL + b []url.URL + expect bool + }{ + { + a: []url.URL{{Scheme: "http", Host: "127.0.0.1:4001"}}, + b: []url.URL{{Scheme: "http", Host: "127.0.0.1:4001"}}, + expect: true, + }, + { + a: []url.URL{{Scheme: "http", Host: "example.com:4001"}}, + b: []url.URL{{Scheme: "http", Host: "10.0.10.1:4001"}}, + expect: true, + }, + { + a: []url.URL{{Scheme: "http", Host: "127.0.0.1:4001"}, {Scheme: "http", Host: "127.0.0.1:7001"}}, + b: []url.URL{{Scheme: "http", Host: "127.0.0.1:4001"}, {Scheme: "http", Host: "127.0.0.1:7001"}}, + expect: true, + }, + { + a: []url.URL{{Scheme: "http", Host: "example.com:4001"}, {Scheme: "http", Host: "127.0.0.1:7001"}}, + b: []url.URL{{Scheme: "http", Host: "example.com:4001"}, {Scheme: "http", Host: "127.0.0.1:7001"}}, + expect: true, + }, + { + a: []url.URL{{Scheme: "http", Host: "10.0.10.1:4001"}, {Scheme: "http", Host: "127.0.0.1:7001"}}, + b: []url.URL{{Scheme: "http", Host: "example.com:4001"}, {Scheme: "http", Host: "127.0.0.1:7001"}}, + expect: true, + }, + { + a: []url.URL{{Scheme: "http", Host: "127.0.0.1:4001"}}, + b: []url.URL{{Scheme: "http", Host: "127.0.0.1:7001"}}, + expect: false, + }, + { + a: []url.URL{{Scheme: "http", Host: "example.com:7001"}}, + b: []url.URL{{Scheme: "http", Host: "10.0.10.1:4001"}}, + expect: false, + }, + { + a: []url.URL{{Scheme: "http", Host: "127.0.0.1:4001"}}, + b: []url.URL{{Scheme: "http", Host: "10.0.0.1:4001"}}, + expect: false, + }, + { + a: []url.URL{{Scheme: "http", Host: "example.com:4001"}}, + b: []url.URL{{Scheme: "http", Host: "10.0.0.1:4001"}}, + expect: false, + }, + { + a: []url.URL{{Scheme: "http", Host: "127.0.0.1:4001"}, {Scheme: "http", Host: "127.0.0.1:7001"}}, + b: []url.URL{{Scheme: "http", Host: "127.0.0.1:7001"}, {Scheme: "http", Host: "127.0.0.1:7001"}}, + expect: false, + }, + { + a: []url.URL{{Scheme: "http", Host: "example.com:4001"}, {Scheme: "http", Host: "127.0.0.1:7001"}}, + b: []url.URL{{Scheme: "http", Host: "127.0.0.1:7001"}, {Scheme: "http", Host: "127.0.0.1:7001"}}, + expect: false, + }, + { + a: []url.URL{{Scheme: "http", Host: "127.0.0.1:4001"}, {Scheme: "http", Host: "127.0.0.1:7001"}}, + b: []url.URL{{Scheme: "http", Host: "10.0.0.1:4001"}, {Scheme: "http", Host: "127.0.0.1:7001"}}, + expect: false, + }, + { + a: []url.URL{{Scheme: "http", Host: "example.com:4001"}, {Scheme: "http", Host: "127.0.0.1:7001"}}, + b: []url.URL{{Scheme: "http", Host: "10.0.0.1:4001"}, {Scheme: "http", Host: "127.0.0.1:7001"}}, + expect: false, + }, + { + a: []url.URL{{Scheme: "http", Host: "10.0.0.1:4001"}}, + b: []url.URL{{Scheme: "http", Host: "10.0.0.1:4001"}, {Scheme: "http", Host: "127.0.0.1:7001"}}, + expect: false, + }, + } + + for _, test := range tests { + result := URLsEqual(test.a, test.b) + if result != test.expect { + t.Errorf("a:%v b:%v, expected %v but %v", test.a, test.b, test.expect, result) + } + } +} +func TestURLStringsEqual(t *testing.T) { + result := URLStringsEqual([]string{"http://127.0.0.1:8080"}, []string{"http://127.0.0.1:8080"}) + if !result { + t.Errorf("unexpected result %v", result) + } +}