| /* |
| * |
| * Copyright 2021 gRPC authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| package grpc |
| |
| import ( |
| "context" |
| "errors" |
| "net" |
| "net/url" |
| "testing" |
| "time" |
| |
| "github.com/google/go-cmp/cmp" |
| "google.golang.org/grpc/credentials/insecure" |
| |
| "google.golang.org/grpc/resolver" |
| ) |
| |
| func (s) TestParsedTarget_Success_WithoutCustomDialer(t *testing.T) { |
| defScheme := resolver.GetDefaultScheme() |
| tests := []struct { |
| target string |
| badScheme bool |
| wantParsed resolver.Target |
| }{ |
| // No scheme is specified. |
| {target: "", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: ""}}, |
| {target: "://", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "://"}}, |
| {target: ":///", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: ":///"}}, |
| {target: "://a/", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "://a/"}}, |
| {target: ":///a", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: ":///a"}}, |
| {target: "://a/b", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "://a/b"}}, |
| {target: "/", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "/"}}, |
| {target: "a/b", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "a/b"}}, |
| {target: "a//b", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "a//b"}}, |
| {target: "google.com", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "google.com"}}, |
| {target: "google.com/?a=b", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "google.com/"}}, |
| {target: "/unix/socket/address", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "/unix/socket/address"}}, |
| |
| // An unregistered scheme is specified. |
| {target: "a:///", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "a:///"}}, |
| {target: "a://b/", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "a://b/"}}, |
| {target: "a:///b", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "a:///b"}}, |
| {target: "a://b/c", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "a://b/c"}}, |
| {target: "a:b", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "a:b"}}, |
| {target: "a:/b", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "a:/b"}}, |
| {target: "a://b", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "a://b"}}, |
| |
| // A registered scheme is specified. |
| {target: "dns:///google.com", wantParsed: resolver.Target{Scheme: "dns", Authority: "", Endpoint: "google.com"}}, |
| {target: "dns://a.server.com/google.com", wantParsed: resolver.Target{Scheme: "dns", Authority: "a.server.com", Endpoint: "google.com"}}, |
| {target: "dns://a.server.com/google.com/?a=b", wantParsed: resolver.Target{Scheme: "dns", Authority: "a.server.com", Endpoint: "google.com/"}}, |
| {target: "unix:///a/b/c", wantParsed: resolver.Target{Scheme: "unix", Authority: "", Endpoint: "a/b/c"}}, |
| {target: "unix-abstract:a/b/c", wantParsed: resolver.Target{Scheme: "unix-abstract", Authority: "", Endpoint: "a/b/c"}}, |
| {target: "unix-abstract:a b", wantParsed: resolver.Target{Scheme: "unix-abstract", Authority: "", Endpoint: "a b"}}, |
| {target: "unix-abstract:a:b", wantParsed: resolver.Target{Scheme: "unix-abstract", Authority: "", Endpoint: "a:b"}}, |
| {target: "unix-abstract:a-b", wantParsed: resolver.Target{Scheme: "unix-abstract", Authority: "", Endpoint: "a-b"}}, |
| {target: "unix-abstract:/ a///://::!@#$%25^&*()b", wantParsed: resolver.Target{Scheme: "unix-abstract", Authority: "", Endpoint: " a///://::!@"}}, |
| {target: "unix-abstract:passthrough:abc", wantParsed: resolver.Target{Scheme: "unix-abstract", Authority: "", Endpoint: "passthrough:abc"}}, |
| {target: "unix-abstract:unix:///abc", wantParsed: resolver.Target{Scheme: "unix-abstract", Authority: "", Endpoint: "unix:///abc"}}, |
| {target: "unix-abstract:///a/b/c", wantParsed: resolver.Target{Scheme: "unix-abstract", Authority: "", Endpoint: "a/b/c"}}, |
| {target: "unix-abstract:///", wantParsed: resolver.Target{Scheme: "unix-abstract", Authority: "", Endpoint: ""}}, |
| {target: "passthrough:///unix:///a/b/c", wantParsed: resolver.Target{Scheme: "passthrough", Authority: "", Endpoint: "unix:///a/b/c"}}, |
| |
| // Cases for `scheme:absolute-path`. |
| {target: "dns:/a/b/c", wantParsed: resolver.Target{Scheme: "dns", Authority: "", Endpoint: "a/b/c"}}, |
| {target: "unregistered:/a/b/c", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "unregistered:/a/b/c"}}, |
| } |
| |
| for _, test := range tests { |
| t.Run(test.target, func(t *testing.T) { |
| target := test.target |
| if test.badScheme { |
| target = defScheme + ":///" + target |
| } |
| url, err := url.Parse(target) |
| if err != nil { |
| t.Fatalf("Unexpected error parsing URL: %v", err) |
| } |
| test.wantParsed.URL = *url |
| |
| cc, err := Dial(test.target, WithTransportCredentials(insecure.NewCredentials())) |
| if err != nil { |
| t.Fatalf("Dial(%q) failed: %v", test.target, err) |
| } |
| defer cc.Close() |
| |
| if !cmp.Equal(cc.parsedTarget, test.wantParsed) { |
| t.Errorf("cc.parsedTarget for dial target %q = %+v, want %+v", test.target, cc.parsedTarget, test.wantParsed) |
| } |
| }) |
| } |
| } |
| |
| func (s) TestParsedTarget_Failure_WithoutCustomDialer(t *testing.T) { |
| targets := []string{ |
| "unix://a/b/c", |
| "unix://authority", |
| "unix-abstract://authority/a/b/c", |
| "unix-abstract://authority", |
| } |
| |
| for _, target := range targets { |
| t.Run(target, func(t *testing.T) { |
| if cc, err := Dial(target, WithTransportCredentials(insecure.NewCredentials())); err == nil { |
| defer cc.Close() |
| t.Fatalf("Dial(%q) succeeded cc.parsedTarget = %+v, expected to fail", target, cc.parsedTarget) |
| } |
| }) |
| } |
| } |
| |
| func (s) TestParsedTarget_WithCustomDialer(t *testing.T) { |
| defScheme := resolver.GetDefaultScheme() |
| tests := []struct { |
| target string |
| badScheme bool |
| wantParsed resolver.Target |
| wantDialerAddress string |
| }{ |
| // unix:[local_path], unix:[/absolute], and unix://[/absolute] have |
| // different behaviors with a custom dialer. |
| { |
| target: "unix:a/b/c", |
| wantParsed: resolver.Target{Scheme: "unix", Authority: "", Endpoint: "a/b/c"}, |
| wantDialerAddress: "unix:a/b/c", |
| }, |
| { |
| target: "unix:/a/b/c", |
| wantParsed: resolver.Target{Scheme: "unix", Authority: "", Endpoint: "a/b/c"}, |
| wantDialerAddress: "unix:///a/b/c", |
| }, |
| { |
| target: "unix:///a/b/c", |
| wantParsed: resolver.Target{Scheme: "unix", Authority: "", Endpoint: "a/b/c"}, |
| wantDialerAddress: "unix:///a/b/c", |
| }, |
| { |
| target: "dns:///127.0.0.1:50051", |
| wantParsed: resolver.Target{Scheme: "dns", Authority: "", Endpoint: "127.0.0.1:50051"}, |
| wantDialerAddress: "127.0.0.1:50051", |
| }, |
| { |
| target: ":///127.0.0.1:50051", |
| badScheme: true, |
| wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: ":///127.0.0.1:50051"}, |
| wantDialerAddress: ":///127.0.0.1:50051", |
| }, |
| { |
| target: "dns://authority/127.0.0.1:50051", |
| wantParsed: resolver.Target{Scheme: "dns", Authority: "authority", Endpoint: "127.0.0.1:50051"}, |
| wantDialerAddress: "127.0.0.1:50051", |
| }, |
| { |
| target: "://authority/127.0.0.1:50051", |
| badScheme: true, |
| wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "://authority/127.0.0.1:50051"}, |
| wantDialerAddress: "://authority/127.0.0.1:50051", |
| }, |
| { |
| target: "/unix/socket/address", |
| badScheme: true, |
| wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "/unix/socket/address"}, |
| wantDialerAddress: "/unix/socket/address", |
| }, |
| { |
| target: "passthrough://a.server.com/google.com", |
| wantParsed: resolver.Target{Scheme: "passthrough", Authority: "a.server.com", Endpoint: "google.com"}, |
| wantDialerAddress: "google.com", |
| }, |
| } |
| |
| for _, test := range tests { |
| t.Run(test.target, func(t *testing.T) { |
| target := test.target |
| if test.badScheme { |
| target = defScheme + ":///" + target |
| } |
| url, err := url.Parse(target) |
| if err != nil { |
| t.Fatalf("Unexpected error parsing URL: %v", err) |
| } |
| test.wantParsed.URL = *url |
| |
| addrCh := make(chan string, 1) |
| dialer := func(ctx context.Context, address string) (net.Conn, error) { |
| addrCh <- address |
| return nil, errors.New("dialer error") |
| } |
| |
| cc, err := Dial(test.target, WithTransportCredentials(insecure.NewCredentials()), WithContextDialer(dialer)) |
| if err != nil { |
| t.Fatalf("Dial(%q) failed: %v", test.target, err) |
| } |
| defer cc.Close() |
| |
| select { |
| case addr := <-addrCh: |
| if addr != test.wantDialerAddress { |
| t.Fatalf("address in custom dialer is %q, want %q", addr, test.wantDialerAddress) |
| } |
| case <-time.After(time.Second): |
| t.Fatal("timeout when waiting for custom dialer to be invoked") |
| } |
| if !cmp.Equal(cc.parsedTarget, test.wantParsed) { |
| t.Errorf("cc.parsedTarget for dial target %q = %+v, want %+v", test.target, cc.parsedTarget, test.wantParsed) |
| } |
| }) |
| } |
| } |