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Abstract sockets, procfs and unix.Ucred are only available on Linux. Signed-off-by: Kazuyoshi Kato <katokazu@amazon.com>
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| /* | ||
| Copyright The containerd 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 ttrpc | ||
|
|
||
| import ( | ||
| "context" | ||
| "strings" | ||
| "testing" | ||
| "time" | ||
|
|
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| "github.com/prometheus/procfs" | ||
| ) | ||
|
|
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| func TestUnixSocketHandshake(t *testing.T) { | ||
| var ( | ||
| ctx = context.Background() | ||
| server = mustServer(t)(NewServer(WithServerHandshaker(UnixSocketRequireSameUser()))) | ||
| addr, listener = newTestListener(t) | ||
| errs = make(chan error, 1) | ||
| client, cleanup = newTestClient(t, addr) | ||
| ) | ||
| defer cleanup() | ||
| defer listener.Close() | ||
| go func() { | ||
| errs <- server.Serve(ctx, listener) | ||
| }() | ||
|
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| registerTestingService(server, &testingServer{}) | ||
|
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| var tp testPayload | ||
| // server shutdown, but we still make a call. | ||
| if err := client.Call(ctx, serviceName, "Test", &tp, &tp); err != nil { | ||
| t.Fatalf("unexpected error making call: %v", err) | ||
| } | ||
| } | ||
|
|
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| func BenchmarkRoundTripUnixSocketCreds(b *testing.B) { | ||
| // TODO(stevvooe): Right now, there is a 5x performance decrease when using | ||
| // unix socket credentials. See (UnixCredentialsFunc).Handshake for | ||
| // details. | ||
|
|
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| var ( | ||
| ctx = context.Background() | ||
| server = mustServer(b)(NewServer(WithServerHandshaker(UnixSocketRequireSameUser()))) | ||
| testImpl = &testingServer{} | ||
| addr, listener = newTestListener(b) | ||
| client, cleanup = newTestClient(b, addr) | ||
| tclient = newTestingClient(client) | ||
| ) | ||
|
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| defer listener.Close() | ||
| defer cleanup() | ||
|
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| registerTestingService(server, testImpl) | ||
|
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| go server.Serve(ctx, listener) | ||
| defer server.Shutdown(ctx) | ||
|
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| var tp testPayload | ||
| b.ResetTimer() | ||
|
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| for i := 0; i < b.N; i++ { | ||
| if _, err := tclient.Test(ctx, &tp); err != nil { | ||
| b.Fatal(err) | ||
| } | ||
| } | ||
| } | ||
|
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| func TestServerEOF(t *testing.T) { | ||
| var ( | ||
| ctx = context.Background() | ||
| server = mustServer(t)(NewServer()) | ||
| addr, listener = newTestListener(t) | ||
| client, cleanup = newTestClient(t, addr) | ||
| ) | ||
| defer cleanup() | ||
| defer listener.Close() | ||
|
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| socketCountBefore := socketCount(t) | ||
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| go server.Serve(ctx, listener) | ||
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| registerTestingService(server, &testingServer{}) | ||
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| tp := &testPayload{} | ||
| // do a regular call | ||
| if err := client.Call(ctx, serviceName, "Test", tp, tp); err != nil { | ||
| t.Fatalf("unexpected error during test call: %v", err) | ||
| } | ||
|
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| // close the client, so that server gets EOF | ||
| if err := client.Close(); err != nil { | ||
| t.Fatalf("unexpected error while closing client: %v", err) | ||
| } | ||
|
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| // server should eventually close the client connection | ||
| maxAttempts := 20 | ||
| for i := 1; i <= maxAttempts; i++ { | ||
| socketCountAfter := socketCount(t) | ||
| if socketCountAfter < socketCountBefore { | ||
| break | ||
| } | ||
| if i == maxAttempts { | ||
| t.Fatalf("expected number of open sockets to be less than %d after client close, got %d open sockets", | ||
| socketCountBefore, socketCountAfter) | ||
| } | ||
| time.Sleep(100 * time.Millisecond) | ||
| } | ||
| } | ||
|
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| func socketCount(t *testing.T) int { | ||
| proc, err := procfs.Self() | ||
| if err != nil { | ||
| t.Fatalf("unexpected error while reading procfs: %v", err) | ||
| } | ||
| fds, err := proc.FileDescriptorTargets() | ||
| if err != nil { | ||
| t.Fatalf("unexpected error while listing open file descriptors: %v", err) | ||
| } | ||
|
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| sockets := 0 | ||
| for _, fd := range fds { | ||
| if strings.Contains(fd, "socket") { | ||
| sockets++ | ||
| } | ||
| } | ||
| return sockets | ||
| } |
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