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grpc: restrict status codes from control plane (gRFC A54) #5653
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Original file line number | Diff line number | Diff line change |
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/* | ||
* | ||
* Copyright 2022 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 test | ||
|
||
import ( | ||
"context" | ||
"strings" | ||
"testing" | ||
"time" | ||
|
||
"google.golang.org/grpc" | ||
"google.golang.org/grpc/balancer" | ||
"google.golang.org/grpc/balancer/base" | ||
"google.golang.org/grpc/codes" | ||
"google.golang.org/grpc/connectivity" | ||
"google.golang.org/grpc/internal/balancer/stub" | ||
iresolver "google.golang.org/grpc/internal/resolver" | ||
"google.golang.org/grpc/internal/stubserver" | ||
"google.golang.org/grpc/resolver" | ||
"google.golang.org/grpc/resolver/manual" | ||
"google.golang.org/grpc/status" | ||
testpb "google.golang.org/grpc/test/grpc_testing" | ||
) | ||
|
||
func (s) TestConfigSelectorStatusCodes(t *testing.T) { | ||
testCases := []struct { | ||
name string | ||
csErr error | ||
want error | ||
}{{ | ||
name: "legal status code", | ||
csErr: status.Errorf(codes.Unavailable, "this error is fine"), | ||
want: status.Errorf(codes.Unavailable, "this error is fine"), | ||
}, { | ||
name: "illegal status code", | ||
csErr: status.Errorf(codes.NotFound, "this error is bad"), | ||
want: status.Errorf(codes.Internal, "this error is bad"), | ||
}} | ||
|
||
for _, tc := range testCases { | ||
t.Run(tc.name, func(t *testing.T) { | ||
ss := &stubserver.StubServer{ | ||
EmptyCallF: func(ctx context.Context, in *testpb.Empty) (*testpb.Empty, error) { | ||
return &testpb.Empty{}, nil | ||
}, | ||
} | ||
ss.R = manual.NewBuilderWithScheme("confSel") | ||
|
||
if err := ss.Start(nil); err != nil { | ||
t.Fatalf("Error starting endpoint server: %v", err) | ||
} | ||
defer ss.Stop() | ||
|
||
state := iresolver.SetConfigSelector(resolver.State{ | ||
Addresses: []resolver.Address{{Addr: ss.Address}}, | ||
ServiceConfig: parseServiceConfig(t, ss.R, "{}"), | ||
}, funcConfigSelector{ | ||
f: func(i iresolver.RPCInfo) (*iresolver.RPCConfig, error) { | ||
return nil, tc.csErr | ||
}, | ||
}) | ||
ss.R.UpdateState(state) // Blocks until config selector is applied | ||
|
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ctx, cancel := context.WithTimeout(context.Background(), defaultTestTimeout) | ||
defer cancel() | ||
if _, err := ss.Client.EmptyCall(ctx, &testpb.Empty{}); status.Code(err) != status.Code(tc.want) || !strings.Contains(err.Error(), status.Convert(tc.want).Message()) { | ||
t.Fatalf("client.EmptyCall(_, _) = _, %v; want _, %v", err, tc.want) | ||
} | ||
}) | ||
} | ||
} | ||
|
||
func (s) TestPickerStatusCodes(t *testing.T) { | ||
testCases := []struct { | ||
name string | ||
pickerErr error | ||
want error | ||
}{{ | ||
name: "legal status code", | ||
pickerErr: status.Errorf(codes.Unavailable, "this error is fine"), | ||
want: status.Errorf(codes.Unavailable, "this error is fine"), | ||
}, { | ||
name: "illegal status code", | ||
pickerErr: status.Errorf(codes.NotFound, "this error is bad"), | ||
want: status.Errorf(codes.Internal, "this error is bad"), | ||
}} | ||
|
||
for _, tc := range testCases { | ||
t.Run(tc.name, func(t *testing.T) { | ||
ss := &stubserver.StubServer{ | ||
EmptyCallF: func(ctx context.Context, in *testpb.Empty) (*testpb.Empty, error) { | ||
return &testpb.Empty{}, nil | ||
}, | ||
} | ||
|
||
if err := ss.Start(nil); err != nil { | ||
t.Fatalf("Error starting endpoint server: %v", err) | ||
} | ||
defer ss.Stop() | ||
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// Create a stub balancer that creates a picker that always returns | ||
// an error. | ||
sbf := stub.BalancerFuncs{ | ||
UpdateClientConnState: func(d *stub.BalancerData, _ balancer.ClientConnState) error { | ||
d.ClientConn.UpdateState(balancer.State{ | ||
ConnectivityState: connectivity.TransientFailure, | ||
Picker: base.NewErrPicker(tc.pickerErr), | ||
}) | ||
return nil | ||
}, | ||
} | ||
stub.Register("testPickerStatusCodesBalancer", sbf) | ||
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ss.NewServiceConfig(`{"loadBalancingConfig": [{"testPickerStatusCodesBalancer":{}}] }`) | ||
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// Make calls until pickerErr is received. | ||
ctx, cancel := context.WithTimeout(context.Background(), defaultTestTimeout) | ||
defer cancel() | ||
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var lastErr error | ||
for ctx.Err() == nil { | ||
if _, lastErr = ss.Client.EmptyCall(ctx, &testpb.Empty{}); status.Code(lastErr) == status.Code(tc.want) && strings.Contains(lastErr.Error(), status.Convert(tc.want).Message()) { | ||
// Success! | ||
return | ||
} | ||
time.Sleep(time.Millisecond) | ||
} | ||
|
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t.Fatalf("client.EmptyCall(_, _) = _, %v; want _, %v", lastErr, tc.want) | ||
}) | ||
} | ||
} | ||
|
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func (s) TestCallCredsFromDialOptionsStatusCodes(t *testing.T) { | ||
testCases := []struct { | ||
name string | ||
credsErr error | ||
want error | ||
}{{ | ||
name: "legal status code", | ||
credsErr: status.Errorf(codes.Unavailable, "this error is fine"), | ||
want: status.Errorf(codes.Unavailable, "this error is fine"), | ||
}, { | ||
name: "illegal status code", | ||
credsErr: status.Errorf(codes.NotFound, "this error is bad"), | ||
want: status.Errorf(codes.Internal, "this error is bad"), | ||
}} | ||
|
||
for _, tc := range testCases { | ||
t.Run(tc.name, func(t *testing.T) { | ||
ss := &stubserver.StubServer{ | ||
EmptyCallF: func(ctx context.Context, in *testpb.Empty) (*testpb.Empty, error) { | ||
return &testpb.Empty{}, nil | ||
}, | ||
} | ||
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errChan := make(chan error, 1) | ||
creds := &testPerRPCCredentials{errChan: errChan} | ||
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if err := ss.Start(nil, grpc.WithPerRPCCredentials(creds)); err != nil { | ||
t.Fatalf("Error starting endpoint server: %v", err) | ||
} | ||
defer ss.Stop() | ||
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ctx, cancel := context.WithTimeout(context.Background(), defaultTestTimeout) | ||
defer cancel() | ||
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errChan <- tc.credsErr | ||
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if _, err := ss.Client.EmptyCall(ctx, &testpb.Empty{}); status.Code(err) != status.Code(tc.want) || !strings.Contains(err.Error(), status.Convert(tc.want).Message()) { | ||
t.Fatalf("client.EmptyCall(_, _) = _, %v; want _, %v", err, tc.want) | ||
} | ||
}) | ||
} | ||
} | ||
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func (s) TestCallCredsFromCallOptionsStatusCodes(t *testing.T) { | ||
testCases := []struct { | ||
name string | ||
credsErr error | ||
want error | ||
}{{ | ||
name: "legal status code", | ||
credsErr: status.Errorf(codes.Unavailable, "this error is fine"), | ||
want: status.Errorf(codes.Unavailable, "this error is fine"), | ||
}, { | ||
name: "illegal status code", | ||
credsErr: status.Errorf(codes.NotFound, "this error is bad"), | ||
want: status.Errorf(codes.Internal, "this error is bad"), | ||
}} | ||
|
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for _, tc := range testCases { | ||
t.Run(tc.name, func(t *testing.T) { | ||
ss := &stubserver.StubServer{ | ||
EmptyCallF: func(ctx context.Context, in *testpb.Empty) (*testpb.Empty, error) { | ||
return &testpb.Empty{}, nil | ||
}, | ||
} | ||
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errChan := make(chan error, 1) | ||
creds := &testPerRPCCredentials{errChan: errChan} | ||
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if err := ss.Start(nil); err != nil { | ||
t.Fatalf("Error starting endpoint server: %v", err) | ||
} | ||
defer ss.Stop() | ||
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ctx, cancel := context.WithTimeout(context.Background(), defaultTestTimeout) | ||
defer cancel() | ||
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errChan <- tc.credsErr | ||
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if _, err := ss.Client.EmptyCall(ctx, &testpb.Empty{}, grpc.PerRPCCredentials(creds)); status.Code(err) != status.Code(tc.want) || !strings.Contains(err.Error(), status.Convert(tc.want).Message()) { | ||
t.Fatalf("client.EmptyCall(_, _) = _, %v; want _, %v", err, tc.want) | ||
} | ||
}) | ||
} | ||
} |
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I'm a little concerned that we have to do this in multiple places. How can we guarantee that we haven't missed a place (in this PR), or that we don't miss one in the future when we are adding something.
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A54 specifies the places that should be covered, and this PR should cover all of them. I've also reached out to Eric about whether other plugins (e.g. compressors and encoders) should be considered.