mirror of https://github.com/grpc/grpc-go.git
71 lines
2.3 KiB
Go
71 lines
2.3 KiB
Go
/*
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*
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* Copyright 2023 gRPC authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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package testutils
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import (
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"google.golang.org/grpc/internal"
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"google.golang.org/grpc/internal/pretty"
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"google.golang.org/grpc/resolver"
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"google.golang.org/grpc/serviceconfig"
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)
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// Logger wraps the logging methods from testing.T.
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type Logger interface {
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Log(args ...any)
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Logf(format string, args ...any)
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Errorf(format string, args ...any)
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}
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// ResolverClientConn is a fake implementation of the resolver.ClientConn
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// interface to be used in tests.
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type ResolverClientConn struct {
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resolver.ClientConn // Embedding the interface to avoid implementing deprecated methods.
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Logger Logger // Tests should pass testing.T for this.
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UpdateStateF func(resolver.State) error // Invoked when resolver pushes a state update.
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ReportErrorF func(err error) // Invoked when resolver pushes an error.
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}
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// UpdateState invokes the test specified callback with the update received from
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// the resolver. If the callback returns a non-nil error, the same will be
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// propagated to the resolver.
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func (t *ResolverClientConn) UpdateState(s resolver.State) error {
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t.Logger.Logf("testutils.ResolverClientConn: UpdateState(%s)", pretty.ToJSON(s))
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if t.UpdateStateF != nil {
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return t.UpdateStateF(s)
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}
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return nil
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}
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// ReportError pushes the error received from the resolver on to ErrorCh.
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func (t *ResolverClientConn) ReportError(err error) {
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t.Logger.Logf("testutils.ResolverClientConn: ReportError(%v)", err)
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if t.ReportErrorF != nil {
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t.ReportErrorF(err)
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}
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}
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// ParseServiceConfig parses the provided service by delegating the work to the
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// implementation in the grpc package.
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func (t *ResolverClientConn) ParseServiceConfig(jsonSC string) *serviceconfig.ParseResult {
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return internal.ParseServiceConfig.(func(string) *serviceconfig.ParseResult)(jsonSC)
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}
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