forked from grpc/grpc-go
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
resolver: add State fields to support error handling (grpc#2951)
- Loading branch information
Showing
24 changed files
with
659 additions
and
268 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,92 @@ | ||
| /* | ||
| * | ||
| * Copyright 2019 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 ( | ||
| "fmt" | ||
| "testing" | ||
|
|
||
| "google.golang.org/grpc/balancer" | ||
| "google.golang.org/grpc/connectivity" | ||
| "google.golang.org/grpc/resolver" | ||
| "google.golang.org/grpc/resolver/manual" | ||
| ) | ||
|
|
||
| var _ balancer.V2Balancer = &funcBalancer{} | ||
|
|
||
| type funcBalancer struct { | ||
| updateClientConnState func(s balancer.ClientConnState) error | ||
| } | ||
|
|
||
| func (*funcBalancer) HandleSubConnStateChange(balancer.SubConn, connectivity.State) { | ||
| panic("unimplemented") // v1 API | ||
| } | ||
| func (*funcBalancer) HandleResolvedAddrs([]resolver.Address, error) { | ||
| panic("unimplemented") // v1 API | ||
| } | ||
| func (b *funcBalancer) UpdateClientConnState(s balancer.ClientConnState) error { | ||
| return b.updateClientConnState(s) | ||
| } | ||
| func (*funcBalancer) ResolverError(error) { | ||
| panic("unimplemented") // resolver never reports error | ||
| } | ||
| func (*funcBalancer) UpdateSubConnState(balancer.SubConn, balancer.SubConnState) { | ||
| panic("unimplemented") // we never have sub-conns | ||
| } | ||
| func (*funcBalancer) Close() {} | ||
|
|
||
| type funcBalancerBuilder struct { | ||
| name string | ||
| instance *funcBalancer | ||
| } | ||
|
|
||
| func (b *funcBalancerBuilder) Build(balancer.ClientConn, balancer.BuildOptions) balancer.Balancer { | ||
| return b.instance | ||
| } | ||
| func (b *funcBalancerBuilder) Name() string { return b.name } | ||
|
|
||
| // TestBalancerErrorResolverPolling injects balancer errors and verifies | ||
| // ResolveNow is called on the resolver with the appropriate backoff strategy | ||
| // being consulted between ResolveNow calls. | ||
| func (s) TestBalancerErrorResolverPolling(t *testing.T) { | ||
| // The test balancer will return ErrBadResolverState iff the | ||
| // ClientConnState contains no addresses. | ||
| fb := &funcBalancer{ | ||
| updateClientConnState: func(s balancer.ClientConnState) error { | ||
| if len(s.ResolverState.Addresses) == 0 { | ||
| return balancer.ErrBadResolverState | ||
| } | ||
| return nil | ||
| }, | ||
| } | ||
| const balName = "BalancerErrorResolverPolling" | ||
| balancer.Register(&funcBalancerBuilder{name: balName, instance: fb}) | ||
|
|
||
| testResolverErrorPolling(t, | ||
| func(r *manual.Resolver) { | ||
| // No addresses so the balancer will fail. | ||
| r.CC.UpdateState(resolver.State{}) | ||
| }, func(r *manual.Resolver) { | ||
| // UpdateState will block if ResolveNow is being called (which blocks on | ||
| // rn), so call it in a goroutine. Include some address so the balancer | ||
| // will be happy. | ||
| go r.CC.UpdateState(resolver.State{Addresses: []resolver.Address{{Addr: "x"}}}) | ||
| }, | ||
| WithDefaultServiceConfig(fmt.Sprintf(`{ "loadBalancingConfig": [{"%v": {}}] }`, balName))) | ||
| } |
Oops, something went wrong.