go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/buildbucket/appengine/internal/clients/fakepubsub.go (about)

     1  // Copyright 2022 The LUCI Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package clients
    16  
    17  import (
    18  	"context"
    19  
    20  	"cloud.google.com/go/pubsub"
    21  	"cloud.google.com/go/pubsub/pstest"
    22  	"google.golang.org/api/option"
    23  	"google.golang.org/grpc"
    24  	"google.golang.org/grpc/credentials/insecure"
    25  )
    26  
    27  // SetupTestPubsub creates a new fake Pub/Sub server and the client connection
    28  // to the server. It also adds the client into the context.
    29  func SetupTestPubsub(ctx context.Context, cloudProject string) (context.Context, *pstest.Server, *pubsub.Client, error) {
    30  	srv := pstest.NewServer()
    31  	conn, err := grpc.Dial(srv.Addr, grpc.WithTransportCredentials(insecure.NewCredentials()))
    32  	if err != nil {
    33  		return ctx, nil, nil, err
    34  	}
    35  
    36  	client, err := pubsub.NewClient(ctx, cloudProject, option.WithGRPCConn(conn))
    37  	if err != nil {
    38  		return ctx, nil, nil, err
    39  	}
    40  
    41  	mockClients, ok := ctx.Value(&mockPubsubClientKey).(map[string]*pubsub.Client)
    42  	if !ok {
    43  		mockClients = make(map[string]*pubsub.Client)
    44  	}
    45  	mockClients[cloudProject] = client
    46  	ctx = context.WithValue(ctx, &mockPubsubClientKey, mockClients)
    47  	return ctx, srv, client, nil
    48  }