istio

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// Copyright Istio 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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package mock
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import (
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	"context"
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	"fmt"
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	"net"
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	"google.golang.org/grpc"
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	gcapb "istio.io/istio/security/proto/providers/google"
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)
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// CAService is a simple mocked Google CA Service.
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type CAService struct {
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	*gcapb.UnimplementedMeshCertificateServiceServer
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	Certs []string
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	Err   error
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}
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// CreateCertificate is a mocked function for the Google Mesh CA API.
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func (ca *CAService) CreateCertificate(ctx context.Context, in *gcapb.MeshCertificateRequest) (
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	*gcapb.MeshCertificateResponse, error,
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) {
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	if ca.Err == nil {
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		return &gcapb.MeshCertificateResponse{CertChain: ca.Certs}, nil
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	}
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	return nil, ca.Err
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}
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// CAServer is the mocked Mesh CA server.
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type CAServer struct {
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	Server  *grpc.Server
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	Address string
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}
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// CreateServer creates a mocked local Google CA server and runs it in a separate thread.
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// nolint: interfacer
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func CreateServer(addr string, service *CAService) (*CAServer, error) {
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	// create a local grpc server
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	s := &CAServer{
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		Server: grpc.NewServer(),
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	}
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	lis, err := net.Listen("tcp", addr)
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	if err != nil {
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		return nil, fmt.Errorf("failed to listen on the TCP address: %v", err)
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	}
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	s.Address = lis.Addr().String()
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	var serveErr error
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	gcapb.RegisterMeshCertificateServiceServer(s.Server, service)
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	go func() {
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		if err := s.Server.Serve(lis); err != nil {
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			serveErr = err
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		}
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	}()
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	if serveErr != nil {
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		return nil, err
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	}
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	return s, nil
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}
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// Stop stops the Mock Mesh CA server.
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func (s *CAServer) Stop() {
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	if s.Server != nil {
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		s.Server.Stop()
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	}
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}
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