mirror of
https://github.com/etcd-io/etcd.git
synced 2024-09-27 06:25:44 +00:00
98 lines
3.1 KiB
Go
98 lines
3.1 KiB
Go
// Copyright 2017 The etcd 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 grpcproxy
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import (
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"golang.org/x/net/context"
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pb "github.com/coreos/etcd/etcdserver/etcdserverpb"
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"google.golang.org/grpc"
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"google.golang.org/grpc/metadata"
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)
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type ls2lc struct {
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leaseServer pb.LeaseServer
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}
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func LeaseServerToLeaseClient(ls pb.LeaseServer) pb.LeaseClient {
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return &ls2lc{ls}
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}
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func (c *ls2lc) LeaseGrant(ctx context.Context, in *pb.LeaseGrantRequest, opts ...grpc.CallOption) (*pb.LeaseGrantResponse, error) {
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return c.leaseServer.LeaseGrant(ctx, in)
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}
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func (c *ls2lc) LeaseRevoke(ctx context.Context, in *pb.LeaseRevokeRequest, opts ...grpc.CallOption) (*pb.LeaseRevokeResponse, error) {
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return c.leaseServer.LeaseRevoke(ctx, in)
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}
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func (c *ls2lc) LeaseKeepAlive(ctx context.Context, opts ...grpc.CallOption) (pb.Lease_LeaseKeepAliveClient, error) {
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// ch1 is buffered so server can send error on close
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ch1, ch2 := make(chan interface{}, 1), make(chan interface{})
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headerc, trailerc := make(chan metadata.MD, 1), make(chan metadata.MD, 1)
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cctx, ccancel := context.WithCancel(ctx)
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cli := &chanStream{recvc: ch1, sendc: ch2, ctx: cctx, cancel: ccancel}
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lclient := &ls2lcClientStream{chanClientStream{headerc, trailerc, cli}}
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sctx, scancel := context.WithCancel(ctx)
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srv := &chanStream{recvc: ch2, sendc: ch1, ctx: sctx, cancel: scancel}
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lserver := &ls2lcServerStream{chanServerStream{headerc, trailerc, srv, nil}}
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go func() {
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if err := c.leaseServer.LeaseKeepAlive(lserver); err != nil {
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select {
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case srv.sendc <- err:
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case <-sctx.Done():
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case <-cctx.Done():
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}
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}
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scancel()
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ccancel()
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}()
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return lclient, nil
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}
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func (c *ls2lc) LeaseTimeToLive(ctx context.Context, in *pb.LeaseTimeToLiveRequest, opts ...grpc.CallOption) (*pb.LeaseTimeToLiveResponse, error) {
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return c.leaseServer.LeaseTimeToLive(ctx, in)
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}
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// ls2lcClientStream implements Lease_LeaseKeepAliveClient
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type ls2lcClientStream struct{ chanClientStream }
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// ls2lcServerStream implements Lease_LeaseKeepAliveServer
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type ls2lcServerStream struct{ chanServerStream }
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func (s *ls2lcClientStream) Send(rr *pb.LeaseKeepAliveRequest) error {
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return s.SendMsg(rr)
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}
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func (s *ls2lcClientStream) Recv() (*pb.LeaseKeepAliveResponse, error) {
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var v interface{}
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if err := s.RecvMsg(&v); err != nil {
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return nil, err
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}
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return v.(*pb.LeaseKeepAliveResponse), nil
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}
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func (s *ls2lcServerStream) Send(rr *pb.LeaseKeepAliveResponse) error {
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return s.SendMsg(rr)
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}
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func (s *ls2lcServerStream) Recv() (*pb.LeaseKeepAliveRequest, error) {
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var v interface{}
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if err := s.RecvMsg(&v); err != nil {
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return nil, err
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}
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return v.(*pb.LeaseKeepAliveRequest), nil
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}
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