mirror of
https://github.com/k3s-io/k3s.git
synced 2024-06-07 19:41:36 +00:00
57 lines
1.6 KiB
Go
57 lines
1.6 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 v3lock
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import (
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"context"
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"go.etcd.io/etcd/clientv3"
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"go.etcd.io/etcd/clientv3/concurrency"
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"go.etcd.io/etcd/etcdserver/api/v3lock/v3lockpb"
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)
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type lockServer struct {
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c *clientv3.Client
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}
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func NewLockServer(c *clientv3.Client) v3lockpb.LockServer {
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return &lockServer{c}
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}
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func (ls *lockServer) Lock(ctx context.Context, req *v3lockpb.LockRequest) (*v3lockpb.LockResponse, error) {
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s, err := concurrency.NewSession(
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ls.c,
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concurrency.WithLease(clientv3.LeaseID(req.Lease)),
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concurrency.WithContext(ctx),
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)
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if err != nil {
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return nil, err
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}
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s.Orphan()
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m := concurrency.NewMutex(s, string(req.Name))
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if err = m.Lock(ctx); err != nil {
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return nil, err
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}
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return &v3lockpb.LockResponse{Header: m.Header(), Key: []byte(m.Key())}, nil
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}
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func (ls *lockServer) Unlock(ctx context.Context, req *v3lockpb.UnlockRequest) (*v3lockpb.UnlockResponse, error) {
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resp, err := ls.c.Delete(ctx, string(req.Key))
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if err != nil {
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return nil, err
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}
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return &v3lockpb.UnlockResponse{Header: resp.Header}, nil
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}
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