| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 cache |
| |
| import ( |
| "github.com/apache/servicecomb-service-center/pkg/cache" |
| pb "github.com/apache/servicecomb-service-center/server/core/proto" |
| serviceUtil "github.com/apache/servicecomb-service-center/server/service/util" |
| "golang.org/x/net/context" |
| "math" |
| "time" |
| ) |
| |
| var FindInstances = &FindInstancesCache{ |
| Tree: cache.NewTree(cache.Configure(). |
| WithTTL(2 * time.Minute). |
| WithMaxSize(math.MaxInt64))} |
| |
| func init() { |
| FindInstances.AddFilter( |
| &ServiceFilter{}, |
| &VersionRuleFilter{}, |
| &TagsFilter{}, |
| &AccessibleFilter{}, |
| &InstancesFilter{}) |
| } |
| |
| type VersionRuleCacheItem struct { |
| VersionRule string |
| ServiceIds []string |
| Instances []*pb.MicroServiceInstance |
| Rev string |
| } |
| |
| type FindInstancesCache struct { |
| *cache.Tree |
| } |
| |
| func (f *FindInstancesCache) Get(ctx context.Context, consumer *pb.MicroService, provider *pb.MicroServiceKey, tags []string) (*VersionRuleCacheItem, error) { |
| cloneCtx := context.WithValue(context.WithValue(context.WithValue(ctx, |
| CTX_FIND_CONSUMER, consumer), |
| CTX_FIND_PROVIDER, provider), |
| CTX_FIND_TAGS, tags) |
| |
| node, err := f.Tree.Get(cloneCtx, cache.Options().Temporary(ctx.Value(serviceUtil.CTX_NOCACHE) == "1")) |
| if node == nil { |
| return nil, err |
| } |
| return node.Cache.Get(CACHE_FIND).(*VersionRuleCacheItem), nil |
| } |
| |
| func (f *FindInstancesCache) Remove(provider *pb.MicroServiceKey) { |
| f.Tree.Remove(context.WithValue(context.Background(), CTX_FIND_PROVIDER, provider)) |
| if len(provider.Alias) > 0 { |
| copy := *provider |
| copy.ServiceName = copy.Alias |
| f.Tree.Remove(context.WithValue(context.Background(), CTX_FIND_PROVIDER, ©)) |
| } |
| } |