| /* |
| * 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 util |
| |
| import ( |
| "context" |
| "crypto/sha1" |
| "encoding/json" |
| "fmt" |
| "strconv" |
| "strings" |
| "time" |
| |
| "github.com/apache/servicecomb-service-center/datasource/etcd/path" |
| "github.com/apache/servicecomb-service-center/datasource/etcd/sd" |
| "github.com/apache/servicecomb-service-center/datasource/etcd/state/kvstore" |
| "github.com/apache/servicecomb-service-center/pkg/log" |
| "github.com/apache/servicecomb-service-center/pkg/util" |
| pb "github.com/go-chassis/cari/discovery" |
| "github.com/go-chassis/cari/pkg/errsvc" |
| "github.com/little-cui/etcdadpt" |
| ) |
| |
| func GetLeaseID(ctx context.Context, domainProject string, serviceID string, instanceID string) (int64, error) { |
| opts := append(FromContext(ctx), |
| etcdadpt.WithStrKey(path.GenerateInstanceLeaseKey(domainProject, serviceID, instanceID))) |
| resp, err := sd.Lease().Search(ctx, opts...) |
| if err != nil { |
| return -1, err |
| } |
| if len(resp.Kvs) <= 0 { |
| return -1, nil |
| } |
| leaseID, _ := strconv.ParseInt(resp.Kvs[0].Value.(string), 10, 64) |
| return leaseID, nil |
| } |
| |
| func GetInstance(ctx context.Context, domainProject string, serviceID string, instanceID string) (*pb.MicroServiceInstance, error) { |
| key := path.GenerateInstanceKey(domainProject, serviceID, instanceID) |
| opts := append(FromContext(ctx), etcdadpt.WithStrKey(key)) |
| |
| resp, err := sd.Instance().Search(ctx, opts...) |
| if err != nil { |
| return nil, err |
| } |
| if len(resp.Kvs) == 0 { |
| return nil, nil |
| } |
| |
| return resp.Kvs[0].Value.(*pb.MicroServiceInstance), nil |
| } |
| |
| func ExistInstance(ctx context.Context, domainProject string, serviceID string, instanceID string) (bool, error) { |
| key := path.GenerateInstanceKey(domainProject, serviceID, instanceID) |
| opts := append(FromContext(ctx), etcdadpt.WithStrKey(key)) |
| resp, err := sd.Instance().Search(ctx, opts...) |
| if err != nil { |
| return false, err |
| } |
| if resp.Count == 0 { |
| return false, nil |
| } |
| return true, nil |
| } |
| |
| func FormatRevision(revs, counts []int64) (s string) { |
| for i, rev := range revs { |
| s += fmt.Sprintf("%d.%d,", rev, counts[i]) |
| } |
| return fmt.Sprintf("%x", sha1.Sum(util.StringToBytesWithNoCopy(s))) |
| } |
| |
| func GetAllInstancesOfOneService(ctx context.Context, domainProject string, serviceID string) ([]*pb.MicroServiceInstance, error) { |
| key := path.GenerateInstanceKey(domainProject, serviceID, "") |
| opts := append(FromContext(ctx), etcdadpt.WithStrKey(key), etcdadpt.WithPrefix()) |
| resp, err := sd.Instance().Search(ctx, opts...) |
| if err != nil { |
| log.Error(fmt.Sprintf("get service[%s]'s instances failed", serviceID), err) |
| return nil, err |
| } |
| |
| instances := make([]*pb.MicroServiceInstance, 0, len(resp.Kvs)) |
| for _, kv := range resp.Kvs { |
| instances = append(instances, kv.Value.(*pb.MicroServiceInstance)) |
| } |
| return instances, nil |
| } |
| |
| func GetInstanceCountOfOneService(ctx context.Context, domainProject string, serviceID string) (int64, error) { |
| key := path.GenerateInstanceKey(domainProject, serviceID, "") |
| opts := append(FromContext(ctx), |
| etcdadpt.WithStrKey(key), |
| etcdadpt.WithPrefix(), |
| etcdadpt.WithCountOnly()) |
| resp, err := sd.Instance().Search(ctx, opts...) |
| if err != nil { |
| log.Error(fmt.Sprintf("get number of service[%s]'s instances failed", serviceID), err) |
| return 0, err |
| } |
| return resp.Count, nil |
| } |
| |
| type EndpointIndexValue struct { |
| ServiceID string |
| InstanceID string |
| } |
| |
| func ParseEndpointIndexValue(value []byte) EndpointIndexValue { |
| endpointValue := EndpointIndexValue{} |
| tmp := util.BytesToStringWithNoCopy(value) |
| splitedTmp := strings.Split(tmp, "/") |
| endpointValue.ServiceID = splitedTmp[0] |
| endpointValue.InstanceID = splitedTmp[1] |
| return endpointValue |
| } |
| |
| func DeleteServiceAllInstances(ctx context.Context, serviceID string) error { |
| domainProject := util.ParseDomainProject(ctx) |
| |
| instanceLeaseKey := path.GenerateInstanceLeaseKey(domainProject, serviceID, "") |
| resp, err := sd.Lease().Search(ctx, |
| etcdadpt.WithStrKey(instanceLeaseKey), |
| etcdadpt.WithPrefix(), |
| etcdadpt.WithNoCache()) |
| if err != nil { |
| log.Error(fmt.Sprintf("delete all of service[%s]'s instances failed: get instance lease failed", serviceID), err) |
| return err |
| } |
| if resp.Count <= 0 { |
| return nil |
| } |
| for _, v := range resp.Kvs { |
| leaseID, _ := strconv.ParseInt(v.Value.(string), 10, 64) |
| err := etcdadpt.Instance().LeaseRevoke(ctx, leaseID) |
| if err != nil { |
| log.Error("", err) |
| } |
| } |
| log.Warn(fmt.Sprintf("force delete service[%s] %d instance.", serviceID, resp.Count)) |
| return nil |
| } |
| |
| func QueryServiceInstancesKvs(ctx context.Context, serviceID string, rev int64) ([]*kvstore.KeyValue, error) { |
| domainProject := util.ParseDomainProject(ctx) |
| key := path.GenerateInstanceKey(domainProject, serviceID, "") |
| resp, err := sd.Instance().Search(ctx, |
| etcdadpt.WithStrKey(key), |
| etcdadpt.WithPrefix(), |
| etcdadpt.WithRev(rev)) |
| if err != nil { |
| log.Error(fmt.Sprintf("get service[%s]'s instances with revision %d failed", |
| serviceID, rev), err) |
| return nil, err |
| } |
| return resp.Kvs, nil |
| } |
| |
| func UpdateInstance(ctx context.Context, domainProject string, instance *pb.MicroServiceInstance) *errsvc.Error { |
| leaseID, err := GetLeaseID(ctx, domainProject, instance.ServiceId, instance.InstanceId) |
| if err != nil { |
| return pb.NewError(pb.ErrInternal, err.Error()) |
| } |
| if leaseID == -1 { |
| return pb.NewError(pb.ErrInstanceNotExists, "Instance's leaseId not exist.") |
| } |
| |
| instance.ModTimestamp = strconv.FormatInt(time.Now().Unix(), 10) |
| data, err := json.Marshal(instance) |
| if err != nil { |
| return pb.NewError(pb.ErrInternal, err.Error()) |
| } |
| |
| key := path.GenerateInstanceKey(domainProject, instance.ServiceId, instance.InstanceId) |
| |
| resp, err := etcdadpt.TxnWithCmp(ctx, |
| etcdadpt.Ops(etcdadpt.OpPut(etcdadpt.WithStrKey(key), etcdadpt.WithValue(data), etcdadpt.WithLease(leaseID))), |
| etcdadpt.If(etcdadpt.NotEqualVer(path.GenerateServiceKey(domainProject, instance.ServiceId), 0)), |
| nil) |
| if err != nil { |
| return pb.NewError(pb.ErrUnavailableBackend, err.Error()) |
| } |
| if !resp.Succeeded { |
| return pb.NewError(pb.ErrInstanceNotExists, "Instance does not exist.") |
| } |
| return nil |
| } |