mirror of
https://gitee.com/milvus-io/milvus.git
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a0f6b31380
1. Fix primary-secondary replication switchover blocking by delete replicate pchannel meta using modRevision. 2. Stop channel replicator(scanner) when cluster role changes to prevent continued message consumption and replication. 3. Close Milvus client to prevent goroutine leak. 4. Create Milvus client once for a channel replicator. 5. Simplify CDC controller and resources. issue: https://github.com/milvus-io/milvus/issues/44123 --------- Signed-off-by: bigsheeper <yihao.dai@zilliz.com>
96 lines
2.7 KiB
Go
96 lines
2.7 KiB
Go
// Licensed to the LF AI & Data foundation under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. 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 resource
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import (
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"reflect"
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clientv3 "go.etcd.io/etcd/client/v3"
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"github.com/milvus-io/milvus/internal/cdc/replication"
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)
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var r *resourceImpl // singleton resource instance
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// optResourceInit is the option to initialize the resource.
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type optResourceInit func(r *resourceImpl)
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// OptETCD provides the etcd client to the resource.
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func OptETCD(etcd *clientv3.Client) optResourceInit {
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return func(r *resourceImpl) {
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r.etcdClient = etcd
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}
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}
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// OptReplicateManagerClient provides the replicate manager client to the resource.
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func OptReplicateManagerClient(replicateManagerClient replication.ReplicateManagerClient) optResourceInit {
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return func(r *resourceImpl) {
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r.replicateManagerClient = replicateManagerClient
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}
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}
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// Done finish all initialization of resources.
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func Init(opts ...optResourceInit) {
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newR := &resourceImpl{}
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for _, opt := range opts {
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opt(newR)
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}
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assertNotNil(newR.ETCD())
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assertNotNil(newR.ReplicateManagerClient())
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r = newR
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}
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// Release releases the singleton of resources.
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func Release() {}
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// Resource access the underlying singleton of resources.
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func Resource() *resourceImpl {
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return r
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}
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// resourceImpl is a basic resource dependency for streamingnode server.
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// All utility on it is concurrent-safe and singleton.
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type resourceImpl struct {
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etcdClient *clientv3.Client
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replicateManagerClient replication.ReplicateManagerClient
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}
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// ETCD returns the etcd client.
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func (r *resourceImpl) ETCD() *clientv3.Client {
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return r.etcdClient
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}
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// ReplicateManagerClient returns the replicate manager client.
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func (r *resourceImpl) ReplicateManagerClient() replication.ReplicateManagerClient {
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return r.replicateManagerClient
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}
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// assertNotNil panics if the resource is nil.
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func assertNotNil(v interface{}) {
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iv := reflect.ValueOf(v)
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if !iv.IsValid() {
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panic("nil resource")
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}
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switch iv.Kind() {
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case reflect.Ptr, reflect.Slice, reflect.Map, reflect.Func, reflect.Interface:
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if iv.IsNil() {
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panic("nil resource")
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}
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}
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}
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