mirror of
https://gitee.com/milvus-io/milvus.git
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83 lines
2.1 KiB
Go
83 lines
2.1 KiB
Go
// Copyright (C) 2019-2020 Zilliz. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "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 distributed under the License
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// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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// or implied. See the License for the specific language governing permissions and limitations under the License.
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package dataservice
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import (
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"sync"
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"github.com/milvus-io/milvus/internal/types"
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)
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const retryTimes = 2
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type sessionManager interface {
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getOrCreateSession(addr string) (types.DataNode, error)
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releaseSession(addr string)
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release()
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}
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type clusterSessionManager struct {
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mu sync.RWMutex
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sessions map[string]types.DataNode
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dataClientCreator func(addr string) (types.DataNode, error)
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}
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func newClusterSessionManager(dataClientCreator func(addr string) (types.DataNode, error)) *clusterSessionManager {
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return &clusterSessionManager{
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sessions: make(map[string]types.DataNode),
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dataClientCreator: dataClientCreator,
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}
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}
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func (m *clusterSessionManager) createSession(addr string) error {
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cli, err := m.dataClientCreator(addr)
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if err != nil {
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return err
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}
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if err := cli.Init(); err != nil {
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return err
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}
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if err := cli.Start(); err != nil {
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return err
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}
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m.sessions[addr] = cli
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return nil
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}
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func (m *clusterSessionManager) getOrCreateSession(addr string) (types.DataNode, error) {
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if !m.hasSession(addr) {
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if err := m.createSession(addr); err != nil {
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return nil, err
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}
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}
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return m.sessions[addr], nil
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}
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func (m *clusterSessionManager) hasSession(addr string) bool {
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_, ok := m.sessions[addr]
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return ok
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}
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func (m *clusterSessionManager) releaseSession(addr string) {
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cli, ok := m.sessions[addr]
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if !ok {
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return
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}
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_ = cli.Stop()
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delete(m.sessions, addr)
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}
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func (m *clusterSessionManager) release() {
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for _, cli := range m.sessions {
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_ = cli.Stop()
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}
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}
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