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https://gitee.com/milvus-io/milvus.git
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582d2eec79
Related to #28861 Move session manager, worker manager to session package. Also renaming each manager to corresponding node name(datanode, indexnode). --------- Signed-off-by: Congqi Xia <congqi.xia@zilliz.com>
112 lines
2.7 KiB
Go
112 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 session
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import (
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"context"
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"fmt"
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"github.com/cockroachdb/errors"
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"github.com/milvus-io/milvus/internal/types"
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"github.com/milvus-io/milvus/pkg/util/lock"
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)
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var errDisposed = errors.New("client is disposed")
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// NodeInfo contains node base info
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type NodeInfo struct {
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NodeID int64
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Address string
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IsLegacy bool
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}
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// Session contains session info of a node
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type Session struct {
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lock.Mutex
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info *NodeInfo
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client types.DataNodeClient
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clientCreator DataNodeCreatorFunc
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isDisposed bool
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}
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// NewSession creates a new session
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func NewSession(info *NodeInfo, creator DataNodeCreatorFunc) *Session {
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return &Session{
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info: info,
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clientCreator: creator,
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}
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}
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// NodeID returns node id for session.
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// If internal info is nil, return -1 instead.
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func (n *Session) NodeID() int64 {
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if n.info == nil {
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return -1
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}
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return n.info.NodeID
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}
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// Address returns address of session internal node info.
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// If internal info is nil, return empty string instead.
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func (n *Session) Address() string {
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if n.info == nil {
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return ""
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}
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return n.info.Address
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}
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// GetOrCreateClient gets or creates a new client for session
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func (n *Session) GetOrCreateClient(ctx context.Context) (types.DataNodeClient, error) {
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n.Lock()
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defer n.Unlock()
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if n.isDisposed {
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return nil, errDisposed
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}
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if n.client != nil {
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return n.client, nil
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}
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if n.clientCreator == nil {
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return nil, fmt.Errorf("unable to create client for %s because of a nil client creator", n.info.Address)
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}
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err := n.initClient(ctx)
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return n.client, err
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}
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func (n *Session) initClient(ctx context.Context) (err error) {
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if n.client, err = n.clientCreator(ctx, n.info.Address, n.info.NodeID); err != nil {
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return
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}
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return nil
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}
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// Dispose releases client connection
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func (n *Session) Dispose() {
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n.Lock()
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defer n.Unlock()
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if n.client != nil {
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n.client.Close()
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n.client = nil
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}
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n.isDisposed = true
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}
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