mirror of
https://gitee.com/milvus-io/milvus.git
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107 lines
3.0 KiB
Go
107 lines
3.0 KiB
Go
/*
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* 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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*/
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package hookutil
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import (
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"fmt"
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"plugin"
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"sync"
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"go.uber.org/zap"
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"github.com/milvus-io/milvus-proto/go-api/v2/hook"
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"github.com/milvus-io/milvus/pkg/config"
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"github.com/milvus-io/milvus/pkg/log"
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"github.com/milvus-io/milvus/pkg/util/paramtable"
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)
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var (
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Hoo hook.Hook
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Extension hook.Extension
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initOnce sync.Once
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)
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func initHook() error {
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Hoo = DefaultHook{}
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Extension = DefaultExtension{}
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path := paramtable.Get().ProxyCfg.SoPath.GetValue()
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if path == "" {
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log.Info("empty so path, skip to load plugin")
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return nil
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}
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log.Info("start to load plugin", zap.String("path", path))
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p, err := plugin.Open(path)
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if err != nil {
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return fmt.Errorf("fail to open the plugin, error: %s", err.Error())
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}
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log.Info("plugin open")
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h, err := p.Lookup("MilvusHook")
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if err != nil {
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return fmt.Errorf("fail to the 'MilvusHook' object in the plugin, error: %s", err.Error())
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}
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var ok bool
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Hoo, ok = h.(hook.Hook)
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if !ok {
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return fmt.Errorf("fail to convert the `Hook` interface")
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}
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if err = Hoo.Init(paramtable.GetHookParams().SoConfig.GetValue()); err != nil {
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return fmt.Errorf("fail to init configs for the hook, error: %s", err.Error())
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}
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paramtable.GetHookParams().WatchHookWithPrefix("watch_hook", "", func(event *config.Event) {
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log.Info("receive the hook refresh event", zap.Any("event", event))
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go func() {
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soConfig := paramtable.GetHookParams().SoConfig.GetValue()
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log.Info("refresh hook configs", zap.Any("config", soConfig))
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if err = Hoo.Init(soConfig); err != nil {
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log.Panic("fail to init configs for the hook when refreshing", zap.Error(err))
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}
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}()
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})
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e, err := p.Lookup("MilvusExtension")
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if err != nil {
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return fmt.Errorf("fail to the 'MilvusExtension' object in the plugin, error: %s", err.Error())
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}
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Extension, ok = e.(hook.Extension)
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if !ok {
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return fmt.Errorf("fail to convert the `Extension` interface")
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}
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return nil
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}
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func InitOnceHook() {
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initOnce.Do(func() {
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err := initHook()
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if err != nil {
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logFunc := log.Warn
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if paramtable.Get().CommonCfg.PanicWhenPluginFail.GetAsBool() {
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logFunc = log.Panic
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}
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logFunc("fail to init hook",
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zap.String("so_path", paramtable.Get().ProxyCfg.SoPath.GetValue()),
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zap.Error(err))
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}
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})
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}
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