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stage.go
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stage.go
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package glacier
import (
"context"
"fmt"
"runtime/debug"
"sync"
"time"
"github.com/mylxsw/glacier/graceful"
"github.com/mylxsw/glacier/log"
"github.com/mylxsw/go-ioc"
"github.com/mylxsw/glacier/infra"
)
// initStage 框架初始化阶段
func (impl *framework) initStage(flagCtx infra.FlagContext) error {
if infra.DEBUG {
impl.pushGraphvizNode("initStage", false).Type = infra.GraphvizNodeTypeClusterStart
defer func() {
impl.pushGraphvizNode("initStage", false).Type = infra.GraphvizNodeTypeClusterEnd
}()
}
// 执行初始化钩子,用于在框架运行前执行一系列的前置操作
if impl.init != nil {
if infra.DEBUG {
impl.pushGraphvizNode("invoke init hook", false).Style = infra.GraphvizNodeStyleHook
}
if err := impl.init(flagCtx); err != nil {
return err
}
}
// 初始化日志实现
if impl.logger != nil {
if infra.DEBUG {
impl.pushGraphvizNode("init logger", false)
}
log.SetDefaultLogger(impl.logger)
}
return nil
}
// diBindStage 初始化依赖注入容器阶段
func (impl *framework) diBindStage(ctx context.Context, flagCtx infra.FlagContext) error {
if infra.DEBUG {
impl.pushGraphvizNode("diBindStage", false).Type = infra.GraphvizNodeTypeClusterStart
defer func() {
impl.pushGraphvizNode("diBindStage", false).Type = infra.GraphvizNodeTypeClusterEnd
}()
impl.pushGraphvizNode("create container", false)
}
impl.cc = ioc.NewWithContext(ctx)
impl.cc.MustBindValue(infra.VersionKey, impl.version)
impl.cc.MustBindValue(infra.StartupTimeKey, impl.startTime)
impl.cc.MustSingleton(impl.buildFlagContext(flagCtx))
impl.cc.MustSingletonOverride(func() infra.Resolver { return impl.cc })
impl.cc.MustSingletonOverride(func() infra.Binder { return impl.cc })
impl.cc.MustSingletonOverride(func() infra.Hook { return impl })
// 基本配置加载
impl.cc.MustSingletonOverride(ConfigLoader)
impl.cc.MustSingletonOverride(log.Default)
// 优雅停机
impl.cc.MustSingletonOverride(func(conf *Config) infra.Graceful {
if impl.gracefulBuilder != nil {
return impl.gracefulBuilder()
}
return graceful.NewWithDefault(conf.ShutdownTimeout)
})
// 注册全局对象
if infra.DEBUG {
impl.pushGraphvizNode("add singletons to container", false)
}
for _, i := range impl.singletons {
impl.cc.MustSingletonOverride(i)
}
if infra.DEBUG {
impl.pushGraphvizNode("add prototypes to container", false)
}
for _, i := range impl.prototypes {
impl.cc.MustPrototypeOverride(i)
}
// 完成预绑定对象的绑定
if impl.preBinder != nil {
if infra.DEBUG {
impl.pushGraphvizNode("invoke preBind hook", false).Style = infra.GraphvizNodeStyleHook
log.Debugf("[glacier] invoke pre-bind hook")
}
impl.preBinder(impl.cc)
}
return nil
}
func (impl *framework) Start(flagCtx infra.FlagContext) error {
// 全局异常处理
defer func() {
if err := recover(); err != nil {
if infra.DEBUG {
impl.pushGraphvizNode("global panic recover", false).Style = infra.GraphvizNodeStyleError
}
log.Criticalf("[glacier] application initialize failed with a panic, Err: %s, Stack: \n%s", err, debug.Stack())
}
if infra.DEBUG && infra.PrintGraph {
impl.pushGraphvizNode("shutdownStage", false).Type = infra.GraphvizNodeTypeClusterEnd
impl.nodeLock.Lock()
fmt.Println(impl.nodes.Draw())
impl.nodeLock.Unlock()
}
}()
ctx, cancel := context.WithCancel(context.Background())
impl.initStage(flagCtx)
impl.diBindStage(ctx, flagCtx)
return impl.cc.Resolve(func(resolver infra.Resolver, gf infra.Graceful, conf *Config) error {
gf.AddShutdownHandler(cancel)
// 设置服务关闭钩子
if impl.beforeServerStop != nil {
gf.AddShutdownHandler(func() {
if infra.DEBUG {
impl.pushGraphvizNode("invoke beforeServerStop hook", false).Style = infra.GraphvizNodeStyleHook
log.Debugf("[glacier] invoke beforeServerStop hook")
}
_ = impl.beforeServerStop(resolver)
})
}
impl.updateGlacierStatus(Initialized)
if infra.DEBUG {
impl.pushGraphvizNode("diBindStage", false).Type = infra.GraphvizNodeTypeClusterStart
defer func() {
impl.pushGraphvizNode("diBindStage", false).Type = infra.GraphvizNodeTypeClusterEnd
}()
}
var wg sync.WaitGroup
var bootStage = func() error {
if infra.DEBUG {
impl.pushGraphvizNode("bootStage", false).Type = infra.GraphvizNodeTypeClusterStart
defer func() {
impl.pushGraphvizNode("bootStage", false).Type = infra.GraphvizNodeTypeClusterEnd
}()
}
// 注册 Providers & Services
if err := impl.registerProviders(); err != nil {
return err
}
if err := impl.registerServices(); err != nil {
return err
}
// 启动 asyncRunners
stop := impl.startAsyncRunners()
impl.consumeAsyncJobs()
wg.Add(1)
go func() {
defer wg.Done()
<-stop
}()
// 初始化 Services
if err := impl.initServices(); err != nil {
return err
}
// 启动 Providers
if err := impl.bootProviders(); err != nil {
return err
}
// 启动 Daemon Providers
if err := impl.startDaemonProviders(ctx, &wg); err != nil {
return err
}
// 启动 Services
if err := impl.startServices(ctx, &wg); err != nil {
return err
}
return nil
}
if err := bootStage(); err != nil {
return err
}
impl.updateGlacierStatus(Started)
impl.readyStage(resolver, gf)
defer impl.shutdownHandler(conf, &wg)
if infra.DEBUG {
gf.AddPreShutdownHandler(func() {
impl.pushGraphvizNode("shutdownStage", false).Type = infra.GraphvizNodeTypeClusterStart
})
}
return gf.Start()
})
}
func (impl *framework) readyStage(resolver infra.Resolver, gf infra.Graceful) {
if infra.DEBUG {
impl.pushGraphvizNode("readyStage", false).Type = infra.GraphvizNodeTypeClusterStart
defer func() {
impl.pushGraphvizNode("readyStage", false).Type = infra.GraphvizNodeTypeClusterEnd
}()
}
var childGraphNodes []*infra.GraphvizNode
if len(impl.onServerReadyHooks) > 0 {
var wg sync.WaitGroup
wg.Add(len(impl.onServerReadyHooks))
var parentGraphNode *infra.GraphvizNode
if infra.DEBUG {
parentGraphNode = impl.pushGraphvizNode("invoke onServerReady hooks", true)
parentGraphNode.Style = infra.GraphvizNodeStyleHook
}
for _, hook := range impl.onServerReadyHooks {
if infra.DEBUG {
childGraphNodes = append(childGraphNodes, impl.pushGraphvizNode("invoke onServerReady hook: "+hook.name, true, parentGraphNode))
log.Debugf("[glacier] invoke onServerReady hook [%s]", hook.name)
}
go func(hook namedFunc) {
defer wg.Done()
if err := resolver.Resolve(hook.fn); err != nil {
log.Errorf("[glacier] onServerReady hook [%s] failed: %v", hook.name, err)
}
}(hook)
}
gf.AddShutdownHandler(wg.Wait)
}
if infra.DEBUG {
impl.pushGraphvizNode("launched", false, childGraphNodes...)
log.Debugf("[glacier] application launched successfully, took %s", time.Since(impl.startTime))
}
}
func (impl *framework) shutdownHandler(conf *Config, wg *sync.WaitGroup) {
if infra.DEBUG {
impl.pushGraphvizNode("shutdown", false)
}
if conf.ShutdownTimeout > 0 {
ok := make(chan interface{})
go func() {
wg.Wait()
ok <- struct{}{}
}()
select {
case <-ok:
if infra.DEBUG {
log.Debugf("[glacier] all modules has been stopped, application will exit safely")
}
case <-time.After(conf.ShutdownTimeout):
log.Errorf("[glacier] shutdown timeout, exit directly")
}
} else {
wg.Wait()
if infra.DEBUG {
log.Debugf("[glacier] all modules has been stopped")
}
}
}