mirror of
https://github.com/cgrates/cgrates.git
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129 lines
3.8 KiB
Go
129 lines
3.8 KiB
Go
/*
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Real-time Online/Offline Charging System (OCS) for Telecom & ISP environments
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Copyright (C) ITsysCOM GmbH
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>
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*/
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package services
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import (
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"fmt"
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"sync"
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"github.com/cgrates/cgrates/config"
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"github.com/cgrates/cgrates/engine"
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"github.com/cgrates/cgrates/ers"
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"github.com/cgrates/cgrates/servmanager"
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"github.com/cgrates/cgrates/utils"
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)
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// NewEventReaderService returns the EventReader Service
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func NewEventReaderService(cfg *config.CGRConfig) *EventReaderService {
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return &EventReaderService{
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rldChan: make(chan struct{}, 1),
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cfg: cfg,
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stateDeps: NewStateDependencies([]string{utils.StateServiceUP, utils.StateServiceDOWN}),
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}
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}
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// EventReaderService implements Service interface
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type EventReaderService struct {
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mu sync.RWMutex
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cfg *config.CGRConfig
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ers *ers.ERService
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rldChan chan struct{}
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stopChan chan struct{}
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stateDeps *StateDependencies // channel subscriptions for state changes
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}
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// Start should handle the sercive start
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func (erS *EventReaderService) Start(shutdown *utils.SyncedChan, registry *servmanager.ServiceRegistry) (err error) {
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srvDeps, err := WaitForServicesToReachState(utils.StateServiceUP,
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[]string{
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utils.CommonListenerS,
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utils.ConnManager,
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utils.FilterS,
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utils.DB,
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},
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registry, erS.cfg.GeneralCfg().ConnectTimeout)
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if err != nil {
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return err
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}
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cl := srvDeps[utils.CommonListenerS].(*CommonListenerService).CLS()
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cms := srvDeps[utils.ConnManager].(*ConnManagerService)
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fs := srvDeps[utils.FilterS].(*FilterService)
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dbs := srvDeps[utils.DB].(*DataDBService)
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erS.mu.Lock()
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defer erS.mu.Unlock()
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// remake the stop chan
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erS.stopChan = make(chan struct{})
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// build the service
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erS.ers = ers.NewERService(dbs.DataManager(), erS.cfg, fs.FilterS(), cms.ConnManager())
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go erS.listenAndServe(erS.ers, erS.stopChan, erS.rldChan, shutdown)
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srv, err := engine.NewServiceWithPing(erS.ers, utils.ErSv1, utils.V1Prfx)
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if err != nil {
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return err
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}
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cl.RpcRegister(srv)
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cms.AddInternalConn(utils.ERs, srv)
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return
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}
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func (erS *EventReaderService) listenAndServe(ers *ers.ERService, stopChan, rldChan chan struct{}, shutdown *utils.SyncedChan) (err error) {
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if err = ers.ListenAndServe(stopChan, rldChan); err != nil {
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utils.Logger.Err(fmt.Sprintf("<%s> error: <%v>", utils.ERs, err))
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shutdown.CloseOnce()
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}
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return
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}
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// Reload handles the change of config
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func (erS *EventReaderService) Reload(_ *utils.SyncedChan, _ *servmanager.ServiceRegistry) (err error) {
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erS.mu.RLock()
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erS.rldChan <- struct{}{}
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erS.mu.RUnlock()
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return
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}
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// Shutdown stops the service
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func (erS *EventReaderService) Shutdown(registry *servmanager.ServiceRegistry) (err error) {
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erS.mu.Lock()
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defer erS.mu.Unlock()
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close(erS.stopChan)
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erS.ers = nil
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cl := registry.Lookup(utils.CommonListenerS).(*CommonListenerService).CLS()
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cl.RpcUnregisterName(utils.ErSv1)
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return
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}
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// ServiceName returns the service name
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func (erS *EventReaderService) ServiceName() string {
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return utils.ERs
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}
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// ShouldRun returns if the service should be running
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func (erS *EventReaderService) ShouldRun() bool {
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return erS.cfg.ERsCfg().Enabled
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}
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// StateChan returns signaling channel of specific state
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func (erS *EventReaderService) StateChan(stateID string) chan struct{} {
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return erS.stateDeps.StateChan(stateID)
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}
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