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package service
import (
"sync"
"github.com/spiral/errors"
"github.com/spiral/roadrunner/v2/pkg/process"
"github.com/spiral/roadrunner/v2/plugins/config"
"github.com/spiral/roadrunner/v2/plugins/logger"
)
const PluginName string = "service"
type Plugin struct {
sync.Mutex
logger logger.Logger
cfg Config
// all processes attached to the service
processes []*Process
}
func (service *Plugin) Init(cfg config.Configurer, log logger.Logger) error {
const op = errors.Op("service_plugin_init")
if !cfg.Has(PluginName) {
return errors.E(errors.Disabled)
}
err := cfg.UnmarshalKey(PluginName, &service.cfg.Services)
if err != nil {
return errors.E(op, err)
}
// init default parameters if not set by user
service.cfg.InitDefault()
// save the logger
service.logger = log
return nil
}
func (service *Plugin) Serve() chan error {
errCh := make(chan error, 1)
// start processing
go func() {
// lock here, because Stop command might be invoked during the Serve
service.Lock()
defer service.Unlock()
service.processes = make([]*Process, 0, len(service.cfg.Services))
// for the every service
for k := range service.cfg.Services {
// create needed number of the processes
for i := 0; i < service.cfg.Services[k].ProcessNum; i++ {
// create processor structure, which will process all the services
service.processes = append(service.processes, NewServiceProcess(
service.cfg.Services[k].RemainAfterExit,
service.cfg.Services[k].ExecTimeout,
service.cfg.Services[k].RestartSec,
service.cfg.Services[k].Command,
service.logger,
errCh,
))
}
}
// start all processes
for i := 0; i < len(service.processes); i++ {
service.processes[i].start()
}
}()
return errCh
}
func (service *Plugin) Workers() []process.State {
service.Lock()
defer service.Unlock()
states := make([]process.State, 0, len(service.processes))
for i := 0; i < len(service.processes); i++ {
st, err := process.GeneralProcessState(service.processes[i].Pid, service.processes[i].rawCmd)
if err != nil {
continue
}
states = append(states, st)
}
return states
}
func (service *Plugin) Stop() error {
service.Lock()
defer service.Unlock()
if len(service.processes) > 0 {
for i := 0; i < len(service.processes); i++ {
service.processes[i].stop()
}
}
return nil
}
// Name contains service name.
func (service *Plugin) Name() string {
return PluginName
}
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