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package boltdb
import (
"github.com/spiral/errors"
"github.com/spiral/roadrunner/v2/plugins/config"
"github.com/spiral/roadrunner/v2/plugins/kv"
"github.com/spiral/roadrunner/v2/plugins/logger"
)
const PluginName = "boltdb"
// Plugin BoltDB K/V storage.
type Plugin struct {
cfgPlugin config.Configurer
// logger
log logger.Logger
// stop is used to stop keys GC and close boltdb connection
stop chan struct{}
drivers uint
}
func (s *Plugin) Init(log logger.Logger, cfg config.Configurer) error {
if !cfg.Has(kv.PluginName) {
return errors.E(errors.Disabled)
}
s.stop = make(chan struct{})
s.log = log
s.cfgPlugin = cfg
return nil
}
// Serve is noop here
func (s *Plugin) Serve() chan error {
return make(chan error, 1)
}
func (s *Plugin) Stop() error {
if s.drivers > 0 {
for i := uint(0); i < s.drivers; i++ {
// send close signal to every driver
s.stop <- struct{}{}
}
}
return nil
}
func (s *Plugin) Provide(key string) (kv.Storage, error) {
const op = errors.Op("boltdb_plugin_provide")
st, err := NewBoltDBDriver(s.log, key, s.cfgPlugin, s.stop)
if err != nil {
return nil, errors.E(op, err)
}
// save driver number to release resources after Stop
s.drivers++
return st, nil
}
// Name returns plugin name
func (s *Plugin) Name() string {
return PluginName
}
// Available interface implementation
func (s *Plugin) Available() {}
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