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service-generic.go
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service-generic.go
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/*
* Copyright (c) 2018. Abstrium SAS <team (at) pydio.com>
* This file is part of Pydio Cells.
*
* Pydio Cells is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Pydio Cells is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Pydio Cells. If not, see <http://www.gnu.org/licenses/>.
*
* The latest code can be found at <https://pydio.com>.
*/
package service
import (
"context"
"github.com/micro/go-micro"
"github.com/pydio/cells/common"
"github.com/pydio/cells/common/log"
"github.com/pydio/cells/common/service/context"
"github.com/pydio/cells/common/service/defaults"
)
// WithGeneric adds a generic micro service handler to the current service
func WithGeneric(f func(context.Context, context.CancelFunc) (Runner, Checker, Stopper, error), opts ...micro.Option) ServiceOption {
return func(o *ServiceOptions) {
o.Micro = micro.NewService()
o.MicroInit = func(s Service) error {
name := s.Name()
ctx := servicecontext.WithServiceName(s.Options().Context, name)
o.Version = common.Version().String()
s.Options().Micro.Init(
micro.Client(defaults.NewClient()),
micro.Server(defaults.NewServer()),
micro.Registry(defaults.Registry()),
)
// context is always added last - so that there is no override
s.Options().Micro.Init(
opts...,
)
s.Options().Micro.Init(
micro.Context(ctx),
micro.Name(name),
micro.BeforeStart(func() error {
r, c, s, err := f(s.Options().Context, s.Options().Cancel)
if err != nil {
return err
}
// Adding context watcher
go func() {
<-ctx.Done()
s.Stop()
}()
go r.Run()
if err := Retry(c.Check); err != nil {
s.Stop()
}
return nil
}),
micro.AfterStart(func() error {
log.Logger(ctx).Info("started")
return nil
}),
micro.BeforeStop(func() error {
log.Logger(ctx).Info("stopping")
return nil
}),
micro.AfterStart(func() error {
return UpdateServiceVersion(s)
}),
)
// newTracer(name, &options)
newConfigProvider(s.Options().Micro)
newLogProvider(s.Options().Micro)
// We should actually offer that possibility
// proto.RegisterServiceHandler(s.Options().Micro.Server(), &Handler{s.Options().Micro})
return nil
}
}
}