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component.go
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component.go
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// MIT License
//
// Copyright (c) 2017 José Santos <henrique_1609@me.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
package mongo
import (
"github.com/CloudyKit/framework/app"
"github.com/CloudyKit/framework/container"
"github.com/CloudyKit/framework/ensure"
"gopkg.in/mgo.v2"
"reflect"
)
var SessionType = reflect.TypeOf((*mgo.Session)(nil))
var DatabaseType = reflect.TypeOf((*mgo.Database)(nil))
var CollectionType = reflect.TypeOf((*mgo.Collection)(nil))
func LoadSession(cdi *container.IoC) *mgo.Session {
return cdi.LoadType(SessionType).(*mgo.Session)
}
func LoadDatabase(cdi *container.IoC) *mgo.Database {
return cdi.LoadType(DatabaseType).(*mgo.Database)
}
func LoadCollection(cdi *container.IoC) *mgo.Collection {
return cdi.LoadType(CollectionType).(*mgo.Collection)
}
type Component struct {
URL, DB string
DialInfo *mgo.DialInfo
Session *mgo.Session
Copy, Master bool
}
type magicSession mgo.Session
func (m *magicSession) Provide(di *container.IoC) interface{} {
return (*mgo.Session)(m)
}
func (m *magicSession) Dispose() {
(*mgo.Session)(m).Close()
}
func (pp *Component) session() (*mgo.Session, error) {
if pp.DialInfo != nil {
return mgo.DialWithInfo(pp.DialInfo)
}
return mgo.Dial(pp.URL)
}
func (pp *Component) Bootstrap(a *app.App) {
if pp.Master {
if pp.Session == nil {
var err error
pp.Session, err = pp.session()
if err != nil {
panic(err)
}
}
if pp.Copy {
a.IoC.MapProviderFunc(SessionType, func(cdi *container.IoC) interface{} {
s := pp.Session.Copy()
cdi.MapProvider(SessionType, (*magicSession)(s))
return s
})
} else {
a.IoC.MapProviderFunc(SessionType, func(cdi *container.IoC) interface{} {
s := pp.Session.Clone()
cdi.MapProvider(SessionType, (*magicSession)(s))
return s
})
}
} else {
a.IoC.MapProviderFunc(SessionType, func(cdi *container.IoC) interface{} {
s, err := pp.session()
ensure.NilErr(err)
cdi.MapProvider(SessionType, (*magicSession)(s))
return s
})
}
a.IoC.MapProviderFunc(DatabaseType, func(cdi *container.IoC) interface{} {
return LoadSession(cdi).DB(pp.DB)
})
}