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exchangers.go
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exchangers.go
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// Copyright 2018-2021 CERN
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// In applying this license, CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
package exchangers
import (
"fmt"
"github.com/cs3org/reva/v2/pkg/mentix/entity"
)
// Collection is an interface for exchanger collections.
type Collection interface {
entity.Collection
// Exchangers returns a vector of exchangers within the collection.
Exchangers() []Exchanger
}
type entityCollectionWrapper struct {
entities []entity.Entity
}
func (collection *entityCollectionWrapper) Entities() []entity.Entity {
return collection.entities
}
// AsEntityCollection transforms an exchanger collection into an entity collection.
func AsEntityCollection(collection Collection) entity.Collection {
wrapper := entityCollectionWrapper{}
for _, exchanger := range collection.Exchangers() {
wrapper.entities = append(wrapper.entities, exchanger)
}
return &wrapper
}
// StartExchangers starts the given exchangers.
func StartExchangers(collection Collection) error {
for _, exchanger := range collection.Exchangers() {
if err := exchanger.Start(); err != nil {
return fmt.Errorf("unable to start exchanger '%v': %v", exchanger.GetName(), err)
}
}
return nil
}
// StopExchangers stops the given exchangers.
func StopExchangers(collection Collection) {
for _, exchanger := range collection.Exchangers() {
exchanger.Stop()
}
}
// GetRequestExchangers gets all exchangers from a vector that implement the RequestExchanger interface.
func GetRequestExchangers(collection Collection) []RequestExchanger {
var reqExchangers []RequestExchanger
for _, exporter := range collection.Exchangers() {
if reqExchanger, ok := exporter.(RequestExchanger); ok {
reqExchangers = append(reqExchangers, reqExchanger)
}
}
return reqExchangers
}