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message_bus_setup.go
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message_bus_setup.go
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// Copyright 2021 Monoskope Authors
//
// 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.
package messagebus
import (
"os"
"github.com/finleap-connect/monoskope/pkg/eventsourcing"
esMessaging "github.com/finleap-connect/monoskope/pkg/eventsourcing/messaging"
)
func getMsgBusUrl() string {
var msgbusUrl string
if v := os.Getenv("BUS_URL"); v != "" {
msgbusUrl = v
}
return msgbusUrl
}
func getRabbitConf(name, msgbusPrefix string) (*esMessaging.RabbitEventBusConfig, error) {
rabbitConf, err := esMessaging.NewRabbitEventBusConfig(name, getMsgBusUrl(), msgbusPrefix)
if err != nil {
return nil, err
}
return rabbitConf, nil
}
func NewEventBusConsumer(name, msgbusPrefix string) (eventsourcing.EventBusConsumer, error) {
rabbitConf, err := getRabbitConf(name, msgbusPrefix)
if err != nil {
return nil, err
}
return NewEventBusConsumerFromConfig(rabbitConf)
}
func NewEventBusConsumerFromConfig(rabbitConf *esMessaging.RabbitEventBusConfig) (eventsourcing.EventBusConsumer, error) {
consumer, err := esMessaging.NewRabbitEventBusConsumer(rabbitConf)
if err != nil {
return nil, err
}
return consumer, nil
}
func NewEventBusPublisher(name, msgbusPrefix string) (eventsourcing.EventBusPublisher, error) {
rabbitConf, err := getRabbitConf(name, msgbusPrefix)
if err != nil {
return nil, err
}
publisher, err := esMessaging.NewRabbitEventBusPublisher(rabbitConf)
if err != nil {
return nil, err
}
return publisher, nil
}