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bus_rabbitmq_matcher.go
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bus_rabbitmq_matcher.go
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// Copyright 2022 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 messaging
import (
"fmt"
evs "github.com/finleap-connect/monoskope/pkg/eventsourcing"
)
// rabbitMatcher implements the EventMatcher interface for rabbitmq
type rabbitMatcher struct {
routingKeyPrefix string
eventType string
aggregateType string
}
// Any matches any event.
func (m *rabbitMatcher) Any() evs.EventMatcher {
m.eventType = "*"
m.aggregateType = "*"
return m
}
// MatchEventType matches a specific event type, nil events never match.
func (m *rabbitMatcher) MatchEventType(eventType evs.EventType) evs.EventMatcher {
m.eventType = eventType.String()
return m
}
// MatchAggregateType matches a specific aggregate type, nil events never match.
func (m *rabbitMatcher) MatchAggregateType(aggregateType evs.AggregateType) evs.EventMatcher {
m.aggregateType = aggregateType.String()
return m
}
// generateRoutingKey returns the routing key for events
func (m *rabbitMatcher) generateRoutingKey() string {
return fmt.Sprintf("%s.%s.%s", m.routingKeyPrefix, m.aggregateType, m.eventType)
}