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queue.go
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queue.go
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/*
Copyright 2020 The Knative 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 rabbit
import (
"fmt"
"regexp"
"knative.dev/eventing-rabbitmq/pkg/apis/sources/v1alpha1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"knative.dev/eventing-rabbitmq/third_party/pkg/apis/rabbitmq.com/v1beta1"
rabbitv1beta1 "knative.dev/eventing-rabbitmq/third_party/pkg/apis/rabbitmq.com/v1beta1"
)
type QueueArgs struct {
Name string
Namespace string
QueueName string
RabbitmqClusterReference *rabbitv1beta1.RabbitmqClusterReference
Owner metav1.OwnerReference
Labels map[string]string
DLXName *string
Source *v1alpha1.RabbitmqSource
BrokerUID string
}
func NewQueue(args *QueueArgs) *rabbitv1beta1.Queue {
// queue configurations for broker and trigger
durable := true
autoDelete := false
queueName := args.Name
vhost := "/"
if args.QueueName != "" {
queueName = args.QueueName
}
// queue configurations for source
if args.Source != nil {
durable = args.Source.Spec.QueueConfig.Durable
autoDelete = args.Source.Spec.QueueConfig.AutoDelete
queueName = args.Source.Spec.QueueConfig.Name
vhost = args.Source.Spec.Vhost
}
return &rabbitv1beta1.Queue{
ObjectMeta: metav1.ObjectMeta{
Namespace: args.Namespace,
Name: args.Name,
OwnerReferences: []metav1.OwnerReference{args.Owner},
Labels: args.Labels,
},
Spec: rabbitv1beta1.QueueSpec{
Name: queueName,
Vhost: vhost,
Durable: durable,
AutoDelete: autoDelete,
RabbitmqClusterReference: *args.RabbitmqClusterReference,
},
}
}
func NewPolicy(args *QueueArgs) *rabbitv1beta1.Policy {
return &rabbitv1beta1.Policy{
ObjectMeta: metav1.ObjectMeta{
Name: args.Name,
Namespace: args.Namespace,
OwnerReferences: []metav1.OwnerReference{args.Owner},
Labels: args.Labels,
},
Spec: v1beta1.PolicySpec{
Name: args.Name,
Priority: 1,
Pattern: fmt.Sprintf("^%s$", regexp.QuoteMeta(args.QueueName)),
ApplyTo: "queues",
Definition: &runtime.RawExtension{Raw: []byte(fmt.Sprintf(`{"dead-letter-exchange": %q}`, *args.DLXName))},
RabbitmqClusterReference: *args.RabbitmqClusterReference,
},
}
}
// NewBrokerDLXPolicy configures the broker dead letter exchange for trigger queues that does not have dlx defined
func NewBrokerDLXPolicy(args *QueueArgs) *rabbitv1beta1.Policy {
return &rabbitv1beta1.Policy{
ObjectMeta: metav1.ObjectMeta{
Name: args.Name,
Namespace: args.Namespace,
OwnerReferences: []metav1.OwnerReference{args.Owner},
Labels: args.Labels,
},
Spec: v1beta1.PolicySpec{
Name: args.Name,
Priority: 0, // lower priority then policies created for trigger queues to allow overwrite
Pattern: fmt.Sprintf("%s$", regexp.QuoteMeta(args.BrokerUID)),
ApplyTo: "queues",
Definition: &runtime.RawExtension{Raw: []byte(fmt.Sprintf(`{"dead-letter-exchange": %q}`, *args.DLXName))},
RabbitmqClusterReference: *args.RabbitmqClusterReference,
},
}
}