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// Copyright Istio 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 workloadinstances
import (
"github.com/apache/dubbo-go-pixiu/pilot/pkg/model"
"github.com/apache/dubbo-go-pixiu/pkg/config/labels"
)
// ByServiceSelector returns a predicate that matches workload instances
// of a given service.
func ByServiceSelector(namespace string, selector labels.Instance) func(*model.WorkloadInstance) bool {
return func(wi *model.WorkloadInstance) bool {
return wi.Namespace == namespace && selector.SubsetOf(wi.Endpoint.Labels)
}
}
// FindAllInIndex returns a list of workload instances in the index
// that match given predicate.
//
// The returned list is not ordered.
func FindAllInIndex(index Index, predicate func(*model.WorkloadInstance) bool) []*model.WorkloadInstance {
var instances []*model.WorkloadInstance
index.ForEach(func(instance *model.WorkloadInstance) {
if predicate(instance) {
instances = append(instances, instance)
}
})
return instances
}