mirror of https://github.com/k3s-io/k3s
44 lines
1.3 KiB
Go
44 lines
1.3 KiB
Go
/*
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Copyright 2014 Google Inc. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package constraint
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import (
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
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)
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// hostPortsConflict returns an array of host ports that at least two
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// containers attempt to expose. The array is empty if no such port
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// exists.
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func hostPortsConflict(pods []api.BoundPod) []int {
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hostPorts := map[int]struct{}{}
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conflictingPorts := []int{}
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for _, pod := range pods {
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for _, container := range pod.Spec.Containers {
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for _, port := range container.Ports {
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if port.HostPort == 0 {
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continue
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}
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if _, exists := hostPorts[port.HostPort]; exists {
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conflictingPorts = append(conflictingPorts, port.HostPort)
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}
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hostPorts[port.HostPort] = struct{}{}
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}
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}
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}
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return conflictingPorts
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}
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