mirror of
https://github.com/ceph/ceph-csi.git
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58 lines
1.6 KiB
Go
58 lines
1.6 KiB
Go
/*
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Copyright 2022 The Kubernetes Authors.
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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 probe
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import (
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"fmt"
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"strconv"
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v1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/util/intstr"
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)
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func ResolveContainerPort(param intstr.IntOrString, container *v1.Container) (int, error) {
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port := -1
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var err error
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switch param.Type {
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case intstr.Int:
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port = param.IntValue()
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case intstr.String:
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if port, err = findPortByName(container, param.StrVal); err != nil {
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// Last ditch effort - maybe it was an int stored as string?
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if port, err = strconv.Atoi(param.StrVal); err != nil {
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return port, err
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}
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}
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default:
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return port, fmt.Errorf("intOrString had no kind: %+v", param)
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}
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if port > 0 && port < 65536 {
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return port, nil
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}
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return port, fmt.Errorf("invalid port number: %v", port)
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}
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// findPortByName is a helper function to look up a port in a container by name.
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func findPortByName(container *v1.Container, portName string) (int, error) {
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for _, port := range container.Ports {
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if port.Name == portName {
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return int(port.ContainerPort), nil
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}
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}
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return 0, fmt.Errorf("port %s not found", portName)
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}
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