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3bdfdda99b
Used fakeexec API from utils/exec/testing to test GetKubeletVersion and KubeletVersionCheck APIs without running kubelet.
45 lines
1.4 KiB
Go
45 lines
1.4 KiB
Go
/*
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Copyright 2017 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 preflight
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import (
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"fmt"
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"regexp"
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"strings"
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"k8s.io/kubernetes/pkg/util/version"
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utilsexec "k8s.io/utils/exec"
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)
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// GetKubeletVersion is helper function that returns version of kubelet available in $PATH
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func GetKubeletVersion(execer utilsexec.Interface) (*version.Version, error) {
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kubeletVersionRegex := regexp.MustCompile(`^\s*Kubernetes v((0|[1-9][0-9]*)\.(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)([-0-9a-zA-Z_\.+]*)?)\s*$`)
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command := execer.Command("kubelet", "--version")
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out, err := command.CombinedOutput()
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if err != nil {
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return nil, err
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}
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cleanOutput := strings.TrimSpace(string(out))
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subs := kubeletVersionRegex.FindAllStringSubmatch(cleanOutput, -1)
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if len(subs) != 1 || len(subs[0]) < 2 {
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return nil, fmt.Errorf("Unable to parse output from Kubelet: %q", cleanOutput)
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}
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return version.ParseSemantic(subs[0][1])
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}
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