2a63ba1db6
Add a new utility file - util/cgroupdriver.go. Currently it only contains the public function GetCgroupDriverDocker(). The function uses 'docker info' to obtain the cgroup driver for Docker. On a later stage this file can contain more methods for different CRI. Use GetCgroupDriverDocker() in phases/kubelet/flags.go to conditionally set the 'cgroup-driver' argument. On error print a warning and don't set the argument value. Add unit tests in cgroupdriver_test.go.
69 lines
1.8 KiB
Go
69 lines
1.8 KiB
Go
/*
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Copyright 2018 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 util
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import (
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"testing"
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)
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func TestGetCgroupDriverDocker(t *testing.T) {
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testCases := []struct {
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name string
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info string
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expectedError bool
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}{
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{
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name: "valid: value is 'cgroupfs'",
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info: `Cgroup Driver: cgroupfs`,
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expectedError: false,
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},
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{
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name: "valid: value is 'systemd'",
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info: `Cgroup Driver: systemd`,
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expectedError: false,
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},
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{
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name: "invalid: missing 'Cgroup Driver' key and value",
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info: "",
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expectedError: true,
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},
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{
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name: "invalid: only a 'Cgroup Driver' key is present",
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info: `Cgroup Driver`,
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expectedError: true,
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},
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{
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name: "invalid: empty 'Cgroup Driver' value",
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info: `Cgroup Driver: `,
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expectedError: true,
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},
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{
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name: "invalid: unknown 'Cgroup Driver' value",
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info: `Cgroup Driver: invalid-value`,
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expectedError: true,
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},
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}
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for _, tc := range testCases {
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t.Run(tc.name, func(t *testing.T) {
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if _, err := getCgroupDriverFromDockerInfo(tc.info); (err != nil) != tc.expectedError {
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t.Fatalf("expected error: %v, saw: %v, error: %v", tc.expectedError, (err != nil), err)
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}
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})
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}
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}
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