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140 lines
3.1 KiB
140 lines
3.1 KiB
// +build linux
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/*
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* Minio Cloud Storage, (C) 2017 Minio, Inc.
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*
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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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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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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 cgroup
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import (
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"io/ioutil"
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"os"
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"testing"
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)
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// Testing parsing correctness for various process cgroup files.
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func TestProcCGroup(t *testing.T) {
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tmpPath, err := ioutil.TempFile("", "cgroup")
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if err != nil {
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t.Fatal(err)
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}
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defer os.Remove(tmpPath.Name())
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cgroup := `
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11:memory:/user.slice
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10:blkio:/user.slice
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9:hugetlb:/
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8:net_cls,net_prio:/
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7:perf_event:/
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6:pids:/user.slice/user-1000.slice
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5:devices:/user.slice
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4:cpuset:/
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3:cpu,cpuacct:/user.slice
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2:freezer:/
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1:name=systemd:/user.slice/user-1000.slice/session-1.scope
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`
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_, err = tmpPath.WriteString(cgroup)
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if err != nil {
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t.Fatal(err)
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}
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// Seek back to read from the beginning.
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tmpPath.Seek(0, 0)
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cg, err := parseProcCGroup(tmpPath)
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if err != nil {
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t.Fatal(err)
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}
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path := cg["memory"]
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if len(path) == 0 {
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t.Fatal("Path component cannot be empty")
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}
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if path != "/user.slice" {
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t.Fatal("Path component cannot be empty")
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}
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path = cg["systemd"]
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if path != "/user.slice/user-1000.slice/session-1.scope" {
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t.Fatal("Path component cannot be empty")
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}
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// Mixed cgroups with different group names.
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cgroup = `
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11:memory:/newtest/newtest
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10:blkio:/user.slice
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9:hugetlb:/
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8:net_cls,net_prio:/
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7:perf_event:/
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6:pids:/user.slice/user-1000.slice
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5:devices:/user.slice
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4:cpuset:/
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3:cpu,cpuacct:/newtest/newtest
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2:freezer:/
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1:name=systemd:/user.slice/user-1000.slice/session-1.scope
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`
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// Seek back to read from the beginning.
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tmpPath.Seek(0, 0)
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_, err = tmpPath.WriteString(cgroup)
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if err != nil {
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t.Fatal(err)
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}
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// Seek back to read from the beginning.
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tmpPath.Seek(0, 0)
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cg, err = parseProcCGroup(tmpPath)
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if err != nil {
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t.Fatal(err)
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}
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path = cg["memory"]
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if path != "/newtest/newtest" {
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t.Fatal("Path component cannot be empty")
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}
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path = cg["systemd"]
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if path != "/user.slice/user-1000.slice/session-1.scope" {
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t.Fatal("Path component cannot be empty")
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}
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}
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// Tests cgroup memory limit path construction.
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func TestMemoryLimitPath(t *testing.T) {
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testCases := []struct {
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cgroupPath string
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expectedPath string
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}{
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{
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cgroupPath: "/user.slice",
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expectedPath: "/sys/fs/cgroup/memory/user.slice/memory.limit_in_bytes",
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},
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{
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cgroupPath: "/docker/testing",
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expectedPath: "/sys/fs/cgroup/memory/memory.limit_in_bytes",
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},
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}
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for i, testCase := range testCases {
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actualPath := getMemoryLimitFilePath(testCase.cgroupPath)
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if actualPath != testCase.expectedPath {
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t.Fatalf("Test: %d: Expected: %s, got %s", i+1, testCase.expectedPath, actualPath)
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}
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}
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}
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