| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.pulsar.broker.loadbalance; |
| |
| import static org.mockito.ArgumentMatchers.any; |
| import static org.mockito.Mockito.mockStatic; |
| import static org.testng.Assert.assertEquals; |
| import java.nio.file.Files; |
| import java.util.stream.Stream; |
| import lombok.extern.slf4j.Slf4j; |
| import org.mockito.MockedStatic; |
| import org.testng.annotations.Test; |
| |
| @Slf4j |
| @Test(groups = "broker") |
| public class LinuxInfoUtilsTest { |
| |
| /** |
| * simulate reading first line of /proc/stat to get total cpu usage. |
| */ |
| @Test |
| public void testGetCpuUsageForEntireHost(){ |
| try (MockedStatic<Files> filesMockedStatic = mockStatic(Files.class)) { |
| filesMockedStatic.when(() -> Files.lines(any())).thenReturn( |
| Stream.generate(() -> "cpu 317808 128 58637 2503692 7634 0 13472 0 0 0")); |
| long idle = 2503692 + 7634, total = 2901371; |
| LinuxInfoUtils.ResourceUsage resourceUsage = LinuxInfoUtils.ResourceUsage.builder() |
| .usage(total - idle) |
| .idle(idle) |
| .total(total).build(); |
| assertEquals(LinuxInfoUtils.getCpuUsageForEntireHost(), resourceUsage); |
| } |
| } |
| } |