com.mgmtp.perfload.perfmon.cmd.PerfMonIo Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of perfload-perfmon Show documentation
mgm perfLoad perfMon
The newest version!
/*
 * Copyright (c) 2014 mgm technology partners GmbH
 *
 * Licensed 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 com.mgmtp.perfload.perfmon.cmd;

import static com.mgmtp.perfload.perfmon.util.PerfMonUtils.appendLineBreakIfNotEmpty;

import java.util.HashMap;
import java.util.Map;

import org.apache.commons.lang.text.StrBuilder;
import org.hyperic.sigar.FileSystem;
import org.hyperic.sigar.FileSystemUsage;
import org.hyperic.sigar.SigarException;
import org.hyperic.sigar.SigarProxy;

/**
 * @author rnaegele
 */
public class PerfMonIo extends BasePerfMonCommand {

	private static final String TYPE_IO_X = "io_";

	private final Map offsets = new HashMap();

	private FileSystem[] fileSystems;

	public PerfMonIo(final String separator) {
		super(separator);
	}

	@Override
	public String executeCommand(final SigarProxy sigar) throws SigarException {
		StrBuilder sb = new StrBuilder(200);

		if (fileSystems == null) {
			fileSystems = sigar.getFileSystemList();
		}
		if (offsets.isEmpty()) {
			for (FileSystem fileSystem : fileSystems) {
				if (fileSystem.getType() == FileSystem.TYPE_LOCAL_DISK) {
					String dirName = fileSystem.getDirName();
					FileSystemUsage usage = sigar.getFileSystemUsage(dirName);

					Offset offset = new Offset();
					offset.diskReads = usage.getDiskReads();
					offset.diskWrites = usage.getDiskWrites();
					offset.diskReadBytes = usage.getDiskReadBytes();
					offset.diskWriteBytes = usage.getDiskWriteBytes();
					offsets.put(dirName, offset);
				}
			}
		}

		for (int i = 0; i < fileSystems.length; ++i) {
			FileSystem fileSystem = fileSystems[i];
			if (fileSystem.getType() == FileSystem.TYPE_LOCAL_DISK) {
				appendLineBreakIfNotEmpty(sb);

				String dirName = fileSystem.getDirName();
				FileSystemUsage usage = sigar.getFileSystemUsage(dirName);
				Offset offset = offsets.get(dirName);

				sb.append(TYPE_IO_X + i);
				sb.append(separator);

				long diskReads = usage.getDiskReads();
				long diskWrites = usage.getDiskWrites();
				long diskReadBytes = usage.getDiskReadBytes();
				long diskWriteBytes = usage.getDiskWriteBytes();
				log.debug("r={}, w={}, rb={}, wb={}", diskReads, diskWrites, diskReadBytes, diskWriteBytes);

				sb.append(diskReads - offset.diskReads);
				sb.append(separator);
				sb.append(diskWrites - offset.diskWrites);
				sb.append(separator);
				sb.append(diskReadBytes - offset.diskReadBytes);
				sb.append(separator);
				sb.append(diskWriteBytes - offset.diskWriteBytes);

				sb.append(separator);
				sb.append(fileSystem.getDevName());
				sb.append(separator);
				sb.append(fileSystem.getDirName());

				offset.diskReads = diskReads;
				offset.diskWrites = diskWrites;
				offset.diskReadBytes = diskReadBytes;
				offset.diskWriteBytes = diskWriteBytes;
			}
		}

		return sb.toString();
	}

	private static class Offset {
		private long diskReads;
		private long diskWrites;
		private long diskReadBytes;
		private long diskWriteBytes;
	}
}