Java tutorial
/** * License Agreement for OpenSearchServer * * Copyright (C) 2010-2011 Emmanuel Keller / Jaeksoft * * http://www.open-search-server.com * * This file is part of OpenSearchServer. * * OpenSearchServer is free software: you can redistribute it and/or * modify it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * OpenSearchServer is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with OpenSearchServer. * If not, see <http://www.gnu.org/licenses/>. **/ package com.jaeksoft.searchlib; import java.io.IOException; import java.io.UnsupportedEncodingException; import java.util.Map.Entry; import java.util.Set; import org.apache.commons.io.FileSystemUtils; import org.apache.http.entity.mime.MultipartEntity; import org.apache.http.entity.mime.content.StringBody; import org.xml.sax.SAXException; import com.jaeksoft.searchlib.util.XmlWriter; import com.jaeksoft.searchlib.web.StartStopListener; import com.jaeksoft.searchlib.web.Version; public class Monitor { private Runtime runtime; public Monitor() { runtime = Runtime.getRuntime(); } public int getAvailableProcessors() { return runtime.availableProcessors(); } public long getFreeMemory() { return runtime.freeMemory(); } public long getMaxMemory() { return runtime.maxMemory(); } public long getTotalMemory() { return runtime.totalMemory(); } public String getVersion() { Version version = StartStopListener.getVersion(); if (version == null) return null; return version.toString(); } public double getMemoryRate() { return ((double) getFreeMemory() / (double) getTotalMemory()) * 100; } public Long getFreeDiskSpace() throws SecurityException, IOException, SearchLibException { try { long l = ClientFactory.INSTANCE.properties.getMaxStorage(); if (l > 0) { l -= ClientCatalog.getInstanceSize(); if (l < 0) l = 0; return l; } if (StartStopListener.OPENSEARCHSERVER_DATA_FILE.getClass().getDeclaredMethod("getFreeSpace") != null) return StartStopListener.OPENSEARCHSERVER_DATA_FILE.getFreeSpace(); } catch (NoSuchMethodException e) { } return FileSystemUtils.freeSpaceKb(StartStopListener.OPENSEARCHSERVER_DATA_FILE.getAbsolutePath()) * 1000; } public Long getTotalDiskSpace() throws SecurityException, IOException { try { long l = ClientFactory.INSTANCE.properties.getMaxStorage(); if (l > 0) return l; if (StartStopListener.OPENSEARCHSERVER_DATA_FILE.getClass().getDeclaredMethod("getTotalSpace") != null) return StartStopListener.OPENSEARCHSERVER_DATA_FILE.getTotalSpace(); } catch (NoSuchMethodException e) { } return FileSystemUtils.freeSpaceKb(StartStopListener.OPENSEARCHSERVER_DATA_FILE.getAbsolutePath()) * 1000; } public Double getDiskRate() throws SecurityException, IOException, SearchLibException { Long free = getFreeDiskSpace(); Long total = getTotalDiskSpace(); if (free == null || total == null) return null; return ((double) free / (double) total) * 100; } public double getApiWaitRate() { return ClientFactory.INSTANCE.properties.getApiWaitRate(); } public long getRequestPerMonthCount() { return ClientFactory.INSTANCE.properties.getRequestPerMonthCount(); } public final boolean isRequestPerMonthOver() { return getRequestPerMonthCount() > ClientFactory.INSTANCE.properties.getRequestPerMonth(); } public final boolean isRequestPerMonthUnder() { return !isRequestPerMonthOver(); } public final String getRequestPerMonthLabel() { StringBuilder sb = new StringBuilder(); sb.append(getRequestPerMonthCount()); sb.append(" / "); sb.append(ClientFactory.INSTANCE.properties.getRequestPerMonth()); return sb.toString(); } public String getDataDirectoryPath() { return StartStopListener.OPENSEARCHSERVER_DATA_FILE.getAbsolutePath(); } public Set<Entry<Object, Object>> getProperties() { return System.getProperties().entrySet(); } public int getIndexCount() throws SearchLibException { Set<ClientCatalogItem> clients = ClientCatalog.getClientCatalog(null); if (clients == null) return 0; return clients.size(); } public void writeXmlConfig(XmlWriter xmlWriter) throws SAXException, SearchLibException, SecurityException, IOException { xmlWriter.startElement("system"); xmlWriter.startElement("version", "value", getVersion()); xmlWriter.endElement(); xmlWriter.startElement("availableProcessors", "value", Integer.toString(getAvailableProcessors())); xmlWriter.endElement(); xmlWriter.startElement("freeMemory", "value", Long.toString(getFreeMemory()), "rate", Double.toString(getMemoryRate())); xmlWriter.endElement(); xmlWriter.startElement("maxMemory", "value", Long.toString(getMaxMemory())); xmlWriter.endElement(); xmlWriter.startElement("totalMemory", "value", Long.toString(getTotalMemory())); xmlWriter.endElement(); xmlWriter.startElement("indexCount", "value", Integer.toString(getIndexCount())); xmlWriter.endElement(); Double rate = getDiskRate(); if (rate == null) xmlWriter.startElement("freeDiskSpace", "value", getFreeDiskSpace().toString()); else xmlWriter.startElement("freeDiskSpace", "value", getFreeDiskSpace().toString(), "rate", rate.toString()); xmlWriter.endElement(); xmlWriter.startElement("dataDirectoryPath", "value", getDataDirectoryPath()); xmlWriter.endElement(); xmlWriter.startElement("apiWaitRate", "rate", Double.toString(getApiWaitRate())); xmlWriter.endElement(); xmlWriter.startElement("requestPerMonthCount", "value", Long.toString(getRequestPerMonthCount())); xmlWriter.endElement(); xmlWriter.endElement(); xmlWriter.startElement("properties"); for (Entry<Object, Object> prop : getProperties()) { xmlWriter.startElement("property", "name", prop.getKey().toString(), "value", prop.getValue().toString()); xmlWriter.endElement(); } xmlWriter.endElement(); } private final void addIfNotNull(MultipartEntity reqEntity, String name, String value) throws UnsupportedEncodingException { if (value == null) return; reqEntity.addPart(name.replace('.', '_'), new StringBody(value)); } public void writeToPost(MultipartEntity reqEntity) throws SearchLibException { try { addIfNotNull(reqEntity, "version", getVersion()); addIfNotNull(reqEntity, "availableProcessors", Integer.toString(getAvailableProcessors())); addIfNotNull(reqEntity, "freeMemory", Long.toString(getFreeMemory())); addIfNotNull(reqEntity, "freeMemoryRate", Double.toString(getMemoryRate())); addIfNotNull(reqEntity, "maxMemory", Long.toString(getMaxMemory())); addIfNotNull(reqEntity, "totalMemory", Long.toString(getTotalMemory())); addIfNotNull(reqEntity, "indexCount", Integer.toString(getIndexCount())); addIfNotNull(reqEntity, "freeDiskSpace", getFreeDiskSpace().toString()); Double rate = getDiskRate(); if (rate != null) addIfNotNull(reqEntity, "freeDiskRate", rate.toString()); addIfNotNull(reqEntity, "dataDirectoryPath", getDataDirectoryPath()); for (Entry<Object, Object> prop : getProperties()) addIfNotNull(reqEntity, "property_" + prop.getKey().toString(), prop.getValue().toString()); addIfNotNull(reqEntity, "apiWaitRate", Double.toString(getApiWaitRate())); } catch (SecurityException e) { throw new SearchLibException(e); } catch (IOException e) { throw new SearchLibException(e); } } }