HostManager.java
| Index Score | ||
|---|---|---|
 |
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org.furthurnet.furi |
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Furthurnet |
View: Reasons, Metrics, Source Code
These are the metrics that contribute to the Enerjy Score for this file, ranked by impact. So the metrics listed at the top influence the score to a greater extent that the metrics listed at the bottom.
| Metric | Description | |
|---|---|---|
| JAVA0143 | JAVA0143 Synchronized method |  |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| LOOPS | Number of loops | |
| FUNCTIONS | Number of function declarations | |
| CYCLOMATIC | Cyclomatic complexity | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| RETURNS | Number of return points from functions | |
| BLOCKS | Number of blocks | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| LOGICAL_LINES | Number of statements | |
| COMPARISONS | Number of comparison operators | |
| LOC | Lines of code | |
| OPERATORS | Number of operators | |
| EXITS | Procedure exits | |
| ELOC | Effective lines of code | |
| EXEC_COMMENTS | Comments in executable code | |
| PROGRAM_LENGTH | Halstead program length | |
| PARAMS | Number of formal parameter declarations | |
| WHITESPACE | Number of whitespace lines | |
| LINES | Number of lines in the source file | |
| SIZE | Size of the file in bytes | |
| UNIQUE_OPERANDS | Number of unique operands | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| OPERANDS | Number of operands | |
| LINE_COMMENT | Number of line comments | |
| JAVA0177 | JAVA0177 Variable declaration missing initializer | |
| JAVA0270 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| JAVA0079 | JAVA0079 Use of instance to reference static member | |
| JAVA0119 | JAVA0119 Control variable changed within body of for loop | |
| JAVA0081 | JAVA0081 Boolean literal in comparison | |
| JAVA0166 | JAVA0166 Generic exception caught | |
| UNIQUE_OPERATORS | Number of unique operators | |
| JAVA0130 | JAVA0130 Non-static method does not use instance fields | |
| JAVA0008 | JAVA0008 Empty catch block | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0259 | JAVA0259 Return of collection/array field | |
| JAVA0136 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0266 | JAVA0266 Use of System.out | |
| JAVA0174 | JAVA0174 Assigned local variable never used | |
| JAVA0035 | JAVA0035 Missing braces in for statement | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0043 | JAVA0043 Inner class does not use outer class | |
| JAVA0087 | JAVA0087 Use of Thread.sleep() | |
| JAVA0265 | JAVA0265 Use of Throwable.printStackTrace() | |
| JAVA0173 | JAVA0173 Unused method parameter | |
| JAVA0007 | JAVA0007 Should not declare public field | |
| JAVA0100 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| DECL_COMMENTS | Comments in declarations | |
| DOC_COMMENT | Number of javadoc comment lines | |
| NEST_DEPTH | Maximum nesting depth | |
| COMMENTS | Comment lines | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
/*
* FURI - A distributed peer-to-peer file sharing system.
* Copyright (C) 2000-2003 William W. Wong, Furthur Network
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.furthurnet.furi;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Hashtable;
import java.util.NoSuchElementException;
import java.util.Vector;
import org.furthurnet.datastructures.supporting.BandwidthUser;
import org.furthurnet.datastructures.supporting.SpeedCalculator;
import org.furthurnet.datastructures.supporting.SpeedManager;
public class HostManager
{
private Vector mHosts;
private Vector mConnectedHosts;
private IHostChanged mHostChangedListener = null;
private DataChanger mHostCountChangedListener = new DataChanger();
private DataChanger mStatusChangedListener = new DataChanger();
private int mStatHosts = 0;
private int mStatFiles = 0;
private long mStatSize = 0;
private String mStatSizeStr = "0";
private int mStatTakenCount = 0;
private int mStatMsgCount = 0;
private int mStatDropCount = 0;
private int mStatUploadCount = 0;
private int mStatDownloadCount = 0;
private Vector mHostsCaught = new Vector();
private Hashtable mHostsCaughtUnique = new Hashtable();
private boolean mHostsCaughtChanged = false;
private long mLastSaved = System.currentTimeMillis();
private long mRateTime0 = System.currentTimeMillis();
private int mRateBytes = 0;
private int mOldRate = 0;
private String[] starterHosts;
private boolean noMoreStats = false;
private int caughtHostIndex = 0;
public SpeedMonitor upstreamMonitor = new SpeedMonitor(BandwidthUser.UPSTREAM);
public SpeedMonitor downstreamMonitor = new SpeedMonitor(BandwidthUser.DOWNSTREAM);
HostManager() {
mHosts = new Vector();
mConnectedHosts = new Vector();
newRateSamplePeriod();
SpeedManager.addBandwidthUser(upstreamMonitor);
SpeedManager.addBandwidthUser(downstreamMonitor);
}
public void setNoMoreStats(boolean noMoreStats) {
this.noMoreStats = noMoreStats;
}
public boolean isNoMoreStats() {
return noMoreStats;
}
public void bootNetwork() {
Vector bootHosts = getBootHosts();
for (int cv = 0; cv < bootHosts.size(); cv++) {
Host host = new Host(this);
host.setType(Host.sTypeOutgoing);
host.setHostAddr((String)bootHosts.get(cv));
mHosts.addElement(host);
BootNetReadWorker bnrw = new BootNetReadWorker(host);
bnrw.run();
if (mHostsCaught.size() >= 1)
{
break;
}
}
// load default hosts
addStarterCacheProxy();
// load any cached host
loadHosts();
}
private String[] getHosts(File file) {
String[] hosts = null;
BufferedReader in = null;
try {
in = new BufferedReader(new FileReader(file));
Vector hostVector = new Vector();
String line = in.readLine();
while (line != null) {
// Skip comments
if (line.charAt(0) != (char)'#')
hostVector.add(line);
line = in.readLine();
}
in.close();
in = null;
hosts = new String[hostVector.size()];
for (int i = 0; i < hostVector.size(); i++)
hosts[i] = (String)hostVector.elementAt(i);
}
catch (IOException e) {
if (in != null) {
try {
in.close();
}
catch (IOException ex) {}
}
hosts = new String[0];
}
return hosts;
}
public void loadHosts() {
String[] hosts = getHosts(ServiceManager.getHostsFile());
for (int cv = 0; cv < hosts.length; cv++) {
if (validateHost(hosts[cv])){
addHostCaughtForced(hosts[cv],true,true);
}
}
// addStarterCacheProxy();
}
private Vector getBootHosts() {
return ServiceManager.getManager().getMainFrame().getBootHosts();
}
private String[] getStarterHosts() {
if (starterHosts == null || starterHosts.length == 0) {
starterHosts = new String[20];
// starter hosts is searched in reverse order. we want rs20 checked first
// so populate in **normal** fashion
for (int i = 0; i < starterHosts.length; i++) {
starterHosts[i] = "rs" + (i+1) + ".furthurnet.org:4200";
}
}
return starterHosts;
}
private boolean isStarterHost(Host host) {
String hostStr = host.toString();
for (int idx = 0; idx < starterHosts.length; idx++) {
if (hostStr.equalsIgnoreCase(starterHosts[idx]))
return true;
}
return false;
}
private void addStarterCacheProxy() {
String[] list = getStarterHosts();
for (int i = 0; i < list.length; i++) {
if (validateHost(list[i])){
addHostCaughtForced(list[i], false,true);
}
}
}
void removeStartHosts() {
String[] list = getStarterHosts();
for (int i = 0; i < list.length; i++) {
removeHostCaught(list[i]);
}
}
public Vector getHosts() {
return mHosts;
}
public synchronized void connectAllOutgoingHosts() {
for (int i = 0; i < mHosts.size(); i++) {
connectHost(i);
}
}
public synchronized void connectHost(int index) {
if (index >= mHosts.size())
return;
Host host = (Host)mHosts.elementAt(index);
if (host.getType() != Host.sTypeOutgoing)
return;
if (host.getSock() != null) {
int status = host.getStatus();
if (status == Host.sStatusError ||
status == Host.sStatusNotConnected ||
status == Host.sStatusTimeout ||
status == Host.sStatusDropped) {
disconnectHost(index);
}
else {
if (host.getAttemptReconnect()) {
try {
throw new Exception("Attempting reconnect on already connected host");
}
catch (Exception e) {
e.printStackTrace();
}
}
return;
}
}
new ReadWorker(host, 0);
}
public synchronized void disconnectHost(int index) {
if (index >= mHosts.size())
return;
Host host = (Host)mHosts.elementAt(index);
host.closeConnection();
}
public synchronized void disconnectFirstConnectedHost() {
if (mConnectedHosts.size() == 0)
return;
Host host = (Host)mConnectedHosts.elementAt(0);
host.closeConnection();
}
public synchronized void disconnectAll() {
for (int i = 0; i < mHosts.size(); i++) {
disconnectHost(i);
}
}
public synchronized void timeoutOutgoingHosts() {
for (int i = 0; i < mHosts.size(); i++) {
Host host = (Host)mHosts.elementAt(i);
if (host.isConnectingTimeout()) {
host.setStatus(Host.sStatusTimeout, "");
}
}
}
public synchronized int addOutgoingHost(String hostAddrStr) {
//
// Make sure it's a valid host
//
if (!validateHost(hostAddrStr)){
return - 1;
}
// Check for duplicate.
for (int i = 0; i < mHosts.size(); i++) {
Host host = (Host)mHosts.elementAt(i);
if (host.getType() == Host.sTypeOutgoing &&
host.getHostAddr().equals(hostAddrStr)) {
return -1;
}
}
int index = mHosts.size();
Host host = new Host(this);
host.setType(Host.sTypeOutgoing);
host.setHostAddr(hostAddrStr);
mHosts.addElement(host);
// Insert in the front so that will use it first in restart.
addHostCaughtForced(hostAddrStr,false,true);
try {
saveHosts();
}
catch (IOException e) {
System.out.println(e);
}
return index;
}
private boolean validateHost (String hostAddrStr) {
boolean retVal = true;
String ip;
int port;
if (hostAddrStr.indexOf(":") > 0) {
ip = hostAddrStr.substring(0, hostAddrStr.indexOf(":"));
port = Integer.parseInt(hostAddrStr.substring(hostAddrStr.indexOf(":") + 1));
if (port < 1) {
retVal = false;
}
if (isHostInvalid(ip)) {
retVal = false;
}
}
else {
// No port number, fuhgettaboutit.
retVal = false;
}
return retVal;
}
public synchronized void addIncomingHost(Host host) {
mHosts.addElement(host);
getHostChangedListener().hostChanged();
}
public synchronized void removeHost(int index) {
if (index >= mHosts.size())
return;
Host host = (Host)mHosts.elementAt(index);
host.closeConnection();
removeFromPushRoutingTable(null, index);
mHosts.removeElementAt(index);
}
private synchronized void removeFromPushRoutingTable(Host host, int index) {
if (host == null)
host = (Host)mHosts.elementAt(index);
ServiceManager.getMsgManager().removeFromPushRoutingTable(host);
}
public synchronized void removeAll() {
while (mHosts.size() > 0) {
removeHost(0);
}
}
public int getConnectedHostCount() {
return mConnectedHosts.size();
}
public synchronized int cleanupAndGetLiveHostCount() {
int count = 0;
int size = mHosts.size();
for (int i = 0; i < size; i++) {
Host host = (Host)mHosts.elementAt(i);
int status = host.getStatus();
if (status == Host.sStatusConnected ||
status == Host.sStatusConnecting ||
status == Host.sStatusAccepting) {
count++;
}
else {
if (ServiceManager.getCfg().mAutoCleanup &&
host.isErrorStatusExpired()) {
if (willAttemptReconnect(host)) {
host.incReconnectAttempts();
connectHost(i);
count++;
}
else {
removeHost(i);
size--;
i--;
}
}
}
}
return count;
}
public boolean willAttemptReconnect(Host host) {
if (host.getAttemptReconnect() && !isStarterHost(host) &&
host.getType() == Host.sTypeOutgoing) {
return true;
}
return false;
}
public synchronized Host getConnectedHost(int i) {
return (Host)mConnectedHosts.elementAt(i);
}
public synchronized void addConnectedHost(Host host) {
mConnectedHosts.addElement(host);
setHostCaughtConnectionFailed(host.getHostAddr(), false);
mHostCountChangedListener.dataChanged(mConnectedHosts);
mStatusChangedListener.dataChanged(null);
}
public synchronized void removeConnectedHost(Host host) {
removeFromPushRoutingTable(host, -1);
mConnectedHosts.removeElement(host);
mHostCountChangedListener.dataChanged(mConnectedHosts);
mStatusChangedListener.dataChanged(null);
}
// Forward broadcast messages to neighbors.
public synchronized void forwardMsg(IMsg msg, Host fromHost) {
if (decTTL(msg)) {
// fromHost.log("TTL expired " + msg);
return;
}
SendManager sendMgr = ServiceManager.getSendManager();
Host remoteHost;
for (int i = 0; i < mConnectedHosts.size(); i++) {
if ((remoteHost = (Host)mConnectedHosts.elementAt(i)) == fromHost) {
continue;
}
if (remoteHost.sendQueueInRed() || remoteHost.latencyInRed()) {
// Neighbor is too slow. Deprecate the neighbor.
// Don't send broadcast message to neighbor.
continue;
}
// Note that the msg is shared among all sending hosts.
sendMgr.queueMsgToSend(remoteHost, msg, false);
}
}
public synchronized void sendMsgToHosts(IMsg msg) {
SendManager sendMgr = ServiceManager.getSendManager();
for (int i = 0; i < mConnectedHosts.size(); i++) {
// Note that the msg is shared among all sending hosts.
if (msg.getHeader().getFunction() == MsgHeader.sQuery) {
sendMgr.queueMsgToSend((Host)mConnectedHosts.elementAt(i), msg, true);
}
else
sendMgr.queueMsgToSend((Host)mConnectedHosts.elementAt(i), msg, false);
}
}
public boolean decTTL(IMsg msg) {
MsgHeader header = msg.getHeader();
int ttl = header.getTTL() - 1;
if (ttl <= 0) {
// Expired
return true;
}
if (ttl > ServiceManager.getCfg().mNetMaxTTL) {
ttl = ServiceManager.getCfg().mNetMaxTTL;
}
header.setTTL(ttl);
header.setHopsTaken(header.getHopsTaken() + 1);
return false;
}
public synchronized void pingNeighbors() {
for (int i = 0; i < mConnectedHosts.size(); i++) {
((Host)mConnectedHosts.elementAt(i)).pingHost();
}
}
// CHECK ME
public synchronized void checkConnections() {
for (int i = 0; i < mConnectedHosts.size(); i++) {
Host host = (Host)mConnectedHosts.elementAt(i);
if (host.tooManyDropPackets()) {
host.setStatus(Host.sStatusDropped, "Too many dropped packets");
host.closeConnection();
continue;
}
if (host.deprecatedTooLong()) {
host.setStatus(Host.sStatusDropped, "Deprecated too long");
host.closeConnection();
continue;
}
/*
if (host.tooMuchLatency()) {
host.closeConnection();
continue;
}
if (host.sendQueueTooLong()) {
host.closeConnection();
continue;
}
*/
}
}
public synchronized void saveHosts() throws IOException {
File file = ServiceManager.getHostsFile();
BufferedWriter bw = new BufferedWriter(new FileWriter(file));
for (int i = 0; i < mHostsCaught.size(); i++) {
String host = (String)mHostsCaught.elementAt(i);
bw.write(host);
bw.newLine();
}
bw.close();
mHostsCaughtChanged = false;
mLastSaved = System.currentTimeMillis();
}
public synchronized void autoSaveHosts() {
if (mHostsCaughtChanged) {
// Wait for at least 30 seconds before saving.
if ((System.currentTimeMillis() - mLastSaved) > 30000) {
try {
saveHosts();
}
catch (Exception e) {
System.out.println(e);
}
}
}
}
public void setHostChangedListener(IHostChanged listener) {
mHostChangedListener = listener;
}
public void addHostCountChangedListener(IDataChangedListener listener) {
mHostCountChangedListener.addListener(listener);
}
public void addStatusChangedListener(IDataChangedListener listener) {
mStatusChangedListener.addListener(listener);
}
public IHostChanged getHostChangedListener() {
return mHostChangedListener;
}
public int getStatHosts() {
return mStatHosts;
}
public void setStatHosts(int val) {
mStatHosts = val;
}
public synchronized void incStatHosts(int amount) {
mStatHosts += amount;
}
public int getStatFiles() {
return mStatFiles;
}
public void setStatFiles(int val) {
mStatFiles = val;
}
public synchronized void incStatFiles(int amount) {
if (amount < 0)
return;
mStatFiles += amount;
}
public long getStatSize() {
return mStatSize;
}
public void setStatSize(long val) {
mStatSize = val;
updateStatSizeStr();
}
public synchronized void incStatSize(long amount) {
// Sounds bogos. Ignore
if (amount < 0)
return;
mStatSize += amount;
updateStatSizeStr();
}
public String getStatSizeStr() {
return mStatSizeStr;
}
private void updateStatSizeStr() {
mStatSizeStr = StrUtil.formatSizeBytes(mStatSize << 10);
}
public int getStatTakenCount() {
return mStatTakenCount;
}
public void setStatTakenCount(int val) {
mStatTakenCount = val;
}
public synchronized void incStatTakenCount(int amount) {
mStatTakenCount += amount;
}
public int getStatMsgCount() {
return mStatMsgCount;
}
public void setStatMsgCount(int val) {
mStatMsgCount = val;
}
public synchronized void incStatMsgCount(int amount) {
mStatMsgCount += amount;
}
public int getStatDropCount() {
return mStatDropCount;
}
public void setStatDropCount(int val) {
mStatDropCount = val;
}
public synchronized void incStatDropCount(int amount) {
mStatDropCount += amount;
}
public int getStatUploadCount() {
return mStatUploadCount;
}
public void setStatUploadCount(int val) {
mStatUploadCount = val;
}
public synchronized void incStatUploadCount(int amount) {
mStatUploadCount += amount;
}
public int getStatDownloadCount() {
return mStatDownloadCount;
}
public void setStatDownloadCount(int val) {
mStatDownloadCount = val;
mStatusChangedListener.dataChanged(null);
}
public synchronized void incStatDownloadCount(int amount) {
mStatDownloadCount += amount;
mStatusChangedListener.dataChanged(null);
}
public void resetStat() {
mStatHosts = 0;
mStatFiles = 0;
mStatSize = 0;
mStatSizeStr = "0";
mStatTakenCount = 0;
mStatMsgCount = 0;
mStatDropCount = 0;
mStatUploadCount = 0;
mStatDownloadCount = 0;
newRateSamplePeriod();
}
public void incBytesCount(int count) {
mRateBytes += count;
totalBytes += count;
}
private double totalBytes;
private long startTime = System.currentTimeMillis();
public double getTotalBytes() {
//System.out.println("total =" +totalBytes);
return (totalBytes/1024) / ((System.currentTimeMillis() - startTime)/1000);
}
public final int getRate() {
if (mRateBytes == 0) {
// No date in new sampling period. Use old rate for continuation.
return mOldRate;
}
return mRateBytes * 1000 / (int)(System.currentTimeMillis() - mRateTime0 + 1);
}
public void newRateSamplePeriod() {
mOldRate = getRate();
mRateBytes = 0;
mRateTime0 = System.currentTimeMillis();
}
public Vector getHostsCaught() {
return mHostsCaught;
}
public int incCaughtHostIndex() {
return caughtHostIndex++;
}
public void setCaughtHostIndex(int index) {
caughtHostIndex = index;
}
/*
public synchronized void insertHostCaught(String host)
{
if (mHostsCaughtUnique.get(host) == null)
{
mHostsCaught.insertElementAt(host, 0);
mHostsCaughtUnique.put(host, Boolean.valueOf(false));
}
}
*/
protected synchronized boolean isBootHost(String host) {
Vector bootHosts = getBootHosts();
int size = bootHosts.size();
for (int cv = 0; cv < size; cv++) {
if (((String)(bootHosts.elementAt(cv))).equalsIgnoreCase(host))
return true;
}
return false;
}
public synchronized boolean addHostCaught(String host) {
boolean retVal = false;
if (validateHost(host)){
if (mHostsCaught.size() > ServiceManager.getCfg().mNetMaxHostToCatch)
{
String host2 = (String)mHostsCaught.get(mHostsCaught.size()-1);
removeHostCaught(host2);
}
addHostCaughtForced(host,false,true);
retVal = true;
}
return retVal;
}
public synchronized void addHostCaughtForced(String host, boolean end) {
addHostCaughtForced( host, end, false);
}
private synchronized void addHostCaughtForced(String host, boolean end, boolean validated) {
if (validated || validateHost(host)){
if (mHostsCaughtUnique.get(host) == null) {
if (end)
mHostsCaught.add(host);
else
mHostsCaught.add(0,host);
mHostsCaughtUnique.put(host, Boolean.valueOf(false));
}
}
}
public synchronized void removeHostCaught(String hostStr) {
Host host = null;
for (int idx = 0; idx < mHosts.size(); idx++) {
Host tmp = (Host)mHosts.elementAt(idx);
if (hostStr.equals(tmp.getHostAddr()))
host = tmp;
}
if (host != null) {
removeFromPushRoutingTable(host, -1);
}
mHostsCaught.removeElement(hostStr);
mHostsCaughtUnique.remove(hostStr);
}
public synchronized boolean addAndSaveHostCaught(String host) {
if (addHostCaught(host) == false){
return false;
}
mHostsCaughtChanged = true;
return true;
}
public void setHostCaughtConnectionFailed(String host, boolean failed) {
//mHostsCaughtUnique.put(host, new Boolean(failed));
removeHostCaught(host);
}
public synchronized void resetHostsCaught() {
mHostsCaught.removeAllElements();
mHostsCaughtUnique.clear();
//addStarterCacheProxy();
}
public int throttleControl(int currSleep, int maxSleep, int currRate, int maxRate) {
if (currRate > maxRate) {
// Sleep more to slow down reading in new message.
currSleep = currSleep * 2;
if (currSleep > maxSleep)
currSleep = maxSleep;
}
else if (currRate < maxRate) {
// Sleep less to speed up reading in new message.
currSleep = (int)((float)currSleep * 2 / 3);
if (currSleep == 0)
currSleep = 1; // avoid 0; otherwise multiplication won't work.
}
try {
Thread.sleep(currSleep);
}
catch (Exception e) {}
return currSleep;
}
public boolean isHostConnected(Host host)
{
for (int idx = 0; idx < mConnectedHosts.size(); idx++) {
if (host == (Host)mConnectedHosts.elementAt(idx)) {
return true;
}
}
return false;
}
public boolean isHostIgnored(String ip) {
return isIpInHosts(ip, ServiceManager.getCfg().mNetIgnoredHosts);
}
public boolean isHostInvalid(String ip) {
return isIpInHosts(ip, ServiceManager.getCfg().mNetInvalidHosts);
}
public boolean isHostFiltered(String ip) {
return (ServiceManager.getCfg().mApplyFilterdHosts &&
isIpInHosts(ip, ServiceManager.getCfg().mFilteredSearchHosts));
}
public boolean isIpInHosts(String ip, Vector hosts) {
int size = hosts.size();
String[] parts;
int j;
try {
parts = Cfg.ip2parts(ip);
}
catch (NoSuchElementException nse) {
// Must have been a hostname, not an IP address...
return false;
}
for (int i = 0; i < size; i++) {
String[] partmask = (String[])hosts.elementAt(i);
for (j = 0; j < 4; j++) {
if (partmask[j].equals("*"))
continue;
if (!partmask[j].equals(parts[j]))
break;
}
if (j == 4)
return true;
}
return false;
}
public class SpeedMonitor implements BandwidthUser {
private int type;
private SpeedCalculator calc;
public SpeedMonitor(int _type) {
type = _type;
calc = new SpeedCalculator();
}
public int getBandwidthType() {
return type;
}
public double getActualSpeed() {
return calc.getSpeed();
}
public void addBytes(int bytes) {
calc.addBytes(bytes);
}
}
}
The table below shows all metrics for HostManager.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 172.00 | Number of blocks | |
| BLOCK_COMMENT | 38.00 | Number of block comment lines | |
| COMMENTS | 67.00 | Comment lines | |
| COMMENT_DENSITY | 0.13 | Comment density | |
| COMPARISONS | 96.00 | Number of comparison operators | |
| CYCLOMATIC | 192.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 4.00 | Comments in declarations | |
| DOC_COMMENT | 0.00 | Number of javadoc comment lines | |
| ELOC | 509.00 | Effective lines of code | |
| EXEC_COMMENTS | 24.00 | Comments in executable code | |
| EXITS | 96.00 | Procedure exits | |
| FUNCTIONS | 93.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 92.08 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 180.00 | Interface complexity | |
| JAVA0001 | 0.00 | JAVA0001 Package name does not contain only lower case letters | |
| JAVA0002 | 0.00 | JAVA0002 Package name does not begin with a top level domain name or country code | |
| JAVA0003 | 0.00 | JAVA0003 Minimize use of on-demand (.*) imports | |
| JAVA0004 | 0.00 | JAVA0004 Unnecessary import from java.lang | |
| JAVA0005 | 0.00 | JAVA0005 Imports not in specified order | |
| JAVA0006 | 0.00 | JAVA0006 Empty finally block | |
| JAVA0007 | 2.00 | JAVA0007 Should not declare public field | |
| JAVA0008 | 2.00 | JAVA0008 Empty catch block | |
| JAVA0009 | 0.00 | JAVA0009 Protected member in final class | |
| JAVA0010 | 0.00 | JAVA0010 Non-instantiable class does not contain a non-private static member | |
| JAVA0011 | 0.00 | JAVA0011 Abstract class does not contain an abstract method | |
| JAVA0012 | 0.00 | JAVA0012 Non-constructor method with same name as declaring class | |
| JAVA0013 | 0.00 | JAVA0013 Non-blank final field is not static | |
| JAVA0014 | 0.00 | JAVA0014 Class with only static members has non-private constructor | |
| JAVA0015 | 0.00 | JAVA0015 Package class contains public nested type | |
| JAVA0016 | 0.00 | JAVA0016 Abstract class contains public constructor | |
| JAVA0017 | 0.00 | JAVA0017 Class name does not have required form | |
| JAVA0018 | 0.00 | JAVA0018 Method name does not have required form | |
| JAVA0019 | 0.00 | JAVA0019 Interface name does not have required form | |
| JAVA0020 | 0.00 | JAVA0020 Field name does not have required form | |
| JAVA0021 | 0.00 | JAVA0021 Interface method name does not have required form | |
| JAVA0022 | 0.00 | JAVA0022 Static final field name does not have required form | |
| JAVA0023 | 0.00 | JAVA0023 Empty finalize method | |
| JAVA0024 | 0.00 | JAVA0024 Empty class | |
| JAVA0025 | 0.00 | JAVA0025 Method override is empty | |
| JAVA0026 | 0.00 | JAVA0026 Finalize method with parameters | |
| JAVA0029 | 0.00 | JAVA0029 Private method not used | |
| JAVA0030 | 0.00 | JAVA0030 Private field not used | |
| JAVA0031 | 0.00 | JAVA0031 Case statement not properly closed | |
| JAVA0032 | 0.00 | JAVA0032 Switch statement missing default | |
| JAVA0033 | 0.00 | JAVA0033 default: not last case in switch statement | |
| JAVA0034 | 20.00 | JAVA0034 Missing braces in if statement | |
| JAVA0035 | 1.00 | JAVA0035 Missing braces in for statement | |
| JAVA0036 | 0.00 | JAVA0036 Missing braces in while statement | |
| JAVA0038 | 0.00 | JAVA0038 Non-case label in switch statement | |
| JAVA0039 | 0.00 | JAVA0039 Break statement with label | |
| JAVA0040 | 0.00 | JAVA0040 Switch statement contains N cases (maximum: M) | |
| JAVA0041 | 0.00 | JAVA0041 Nested synchronized block | |
| JAVA0042 | 0.00 | JAVA0042 Empty synchronized statement | |
| JAVA0043 | 1.00 | JAVA0043 Inner class does not use outer class | |
| JAVA0044 | 0.00 | JAVA0044 Serializable class with no instance variables | |
| JAVA0045 | 0.00 | JAVA0045 Serializable class with only transient fields | |
| JAVA0046 | 0.00 | JAVA0046 Name of class not derived from Exception ends with 'Exception' | |
| JAVA0047 | 0.00 | JAVA0047 Serializable class derives from invalid base class | |
| JAVA0048 | 0.00 | JAVA0048 Name of class derived from Exception does not end with 'Exception' | |
| JAVA0049 | 0.00 | JAVA0049 Nested block at depth N (maximum: M) | |
| JAVA0050 | 0.00 | JAVA0050 Class derives from java.lang.Error | |
| JAVA0051 | 0.00 | JAVA0051 Class derives from java.lang.RuntimeException | |
| JAVA0052 | 0.00 | JAVA0052 Class derives from java.lang.Throwable | |
| JAVA0053 | 0.00 | JAVA0053 Unused label | |
| JAVA0054 | 0.00 | JAVA0054 Inheritance depth N exceeds maximum M | |
| JAVA0055 | 0.00 | JAVA0055 Class should be interface | |
| JAVA0056 | 0.00 | JAVA0056 Unnecessary abstract modifier for interface or annotation | |
| JAVA0057 | 0.00 | JAVA0057 Unnecessary default constructor | |
| JAVA0058 | 0.00 | JAVA0058 Constructor calls super() | |
| JAVA0059 | 0.00 | JAVA0059 Method override only calls super() | |
| JAVA0061 | 0.00 | JAVA0061 Inaccessible member in anonymous class | |
| JAVA0062 | 0.00 | JAVA0062 Public class missing public member or protected constructor | |
| JAVA0063 | 0.00 | JAVA0063 Identifier name should not contain '$' | |
| JAVA0064 | 0.00 | JAVA0064 N variations of identifier name (maximum: M) | |
| JAVA0065 | 0.00 | JAVA0065 Unnecessary final modifier for method in final class | |
| JAVA0066 | 0.00 | JAVA0066 Unnecessary modifier for interface nested type | |
| JAVA0067 | 0.00 | JAVA0067 Array descriptor on identifier name | |
| JAVA0068 | 0.00 | JAVA0068 Modifiers not declared in recommended order | |
| JAVA0071 | 0.00 | JAVA0071 Strings compared with == | |
| JAVA0073 | 1.00 | JAVA0073 Integer division in floating-point context | |
| JAVA0074 | 0.00 | JAVA0074 Use of Object.notify() | |
| JAVA0075 | 0.00 | JAVA0075 Method parameter hides field | |
| JAVA0076 | 2.00 | JAVA0076 Use of magic number | |
| JAVA0077 | 0.00 | JAVA0077 Private field not used in declaring class | |
| JAVA0078 | 0.00 | JAVA0078 Floating point values compared with == | |
| JAVA0079 | 5.00 | JAVA0079 Use of instance to reference static member | |
| JAVA0080 | 0.00 | JAVA0080 Import declaration not used | |
| JAVA0081 | 1.00 | JAVA0081 Boolean literal in comparison | |
| JAVA0082 | 1.00 | JAVA0082 Unnecessary widening cast | |
| JAVA0083 | 0.00 | JAVA0083 Unnecessary instanceof test | |
| JAVA0084 | 1.00 | JAVA0084 Should use compound assignment operator | |
| JAVA0085 | 0.00 | JAVA0085 Use of sun.* class | |
| JAVA0087 | 1.00 | JAVA0087 Use of Thread.sleep() | |
| JAVA0089 | 0.00 | JAVA0089 Use of restricted package | |
| JAVA0092 | 0.00 | JAVA0092 Use of restricted type | |
| JAVA0093 | 0.00 | JAVA0093 Redundant assignment | |
| JAVA0094 | 0.00 | JAVA0094 Field hides a superclass field | |
| JAVA0095 | 0.00 | JAVA0095 Uninitialized private field | |
| JAVA0096 | 0.00 | JAVA0096 Field in nested class hides outer field | |
| JAVA0098 | 0.00 | JAVA0098 Minimize use of implicit field initializers | |
| JAVA0100 | 1.00 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| JAVA0101 | 0.00 | JAVA0101 Unnecessary modifier for field in interface | |
| JAVA0102 | 0.00 | JAVA0102 Last statement in finalize() not super.finalize() | |
| JAVA0103 | 0.00 | JAVA0103 Explicit call to finalize() | |
| JAVA0104 | 0.00 | JAVA0104 finalize() only calls super.finalize() | |
| JAVA0105 | 0.00 | JAVA0105 Duplicate import declaration | |
| JAVA0106 | 0.00 | JAVA0106 Unnecessary import from current package | |
| JAVA0108 | 0.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 0.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 0.00 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0111 | 0.00 | JAVA0111 Incorrect javadoc: @return tag for void method | |
| JAVA0112 | 0.00 | JAVA0112 Incorrect javadoc: no exception 'exception' in throws | |
| JAVA0113 | 0.00 | JAVA0113 Incorrect javadoc: no @author tag | |
| JAVA0114 | 0.00 | JAVA0114 Incorrect javadoc: no @version tag | |
| JAVA0115 | 0.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 2.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 80.00 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0118 | 2.00 | JAVA0118 Missing javadoc: type 'type' | |
| JAVA0119 | 2.00 | JAVA0119 Control variable changed within body of for loop | |
| JAVA0123 | 0.00 | JAVA0123 Use all three components of for loop | |
| JAVA0125 | 0.00 | JAVA0125 Continue statement with label | |
| JAVA0126 | 0.00 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0128 | 0.00 | JAVA0128 Public constructor in non-public class | |
| JAVA0130 | 2.00 | JAVA0130 Non-static method does not use instance fields | |
| JAVA0131 | 0.00 | JAVA0131 Compatible method does not override base | |
| JAVA0132 | 0.00 | JAVA0132 Method overload with compatible signature | |
| JAVA0133 | 0.00 | JAVA0133 Non-synchronized method overrides synchronized method | |
| JAVA0135 | 0.00 | JAVA0135 Only one of Object.equals and Object.hashCode defined: missing 'method' | |
| JAVA0136 | 1.00 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0137 | 0.00 | JAVA0137 Non-abstract class missing constructor | |
| JAVA0138 | 0.00 | JAVA0138 N parameters defined for method (maximum: M) | |
| JAVA0139 | 0.00 | JAVA0139 Definition of main other than public static void main(java.lang.String[]) | |
| JAVA0141 | 0.00 | JAVA0141 Unnecessary modifier for method in interface | |
| JAVA0143 | 36.00 | JAVA0143 Synchronized method | |
| JAVA0144 | 0.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 0.00 | JAVA0145 Tab character used in source file | |
| JAVA0150 | 0.00 | JAVA0150 java.lang.Error (or subclass) thrown | |
| JAVA0153 | 0.00 | JAVA0153 Inefficient conversion of integer to string | |
| JAVA0159 | 0.00 | JAVA0159 Inefficient conversion of string to integer | |
| JAVA0160 | 0.00 | JAVA0160 Method does not throw specified exception | |
| JAVA0161 | 0.00 | JAVA0161 Conditional wait() not in loop | |
| JAVA0163 | 0.00 | JAVA0163 Empty statement | |
| JAVA0165 | 0.00 | JAVA0165 Conflicting return statement in finally block | |
| JAVA0166 | 3.00 | JAVA0166 Generic exception caught | |
| JAVA0167 | 0.00 | JAVA0167 ThreadDeath not rethrown | |
| JAVA0169 | 0.00 | JAVA0169 Unnecessary catch block: exception 'exception' | |
| JAVA0170 | 0.00 | JAVA0170 Caught exception not derived from java.lang.Exception | |
| JAVA0171 | 0.00 | JAVA0171 Unused local variable | |
| JAVA0173 | 1.00 | JAVA0173 Unused method parameter | |
| JAVA0174 | 1.00 | JAVA0174 Assigned local variable never used | |
| JAVA0175 | 0.00 | JAVA0175 Successive assignment to variable | |
| JAVA0176 | 0.00 | JAVA0176 Local variable name does not have required form | |
| JAVA0177 | 5.00 | JAVA0177 Variable declaration missing initializer | |
| JAVA0179 | 0.00 | JAVA0179 Local variable hides visible field | |
| JAVA0233 | 0.00 | JAVA0233 Definition of serialVersionUID other than 'private static final long serialVersionUID' | |
| JAVA0234 | 0.00 | JAVA0234 Class is Serializable but does not define serialVersionUID | |
| JAVA0235 | 0.00 | JAVA0235 Class defines serialVersionUID but does not implement Serializable | |
| JAVA0236 | 0.00 | JAVA0236 Attempt to clone an object which does not implement Cloneable | |
| JAVA0237 | 0.00 | JAVA0237 Class implements Cloneable but does not have public clone method | |
| JAVA0238 | 0.00 | JAVA0238 Clone method does not call super.clone() | |
| JAVA0239 | 0.00 | JAVA0239 Class declares 'readObject' or 'writeObject' but does not implement Serializable | |
| JAVA0240 | 0.00 | JAVA0240 Serializable class which declares readObject or writeObject but not both | |
| JAVA0241 | 0.00 | JAVA0241 'readObject' or 'writeObject' should be declared private in Serializable class | |
| JAVA0242 | 0.00 | JAVA0242 Transient field in non-Serializable class | |
| JAVA0243 | 0.00 | JAVA0243 'readResolve' or 'writeReplace' should be declared private or protected | |
| JAVA0244 | 0.00 | JAVA0244 Field or method name in subclass differs only by case from inherited field or method | |
| JAVA0245 | 0.00 | JAVA0245 JUnit TestCase with non-trivial constructor | |
| JAVA0246 | 0.00 | JAVA0246 JUnit assertXXX statement missing message parameter | |
| JAVA0247 | 0.00 | JAVA0247 JUnit 'setUp()' and 'tearDown()' should call super method | |
| JAVA0248 | 0.00 | JAVA0248 JUnit method 'setUp' or 'tearDown' with incorrect signature | |
| JAVA0249 | 0.00 | JAVA0249 JUnit TestCase 'suite()' should be declared static | |
| JAVA0250 | 0.00 | JAVA0250 JUnit TestCase declares testXXX method with incorrect signature | |
| JAVA0251 | 0.00 | JAVA0251 Use '%n' for line breaks in printf/format for platform independence | |
| JAVA0252 | 0.00 | JAVA0252 'enum' is a Java 1.5 reserved word | |
| JAVA0253 | 0.00 | JAVA0253 Not all enum constants consumed in switch statement | |
| JAVA0254 | 0.00 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| JAVA0255 | 0.00 | JAVA0255 Result of method invocation not used | |
| JAVA0256 | 0.00 | JAVA0256 Assignment of external collection/array to field | |
| JAVA0257 | 0.00 | JAVA0257 Use of 'Constant Interface' anti-pattern | |
| JAVA0258 | 0.00 | JAVA0258 Implement Iterable for foreach compatibility | |
| JAVA0259 | 2.00 | JAVA0259 Return of collection/array field | |
| JAVA0260 | 0.00 | JAVA0260 Use 'enum' instead of Enumerated Type pattern | |
| JAVA0261 | 0.00 | JAVA0261 Use specialized Enum collection types | |
| JAVA0262 | 0.00 | JAVA0262 Use of char in integer context | |
| JAVA0263 | 0.00 | JAVA0263 Long literal ends with 'l' instead of 'L' | |
| JAVA0264 | 0.00 | JAVA0264 Integer math in long context - check for overflow | |
| JAVA0265 | 1.00 | JAVA0265 Use of Throwable.printStackTrace() | |
| JAVA0266 | 2.00 | JAVA0266 Use of System.out | |
| JAVA0267 | 0.00 | JAVA0267 Use of System.err | |
| JAVA0269 | 0.00 | JAVA0269 Contents of StringBuffer never used | |
| JAVA0270 | 4.00 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| JAVA0271 | 0.00 | JAVA0271 Minimize use of on-demand (.*) static imports | |
| JAVA0272 | 0.00 | JAVA0272 Thread.run() called | |
| JAVA0273 | 0.00 | JAVA0273 Non-final derivative of Thread calls start() in constructor | |
| JAVA0274 | 0.00 | JAVA0274 Serializable class has a synchronized readObject() | |
| JAVA0275 | 0.00 | JAVA0275 Serializable class has a synchronized writeObject() and no other synchronized methods | |
| JAVA0276 | 0.00 | JAVA0276 Unnecessary use of String constructor | |
| JAVA0277 | 0.00 | JAVA0277 Iterator.next() implementation does not throw NoSuchElementException | |
| JAVA0278 | 0.00 | JAVA0278 Unnecessary use of Boolean constructor | |
| JAVA0279 | 0.00 | JAVA0279 Serialization method readObject or readObjectNoData calls an overridable method | |
| JAVA0280 | 0.00 | JAVA0280 IllegalMonitorStateException caught | |
| JAVA0281 | 0.00 | JAVA0281 Iterator.next() not called in loop | |
| JAVA0282 | 0.00 | JAVA0282 Call to Iterator.next() in loop which does not test Iterator.hasNext() | |
| JAVA0283 | 0.00 | JAVA0283 Control variable not updated in loop body | |
| JAVA0284 | 0.00 | JAVA0284 Explicit garbage collection | |
| JAVA0285 | 0.00 | JAVA0285 Dereference of potentially null variable | |
| JAVA0286 | 0.00 | JAVA0286 Dereference of null variable | |
| JAVA0287 | 0.00 | JAVA0287 Unnecessary null check | |
| JAVA0288 | 0.00 | JAVA0288 Inconsistent null check | |
| LINES | 992.00 | Number of lines in the source file | |
| LINE_COMMENT | 29.00 | Number of line comments | |
| LOC | 685.00 | Lines of code | |
| LOGICAL_LINES | 349.00 | Number of statements | |
| LOOPS | 24.00 | Number of loops | |
| NEST_DEPTH | 5.00 | Maximum nesting depth | |
| OPERANDS | 1286.00 | Number of operands | |
| OPERATORS | 2815.00 | Number of operators | |
| PARAMS | 63.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 4101.00 | Halstead program length | |
| PROGRAM_VOCAB | 471.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 117.00 | Number of return points from functions | |
| SIZE | 27814.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 412.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 59.00 | Number of unique operators | |
| WHITESPACE | 240.00 | Number of whitespace lines | |