com.sun.enterprise.util.cluster.InstanceInfo Maven / Gradle / Ivy
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package com.sun.enterprise.util.cluster;
import com.sun.enterprise.admin.remote.RemoteAdminCommand;
import com.sun.enterprise.util.StringUtils;
import java.util.*;
import java.util.logging.Logger;
import org.glassfish.api.admin.CommandException;
import org.glassfish.api.admin.ParameterMap;
/**
* Used to format instance state info in a standard way.
* It also does internet work
* @author byron Nevins
*/
public final class InstanceInfo {
/*
public InstanceInfo(String name0, int port0, String host0,
Logger logger0, int timeout0) {
this(name0, port0, host0, null, logger0, timeout0);
}
*/
public InstanceInfo(String name0, int port0, String host0, String cluster0,
Logger logger0, int timeout0) {
if (name0 == null || host0 == null)
throw new NullPointerException("null arguments");
name = name0;
port = port0;
host = host0;
logger = logger0;
state = pingInstance();
timeoutInMsec = timeout0;
if (!StringUtils.ok(cluster0))
cluster = null;
else
cluster = cluster0;
}
@Override
public final String toString() {
String cl = "";
if (cluster != null)
cl = ", cluster: " + getCluster();
return "name: " + getName()
+ ", host: " + getHost()
+ ", port: " + getPort()
+ cl
+ ", state: " + state;
}
public final String getDisplayCluster() {
return cluster == null ? NO_CLUSTER : cluster;
}
public final String getCluster() {
return cluster;
}
public final String getHost() {
return host;
}
public final int getPort() {
return port;
}
public final String getName() {
return name;
}
public final String getState() {
return state;
}
public final boolean isRunning() {
return running;
}
/////////////////////////////////////////////////////////////////////////
//////// static formatting stuff below ///////////////////////////////
/////////////////////////////////////////////////////////////////////////
public static String format(List infos) {
int longestName = NAME.length();
int longestHost = HOST.length();
int longestState = STATE.length();
int longestPort = PORT.length();
int longestCluster = CLUSTER.length();
for (InstanceInfo info : infos) {
int namel = info.getName().length();
int hostl = info.getHost().length();
int statel = info.getState().length();
int clusterl = info.getDisplayCluster().length();
if (namel > longestName)
longestName = namel;
if (hostl > longestHost)
longestHost = hostl;
if (statel > longestState)
longestState = statel;
if (clusterl > longestCluster)
longestCluster = clusterl;
}
// we could truncate to fit in 80 characters -- but that gets very complex.
// If user wants huge names -- he'll have to put up with it!
longestName += 2;
longestHost += 2;
longestState += 2;
longestPort += 2;
longestCluster += 2;
StringBuilder sb = new StringBuilder();
String formattedLine =
"%-" + longestName
+ "s %-" + longestHost
+ "s %-" + longestPort
+ "s %-" + longestCluster
+ "s %-" + longestState
+ "s";
sb.append(String.format(formattedLine, NAME, HOST, PORT, CLUSTER, STATE));
sb.append('\n');
for (int i = 0; i < longestName; i++)
sb.append('-');
sb.append('|');
for (int i = 0; i < longestHost; i++)
sb.append('-');
sb.append('|');
for (int i = 0; i < longestPort; i++)
sb.append('-');
sb.append('|');
for (int i = 0; i < longestCluster; i++)
sb.append('-');
sb.append('|');
for (int i = 0; i < longestState; i++)
sb.append('-');
sb.append('|');
sb.append('\n');
// no linefeed at the end!!!
boolean first = true;
for (InstanceInfo info : infos) {
if (first)
first = false;
else
sb.append('\n');
String portString = " " + info.getPort();
sb.append(String.format(formattedLine, info.getName(),
info.getHost(), portString, " " + info.getDisplayCluster(), info.getState()));
}
return sb.toString();
}
// TODO what about security????
private String pingInstance() {
// there could be more than one instance with the same admin port
// let's get a positive ID!
if (i9())
return getUptime();
else
return NOT_RUNNING;
}
private String getUptime() {
try {
RemoteAdminCommand rac = new RemoteAdminCommand("uptime", host, port, false, "admin", null, logger);
rac.setConnectTimeout(timeoutInMsec);
ParameterMap map = new ParameterMap();
map.set("type", "terse");
running = true;
return rac.executeCommand(map).trim();
}
catch (CommandException ex) {
return NOT_RUNNING;
}
}
private boolean i9() {
// are you really the right server?
// simple test -- is the server-name in the returned string?
try {
RemoteAdminCommand rac = new RemoteAdminCommand("__locations", host, port, false, "admin", null, logger);
rac.setConnectTimeout(timeoutInMsec);
ParameterMap map = new ParameterMap();
map.set("type", "terse");
String ret = rac.executeCommand(map).trim();
if (ret != null && ret.endsWith("/" + name))
return true;
}
catch (CommandException ex) {
// handle below
}
return false;
}
private static String prepareFormatString() {
// Probably not worth the effort but what the heck...
return null;
}
private final String host;
private final int port;
private final String name;
private final String state;
private final String cluster;
private final Logger logger;
private final int timeoutInMsec;
private boolean running;
private static final String NOT_RUNNING = Strings.get("ListInstances.NotRunning");
private static final String NAME = Strings.get("ListInstances.name");
private static final String HOST = Strings.get("ListInstances.host");
private static final String PORT = Strings.get("ListInstances.port");
private static final String STATE = Strings.get("ListInstances.state");
private static final String CLUSTER = Strings.get("ListInstances.cluster");
private static final String NO_CLUSTER = "---";
}
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