Jamie Doornbos
055ae0cc98
git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@5489 542714f4-19e9-0310-aa3c-eee0fc999fb1
753 lines
27 KiB
Java
753 lines
27 KiB
Java
//
|
|
// $Id$
|
|
//
|
|
// Narya library - tools for developing networked games
|
|
// Copyright (C) 2002-2008 Three Rings Design, Inc., All Rights Reserved
|
|
// http://www.threerings.net/code/narya/
|
|
//
|
|
// This library is free software; you can redistribute it and/or modify it
|
|
// under the terms of the GNU Lesser General Public License as published
|
|
// by the Free Software Foundation; either version 2.1 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// This library 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
|
|
// Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public
|
|
// License along with this library; if not, write to the Free Software
|
|
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
package com.threerings.bureau.server;
|
|
|
|
import java.util.Map;
|
|
import java.util.Set;
|
|
|
|
import java.io.IOException;
|
|
|
|
import com.google.common.collect.Maps;
|
|
import com.google.common.collect.Sets;
|
|
import com.google.inject.Inject;
|
|
import com.google.inject.Singleton;
|
|
|
|
import com.samskivert.util.Interval;
|
|
import com.samskivert.util.Invoker;
|
|
import com.samskivert.util.RunQueue;
|
|
import com.samskivert.util.StringUtil;
|
|
|
|
import com.threerings.presents.annotation.MainInvoker;
|
|
import com.threerings.presents.data.ClientObject;
|
|
import com.threerings.presents.dobj.RootDObjectManager;
|
|
import com.threerings.presents.server.ClientManager;
|
|
import com.threerings.presents.server.InvocationManager;
|
|
import com.threerings.presents.server.PresentsClient;
|
|
|
|
import com.threerings.bureau.data.AgentObject;
|
|
import com.threerings.bureau.data.BureauCodes;
|
|
import com.threerings.bureau.data.BureauCredentials;
|
|
import com.threerings.bureau.util.BureauLogRedirector;
|
|
|
|
import static com.threerings.bureau.Log.log;
|
|
|
|
/**
|
|
* Abstracts the launching and termination of external processes (bureaus) that host instances of
|
|
* server-side code (agents).
|
|
*/
|
|
@Singleton
|
|
public class BureauRegistry
|
|
{
|
|
/**
|
|
* Defines how a bureau is launched. Instances are associated to bureau types by the server on
|
|
* startup. The instances are used whenever the registry needs to launch a bureau for an agent
|
|
* with the associated bureau type.
|
|
*/
|
|
public static interface Launcher
|
|
{
|
|
/**
|
|
* Kicks off a new bureau. This method will always be called on the unit invocation
|
|
* thread since it may do extensive I/O.
|
|
* @param bureauId the id of the bureau being launched
|
|
* @param token the secret string for the bureau to use in its credentials
|
|
*/
|
|
void launchBureau (String bureauId, String token)
|
|
throws IOException;
|
|
}
|
|
|
|
/**
|
|
* Defines how to generate a command to launch a bureau in a local process.
|
|
* @see #setCommandGenerator(String,CommandGenerator,int)
|
|
* @see Launcher
|
|
*/
|
|
public static interface CommandGenerator
|
|
{
|
|
/**
|
|
* Creates the command line to launch a new bureau using the given information.
|
|
* Called by the registry when a new bureau is needed whose type was registered
|
|
* with <code>setCommandGenerator</code>.
|
|
* @param bureauId the id of the bureau being launched
|
|
* @param token the token string to use for the credentials when logging in
|
|
* @return command line arguments, including executable name
|
|
*/
|
|
String[] createCommand (String bureauId, String token);
|
|
}
|
|
|
|
/**
|
|
* Creates an uninitialized registry.
|
|
*/
|
|
@Inject public BureauRegistry (InvocationManager invmgr)
|
|
{
|
|
invmgr.registerDispatcher(new BureauDispatcher(new BureauProvider() {
|
|
public void bureauInitialized (ClientObject client, String bureauId) {
|
|
BureauRegistry.this.bureauInitialized(client, bureauId);
|
|
}
|
|
public void bureauError (ClientObject caller, String message) {
|
|
BureauRegistry.this.bureauError(caller, message);
|
|
}
|
|
public void agentCreated (ClientObject client, int agentId) {
|
|
BureauRegistry.this.agentCreated(client, agentId);
|
|
}
|
|
public void agentCreationFailed (ClientObject client, int agentId) {
|
|
BureauRegistry.this.agentCreationFailed(client, agentId);
|
|
}
|
|
public void agentDestroyed (ClientObject client, int agentId) {
|
|
BureauRegistry.this.agentDestroyed(client, agentId);
|
|
}
|
|
}), BureauCodes.BUREAU_GROUP);
|
|
}
|
|
|
|
/**
|
|
* Provides the Bureau registry with necessary runtime configuration. Inserts the bureau
|
|
* client factory into the client manager and registers observers to track the progress
|
|
* of launched bureaus.
|
|
* @see BureauClientFactory
|
|
*/
|
|
public void init ()
|
|
{
|
|
_clmgr.addClientObserver(new ClientManager.ClientObserver() {
|
|
public void clientSessionDidStart (PresentsClient client) {
|
|
String id = BureauCredentials.extractBureauId(client.getUsername());
|
|
if (id != null) {
|
|
sessionDidStart(client, id);
|
|
}
|
|
}
|
|
public void clientSessionDidEnd (PresentsClient client) {
|
|
String id = BureauCredentials.extractBureauId(client.getUsername());
|
|
if (id != null) {
|
|
sessionDidEnd(client, id);
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Adds the delegating client factory. Note this should be called after all application
|
|
* client factories are in place. The installed factory will simply create presents clients and
|
|
* client objects for bureaus.
|
|
*/
|
|
public void setDefaultClientFactory ()
|
|
{
|
|
// add the client factory, but later, after all the other modules have been initialized
|
|
_clmgr.setClientFactory(new BureauClientFactory(_clmgr.getClientFactory()));
|
|
}
|
|
|
|
/**
|
|
* Check the credentials to make sure this is one of our bureaus.
|
|
* @return null if all's well, otherwise a string describing the authentication failure
|
|
*/
|
|
public String checkToken (BureauCredentials creds)
|
|
{
|
|
Bureau bureau = _bureaus.get(creds.bureauId);
|
|
if (bureau == null) {
|
|
return "Bureau " + creds.bureauId + " not found";
|
|
}
|
|
if (bureau.clientObj != null) {
|
|
return "Bureau " + creds.bureauId + " already logged in";
|
|
}
|
|
if (!bureau.token.equals(creds.sessionToken)) {
|
|
return "Bureau " + creds.bureauId +
|
|
" does not match credentials token";
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Registers a command generator for a given type. When an agent is started and no bureaus are
|
|
* running, the <code>bureauType</code> is used to determine the <code>CommandGenerator</code>
|
|
* instance to call. The registry will wait indefinitely for the bureau to connect back.
|
|
* @param bureauType the type of bureau that will be launched
|
|
* @param cmdGenerator the generator to be used for bureaus of <code>bureauType</code>
|
|
*/
|
|
public void setCommandGenerator (String bureauType, final CommandGenerator cmdGenerator)
|
|
{
|
|
setCommandGenerator(bureauType, cmdGenerator, 0);
|
|
}
|
|
|
|
/**
|
|
* Registers a command generator for a given type. When an agent is started and no bureaus are
|
|
* running, the <code>bureauType</code> is used to determine the <code>CommandGenerator</code>
|
|
* instance to call. If the launched bureau does not connect within the given number of
|
|
* milliseconds, it will be logged as an error and future attempts to launch the bureau
|
|
* will try launching the command again.
|
|
* @param bureauType the type of bureau that will be launched
|
|
* @param cmdGenerator the generator to be used for bureaus of <code>bureauType</code>
|
|
* @param timeout milliseconds to wait for the bureau or 0 to wait forever
|
|
*/
|
|
public void setCommandGenerator (
|
|
String bureauType, final CommandGenerator cmdGenerator, int timeout)
|
|
{
|
|
setLauncher(bureauType, new Launcher() {
|
|
public void launchBureau (String bureauId, String token)
|
|
throws IOException {
|
|
ProcessBuilder builder = new ProcessBuilder(
|
|
cmdGenerator.createCommand(bureauId, token));
|
|
builder.redirectErrorStream(true);
|
|
Process process = builder.start();
|
|
// log the output of the process and prefix with bureau id
|
|
new BureauLogRedirector(bureauId, process.getInputStream());
|
|
}
|
|
|
|
@Override
|
|
public String toString () {
|
|
return "DefaultLauncher for " + cmdGenerator;
|
|
}
|
|
}, timeout);
|
|
}
|
|
|
|
/**
|
|
* Registers a launcher for a given type. When an agent is started and no bureaus are
|
|
* running, the <code>bureauType</code> is used to determine the <code>Launcher</code>
|
|
* instance to call. The registry will wait indefinitely for the launched bureau
|
|
* to connect back.
|
|
* @param bureauType the type of bureau that will be launched
|
|
* @param launcher the launcher to be used for bureaus of <code>bureauType</code>
|
|
*/
|
|
public void setLauncher (String bureauType, Launcher launcher)
|
|
{
|
|
setLauncher(bureauType, launcher, 0);
|
|
}
|
|
|
|
/**
|
|
* Registers a launcher for a given type. When an agent is started and no bureaus are
|
|
* running, the <code>bureauType</code> is used to determine the <code>Launcher</code>
|
|
* instance to call. If the launched bureau does not connect within the given number of
|
|
* milliseconds, it will be logged as an error and future attempts to launch the bureau
|
|
* will invoke the <code>launch</code> method again.
|
|
* @param bureauType the type of bureau that will be launched
|
|
* @param launcher the launcher to be used for bureaus of <code>bureauType</code>
|
|
* @param timeout milliseconds to wait for the bureau or 0 to wait forever
|
|
*/
|
|
public void setLauncher (String bureauType, Launcher launcher, int timeout)
|
|
{
|
|
if (_launchers.get(bureauType) != null) {
|
|
log.warning("Launcher for type already exists", "type", bureauType);
|
|
return;
|
|
}
|
|
|
|
_launchers.put(bureauType, new LauncherEntry(launcher, timeout));
|
|
}
|
|
|
|
/**
|
|
* Starts a new agent using the data in the given object, creating a new bureau if necessary.
|
|
*/
|
|
public void startAgent (AgentObject agent)
|
|
{
|
|
Bureau bureau = _bureaus.get(agent.bureauId);
|
|
if (bureau != null && bureau.ready()) {
|
|
_omgr.registerObject(agent);
|
|
|
|
log.info("Bureau ready, sending createAgent", "agent", agent.which());
|
|
BureauSender.createAgent(bureau.clientObj, agent.getOid());
|
|
bureau.agentStates.put(agent, AgentState.STARTED);
|
|
bureau.summarize();
|
|
return;
|
|
}
|
|
|
|
if (bureau == null) {
|
|
LauncherEntry launcherEntry = _launchers.get(agent.bureauType);
|
|
if (launcherEntry == null) {
|
|
log.warning("Launcher not found", "agent", agent.which());
|
|
return;
|
|
}
|
|
|
|
log.info("Creating new bureau", "bureauId", agent.bureauId, "launcher", launcherEntry);
|
|
bureau = new Bureau();
|
|
bureau.bureauId = agent.bureauId;
|
|
bureau.token = generateToken(bureau.bureauId);
|
|
bureau.launcherEntry = launcherEntry;
|
|
_invoker.postUnit(new LauncherUnit(bureau, _omgr));
|
|
_bureaus.put(agent.bureauId, bureau);
|
|
}
|
|
|
|
_omgr.registerObject(agent);
|
|
bureau.agentStates.put(agent, AgentState.PENDING);
|
|
|
|
log.info("Bureau not ready, pending agent", "agent", agent.which());
|
|
bureau.summarize();
|
|
}
|
|
|
|
/**
|
|
* Destroys a previously started agent using the data in the given object.
|
|
*/
|
|
public void destroyAgent (AgentObject agent)
|
|
{
|
|
FoundAgent found = resolve(null, agent.getOid(), "destroyAgent");
|
|
if (found == null) {
|
|
return;
|
|
}
|
|
|
|
log.info("Destroying agent", "agent", agent.which());
|
|
|
|
// transition the agent to a new state and perform the effect of the transition
|
|
if (found.state == AgentState.PENDING) {
|
|
found.bureau.agentStates.remove(found.agent);
|
|
// !TODO: is the the right place to destroy it?
|
|
_omgr.destroyObject(found.agent.getOid());
|
|
|
|
} else if (found.state == AgentState.STARTED) {
|
|
found.bureau.agentStates.put(found.agent, AgentState.STILL_BORN);
|
|
|
|
} else if (found.state == AgentState.RUNNING) {
|
|
BureauSender.destroyAgent(found.bureau.clientObj, agent.getOid());
|
|
found.bureau.agentStates.put(found.agent, AgentState.DESTROYED);
|
|
|
|
} else if (found.state == AgentState.DESTROYED ||
|
|
found.state == AgentState.STILL_BORN) {
|
|
log.warning("Ignoring request to destroy agent in unexpected state",
|
|
"state", found.state, "agent", found.agent.which());
|
|
}
|
|
|
|
found.bureau.summarize();
|
|
}
|
|
|
|
/**
|
|
* Returns the active session for a bureau of the given id.
|
|
*/
|
|
public PresentsClient lookupClient (String bureauId)
|
|
{
|
|
Bureau bureau = _bureaus.get(bureauId);
|
|
if (bureau == null) {
|
|
return null;
|
|
}
|
|
return bureau.client;
|
|
}
|
|
|
|
protected void sessionDidStart (PresentsClient client, String id)
|
|
{
|
|
Bureau bureau = _bureaus.get(id);
|
|
if (bureau == null) {
|
|
log.warning("Starting session for unknown bureau", "id", id, "client", client);
|
|
return;
|
|
}
|
|
if (bureau.client != null) {
|
|
log.warning("Multiple sessions for the same bureau", "id", id, "client", client,
|
|
"bureau", bureau);
|
|
}
|
|
bureau.client = client;
|
|
}
|
|
|
|
protected void sessionDidEnd (PresentsClient client, String id)
|
|
{
|
|
Bureau bureau = _bureaus.get(id);
|
|
if (bureau == null) {
|
|
log.warning("Ending session for unknown bureau", "id", id, "client", client);
|
|
return;
|
|
}
|
|
if (bureau.client == null) {
|
|
log.warning("Multiple logouts from the same bureau", "id", id, "client", client,
|
|
"bureau", bureau);
|
|
}
|
|
bureau.client = null;
|
|
|
|
clientDestroyed(bureau);
|
|
}
|
|
|
|
/**
|
|
* Callback for when the bureau client acknowledges starting up. Starts all pending agents and
|
|
* causes subsequent agent start requests to be sent directly to the bureau.
|
|
*/
|
|
protected void bureauInitialized (ClientObject client, String bureauId)
|
|
{
|
|
final Bureau bureau = _bureaus.get(bureauId);
|
|
if (bureau == null) {
|
|
log.warning("Initialization of non-existent bureau", "bureauId", bureauId);
|
|
return;
|
|
}
|
|
|
|
bureau.clientObj = client;
|
|
|
|
log.info("Bureau created, launching pending agents", "bureau", bureau);
|
|
|
|
// find all pending agents
|
|
Set<AgentObject> pending = Sets.newHashSet();
|
|
|
|
for (Map.Entry<AgentObject, AgentState> entry :
|
|
bureau.agentStates.entrySet()) {
|
|
|
|
if (entry.getValue() == AgentState.PENDING) {
|
|
pending.add(entry.getKey());
|
|
}
|
|
}
|
|
|
|
// create them
|
|
for (AgentObject agent : pending) {
|
|
log.info("Creating agent", "agent", agent.which());
|
|
BureauSender.createAgent(bureau.clientObj, agent.getOid());
|
|
bureau.agentStates.put(agent, AgentState.STARTED);
|
|
}
|
|
|
|
bureau.summarize();
|
|
}
|
|
|
|
protected void bureauError (ClientObject caller, String message)
|
|
{
|
|
for (Bureau bureau : _bureaus.values()) {
|
|
if (bureau.clientObj == caller) {
|
|
log.info(
|
|
"Bureau error occurred", "caller", caller.who(), "message", message,
|
|
"bureau", bureau.bureauId);
|
|
bureau.client.endSession();
|
|
return;
|
|
}
|
|
}
|
|
log.warning(
|
|
"Bureau error occurred in unregistered bureau", "caller", caller.who(),
|
|
"message", message);
|
|
}
|
|
|
|
/**
|
|
* Callback for when the bureau client acknowledges the creation of an agent.
|
|
*/
|
|
protected void agentCreated (ClientObject client, int agentId)
|
|
{
|
|
FoundAgent found = resolve(client, agentId, "agentCreated");
|
|
if (found == null) {
|
|
return;
|
|
}
|
|
|
|
log.info("Agent creation confirmed", "agent", found.agent.which());
|
|
|
|
if (found.state == AgentState.STARTED) {
|
|
found.bureau.agentStates.put(found.agent, AgentState.RUNNING);
|
|
found.agent.setClientOid(client.getOid());
|
|
|
|
} else if (found.state == AgentState.STILL_BORN) {
|
|
BureauSender.destroyAgent(found.bureau.clientObj, agentId);
|
|
found.bureau.agentStates.put(found.agent, AgentState.DESTROYED);
|
|
|
|
} else if (found.state == AgentState.PENDING ||
|
|
found.state == AgentState.RUNNING ||
|
|
found.state == AgentState.DESTROYED) {
|
|
log.warning("Ignoring confirmation of creation of an agent in an unexpected state",
|
|
"state", found.state, "agent", found.agent.which());
|
|
}
|
|
|
|
found.bureau.summarize();
|
|
}
|
|
|
|
/**
|
|
* Callback for when the bureau client acknowledges the failure to create an agent.
|
|
*/
|
|
protected void agentCreationFailed (ClientObject client, int agentId)
|
|
{
|
|
FoundAgent found = resolve(client, agentId, "agentCreationFailed");
|
|
if (found == null) {
|
|
return;
|
|
}
|
|
|
|
log.info("Agent creation failed", "agent", found.agent.which());
|
|
|
|
if (found.state == AgentState.STARTED ||
|
|
found.state == AgentState.STILL_BORN) {
|
|
found.bureau.agentStates.remove(found.agent);
|
|
|
|
} else if (found.state == AgentState.PENDING ||
|
|
found.state == AgentState.RUNNING ||
|
|
found.state == AgentState.DESTROYED) {
|
|
log.warning("Ignoring failure of creation of an agent in an unexpected state",
|
|
"state", found.state, "agent", found.agent.which());
|
|
}
|
|
|
|
found.bureau.summarize();
|
|
}
|
|
|
|
/**
|
|
* Callback for when the bureau client acknowledges the destruction of an agent.
|
|
*/
|
|
protected void agentDestroyed (ClientObject client, int agentId)
|
|
{
|
|
FoundAgent found = resolve(client, agentId, "agentDestroyed");
|
|
if (found == null) {
|
|
return;
|
|
}
|
|
|
|
log.info("Agent destruction confirmed", "agent", found.agent.which());
|
|
|
|
if (found.state == AgentState.DESTROYED) {
|
|
found.bureau.agentStates.remove(found.agent);
|
|
|
|
} else if (found.state == AgentState.PENDING ||
|
|
found.state == AgentState.STARTED ||
|
|
found.state == AgentState.RUNNING ||
|
|
found.state == AgentState.STILL_BORN) {
|
|
log.warning("Ignoring confirmation of destruction of agent in unexpected state",
|
|
"state", found.state, "agent", found.agent.which());
|
|
}
|
|
|
|
found.bureau.summarize();
|
|
}
|
|
|
|
/**
|
|
* Callback for when a client is destroyed.
|
|
*/
|
|
protected void clientDestroyed (Bureau bureau)
|
|
{
|
|
log.info("Client destroyed, destroying all agents", "bureau", bureau);
|
|
|
|
// clean up any agents attached to this bureau
|
|
for (AgentObject agent : bureau.agentStates.keySet()) {
|
|
_omgr.destroyObject(agent.getOid());
|
|
}
|
|
bureau.agentStates.clear();
|
|
|
|
if (_bureaus.remove(bureau.bureauId) == null) {
|
|
log.info("Bureau not found to remove", "bureau", bureau);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Does lots of null checks and lookups and resolves the given information into FoundAgent.
|
|
*/
|
|
protected FoundAgent resolve (ClientObject client, int agentId, String resolver)
|
|
{
|
|
com.threerings.presents.dobj.DObject dobj = _omgr.getObject(agentId);
|
|
if (dobj == null) {
|
|
log.warning("Non-existent agent", "function", resolver, "agentId", agentId);
|
|
return null;
|
|
}
|
|
|
|
if (!(dobj instanceof AgentObject)) {
|
|
log.warning("Object not an agent", "function", resolver, "obj", dobj.getClass());
|
|
return null;
|
|
}
|
|
|
|
AgentObject agent = (AgentObject)dobj;
|
|
Bureau bureau = _bureaus.get(agent.bureauId);
|
|
if (bureau == null) {
|
|
log.warning("Bureau not found for agent", "function", resolver, "agent", agent.which());
|
|
return null;
|
|
}
|
|
|
|
if (!bureau.agentStates.containsKey(agent)) {
|
|
log.warning("Bureau does not have agent", "function", resolver, "agent", agent.which());
|
|
return null;
|
|
}
|
|
|
|
if (client != null && bureau.clientObj != client) {
|
|
log.warning("Masquerading request", "function", resolver, "agent", agent.which(),
|
|
"client", bureau.clientObj, "client", client);
|
|
return null;
|
|
}
|
|
|
|
return new FoundAgent(bureau, agent, bureau.agentStates.get(agent));
|
|
}
|
|
|
|
/**
|
|
* Create a hard-to-guess token that the bureau can use to authenticate itself when it tries
|
|
* to log in.
|
|
*/
|
|
protected String generateToken (String bureauId)
|
|
{
|
|
String tokenSource = bureauId + "@" + System.currentTimeMillis() + "r" + Math.random();
|
|
return StringUtil.md5hex(tokenSource);
|
|
}
|
|
|
|
/**
|
|
* Called by the launcher unit timeout time after launching.
|
|
* @param bureau bureau whose launch occurred
|
|
*/
|
|
protected void launchTimeoutExpired (Bureau bureau)
|
|
{
|
|
if (bureau.clientObj != null) {
|
|
return; // all's well, ignore
|
|
}
|
|
|
|
if (!_bureaus.containsKey(bureau.bureauId)) {
|
|
// bureau has already managed to get destroyed before the launch timeout, ignore
|
|
return;
|
|
}
|
|
|
|
log.warning("Bureau failed to launch", "bureau", bureau);
|
|
_bureaus.remove(bureau.bureauId);
|
|
}
|
|
|
|
/**
|
|
* Invoker unit to launch a bureau's process, then assign the result on the main thread.
|
|
*/
|
|
protected class LauncherUnit extends Invoker.Unit
|
|
{
|
|
LauncherUnit (Bureau bureau, RunQueue runQueue) {
|
|
super("LauncherUnit for " + bureau + ": " + StringUtil.toString(bureau.launcherEntry));
|
|
_bureau = bureau;
|
|
}
|
|
|
|
@Override public boolean invoke () {
|
|
try {
|
|
_bureau.launch();
|
|
} catch (Exception e) {
|
|
log.warning("Could not launch bureau", e);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
@Override
|
|
public void handleResult () {
|
|
int timeout = _bureau.launcherEntry.timeout;
|
|
if (timeout != 0) {
|
|
new Interval(_runQueue) {
|
|
@Override public void expired () {
|
|
launchTimeoutExpired(_bureau);
|
|
}
|
|
}.schedule(timeout);
|
|
}
|
|
_bureau.launched = true;
|
|
_bureau.launcherEntry = null;
|
|
log.info("Bureau launched", "bureau", _bureau);
|
|
}
|
|
|
|
protected Bureau _bureau;
|
|
protected Process _result;
|
|
protected RunQueue _runQueue;
|
|
}
|
|
|
|
protected static class LauncherEntry
|
|
{
|
|
public Launcher launcher;
|
|
public int timeout;
|
|
|
|
public LauncherEntry (Launcher launcher, int timeout) {
|
|
this.launcher = launcher;
|
|
this.timeout = timeout;
|
|
}
|
|
|
|
@Override
|
|
public String toString () {
|
|
return StringUtil.fieldsToString(this);
|
|
}
|
|
}
|
|
|
|
protected enum AgentState
|
|
{
|
|
// Not yet stated, waiting for bureau to ack
|
|
PENDING,
|
|
// Bureau acked, agent told to start
|
|
STARTED,
|
|
// Agent ack'ed, now live and hosting, ready to tell other clients
|
|
RUNNING,
|
|
// Agent destruction requested, waiting for acknowledge (after which the agent is removed
|
|
// from the Bureau, so has no state)
|
|
DESTROYED,
|
|
// Edge case: destroy request prior to RUNNING
|
|
STILL_BORN
|
|
}
|
|
|
|
/** Models the results of searching for an agent. */
|
|
protected static class FoundAgent
|
|
{
|
|
FoundAgent (Bureau bureau, AgentObject agent, AgentState state) {
|
|
this.bureau = bureau;
|
|
this.agent = agent;
|
|
this.state = state;
|
|
}
|
|
|
|
// Bureau containing the agent
|
|
Bureau bureau;
|
|
|
|
// The object
|
|
AgentObject agent;
|
|
|
|
// The state of the agent
|
|
AgentState state;
|
|
}
|
|
|
|
/** Models a bureau, including the process handle, all running agents and their states. */
|
|
protected static class Bureau
|
|
{
|
|
// non-null once the bureau is scheduled but not yet kicked off
|
|
LauncherEntry launcherEntry;
|
|
|
|
// non-null once the bureau is kicked off
|
|
boolean launched;
|
|
|
|
// The token given to this bureau for authentication
|
|
String token;
|
|
|
|
// The bureau's key in the map of bureaus. All requests for this bureau
|
|
// with this id should be associated with one instance
|
|
String bureauId;
|
|
|
|
// The client object of the bureau that has opened a dobj connection to
|
|
// the registry
|
|
ClientObject clientObj;
|
|
|
|
// The client session
|
|
PresentsClient client;
|
|
|
|
// The states of the various agents allocated to this bureau
|
|
Map<AgentObject, AgentState> agentStates = Maps.newHashMap();
|
|
|
|
@Override
|
|
public String toString () {
|
|
StringBuilder builder = new StringBuilder();
|
|
builder.append("[Bureau id=").append(bureauId).append(", client=");
|
|
if (clientObj == null) {
|
|
builder.append("null");
|
|
} else {
|
|
builder.append(clientObj.getOid());
|
|
}
|
|
builder.append(", launcherEntry=").append(launcherEntry);
|
|
builder.append(", launched=").append(launched);
|
|
builder.append(", totalAgents=").append(agentStates.size());
|
|
agentSummary(builder.append(", ")).append("]");
|
|
return builder.toString();
|
|
}
|
|
|
|
boolean ready () {
|
|
return clientObj != null;
|
|
}
|
|
|
|
StringBuilder agentSummary (StringBuilder str) {
|
|
int[] counts = new int[AgentState.values().length];
|
|
for (Map.Entry<AgentObject, AgentState> me : agentStates.entrySet()) {
|
|
counts[me.getValue().ordinal()]++;
|
|
}
|
|
for (AgentState state : AgentState.values()) {
|
|
if (state.ordinal() > 0) {
|
|
str.append(", ");
|
|
}
|
|
str.append(counts[state.ordinal()]).append(" ").append(state.name());
|
|
}
|
|
return str;
|
|
}
|
|
|
|
void summarize () {
|
|
StringBuilder str = new StringBuilder();
|
|
str.append("Bureau ").append(bureauId).append(" [");
|
|
agentSummary(str).append("]");
|
|
log.info(str.toString());
|
|
}
|
|
|
|
void launch () throws IOException {
|
|
launcherEntry.launcher.launchBureau(bureauId, token);
|
|
|
|
}
|
|
}
|
|
|
|
protected Map<String, LauncherEntry> _launchers = Maps.newHashMap();
|
|
protected Map<String, Bureau> _bureaus = Maps.newHashMap();
|
|
|
|
@Inject protected RootDObjectManager _omgr;
|
|
@Inject protected @MainInvoker Invoker _invoker;
|
|
@Inject protected ClientManager _clmgr;
|
|
}
|