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Widening.

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git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@4524 542714f4-19e9-0310-aa3c-eee0fc999fb1
This commit is contained in:
Michael Bayne
2007-02-02 23:40:42 +00:00
parent cadde41ccb
commit 3b2c3c921b
1 changed files with 48 additions and 63 deletions
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src/java/com/threerings/presents/peer/server/PeerManager.java
+48 -63
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@@ -51,17 +51,16 @@ import com.threerings.presents.peer.server.persist.NodeRepository;
import static com.threerings.presents.Log.log;
/**
* Manages connections to the other nodes in a Presents server cluster. Each
* server maintains a client connection to the other servers and subscribes to
* the {@link NodeObject} of all peer servers and uses those objects to
* communicate cross-node information.
* Manages connections to the other nodes in a Presents server cluster. Each server maintains a
* client connection to the other servers and subscribes to the {@link NodeObject} of all peer
* servers and uses those objects to communicate cross-node information.
*/
public class PeerManager
implements ClientManager.ClientObserver
{
/**
* Creates a peer manager which will create a {@link NodeRepository} which
* will be used to publish our existence and discover the other nodes.
* Creates a peer manager which will create a {@link NodeRepository} which will be used to
* publish our existence and discover the other nodes.
*/
public PeerManager (ConnectionProvider conprov, Invoker invoker)
throws PersistenceException
@@ -79,24 +78,21 @@ public class PeerManager
}
/**
* Initializes this peer manager and initiates the process of connecting to
* its peer nodes. This will also reconfigure the ConnectionManager and
* ClientManager with peer related bits, so this should not be called until
* <em>after</em> the main server has set up its client factory and
* authenticator.
* Initializes this peer manager and initiates the process of connecting to its peer
* nodes. This will also reconfigure the ConnectionManager and ClientManager with peer related
* bits, so this should not be called until <em>after</em> the main server has set up its
* client factory and authenticator.
*
* @param nodeName this node's unique name.
* @param sharedSecret a shared secret used to allow the peers to
* authenticate with one another.
* @param sharedSecret a shared secret used to allow the peers to authenticate with one
* another.
* @param hostName the DNS name of the server running this node.
* @param publicHostName if non-null, a separate public DNS hostname by
* which the node is to be known to normal clients (we may want inter-peer
* communication to take place over a different network than the
* communication between real clients and the various peer servers).
* @param publicHostName if non-null, a separate public DNS hostname by which the node is to be
* known to normal clients (we may want inter-peer communication to take place over a different
* network than the communication between real clients and the various peer servers).
* @param port the port on which other nodes should connect to us.
* @param conprov used to obtain our JDBC connections.
* @param invoker we will perform all database operations on the supplied
* invoker thread.
* @param invoker we will perform all database operations on the supplied invoker thread.
*/
public void init (String nodeName, String sharedSecret, String hostName,
String publicHostName, int port)
@@ -109,11 +105,9 @@ public class PeerManager
// wire ourselves into the server
PresentsServer.conmgr.setAuthenticator(
new PeerAuthenticator(
this, PresentsServer.conmgr.getAuthenticator()));
new PeerAuthenticator(this, PresentsServer.conmgr.getAuthenticator()));
PresentsServer.clmgr.setClientFactory(
new PeerClientFactory(
this, PresentsServer.clmgr.getClientFactory()));
new PeerClientFactory(this, PresentsServer.clmgr.getClientFactory()));
// create our node object
_nodeobj = PresentsServer.omgr.registerObject(createNodeObject());
@@ -121,13 +115,12 @@ public class PeerManager
// register ourselves with the node table
_invoker.postUnit(new Invoker.Unit() {
public boolean invoke () {
NodeRecord record = new NodeRecord(
_nodeName, _hostName, _publicHostName, _port);
NodeRecord record = new NodeRecord(_nodeName, _hostName, _publicHostName, _port);
try {
_noderepo.updateNode(record);
} catch (PersistenceException pe) {
log.warning("Failed to register node record " +
"[rec=" + record + ", error=" + pe + "].");
log.warning("Failed to register node record [rec=" + record +
", error=" + pe + "].");
}
return false;
}
@@ -136,8 +129,8 @@ public class PeerManager
// register ourselves as a client observer
PresentsServer.clmgr.addClientObserver(this);
// and start our peer refresh interval (this need not use a runqueue as
// all it will do is post an invoker unit)
// and start our peer refresh interval (this need not use a runqueue as all it will do is
// post an invoker unit)
new Interval() {
public void expired () {
refreshPeers();
@@ -149,9 +142,8 @@ public class PeerManager
}
/**
* Call this when the server is shutting down to give this node a chance to
* cleanly logoff from its peers and remove its record from the nodes
* table.
* Call this when the server is shutting down to give this node a chance to cleanly logoff from
* its peers and remove its record from the nodes table.
*/
public void shutdown ()
{
@@ -169,8 +161,8 @@ public class PeerManager
*/
public boolean isAuthenticPeer (PeerCreds creds)
{
return PeerCreds.createPassword(
creds.getNodeName(), _sharedSecret).equals(creds.getPassword());
return PeerCreds.createPassword(creds.getNodeName(), _sharedSecret).equals(
creds.getPassword());
}
// documentation inherited from interface ClientManager.ClientObserver
@@ -187,10 +179,8 @@ public class PeerManager
// sanity check
if (_nodeobj.clients.contains(clinfo)) {
log.warning("Received clientSessionDidStart() for already " +
"registered client!? " +
"[old=" + _nodeobj.clients.get(clinfo.getKey()) +
", new=" + clinfo + "].");
log.warning("Received clientSessionDidStart() for already registered client!? " +
"[old=" + _nodeobj.clients.get(clinfo.getKey()) + ", new=" + clinfo + "].");
// go ahead and update the record
_nodeobj.updateClients(clinfo);
} else {
@@ -206,9 +196,9 @@ public class PeerManager
return;
}
// we scan through the list instead of relying on ClientInfo.getKey()
// because we want derived classes to be able to override that for
// lookups that happen way more frequently than logging off
// we scan through the list instead of relying on ClientInfo.getKey() because we want
// derived classes to be able to override that for lookups that happen way more frequently
// than logging off
Name username = client.getCredentials().getUsername();
for (ClientInfo clinfo : _nodeobj.clients) {
if (clinfo.username.equals(username)) {
@@ -216,8 +206,7 @@ public class PeerManager
return;
}
}
log.warning("Session ended for unregistered client " +
"[who=" + username + "].");
log.warning("Session ended for unregistered client [who=" + username + "].");
}
/**
@@ -228,8 +217,8 @@ public class PeerManager
}
/**
* Reloads the list of peer nodes from our table and refreshes each with a
* call to {@link #refreshPeer}.
* Reloads the list of peer nodes from our table and refreshes each with a call to {@link
* #refreshPeer}.
*/
protected void refreshPeers ()
{
@@ -253,8 +242,7 @@ public class PeerManager
try {
refreshPeer(record);
} catch (Exception e) {
log.log(Level.WARNING, "Failure refreshing peer " +
record + ".", e);
log.log(Level.WARNING, "Failure refreshing peer " + record + ".", e);
}
}
}
@@ -263,8 +251,8 @@ public class PeerManager
}
/**
* Ensures that we have a connection to the specified node if it has
* checked in since we last failed to connect.
* Ensures that we have a connection to the specified node if it has checked in since we last
* failed to connect.
*/
protected void refreshPeer (NodeRecord record)
{
@@ -276,8 +264,8 @@ public class PeerManager
}
/**
* Creates the appropriate derived class of {@link NodeObject} which will
* be registered with the distributed object system.
* Creates the appropriate derived class of {@link NodeObject} which will be registered with
* the distributed object system.
*/
protected NodeObject createNodeObject ()
{
@@ -285,8 +273,8 @@ public class PeerManager
}
/**
* Creates a {@link ClientInfo} record which will subsequently be
* initialized by a call to {@link #initClientInfo}.
* Creates a {@link ClientInfo} record which will subsequently be initialized by a call to
* {@link #initClientInfo}.
*/
protected ClientInfo createClientInfo ()
{
@@ -302,8 +290,7 @@ public class PeerManager
}
/**
* Creates a {@link PeerNode} to manage our connection to the specified
* peer.
* Creates a {@link PeerNode} to manage our connection to the specified peer.
*/
protected PeerNode createPeerNode (NodeRecord record)
{
@@ -333,8 +320,8 @@ public class PeerManager
public void refresh (NodeRecord record)
{
// if the hostname of this node changed, kill our existing client
// connection and connect anew
// if the hostname of this node changed, kill our existing client connection and
// connect anew
if (!record.hostName.equals(_record.hostName) &&
_client.isActive()) {
_client.logoff(false);
@@ -345,8 +332,8 @@ public class PeerManager
return;
}
// if our client hasn't updated its record since we last tried to
// logon, then just chill
// if our client hasn't updated its record since we last tried to logon, then just
// chill
if (_lastConnectStamp > record.lastUpdated.getTime()) {
log.fine("Not reconnecting to stale client [record=" + _record +
", lastTry=" + new Date(_lastConnectStamp) + "].");
@@ -354,8 +341,7 @@ public class PeerManager
}
// otherwise configure our client with the right bits and logon
_client.setCredentials(
new PeerCreds(_record.nodeName, _sharedSecret));
_client.setCredentials(new PeerCreds(_record.nodeName, _sharedSecret));
_client.setServer(record.hostName, new int[] { _record.port });
_client.logon();
_lastConnectStamp = System.currentTimeMillis();
@@ -388,8 +374,7 @@ public class PeerManager
log.info("Connected to peer " + _record + ".");
// subscribe to this peer's node object
PeerBootstrapData pdata = (PeerBootstrapData)
client.getBootstrapData();
PeerBootstrapData pdata = (PeerBootstrapData)client.getBootstrapData();
client.getDObjectManager().subscribeToObject(pdata.nodeOid, this);
}