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Use a node domain per message to stabilize the server

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This commit is contained in:
Marcel Klehr 2013-03-23 22:22:14 +01:00
parent 35e4891217
commit 0a468e92b6
1 changed files with 91 additions and 82 deletions
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173
src/node/handler/PadMessageHandler.js
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@ -35,6 +35,7 @@ var messageLogger = log4js.getLogger("message");
var accessLogger = log4js.getLogger("access");
var _ = require('underscore');
var hooks = require("ep_etherpad-lite/static/js/pluginfw/hooks.js");
var domain = require("domain");
/**
* A associative array that saves informations about a session
@ -148,92 +149,100 @@ exports.handleMessage = function(client, message)
messageLogger.warn("Message has no type attribute!");
return;
}
var handleMessageHook = function(callback){
var dropMessage = false;
// Call handleMessage hook. If a plugin returns null, the message will be dropped. Note that for all messages
// handleMessage will be called, even if the client is not authorized
hooks.aCallAll("handleMessage", { client: client, message: message }, function ( err, messages ) {
if(ERR(err, callback)) return;
var msgDomain = domain.create()
msgDomain.on('error', function(er) {
messageLogger.warn('Error in message:')
messageLogger.warn(er.stack? er.stack : er)
msgDomain.dispose()
})
msgDomain.run(function() {
var handleMessageHook = function(callback){
var dropMessage = false;
_.each(messages, function(newMessage){
if ( newMessage === null ) {
dropMessage = true;
}
});
// If no plugins explicitly told us to drop the message, its ok to proceed
if(!dropMessage){ callback() };
});
}
var finalHandler = function () {
//Check what type of message we get and delegate to the other methodes
if(message.type == "CLIENT_READY") {
handleClientReady(client, message);
} else if(message.type == "CHANGESET_REQ") {
handleChangesetRequest(client, message);
} else if(message.type == "COLLABROOM") {
if (sessioninfos[client.id].readonly) {
messageLogger.warn("Dropped message, COLLABROOM for readonly pad");
} else if (message.data.type == "USER_CHANGES") {
handleUserChanges(client, message);
} else if (message.data.type == "USERINFO_UPDATE") {
handleUserInfoUpdate(client, message);
} else if (message.data.type == "CHAT_MESSAGE") {
handleChatMessage(client, message);
} else if (message.data.type == "GET_CHAT_MESSAGES") {
handleGetChatMessages(client, message);
} else if (message.data.type == "SAVE_REVISION") {
handleSaveRevisionMessage(client, message);
} else if (message.data.type == "CLIENT_MESSAGE" &&
message.data.payload != null &&
message.data.payload.type == "suggestUserName") {
handleSuggestUserName(client, message);
} else {
messageLogger.warn("Dropped message, unknown COLLABROOM Data Type " + message.data.type);
}
} else {
messageLogger.warn("Dropped message, unknown Message Type " + message.type);
}
};
if (message) {
async.series([
handleMessageHook,
//check permissions
function(callback)
{
// Call handleMessage hook. If a plugin returns null, the message will be dropped. Note that for all messages
// handleMessage will be called, even if the client is not authorized
hooks.aCallAll("handleMessage", { client: client, message: message }, function ( err, messages ) {
if(ERR(err, callback)) return;
// If the message has a padId we assume the client is already known to the server and needs no re-authorization
if(!message.padId)
return callback();
// Note: message.sessionID is an entirely different kind of
// session from the sessions we use here! Beware! FIXME: Call
// our "sessions" "connections".
// FIXME: Use a hook instead
// FIXME: Allow to override readwrite access with readonly
securityManager.checkAccess(message.padId, message.sessionID, message.token, message.password, function(err, statusObject)
{
if(ERR(err, callback)) return;
//access was granted
if(statusObject.accessStatus == "grant")
{
callback();
}
//no access, send the client a message that tell him why
else
{
client.json.send({accessStatus: statusObject.accessStatus})
_.each(messages, function(newMessage){
if ( newMessage === null ) {
dropMessage = true;
}
});
},
finalHandler
]);
}
// If no plugins explicitly told us to drop the message, its ok to proceed
if(!dropMessage){ callback() };
});
}
var finalHandler = function () {
//Check what type of message we get and delegate to the other methodes
if(message.type == "CLIENT_READY") {
handleClientReady(client, message);
} else if(message.type == "CHANGESET_REQ") {
handleChangesetRequest(client, message);
} else if(message.type == "COLLABROOM") {
if (sessioninfos[client.id].readonly) {
messageLogger.warn("Dropped message, COLLABROOM for readonly pad");
} else if (message.data.type == "USER_CHANGES") {
handleUserChanges(client, message);
} else if (message.data.type == "USERINFO_UPDATE") {
handleUserInfoUpdate(client, message);
} else if (message.data.type == "CHAT_MESSAGE") {
handleChatMessage(client, message);
} else if (message.data.type == "GET_CHAT_MESSAGES") {
handleGetChatMessages(client, message);
} else if (message.data.type == "SAVE_REVISION") {
handleSaveRevisionMessage(client, message);
} else if (message.data.type == "CLIENT_MESSAGE" &&
message.data.payload != null &&
message.data.payload.type == "suggestUserName") {
handleSuggestUserName(client, message);
} else {
messageLogger.warn("Dropped message, unknown COLLABROOM Data Type " + message.data.type);
}
} else {
messageLogger.warn("Dropped message, unknown Message Type " + message.type);
}
};
if (message) {
async.series([
handleMessageHook,
//check permissions
function(callback)
{
// If the message has a padId we assume the client is already known to the server and needs no re-authorization
if(!message.padId)
return callback();
// Note: message.sessionID is an entirely different kind of
// session from the sessions we use here! Beware! FIXME: Call
// our "sessions" "connections".
// FIXME: Use a hook instead
// FIXME: Allow to override readwrite access with readonly
securityManager.checkAccess(message.padId, message.sessionID, message.token, message.password, function(err, statusObject)
{
if(ERR(err, callback)) return;
//access was granted
if(statusObject.accessStatus == "grant")
{
callback();
}
//no access, send the client a message that tell him why
else
{
client.json.send({accessStatus: statusObject.accessStatus})
}
});
},
finalHandler
]);
}
});
}