* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
- * InspIRCd is copyright (C) 2002-2004 ChatSpike-Dev.
- * E-mail:
- * <brain@chatspike.net>
- * <Craig@chatspike.net>
- *
- * Written by Craig Edwards, Craig McLure, and others.
+ * InspIRCd: (C) 2002-2007 InspIRCd Development Team
+ * See: http://www.inspircd.org/wiki/index.php/Credits
+ *
* This program is free but copyrighted software; see
- * the file COPYING for details.
+ * the file COPYING for details.
*
* ---------------------------------------------------
*/
-using namespace std;
-
-#include <stdio.h>
-#include <string>
+#include "inspircd.h"
#include <mysql.h>
#include <pthread.h>
#include "users.h"
#include "channels.h"
#include "modules.h"
-#include "helperfuncs.h"
#include "m_sqlv2.h"
/* VERSION 2 API: With nonblocking (threaded) requests */
/* $ModDesc: SQL Service Provider module for all other m_sql* modules */
-/* $CompileFlags: `mysql_config --include` */
-/* $LinkerFlags: `mysql_config --libs_r` `perl ../mysql_rpath.pl` */
+/* $CompileFlags: exec("mysql_config --include") */
+/* $LinkerFlags: exec("mysql_config --libs_r") rpath("mysql_config --libs_r") */
+/* $ModDep: m_sqlv2.h */
+
+/* THE NONBLOCKING MYSQL API!
+ *
+ * MySQL provides no nonblocking (asyncronous) API of its own, and its developers recommend
+ * that instead, you should thread your program. This is what i've done here to allow for
+ * asyncronous SQL requests via mysql. The way this works is as follows:
+ *
+ * The module spawns a thread via pthreads, and performs its mysql queries in this thread,
+ * using a queue with priorities. There is a mutex on either end which prevents two threads
+ * adjusting the queue at the same time, and crashing the ircd. Every 50 milliseconds, the
+ * worker thread wakes up, and checks if there is a request at the head of its queue.
+ * If there is, it processes this request, blocking the worker thread but leaving the ircd
+ * thread to go about its business as usual. During this period, the ircd thread is able
+ * to insert futher pending requests into the queue.
+ *
+ * Once the processing of a request is complete, it is removed from the incoming queue to
+ * an outgoing queue, and initialized as a 'response'. The worker thread then signals the
+ * ircd thread (via a loopback socket) of the fact a result is available, by sending the
+ * connection ID through the connection.
+ *
+ * The ircd thread then mutexes the queue once more, reads the outbound response off the head
+ * of the queue, and sends it on its way to the original calling module.
+ *
+ * XXX: You might be asking "why doesnt he just send the response from within the worker thread?"
+ * The answer to this is simple. The majority of InspIRCd, and in fact most ircd's are not
+ * threadsafe. This module is designed to be threadsafe and is careful with its use of threads,
+ * however, if we were to call a module's OnRequest even from within a thread which was not the
+ * one the module was originally instantiated upon, there is a chance of all hell breaking loose
+ * if a module is ever put in a re-enterant state (stack corruption could occur, crashes, data
+ * corruption, and worse, so DONT think about it until the day comes when InspIRCd is 100%
+ * gauranteed threadsafe!)
+ *
+ * For a diagram of this system please see http://www.inspircd.org/wiki/Mysql2
+ */
class SQLConnection;
class Notifier;
-extern InspIRCd* ServerInstance;
+
typedef std::map<std::string, SQLConnection*> ConnMap;
bool giveup = false;
static Module* SQLModule = NULL;
typedef std::deque<SQLresult*> ResultQueue;
-class QueryQueue : public classbase
-{
-private:
- typedef std::deque<SQLrequest> ReqDeque;
-
- ReqDeque priority; /* The priority queue */
- ReqDeque normal; /* The 'normal' queue */
- enum { PRI, NOR, NON } which; /* Which queue the currently active element is at the front of */
-
-public:
- QueryQueue()
- : which(NON)
- {
- }
-
- void push(const SQLrequest &q)
- {
- log(DEBUG, "QueryQueue::push(): Adding %s query to queue: %s", ((q.pri) ? "priority" : "non-priority"), q.query.q.c_str());
-
- if(q.pri)
- priority.push_back(q);
- else
- normal.push_back(q);
- }
-
- void pop()
- {
- if((which == PRI) && priority.size())
- {
- priority.pop_front();
- }
- else if((which == NOR) && normal.size())
- {
- normal.pop_front();
- }
-
- /* Reset this */
- which = NON;
-
- /* Silently do nothing if there was no element to pop() */
- }
-
- SQLrequest& front()
- {
- switch(which)
- {
- case PRI:
- return priority.front();
- case NOR:
- return normal.front();
- default:
- if(priority.size())
- {
- which = PRI;
- return priority.front();
- }
-
- if(normal.size())
- {
- which = NOR;
- return normal.front();
- }
-
- /* This will probably result in a segfault,
- * but the caller should have checked totalsize()
- * first so..meh - moron :p
- */
-
- return priority.front();
- }
- }
-
- std::pair<int, int> size()
- {
- return std::make_pair(priority.size(), normal.size());
- }
-
- int totalsize()
- {
- return priority.size() + normal.size();
- }
-
- void PurgeModule(Module* mod)
- {
- DoPurgeModule(mod, priority);
- DoPurgeModule(mod, normal);
- }
-
-private:
- void DoPurgeModule(Module* mod, ReqDeque& q)
- {
- for(ReqDeque::iterator iter = q.begin(); iter != q.end(); iter++)
- {
- if(iter->GetSource() == mod)
- {
- if(iter->id == front().id)
- {
- /* It's the currently active query.. :x */
- iter->SetSource(NULL);
- }
- else
- {
- /* It hasn't been executed yet..just remove it */
- iter = q.erase(iter);
- }
- }
- }
- }
-};
-
/* A mutex to wrap around queue accesses */
pthread_mutex_t queue_mutex = PTHREAD_MUTEX_INITIALIZER;
pthread_mutex_t results_mutex = PTHREAD_MUTEX_INITIALIZER;
+pthread_mutex_t logging_mutex = PTHREAD_MUTEX_INITIALIZER;
+
+/** Represents a mysql result set
+ */
class MySQLresult : public SQLresult
{
int currentrow;
- //std::vector<std::map<std::string,std::string> > results;
std::vector<std::string> colnames;
std::vector<SQLfieldList> fieldlists;
SQLfieldMap* fieldmap;
+ SQLfieldMap fieldmap2;
+ SQLfieldList emptyfieldlist;
int rows;
- int cols;
public:
- MySQLresult(Module* self, Module* to, MYSQL_RES* res, int affected_rows) : SQLresult(self, to), currentrow(0), fieldmap(NULL)
+ MySQLresult(Module* self, Module* to, MYSQL_RES* res, int affected_rows, unsigned int id) : SQLresult(self, to, id), currentrow(0), fieldmap(NULL)
{
/* A number of affected rows from from mysql_affected_rows.
*/
fieldlists.clear();
- rows = affected_rows;
- fieldlists.resize(rows);
- unsigned int field_count;
+ rows = 0;
+ if (affected_rows >= 1)
+ {
+ rows = affected_rows;
+ fieldlists.resize(rows);
+ }
+ unsigned int field_count = 0;
if (res)
{
MYSQL_ROW row;
int n = 0;
while ((row = mysql_fetch_row(res)))
{
+ if (fieldlists.size() < (unsigned int)rows+1)
+ {
+ fieldlists.resize(fieldlists.size()+1);
+ }
field_count = 0;
MYSQL_FIELD *fields = mysql_fetch_fields(res);
if(mysql_num_fields(res) == 0)
{
std::string a = (fields[field_count].name ? fields[field_count].name : "");
std::string b = (row[field_count] ? row[field_count] : "");
- SQLfield sqlf(a, !row[field_count]);
+ SQLfield sqlf(b, !row[field_count]);
colnames.push_back(a);
fieldlists[n].push_back(sqlf);
field_count++;
}
n++;
}
+ rows++;
}
- cols = mysql_num_fields(res);
mysql_free_result(res);
}
- cols = field_count;
- log(DEBUG, "Created new MySQL result; %d rows, %d columns", rows, cols);
}
- MySQLresult(Module* self, Module* to, SQLerror e) : SQLresult(self, to), currentrow(0), rows(0), cols(0)
+ MySQLresult(Module* self, Module* to, SQLerror e, unsigned int id) : SQLresult(self, to, id), currentrow(0)
{
+ rows = 0;
error = e;
}
virtual int Cols()
{
- return cols;
+ return colnames.size();
}
virtual std::string ColName(int column)
virtual SQLfield GetValue(int row, int column)
{
- if ((row >= 0) && (row < rows) && (column >= 0) && (column < cols))
+ if ((row >= 0) && (row < rows) && (column >= 0) && (column < Cols()))
{
return fieldlists[row][column];
}
- log(DEBUG,"Danger will robinson, we don't have row %d, column %d!", row, column);
throw SQLbadColName();
/* XXX: We never actually get here because of the throw */
virtual SQLfieldList& GetRow()
{
- return fieldlists[currentrow];
+ if (currentrow < rows)
+ return fieldlists[currentrow];
+ else
+ return emptyfieldlist;
}
virtual SQLfieldMap& GetRowMap()
{
- fieldmap = new SQLfieldMap();
-
- for (int i = 0; i < cols; i++)
+ fieldmap2.clear();
+
+ if (currentrow < rows)
{
- fieldmap->insert(std::make_pair(colnames[cols],GetValue(currentrow, i)));
+ for (int i = 0; i < Cols(); i++)
+ {
+ fieldmap2.insert(std::make_pair(colnames[i],GetValue(currentrow, i)));
+ }
+ currentrow++;
}
- currentrow++;
- return *fieldmap;
+ return fieldmap2;
}
virtual SQLfieldList* GetRowPtr()
{
- return &fieldlists[currentrow++];
+ SQLfieldList* fieldlist = new SQLfieldList();
+
+ if (currentrow < rows)
+ {
+ for (int i = 0; i < Rows(); i++)
+ {
+ fieldlist->push_back(fieldlists[currentrow][i]);
+ }
+ currentrow++;
+ }
+ return fieldlist;
}
virtual SQLfieldMap* GetRowMapPtr()
{
fieldmap = new SQLfieldMap();
-
- for (int i = 0; i < cols; i++)
+
+ if (currentrow < rows)
{
- fieldmap->insert(std::make_pair(colnames[cols],GetValue(currentrow, i)));
+ for (int i = 0; i < Cols(); i++)
+ {
+ fieldmap->insert(std::make_pair(colnames[i],GetValue(currentrow, i)));
+ }
+ currentrow++;
}
- currentrow++;
return fieldmap;
}
virtual void Free(SQLfieldList* fl)
{
- /* XXX: Yes, this is SUPPOSED to do nothing, we
- * dont want to free our fieldlist until we
- * destruct the object. Unlike the pgsql module,
- * we only have the one.
- */
+ delete fl;
}
};
void NotifyMainThread(SQLConnection* connection_with_new_result);
+/** Represents a connection to a mysql database
+ */
class SQLConnection : public classbase
{
protected:
MYSQL connection;
MYSQL_RES *res;
MYSQL_ROW row;
- std::string host;
- std::string user;
- std::string pass;
- std::string db;
+ SQLhost host;
std::map<std::string,std::string> thisrow;
bool Enabled;
- std::string id;
public:
QueryQueue queue;
ResultQueue rq;
- // This constructor creates an SQLConnection object with the given credentials, and creates the underlying
- // MYSQL struct, but does not connect yet.
- SQLConnection(std::string thishost, std::string thisuser, std::string thispass, std::string thisdb, const std::string &myid)
+ // This constructor creates an SQLConnection object with the given credentials, but does not connect yet.
+ SQLConnection(const SQLhost &hi) : host(hi), Enabled(false)
{
- this->Enabled = true;
- this->host = thishost;
- this->user = thisuser;
- this->pass = thispass;
- this->db = thisdb;
- this->id = myid;
+ }
+
+ ~SQLConnection()
+ {
+ Close();
}
// This method connects to the database using the credentials supplied to the constructor, and returns
unsigned int timeout = 1;
mysql_init(&connection);
mysql_options(&connection,MYSQL_OPT_CONNECT_TIMEOUT,(char*)&timeout);
- return mysql_real_connect(&connection, host.c_str(), user.c_str(), pass.c_str(), db.c_str(), 0, NULL, 0);
+ return mysql_real_connect(&connection, host.host.c_str(), host.user.c_str(), host.pass.c_str(), host.name.c_str(), host.port, NULL, 0);
}
void DoLeadingQuery()
{
+ if (!CheckConnection())
+ return;
+
/* Parse the command string and dispatch it to mysql */
SQLrequest& req = queue.front();
- log(DEBUG,"DO QUERY: %s",req.query.q.c_str());
/* Pointer to the buffer we screw around with substitution in */
char* query;
* The +1 is for null-terminating the string for mysql_real_escape_string
*/
- query = new char[req.query.q.length() + (paramlen*2)];
+ query = new char[req.query.q.length() + (paramlen*2) + 1];
queryend = query;
/* Okay, now we have a buffer large enough we need to start copying the query into it and escaping and substituting
req.query.p.pop_front();
}
else
- {
- log(DEBUG, "Found a substitution location but no parameter to substitute :|");
break;
- }
}
else
{
*queryend = 0;
- log(DEBUG, "Attempting to dispatch query: %s", query);
-
pthread_mutex_lock(&queue_mutex);
- req.query.q = std::string(query,querylength);
+ req.query.q = query;
pthread_mutex_unlock(&queue_mutex);
if (!mysql_real_query(&connection, req.query.q.data(), req.query.q.length()))
/* Successfull query */
res = mysql_use_result(&connection);
unsigned long rows = mysql_affected_rows(&connection);
- MySQLresult* r = new MySQLresult(SQLModule, req.GetSource(), res, rows);
+ MySQLresult* r = new MySQLresult(SQLModule, req.GetSource(), res, rows, req.id);
r->dbid = this->GetID();
r->query = req.query.q;
/* Put this new result onto the results queue.
{
/* XXX: See /usr/include/mysql/mysqld_error.h for a list of
* possible error numbers and error messages */
- SQLerror e((SQLerrorNum)mysql_errno(&connection), mysql_error(&connection));
- MySQLresult* r = new MySQLresult(SQLModule, req.GetSource(), e);
+ SQLerror e(QREPLY_FAIL, ConvToStr(mysql_errno(&connection)) + std::string(": ") + mysql_error(&connection));
+ MySQLresult* r = new MySQLresult(SQLModule, req.GetSource(), e, req.id);
r->dbid = this->GetID();
r->query = req.query.q;
* Pass them this connection id as what to examine
*/
+ delete[] query;
+
NotifyMainThread(this);
}
const std::string& GetID()
{
- return id;
+ return host.id;
}
std::string GetHost()
{
- return host;
+ return host.host;
}
void SetEnable(bool Enable)
return Enabled;
}
+ void Close()
+ {
+ mysql_close(&connection);
+ }
+
+ const SQLhost& GetConfHost()
+ {
+ return host;
+ }
+
};
ConnMap Connections;
-void ConnectDatabases(Server* Srv)
+bool HasHost(const SQLhost &host)
{
- for (ConnMap::iterator i = Connections.begin(); i != Connections.end(); i++)
+ for (ConnMap::iterator iter = Connections.begin(); iter != Connections.end(); iter++)
{
- i->second->SetEnable(true);
- if (i->second->Connect())
+ if (host == iter->second->GetConfHost())
+ return true;
+ }
+ return false;
+}
+
+bool HostInConf(ConfigReader* conf, const SQLhost &h)
+{
+ for(int i = 0; i < conf->Enumerate("database"); i++)
+ {
+ SQLhost host;
+ host.id = conf->ReadValue("database", "id", i);
+ host.host = conf->ReadValue("database", "hostname", i);
+ host.port = conf->ReadInteger("database", "port", i, true);
+ host.name = conf->ReadValue("database", "name", i);
+ host.user = conf->ReadValue("database", "username", i);
+ host.pass = conf->ReadValue("database", "password", i);
+ host.ssl = conf->ReadFlag("database", "ssl", i);
+ if (h == host)
+ return true;
+ }
+ return false;
+}
+
+void ClearOldConnections(ConfigReader* conf)
+{
+ ConnMap::iterator i,safei;
+ for (i = Connections.begin(); i != Connections.end(); i++)
+ {
+ if (!HostInConf(conf, i->second->GetConfHost()))
{
- Srv->Log(DEFAULT,"SQL: Successfully connected database "+i->second->GetHost());
+ DELETE(i->second);
+ safei = i;
+ --i;
+ Connections.erase(safei);
}
- else
+ }
+}
+
+void ClearAllConnections()
+{
+ ConnMap::iterator i;
+ while ((i = Connections.begin()) != Connections.end())
+ {
+ Connections.erase(i);
+ DELETE(i->second);
+ }
+}
+
+void ConnectDatabases(InspIRCd* ServerInstance)
+{
+ for (ConnMap::iterator i = Connections.begin(); i != Connections.end(); i++)
+ {
+ if (i->second->IsEnabled())
+ continue;
+
+ i->second->SetEnable(true);
+ if (!i->second->Connect())
{
- Srv->Log(DEFAULT,"SQL: Failed to connect database "+i->second->GetHost()+": Error: "+i->second->GetError());
+ /* XXX: MUTEX */
+ pthread_mutex_lock(&logging_mutex);
+ ServerInstance->Log(DEFAULT,"SQL: Failed to connect database "+i->second->GetHost()+": Error: "+i->second->GetError());
i->second->SetEnable(false);
+ pthread_mutex_unlock(&logging_mutex);
}
}
}
+void LoadDatabases(ConfigReader* conf, InspIRCd* ServerInstance)
+{
+ ClearOldConnections(conf);
+ for (int j =0; j < conf->Enumerate("database"); j++)
+ {
+ SQLhost host;
+ host.id = conf->ReadValue("database", "id", j);
+ host.host = conf->ReadValue("database", "hostname", j);
+ host.port = conf->ReadInteger("database", "port", j, true);
+ host.name = conf->ReadValue("database", "name", j);
+ host.user = conf->ReadValue("database", "username", j);
+ host.pass = conf->ReadValue("database", "password", j);
+ host.ssl = conf->ReadFlag("database", "ssl", j);
+
+ if (HasHost(host))
+ continue;
+
+ if (!host.id.empty() && !host.host.empty() && !host.name.empty() && !host.user.empty() && !host.pass.empty())
+ {
+ SQLConnection* ThisSQL = new SQLConnection(host);
+ Connections[host.id] = ThisSQL;
+ }
+ }
+ ConnectDatabases(ServerInstance);
+}
-void LoadDatabases(ConfigReader* ThisConf, Server* Srv)
+char FindCharId(const std::string &id)
{
- Srv->Log(DEFAULT,"SQL: Loading database settings");
- Connections.clear();
- Srv->Log(DEBUG,"Cleared connections");
- for (int j =0; j < ThisConf->Enumerate("database"); j++)
- {
- std::string db = ThisConf->ReadValue("database","name",j);
- std::string user = ThisConf->ReadValue("database","username",j);
- std::string pass = ThisConf->ReadValue("database","password",j);
- std::string host = ThisConf->ReadValue("database","hostname",j);
- std::string id = ThisConf->ReadValue("database","id",j);
- Srv->Log(DEBUG,"Read database settings");
- if ((db != "") && (host != "") && (user != "") && (id != "") && (pass != ""))
+ char i = 1;
+ for (ConnMap::iterator iter = Connections.begin(); iter != Connections.end(); ++iter, ++i)
+ {
+ if (iter->first == id)
{
- SQLConnection* ThisSQL = new SQLConnection(host,user,pass,db,id);
- Srv->Log(DEFAULT,"Loaded database: "+ThisSQL->GetHost());
- Connections[id] = ThisSQL;
- Srv->Log(DEBUG,"Pushed back connection");
+ return i;
}
}
- ConnectDatabases(Srv);
+ return 0;
+}
+
+ConnMap::iterator GetCharId(char id)
+{
+ char i = 1;
+ for (ConnMap::iterator iter = Connections.begin(); iter != Connections.end(); ++iter, ++i)
+ {
+ if (i == id)
+ return iter;
+ }
+ return Connections.end();
}
void NotifyMainThread(SQLConnection* connection_with_new_result)
* thread, we can just use standard connect(), and we can
* block if we like. We just send the connection id of the
* connection back.
+ *
+ * NOTE: We only send a single char down the connection, this
+ * way we know it wont get a partial read at the other end if
+ * the system is especially congested (see bug #263).
+ * The function FindCharId translates a connection name into a
+ * one character id, and GetCharId translates a character id
+ * back into an iterator.
*/
- log(DEBUG,"Notify of result on connection: %s",connection_with_new_result->GetID().c_str());
- if (send(QueueFD, connection_with_new_result->GetID().c_str(), connection_with_new_result->GetID().length()+1, 0) < 1) // add one for null terminator
- {
- log(DEBUG,"Error writing to QueueFD: %s",strerror(errno));
- }
- log(DEBUG,"Sent it on its way via fd=%d",QueueFD);
+ char id = FindCharId(connection_with_new_result->GetID());
+ send(QueueFD, &id, 1, 0);
}
void* DispatcherThread(void* arg);
-class Notifier : public InspSocket
+/** Used by m_mysql to notify one thread when the other has a result
+ */
+class Notifier : public BufferedSocket
{
- sockaddr_in sock_us;
+ insp_sockaddr sock_us;
socklen_t uslen;
- Server* Srv;
+
public:
/* Create a socket on a random port. Let the tcp stack allocate us an available port */
- Notifier(Server* S) : InspSocket("127.0.0.1", 0, true, 3000), Srv(S)
+#ifdef IPV6
+ Notifier(InspIRCd* SI) : BufferedSocket(SI, "::1", 0, true, 3000)
+#else
+ Notifier(InspIRCd* SI) : BufferedSocket(SI, "127.0.0.1", 0, true, 3000)
+#endif
{
uslen = sizeof(sock_us);
if (getsockname(this->fd,(sockaddr*)&sock_us,&uslen))
}
}
- Notifier(int newfd, char* ip, Server* S) : InspSocket(newfd, ip), Srv(S)
+ Notifier(InspIRCd* SI, int newfd, char* ip) : BufferedSocket(SI, newfd, ip)
{
- log(DEBUG,"Constructor of new socket");
}
/* Using getsockname and ntohs, we can determine which port number we were allocated */
int GetPort()
{
+#ifdef IPV6
+ return ntohs(sock_us.sin6_port);
+#else
return ntohs(sock_us.sin_port);
+#endif
}
virtual int OnIncomingConnection(int newsock, char* ip)
{
- log(DEBUG,"Inbound connection on fd %d!",newsock);
- Notifier* n = new Notifier(newsock, ip, Srv);
- Srv->AddSocket(n);
+ Notifier* n = new Notifier(this->Instance, newsock, ip);
+ n = n; /* Stop bitching at me, GCC */
return true;
}
virtual bool OnDataReady()
{
- log(DEBUG,"Inbound data!");
- char* data = this->Read();
- ConnMap::iterator iter;
-
- if (data && *data)
+ char data = 0;
+ /* NOTE: Only a single character is read so we know we
+ * cant get a partial read. (We've been told that theres
+ * data waiting, so we wont ever get EAGAIN)
+ * The function GetCharId translates a single character
+ * back into an iterator.
+ */
+ if (Instance->SE->Recv(this, &data, 1, 0) > 0)
{
- log(DEBUG,"Looking for connection %s",data);
- /* We expect to be sent a null terminated string */
- if((iter = Connections.find(data)) != Connections.end())
+ ConnMap::iterator iter = GetCharId(data);
+ if (iter != Connections.end())
{
- log(DEBUG,"Found it!");
-
/* Lock the mutex, send back the data */
pthread_mutex_lock(&results_mutex);
ResultQueue::iterator n = iter->second->rq.begin();
pthread_mutex_unlock(&results_mutex);
return true;
}
+ /* No error, but unknown id */
+ return true;
}
+ /* Erk, error on descriptor! */
return false;
}
};
+/** MySQL module
+ */
class ModuleSQL : public Module
{
public:
- Server *Srv;
+
ConfigReader *Conf;
+ InspIRCd* PublicServerInstance;
pthread_t Dispatcher;
int currid;
+ bool rehashing;
+
+ ModuleSQL(InspIRCd* Me)
+ : Module::Module(Me), rehashing(false)
+ {
+ ServerInstance->Modules->UseInterface("SQLutils");
+
+ Conf = new ConfigReader(ServerInstance);
+ PublicServerInstance = ServerInstance;
+ currid = 0;
+ SQLModule = this;
+
+ MessagePipe = new Notifier(ServerInstance);
+
+ pthread_attr_t attribs;
+ pthread_attr_init(&attribs);
+ pthread_attr_setdetachstate(&attribs, PTHREAD_CREATE_DETACHED);
+ if (pthread_create(&this->Dispatcher, &attribs, DispatcherThread, (void *)this) != 0)
+ {
+ throw ModuleException("m_mysql: Failed to create dispatcher thread: " + std::string(strerror(errno)));
+ }
+
+ if (!ServerInstance->Modules->PublishFeature("SQL", this))
+ {
+ /* Tell worker thread to exit NOW */
+ giveup = true;
+ throw ModuleException("m_mysql: Unable to publish feature 'SQL'");
+ }
+
+ ServerInstance->Modules->PublishInterface("SQL", this);
+ }
+
+ virtual ~ModuleSQL()
+ {
+ giveup = true;
+ ClearAllConnections();
+ delete Conf;
+ ServerInstance->Modules->UnpublishInterface("SQL", this);
+ ServerInstance->Modules->UnpublishFeature("SQL");
+ ServerInstance->Modules->DoneWithInterface("SQLutils");
+ }
+
void Implements(char* List)
{
char* OnRequest(Request* request)
{
- if(strcmp(SQLREQID, request->GetData()) == 0)
+ if(strcmp(SQLREQID, request->GetId()) == 0)
{
SQLrequest* req = (SQLrequest*)request;
char* returnval = NULL;
- log(DEBUG, "Got query: '%s' with %d replacement parameters on id '%s'", req->query.q.c_str(), req->query.p.size(), req->dbid.c_str());
-
if((iter = Connections.find(req->dbid)) != Connections.end())
{
- iter->second->queue.push(*req);
req->id = NewID();
+ iter->second->queue.push(*req);
returnval = SQLSUCCESS;
}
else
return returnval;
}
- log(DEBUG, "Got unsupported API version string: %s", request->GetData());
-
return NULL;
}
- ModuleSQL(Server* Me)
- : Module::Module(Me)
- {
- Srv = Me;
- Conf = new ConfigReader();
- currid = 0;
- SQLModule = this;
-
- MessagePipe = new Notifier(Srv);
- Srv->AddSocket(MessagePipe);
- log(DEBUG,"Bound notifier to 127.0.0.1:%d",MessagePipe->GetPort());
-
- pthread_attr_t attribs;
- pthread_attr_init(&attribs);
- pthread_attr_setdetachstate(&attribs, PTHREAD_CREATE_DETACHED);
- if (pthread_create(&this->Dispatcher, &attribs, DispatcherThread, (void *)this) != 0)
- {
- throw ModuleException("m_mysql: Failed to create dispatcher thread: " + std::string(strerror(errno)));
- }
- Srv->PublishFeature("SQL", this);
- Srv->PublishFeature("MySQL", this);
- }
-
- virtual ~ModuleSQL()
- {
- DELETE(Conf);
- }
-
- virtual void OnRehash(const std::string ¶meter)
+ virtual void OnRehash(User* user, const std::string ¶meter)
{
- /* TODO: set rehash bool here, which makes the dispatcher thread rehash at next opportunity */
+ rehashing = true;
}
virtual Version GetVersion()
{
- return Version(1,1,0,0,VF_VENDOR|VF_SERVICEPROVIDER);
+ return Version(1,1,0,0,VF_VENDOR|VF_SERVICEPROVIDER,API_VERSION);
}
};
void* DispatcherThread(void* arg)
{
ModuleSQL* thismodule = (ModuleSQL*)arg;
- LoadDatabases(thismodule->Conf, thismodule->Srv);
+ LoadDatabases(thismodule->Conf, thismodule->PublicServerInstance);
/* Connect back to the Notifier */
- if ((QueueFD = socket(AF_INET, SOCK_STREAM, 0)) == -1)
+ if ((QueueFD = socket(AF_FAMILY, SOCK_STREAM, 0)) == -1)
{
/* crap, we're out of sockets... */
- log(DEBUG,"QueueFD cant be created");
return NULL;
}
- log(DEBUG,"Initialize QueueFD to %d",QueueFD);
+ insp_sockaddr addr;
- sockaddr_in addr;
- in_addr ia;
- inet_aton("127.0.0.1", &ia);
- addr.sin_family = AF_INET;
+#ifdef IPV6
+ insp_aton("::1", &addr.sin6_addr);
+ addr.sin6_family = AF_FAMILY;
+ addr.sin6_port = htons(MessagePipe->GetPort());
+#else
+ insp_inaddr ia;
+ insp_aton("127.0.0.1", &ia);
+ addr.sin_family = AF_FAMILY;
addr.sin_addr = ia;
addr.sin_port = htons(MessagePipe->GetPort());
+#endif
if (connect(QueueFD, (sockaddr*)&addr,sizeof(addr)) == -1)
{
/* wtf, we cant connect to it, but we just created it! */
- log(DEBUG,"QueueFD cant connect!");
return NULL;
}
- log(DEBUG,"Connect QUEUE FD");
-
while (!giveup)
{
+ if (thismodule->rehashing)
+ {
+ /* XXX: Lock */
+ pthread_mutex_lock(&queue_mutex);
+ thismodule->rehashing = false;
+ LoadDatabases(thismodule->Conf, thismodule->PublicServerInstance);
+ pthread_mutex_unlock(&queue_mutex);
+ /* XXX: Unlock */
+ }
+
SQLConnection* conn = NULL;
/* XXX: Lock here for safety */
pthread_mutex_lock(&queue_mutex);
/* Theres an item! */
if (conn)
{
- log(DEBUG,"Process Leading query");
conn->DoLeadingQuery();
/* XXX: Lock */
return NULL;
}
-
-// stuff down here is the module-factory stuff. For basic modules you can ignore this.
-
-class ModuleSQLFactory : public ModuleFactory
-{
- public:
- ModuleSQLFactory()
- {
- }
-
- ~ModuleSQLFactory()
- {
- }
-
- virtual Module * CreateModule(Server* Me)
- {
- return new ModuleSQL(Me);
- }
-
-};
-
-
-extern "C" void * init_module( void )
-{
- return new ModuleSQLFactory;
-}
-
+MODULE_INIT(ModuleSQL)
projects / user / henk / code / inspircd.git / blobdiff