Ok. I've done a patch and will upload it if the following config is ok by Anthony.<br><br>(Either create odbc.conf.xml in autoload_configs or add it directly to freeswitch.xml)<br><br> <section name="odbc" description="odbc general options"><br>
<connection_check>SELECT 1</connection_check><br> </section><br><br>My patch will load that string when a new connection is created.<br><br><div class="gmail_quote">On Wed, Feb 20, 2008 at 3:40 PM, <<a href="mailto:freeswitch@dalethatcher.com">freeswitch@dalethatcher.com</a>> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Could I suggest the 'db check' query be configurable? Oracle is another<br>
database which doesn't work with the 'select 1' and needs 'select 1 from<br>
dual'. Then you can have the default as 'select 1' and let the end user<br>
fiddle with the config for their own particular broken DB.<br>
<br>
Adding in special code to handle every database out there is going to be<br>
a big headache for you. If it isn't already.<br>
<br>
thanks,<br>
<br>
- Dale<br>
<div><div></div><div class="Wj3C7c"><br>
On Wed, Feb 20, 2008 at 06:08:08AM -0800, Anthony Minessale wrote:<br>
> Many databases break silently or the connection drops<br>
> without any way to know for sure w/o trying to use it.<br>
><br>
> I choose to ensure in the core that the data is connected.<br>
> executing "select 1" is a small price to pay to make sure<br>
> that the database is connected considering the importance<br>
> of persistent connectivity in the sip, jingle and call<br>
> limit databases as well as the javascript that rely on it.<br>
><br>
> All of those applications to make the safe<br>
> assumption that the core will keep the db connected and<br>
> to change that would be drastic behavior change and<br>
> destabilize the code on the eve of our release.<br>
><br>
> Therefore i guess we should focus on better heuristics<br>
> to detect firebird, preferably based on the driver name<br>
> and not by doing a 2nd sql stmt every time.<br>
><br>
><br>
><br>
> Anthony Minessale II<br>
><br>
> FreeSWITCH <a href="http://www.freeswitch.org/" target="_blank">http://www.freeswitch.org/</a><br>
> ClueCon <a href="http://www.cluecon.com/" target="_blank">http://www.cluecon.com/</a><br>
><br>
> AIM: anthm<br>
> <a href="mailto:MSN:anthony_minessale@hotmail.com">MSN:anthony_minessale@hotmail.com</a><br>
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><br>
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> <a href="mailto:sip:888@conference.freeswitch.org">sip:888@conference.freeswitch.org</a><br>
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> pstn:213-799-1400<br>
><br>
><br>
> ----- Original Message ----<br>
> From: David Revill <<a href="mailto:davidrevill@datarun.co.uk">davidrevill@datarun.co.uk</a>><br>
> To: <a href="mailto:freeswitch-users@lists.freeswitch.org">freeswitch-users@lists.freeswitch.org</a><br>
> Sent: Tuesday, February 19, 2008 4:37:28 PM<br>
> Subject: Re: [Freeswitch-users] Spidermonkey ODBC<br>
><br>
><br>
><br>
><br>
><br>
</div></div>> DIV {<br>
> MARGIN:0px;}<br>
<div><div></div><div class="Wj3C7c">><br>
><br>
><br>
><br>
> Unfortunately, there isn't a universal ansi sql<br>
> stmt that will do it as the only statements which can be guaranteed to follow<br>
> the ansi standard are the simple select, update and delete statements which rely<br>
> on knowing some table name .<br>
><br>
><br>
><br>
><br>
> I think we are trying to solve a problem which need<br>
> not exist. The Javascript application should handle the idle timeout. It<br>
> should close the connection if it will not be using it for a while,<br>
> and,if it needs to, can do what db_is_up is attempting to do in the<br>
> application code. Testing for connection before every query seems an<br>
> unneccessary overhead.<br>
><br>
><br>
><br>
><br>
> ----- Original Message -----<br>
><br>
> From:<br>
> Anthony<br>
> Minessale<br>
><br>
> To: <a href="mailto:freeswitch-users@lists.freeswitch.org">freeswitch-users@lists.freeswitch.org</a><br>
><br>
><br>
> Sent: Tuesday, February 19, 2008 6:38<br>
> PM<br>
><br>
> Subject: Re: [Freeswitch-users]<br>
> Spidermonkey ODBC<br>
><br>
><br>
><br>
><br>
> is<br>
> there some universal ansi sql stmt that is small and harmless<br>
> but is<br>
> supported by everything? to replace "select 1"<br>
><br>
><br>
><br>
><br>
><br>
> Anthony Minessale II<br>
><br>
> FreeSWITCH <a href="http://www.freeswitch.org/" target="_blank">http://www.freeswitch.org/</a><br>
> ClueCon <a href="http://www.cluecon.com/" target="_blank">http://www.cluecon.com/</a><br>
><br>
> AIM:<br>
> anthm<br>
> <a href="mailto:MSN:anthony_minessale@hotmail.com">MSN:anthony_minessale@hotmail.com</a><br>
> GTALK/JABBER/PAYPAL:<a href="mailto:anthony.minessale@gmail.com">anthony.minessale@gmail.com</a><br>
> IRC:<br>
> <a href="http://irc.freenode.net" target="_blank">irc.freenode.net</a> #freeswitch<br>
><br>
><br>
> FreeSWITCH Developer<br>
> Conference<br>
> <a href="mailto:sip:888@conference.freeswitch.org">sip:888@conference.freeswitch.org</a><br>
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> <a href="mailto:googletalk:conf+888@conference.freeswitch.org">googletalk:conf+888@conference.freeswitch.org</a><br>
> pstn:213-799-1400<br>
><br>
><br>
><br>
><br>
> -----<br>
> Original Message ----<br>
> From: David Revill<br>
> <<a href="mailto:davidrevill@datarun.co.uk">davidrevill@datarun.co.uk</a>><br>
> To:<br>
> <a href="mailto:freeswitch-users@lists.freeswitch.org">freeswitch-users@lists.freeswitch.org</a><br>
> Sent: Tuesday, February 19, 2008<br>
> 6:56:31 AM<br>
> Subject: Re: [Freeswitch-users] Spidermonkey ODBC<br>
><br>
><br>
><br>
><br>
> One way to detect firebird would be to put the<br>
> 'Select first 1 * from RDB$relations' into switch_odbc_handle_connect.<br>
> If it succeeds then it is Firebird. A better query might be 'select * from<br>
> rdb$database' as the system table rdb$database only ever has 1<br>
> record.<br>
><br>
><br>
> -----<br>
> Original Message -----<br>
><br>
> From:<br>
> Jonas<br>
> Gauffin<br>
><br>
> To:<br>
> <a href="mailto:freeswitch-users@lists.freeswitch.org">freeswitch-users@lists.freeswitch.org</a><br>
><br>
><br>
> Sent:<br>
> Tuesday, February 19, 2008 12:18 PM<br>
><br>
> Subject:<br>
> Re: [Freeswitch-users] Spidermonkey ODBC<br>
><br>
><br>
><br>
> I''ve only tested it with firebird on windows. As you said,<br>
> your driver name doesnt match any of the names I used to detect if it's<br>
> firebird.<br>
><br>
> The problem is that most databases supports "SELECT 1" as a<br>
> query. It will always be successful if the the connection is up. However,<br>
> firebird did not support "SELECT 1" and therefore i did query the system<br>
> database instead.<br>
><br>
> If the firebird check fails, it will try to invoke<br>
> "SELECT 1", and on firebird that query will fail. And the failure is<br>
> interpreted as the connection is down, and therefore it tries to<br>
> reconnect.<br>
><br>
> That's probably why you get that error. If you have any<br>
> other idea on how I can detect if it's a firebird db, please let me know and<br>
> i'll fix the odbc code.<br>
><br>
><br>
> On Feb 19, 2008 1:05 PM, David Revill <<a href="mailto:davidrevill@datarun.co.uk">davidrevill@datarun.co.uk</a>><br>
> wrote:<br>
><br>
><br>
><br>
> That's a fair point, but db_is_up is only<br>
> called in 2 places and the attempted re-connect could be done if the<br>
> exec'd query fails. That way it would not be dependant on the name of the<br>
> driver.<br>
><br>
><br>
><br>
> In my application, the database was queried<br>
> at the beginning of the script and the connection closed. It was<br>
> explicitly re-connected at the end to post data, so the connection timeout<br>
> was not an issue.<br>
><br>
><br>
><br>
> -----<br>
> Original Message -----<br>
><br>
> From:<br>
> Jonas Gauffin<br>
><br>
> To:<br>
> <a href="mailto:freeswitch-users@lists.freeswitch.org">freeswitch-users@lists.freeswitch.org</a><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
> Sent:<br>
> Tuesday, February 19, 2008 10:35 AM<br>
><br>
> Subject:<br>
> Re: [Freeswitch-users] Spidermonkey ODBC<br>
><br>
><br>
><br>
> I did that code a couple of months ago.<br>
> The function<br>
> was added since connections are closed if they are idle too long, and<br>
> they were not reconnected again if that happened.<br>
><br>
><br>
><br>
> On Feb 19, 2008 11:22 AM, David Revill <<a href="mailto:davidrevill@datarun.co.uk">davidrevill@datarun.co.uk</a>><br>
> wrote:<br>
><br>
><br>
><br>
> The problem is in switch_odbc.c function<br>
> db_is_up. It assumes that the variable is_firebird is true, but the<br>
> setting of this variable assumes that the Firebird driver name has<br>
> 'FIREBIRD', 'FB64' or 'FB32' in it.<br>
><br>
><br>
><br>
> I commented out the code in<br>
> db_is_up and just returned a true value, as on closer inspection<br>
> could not see the point of this function.<br>
><br>
><br>
><br>
> David Revill<br>
><br>
><br>
><br>
> -----<br>
> Original Message -----<br>
><br>
> From:<br>
> David Revill<br>
><br>
> To:<br>
> <a href="mailto:freeswitch-users@lists.freeswitch.org">freeswitch-users@lists.freeswitch.org</a><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
> Sent:<br>
> Tuesday, February 19, 2008 8:58 AM<br>
><br>
> Subject:<br>
> Re: [Freeswitch-users] Spidermonkey ODBC<br>
><br>
><br>
><br>
><br>
> I spotted this error a few months ago,<br>
> and to my shame did not let everyone know. I have since<br>
> archived the project so cannot point you to the actual code.<br>
> However, the problem is that it assumes the name of the<br>
> Firebird Driver (FB64?) to set a boolean, so that it handle<br>
> the connection test differently.<br>
><br>
><br>
><br>
> When looking at the actual code, I<br>
> actually felt that the connection test was redundant, as all it did<br>
> was a select from a system table. This meant it was doing two<br>
> queries for everyone required. (One to see if it could do a query,<br>
> and then one to do it). I therefore commented the connection test<br>
> function out.<br>
><br>
><br>
><br>
> regards<br>
><br>
><br>
><br>
> David Revill<br>
><br>
><br>
> -----<br>
> Original Message -----<br>
><br>
> From:<br>
> Steven Brown<br>
><br>
> To:<br>
> <a href="mailto:freeswitch-users@lists.freeswitch.org">freeswitch-users@lists.freeswitch.org</a><br>
><br>
><br>
> Sent:<br>
> Monday, February 18, 2008 11:34 PM<br>
><br>
> Subject:<br>
> [Freeswitch-users] Spidermonkey ODBC<br>
><br>
><br>
><br>
><br>
> Hi,<br>
><br>
><br>
><br>
> I'm experimenting with<br>
> spidermonkey for JavaScript call control, the basics seem<br>
> fine and I'm now trying to connect to an existing Firebird<br>
> database, the Firebird odbc lib is installed ok as is unixODBC and<br>
> I can confirm this and access the db no problem with isql,<br>
> something strange happens though when I connect in spidermonkey,<br>
> basically the odbc connection is made successfully, but then as<br>
> soon as I call either exec or query the odbc connection starts to<br>
> drop and re-connect continuously,<br>
><br>
><br>
><br>
> the isql output is below<br>
><br>
><br>
><br>
><br>
> isql -v<br>
> test<br>
> +---------------------------------------+<br>
> |<br>
> Connected!<br>
> |<br>
> |<br>
> |<br>
> |<br>
> sql-statement<br>
> |<br>
> | help<br>
> [tablename]<br>
> |<br>
> |<br>
> quit<br>
> |<br>
> |<br>
> |<br>
> +---------------------------------------+<br>
> SQL> select<br>
> first 1 * from<br>
> pool_phones<br>
> +---------------------+------------+<br>
> |<br>
> GSMNO<br>
> | ORGNO<br>
> |<br>
> +---------------------+------------+<br>
> |<br>
> 0712345678 |<br>
> 1<br>
> |<br>
> +---------------------+------------+<br>
> SQLRowCount returns<br>
> 1<br>
> 1 rows fetched<br>
> SQL><br>
><br>
><br>
> however the following test code<br>
> calling the same query<br>
><br>
><br>
><br>
> use("ODBC");<br>
><br>
> var db = new<br>
> ODBC("test","SYSDBA","masterkey");<br>
> db.connect();<br>
> db.query("select<br>
> first 1 * from pool_phones");<br>
><br>
> db.nextRow();<br>
><br>
> row =<br>
> db.getData();<br>
> console_log("INFO","HELLO " + row["GSMNO"]<br>
> + "\n");<br>
><br>
> exit();<br>
><br>
><br>
><br>
> gives the following output and then<br>
> just loops disconnecting and reconnecting until I shutdown<br>
> freeswitch<br>
><br>
><br>
> 2008-02-18 23:26:03 [DEBUG]<br>
> switch_core_state_machine.c:144 switch_core_standard_on_execute()<br>
> sofia/default/1000@192.168.0.7:5060 Execute<br>
> javascript(/usr/scripts/test1.js)<br>
> 2008-02-18 23:26:03 [DEBUG]<br>
> mod_spidermonkey.c:3150 js_api_use() Loading ODBC<br>
> 2008-02-18<br>
> 23:26:03 [DEBUG] switch_odbc.c:145 switch_odbc_handle_connect()<br>
> Connecting test<br>
> 2008-02-18 23:26:03 [DEBUG] switch_odbc.c:174<br>
> switch_odbc_handle_connect() Connected to [test]<br>
> 2008-02-18<br>
> 23:26:03 [DEBUG] switch_odbc.c:95 switch_odbc_handle_disconnect()<br>
> Disconnected 0 from [test]<br>
> 2008-02-18 23:26:03 [DEBUG]<br>
> switch_odbc.c:142 switch_odbc_handle_connect() Re-connecting<br>
> test<br>
> 2008-02-18 23:26:03 [DEBUG] switch_odbc.c:145<br>
> switch_odbc_handle_connect() Connecting test<br>
> 2008-02-18<br>
> 23:26:03 [DEBUG] switch_odbc.c:174 switch_odbc_handle_connect()<br>
> Connected to [test]<br>
> 2008-02-18 23:26:03 [CRIT]<br>
> switch_odbc.c:234 db_is_up() The sql server is not responding for<br>
> DSN test []<br>
> 2008-02-18 23:26:03 [INFO] switch_odbc.c:239<br>
> db_is_up() The connection has been re-established<br>
><br>
> ...<br>
><br>
> Any ideas much appreciated<br>
><br>
> Thanks<br>
><br>
> Steve<br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
> _______________________________________________<br>
> Freeswitch-users<br>
> mailing list<br>
> <a href="mailto:Freeswitch-users@lists.freeswitch.org">Freeswitch-users@lists.freeswitch.org</a><br>
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