Bonjour Justin,
"user agent" was just an example of what the commentary could be.
You could put what you want as long as it's a string.
I agree with you and I already had this reflection that it could be
a modification that could create some problems to some.
Instead of modifying the protocol and the connection handshake, we
could maybe do that through a query. This would be a new type of
query which would only modify a field in the connection's data :
...
mysql_real_connect(....,....,....,.....);
mysql_query("SET CONNECTION_COMMENTARY 'Query from page xxx.phtml on server X'");
...
JF> 4. MySQL sticks this "user agent" into a (new)
JF> datastructure somewhere associated with
JF> the connection.
Yes. But once more "user agent" was an example. On my own I think
that there are other information more interesting that could go
there.
JF> 5. A (new) API call to MySQL can fetch this
JF> information
Not necessarily. I mentioned that this connection's commentary could
be return in the process list of Mysql (when you do a 'mysqladmin
process' for example).
Or it could be returned by a query like :
mysql_query("GET CONNECTION_COMMENTARY");
My idea of this feature is that it could really help a lot in
administrating a big database with a lot of connections.
JF> It seems to me that "all" you are asking for is
JF> 1. Change in the wire protocol
No.
JF> 2. Design change in the MySQL API
No modification of the API. "Only" a new query understood by Mysql.
I've already been at the source of some modifications in the SQL
syntax of Mysql (SQL_BUFFER_RESULT) so I know that when something
improves Mysql, something can be coded in Mysql.
JF> 3. Upgrade of all applications using the API
JF> in the world
No. By default the commentary would be empty or maybe any default
information. You would not HATE TO give a commentary.
JF> 4. Depending on all programs to stick data in
JF> this requested "comment" field in the
JF> same consistent manner, unless you are
JF> asking for more riders/piggybacks and more fields
JF> in the wire protocol such as "user agent".
Nothing new in the communication protocol.
A new field in the connection structure + a new query type.
Regards,
Alex.
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