On 13/09/11 10:57, Phil Mayers wrote:
On 13/09/11 08:59, Fajar A. Nugraha wrote:
That's what we currently do (for another purpose, not for dynamic
client). However:
- I lost load-balancing feature that comes with redundant-load-balance
- imagine having to create 8 if-elsif block to properly catch error
when working with 8 sql nodes, and write the same sql query 8 times in
the configuration file. Works, but kinda messy.
With current sql module (that only reads nas list from sql during
startup/HUP) I can use one sql/mysql/*.conf to specify the query, and
have each sql instance $INCLUDE it. If we can do similar thing with
"%{sql:" expansion (e.g. store the query in some temporary internal
variable/attribute) it'd be reduce the measiness greatly, but I
haven't found out how to do it yet.
You can't. It's not currently possible, and would require changes to the
source code.
Wait, I think I've misunderstood you.
Do you mean something like this?
update control {
SQL-Query := "select * from foo where bar=1"
}
sql_redundant_xlat
# output now in control:Tmp-String-0
...then in policy.conf:
policy {
sql_redundant_xlat {
update control {
Tmp-String-0 := "%{sql1:%{control:SQL-Query}}"
}
if (control:Tmp-String-0 == "") {
update control {
Tmp-String-0 := "%{sql2:%{control:SQL-Query}}"
}
}
}
}
-
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