[SR-Users] Unquoted values from #!defenv
Daniel-Constantin Mierla
miconda at gmail.com
Thu Dec 9 18:01:30 CET 2021
The example snippet you gave is with #!devenv, not with #!devenvs. Is it
what you tested in this case?
Cheers,
Daniel
On 09.12.21 15:57, Ben Kaufman wrote:
>
> Thank you. It’s tested and working with this simple config:
>
>
>
>
>
> #!KAMAILIO
>
> loadmodule "xlog"
> loadmodule "pv"
> loadmodule "evrexec"
>
> modparam("evrexec", "exec", "name=evrexec:timer;wait=1000;workers=1;")
>
> c HOME
>
> request_route{
> forward();
> }
>
> event_route[evrexec:timer] {
> xlog("L_N", "HOME: " + HOME + "\n");
> }
>
>
>
>
>
> Regards,
>
>
> Kaufman
>
>
>
>
>
> *From:* Daniel-Constantin Mierla <miconda at gmail.com>
> *Sent:* Thursday, December 9, 2021 3:55 AM
> *To:* Kamailio (SER) - Users Mailing List
> <sr-users at lists.kamailio.org>; Ben Kaufman <bkaufman at bcmone.com>
> *Subject:* Re: [SR-Users] Unquoted values from #!defenv
>
>
>
> I pushed the code to enclose the value in between quotes. Can you test
> and see if works now?
>
> Cheers,
> Daniel
>
> On 08.12.21 19:07, Daniel-Constantin Mierla wrote:
>
> I expected the quoted mode parameter does the work -- I will check
> and push the update.
>
> Regarding support for undefined env values, maybe add something
> like #!trydefenv, because I find #!defenv useful at is it, to be
> used when the env variable must be set for proper working of
> kamailio (e.g., DB url) and fail to start if not set.
>
> Cheers,
> Daniel
>
> On 08.12.21 17:17, Ben Kaufman wrote:
>
> Daniel,
>
>
>
> Is the #!defenvs feature still a work in progress? I wrote a
> change to add #!defenvn and #!defenvns to allow for undefined
> environmental variables, and noticed that the string quoting
> on #!defenvs doesn’t do anything except log the quoting mode
> in /src/core/ pp_define_set().
>
> *Ben Kaufman*
>
> /Sr. VoIP Engineer/
>
>
> P:
>
> E: bkaufman at bcmone.com
>
> 24 hour client support: 855.639.6300 <tel:+18556396300>
>
>
>
>
> *From:* sr-users <sr-users-bounces at lists.kamailio.org>
> <mailto:sr-users-bounces at lists.kamailio.org> *On Behalf Of
> *Ben Kaufman
> *Sent:* Tuesday, December 7, 2021 9:12 AM
> *To:* Kamailio (SER) - Users Mailing List
> <sr-users at lists.kamailio.org> <mailto:sr-users at lists.kamailio.org>
> *Subject:* Re: [SR-Users] Unquoted values from #!defenv
>
>
>
> Thank you. I’ve been using -A to set values thus far as CMD
> arguments to the container’s ENTRYPOINT. If submitting a pull
> request, would it be preferrable to allow #!defenv/#!defenvs
> to accept undefined values, or to add new keywords like
> #!ifdefenv/#!ifdefenvs ?
>
>
>
> *Ben Kaufman*
>
>
>
>
> *From:* Daniel-Constantin Mierla <miconda at gmail.com>
> *Sent:* Tuesday, December 7, 2021 2:22 AM
> *To:* Ben Kaufman <bkaufman at bcmone.com>; Kamailio (SER) -
> Users Mailing List <sr-users at lists.kamailio.org>
> *Subject:* Re: [SR-Users] Unquoted values from #!defenv
>
>
>
> The current behaviour targets the use of existing values from
> the environment variables. If you need other kind of features,
> you can propose pull requests. Or you can eventually have a
> start script that sets defines with -A cli parameter based on
> env variables.
>
> Cheers,
> Daniel
>
> On 06.12.21 21:56, Ben Kaufman wrote:
>
> Thank you :)
>
>
>
> A follow up question would be on the usability of the
> #!defenv (and probably #!defenvs) usability with #!ifdef.
> In the scenario below, if the environmental variable
> WITH_DEBUGGER is not defined, then Kamailio will fail to
> start, thus the #!ifdef is somewhat limited. It makes
> sense for scenarios where someone might toggle the setting
> editing the config file, but it would be very convenient
> to toggle the environmental variable instead, particularly
> in containerized environments. Any thoughts on how best
> to control this?
>
>
>
> #!defenv WITH_DEBUGGER
>
>
>
> #!ifdef WITH_DEBUGGER
>
> loadmodule "debugger"
>
> . . .
>
> #!endif
>
>
>
>
>
>
>
>
>
> *Ben Kaufman*
>
>
>
>
> *From:* Daniel-Constantin Mierla <miconda at gmail.com>
> <mailto:miconda at gmail.com>
> *Sent:* Monday, December 6, 2021 3:55 AM
> *To:* Kamailio (SER) - Users Mailing List
> <sr-users at lists.kamailio.org>
> <mailto:sr-users at lists.kamailio.org>; Ben Kaufman
> <bkaufman at nexvortex.com> <mailto:bkaufman at nexvortex.com>
> *Subject:* Re: [SR-Users] Unquoted values from #!defenv
>
>
>
> Hello,
>
> #!substdef does not set the value inside quoted string, it
> replaces inside a string value, so it does not put quotes
> around replacement part. So it does it it is written in
> the docs. There is #!substdefs witch can create a define
> with quoted value.
>
> Note that defines are standalone-token replacement, you
> can define an ID to a number, to a keyword (e.g., src_ip),
> to a quoted string or even a multi-line script snippet, like:
>
> #!define IDLOOP $var(i) = 0; \
> while($var(i)<5) { \
> xlog("++++ $var(i)\n"); \
> $var(i) = $var(i) + 1; \
> }
>
> See the core cookbook for more details.
>
> Anyhow, as using env variable values as quoted string is
> useful and setting them with quotes might look odd, I
> added #!defenvs:
>
> *
> https://www.kamailio.org/wiki/cookbooks/devel/core#defenvs
> <https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.kamailio.org%2Fwiki%2Fcookbooks%2Fdevel%2Fcore%23defenvs&data=04%7C01%7Cbkaufman%40bcmone.com%7C7f2519a79bfe44fe14b108d9baf9fcfc%7Cafc1818e7b6848568913201b9396c4fc%7C1%7C0%7C637746405128674863%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=9d81Vu%2FH5XERc4ct6lzKWQYFfAqTM4gocdKD85cXclw%3D&reserved=0>
>
> Cheers,
> Daniel
>
> On 30.11.21 22:40, Ben Kaufman wrote:
>
> Hello all,
>
>
>
> Looking for some clarification regarding quoting and
> !#defenv . I understand that the example below fails
> because the environmental variable HOME is not quoted,
> thus when used in the xlog() call it fails. How is it
> possible to evaluate and/or use the value of the
> environmental variable if defined as a preprocessor
> variable? Looking at the documentation the reason for
> this directive is “It is a simplified alternative of
> using *#!substdef* with *$env(NAME)* in the
> replacement part.” But #!substdef would allow setting
> the value inside of a quoted string, so does it really
> meet that requirement?
>
>
>
> I’m aware that I could use $env(HOME) rather than a
> preprocessor directive of HOME. I’m just trying to
> understand the usage of the #!defenv feature.
>
>
>
>
>
> #!KAMAILIO
>
> ## Tested in 5.5.2
>
> loadmodule "xlog"
>
> loadmodule "pv"
>
> loadmodule "evrexec"
>
>
>
> modparam("evrexec", "exec",
> "name=evrexec:timer;wait=1000;workers=1;")
>
>
>
> #!defenv HOME
>
>
>
> request_route{
>
> forward();
>
> }
>
>
>
> event_route[evrexec:timer] {
>
> xlog("L_N", "HOME: " + HOME + "\n");
>
> }
>
>
>
>
>
> *Ben Kaufman*
>
>
>
>
>
>
>
>
>
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Kamailio Advanced Training - Online
Feb 21-24, 2022 (America Timezone)
* https://www.asipto.com/sw/kamailio-advanced-training-online/
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