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Oliveira</B> + <A HREF="mailto:extend%40lists.ninenines.eu?Subject=Re%3A%20%5B99s-extend%5D%20Mandatory%20init/3%20and%20optional%20handle/2%20and%0A%09terminate/3&In-Reply-To=%3CCA%2BdV7cRvLwTj1L%3DmyMrjEUEju8gr0gATSXO%2BZ%2BOktsadh4y37w%40mail.gmail.com%3E" + TITLE="[99s-extend] Mandatory init/3 and optional handle/2 and terminate/3">paulo.ferraz.oliveira at gmail.com + </A><BR> + <I>Thu Jun 5 01:49:01 CEST 2014</I> + <P><UL> + <LI>Previous message: <A HREF="000392.html">[99s-extend] Mandatory init/3 and optional handle/2 and terminate/3 +</A></li> + <LI>Next message: <A HREF="000401.html">[99s-extend] [ANN] Cowboy and Ranch 0.10 +</A></li> + <LI> <B>Messages sorted by:</B> + <a href="date.html#395">[ date ]</a> + <a href="thread.html#395">[ thread ]</a> + <a href="subject.html#395">[ subject ]</a> + <a href="author.html#395">[ author ]</a> + </LI> + </UL> + <HR> +<!--beginarticle--> +<PRE>Got it, thanks. + +This here <<A HREF="http://ninenines.eu/docs/en/cowboy/HEAD/manual/cowboy_rest/">http://ninenines.eu/docs/en/cowboy/HEAD/manual/cowboy_rest/</A>> had +the fine print that I hadn't read apparently: "This module cannot be +described as a behaviour due to most of the callbacks it defines being +optional. It has the same semantics as a behaviour otherwise." + +- Paulo F. Oliveira + + +On 4 June 2014 22:46, Loïc Hoguin <<A HREF="https://lists.ninenines.eu/listinfo/extend">essen at ninenines.eu</A>> wrote: + +><i> You shouldn't say -behavior(cowboy_http_handler) if you don't actually +</I>><i> implement it. +</I>><i> +</I>><i> On 06/04/2014 11:37 PM, Paulo F. Oliveira wrote: +</I>><i> +</I>>><i> Hello. +</I>>><i> +</I>>><i> You wrote here +</I>>><i> <<A HREF="http://ninenines.eu/docs/en/cowboy/HEAD/manual/cowboy_rest/">http://ninenines.eu/docs/en/cowboy/HEAD/manual/cowboy_rest/</A>> that "The +</I>>><i> +</I>>><i> only mandatory callback is init/3, needed to perform the protocol +</I>>><i> upgrade." +</I>>><i> +</I>>><i> In my code I have only this function for the protocol upgrade: +</I>>><i> +</I>>><i> init({_TransportName, _ProtocolName}, _Req, []) -> +</I>>><i> {upgrade, protocol, cowboy_rest}. +</I>>><i> +</I>>><i> On the other hand, when compiling, I get the following warnings: +</I>>><i> +</I>>><i> src/handler_transactions.erl:3: Warning: undefined callback function +</I>>><i> handle/2 (behaviour 'cowboy_http_handler') +</I>>><i> src/handler_transactions.erl:3: Warning: undefined callback function +</I>>><i> terminate/3 (behaviour 'cowboy_http_handler') +</I>>><i> +</I>>><i> Is this the expected behavior? I know I _can_ ignore the warnings, but +</I>>><i> not if I want to use Erlang compiler option warnings_as_errors, for +</I>>><i> example. +</I>>><i> +</I>>><i> Many thanks. +</I>>><i> +</I>>><i> - Paulo F. Oliveira +</I>>><i> +</I>>><i> +</I>>><i> _______________________________________________ +</I>>><i> Extend mailing list +</I>>><i> <A HREF="https://lists.ninenines.eu/listinfo/extend">Extend at lists.ninenines.eu</A> +</I>>><i> <A HREF="https://lists.ninenines.eu/listinfo/extend">https://lists.ninenines.eu/listinfo/extend</A> +</I>>><i> +</I>>><i> +</I>><i> -- +</I>><i> Loïc Hoguin +</I>><i> <A HREF="http://ninenines.eu">http://ninenines.eu</A> +</I>><i> +</I>-------------- next part -------------- +An HTML attachment was scrubbed... +URL: <<A HREF="http://lists.ninenines.eu/archives/extend/attachments/20140605/46eee3c0/attachment.html">http://lists.ninenines.eu/archives/extend/attachments/20140605/46eee3c0/attachment.html</A>> +</PRE> + + + + + + + +<!--endarticle--> + <HR> + <P><UL> + <!--threads--> + <LI>Previous message: <A HREF="000392.html">[99s-extend] Mandatory init/3 and optional handle/2 and terminate/3 +</A></li> + <LI>Next message: <A HREF="000401.html">[99s-extend] [ANN] Cowboy and Ranch 0.10 +</A></li> + <LI> <B>Messages sorted by:</B> + <a href="date.html#395">[ date ]</a> + <a href="thread.html#395">[ thread ]</a> + <a href="subject.html#395">[ subject ]</a> + <a href="author.html#395">[ author ]</a> + </LI> + </UL> + +<hr> +<a href="https://lists.ninenines.eu/listinfo/extend">More information about the Extend +mailing list</a><br> +</body></html> |