[rabbitmq-discuss] Help defining appropriate queue model

Fabio Margarido fabiomargarido at gmail.com
Thu Mar 3 11:20:48 GMT 2011

On Wed, Mar 2, 2011 at 22:02, Michael Bridgen <mikeb at rabbitmq.com> wrote:
> The rabbitmq-lvc-plugin gives you an exchange type that acts like a direct
> exchange; but when you bind a queue, the queue gets the most recent message
> for the binding key given before being routed new messages.
> http://github.com/squaremo/rabbitmq-lvc-plugin

This sounds really interesting. Is this the plugin Alister and Alexis
were talking about? Is it actively developed (or considered
feature-complete) and considered stable?
I've tried to get it up and running to give it a try but I'm stuck.
Following the build instructions in the github page led to the
following error when I ran (cd ../rabbitmq-erlang-client ; make clean
&& make):

escript ../rabbitmq-server/generate_deps deps.mk ebin
escript: exception error: no function clause matching
  in function  escript:run/2
  in call from escript:start/1
  in call from init:start_it/1
  in call from init:start_em/1
sed -e 's:%%VSN%%:0.0.0:g' < rabbit_common.app.in > rabbit_common.app
mkdir -p dist
rm -f dist/rabbit_common.ez
make -C ../rabbitmq-server
make: *** [dist/rabbit_common.ez] Error 2

If I skip these steps:

(cd rabbitmq-server ; hg up -C bug22169 ; make -j)
(cd ../rabbitmq-erlang-client ; make clean && make)

This is the error I get when trying to compile the plugin:

ERL_LIBS=build/deps:deps erlc -I include -o ebin -Wall +debug_info -pa
ebin src/rabbit_exchange_type_lvc.erl
src/rabbit_exchange_type_lvc.erl:21: field routing_key undefined in
record basic_message
src/rabbit_exchange_type_lvc.erl:27: variable 'RK' is unbound
make: *** [ebin/rabbit_exchange_type_lvc.beam] Error 1

Any thoughts?

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