This is a C-language AMQP client library for use with AMQP servers speaking protocol versions 0-9-1.
Announcements regarding the library are periodically made on the RabbitMQ mailing list and on the RabbitMQ blog.
In addition to the source code for this library, you will require a
copy of rabbitmq-codegen
. Here is a short sh
script for retrieving
the necessary pieces:
hg clone http://hg.rabbitmq.com/rabbitmq-codegen/
hg clone http://hg.rabbitmq.com/rabbitmq-c/
You will also need a recent python with the simplejson module installed, and the GNU autotools (autoconf, automake, libtool etc) or as an alternative CMake
Once you have all the prerequisites, change to the rabbitmq-c
directory and run
autoreconf -i
to run the GNU autotools and generate the configure script, followed by
./configure
make
to build the librabbitmq
library and the example programs.
You will need CMake: http://cmake.org/
You will need a working python install in your path.
If you would like the build system to fetch the rabbitmq-codegen automatically you will need to have a working git install in your path. Otherwise you will need to checkout the rabbitmq-codegen as stated above.
Create a binary directory in a sibling directory from the directory you cloned the rabbitmq-c repository
mkdir bin-rabbitmq-c
Run CMake in the binary directory
cmake /path/to/source/directory
Build it:
- On linux:
make
- On win32:
nmake
ormsbuild
, or open it in visual studio and build from there
Things you can pass to cmake to change the build:
-DRABBITMQ_CODEGEN_DIR=/path/to/rabbitmq-codegen/checkout
- if you have your codegen directory in a different place [Default is sibiling directory to source]-DFETCH_CODEGEN_FROM_GIT=ON
- if you want cmake to fetch the rabbitmq-codegen from https://github.com/rabbitmq/rabbitmq-codegen at build time. If this option is selected-DRABBITMQ_CODEGEN_DIR
will be ignored [Default is off]-DCODEGEN_GIT_TAG=rabbitmq_v2_5_1
- specifies the tag to check out if using the-DFETCH_CODEGEN_FROM_GIT
option above. [Default israbbitmq_v2_5_1
]-DBUILD_TOOLS=OFF
build the programs in the tools directory [Default is ON if the POPT library can be found]
Other interesting flags to pass to CMake (see cmake docs for more info)
-DCMAKE_BUILD_TYPE
- specify the type of build (Debug or Release)-DCMAKE_INSTALL_PREFIX
- specify where the install target puts files
Arrange for a RabbitMQ or other AMQP server to be running on
localhost
at TCP port number 5672.
In one terminal, run
./examples/amqp_listen localhost 5672 amq.direct test
In another terminal,
./examples/amqp_sendstring localhost 5672 amq.direct test "hello world"
You should see output similar to the following in the listener's terminal window:
Result 1
Frame type 1, channel 1
Method AMQP_BASIC_DELIVER_METHOD
Delivery 1, exchange amq.direct routingkey test
Content-type: text/plain
----
00000000: 68 65 6C 6C 6F 20 77 6F : 72 6C 64 hello world
0000000B:
Please see the examples
directory for short examples of the use of
the librabbitmq
library.
You cannot share a socket, an amqp_connection_state_t
, or a channel
between threads using librabbitmq
. The librabbitmq
library is
built with event-driven, single-threaded applications in mind, and
does not yet cater to any of the requirements of pthread
ed
applications.
Your applications instead should open an AMQP connection (and an associated socket, of course) per thread. If your program needs to access an AMQP connection or any of its channels from more than one thread, it is entirely responsible for designing and implementing an appropriate locking scheme. It will generally be much simpler to have a connection exclusive to each thread that needs AMQP service.