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IBM MQ Go samples

The Go samples are based on https://github.com/ibm-messaging/mq-golang/tree/master/samples and have been tested with Golang versions 1.11.2 and 1.11.5.

Install/unzip IBM MQ client

Mac

IBM MQ MacOS toolkit for developers v 9.1.1.0 download

Add <unzip location>/IBM-MQ-Toolkit-Mac-x64-9.1.1.0/bin and <unzip location>/IBM-MQ-Toolkit-Mac-x64-9.1.1.0/samp/bin, to the PATH by editing /etc/paths

export DYLD_LIBRARY_PATH=<unzip location>/IBM-MQ-Toolkit-Mac-x64-9.1.1.0/lib64

Windows

Windows client v 9.1.1.0 download

Linux

Linux Ubuntu client v 9.1.1.0 download

Setting $GOPATH to your project src folder

Go needs to know where to look for the src folder in your current project directory

You'll need to do this in each new terminal you open

We've provided a very simple script to set the $GOPATH to present working directory.

From the Go folder with the pkg src folders, run the setgopath script:

. ./setgopath.sh

Install mq-golang pre reqs

These samples assume that mq-golang will be dowloaded into the src folder

cd into the src folder and then run;

git clone https://github.com/ibm-messaging/mq-golang.git

then compile the mq-golang library by running;

go install ./mq-golang/ibmmq

This will install the Go thin layer for MQ Client in the src folder

To run the samples

From the Go folder with the pkg src folders, run the setgopath script:

. ./setgopath.sh

cd to src folder;

Mac users - important - create symbolic link from MQ toolkit unzip location to /opt/mqm

The install script for the mq-golang library will look for what it needs in the lib64 folder of the Mac Toolkit; but it will look for this in the /opt/mqm/lib64 folder.

We need to create a symbolic link:

sudo ln -s <unzip location>/IBM-MQ-Toolkit-Mac-x64-9.1.1.0 /opt/mqm

You can then compile the samples.

Put / Get

Compile first

go build basicput.go

and run ./basicput

In a separate terminal

From the Go folder with the pkg src folders, run the setgopath script:

. ./setgopath.sh

cd to src folder;

Compile first

go build basicget.go

and run ./basicget

Publish / Subscribe

Open two terminals and in each run the

. ./setgopath.sh

then

cd to src folder;

In the first terminal; You have to run the subscriber sample first so it creates a subscription and waits for a publication.

Compile first

go build basicsub.go

and run ./basicsub

If you run the publisher before a subscription has been created on the topic, subscribers joining after the event will not receive the publication (there are persistent options but we've not set these samples for that)

In the second terminal; Run the publisher sample

Compile first

go build basicpub.go

and run ./basicpub

Request / Response

Open two terminals and in each run the

. ./setgopath.sh

then

cd to src folder;

In one of the terminals;

Compile first

go build basicrequest.go

and run ./basicrequest

The request sample will put a message and wait for a response until it either gets a response or you ctrl+c interrupt it.

In the second terminal;

Run the response sample

Compile first

go build basicresponse.go

and run ./basicresponse

The response sample will get a message from the queue, process it and put the response on the reply to queue and keep looking for more messages to respond to till you ctrl+c interrupt it.