This demo uses Dovetail and TIBCO graph DB to demonstrate a digital-twin type of application for global logicstics services that manages the pickup and delivery packages by multiple carriers. The blockchain tracks key milestone events generated when environment-sensitive goods are picked up, delivered, and/or transferred between carriers, as well as IoT events that shows violation of required shipping conditions.

• TIBCO graph Database 3.0
• Hyperledger Fabric 2.2.1
• Golang 1.14 or above

• Download and install TIBCO graph database, and set $TGDB_HOME to the installation directory, e.g., $HOME/tibco/tgdb/3.0.
• Download the following 3 open-dovetail repositories in an empty folder, e.g. open-dovetail: fabric-chaincode, fabric-client, and demo.
• Initialize the Dovetail development environment by executing the script fabric-chaincode/scripts/setup.sh.

For example, assuming that you have downloaded Go from here, and extracted the package in /usr/local/go, you may setup the following environment varialbes for Go:

export GOROOT=/usr/local/go
mkdir $HOME/go
export GOPATH=$HOME/go
export PATH=$GOROOT/bin:$GOPATH/bin:$PATH

You can then use the following commands to install everything in $HOME directory:

unzip TIB_tgdb_3.0.0_macosx_x86_64.zip -d $HOME
export TGDB_HOME=$HOME/tgdb/3.0
mkdir $HOME/open-dovetail
cd $HOME/open-dovetail
git clone https://github.com/open-dovetail/fabric-chaincode.git
git clone https://github.com/open-dovetail/fabric-client.git
git clone https://github.com/open-dovetail/demo.git
cd fabric-chaincode/scripts
./setup.sh

The setup.sh will install Hyperledger Fabric binary and samples in $HOME/open-dovetail/hyperledger/fabric-samples.

If this is a new installation of TGDB, run the following command to test the installation and accept the license:

cd $TGDB_HOME/bin
./tgdb -i -f -c ./tgdb.conf

On some Linux environment, e.g., Ubuntu, if you see the following error when initializing TGDB:

Could not find a viable libffi. Need to have libffi installed to run the TIBCO graph database server!

you can find the libffi location and then create a symbolic link as follows:

# find the location of libffi.so.x
ldconfig -p | grep libffi

# create symbolic link to the result, e.g., /usr/lib/x86_64-linux-gnu/libffi.so.6
ln -s /usr/lib/x86_64-linux-gnu/libffi.so.6 $TGDB_HOME/lib/libffi.so.5

Start all backend components by executing the script demo/az/start-all.sh, and test components as described in README.md.

The README.md also describes how to create and setup a Linux VM in Azure, and start all the components in the VM. The same startup script start-all.sh works both locally on a laptop, or on an Azure Linux VM.

When the test is complete, you can use the following script to shutdown and cleanup all the demo processes:

cd $HOME/open-dovetail/demo/az
./cleanup-all.sh