java.md

Build Fabric with support for chaincodes in Java

For Fabric version < 1.3.

This excercise has been tested with the following versions:

docker --version && java -version && go version

• Docker version 17.12.1-ce, build 7390fc6
• java version "1.8.0_181"
• go version go1.10.1 linux/amd64

Clean up. Delete all docker containers and images.

docker rm -f `(docker ps -aq)`
docker rmi -f `(docker images -aq)`

Create directories, environment and clone the latest source of Hyperledger Fabric from master.

mkdir -p ~/go
export GOPATH=~/go
mkdir -p $GOPATH/src/github.com/hyperledger
cd $GOPATH/src/github.com/hyperledger
git clone https://github.com/hyperledger/fabric
cd fabric

Build docker images with java enabled via EXPERIMENTAL flag.

export EXPERIMENTAL=true
make docker

Clone the latest source of java chaincode support.

cd $GOPATH/src/github.com/hyperledger
git clone https://github.com/hyperledger/fabric-chaincode-java 
cd fabric-chaincode-java

Build docker image for java chaincode fabric-javaenv and java shim for chaincode development.

./gradlew buildImage
./gradlew publishToMavenLocal

Install and instantiate java chaincode fabric-chaincode-example on channel common. Note the path to the source code is inside cli docker container and is mapped to the local ./chaincode/java/fabric-chaincode-example-gradle

./chaincode-install.sh fabric-chaincode-example /opt/chaincode/java/fabric-chaincode-example-gradle java
./chaincode-instantiate.sh common fabric-chaincode-example '["init","a","10","b","0"]'