block-listener

What is block-listener

block-listener.go will connect to a peer and receive block and chaincode events (if there are chaincode events being set). Currently, this example only runs with TLS disabled.

To Run

1. go build

2. ./block-listener -events-address=< event address > -events-from-chaincode=< chaincode ID > -events-mspdir=< msp directory > -events-mspid=< msp id >

Please be noted that if no msp info provided, it uses default MSP under fabric/sampleconfig.

Example with e2e

Please make sure you have finished running the e2e_cli example. Before doing that, don't forget to make sure that TLS has been disabled by setting the CORE_PEER_TLS_ENABLED=false in docker-compose-cli.yaml, base/docker-compose-base.yaml and base/peer-base.yaml.

Suppose you just finished the All-in-one:

./network_setup.sh up

Attach event client to peer peer0.org1.example.com (suppose you are running block-listener in the host environment):

./block-listener -events-address=127.0.0.1:7053 -events-mspdir=<peer0.org1.example.com's msp directory > -events-mspid=Org1MSP

Event client should output "Event Address: 127.0.0.1:7053" and wait for events.

Exec into the cli container:

docker exec -it cli bash

Setup the environment variables for peer0.org1.example.com

CORE_PEER_MSPCONFIGPATH=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org1.example.com/users/Admin@org1.example.com/msp
CORE_PEER_ADDRESS=peer0.org1.example.com:7051
CORE_PEER_LOCALMSPID="Org1MSP"

Create an invoke transaction:

peer chaincode invoke -o orderer.example.com:7050 -C $CHANNEL_NAME -n mycc -c '{"Args":["invoke","a","b","10"]}'

Now you should see the block content received in events client.

This work is licensed under a Creative Commons Attribution 4.0 International License. s