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| # What is block-listener | ||
| block-listener.go will connect to a peer and receive blocks events, transaction rejection events and chaincode events (if a chaincode emits events). | ||
| ## WIP : TODO for v1.0 using FAB-3037 | ||
| Need to describe this tool, and all about events | ||
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| # To Run | ||
| ```sh | ||
| 1. go build | ||
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| 2. ./block-listener -events-address=< event address > -listen-to-rejections=< true | false > -events-from-chaincode=< chaincode ID > | ||
| ``` | ||
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| # Example with PBFT | ||
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| ## Run 4 docker peers with PBFT | ||
| ```sh | ||
| docker run --rm -it -e CORE_VM_ENDPOINT=http://172.17.0.1:2375 -e CORE_PEER_ID=vp0 -e CORE_PEER_ADDRESSAUTODETECT=true -e CORE_PEER_VALIDATOR_CONSENSUS_PLUGIN=pbft hyperledger/fabric-peer peer node start | ||
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| docker run --rm -it -e CORE_VM_ENDPOINT=http://172.17.0.1:2375 -e CORE_PEER_ID=vp1 -e CORE_PEER_ADDRESSAUTODETECT=true -e CORE_PEER_DISCOVERY_ROOTNODE=172.17.0.2:7051 -e CORE_PEER_VALIDATOR_CONSENSUS_PLUGIN=pbft hyperledger/fabric-peer peer node start | ||
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| docker run --rm -it -e CORE_VM_ENDPOINT=http://172.17.0.1:2375 -e CORE_PEER_ID=vp2 -e CORE_PEER_ADDRESSAUTODETECT=true -e CORE_PEER_DISCOVERY_ROOTNODE=172.17.0.2:7051 -e CORE_PEER_VALIDATOR_CONSENSUS_PLUGIN=pbft hyperledger/fabric-peer peer node start | ||
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| docker run --rm -it -e CORE_VM_ENDPOINT=http://172.17.0.1:2375 -e CORE_PEER_ID=vp3 -e CORE_PEER_ADDRESSAUTODETECT=true -e CORE_PEER_DISCOVERY_ROOTNODE=172.17.0.2:7051 -e CORE_PEER_VALIDATOR_CONSENSUS_PLUGIN=pbft hyperledger/fabric-peer peer node start | ||
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| ## Attach event client to a Peer | ||
| ```sh | ||
| ./block-listener -events-address=172.17.0.2:7053 -listen-to-rejections=true | ||
| ``` | ||
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| Event client should output "Event Address: 172.17.0.2:7053" and wait for events. | ||
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| ## Create a deploy transaction | ||
| Submit a transaction to deploy chaincode_example02. | ||
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| ```sh | ||
| CORE_PEER_ADDRESS=172.17.0.2:7051 peer chaincode deploy -p github.com/hyperledger/fabric/examples/chaincode/go/chaincode_example02 -c '{"Function":"init", "Args": ["a","100", "b", "200"]}' | ||
| ``` | ||
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| Notice success transaction in the events client. | ||
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| ## Create an invoke transaction - good | ||
| Send a valid invoke transaction to chaincode_example02. | ||
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| ```sh | ||
| CORE_PEER_ADDRESS=172.17.0.2:7051 peer chaincode invoke -n 1edd7021ab71b766f4928a9ef91182c018dffb86fef7a4b5a5516ac590a87957e21a62d939df817f5105f524abddcddfc7b1a60d780f02d8235bd7af9db81b66 -c '{"Function":"invoke", "Args": ["a","b","10"]}' | ||
| ``` | ||
| Notice success transaction in events client. | ||
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| ## Create an invoke transaction - bad | ||
| Send an invoke transaction with invalid parameters to chaincode_example02. | ||
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| ```sh | ||
| CORE_PEER_ADDRESS=172.17.0.2:7051 peer chaincode invoke -n 1edd7021ab71b766f4928a9ef91182c018dffb86fef7a4b5a5516ac590a87957e21a62d939df817f5105f524abddcddfc7b1a60d780f02d8235bd7af9db81b66 -c '{"Function":"invoke", "Args": ["a","b"]}' | ||
| ``` | ||
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| Notice error transaction in events client. | ||
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| # Tesing chaincode events | ||
| Chaincode github.com/hyperledger/fabric/examples/chaincode/go/eventsender can be used to test event sender. | ||
| ## Deploy eventsender chaincode | ||
| Stop the event listener and restart it as follows | ||
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| ``` | ||
| CORE_PEER_ADDRESS=172.17.0.2:7051 ./peer chaincode deploy -p github.com/hyperledger/fabric/examples/chaincode/go/eventsender -c '{"Function":"init", "Args":[]}' | ||
| ``` | ||
| ``` | ||
| Note the chaincode ID of the eventsender chaincode. This will be used in the commands below. | ||
| ``` | ||
| ## Restart event listener | ||
| Stop the event listener if running and restart it with `-events-from-chaincode` option | ||
| ```sh | ||
| ./block-listener -events-address=172.17.0.2:7053 -listen-to-rejections=true -events-from-chaincode=< event sender chaincode ID> | ||
| ``` | ||
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| ##Send an invoke request to event sender | ||
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| ```sh | ||
| CORE_PEER_ADDRESS=172.17.0.2:7051 ./peer chaincode invoke -n < eventsender chaincode ID > -c '{"Function":"greet", "Args":["hello","world"]}' | ||
| ``` | ||
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| Note the output from the event listener terminal showing a chaincode event from the event sender chaincode in addition to the block event generated by the transaction. |