Auto-Start of Required Chaincode Container

Q

Why a chaincode container is automatically started?

✍: FYIcenter.com

A

A chaincode container will be automatically started, if a chaincode is invoked and the chaincode container's peer is a required peer for the chaincode.

Let's continue with the previous tutorial to see this behavior.

6. Stop the chaincode container for peer0.org2, which is a required peer for the chaincode.

$ docker stop 4e1b1b131dc5

$ docker ps | grep chaincode
CONTAINER ID  STATUS       NAMES
9b93813390d3  Up 14 hours  dev-peer0.org1.example.com-mycc-1.0

7. Submit another transaction on peer0.org1:

$ docker exec -it cli bash

bash-4.4# source peer0-org1.sh

bash-4.4# peer chaincode invoke -o orderer.example.com:7050 --tls true \
   --cafile /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto\
   /ordererOrganizations/example.com/orderers/orderer.example.com/msp\
   /tlscacerts/tlsca.example.com-cert.pem -C mychannel -n mycc \
   --peerAddresses peer0.org1.example.com:9051 --tlsRootCertFiles \
   /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations\
   /org1.example.com/peers/peer0.org1.example.com/tls/ca.crt \
   --peerAddresses peer0.org2.example.com:9051 --tlsRootCertFiles \
   /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations\
   /org2.example.com/peers/peer0.org2.example.com/tls/ca.crt \
   -c '{"Args":["invoke","a","b","10"]}'

bash-4.4# peer chaincode query -C mychannel -n mycc -c '{"Args":["query","a"]}'
70

8. Verify that the status chaincode container for peer0.org2 is automatically started:

bash-4.4# exit

$ docker ps | grep chaincode
CONTAINER ID  STATUS       NAMES
9b93813390d3  Up 14 hours  dev-peer0.org1.example.com-mycc-1.0
4e1b1b131dc5  Up 1 minute  dev-peer0.org2.example.com-mycc-1.0

The logical chaincode instance "mycc" on the channel is working, because the required peer peer0.org2 forced the chaincode container, dev-peer0.org2.example.com-mycc-1.0, to start to run.

 

Blockchain Data Files on Peer Container

Impact of Stopping Chaincode Container

Hyperledger Fabric Docker Containers

⇑⇑ Hyperledger Tutorials

2020-07-03, 379👍, 2💬