使用 chaincode
下面演示 example02 chaincode，完成两方（如 a 和 b）之间进行价值的转移。
部署 chaincode
集群启动后，进入一个 VP 节点。以 pbft 模式为例，节点名称为 pbft_vp0_1。
$ docker exec -it pbft_vp0_1 bash
部署 chaincode example02。
$ peer chaincode deploy -p github.com/hyperledger/fabric/examples/chaincode/go/chaincode_example02 -c '{"Function":"init", "Args": ["a","100", "b", "200"]}'
03:08:44.740 [chaincodeCmd] chaincodeDeploy -> INFO 001 Deploy result: type:GOLANG chaincodeID:<path:"github.com/hyperledger/fabric/examples/chaincode/go/chaincode_example02" name:"ee5b24a1f17c356dd5f6e37307922e39ddba12e5d2e203ed93401d7d05eb0dd194fb9070549c5dc31eb63f4e654dbd5a1d86cbb30c48e3ab1812590cd0f78539" > ctorMsg:<args:"init" args:"a" args:"100" args:"b" args:"200" >
Deploy chaincode: ee5b24a1f17c356dd5f6e37307922e39ddba12e5d2e203ed93401d7d05eb0dd194fb9070549c5dc31eb63f4e654dbd5a1d86cbb30c48e3ab1812590cd0f78539
03:08:44.740 [main] main -> INFO 002 Exiting.....
返回 chaincode id 为 ee5b24a1f17c356dd5f6e37307922e39ddba12e5d2e203ed93401d7d05eb0dd194fb9070549c5dc31eb63f4e654dbd5a1d86cbb30c48e3ab1812590cd0f78539，后面将用这个 id 来标识这次交易。为了方便，把它记录到环境变量 CC_ID 中。
$ CC_ID="ee5b24a1f17c356dd5f6e37307922e39ddba12e5d2e203ed93401d7d05eb0dd194fb9070549c5dc31eb63f4e654dbd5a1d86cbb30c48e3ab1812590cd0f78539"
部署成功后，系统中会自动生成几个 chaincode 容器，例如
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
e86c26bad76f dev-vp1-ee5b24a1f17c356dd5f6e37307922e39ddba12e5d2e203ed93401d7d05eb0dd194fb9070549c5dc31eb63f4e654dbd5a1d86cbb30c48e3ab1812590cd0f78539 "/opt/gopath/bin/ee5b" 2 minutes ago Up 2 minutes dev-vp1-ee5b24a1f17c356dd5f6e37307922e39ddba12e5d2e203ed93401d7d05eb0dd194fb9070549c5dc31eb63f4e654dbd5a1d86cbb30c48e3ab1812590cd0f78539
597ebaf929a0 dev-vp2-ee5b24a1f17c356dd5f6e37307922e39ddba12e5d2e203ed93401d7d05eb0dd194fb9070549c5dc31eb63f4e654dbd5a1d86cbb30c48e3ab1812590cd0f78539 "/opt/gopath/bin/ee5b" 2 minutes ago Up 2 minutes dev-vp2-ee5b24a1f17c356dd5f6e37307922e39ddba12e5d2e203ed93401d7d05eb0dd194fb9070549c5dc31eb63f4e654dbd5a1d86cbb30c48e3ab1812590cd0f78539
8748a3b47312 dev-vp3-ee5b24a1f17c356dd5f6e37307922e39ddba12e5d2e203ed93401d7d05eb0dd194fb9070549c5dc31eb63f4e654dbd5a1d86cbb30c48e3ab1812590cd0f78539 "/opt/gopath/bin/ee5b" 2 minutes ago Up 2 minutes dev-vp3-ee5b24a1f17c356dd5f6e37307922e39ddba12e5d2e203ed93401d7d05eb0dd194fb9070549c5dc31eb63f4e654dbd5a1d86cbb30c48e3ab1812590cd0f78539
cf6e762f6a2e dev-vp0-ee5b24a1f17c356dd5f6e37307922e39ddba12e5d2e203ed93401d7d05eb0dd194fb9070549c5dc31eb63f4e654dbd5a1d86cbb30c48e3ab1812590cd0f78539 "/opt/gopath/bin/ee5b" 2 minutes ago Up 2 minutes dev-vp0-ee5b24a1f17c356dd5f6e37307922e39ddba12e5d2e203ed93401d7d05eb0dd194fb9070549c5dc31eb63f4e654dbd5a1d86cbb30c48e3ab1812590cd0f78539
查询 chaincode
查询 a 手头的价值，为初始值 100。
$ peer chaincode query -n ${CC_ID} -c '{"Function": "query", "Args": ["a"]}'
03:22:31.420 [chaincodeCmd] chaincodeInvokeOrQuery -> INFO 001 Successfully queried transaction: chaincodeSpec:<type:GOLANG chaincodeID:<name:"ee5b24a1f17c356dd5f6e37307922e39ddba12e5d2e203ed93401d7d05eb0dd194fb9070549c5dc31eb63f4e654dbd5a1d86cbb30c48e3ab1812590cd0f78539" > ctorMsg:<args:"query" args:"a" > >
Query Result: 100
03:22:31.420 [main] main -> INFO 002 Exiting.....
调用 chaincode
a 向 b 转账 10 元。
$ peer chaincode invoke -n ${CC_ID} -c '{"Function": "invoke", "Args": ["a", "b", "10"]}'
03:22:57.345 [chaincodeCmd] chaincodeInvokeOrQuery -> INFO 001 Successfully invoked transaction: chaincodeSpec:<type:GOLANG chaincodeID:<name:"ee5b24a1f17c356dd5f6e37307922e39ddba12e5d2e203ed93401d7d05eb0dd194fb9070549c5dc31eb63f4e654dbd5a1d86cbb30c48e3ab1812590cd0f78539" > ctorMsg:<args:"invoke" args:"a" args:"b" args:"10" > > (fc298ffb-c763-4ed0-9da2-072de2ab20b1)
03:22:57.345 [main] main -> INFO 002 Exiting.....
查询 a 手头的价值，为新的值 90。
```sh
$ peer chaincode query -n ${CC_ID} -c '{"Function": "query", "Args": ["a"]}'
03:23:33.045 [chaincodeCmd] chaincodeInvokeOrQuery -> INFO 001 Successfully queried transaction: chaincodeSpec: