• 使用 chaincode
    • 部署 chaincode
    • 查询 chaincode
    • 调用 chaincode

    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。

    1. $ docker exec -it pbft_vp0_1 bash

    部署 chaincode example02。

    1. $ peer chaincode deploy -p github.com/hyperledger/fabric/examples/chaincode/go/chaincode_example02 -c '{"Function":"init", "Args": ["a","100", "b", "200"]}'
    2. 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" >
    3. Deploy chaincode: ee5b24a1f17c356dd5f6e37307922e39ddba12e5d2e203ed93401d7d05eb0dd194fb9070549c5dc31eb63f4e654dbd5a1d86cbb30c48e3ab1812590cd0f78539
    4. 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。

    1. $ CC_ID="ee5b24a1f17c356dd5f6e37307922e39ddba12e5d2e203ed93401d7d05eb0dd194fb9070549c5dc31eb63f4e654dbd5a1d86cbb30c48e3ab1812590cd0f78539"

    部署成功后，系统中会自动生成几个 chaincode 容器，例如

    1. CONTAINER ID        IMAGE                                                                                                                                      COMMAND                  CREATED             STATUS              PORTS                                   NAMES
    2. e86c26bad76f        dev-vp1-ee5b24a1f17c356dd5f6e37307922e39ddba12e5d2e203ed93401d7d05eb0dd194fb9070549c5dc31eb63f4e654dbd5a1d86cbb30c48e3ab1812590cd0f78539   "/opt/gopath/bin/ee5b"   2 minutes ago       Up 2 minutes                                                dev-vp1-ee5b24a1f17c356dd5f6e37307922e39ddba12e5d2e203ed93401d7d05eb0dd194fb9070549c5dc31eb63f4e654dbd5a1d86cbb30c48e3ab1812590cd0f78539
    3. 597ebaf929a0        dev-vp2-ee5b24a1f17c356dd5f6e37307922e39ddba12e5d2e203ed93401d7d05eb0dd194fb9070549c5dc31eb63f4e654dbd5a1d86cbb30c48e3ab1812590cd0f78539   "/opt/gopath/bin/ee5b"   2 minutes ago       Up 2 minutes                                                dev-vp2-ee5b24a1f17c356dd5f6e37307922e39ddba12e5d2e203ed93401d7d05eb0dd194fb9070549c5dc31eb63f4e654dbd5a1d86cbb30c48e3ab1812590cd0f78539
    4. 8748a3b47312        dev-vp3-ee5b24a1f17c356dd5f6e37307922e39ddba12e5d2e203ed93401d7d05eb0dd194fb9070549c5dc31eb63f4e654dbd5a1d86cbb30c48e3ab1812590cd0f78539   "/opt/gopath/bin/ee5b"   2 minutes ago       Up 2 minutes                                                dev-vp3-ee5b24a1f17c356dd5f6e37307922e39ddba12e5d2e203ed93401d7d05eb0dd194fb9070549c5dc31eb63f4e654dbd5a1d86cbb30c48e3ab1812590cd0f78539
    5. 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。

    1. $ peer chaincode query -n ${CC_ID} -c '{"Function": "query", "Args": ["a"]}'
    2. 03:22:31.420 [chaincodeCmd] chaincodeInvokeOrQuery -> INFO 001 Successfully queried transaction: chaincodeSpec:<type:GOLANG chaincodeID:<name:"ee5b24a1f17c356dd5f6e37307922e39ddba12e5d2e203ed93401d7d05eb0dd194fb9070549c5dc31eb63f4e654dbd5a1d86cbb30c48e3ab1812590cd0f78539" > ctorMsg:<args:"query" args:"a" > >
    3. Query Result: 100
    4. 03:22:31.420 [main] main -> INFO 002 Exiting.....

    调用 chaincode

    a 向 b 转账 10 元。

    1. $ peer chaincode invoke -n ${CC_ID} -c '{"Function": "invoke", "Args": ["a", "b", "10"]}'
    2. 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)
    3. 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: ctorMsg: >
    Query Result: 90
    03:23:33.045 [main] main -> INFO 002 Exiting…..
    ···