Hyperledger Fabric 1.0 實戰學習(三) chaincode開發和部署實戰1

之前主要講解了fabric的環境搭建、chaincode go語言的重要的接口等，本節基于之前的知識和環境結合病人資訊儲存和查詢場景進行開發。 1.chaincode go語言編寫代碼中主要包含儲存病人資訊和查詢的代碼實作，chaincode的位置放在 /opt/gopath/src/github.com/hyperledger/fabric/examples/chaincode/go/hosinfo

package main

import (
	"fmt"

	"github.com/hyperledger/fabric/core/chaincode/shim"
	pb "github.com/hyperledger/fabric/protos/peer"
)

// SimpleChaincode example simple Chaincode implementation
type SimpleChaincode struct {
}

func (t *SimpleChaincode) Init(stub shim.ChaincodeStubInterface) pb.Response {
	fmt.Println("chaincode03 Init Success!")
	return shim.Success(nil)
}

func (t *SimpleChaincode) Invoke(stub shim.ChaincodeStubInterface) pb.Response {
	fmt.Println("chaincode03 Invoke")
	function, args := stub.GetFunctionAndParameters()
	if function == "putvalue" { //儲存病人資訊
		return t.invoke(stub, args)
	} else if function == "query" {//查詢病人資訊
		return t.query(stub, args)
	}

	return shim.Error("Invalid 03 invoke function name. Expecting \"put\" \"query\"")
}

func (t *SimpleChaincode) invoke(stub shim.ChaincodeStubInterface, args []string) pb.Response {
	var A, B string    // Entities
	var err error

	A = args[0]
	B = args[1]
        fmt.Println("chaincode03 Invoke arg "+A +","+B)
	err = stub.PutState(A, []byte(B))
  	fmt.Println("chaincode03 Invoke  put Success  arg "+A +","+B)	
	if err != nil {
		return shim.Error(err.Error())
	}
	//valbytes, err := stub.GetState(A)
	//fmt.Println("chaincode03 Invoke  get  Success  arg "+string(valbytes))
        
	return shim.Success(nil)
}


// query callback representing the query of a chaincode
func (t *SimpleChaincode) query(stub shim.ChaincodeStubInterface, args []string) pb.Response {
	var A string // Entities
	var err error
	A = args[0]
	fmt.Println("chaincode03 query  arg "+A )
	// Get the state from the ledger
	Avalbytes, err := stub.GetState(A)
	if err != nil {
		jsonResp := "{\"Error\":\"Failed to get state for " + A + "\"}"
		return shim.Error(jsonResp)
	}

	jsonResp := "{\"Name\":\"" + A + "\",\"Amount\":\"" + string(Avalbytes) + "\"}"
	fmt.Printf("Query Response:%s\n", jsonResp)
	return shim.Success(Avalbytes)
}

func main() {
	err := shim.Start(new(SimpleChaincode))
	if err != nil {
		fmt.Printf("Error starting Simple chaincode: %s", err)
	}
}

2.chaincode部署在fabric啟動之後，進行cli，就可以進行chaincode的安裝和部署了，通過終端操作可以觀察到簡單進行了病人資訊的存儲和查詢，病人的資訊 "1001","lilin_cold"分别表示個人編号和姓名_患病,這塊資訊可以自己進行擴充。

[[email protected] e2e_cli]# docker exec -it cli bash
[email protected]:/opt/gopath/src/github.com/hyperledger/fabric/peer# 
[email protected]:/opt/gopath/src/github.com/hyperledger/fabric/peer# peer chaincode install -n hosinfo -v 1.0 -p github.com/hyperledger/fabric/examples/chaincode/go/hosinfo
2018-06-29 15:31:57.579 UTC [msp] GetLocalMSP -> DEBU 001 Returning existing local MSP
2018-06-29 15:31:57.579 UTC [msp] GetDefaultSigningIdentity -> DEBU 002 Obtaining default signing identity
2018-06-29 15:31:57.579 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 003 Using default escc
2018-06-29 15:31:57.579 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 004 Using default vscc
2018-06-29 15:31:57.579 UTC [chaincodeCmd] getChaincodeSpec -> DEBU 005 java chaincode disabled
2018-06-29 15:31:57.623 UTC [golang-platform] getCodeFromFS -> DEBU 006 getCodeFromFS github.com/hyperledger/fabric/examples/chaincode/go/hosinfo
2018-06-29 15:31:57.770 UTC [golang-platform] func1 -> DEBU 007 Discarding GOROOT package fmt
2018-06-29 15:31:57.770 UTC [golang-platform] func1 -> DEBU 008 Discarding provided package github.com/hyperledger/fabric/core/chaincode/shim
2018-06-29 15:31:57.770 UTC [golang-platform] func1 -> DEBU 009 Discarding provided package github.com/hyperledger/fabric/protos/peer
2018-06-29 15:31:57.770 UTC [golang-platform] GetDeploymentPayload -> DEBU 00a done
2018-06-29 15:31:57.770 UTC [container] WriteFileToPackage -> DEBU 00b Writing file to tarball: src/github.com/hyperledger/fabric/examples/chaincode/go/hosinfo/hosinfo.go
2018-06-29 15:31:57.772 UTC [msp/identity] Sign -> DEBU 00c Sign: plaintext: 0AB8070A5C08031A0C08EDA1D9D90510...FEBAF8330000FFFF6F09669100120000 
2018-06-29 15:31:57.772 UTC [msp/identity] Sign -> DEBU 00d Sign: digest: 1BCFFF07E3B46C589FCB46DF8121A33484A0138CA2EB7E0A6D4447206761F379 
2018-06-29 15:31:57.776 UTC [chaincodeCmd] install -> DEBU 00e Installed remotely response:<status:200 payload:"OK" > 
2018-06-29 15:31:57.776 UTC [main] main -> INFO 00f Exiting.....
[email protected]:/opt/gopath/src/github.com/hyperledger/fabric/peer# peer chaincode instantiate -o orderer.example.com:7050 --tls --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 hosinfo -v 1.0 -c '{"Args":["init"]}' -P "OR ('Org1MSP.peer','Org2MSP.peer')"
2018-06-29 15:32:06.873 UTC [msp] GetLocalMSP -> DEBU 001 Returning existing local MSP
2018-06-29 15:32:06.873 UTC [msp] GetDefaultSigningIdentity -> DEBU 002 Obtaining default signing identity
2018-06-29 15:32:06.881 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 003 Using default escc
2018-06-29 15:32:06.881 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 004 Using default vscc
2018-06-29 15:32:06.881 UTC [chaincodeCmd] getChaincodeSpec -> DEBU 005 java chaincode disabled
2018-06-29 15:32:06.881 UTC [msp/identity] Sign -> DEBU 006 Sign: plaintext: 0AC3070A6708031A0C08F6A1D9D90510...535010030A04657363630A0476736363 
2018-06-29 15:32:06.881 UTC [msp/identity] Sign -> DEBU 007 Sign: digest: 05A4CB3FD0BB270783F15859B83D8E481B13A9AE42FE757BB4B1BE4D1D0B61B9 
2018-06-29 15:32:23.126 UTC [msp/identity] Sign -> DEBU 008 Sign: plaintext: 0AC3070A6708031A0C08F6A1D9D90510...C34C76EFC68231E87EE95CEA63DCCC00 
2018-06-29 15:32:23.126 UTC [msp/identity] Sign -> DEBU 009 Sign: digest: 34A095F22DA4359FA7C3939F5958E5447FC09B238784D781F7DDE6DEEC693872 
2018-06-29 15:32:23.133 UTC [main] main -> INFO 00a Exiting.....
[email protected]:/opt/gopath/src/github.com/hyperledger/fabric/peer# 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  hosinfo -c '{"Args":["putvalue","1001","lilin_cold"]}'
2018-06-29 15:32:25.430 UTC [msp] GetLocalMSP -> DEBU 001 Returning existing local MSP
2018-06-29 15:32:25.431 UTC [msp] GetDefaultSigningIdentity -> DEBU 002 Obtaining default signing identity
2018-06-29 15:32:25.437 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 003 Using default escc
2018-06-29 15:32:25.437 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 004 Using default vscc
2018-06-29 15:32:25.437 UTC [chaincodeCmd] getChaincodeSpec -> DEBU 005 java chaincode disabled
2018-06-29 15:32:25.437 UTC [msp/identity] Sign -> DEBU 006 Sign: plaintext: 0AC6070A6A08031A0C0889A2D9D90510...313030310A0A6C696C696E5F636F6C64 
2018-06-29 15:32:25.437 UTC [msp/identity] Sign -> DEBU 007 Sign: digest: 74D9040CA7904C04BDDA1DB51098DF1DCDE5D67B85AB1F177BF32F5CB29B93DC 
2018-06-29 15:32:25.445 UTC [msp/identity] Sign -> DEBU 008 Sign: plaintext: 0AC6070A6A08031A0C0889A2D9D90510...FA680351ED183C0E25FD43771E877AF9 
2018-06-29 15:32:25.445 UTC [msp/identity] Sign -> DEBU 009 Sign: digest: 9E725ADD40426B5E4477E47D40B21E51C912A4C8C1C507C011FD92E9A1E87F7F 
2018-06-29 15:32:25.459 UTC [chaincodeCmd] chaincodeInvokeOrQuery -> DEBU 00a ESCC invoke result: version:1 response:<status:200 message:"OK" > payload:"\n \036\247\247\376X\317\362O\2400\330\375Z\350\265\327\345eZ\031U\217s\003U\266\274\352\316\0242\t\022Y\nB\022'\n\007hosinfo\022\034\n\006\n\0041001\032\022\n\0041001\032\nlilin_cold\022\027\n\004lscc\022\017\n\r\n\007hosinfo\022\002\010\005\032\003\010\310\001\"\016\022\007hosinfo\032\0031.0" endorsement:<endorser:"\n\007Org1MSP\022\252\006-----BEGIN CERTIFICATE-----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\n1d/FSi5NNEjoRpiiiUX2dijx07oaYfAMosBqmKg=\n-----END CERTIFICATE-----\n" signature:"0E\002!\000\276\372\002L\2223\310\373\263*e\217-\340\203\226\241`\231\014,\355\351\316\275W\037&e\275\[email protected]\002 J?\365\030U\273\232\366\r\000\017\365\370\215\365\334\372h\003Q\355\030<\016%\375Cw\036\207z\371" > 
2018-06-29 15:32:25.459 UTC [chaincodeCmd] chaincodeInvokeOrQuery -> INFO 00b Chaincode invoke successful. result: status:200 
2018-06-29 15:32:25.459 UTC [main] main -> INFO 00c Exiting.....
[email protected]:/opt/gopath/src/github.com/hyperledger/fabric/peer# peer chaincode query -C mychannel -n hosinfo  -c '{"Args":["query","1001"]}'
2018-06-29 15:32:37.428 UTC [msp] GetLocalMSP -> DEBU 001 Returning existing local MSP
2018-06-29 15:32:37.428 UTC [msp] GetDefaultSigningIdentity -> DEBU 002 Obtaining default signing identity
2018-06-29 15:32:37.428 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 003 Using default escc
2018-06-29 15:32:37.428 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 004 Using default vscc
2018-06-29 15:32:37.429 UTC [chaincodeCmd] getChaincodeSpec -> DEBU 005 java chaincode disabled
2018-06-29 15:32:37.429 UTC [msp/identity] Sign -> DEBU 006 Sign: plaintext: 0AC6070A6A08031A0C0895A2D9D90510...6F1A0D0A0571756572790A0431303031 
2018-06-29 15:32:37.429 UTC [msp/identity] Sign -> DEBU 007 Sign: digest: 15280EA82002181C1CC7B3A3C948B749A412123C8B4C3F2D2870C08E206CEA74 
Query Result: lilin_cold
2018-06-29 15:32:37.436 UTC [main] main -> INFO 008 Exiting.....
[email protected]:/opt/gopath/src/github.com/hyperledger/fabric/peer#

目前部落格更新可能有點慢，歡迎大家郵件進行技術交流。郵件:[email protected]

Hyperledger Fabric 1.0 實戰學習(三) chaincode開發和部署實戰1

繼續閱讀

openstack安裝指南_5個使用OpenStack的新指南

openstack安裝指南_3個新的OpenStack指南

Hyperledger Fabric（術語表）

Why and How zk-SNARK Works 1: Introduction & the Medium of a Proof

Cisco官方網站悄然換标

火币鍊轉賬

火币鍊節點監聽記錄火币鍊節點監聽記錄

世鍊投研| 僅一個月追趕DeFi？火币生态鍊Heco有何過人之處？

HyperGraph(HGT)—Heco生态鍊3月最重磅項目釋出

币安鍊、火币鍊提前預知配對合約位址方法Solidity代碼

區塊鍊可能會如何改變音樂行業？

fabric go語言鍊碼打包并在其他Peer節點部署

比特币下跌與加密貨币的關聯效應（附代碼）

在擁有比特币之前了解區塊鍊錢包開發

2021-09-30一碼在手安全無憂從農田到餐桌，全流程追溯四大子產品，助力客戶實作品牌化

寫作一段時間後，我的反思