贡献一段任意参数支持的代码思路；替换原本的pkg/infra/trafficGenerator/proposal.go:CreateProposal方法

[neusoft-worker]

• 如下代码目前可以支持大部分的任意参数场景，尤其是json对象参数

package trafficGenerator

import (
	"fmt"
	"github.com/hyperledger/fabric-protos-go/common"
	"github.com/hyperledger/fabric-protos-go/peer"
	"regexp"
	"strconv"
	"strings"
	"tape/internal/fabric/protoutil"
	"tape/pkg/ext/log"
	"tape/pkg/infra"
)

var (
	uuidReg         *regexp.Regexp = regexp.MustCompile(`uuid\(\)`)
	randomIntReg    *regexp.Regexp = regexp.MustCompile(`randomInt\((\d+),\s?(\d+)\)`)
	randomStringReg *regexp.Regexp = regexp.MustCompile(`randomString\((\d+)\)`)
	fmtReg          *regexp.Regexp = regexp.MustCompile(`fmt.Sprintf\((.*)\)`)
)

func CreateProposalExt(signer infra.Crypto, channel, ccname, version string, argsFuncs []func() string) (*peer.Proposal, error) {

	var argsInByte [][]byte
	for _, argF := range argsFuncs {
		argsInByte = append(argsInByte, []byte(argF()))
	}

	spec := &peer.ChaincodeSpec{
		Type:        peer.ChaincodeSpec_GOLANG,
		ChaincodeId: &peer.ChaincodeID{Name: ccname, Version: version},
		Input:       &peer.ChaincodeInput{Args: argsInByte},
	}

	invocation := &peer.ChaincodeInvocationSpec{ChaincodeSpec: spec}

	creator, err := signer.Serialize()
	if err != nil {
		return nil, err
	}

	prop, _, err := protoutil.CreateChaincodeProposal(common.HeaderType_ENDORSER_TRANSACTION, channel, invocation, creator)
	if err != nil {
		return nil, err
	}

	return prop, nil
}

func findFuncs(args []string) []func() string {
	var argFuncs []func() string
	for _, arg := range args {
		log.Log().Debugln(arg)
		if fmtReg.MatchString(arg) {
			fs := fmtReg.FindSubmatch([]byte(arg))
			fsa := strings.Split(string(fs[1]), ", ")
			format := fsa[0]
			formatFuncs := findFuncs(fsa[1:])
			argFuncs = append(argFuncs, func() string {
				var a []interface{}
				for _, f := range formatFuncs {
					a = append(a, f())
				}
				return fmt.Sprintf(format, a...)
			})
		} else {
			argFuncs = append(argFuncs, findFunc(arg))
		}
	}
	return argFuncs
}

func findFunc(s string) func() string {
	if uuidReg.MatchString(s) {
		return func() string {
			return newUUID()
		}
	} else if randomIntReg.MatchString(s) {
		f := randomIntReg.FindSubmatch([]byte(s))
		fmt.Printf("%q", f)
		d1, err := strconv.Atoi(string(f[1]))
		if err != nil {
			panic(err)
		}
		d2, err := strconv.Atoi(string(f[2]))
		if err != nil {
			panic(err)
		}
		return func() string {
			return strconv.Itoa(randomInt(d1, d2))
		}
	} else if randomStringReg.MatchString(s) {
		f := randomStringReg.FindSubmatch([]byte(s))
		fmt.Printf("%q", f)
		d, err := strconv.Atoi(string(f[1]))
		if err != nil {
			panic(err)
		}
		return func() string {
			return randomString(d)
		}
	} else {
		//不做任何变换
		return func() string {
			return s
		}
	}
}

• 调用部分如下:

func (initiator *Initiator) Start() {

	initiator.statRaw = stat.StartNewStatx(1, "Raw Create")
	limit := rate.Inf
	ctx := context.Background()
	if initiator.R > 0 {
		limit = rate.Limit(initiator.R)
	}
	limiter := rate.NewLimiter(limit, initiator.Burst)
	argFuncs := findFuncs(initiator.Config.Args) //初始化一次

	for i := 0; i < initiator.Num; i++ {
		prop, err := CreateProposalExt(
			initiator.Crypto,
			initiator.Config.Channel,
			initiator.Config.Chaincode,
			initiator.Config.Version,
			argFuncs, //传入动态函数
		)
//...

• 配置文件写法, 如下

args:
  - put
  - fmt.Sprintf(key:%s, randomInt(1,50))
  - fmt.Sprintf({"k1":"%s","key2":"%s","keys":"%s"}, uuid(), randomInt(10000,20000), randomString(10))
  - uuid()

[SamYuan1990]

建议开个pr上来。
正则是很好的改进方向。
不过
既然我们选择了正则表达式，就不需要支持fmt在配置里了吧？

- (key:randomInt1_50)
- {"k1":"uuid","key2":"randomInt10000_20000","keys":" randomString10"}

但是这样的话就没办法区分uuid，如果原本字符就是uuid的话。

[neusoft-worker]

这个可能不太容易实现所谓的通用正则， 正像我实现的那样，我们有三个基本函数，uuid(), randomInt(a,b), randomString(a)，剩下还有一个就是组合使用这三个基本函数 ，也是对这三个方法调用的模式匹配。至于要不要以fmt开头，实际上是另外一个用以区分那三个方法的标记，因为我们除了随机方法，还有常量字符串。之所以选择了uuid(), randomInt(a,b)这种格式的匹配，是因为它更贴近与函数的表达。回头如果我们增加了第四个，第五个基础函数，也容易理解进来。

…

________________________________ 蒋帅 技术发展部（TDD） 东软集团股份有限公司 沈阳浑南新区新秀街2号东软软件园A1 Postcode:110179 Mobile：13211110015 Tel: 024-83660446 发件人： Sam ***@***.***> 发送时间： 2021-08-16 18:41 收件人： ***@***.***> 抄送： ***@***.***>; ***@***.***> 主题： Re: [Hyperledger-TWGC/tape] 贡献一段任意参数支持的代码思路；替换原本的pkg/infra/trafficGenerator/proposal.go:CreateProposal方法 (#200) 建议开个pr上来。 正则是很好的改进方向。 不过 既然我们选择了正则表达式，就不需要支持fmt在配置里了吧？ - (key:randomInt1_50) - {"k1":"uuid","key2":"randomInt10000_20000","keys":" randomString10"} 但是这样的话就没办法区分uuid，如果原本字符就是uuid的话。 — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub<#200 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/AIC7FIBRLLW77OLSGNME7ITT5DTNPANCNFSM5CG27GOA>. Triage notifications on the go with GitHub Mobile for iOS<https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android<https://play.google.com/store/apps/details?id=com.github.android&utm_campaign=notification-email>.

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[SamYuan1990]

我觉得如果要考虑json格式的话可能这样会比较方便，相比较于fmt，不知道@guoger什么看法。

- (key:randomInt1_50)
- {"k1":"uuid","key2":"randomInt10000_20000","keys":" randomString10"}

[SamYuan1990]

稍微做个了实现，在pr里。请参考。

[stale]

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