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Golang 框架实战 -KisFlow 流式计算框架(1)- 概述
Golang 框架实战 -KisFlow 流式计算框架(2)- 我的项目构建 / 根底模块 -(上)
Golang 框架实战 -KisFlow 流式计算框架(3)- 我的项目构建 / 根底模块 -(下)
Golang 框架实战 -KisFlow 流式计算框架(4)- 数据流
Golang 框架实战 -KisFlow 流式计算框架(5)-Function 调度
4.1 Router
当初,将 KisFlow 提供对外 Function 开放注册能力,首先咱们要定义一些注册函数原型,和治理这些 Function 的 Router 映射关系类型。
创立kis-flow/kis/router.go
,定义原型如下:
kis-flow/kis/router.go
package kis
import "context"
// FaaS Function as a Service
type FaaS func(context.Context, Flow) error
// funcRouter
// key: Function Name
// value: Function 回调自定义业务
type funcRouter map[string]FaaS
// flowRouter
// key: Flow Name
// value: Flow
type flowRouter map[string]Flow
FaaS
:是开发者给 KisFlow 注册的 Function 回调业务函数原型,须要传递两个参数,Context 和 Flow,Context 次要承载业务的上线文环境,Flow 次要承载 KisFlow 的上下文环境,咱们能够通过 Flow 获取以后 Function 的配置信息,以后 Function 的数据信息,曾经 Flow 上其余节点的 Function 相干信息等。
funcRouter
: 治理 FunctionName 和 FaaS 业务回调的映射关系 Map,是一个公有类型,不对外提供援用。须要留神的是,funcRouter 的 key 是 FunctionName,因为 FunctionId 是生成的随机 Id,开发者在注册路由的时候,并无奈预判和可读,所以关联的业务回调是与 FunctionName 做的映射关系。
flowRouter
: 治理 FlowName 和 Flow 实例的映射关系 Map,是一个公有类型,不对外提供援用。flowRouter
仍然是 FlowName 的映射关系。
4.2 KisPool
KisFlow 提供一个用来治理全副全局映射关系的类KisPool
,KisPool 蕴含 Router,且提供对 Router 的治理能力。
4.2.1 KisPool 的定义
创立 kis-flow/kis/pool.go
文件,来创立 kis_pool
模块。
kis-flow/kis/pool.go
package kis
import (
"context"
"errors"
"fmt"
"kis-flow/log"
"sync"
)
var _poolOnce sync.Once
// kisPool 用于治理全副的 Function 和 Flow 配置的池子
type kisPool struct {
fnRouter funcRouter // 全副的 Function 治理路由
fnLock sync.RWMutex // fnRouter 锁
flowRouter flowRouter // 全副的 flow 对象
flowLock sync.RWMutex // flowRouter 锁
}
// 单例
var _pool *kisPool
// Pool 单例结构
func Pool() *kisPool {_poolOnce.Do(func() {
// 创立 kisPool 对象
_pool = new(kisPool)
// fnRouter 初始化
_pool.fnRouter = make(funcRouter)
// flowRouter 初始化
_pool.flowRouter = make(flowRouter)
})
return _pool
}
kis_pool
采纳单例模式,Pool()
办法为获取以后的单例,无关 fnRouter
和 flowRouter
在生命周期只会初始化一次,通过 sync.Once
来管制。
4.2.2 注册及获取 Flow
KisPool 能够提供增加和获取 Flow 信息的接口,如下:
kis-flow/kis/pool.go
func (pool *kisPool) AddFlow(name string, flow Flow) {pool.flowLock.Lock()
defer pool.flowLock.Unlock()
if _, ok := pool.flowRouter[name]; !ok {pool.flowRouter[name] = flow
} else {errString := fmt.Sprintf("Pool AddFlow Repeat FlowName=%s\n", name)
panic(errString)
}
log.Logger().InfoF("Add FlowRouter FlowName=%s\n", name)
}
func (pool *kisPool) GetFlow(name string) Flow {pool.flowLock.RLock()
defer pool.flowLock.RUnlock()
if flow, ok := pool.flowRouter[name]; ok {return flow} else {return nil}
}
AddFlow 会依据雷同的 FlowName 进行做反复校验,雷同的 Flow 无奈注册屡次。
4.2.3 注册及调度 Function
KisPool 提供注册 Funciton 回调和调度 Funciton 办法,如下。
kis-flow/kis/pool.go
// FaaS 注册 Function 计算业务逻辑, 通过 Function Name 索引及注册
func (pool *kisPool) FaaS(fnName string, f FaaS) {pool.fnLock.Lock()
defer pool.fnLock.Unlock()
if _, ok := pool.fnRouter[fnName]; !ok {pool.fnRouter[fnName] = f
} else {errString := fmt.Sprintf("KisPoll FaaS Repeat FuncName=%s", fnName)
panic(errString)
}
log.Logger().InfoF("Add KisPool FuncName=%s", fnName)
}
// CallFunction 调度 Function
func (pool *kisPool) CallFunction(ctx context.Context, fnName string, flow Flow) error {if f, ok := pool.fnRouter[fnName]; ok {return f(ctx, flow)
}
log.Logger().ErrorFX(ctx, "FuncName: %s Can not find in KisPool, Not Added.\n", fnName)
return errors.New("FuncName:" + fnName + "Can not find in NsPool, Not Added.")
}
在 CallFunction()
中,须要传递参数 Flow,作为数据流调度的上下文环境。开发者在自定义 FaaS 中能够通过 Flow 来获取一些 Funciton 信息,所以这里须要给 Flow 补充几个获取配置信息的接口,之后如果再须要,再持续补充,具体如下:
kis-flow/kis/flow.go
type Flow interface {
// Run 调度 Flow,顺次调度 Flow 中的 Function 并且执行
Run(ctx context.Context) error
// Link 将 Flow 中的 Function 依照配置文件中的配置进行连贯
Link(fConf *config.KisFuncConfig, fParams config.FParam) error
// CommitRow 提交 Flow 数据到行将执行的 Function 层
CommitRow(row interface{}) error
// Input 失去 flow 以后执行 Function 的输出源数据
Input() common.KisRowArr
// ++++++++++++++++++++++++++++++++++
// GetName 失去 Flow 的名称
GetName() string
// GetThisFunction 失去以后正在执行的 Function
GetThisFunction() Function
// GetThisFuncConf 失去以后正在执行的 Function 的配置
GetThisFuncConf() *config.KisFuncConfig}
kis-flow/flow/kis_flow.go
func (flow *KisFlow) GetName() string {return flow.Name}
func (flow *KisFlow) GetThisFunction() kis.Function {return flow.ThisFunction}
func (flow *KisFlow) GetThisFuncConf() *config.KisFuncConfig {return flow.ThisFunction.GetConfig()
}
4.3 KisFunction 援用 KisPool 调度
当初,咱们就能够在 KisFunctionX 中的 Call()
来通过 Pool 进行调度了,顺次批改每个 Function 的 Call()办法。
kis-flow/function/kis_function_c.go
package function
import (
"context"
"kis-flow/kis"
"kis-flow/log"
)
type KisFunctionC struct {BaseFunction}
func (f *KisFunctionC) Call(ctx context.Context, flow kis.Flow) error {log.Logger().InfoF("KisFunctionC, flow = %+v\n", flow)
// 通过 KisPool 路由到具体的执行计算 Function 中
if err := kis.Pool().CallFunction(ctx, f.Config.FName, flow); err != nil {log.Logger().ErrorFX(ctx, "Function Called Error err = %s\n", err)
return err
}
return nil
}
kis-flow/function/kis_function_e.go
package function
import (
"context"
"kis-flow/kis"
"kis-flow/log"
)
type KisFunctionE struct {BaseFunction}
func (f *KisFunctionE) Call(ctx context.Context, flow kis.Flow) error {log.Logger().InfoF("KisFunctionE, flow = %+v\n", flow)
// 通过 KisPool 路由到具体的执行计算 Function 中
if err := kis.Pool().CallFunction(ctx, f.Config.FName, flow); err != nil {log.Logger().ErrorFX(ctx, "Function Called Error err = %s\n", err)
return err
}
return nil
}
kis-flow/function/kis_function_l.go
package function
import (
"context"
"kis-flow/kis"
"kis-flow/log"
)
type KisFunctionL struct {BaseFunction}
func (f *KisFunctionL) Call(ctx context.Context, flow kis.Flow) error {log.Logger().InfoF("KisFunctionL, flow = %+v\n", flow)
// 通过 KisPool 路由到具体的执行计算 Function 中
if err := kis.Pool().CallFunction(ctx, f.Config.FName, flow); err != nil {log.Logger().ErrorFX(ctx, "Function Called Error err = %s\n", err)
return err
}
return nil
}
kis-flow/function/kis_function_s.go
package function
import (
"context"
"kis-flow/kis"
"kis-flow/log"
)
type KisFunctionS struct {BaseFunction}
func (f *KisFunctionS) Call(ctx context.Context, flow kis.Flow) error {log.Logger().InfoF("KisFunctionS, flow = %+v\n", flow)
// 通过 KisPool 路由到具体的执行计算 Function 中
if err := kis.Pool().CallFunction(ctx, f.Config.FName, flow); err != nil {log.Logger().ErrorFX(ctx, "Function Called Error err = %s\n", err)
return err
}
return nil
}
kis-flow/function/kis_function_v.go
package function
import (
"context"
"kis-flow/kis"
"kis-flow/log"
)
type KisFunctionV struct {BaseFunction}
func (f *KisFunctionV) Call(ctx context.Context, flow kis.Flow) error {log.Logger().InfoF("KisFunctionV, flow = %+v\n", flow)
// 通过 KisPool 路由到具体的执行计算 Function 中
if err := kis.Pool().CallFunction(ctx, f.Config.FName, flow); err != nil {log.Logger().ErrorFX(ctx, "Function Called Error err = %s\n", err)
return err
}
return nil
}
4.4 KisPool 单元测试
接下来咱们来针对 KisPool 进行单元测试。
4.4.1 自定义 FaaS
kis-flow/test/kis_pool_test.go
package test
import (
"context"
"fmt"
"kis-flow/common"
"kis-flow/config"
"kis-flow/flow"
"kis-flow/kis"
"testing"
)
func funcName1Handler(ctx context.Context, flow kis.Flow) error {fmt.Println("---> Call funcName1Handler ----")
for index, row := range flow.Input() {
// 打印数据
str := fmt.Sprintf("In FuncName = %s, FuncId = %s, row = %s", flow.GetThisFuncConf().FName, flow.GetThisFunction().GetId(), row)
fmt.Println(str)
// 计算结果数据
resultStr := fmt.Sprintf("data from funcName[%s], index = %d", flow.GetThisFuncConf().FName, index)
// 提交后果数据
_ = flow.CommitRow(resultStr)
}
return nil
}
func funcName2Handler(ctx context.Context, flow kis.Flow) error {for _, row := range flow.Input() {str := fmt.Sprintf("In FuncName = %s, FuncId = %s, row = %s", flow.GetThisFuncConf().FName, flow.GetThisFunction().GetId(), row)
fmt.Println(str)
}
return nil
}
4.4.2 注册 FaaS 及启动 Flow
kis-flow/test/kis_pool_test.go
func TestNewKisPool(t *testing.T) {ctx := context.Background()
// 0. 注册 Function
kis.Pool().FaaS("funcName1", funcName1Handler)
kis.Pool().FaaS("funcName2", funcName2Handler)
// 1. 创立 2 个 KisFunction 配置实例
source1 := config.KisSource{
Name: "公众号抖音商城户订单数据",
Must: []string{"order_id", "user_id"},
}
source2 := config.KisSource{
Name: "用户订单错误率",
Must: []string{"order_id", "user_id"},
}
myFuncConfig1 := config.NewFuncConfig("funcName1", common.C, &source1, nil)
if myFuncConfig1 == nil {panic("myFuncConfig1 is nil")
}
myFuncConfig2 := config.NewFuncConfig("funcName2", common.E, &source2, nil)
if myFuncConfig2 == nil {panic("myFuncConfig2 is nil")
}
// 2. 创立一个 KisFlow 配置实例
myFlowConfig1 := config.NewFlowConfig("flowName1", common.FlowEnable)
// 3. 创立一个 KisFlow 对象
flow1 := flow.NewKisFlow(myFlowConfig1)
// 4. 拼接 Functioin 到 Flow 上
if err := flow1.Link(myFuncConfig1, nil); err != nil {panic(err)
}
if err := flow1.Link(myFuncConfig2, nil); err != nil {panic(err)
}
// 5. 提交原始数据
_ = flow1.CommitRow("This is Data1 from Test")
_ = flow1.CommitRow("This is Data2 from Test")
_ = flow1.CommitRow("This is Data3 from Test")
// 6. 执行 flow1
if err := flow1.Run(ctx); err != nil {panic(err)
}
}
cd 到 kis-flow/test/
下执行命令:
go test -test.v -test.paniconexit0 -test.run TestNewKisPool
后果如下:
=== RUN TestNewKisPool
Add KisPool FuncName=funcName1
Add KisPool FuncName=funcName2
context.Background
====> After CommitSrcData, flow_name = flowName1, flow_id = flow-1fdae2bfac684f1d8edf89d9000208c0
All Level Data =
map[FunctionIdFirstVirtual:[This is Data1 from Test This is Data2 from Test This is Data3 from Test]]
KisFunctionC, flow = &{Id:flow-1fdae2bfac684f1d8edf89d9000208c0 Name:flowName1 Conf:0xc0000e27c0 Funcs:map[func-51527b72a4ee447fb0bd494bda9a84ad:0xc0000c0190 func-9cd2ab870b384794b312d2be10bb06fa:0xc0000c01e0] FlowHead:0xc0000c0190 FlowTail:0xc0000c01e0 flock:{w:{state:0 sema:0} writerSem:0 readerSem:0 readerCount:0 readerWait:0} ThisFunction:0xc0000c0190 ThisFunctionId:func-51527b72a4ee447fb0bd494bda9a84ad PrevFunctionId:FunctionIdFirstVirtual funcParams:map[func-51527b72a4ee447fb0bd494bda9a84ad:map[] func-9cd2ab870b384794b312d2be10bb06fa:map[]] fplock:{w:{state:0 sema:0} writerSem:0 readerSem:0 readerCount:0 readerWait:0} buffer:[] data:map[FunctionIdFirstVirtual:[This is Data1 from Test This is Data2 from Test This is Data3 from Test]] inPut:[This is Data1 from Test This is Data2 from Test This is Data3 from Test]}
---> Call funcName1Handler ----
In FuncName = funcName1, FuncId = func-51527b72a4ee447fb0bd494bda9a84ad, row = This is Data1 from Test
In FuncName = funcName1, FuncId = func-51527b72a4ee447fb0bd494bda9a84ad, row = This is Data2 from Test
In FuncName = funcName1, FuncId = func-51527b72a4ee447fb0bd494bda9a84ad, row = This is Data3 from Test
context.Background
====> After commitCurData, flow_name = flowName1, flow_id = flow-1fdae2bfac684f1d8edf89d9000208c0
All Level Data =
map[FunctionIdFirstVirtual:[This is Data1 from Test This is Data2 from Test This is Data3 from Test] func-51527b72a4ee447fb0bd494bda9a84ad:[data from funcName[funcName1], index = 0 data from funcName[funcName1], index = 1 data from funcName[funcName1], index = 2]]
KisFunctionE, flow = &{Id:flow-1fdae2bfac684f1d8edf89d9000208c0 Name:flowName1 Conf:0xc0000e27c0 Funcs:map[func-51527b72a4ee447fb0bd494bda9a84ad:0xc0000c0190 func-9cd2ab870b384794b312d2be10bb06fa:0xc0000c01e0] FlowHead:0xc0000c0190 FlowTail:0xc0000c01e0 flock:{w:{state:0 sema:0} writerSem:0 readerSem:0 readerCount:0 readerWait:0} ThisFunction:0xc0000c01e0 ThisFunctionId:func-9cd2ab870b384794b312d2be10bb06fa PrevFunctionId:func-51527b72a4ee447fb0bd494bda9a84ad funcParams:map[func-51527b72a4ee447fb0bd494bda9a84ad:map[] func-9cd2ab870b384794b312d2be10bb06fa:map[]] fplock:{w:{state:0 sema:0} writerSem:0 readerSem:0 readerCount:0 readerWait:0} buffer:[] data:map[FunctionIdFirstVirtual:[This is Data1 from Test This is Data2 from Test This is Data3 from Test] func-51527b72a4ee447fb0bd494bda9a84ad:[data from funcName[funcName1], index = 0 data from funcName[funcName1], index = 1 data from funcName[funcName1], index = 2]] inPut:[data from funcName[funcName1], index = 0 data from funcName[funcName1], index = 1 data from funcName[funcName1], index = 2]}
In FuncName = funcName2, FuncId = func-9cd2ab870b384794b312d2be10bb06fa, row = data from funcName[funcName1], index = 0
In FuncName = funcName2, FuncId = func-9cd2ab870b384794b312d2be10bb06fa, row = data from funcName[funcName1], index = 1
In FuncName = funcName2, FuncId = func-9cd2ab870b384794b312d2be10bb06fa, row = data from funcName[funcName1], index = 2
--- PASS: TestNewKisPool (0.00s)
PASS
ok kis-flow/test 0.520s
通过日志的具体校验,后果是合乎咱们预期的。
好了,当初 Function 的业务能力曾经凋谢给开发者了,接下来咱们来持续欠缺 KisFlow 的能力。
4.5【V0.3】源代码
https://github.com/aceld/kis-flow/releases/tag/v0.3
作者: 刘丹冰 Aceld github: https://github.com/aceld
KisFlow 开源我的项目地址:https://github.com/aceld/kis-flow
Golang 框架实战 -KisFlow 流式计算框架(1)- 概述
Golang 框架实战 -KisFlow 流式计算框架(2)- 我的项目构建 / 根底模块 -(上)
Golang 框架实战 -KisFlow 流式计算框架(3)- 我的项目构建 / 根底模块 -(下)
Golang 框架实战 -KisFlow 流式计算框架(4)- 数据流
Golang 框架实战 -KisFlow 流式计算框架(5)-Function 调度