├── .eslintrc ├── .gitignore ├── .prettierrc ├── LICENSE ├── README.md ├── examples └── sample │ ├── index.ts │ ├── package-lock.json │ └── package.json ├── img └── workflow.png ├── jest.config.js ├── package-lock.json ├── package.json ├── src ├── constants │ └── index.ts ├── controllers │ ├── execution.ts │ ├── index.ts │ ├── task.ts │ └── workflow.ts ├── core.ts ├── crudable.ts ├── interpreter │ └── index.ts ├── localCrud.ts ├── microflow.ts ├── storage │ └── index.ts ├── types.ts └── utils │ ├── convert.ts │ ├── index.ts │ ├── task.ts │ └── xstate.ts ├── tests ├── atomicNodeInitial.test.ts ├── taskMapSyncNode.test.ts ├── taskNodeInitial.test.ts ├── taskSyncNode.test.ts ├── taskToken.test.ts └── utils │ └── index.test.ts └── tsconfig.json /.eslintrc: -------------------------------------------------------------------------------- 1 | { 2 | "root": true, 3 | "parser": "@typescript-eslint/parser", 4 | "plugins": ["@typescript-eslint"], 5 | "rules": { 6 | "quotes": [2, "single", { "avoidEscape": true }], 7 | "@typescript-eslint/no-explicit-any": 0 8 | }, 9 | "extends": [ 10 | "eslint:recommended", 11 | "plugin:@typescript-eslint/eslint-recommended", 12 | "plugin:@typescript-eslint/recommended" 13 | ] 14 | } 15 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | node_modules 2 | lib 3 | test 4 | .DS_Store 5 | .history -------------------------------------------------------------------------------- /.prettierrc: -------------------------------------------------------------------------------- 1 | { 2 | "printWidth": 80, 3 | "tabWidth": 2, 4 | "useTabs": false, 5 | "semi": true, 6 | "singleQuote": true, 7 | "trailingComma": "none", 8 | "bracketSpacing": true 9 | } -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) 2020 Karan Chhabra 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 |

Welcome to microflow 👋

2 |

3 | 4 | Version 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | License: MIT 14 | 15 |

16 | 17 | > Finite state machine based HTTP microservice orchestration 18 | 19 | ### 🏠 [Homepage](https://github.com/krn0x2/microflow#readme) 20 | 21 | ## Purpose 22 | 23 | Microflow helps you build and run complex workflows which are composed of HTTP microservices and manual (human moderator) stages, all by definiing a JSON workflow blueprint. It is built on robust concepts of __finite state machine__, and allows you to control input/output data as template variables (think jsonpath, handlebars). 24 | A workflow consists of manual states and __task__ states (aka HTTP workers which could be sync/async). 25 | 26 | License: MIT

27 | 28 | ## Install 29 | npm 30 | ```sh 31 | npm i --save microflow@alpha 32 | ``` 33 | 34 | ## Documentation 35 | 36 | The `Microflow` class provides various methods to author/execute/infer workflow and workflow instances 37 | 38 | ```javascript 39 | import { Microflow } from "microflow"; 40 | 41 | const flow = new Microflow({ 42 | jwt: { 43 | secretOrPublicKey: 'dummySecretKey', 44 | sign: { 45 | expiresIn: '1h' 46 | } 47 | } 48 | }); 49 | 50 | const { 51 | // task interface 52 | task, 53 | // workflow interface 54 | workflow, 55 | // execution interface 56 | execution, 57 | } = flow; 58 | ``` 59 | 60 | ## Usage 61 | 62 | ```javascript 63 | import { Microflow } from "microflow"; 64 | 65 | const flow = new Microflow({ 66 | // bring your own persistence here 67 | // (implements MicroflowStorage) 68 | storage: undefined, 69 | jwt: { 70 | secretOrPublicKey: 'dummySecretKey', 71 | sign: { 72 | expiresIn: '1h' 73 | } 74 | } 75 | }); 76 | 77 | // Authoring task and workflow 78 | 79 | // Register a task 80 | const task = await flow.task.create({ 81 | // Recognisiable identified for the task 82 | id: 'airflow', 83 | // type of task (only 'http' supported right now) 84 | type: 'http', 85 | // supported (https://github.com/axios/axios/blob/master/index.d.ts#L44) 86 | config: { 87 | url: 'http://localhost:1000/api/experimental/dags/{{dagId}}/dag_runs', 88 | headers: { 89 | 'Cache-Control': 'no-cache', 90 | 'Content-Type': 'application/json' 91 | }, 92 | data: { 93 | conf: { 94 | // $ is a reference to 'parameters' object of a task in the workflow 95 | actualData: '$.data', 96 | token: '$.token', 97 | envKey: '$.envKey', 98 | executionId: '$.executionId' 99 | } 100 | }, 101 | method: 'post' 102 | } 103 | }); 104 | 105 | const { id: taskId } = await task.data(); 106 | 107 | // Create a workflow 108 | const workflow = await flow.workflow.create({ 109 | id: 'sample', 110 | config: { 111 | initial: 'auto_test_1', 112 | states: { 113 | auto_test_1: { 114 | type: 'task', 115 | taskId, 116 | parameters: { 117 | //example of constant 118 | dagId: 'dag1', 119 | // $ = input event data to the task state 120 | data: '$', 121 | // $$ = Execution context object 122 | token: '$$.task.token', 123 | // $$$ = process.env aka environment variables 124 | envKey: '$$$.myKey1', 125 | executionId: '$$.executionId' 126 | }, 127 | onDone: { 128 | target: 'ready_for_approval', 129 | resultSelector: { 130 | a: 'a', 131 | b: 'b', 132 | out: '$' 133 | }, 134 | resultPath: '$.pipeline1.success' 135 | }, 136 | onError: { 137 | target: 'failed', 138 | resultSelector: { 139 | c: 'c', 140 | d: 'd', 141 | out: '$' 142 | }, 143 | resultPath: '$.pipeline1.error' 144 | } 145 | }, 146 | ready_for_approval: { 147 | type: 'atomic', 148 | on: { 149 | reject: { 150 | target: 'failed', 151 | resultPath: '$.reject.data' 152 | }, 153 | approve: { 154 | target: 'auto_test_2', 155 | resultPath: '$.approval.data' 156 | } 157 | } 158 | }, 159 | auto_test_2: { 160 | type: 'task', 161 | taskId, 162 | parameters: { 163 | dagId: 'dag2', 164 | data: '$', 165 | token: '$$.task.token', 166 | envKey: '$$$.myKey1', 167 | executionId: '$$.executionId' 168 | }, 169 | onDone: { 170 | target: 'done', 171 | resultSelector: { 172 | e: 'e', 173 | out: '$' 174 | }, 175 | resultPath: '$.pipeline2.success' 176 | }, 177 | onError: { 178 | target: 'failed', 179 | resultSelector: { 180 | f: 'f', 181 | out: '$' 182 | }, 183 | resultPath: '$.pipeline2.error' 184 | } 185 | }, 186 | done: { 187 | type: 'final' 188 | }, 189 | failed: { 190 | type: 'final' 191 | } 192 | } 193 | } 194 | }); 195 | 196 | // start an execution with initial data 197 | const execution = await workflow.start({ 198 | input1: 'val1', 199 | input2: 'val2' 200 | }); 201 | 202 | // Sending events to an execution 203 | await execution.send({ 204 | type: 'success-auto_test_1', 205 | data: { 206 | test_a_result: true, 207 | test_b_result: false 208 | } 209 | }); 210 | 211 | await execution.send({ 212 | type: 'approve', 213 | data: { 214 | message: 'The acceptance test was fine' 215 | } 216 | }); 217 | 218 | await execution.send({ 219 | type: 'success-auto_test_2', 220 | data: { 221 | test_c_result: true 222 | } 223 | }); 224 | 225 | const { completed, output, state } = await execution.data(); 226 | 227 | console.log(output); 228 | /* 229 | { 230 | "input1": "val1", 231 | "input2": "val2", 232 | "pipeline1": { 233 | "success": { 234 | "a": "a", 235 | "b": "b", 236 | "out": { 237 | "test_a_result": true, 238 | "test_b_result": false 239 | } 240 | } 241 | }, 242 | "approval": { 243 | "data": { 244 | "message": "The acceptance test was fine" 245 | } 246 | }, 247 | "pipeline2": { 248 | "success": { 249 | "e": "e", 250 | "out": { 251 | "test_c_result": true 252 | } 253 | } 254 | } 255 | } 256 | */ 257 | 258 | ``` 259 | ## Storage 260 | 261 | ```javascript 262 | import { Microflow } from "microflow"; 263 | import { MicroflowStorage } from "microflow/types"; 264 | 265 | // define your own storage from MicroflowStorage abstract class 266 | class MyStorage implements IMicroflowStorage { 267 | workflow: ICrudable; 268 | task: ICrudable; 269 | execution: ICrudable; 270 | // define CRUD functions 271 | constructor(){ 272 | this.workflow = { 273 | //define CRUD implementation here 274 | } 275 | 276 | this.task = { 277 | //define CRUD implementation here 278 | } 279 | 280 | this.execution = { 281 | //define CRUD implementation here 282 | } 283 | } 284 | } 285 | 286 | 287 | const store = new MyStorage(); 288 | 289 | // create an instance of microflow with custom store injected 290 | const flow = new Microflow({ 291 | storage: store, 292 | jwt: { 293 | secretOrPublicKey: 'dummySecretKey', 294 | sign: { 295 | expiresIn: '1h' 296 | } 297 | } 298 | }); 299 | ``` 300 | 301 | ## Examples 302 | 303 | Navigate to `examples/basic` to run a sample express project with ephemeral storage. 304 | 305 | ## Run tests 306 | 307 | ```sh 308 | npm run test 309 | ``` 310 | 311 | ## Author 312 | 313 | 👤 **Karan Chhabra** 314 | 315 | * Github: [@krn0x2](https://github.com/krn0x2) 316 | * LinkedIn: [@krn0x2](https://linkedin.com/in/krn0x2) 317 | 318 | ## 🤝 Contributing 319 | 320 | Contributions, issues and feature requests are welcome!
Feel free to check [issues page](https://github.com/krn0x2/microflow/issues). You can also take a look at the [contributing guide](https://github.com/krn0x2/microflow/blob/master/CONTRIBUTING.md). 321 | 322 | ## Show your support 323 | 324 | Give a ⭐️ if this project helped you! 325 | 326 | ## 📝 License 327 | 328 | Copyright © 2020 [Karan Chhabra](https://github.com/krn0x2).
329 | This project is [MIT](https://github.com/krn0x2/microflow/blob/master/LICENSE) licensed. 330 | -------------------------------------------------------------------------------- /examples/sample/index.ts: -------------------------------------------------------------------------------- 1 | import express from 'express'; 2 | import bodyParser from 'body-parser'; 3 | import { Microflow } from '../../src/microflow'; 4 | 5 | const app = express(); 6 | const port = 5000; 7 | const PATH = 'microflow'; 8 | 9 | const microflowService = new Microflow({ 10 | jwt: { 11 | secretOrPublicKey: 'shhhhh', 12 | sign: { 13 | expiresIn: '24h' 14 | } 15 | } 16 | }); 17 | 18 | app.use(bodyParser.json()); 19 | 20 | // Register task 21 | app.post(`/${PATH}/task`, async (req, res) => { 22 | const { body } = req; 23 | const task = await microflowService.task.create(body); 24 | const response = await task.data(); 25 | return res.status(200).json(response); 26 | }); 27 | 28 | // Query task 29 | app.get(`/${PATH}/task/:id`, async (req, res) => { 30 | const { params } = req; 31 | const { id } = params; 32 | const task = await microflowService.task.read(id); 33 | const response = await task.data(); 34 | return res.status(200).json(response); 35 | }); 36 | 37 | // Register workflow 38 | app.post(`/${PATH}/workflow`, async (req, res) => { 39 | const { body } = req; 40 | const workflow = await microflowService.workflow.create(body); 41 | const response = await workflow.data(); 42 | return res.status(200).json(response); 43 | }); 44 | 45 | // Query workflow 46 | app.get(`/${PATH}/workflow/:id`, async (req, res) => { 47 | const { params } = req; 48 | const { id } = params; 49 | const workflow = await microflowService.workflow.read(id); 50 | const response = await workflow.data(); 51 | return res.status(200).json(response); 52 | }); 53 | 54 | // Update workflow 55 | app.put(`/${PATH}/workflow`, async (req, res) => { 56 | const { body } = req; 57 | const { id } = body; 58 | const workflow = await microflowService.workflow.update(id, body); 59 | const response = await workflow.data(); 60 | return res.status(200).json(response); 61 | }); 62 | 63 | // Start workflow instance 64 | app.post(`/${PATH}/workflow/:id/start`, async (req, res) => { 65 | const { params, body } = req; 66 | const { id } = params; 67 | const workflow = await microflowService.workflow.read(id); 68 | const execution = await workflow.start(body); 69 | const response = await execution.data(); 70 | return res.status(200).json(response); 71 | }); 72 | 73 | // Send event to workflow instance 74 | app.post(`/${PATH}/workflow/instance/:id/event`, async (req, res) => { 75 | const { params, body } = req; 76 | const { id } = params; 77 | const execution = await microflowService.execution.read(id); 78 | await execution.send(body); 79 | const response = await execution.data(); 80 | return res.status(200).json(response); 81 | }); 82 | 83 | // Send event to workflow instance 84 | app.get(`/${PATH}/task-success`, async (req, res) => { 85 | const { body, query } = req; 86 | const { token } = query; 87 | console.log(token); 88 | const execution = await microflowService.sendTaskSuccess( 89 | token as string, 90 | body 91 | ); 92 | const response = await execution.data(); 93 | return res.status(200).json(response); 94 | }); 95 | 96 | app.get(`/${PATH}/task-failure`, async (req, res) => { 97 | const { body, query } = req; 98 | const { token } = query; 99 | console.log(token); 100 | const execution = await microflowService.sendTaskFailure( 101 | token as string, 102 | body 103 | ); 104 | const response = await execution.data(); 105 | return res.status(200).json(response); 106 | }); 107 | 108 | // Query workflow instance 109 | app.get(`/${PATH}/workflow/instance/:id`, async (req, res) => { 110 | const { id } = req.params; 111 | const execution = await microflowService.execution.read(id); 112 | const response = await execution.data(); 113 | res.status(200).json(response); 114 | }); 115 | 116 | // Healthcheck 117 | app.get(`/${PATH}`, (req, res) => { 118 | res.status(200).json({ message: 'Started' }); 119 | }); 120 | 121 | app.listen(port, () => { 122 | console.log(`endpoints listening at http://localhost:${port}`); 123 | }); 124 | -------------------------------------------------------------------------------- /examples/sample/package-lock.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "test", 3 | "version": "1.0.0", 4 | "lockfileVersion": 1, 5 | "requires": true, 6 | "dependencies": { 7 | "@types/body-parser": { 8 | "version": "1.19.0", 9 | "resolved": "https://registry.npmjs.org/@types/body-parser/-/body-parser-1.19.0.tgz", 10 | "integrity": "sha512-W98JrE0j2K78swW4ukqMleo8R7h/pFETjM2DQ90MF6XK2i4LO4W3gQ71Lt4w3bfm2EvVSyWHplECvB5sK22yFQ==", 11 | "dev": true, 12 | "requires": { 13 | "@types/connect": "*", 14 | "@types/node": "*" 15 | } 16 | }, 17 | "@types/connect": 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24 | "author": "", 25 | "license": "ISC" 26 | } 27 | -------------------------------------------------------------------------------- /img/workflow.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/krn0x2/microflow/769d642ae86755b5d6cb564a81219fe4c57997ec/img/workflow.png -------------------------------------------------------------------------------- /jest.config.js: -------------------------------------------------------------------------------- 1 | module.exports = { 2 | preset: 'ts-jest', 3 | testEnvironment: 'node', 4 | testTimeout: 20000 5 | }; -------------------------------------------------------------------------------- /package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "microflow", 3 | "version": "3.0.0-alpha.8", 4 | "description": "Finite state machine based HTTP microservice orchestration", 5 | "keywords": [ 6 | "workflow", 7 | "state machine", 8 | "orchestration", 9 | "finite state machine", 10 | "step function" 11 | ], 12 | "files": [ 13 | "lib/**/*.js", 14 | "lib/**/*.d.ts" 15 | ], 16 | "main": "lib/microflow.js", 17 | "dependencies": { 18 | "axios": "^0.21.0", 19 | "bluebird": "^3.7.2", 20 | "handlebars": "^4.7.6", 21 | "jsonpath-plus": "^4.0.0", 22 | "jsonwebtoken": "^8.5.1", 23 | "lodash": "^4.17.20", 24 | "nanoid": "^3.1.20", 25 | "xstate": "^4.14.0" 26 | }, 27 | "devDependencies": { 28 | "@types/bluebird": "^3.5.33", 29 | "@types/jest": "^26.0.19", 30 | "@types/jsonwebtoken": "^8.5.0", 31 | "@types/lodash": "^4.14.165", 32 | "@typescript-eslint/eslint-plugin": "^4.8.0", 33 | "@typescript-eslint/parser": "^4.8.0", 34 | "eslint": "^7.13.0", 35 | "jest": "^26.6.3", 36 | "ts-jest": "^26.4.4", 37 | "typescript": "^4.0.5" 38 | }, 39 | "scripts": { 40 | "build": "tsc", 41 | "test": "jest" 42 | }, 43 | "repository": { 44 | "type": "git", 45 | "url": "git+https://github.com/krn0x2/microflow.git" 46 | }, 47 | "author": { 48 | "name": "Karan Chhabra" 49 | }, 50 | "license": "MIT", 51 | "bugs": { 52 | "url": "https://github.com/krn0x2/microflow/issues" 53 | }, 54 | "homepage": "https://github.com/krn0x2/microflow#readme" 55 | } 56 | -------------------------------------------------------------------------------- /src/constants/index.ts: -------------------------------------------------------------------------------- 1 | export const MICROFLOW = { 2 | CONCURRENCY: 20, 3 | STATES: { 4 | TASK: 'task', 5 | TASK_SYNC: 'taskSync', 6 | TASK_MAP_SYNC: 'taskMapSync', 7 | ATOMIC: 'atomic', 8 | FINAL: 'final' 9 | }, 10 | ERRORS: { 11 | WORKFLOW: { 12 | FAILED_TO_FETCH: 'FAILED_TO_FETCH' 13 | } 14 | } 15 | }; 16 | -------------------------------------------------------------------------------- /src/controllers/execution.ts: -------------------------------------------------------------------------------- 1 | import _ from 'lodash'; 2 | import { Promise as BluebirdPromise } from 'bluebird'; 3 | import { State } from 'xstate'; 4 | import { WorkflowInterpreter } from '../interpreter'; 5 | import { IExecution, WorkflowEvent } from '../types'; 6 | import { getMachine } from '../utils/xstate'; 7 | import { EntityController } from '.'; 8 | 9 | export class Execution extends EntityController { 10 | async send(event: WorkflowEvent): Promise { 11 | const { definition, currentJson } = await this.data(); 12 | const fetchMachine = getMachine( 13 | definition, 14 | this.jwt.secretOrPublicKey, 15 | this.jwt.sign 16 | ); 17 | const previousState = State.create(currentJson) as State< 18 | any, 19 | WorkflowEvent 20 | >; 21 | const resolvedState = fetchMachine.resolveState(previousState); 22 | const { nextEvents } = resolvedState; 23 | const { type } = event; 24 | if (resolvedState.done || !_.includes(nextEvents, type)) return this; 25 | 26 | const service = new WorkflowInterpreter(fetchMachine).start(resolvedState); 27 | return new BluebirdPromise((res) => { 28 | service 29 | .onTransition(async (state) => { 30 | if (state.changed !== undefined && _.isEmpty(state.children)) { 31 | await this.update({ 32 | currentJson: state, 33 | state: state.value, 34 | output: state.event.data, 35 | completed: state.done 36 | }); 37 | res(this); 38 | } 39 | }) 40 | .send(event); 41 | }) 42 | .timeout(this.timeout) 43 | .catch(() => { 44 | return this; 45 | }) 46 | .finally(() => service.stop()); 47 | } 48 | } 49 | -------------------------------------------------------------------------------- /src/controllers/index.ts: -------------------------------------------------------------------------------- 1 | import { ICrudable, IModel } from '../crudable'; 2 | import { IJwt, IMicroflowStorage } from '../types'; 3 | 4 | export class EntityController { 5 | constructor( 6 | private model: T, 7 | private store: ICrudable, 8 | protected storage: IMicroflowStorage, 9 | protected jwt: IJwt, 10 | protected timeout: number = 10000 11 | ) { 12 | } 13 | 14 | async data(): Promise { 15 | return this.store.read(this.model.id); 16 | } 17 | 18 | async update(data: Partial>): Promise { 19 | return this.store.update(this.model.id, data); 20 | } 21 | } 22 | -------------------------------------------------------------------------------- /src/controllers/task.ts: -------------------------------------------------------------------------------- 1 | import { EntityController } from '.'; 2 | import { ITask } from '../types'; 3 | 4 | export class Task extends EntityController {} 5 | -------------------------------------------------------------------------------- /src/controllers/workflow.ts: -------------------------------------------------------------------------------- 1 | import { 2 | IExecution, 3 | IJwt, 4 | IMicroflowStorage, 5 | ITask, 6 | IWorkflow 7 | } from '../types'; 8 | import { Execution } from './execution'; 9 | import { transformConfig } from '../utils/convert'; 10 | import { getMachine } from '../utils/xstate'; 11 | import { ICrudable } from '../crudable'; 12 | import { EntityController } from '.'; 13 | import { MicroflowCore } from '../core'; 14 | 15 | export class Workflow extends EntityController { 16 | private getTask: (id: string) => Promise; 17 | private execution: MicroflowCore; 18 | 19 | constructor( 20 | model: IWorkflow, 21 | store: ICrudable, 22 | storage: IMicroflowStorage, 23 | jwt: IJwt, 24 | timeout: number, 25 | ) { 26 | super(model, store, storage, jwt); 27 | this.getTask = storage.task.read.bind(storage.task); 28 | this.execution = new MicroflowCore( 29 | Execution, 30 | storage.execution, 31 | storage, 32 | this.jwt, 33 | timeout, 34 | ); 35 | this.execution.create = this.execution.create.bind(this.execution); 36 | this.execution.update = this.execution.update.bind(this.execution); 37 | } 38 | 39 | async start( 40 | data: Record = {}, 41 | name?: string 42 | ): Promise { 43 | const { config } = await this.data(); 44 | const definition = await transformConfig(config, this.getTask); 45 | const workflowMachine = getMachine( 46 | definition, 47 | this.jwt.secretOrPublicKey, 48 | this.jwt.sign 49 | ); 50 | const { initialState } = workflowMachine; 51 | const execution = await this.execution.create({ 52 | name, 53 | config, 54 | definition, 55 | state: initialState.value, 56 | completed: initialState.done 57 | }); 58 | const { id: executionId } = await execution.data(); 59 | const { initialState: currentJson } = workflowMachine.withContext({ 60 | wfid: executionId, 61 | name 62 | }); 63 | await this.execution.update(executionId, { 64 | currentJson 65 | }); 66 | return execution.send({ type: 'data', data }); 67 | } 68 | } 69 | -------------------------------------------------------------------------------- /src/core.ts: -------------------------------------------------------------------------------- 1 | import { ICrudable, IModel } from './crudable'; 2 | import { IJwt, IMicroflowStorage } from './types'; 3 | 4 | interface EntityConstructor { 5 | new (model: T, store: ICrudable, storage: IMicroflowStorage, jwt: IJwt, timeout: number): U; 6 | } 7 | 8 | export class MicroflowCore { 9 | constructor( 10 | private ctor: EntityConstructor, 11 | private store: ICrudable, 12 | private storage?: IMicroflowStorage, 13 | private jwt?: IJwt, 14 | private timeout?: number, 15 | ) { 16 | } 17 | 18 | async create(data: Omit & { id?: T['id'] }): Promise { 19 | const model = await this.store.create(data); 20 | return new this.ctor(model, this.store, this.storage, this.jwt, this.timeout); 21 | } 22 | 23 | async read(id: T['id']): Promise { 24 | const model = await this.store.read(id); 25 | return new this.ctor(model, this.store, this.storage, this.jwt, this.timeout); 26 | } 27 | 28 | async update(id: T['id'], data: Partial>): Promise { 29 | const model = await this.store.update(id, data); 30 | return new this.ctor(model, this.store, this.storage, this.jwt, this.timeout); 31 | } 32 | 33 | async delete(id: T['id']): Promise { 34 | return this.store.delete(id); 35 | } 36 | } 37 | -------------------------------------------------------------------------------- /src/crudable.ts: -------------------------------------------------------------------------------- 1 | export interface IModel { 2 | id: string; 3 | } 4 | 5 | export interface ICrudable { 6 | create(data: Omit & { id?: T['id'] }): Promise; 7 | read(id: T['id']): Promise; 8 | update(id: T['id'], data: Partial>): Promise; 9 | delete(id: T['id']): Promise; 10 | } 11 | 12 | export class Crudable implements ICrudable { 13 | create(data: Omit & { id?: T['id'] }): Promise { 14 | throw new Error('Method not implemented.'); 15 | } 16 | read(id: T['id']): Promise { 17 | throw new Error('Method not implemented.'); 18 | } 19 | update(id: T['id'], data: Partial>): Promise { 20 | throw new Error('Method not implemented.'); 21 | } 22 | delete(id: T['id']): Promise { 23 | throw new Error('Method not implemented.'); 24 | } 25 | } 26 | -------------------------------------------------------------------------------- /src/interpreter/index.ts: -------------------------------------------------------------------------------- 1 | import { 2 | Interpreter, 3 | StateSchema, 4 | EventData, 5 | Typestate, 6 | State, 7 | InterpreterOptions, 8 | StateMachine, 9 | SCXML 10 | } from 'xstate'; 11 | import _ from 'lodash'; 12 | import { transform, setOnPath } from '../utils'; 13 | import { WorkflowEvent } from '../types'; 14 | 15 | export class WorkflowInterpreter extends Interpreter< 16 | any, 17 | StateSchema, 18 | WorkflowEvent, 19 | Typestate 20 | > { 21 | oldSend: any; 22 | constructor( 23 | machine: StateMachine>, 24 | options?: Partial 25 | ) { 26 | super(machine, options); 27 | this.oldSend = this.send.bind(this); 28 | this.send = ( 29 | event: WorkflowEvent | SCXML.Event, 30 | payload?: EventData 31 | ): State> => { 32 | const isSCXML = _.get(event, '$$type') === 'scxml'; 33 | const data = isSCXML 34 | ? _.get(event, 'data.data', {}) 35 | : _.get(event, 'data', {}); 36 | const lastEventData = _.get(this.state.event, 'data', {}); 37 | const isMapNode = _.get( 38 | this.state, 39 | 'activities.task.activity.src.isMap', 40 | false 41 | ); 42 | const { context: ctx } = this.state; 43 | const { transitions } = this.machine.transition(this.state, event); 44 | const transition = _.head(transitions); 45 | const resultSelector = _.get(transition, 'resultSelector'); 46 | const resultPath = _.get(transition, 'resultPath'); 47 | const resultSelected = isMapNode 48 | ? data.map((value, index) => 49 | transform( 50 | resultSelector, 51 | { 52 | _: data, 53 | _task: { 54 | executionId: ctx.wfid, 55 | name: ctx.name, 56 | item: { value, index } 57 | }, 58 | _env: process.env 59 | }, 60 | value 61 | ) 62 | ) 63 | : transform(resultSelector, { 64 | _: data, 65 | _env: process.env 66 | }); 67 | const result = setOnPath(lastEventData, resultPath, resultSelected); 68 | _.set(event, isSCXML ? 'data.data' : 'data', result); 69 | return this.oldSend(event, payload); 70 | }; 71 | } 72 | } 73 | -------------------------------------------------------------------------------- /src/localCrud.ts: -------------------------------------------------------------------------------- 1 | import { nanoid } from 'nanoid'; 2 | import { ICrudable, IModel } from './crudable'; 3 | 4 | export class LocalCrud implements ICrudable { 5 | store: Map; 6 | 7 | constructor(map: Map) { 8 | this.store = map; 9 | } 10 | 11 | async create(data: Omit & { id?: T['id'] }): Promise { 12 | const id = data.id || nanoid(); 13 | this.store.set(id, { id, ...data } as T); 14 | return this.store.get(id); 15 | } 16 | 17 | async read(id: T['id']): Promise { 18 | if (!this.store.has(id)) throw new Error(`Item with id = ${id} not found`); 19 | return this.store.get(id); 20 | } 21 | 22 | async update(id: T['id'], data: Partial>): Promise { 23 | if (!this.store.has(id)) throw new Error(`Item with id = ${id} not found`); 24 | this.store.set(id, { ...this.store.get(id), ...data }); 25 | return this.store.get(id); 26 | } 27 | 28 | async delete(id: T['id']): Promise { 29 | if (!this.store.has(id)) throw new Error(`Item with id = ${id} not found`); 30 | this.store.delete(id); 31 | return id; 32 | } 33 | } 34 | -------------------------------------------------------------------------------- /src/microflow.ts: -------------------------------------------------------------------------------- 1 | import jwt from 'jsonwebtoken'; 2 | import { DefaultStorage } from './storage'; 3 | import { Task } from './controllers/task'; 4 | import { Workflow } from './controllers/workflow'; 5 | import { Execution } from './controllers/execution'; 6 | import { 7 | IMicroflowStorage, 8 | IMicroflowConfig, 9 | TaskTokenClaims, 10 | IWorkflow, 11 | ITask, 12 | IExecution 13 | } from './types'; 14 | import { MicroflowCore } from './core'; 15 | 16 | export class Microflow { 17 | private secret: jwt.Secret; 18 | private signOptions: jwt.SignOptions; 19 | private verifyOptions: jwt.VerifyOptions; 20 | 21 | public storage: IMicroflowStorage; 22 | 23 | public workflow: MicroflowCore; 24 | public task: MicroflowCore; 25 | public execution: MicroflowCore; 26 | 27 | constructor(config: IMicroflowConfig) { 28 | const { storage, jwt, timeout } = config; 29 | const { secretOrPublicKey, sign, verify } = jwt; 30 | this.secret = secretOrPublicKey; 31 | this.signOptions = sign; 32 | this.verifyOptions = verify; 33 | if (!storage) { 34 | this.storage = new DefaultStorage(); 35 | } else { 36 | this.storage = storage; 37 | } 38 | this.workflow = new MicroflowCore( 39 | Workflow, 40 | this.storage.workflow, 41 | this.storage, 42 | { secretOrPublicKey: this.secret, sign: this.signOptions }, 43 | timeout 44 | ); 45 | this.task = new MicroflowCore(Task, this.storage.task); 46 | this.execution = new MicroflowCore( 47 | Execution, 48 | this.storage.execution, 49 | this.storage, 50 | { secretOrPublicKey: this.secret, sign: this.signOptions }, 51 | timeout, 52 | ); 53 | } 54 | 55 | private claimsFromTaskToken(token): TaskTokenClaims { 56 | return jwt.verify( 57 | token, 58 | this.secret, 59 | this.verifyOptions 60 | ) as TaskTokenClaims; 61 | } 62 | 63 | async sendTaskSuccess( 64 | token: string, 65 | data: Record 66 | ): Promise { 67 | try { 68 | const { taskEventSuffix, workflowInstanceId } = this.claimsFromTaskToken( 69 | token 70 | ); 71 | const execution = await this.execution.read(workflowInstanceId); 72 | return execution.send({ 73 | type: `success-${taskEventSuffix}`, 74 | data 75 | }); 76 | } catch (ex) { 77 | throw { 78 | message: 'Task token invalid' 79 | }; 80 | } 81 | } 82 | 83 | async sendTaskFailure( 84 | token: string, 85 | data: Record 86 | ): Promise { 87 | try { 88 | const { taskEventSuffix, workflowInstanceId } = this.claimsFromTaskToken( 89 | token 90 | ); 91 | const execution = await this.execution.read(workflowInstanceId); 92 | return execution.send({ 93 | type: `failure-${taskEventSuffix}`, 94 | data 95 | }); 96 | } catch (ex) { 97 | throw { 98 | message: 'Task token invalid' 99 | }; 100 | } 101 | } 102 | } 103 | -------------------------------------------------------------------------------- /src/storage/index.ts: -------------------------------------------------------------------------------- 1 | import { ICrudable } from '../crudable'; 2 | import { LocalCrud } from '../localCrud'; 3 | import { ITask, IWorkflow, IExecution, IMicroflowStorage } from '../types'; 4 | 5 | export class DefaultStorage implements IMicroflowStorage { 6 | private memory = { 7 | workflows: new Map(), 8 | tasks: new Map(), 9 | executions: new Map() 10 | }; 11 | workflow: ICrudable; 12 | task: ICrudable; 13 | execution: ICrudable; 14 | 15 | constructor() { 16 | this.workflow = new LocalCrud(this.memory.workflows); 17 | this.task = new LocalCrud(this.memory.tasks); 18 | this.execution = new LocalCrud(this.memory.executions); 19 | } 20 | } 21 | -------------------------------------------------------------------------------- /src/types.ts: -------------------------------------------------------------------------------- 1 | import jwt from 'jsonwebtoken'; 2 | import { 3 | EventObject, 4 | MachineConfig, 5 | State, 6 | StateSchema, 7 | StateValue, 8 | Typestate 9 | } from 'xstate'; 10 | import { ICrudable, IModel } from './crudable'; 11 | 12 | export class Error { 13 | code: number; 14 | message: string; 15 | constructor(code: number, message: string) { 16 | this.code = code; 17 | this.message = message; 18 | } 19 | } 20 | 21 | export type SingleOrArray = T[] | T; 22 | 23 | export type ITransform = 24 | | SingleOrArray 25 | | SingleOrArray 26 | | SingleOrArray>; 27 | 28 | export interface IMicroflowConfig { 29 | storage?: IMicroflowStorage; 30 | timeout?: number; 31 | jwt: IJwt; 32 | } 33 | 34 | export interface IJwt { 35 | secretOrPublicKey: jwt.Secret; 36 | sign?: jwt.SignOptions; 37 | verify?: jwt.VerifyOptions; 38 | } 39 | 40 | export interface IWorkflow extends IModel { 41 | config: MicroflowDefinition; 42 | } 43 | 44 | export interface ITask extends IModel { 45 | type: 'http' | 'other'; 46 | config: any; 47 | } 48 | 49 | export interface IExecution extends IModel { 50 | name?: string; 51 | config: MicroflowDefinition; 52 | definition: MachineConfig; 53 | currentJson?: State, Typestate>; 54 | state: StateValue; 55 | output?: Record; 56 | completed: boolean; 57 | } 58 | 59 | export interface WorkflowInput { 60 | id: string; 61 | config: MicroflowDefinition; 62 | } 63 | 64 | export interface TaskInput { 65 | id: string; 66 | type: 'http' | 'other'; 67 | config: any; 68 | } 69 | 70 | export interface WorkflowInstanceInput { 71 | definition: any; 72 | currentJson: any; 73 | } 74 | 75 | export interface WorkflowEvent extends EventObject { 76 | data?: Record; 77 | } 78 | 79 | export interface TaskTokenClaims { 80 | workflowInstanceId: string; 81 | taskEventSuffix: string; 82 | } 83 | 84 | export type SendEventError = { 85 | message: string; 86 | }; 87 | 88 | export type SendEventSuccess = { 89 | currentState: StateValue; 90 | completed: boolean; 91 | nextEvents: string[]; 92 | }; 93 | 94 | export type StartWorkflowResponse = { 95 | id: string; 96 | }; 97 | 98 | export type SendEventResponse = SendEventSuccess; 99 | 100 | export type MicroflowStateTypes = 101 | | 'task' 102 | | 'taskSync' 103 | | 'taskMapSync' 104 | | 'pass' 105 | | 'atomic' 106 | | 'final'; 107 | 108 | export interface TransitionConfig { 109 | target: string; 110 | meta?: Record; 111 | resultSelector?: Record; 112 | resultPath?: string; 113 | } 114 | 115 | export interface StateNodeConfig { 116 | type: MicroflowStateTypes; 117 | meta?: Record; 118 | on?: Record; 119 | } 120 | 121 | export interface AtomicNodeConfig extends StateNodeConfig { 122 | type: 'atomic'; 123 | } 124 | 125 | export interface FinalNodeConfig { 126 | type: 'final'; 127 | meta?: Record; 128 | } 129 | 130 | export interface PassNodeConfig extends StateNodeConfig { 131 | type: 'pass'; 132 | onDone?: TransitionConfig; 133 | onError?: TransitionConfig; 134 | } 135 | 136 | export interface TaskNodeConfig extends StateNodeConfig { 137 | type: 'task'; 138 | taskId: string; 139 | parameters?: Record; 140 | onDone?: TransitionConfig; 141 | onError?: TransitionConfig; 142 | } 143 | 144 | export interface TaskNodeSyncConfig extends StateNodeConfig { 145 | type: 'taskSync'; 146 | taskId: string; 147 | parameters?: Record; 148 | onDone?: TransitionConfig; 149 | onError?: TransitionConfig; 150 | } 151 | 152 | export interface TaskMapNodeSyncConfig extends StateNodeConfig { 153 | type: 'taskMapSync'; 154 | taskId: string; 155 | itemsPath: string; 156 | parameters?: Record; 157 | onDone?: TransitionConfig; 158 | onError?: TransitionConfig; 159 | } 160 | 161 | export type TMicroflowNode = 162 | | TaskNodeConfig 163 | | TaskNodeSyncConfig 164 | | TaskMapNodeSyncConfig 165 | | PassNodeConfig 166 | | AtomicNodeConfig 167 | | FinalNodeConfig; 168 | 169 | export interface MicroflowDefinition { 170 | initial: string; 171 | meta?: Record; 172 | states: Record; 173 | context?: Record; 174 | } 175 | 176 | export interface IMicroflowStorage { 177 | workflow: ICrudable; 178 | task: ICrudable; 179 | execution: ICrudable; 180 | } 181 | -------------------------------------------------------------------------------- /src/utils/convert.ts: -------------------------------------------------------------------------------- 1 | import _ from 'lodash'; 2 | import { map } from 'bluebird'; 3 | import { MachineConfig, StateNodeConfig as XStateNodeConfig } from 'xstate'; 4 | 5 | import { 6 | AtomicNodeConfig, 7 | FinalNodeConfig, 8 | ITask, 9 | MicroflowDefinition, 10 | TaskNodeConfig, 11 | WorkflowEvent, 12 | TransitionConfig, 13 | TaskNodeSyncConfig, 14 | TMicroflowNode, 15 | TaskMapNodeSyncConfig, 16 | PassNodeConfig 17 | } from '../types'; 18 | import { MICROFLOW } from '../constants'; 19 | import { nanoid } from 'nanoid'; 20 | 21 | export async function transformConfig( 22 | config: MicroflowDefinition, 23 | getTask: (id: string) => Promise 24 | ): Promise> { 25 | const states = _.get(config, 'states', {}); 26 | const uniqueTaskIds = _.chain(states) 27 | .mapValues() 28 | .filter((s) => { 29 | const type = _.get(s, 'type'); 30 | return ( 31 | type === MICROFLOW.STATES.TASK || 32 | type === MICROFLOW.STATES.TASK_SYNC || 33 | type === MICROFLOW.STATES.TASK_MAP_SYNC 34 | ); 35 | }) 36 | .map('taskId') 37 | .uniq() 38 | .value(); 39 | const tasks = await map(uniqueTaskIds, getTask, { 40 | concurrency: MICROFLOW.CONCURRENCY 41 | }); 42 | const taskMap = _.keyBy(tasks, 'id'); 43 | return microflowToXstateConfig(config, taskMap); 44 | } 45 | 46 | export function microflowToXstateConfig( 47 | microflowConfig: MicroflowDefinition, 48 | taskDictionary: _.Dictionary 49 | ): MachineConfig { 50 | const { states } = microflowConfig; 51 | const newStates = _.mapValues(states, (s: TMicroflowNode, name) => { 52 | if (s.type === 'task') 53 | return microflowTaskToXstateNode(s, taskDictionary[s.taskId], name); 54 | else if (s.type === 'taskSync') 55 | return microflowTaskSyncToXstateNode(s, taskDictionary[s.taskId]); 56 | else if (s.type === 'taskMapSync') 57 | return microflowTaskMapSyncToXstateNode(s, taskDictionary[s.taskId]); 58 | else if (s.type === 'atomic') return microflowAtomicToXstateNode(s); 59 | else if (s.type === 'pass') return microflowPassToXstateNode(s); 60 | else return microflowFinalToXstateNode(s); 61 | }) as Record>; 62 | 63 | const initialNodeName = nanoid(); 64 | return { 65 | id: 'main', 66 | initial: initialNodeName, 67 | meta: microflowConfig.meta, 68 | states: { 69 | [initialNodeName]: { 70 | on: { 71 | data: { 72 | target: microflowConfig.initial, 73 | resultPath: '$' 74 | } as TransitionConfig 75 | } 76 | }, 77 | ...newStates 78 | } 79 | }; 80 | } 81 | 82 | export function microflowTaskToXstateNode( 83 | s: TaskNodeConfig, 84 | task: ITask, 85 | name?: string 86 | ): XStateNodeConfig { 87 | // const taskEventSuffix = nanoid(); 88 | const taskEventSuffix = name; 89 | return { 90 | type: 'compound', 91 | initial: 'starting', 92 | meta: s.meta, 93 | states: { 94 | starting: { 95 | invoke: { 96 | src: { 97 | type: s.type, 98 | taskId: s.taskId, 99 | task, 100 | parameters: s.parameters, 101 | taskEventSuffix 102 | }, 103 | onDone: { 104 | target: 'started' 105 | }, 106 | onError: { 107 | target: 'failed_to_start', 108 | resultPath: `$.errors.${taskEventSuffix}` 109 | } as TransitionConfig 110 | } 111 | }, 112 | started: { 113 | on: { 114 | [`success-${taskEventSuffix}`]: { 115 | ...s.onDone, 116 | target: '#main.' + s.onDone.target 117 | }, 118 | [`failure-${taskEventSuffix}`]: { 119 | ...s.onError, 120 | target: '#main.' + s.onError.target 121 | } 122 | } 123 | }, 124 | failed_to_start: {} 125 | }, 126 | on: s.on 127 | }; 128 | } 129 | 130 | export function microflowTaskSyncToXstateNode( 131 | s: TaskNodeSyncConfig, 132 | task: ITask 133 | ): XStateNodeConfig { 134 | return { 135 | type: 'atomic', 136 | meta: s.meta, 137 | invoke: { 138 | src: { 139 | type: 'task', 140 | taskId: s.taskId, 141 | task, 142 | parameters: s.parameters 143 | }, 144 | onDone: s.onDone, 145 | onError: s.onError 146 | }, 147 | on: s.on 148 | }; 149 | } 150 | 151 | export function microflowTaskMapSyncToXstateNode( 152 | s: TaskMapNodeSyncConfig, 153 | task: ITask 154 | ): XStateNodeConfig { 155 | return { 156 | type: 'atomic', 157 | meta: s.meta, 158 | invoke: { 159 | src: { 160 | type: 'task', 161 | taskId: s.taskId, 162 | task, 163 | isMap: true, 164 | itemsPath: s.itemsPath ? s.itemsPath : '$', 165 | parameters: s.parameters 166 | }, 167 | onDone: s.onDone, 168 | onError: s.onError 169 | }, 170 | on: s.on 171 | }; 172 | } 173 | 174 | export function microflowAtomicToXstateNode( 175 | s: AtomicNodeConfig 176 | ): XStateNodeConfig { 177 | return { 178 | type: 'atomic', 179 | meta: s.meta, 180 | on: s.on 181 | }; 182 | } 183 | 184 | export function microflowPassToXstateNode( 185 | s: PassNodeConfig 186 | ): XStateNodeConfig { 187 | return { 188 | type: 'atomic', 189 | meta: s.meta, 190 | invoke: { 191 | src: { 192 | type: 'transform' 193 | }, 194 | onDone: s.onDone, 195 | onError: s.onError 196 | } 197 | }; 198 | } 199 | 200 | export function microflowFinalToXstateNode( 201 | s: FinalNodeConfig 202 | ): XStateNodeConfig { 203 | return { 204 | type: 'final', 205 | meta: s.meta 206 | }; 207 | } 208 | -------------------------------------------------------------------------------- /src/utils/index.ts: -------------------------------------------------------------------------------- 1 | import { JSONPath } from 'jsonpath-plus'; 2 | import * as _ from 'lodash'; 3 | import * as handlebars from 'handlebars'; 4 | import { ITransform } from '../types'; 5 | 6 | handlebars.registerHelper('json', function(context) { 7 | return JSON.stringify(context); 8 | }); 9 | 10 | const transform = >( 11 | obj: T, 12 | root: Record = {}, 13 | def: Record = root._, 14 | original = true 15 | ): T => { 16 | if (_.isString(obj)) { 17 | if (_.startsWith(obj, '$.') || obj === '$') 18 | return JSONPath({ path: obj, json: root, wrap: false }); 19 | return handlebars.compile(obj)(root) as T; 20 | } else if (_.isArray(obj)) { 21 | return _.map(obj, (x) => transform(x, root, def, false)) as T; 22 | } else if (_.isObject(obj)) { 23 | return _.mapValues(obj, (x) => transform(x, root, def, false)) as T; 24 | } else if (_.isUndefined(obj)) { 25 | if (original) return def as T; 26 | else return undefined; 27 | } else { 28 | return obj; 29 | } 30 | }; 31 | 32 | const setOnPath = ( 33 | root: Record, 34 | path: string, 35 | obj: Record 36 | ): Record => { 37 | if (path === '$') return obj; 38 | if (path === undefined) return root; 39 | const lodashPath = _.trimStart(path, '$.'); 40 | return _.set(_.clone(root), lodashPath, obj); 41 | }; 42 | 43 | export { transform, setOnPath }; 44 | -------------------------------------------------------------------------------- /src/utils/task.ts: -------------------------------------------------------------------------------- 1 | import axios from 'axios'; 2 | import bluebird from 'bluebird'; 3 | import { JSONPath } from 'jsonpath-plus'; 4 | import jwt from 'jsonwebtoken'; 5 | import { InvokeCreator } from 'xstate'; 6 | import { transform } from './index'; 7 | 8 | export const taskCreator = ( 9 | secret: jwt.Secret, 10 | signOptions: jwt.SignOptions 11 | ): InvokeCreator => async ( 12 | ctx: Record, 13 | { data }, 14 | { src } 15 | ) => { 16 | const { taskEventSuffix, task, parameters, itemsPath, isMap } = src; 17 | const token = jwt.sign( 18 | { workflowInstanceId: ctx.wfid, taskEventSuffix }, 19 | secret, 20 | signOptions 21 | ); 22 | const dataInputs = isMap 23 | ? JSONPath({ 24 | path: itemsPath, 25 | json: data 26 | })[0] || [] 27 | : [data]; 28 | const response = await bluebird.map(dataInputs, async (value, index) => { 29 | const enrichedParameters = transform(parameters, { 30 | _: data, 31 | _task: { 32 | executionId: ctx.wfid, 33 | name: ctx.name, 34 | token, 35 | item: { value, index } 36 | }, 37 | _env: process.env 38 | }); 39 | const taskResolved = transform(task.config, enrichedParameters); 40 | const res = await axios.request(taskResolved); 41 | return res.data; 42 | }); 43 | return isMap ? response : response[0]; 44 | }; 45 | 46 | export const transformerInvoke: InvokeCreator = async ( 47 | _ctx: Record, 48 | { data } 49 | ) => { 50 | return data; 51 | }; 52 | -------------------------------------------------------------------------------- /src/utils/xstate.ts: -------------------------------------------------------------------------------- 1 | import jwt from 'jsonwebtoken'; 2 | import { 3 | AnyEventObject, 4 | Machine, 5 | MachineConfig, 6 | StateMachine, 7 | Typestate 8 | } from 'xstate'; 9 | import { WorkflowEvent } from '../types'; 10 | import { taskCreator, transformerInvoke } from './task'; 11 | 12 | export function getMachine( 13 | config: MachineConfig, 14 | secret: jwt.Secret, 15 | signOptions: jwt.SignOptions 16 | ): StateMachine> { 17 | return Machine(config, { 18 | services: { 19 | task: taskCreator(secret, signOptions), 20 | transform: transformerInvoke 21 | } 22 | }); 23 | } 24 | -------------------------------------------------------------------------------- /tests/atomicNodeInitial.test.ts: -------------------------------------------------------------------------------- 1 | import axios from 'axios'; 2 | jest.mock('axios'); 3 | const mockedAxios = axios as jest.Mocked; 4 | mockedAxios.request.mockResolvedValue({}); 5 | import { Microflow } from '../src/microflow'; 6 | 7 | const flow = new Microflow({ 8 | jwt: { 9 | secretOrPublicKey: 'shhhhh', 10 | sign: { 11 | expiresIn: '24h' 12 | } 13 | } 14 | }); 15 | 16 | test('test transitions', async () => { 17 | const task = await flow.task.create({ 18 | id: 'airflow', 19 | type: 'http', 20 | config: { 21 | url: 'http://localhost:1000/api/experimental/dags/{{dagId}}/dag_runs', 22 | headers: { 23 | 'Cache-Control': 'no-cache', 24 | 'Content-Type': 'application/json' 25 | }, 26 | data: { 27 | conf: { 28 | actualData: '$.data', 29 | token: '$.token', 30 | envKey: '$.envKey', 31 | executionId: '$.executionId' 32 | } 33 | }, 34 | method: 'post' 35 | } 36 | }); 37 | 38 | const { id: taskId } = await task.data(); 39 | 40 | const workflow = await flow.workflow.create({ 41 | id: 'sample', 42 | config: { 43 | initial: 'waiting', 44 | states: { 45 | waiting: { 46 | type: 'atomic', 47 | on: { 48 | start_test: { 49 | target: 'auto_test_1', 50 | resultPath: '$.trial' 51 | } 52 | } 53 | }, 54 | auto_test_1: { 55 | type: 'task', 56 | taskId, 57 | parameters: { 58 | dagId: 'dag1', 59 | data: '$._', 60 | token: '$._task.token', 61 | envKey: '$._env.myKey1', 62 | executionId: '$._task.executionId' 63 | }, 64 | onDone: { 65 | target: 'ready_for_approval', 66 | resultSelector: { 67 | a: 'a', 68 | b: 'b', 69 | out: '$._' 70 | }, 71 | resultPath: '$.pipeline1.success' 72 | }, 73 | onError: { 74 | target: 'failed', 75 | resultSelector: { 76 | c: 'c', 77 | d: 'd', 78 | out: '$._' 79 | }, 80 | resultPath: '$.pipeline1.error' 81 | } 82 | }, 83 | ready_for_approval: { 84 | type: 'atomic', 85 | on: { 86 | reject: { 87 | target: 'failed', 88 | resultPath: '$.reject.data' 89 | }, 90 | approve: { 91 | target: 'auto_test_2', 92 | resultPath: '$.approval.data' 93 | } 94 | } 95 | }, 96 | auto_test_2: { 97 | type: 'task', 98 | taskId, 99 | parameters: { 100 | dagId: 'dag2', 101 | data: 'karan', 102 | token: '$._task.token', 103 | envKey: '$._env.myKey2', 104 | executionId: '$._task.executionId' 105 | }, 106 | onDone: { 107 | target: 'done', 108 | resultSelector: { 109 | e: 'e', 110 | out: '$._' 111 | }, 112 | resultPath: '$.pipeline2.success' 113 | }, 114 | onError: { 115 | target: 'failed', 116 | resultSelector: { 117 | f: 'f', 118 | out: '$._' 119 | }, 120 | resultPath: '$.pipeline2.error' 121 | } 122 | }, 123 | done: { 124 | type: 'final' 125 | }, 126 | failed: { 127 | type: 'final' 128 | } 129 | } 130 | } 131 | }); 132 | 133 | const execution = await workflow.start({ 134 | input1: 'karan', 135 | input2: 'chhabra' 136 | }); 137 | 138 | await execution.send({ 139 | type: 'start_test', 140 | data: { a: 1, b: 2 } 141 | }); 142 | 143 | await execution.send({ 144 | type: 'success-auto_test_1', 145 | data: { 146 | ok: 'cupid' 147 | } 148 | }); 149 | 150 | await execution.send({ 151 | type: 'approve', 152 | data: { 153 | notok: 'cupido' 154 | } 155 | }); 156 | 157 | await execution.send({ 158 | type: 'success-auto_test_2', 159 | data: { 160 | c: 'wee' 161 | } 162 | }); 163 | 164 | const { completed, output } = await execution.data(); 165 | expect(completed).toBe(true); 166 | expect(output).toMatchObject({ 167 | input1: 'karan', 168 | input2: 'chhabra', 169 | trial: { a: 1, b: 2 }, 170 | pipeline1: { 171 | success: { 172 | a: 'a', 173 | b: 'b', 174 | out: { 175 | ok: 'cupid' 176 | } 177 | } 178 | }, 179 | approval: { 180 | data: { 181 | notok: 'cupido' 182 | } 183 | }, 184 | pipeline2: { 185 | success: { 186 | e: 'e', 187 | out: { 188 | c: 'wee' 189 | } 190 | } 191 | } 192 | }); 193 | }); 194 | -------------------------------------------------------------------------------- /tests/taskMapSyncNode.test.ts: -------------------------------------------------------------------------------- 1 | import axios from 'axios'; 2 | jest.mock('axios'); 3 | const mockedAxios = axios as jest.Mocked; 4 | mockedAxios.request.mockResolvedValue({}); 5 | import { Microflow } from '../src/microflow'; 6 | 7 | const flow = new Microflow({ 8 | jwt: { 9 | secretOrPublicKey: 'shhhhh', 10 | sign: { 11 | expiresIn: '24h' 12 | } 13 | } 14 | }); 15 | 16 | test('test transitions', async () => { 17 | const task = await flow.task.create({ 18 | id: 'airflow', 19 | type: 'http', 20 | config: { 21 | url: 'http://localhost:1000/api/experimental/dags/{{dagId}}/dag_runs', 22 | headers: { 23 | 'Cache-Control': 'no-cache', 24 | 'Content-Type': 'application/json' 25 | }, 26 | data: { 27 | conf: { 28 | actualData: '$.data', 29 | token: '$.token', 30 | envKey: '$.envKey', 31 | executionId: '$.executionId' 32 | } 33 | }, 34 | method: 'post' 35 | } 36 | }); 37 | 38 | const { id: taskId } = await task.data(); 39 | 40 | // Create a workflow 41 | const workflow = await flow.workflow.create({ 42 | id: 'sample', 43 | config: { 44 | initial: 'auto_test_1', 45 | states: { 46 | auto_test_1: { 47 | type: 'taskMapSync', 48 | taskId, 49 | itemsPath: '$.iterateOn', 50 | parameters: { 51 | dagId: 'dag1', 52 | data: '$._', 53 | token: '$._task.token', 54 | envKey: '$._env.myKey1', 55 | executionId: '$._task.executionId' 56 | }, 57 | onDone: { 58 | target: 'ready_for_approval', 59 | resultSelector: { 60 | a: 'a', 61 | b: 'b', 62 | out: '$._' 63 | }, 64 | resultPath: '$.pipeline1.success' 65 | }, 66 | onError: { 67 | target: 'failed', 68 | resultSelector: { 69 | c: 'c', 70 | d: 'd', 71 | out: '$._' 72 | }, 73 | resultPath: '$.pipeline1.error' 74 | } 75 | }, 76 | ready_for_approval: { 77 | type: 'atomic', 78 | on: { 79 | reject: { 80 | target: 'failed', 81 | resultPath: '$.reject.data' 82 | }, 83 | approve: { 84 | target: 'auto_test_2', 85 | resultPath: '$.approval.data' 86 | } 87 | } 88 | }, 89 | auto_test_2: { 90 | type: 'taskSync', 91 | taskId, 92 | parameters: { 93 | dagId: 'dag2', 94 | data: '$._', 95 | token: '$._task.token', 96 | envKey: '$._env.myKey1', 97 | executionId: '$._task.executionId' 98 | }, 99 | onDone: { 100 | target: 'done', 101 | resultSelector: { 102 | e: 'e', 103 | out: '$._' 104 | }, 105 | resultPath: '$.pipeline2.success' 106 | }, 107 | onError: { 108 | target: 'failed', 109 | resultSelector: { 110 | f: 'f', 111 | out: '$._' 112 | }, 113 | resultPath: '$.pipeline2.error' 114 | } 115 | }, 116 | done: { 117 | type: 'final' 118 | }, 119 | failed: { 120 | type: 'final' 121 | } 122 | } 123 | } 124 | }); 125 | 126 | // start an execution with initial data 127 | const execution = await workflow.start({ 128 | input1: 'val1', 129 | input2: 'val2', 130 | iterateOn: [1, 2, 3] 131 | }); 132 | 133 | await execution.send({ 134 | type: 'approve', 135 | data: { 136 | message: 'The acceptance test was fine' 137 | } 138 | }); 139 | 140 | const { completed, output } = await execution.data(); 141 | expect(completed).toBe(true); 142 | expect(output).toMatchObject({ 143 | input1: 'val1', 144 | input2: 'val2', 145 | pipeline1: { 146 | success: [ 147 | { 148 | a: 'a', 149 | b: 'b', 150 | out: {} 151 | }, 152 | { 153 | a: 'a', 154 | b: 'b', 155 | out: {} 156 | }, 157 | { 158 | a: 'a', 159 | b: 'b', 160 | out: {} 161 | } 162 | ] 163 | }, 164 | approval: { data: { message: 'The acceptance test was fine' } }, 165 | pipeline2: { 166 | success: { 167 | e: 'e', 168 | out: {} 169 | } 170 | } 171 | }); 172 | }); 173 | -------------------------------------------------------------------------------- /tests/taskNodeInitial.test.ts: -------------------------------------------------------------------------------- 1 | import axios from 'axios'; 2 | jest.mock('axios'); 3 | const mockedAxios = axios as jest.Mocked; 4 | mockedAxios.request.mockResolvedValue({}); 5 | import { Microflow } from '../src/microflow'; 6 | 7 | const flow = new Microflow({ 8 | jwt: { 9 | secretOrPublicKey: 'shhhhh', 10 | sign: { 11 | expiresIn: '24h' 12 | } 13 | } 14 | }); 15 | 16 | test('test transitions', async () => { 17 | const task = await flow.task.create({ 18 | id: 'airflow', 19 | type: 'http', 20 | config: { 21 | url: 'http://localhost:1000/api/experimental/dags/{{dagId}}/dag_runs', 22 | headers: { 23 | 'Cache-Control': 'no-cache', 24 | 'Content-Type': 'application/json' 25 | }, 26 | data: { 27 | conf: { 28 | actualData: '$.data', 29 | token: '$.token', 30 | envKey: '$.envKey', 31 | executionId: '$.executionId' 32 | } 33 | }, 34 | method: 'post' 35 | } 36 | }); 37 | 38 | const { id: taskId } = await task.data(); 39 | 40 | // Create a workflow 41 | const workflow = await flow.workflow.create({ 42 | id: 'sample', 43 | config: { 44 | initial: 'auto_test_1', 45 | states: { 46 | auto_test_1: { 47 | type: 'task', 48 | taskId, 49 | parameters: { 50 | dagId: 'dag1', 51 | data: '$._', 52 | token: '$._task.token', 53 | envKey: '$._env.myKey1', 54 | executionId: '$._task.executionId' 55 | }, 56 | onDone: { 57 | target: 'ready_for_approval', 58 | resultSelector: { 59 | a: 'a', 60 | b: 'b', 61 | out: '$._' 62 | }, 63 | resultPath: '$.pipeline1.success' 64 | }, 65 | onError: { 66 | target: 'failed', 67 | resultSelector: { 68 | c: 'c', 69 | d: 'd', 70 | out: '$._' 71 | }, 72 | resultPath: '$.pipeline1.error' 73 | } 74 | }, 75 | ready_for_approval: { 76 | type: 'atomic', 77 | on: { 78 | reject: { 79 | target: 'failed', 80 | resultPath: '$.reject.data' 81 | }, 82 | approve: { 83 | target: 'auto_test_2', 84 | resultPath: '$.approval.data' 85 | } 86 | } 87 | }, 88 | auto_test_2: { 89 | type: 'task', 90 | taskId, 91 | parameters: { 92 | dagId: 'dag2', 93 | data: '$._', 94 | token: '$._task.token', 95 | envKey: '$._env.myKey1', 96 | executionId: '$._task.executionId' 97 | }, 98 | onDone: { 99 | target: 'done', 100 | resultSelector: { 101 | e: 'e', 102 | out: '$._' 103 | }, 104 | resultPath: '$.pipeline2.success' 105 | }, 106 | onError: { 107 | target: 'failed', 108 | resultSelector: { 109 | f: 'f', 110 | out: '$._' 111 | }, 112 | resultPath: '$.pipeline2.error' 113 | } 114 | }, 115 | done: { 116 | type: 'final' 117 | }, 118 | failed: { 119 | type: 'final' 120 | } 121 | } 122 | } 123 | }); 124 | 125 | // start an execution with initial data 126 | const execution = await workflow.start({ 127 | input1: 'val1', 128 | input2: 'val2' 129 | }); 130 | 131 | // Sending events to an execution 132 | await execution.send({ 133 | type: 'success-auto_test_1', 134 | data: { 135 | test_a_result: true, 136 | test_b_result: false 137 | } 138 | }); 139 | 140 | await execution.send({ 141 | type: 'approve', 142 | data: { 143 | message: 'The acceptance test was fine' 144 | } 145 | }); 146 | 147 | await execution.send({ 148 | type: 'success-auto_test_2', 149 | data: { 150 | test_c_result: true 151 | } 152 | }); 153 | 154 | const { completed, output } = await execution.data(); 155 | expect(completed).toBe(true); 156 | expect(output).toMatchObject({ 157 | input1: 'val1', 158 | input2: 'val2', 159 | pipeline1: { 160 | success: { 161 | a: 'a', 162 | b: 'b', 163 | out: { 164 | test_a_result: true, 165 | test_b_result: false 166 | } 167 | } 168 | }, 169 | approval: { 170 | data: { 171 | message: 'The acceptance test was fine' 172 | } 173 | }, 174 | pipeline2: { 175 | success: { 176 | e: 'e', 177 | out: { 178 | test_c_result: true 179 | } 180 | } 181 | } 182 | }); 183 | }); 184 | -------------------------------------------------------------------------------- /tests/taskSyncNode.test.ts: -------------------------------------------------------------------------------- 1 | import axios from 'axios'; 2 | jest.mock('axios'); 3 | const mockedAxios = axios as jest.Mocked; 4 | mockedAxios.request.mockResolvedValue({}); 5 | import { Microflow } from '../src/microflow'; 6 | 7 | const flow = new Microflow({ 8 | jwt: { 9 | secretOrPublicKey: 'shhhhh', 10 | sign: { 11 | expiresIn: '24h' 12 | } 13 | } 14 | }); 15 | 16 | test('test transitions', async () => { 17 | const task = await flow.task.create({ 18 | id: 'airflow', 19 | type: 'http', 20 | config: { 21 | url: 'http://localhost:1000/api/experimental/dags/{{dagId}}/dag_runs', 22 | headers: { 23 | 'Cache-Control': 'no-cache', 24 | 'Content-Type': 'application/json' 25 | }, 26 | data: { 27 | conf: { 28 | actualData: '$.data', 29 | token: '$.token', 30 | envKey: '$.envKey', 31 | executionId: '$.executionId' 32 | } 33 | }, 34 | method: 'post' 35 | } 36 | }); 37 | 38 | const { id: taskId } = await task.data(); 39 | 40 | // Create a workflow 41 | const workflow = await flow.workflow.create({ 42 | id: 'sample', 43 | config: { 44 | initial: 'auto_test_1', 45 | states: { 46 | auto_test_1: { 47 | type: 'taskSync', 48 | taskId, 49 | parameters: { 50 | dagId: 'dag1', 51 | data: '$._', 52 | token: '$._task.token', 53 | envKey: '$._env.myKey1', 54 | executionId: '$._task.executionId' 55 | }, 56 | onDone: { 57 | target: 'ready_for_approval', 58 | resultSelector: { 59 | a: 'a', 60 | b: 'b', 61 | out: '$._' 62 | }, 63 | resultPath: '$.pipeline1.success' 64 | }, 65 | onError: { 66 | target: 'failed', 67 | resultSelector: { 68 | c: 'c', 69 | d: 'd', 70 | out: '$._' 71 | }, 72 | resultPath: '$.pipeline1.error' 73 | } 74 | }, 75 | ready_for_approval: { 76 | type: 'atomic', 77 | on: { 78 | reject: { 79 | target: 'failed', 80 | resultPath: '$.reject.data' 81 | }, 82 | approve: { 83 | target: 'auto_test_2', 84 | resultPath: '$.approval.data' 85 | } 86 | } 87 | }, 88 | auto_test_2: { 89 | type: 'taskSync', 90 | taskId, 91 | parameters: { 92 | dagId: 'dag2', 93 | data: '$._', 94 | token: '$._task.token', 95 | envKey: '$._env.myKey1', 96 | executionId: '$._task.executionId' 97 | }, 98 | onDone: { 99 | target: 'done', 100 | resultSelector: { 101 | e: 'e', 102 | out: '$._' 103 | }, 104 | resultPath: '$.pipeline2.success' 105 | }, 106 | onError: { 107 | target: 'failed', 108 | resultSelector: { 109 | f: 'f', 110 | out: '$._' 111 | }, 112 | resultPath: '$.pipeline2.error' 113 | } 114 | }, 115 | done: { 116 | type: 'final' 117 | }, 118 | failed: { 119 | type: 'final' 120 | } 121 | } 122 | } 123 | }); 124 | 125 | // start an execution with initial data 126 | const execution = await workflow.start({ 127 | input1: 'val1', 128 | input2: 'val2' 129 | }); 130 | 131 | await execution.send({ 132 | type: 'approve', 133 | data: { 134 | message: 'The acceptance test was fine' 135 | } 136 | }); 137 | 138 | const { completed, output } = await execution.data(); 139 | expect(completed).toBe(true); 140 | expect(output).toMatchObject({ 141 | input1: 'val1', 142 | input2: 'val2', 143 | pipeline1: { 144 | success: { 145 | a: 'a', 146 | b: 'b', 147 | out: {} 148 | } 149 | }, 150 | approval: { data: { message: 'The acceptance test was fine' } }, 151 | pipeline2: { 152 | success: { 153 | e: 'e', 154 | out: {} 155 | } 156 | } 157 | }); 158 | }); 159 | -------------------------------------------------------------------------------- /tests/taskToken.test.ts: -------------------------------------------------------------------------------- 1 | import jwt from 'jsonwebtoken'; 2 | import axios from 'axios'; 3 | jest.mock('axios'); 4 | const mockedAxios = axios as jest.Mocked; 5 | mockedAxios.request.mockResolvedValue({}); 6 | import { Microflow } from '../src/microflow'; 7 | 8 | const getTaskToken = (id, task) => 9 | jwt.sign({ workflowInstanceId: id, taskEventSuffix: task }, 'shhhhh', { 10 | expiresIn: '24h' 11 | }); 12 | 13 | const flow = new Microflow({ 14 | jwt: { 15 | secretOrPublicKey: 'shhhhh', 16 | sign: { 17 | expiresIn: '24h' 18 | } 19 | } 20 | }); 21 | 22 | test('test transitions with tokens', async () => { 23 | const task = await flow.task.create({ 24 | id: 'airflow', 25 | type: 'http', 26 | config: { 27 | url: 'http://localhost:1000/api/experimental/dags/{{dagId}}/dag_runs', 28 | headers: { 29 | 'Cache-Control': 'no-cache', 30 | 'Content-Type': 'application/json' 31 | }, 32 | data: { 33 | conf: { 34 | actualData: '$.data', 35 | token: '$.token', 36 | envKey: '$.envKey', 37 | executionId: '$.executionId' 38 | } 39 | }, 40 | method: 'post' 41 | } 42 | }); 43 | 44 | const { id: taskId } = await task.data(); 45 | 46 | const workflow = await flow.workflow.create({ 47 | id: 'sample', 48 | config: { 49 | initial: 'waiting', 50 | states: { 51 | waiting: { 52 | type: 'atomic', 53 | on: { 54 | start_test: { 55 | target: 'auto_test_1', 56 | resultPath: '$' 57 | } 58 | } 59 | }, 60 | auto_test_1: { 61 | type: 'task', 62 | taskId: 'airflow', 63 | parameters: { 64 | dagId: 'dag1', 65 | data: '$._', 66 | token: '$._task.token', 67 | envKey: '$._env.myKey1', 68 | executionId: '$._task.executionId' 69 | }, 70 | onDone: { 71 | target: 'ready_for_approval', 72 | resultSelector: { 73 | a: 'a', 74 | b: 'b', 75 | out: '$._' 76 | }, 77 | resultPath: '$.pipeline1.success' 78 | }, 79 | onError: { 80 | target: 'failed', 81 | resultSelector: { 82 | c: 'c', 83 | d: 'd', 84 | out: '$._' 85 | }, 86 | resultPath: '$.pipeline1.error' 87 | } 88 | }, 89 | ready_for_approval: { 90 | type: 'atomic', 91 | on: { 92 | reject: { 93 | target: 'failed', 94 | resultPath: '$.reject.data' 95 | }, 96 | approve: { 97 | target: 'auto_test_2', 98 | resultPath: '$.approval.data' 99 | } 100 | } 101 | }, 102 | auto_test_2: { 103 | type: 'task', 104 | taskId: taskId, 105 | parameters: { 106 | dagId: 'dag2', 107 | data: '$._', 108 | token: '$._task.token', 109 | envKey: '$._env.myKey1', 110 | executionId: '$._task.executionId' 111 | }, 112 | onDone: { 113 | target: 'done', 114 | resultSelector: { 115 | e: 'e', 116 | out: '$._' 117 | }, 118 | resultPath: '$.pipeline2.success' 119 | }, 120 | onError: { 121 | target: 'failed', 122 | resultSelector: { 123 | f: 'f', 124 | out: '$._' 125 | }, 126 | resultPath: '$.pipeline2.error' 127 | } 128 | }, 129 | done: { 130 | type: 'final' 131 | }, 132 | failed: { 133 | type: 'final' 134 | } 135 | } 136 | } 137 | }); 138 | 139 | const execution = await workflow.start(); 140 | 141 | const { id: executionId } = await execution.data(); 142 | 143 | await execution.send({ 144 | type: 'start_test', 145 | data: { input1: 'val1', input2: 'val2' } 146 | }); 147 | 148 | await flow.sendTaskSuccess(getTaskToken(executionId, 'auto_test_1'), { 149 | test_a_result: true, 150 | test_b_result: false 151 | }); 152 | 153 | await execution.send({ 154 | type: 'approve', 155 | data: { 156 | message: 'The acceptance test was fine' 157 | } 158 | }); 159 | 160 | await flow.sendTaskSuccess(getTaskToken(executionId, 'auto_test_2'), { 161 | test_c_result: true 162 | }); 163 | 164 | const { completed, output } = await execution.data(); 165 | expect(completed).toBe(true); 166 | expect(output).toMatchObject({ 167 | input1: 'val1', 168 | input2: 'val2', 169 | pipeline1: { 170 | success: { 171 | a: 'a', 172 | b: 'b', 173 | out: { 174 | test_a_result: true, 175 | test_b_result: false 176 | } 177 | } 178 | }, 179 | approval: { 180 | data: { 181 | message: 'The acceptance test was fine' 182 | } 183 | }, 184 | pipeline2: { 185 | success: { 186 | e: 'e', 187 | out: { 188 | test_c_result: true 189 | } 190 | } 191 | } 192 | }); 193 | }); 194 | -------------------------------------------------------------------------------- /tests/utils/index.test.ts: -------------------------------------------------------------------------------- 1 | import { transform, setOnPath } from '../../src/utils/index'; 2 | 3 | describe('transform function', () => { 4 | test('object input and root', () => { 5 | const output = transform( 6 | { 7 | a: '$', 8 | b: '$.key1', 9 | c: '$.jabber', 10 | d: 'constant', 11 | e: { 12 | f: 'constant', 13 | g: '$.key1', 14 | h: '$' 15 | } 16 | }, 17 | { 18 | key1: 'val1', 19 | key2: 'val2' 20 | } 21 | ); 22 | expect(output).toEqual({ 23 | a: { key1: 'val1', key2: 'val2' }, 24 | b: 'val1', 25 | c: undefined, 26 | d: 'constant', 27 | e: { f: 'constant', g: 'val1', h: { key1: 'val1', key2: 'val2' } } 28 | }); 29 | }); 30 | 31 | test('object input and root, access array indices', () => { 32 | const output = transform( 33 | { 34 | a: '$', 35 | b: '$.key1[1]', 36 | c: '$.jabber', 37 | d: 'constant', 38 | e: { 39 | f: 'constant', 40 | g: '$.key1', 41 | h: '$' 42 | } 43 | }, 44 | { 45 | key1: ['val1', 'val2'], 46 | key2: 'val3' 47 | } 48 | ); 49 | expect(output).toEqual({ 50 | a: { key1: ['val1', 'val2'], key2: 'val3' }, 51 | b: 'val2', 52 | c: undefined, 53 | d: 'constant', 54 | e: { 55 | f: 'constant', 56 | g: ['val1', 'val2'], 57 | h: { 58 | key1: ['val1', 'val2'], 59 | key2: 'val3' 60 | } 61 | } 62 | }); 63 | }); 64 | 65 | test('null input, object root', () => { 66 | const output = transform(null, { 67 | key1: 'val1', 68 | key2: 'val2' 69 | }); 70 | expect(output).toBeNull(); 71 | }); 72 | 73 | test('string input, object root', () => { 74 | const output = transform('$.key1', { 75 | key1: 'val1', 76 | key2: 'val2' 77 | }); 78 | expect(output).toEqual('val1'); 79 | }); 80 | 81 | test('object input, empty root', () => { 82 | const output = transform( 83 | { 84 | a: '$', 85 | b: '$.key1', 86 | c: '$.jabber', 87 | d: 'constant', 88 | e: { 89 | f: 'constant', 90 | g: '$.key1', 91 | h: '$' 92 | } 93 | }, 94 | {} 95 | ); 96 | expect(output).toEqual({ 97 | a: {}, 98 | b: undefined, 99 | c: undefined, 100 | d: 'constant', 101 | e: { 102 | f: 'constant', 103 | g: undefined, 104 | h: {} 105 | } 106 | }); 107 | }); 108 | 109 | test('object(with array key) input and root', () => { 110 | const output = transform( 111 | { 112 | url: 'http://localhost:1000/api/experimental/dags/{{dagId}}/dag_runs', 113 | headers: { 114 | 'Cache-Control': 'no-cache', 115 | 'Content-Type': 'application/json' 116 | }, 117 | data: { 118 | conf: { 119 | key: ['arrayVal'] 120 | } 121 | }, 122 | method: 'post' 123 | }, 124 | { 125 | dagId: 'dag1', 126 | data: '$' 127 | } 128 | ); 129 | expect(output).toEqual({ 130 | url: 'http://localhost:1000/api/experimental/dags/dag1/dag_runs', 131 | headers: { 132 | 'Cache-Control': 'no-cache', 133 | 'Content-Type': 'application/json' 134 | }, 135 | data: { 136 | conf: { 137 | key: ['arrayVal'] 138 | } 139 | }, 140 | method: 'post' 141 | }); 142 | }); 143 | }); 144 | 145 | describe('setOnPath function', () => { 146 | test('default path', () => { 147 | const output = setOnPath({ a: 1, b: 2 }, '$', { c: 3, d: 4 }); 148 | expect(output).toEqual({ c: 3, d: 4 }); 149 | }); 150 | 151 | test('empty object, default path', () => { 152 | const output = setOnPath({ a: 1, b: 2 }, '$', {}); 153 | expect(output).toEqual({}); 154 | }); 155 | 156 | test('empty object', () => { 157 | const output = setOnPath({ a: 1, b: 2 }, '$.c', {}); 158 | expect(output).toEqual({ a: 1, b: 2, c: {} }); 159 | }); 160 | 161 | test('empty root, default path', () => { 162 | const output = setOnPath({}, '$', { c: 3, d: 4 }); 163 | expect(output).toEqual({ c: 3, d: 4 }); 164 | }); 165 | 166 | test('empty root', () => { 167 | const output = setOnPath({}, '$.a', { c: 3, d: 4 }); 168 | expect(output).toEqual({ a: { c: 3, d: 4 } }); 169 | }); 170 | 171 | test('should overwrite key', () => { 172 | const output = setOnPath({ a: 1, b: 2 }, '$.b', { c: 3, d: 4 }); 173 | expect(output).toEqual({ a: 1, b: { c: 3, d: 4 } }); 174 | }); 175 | 176 | test('should write nested key', () => { 177 | const output = setOnPath({ a: 1, b: 2 }, '$.c.d', { c: 3, d: 4 }); 178 | expect(output).toEqual({ a: 1, b: 2, c: { d: { c: 3, d: 4 } } }); 179 | }); 180 | 181 | test('should overwrite nested key', () => { 182 | const output = setOnPath({ a: 1, b: 2, c: { d: 3 } }, '$.c.d', { 183 | c: 3, 184 | d: 4 185 | }); 186 | expect(output).toEqual({ a: 1, b: 2, c: { d: { c: 3, d: 4 } } }); 187 | }); 188 | }); 189 | -------------------------------------------------------------------------------- /tsconfig.json: -------------------------------------------------------------------------------- 1 | { 2 | "compilerOptions": { 3 | "allowSyntheticDefaultImports": true, 4 | "outDir": "./lib", 5 | "declaration": true, 6 | "declarationMap": true, 7 | "moduleResolution": "node", 8 | "esModuleInterop": true, 9 | "module": "commonjs", 10 | "allowJs": true, 11 | "target": "ES2018" 12 | }, 13 | "include": ["./src/**/*"] 14 | } 15 | --------------------------------------------------------------------------------