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feat: multi provider implementation for Node
1 parent c2adbfb commit bb17e3f

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-2274
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‎.release-please-manifest.json‎

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"libs/providers/flipt": "0.1.0",
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"libs/providers/flagsmith-client": "0.1.2",
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"libs/providers/flipt-web": "0.1.0",
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"libs/providers/multi-provider": "0.1.0",
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"libs/providers/growthbook-client": "0.1.1"
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}

‎libs/providers/multi-provider/.eslintrc.json‎

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{
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"extends": ["../../../.eslintrc.json"],
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"ignorePatterns": ["!**/*"],
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"overrides": [
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{
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"files": ["*.ts", "*.tsx", "*.js", "*.jsx"],
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"rules": {}
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},
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{
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"files": ["*.ts", "*.tsx"],
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"rules": {}
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},
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{
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"files": ["*.js", "*.jsx"],
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"rules": {}
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},
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{
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"files": ["*.json"],
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"parser": "jsonc-eslint-parser",
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"rules": {
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"@nx/dependency-checks": "error"
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}
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}
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]
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}

‎libs/providers/multi-provider/README.md‎

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# Multi Provider
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## Installation
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```
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$ npm install @openfeature/multi-provider
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```
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## Building
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Run `nx package providers-multi-provider` to build the library.
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## Running unit tests
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Run `nx test providers-multi-provider` to execute the unit tests via [Jest](https://jestjs.io).

‎libs/providers/multi-provider/babel.config.json‎

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{
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"presets": [["minify", { "builtIns": false }]]
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}

‎libs/providers/multi-provider/jest.config.ts‎

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/* eslint-disable */
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export default {
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displayName: 'providers-multi-provider',
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preset: '../../../jest.preset.js',
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transform: {
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'^.+\\.[tj]s$': ['ts-jest', { tsconfig: '<rootDir>/tsconfig.spec.json' }],
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},
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moduleFileExtensions: ['ts', 'js', 'html'],
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coverageDirectory: '../../../coverage/libs/providers/multi-provider',
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};

‎libs/providers/multi-provider/package.json‎

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{
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"name": "@openfeature/vendor-migration-provider",
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"version": "0.0.1",
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"dependencies": {
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"tslib": "^2.3.0"
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},
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"main": "./src/index.js",
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"typings": "./src/index.d.ts",
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"scripts": {
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"publish-if-not-exists": "cp $NPM_CONFIG_USERCONFIG .npmrc && if [ \"$(npm show $npm_package_name@$npm_package_version version)\" = \"$(npm run current-version -s)\" ]; then echo 'already published, skipping'; else npm publish --access public; fi",
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"current-version": "echo $npm_package_version"
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},
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"peerDependencies": {
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"@openfeature/server-sdk": "^1.6.0"
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}
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}

‎libs/providers/multi-provider/project.json‎

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{
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"name": "providers-multi-provider",
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"$schema": "../../../node_modules/nx/schemas/project-schema.json",
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"sourceRoot": "libs/providers/multi-provider/src",
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"projectType": "library",
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"targets": {
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"publish": {
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"executor": "nx:run-commands",
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"options": {
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"command": "npm run publish-if-not-exists",
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"cwd": "dist/libs/providers/multi"
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},
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"dependsOn": [
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{
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"projects": "self",
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"target": "package"
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}
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]
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},
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"lint": {
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"executor": "@nx/linter:eslint",
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"outputs": ["{options.outputFile}"],
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"options": {
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"lintFilePatterns": ["libs/providers/multi-provider/**/*.ts", "libs/providers/multi-provider/package.json"]
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}
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},
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"test": {
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"executor": "@nx/jest:jest",
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"outputs": ["{workspaceRoot}/coverage/{projectRoot}"],
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"options": {
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"jestConfig": "libs/providers/multi-provider/jest.config.ts",
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"passWithNoTests": true
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},
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"configurations": {
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"ci": {
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"ci": true,
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"codeCoverage": true
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}
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}
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},
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"package": {
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"executor": "@nx/rollup:rollup",
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"outputs": ["{options.outputPath}"],
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"options": {
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"project": "libs/providers/multi-provider/package.json",
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"outputPath": "dist/libs/providers/multi",
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"entryFile": "libs/providers/multi-provider/src/index.ts",
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"tsConfig": "libs/providers/multi-provider/tsconfig.lib.json",
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"buildableProjectDepsInPackageJsonType": "dependencies",
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"compiler": "tsc",
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"generateExportsField": true,
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"umdName": "multi",
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"external": "all",
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"format": ["cjs", "esm"],
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"assets": [
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{
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"glob": "package.json",
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"input": "./assets",
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"output": "./src/"
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},
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{
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"glob": "LICENSE",
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"input": "./",
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"output": "./"
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},
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{
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"glob": "README.md",
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"input": "./libs/providers/multi",
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"output": "./"
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}
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]
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}
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}
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},
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"tags": []
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}

‎libs/providers/multi-provider/src/index.ts‎

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export * from './lib/multi-provider';
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export * from './lib/errors';

‎libs/providers/multi-provider/src/lib/errors.ts‎

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import { ErrorCode, GeneralError, OpenFeatureError } from '@openfeature/server-sdk';
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export class ErrorWithCode extends OpenFeatureError {
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constructor(
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public code: ErrorCode,
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message: string,
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) {
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super(message);
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}
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}
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export class AggregateError extends GeneralError {
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constructor(
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message: string,
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public originalErrors: { source: string; error: unknown }[],
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) {
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super(message);
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}
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}

‎libs/providers/multi-provider/src/lib/hook-executor.ts‎

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import { EvaluationDetails, FlagValue, Hook, HookContext, HookHints, Logger } from '@openfeature/server-sdk';
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/**
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* Utility for executing a set of hooks of each type. Implementation is largely copied from the main OpenFeature SDK.
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*/
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export class HookExecutor {
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constructor(private logger: Logger) {}
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async beforeHooks(hooks: Hook[] | undefined, hookContext: HookContext, hints: HookHints) {
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const newContext = { ...hookContext.context };
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for (const hook of hooks ?? []) {
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// freeze the hookContext
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Object.freeze(hookContext);
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Object.assign(newContext, {
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...(await hook?.before?.(hookContext, Object.freeze(hints))),
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});
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}
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// after before hooks, freeze the EvaluationContext.
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return Object.freeze(newContext);
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}
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async afterHooks(
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hooks: Hook[] | undefined,
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hookContext: HookContext,
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evaluationDetails: EvaluationDetails<FlagValue>,
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hints: HookHints,
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) {
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// run "after" hooks sequentially
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for (const hook of hooks ?? []) {
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await hook?.after?.(hookContext, evaluationDetails, hints);
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}
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}
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async errorHooks(hooks: Hook[] | undefined, hookContext: HookContext, err: unknown, hints: HookHints) {
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// run "error" hooks sequentially
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for (const hook of hooks ?? []) {
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try {
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await hook?.error?.(hookContext, err, hints);
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} catch (err) {
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this.logger.error(`Unhandled error during 'error' hook: ${err}`);
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if (err instanceof Error) {
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this.logger.error(err.stack);
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}
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this.logger.error((err as Error)?.stack);
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}
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}
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}
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async finallyHooks(hooks: Hook[] | undefined, hookContext: HookContext, hints: HookHints) {
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// run "finally" hooks sequentially
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for (const hook of hooks ?? []) {
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try {
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await hook?.finally?.(hookContext, hints);
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} catch (err) {
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this.logger.error(`Unhandled error during 'finally' hook: ${err}`);
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if (err instanceof Error) {
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this.logger.error(err.stack);
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}
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this.logger.error((err as Error)?.stack);
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}
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}
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}
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}

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