@tsclean/core
Version:
Plugin for API Rest Full development, based on Clean Architecture, IoC and Dependency Injection.
195 lines • 38.3 kB
JavaScript
"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.RouterExplorer = void 0;
const path_to_regexp_1 = __importDefault(require("path-to-regexp"));
const errors_1 = require("../errors");
const helpers_1 = require("../helpers");
const interceptors_1 = require("../interceptors");
const request_constants_1 = require("./request/request-constants");
const route_params_factory_1 = require("./route-params-factory");
const router_execution_context_1 = require("./router-execution-context");
const enums_1 = require("../enums");
const services_1 = require("../services");
const core_1 = require("../core");
const access_1 = require("../access");
const utils_1 = require("../utils");
const exceptions_1 = require("../exceptions");
class RouterExplorer {
constructor(metadataScanner, container, graphInspector, injector, routerProxy, exceptionsFilter, config, routePathFactory) {
this.metadataScanner = metadataScanner;
this.container = container;
this.graphInspector = graphInspector;
this.injector = injector;
this.routerProxy = routerProxy;
this.exceptionsFilter = exceptionsFilter;
this.routePathFactory = routePathFactory;
this.routerMethodFactory = new helpers_1.RouterMethodFactory();
this.logger = new services_1.Logger(null, { timestamp: true });
this.exceptionFiltersCache = new WeakMap();
const routeParamsFactory = new route_params_factory_1.RouteParamsFactory();
const pipesContextCreator = new core_1.HandlersContextCreator(container, config);
const pipesConsumer = new core_1.HandlersConsumer();
const guardsContextCreator = new access_1.AccessResourceContextCreator(container, config);
const guardsConsumer = new access_1.AccessResourceConsumer();
const interceptorsContextCreator = new interceptors_1.InterceptorsContextCreator(container, config);
const interceptorsConsumer = new interceptors_1.InterceptorsConsumer();
this.executionContextCreator = new router_execution_context_1.RouterExecutionContext(routeParamsFactory, pipesContextCreator, pipesConsumer, guardsContextCreator, guardsConsumer, interceptorsContextCreator, interceptorsConsumer, container.getHttpAdapterRef());
}
explore(instanceWrapper, moduleKey, applicationRef, host, routePathMetadata) {
const { instance } = instanceWrapper;
const routerPaths = this.scanForPaths(instance);
this.applyPathsToRouterProxy(applicationRef, routerPaths, instanceWrapper, moduleKey, routePathMetadata, host);
}
extractRouterPath(metaType) {
const path = Reflect.getMetadata(helpers_1.PATH_METADATA, metaType);
if ((0, utils_1.isUndefined)(path))
throw new errors_1.UnknownRequestMappingException();
if (Array.isArray(path))
return path.map(p => (0, utils_1.addLeadingSlash)(p));
return [(0, utils_1.addLeadingSlash)(path)];
}
scanForPaths(instance, prototype) {
const instancePrototype = (0, utils_1.isUndefined)(prototype)
? Object.getPrototypeOf(instance)
: prototype;
return this.metadataScanner.scanFromPrototype(instance, instancePrototype, method => this.exploreMethodMetadata(instance, instancePrototype, method));
}
exploreMethodMetadata(instance, prototype, methodName) {
const instanceCallback = instance[methodName];
const prototypeCallback = prototype[methodName];
const routePath = Reflect.getMetadata(helpers_1.PATH_METADATA, prototypeCallback);
if ((0, utils_1.isUndefined)(routePath))
return undefined;
const requestMethod = Reflect.getMetadata(helpers_1.METHOD_METADATA, prototypeCallback);
const path = (0, utils_1.isString)(routePath)
? [(0, utils_1.addLeadingSlash)(routePath)]
: routePath.map((p) => (0, utils_1.addLeadingSlash)(p));
return {
path,
requestMethod,
targetCallback: instanceCallback,
methodName
};
}
applyPathsToRouterProxy(router, routeDefinitions, instanceWrapper, moduleKey, routePathMetadata, host) {
;
(routeDefinitions || []).forEach(routeDefinition => {
const { version: methodVersion } = routeDefinition;
routePathMetadata.methodVersion = methodVersion;
this.applyCallbackToRouter(router, routeDefinition, instanceWrapper, moduleKey, routePathMetadata, host);
});
}
applyCallbackToRouter(router, routeDefinition, instanceWrapper, moduleKey, routePathMetadata, host) {
const { path: paths, requestMethod, targetCallback, methodName } = routeDefinition;
const { instance } = instanceWrapper;
const routerMethodRef = this.routerMethodFactory
.get(router, requestMethod)
.bind(router);
const isRequestScoped = !instanceWrapper.isDependencyTreeStatic();
const proxy = isRequestScoped
? this.createRequestScopedHandler(instanceWrapper, requestMethod, this.container.getModuleByKey(moduleKey), moduleKey, methodName)
: this.createCallbackProxy(instance, targetCallback, methodName, moduleKey, requestMethod);
let routeHandler = this.applyHostFilter(host, proxy);
paths.forEach(path => {
routePathMetadata.methodPath = path;
const pathsToRegister = this.routePathFactory.create(routePathMetadata, requestMethod);
pathsToRegister.forEach(path => {
const entrypointDefinition = {
type: 'http-endpoint',
methodName,
className: instanceWrapper.name,
classNodeId: instanceWrapper.id,
metadata: {
key: path,
path,
requestMethod: enums_1.RequestMethod[requestMethod]
}
};
this.copyMetadataToCallback(targetCallback, routeHandler);
routerMethodRef(path, routeHandler);
this.graphInspector.insertEntrypointDefinition(entrypointDefinition, instanceWrapper.id);
});
const pathsToLog = this.routePathFactory.create(Object.assign(Object.assign({}, routePathMetadata), { versioningOptions: undefined }), requestMethod);
pathsToLog.forEach(path => this.logger.log((0, helpers_1.ROUTE_MAPPED_MESSAGE)(path, requestMethod)));
});
}
applyHostFilter(host, handler) {
if (!host)
return handler;
const httpAdapterRef = this.container.getHttpAdapterRef();
const hosts = Array.isArray(host) ? host : [host];
const hostRegExps = hosts.map((host) => {
const keys = [];
const regexp = (0, path_to_regexp_1.default)(host, keys);
return { regexp, keys };
});
const unsupportedFilteringErrorMessage = Array.isArray(host)
? `HTTP adapter does not support filtering on hosts: ["${host.join('", "')}"]`
: `HTTP adapter does not support filtering on host: "${host}"`;
return (req, res, next) => {
;
req.hosts = {};
const hostname = httpAdapterRef.getRequestHostname(req) || '';
for (const exp of hostRegExps) {
const match = hostname.match(exp.regexp);
if (match) {
exp.keys.forEach((key, i) => (req.hosts[key.name] = match[i + 1]));
return handler(req, res, next);
}
}
if (!next)
throw new exceptions_1.InternalServerErrorException(unsupportedFilteringErrorMessage);
return next();
};
}
createCallbackProxy(instance, callback, methodName, moduleRef, requestMethod, contextId = core_1.STATIC_CONTEXT, inquirerId) {
var _a;
const executionContext = this.executionContextCreator.create(instance, callback, methodName, moduleRef, requestMethod, contextId, inquirerId);
const exceptionFilter = this.exceptionsFilter.create(instance, callback, moduleRef, contextId, inquirerId);
return (_a = this.routerProxy) === null || _a === void 0 ? void 0 : _a.createProxy(executionContext, exceptionFilter);
}
createRequestScopedHandler(instanceWrapper, requestMethod, moduleRef, moduleKey, methodName) {
const { instance } = instanceWrapper;
const collection = moduleRef.controllers;
return async (req, res, next) => {
var _a, _b;
try {
const contextId = this.getContextId(req);
const contextInstance = await ((_a = this.injector) === null || _a === void 0 ? void 0 : _a.loadPerContext(instance, moduleRef, collection, contextId));
await this.createCallbackProxy(contextInstance, contextInstance[methodName], methodName, moduleKey, requestMethod, contextId, instanceWrapper.id)(req, res, next);
}
catch (err) {
let exceptionFilter = this.exceptionFiltersCache.get(instance[methodName]);
if (!exceptionFilter) {
exceptionFilter = (_b = this.exceptionsFilter) === null || _b === void 0 ? void 0 : _b.create(instance, instance[methodName], moduleKey);
this.exceptionFiltersCache.set(instance[methodName], exceptionFilter);
}
const host = new helpers_1.ExecutionContextHost([req, res, next]);
exceptionFilter.next(err, host);
}
};
}
getContextId(request) {
const contextId = helpers_1.ContextIdFactory.getByRequest(request);
if (!request[request_constants_1.REQUEST_CONTEXT_ID]) {
Object.defineProperty(request, request_constants_1.REQUEST_CONTEXT_ID, {
value: contextId,
enumerable: false,
writable: false,
configurable: false
});
this.container.registerRequestProvider(request, contextId);
}
return contextId;
}
copyMetadataToCallback(originalCallback, targetCallback) {
for (const key of Reflect.getMetadataKeys(originalCallback)) {
Reflect.defineMetadata(key, Reflect.getMetadata(key, originalCallback), targetCallback);
}
}
}
exports.RouterExplorer = RouterExplorer;
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pathToRegexp from 'path-to-regexp'\nimport { UnknownRequestMappingException } from '../errors'\nimport {\n  ROUTE_MAPPED_MESSAGE,\n  ContextIdFactory,\n  ExecutionContextHost,\n  RouterMethodFactory,\n  PATH_METADATA,\n  METHOD_METADATA\n} from '../helpers'\nimport {\n  InterceptorsConsumer,\n  InterceptorsContextCreator\n} from '../interceptors'\nimport { REQUEST_CONTEXT_ID } from './request/request-constants'\nimport { RouteParamsFactory } from './route-params-factory'\nimport { RoutePathFactory } from './route-path-factory'\nimport { RouterExecutionContext } from './router-execution-context'\nimport { RouterProxy, RouterProxyCallback } from './router-proxy'\nimport { RequestMethod } from '../enums'\nimport {\n  ExceptionsFilterInterface,\n  HttpServer,\n  RouteDefinitionInterface,\n  RoutePathMetadataInterface,\n  Type\n} from '../contracts'\nimport { Logger } from '../services'\nimport { ApplicationConfig, MetadataScanner } from '../app'\nimport {\n  ContextId,\n  Injector,\n  InstanceWrapper,\n  Module,\n  ContainerIoC,\n  HandlersConsumer,\n  HandlersContextCreator,\n  STATIC_CONTEXT\n} from '../core'\nimport { AccessResourceConsumer, AccessResourceContextCreator } from '../access'\nimport { ControllerType } from '../types'\nimport { addLeadingSlash, isString, isUndefined } from '../utils'\nimport { InternalServerErrorException } from '../exceptions'\nimport {\n  Entrypoint,\n  GraphInspector,\n  HttpEntrypointMetadata\n} from '../inspector'\n\nexport class RouterExplorer {\n  private readonly executionContextCreator: RouterExecutionContext\n  private readonly routerMethodFactory = new RouterMethodFactory()\n  private readonly logger = new Logger(null, { timestamp: true })\n  private readonly exceptionFiltersCache = new WeakMap()\n\n  constructor (\n    private readonly metadataScanner: MetadataScanner,\n    private readonly container: ContainerIoC,\n    private readonly graphInspector: GraphInspector,\n    private readonly injector?: Injector,\n    private readonly routerProxy?: RouterProxy,\n    private readonly exceptionsFilter?: ExceptionsFilterInterface,\n    config?: ApplicationConfig,\n    private readonly routePathFactory?: RoutePathFactory,\n  ) {\n    const routeParamsFactory = new RouteParamsFactory()\n    const pipesContextCreator = new HandlersContextCreator(container, config)\n    const pipesConsumer = new HandlersConsumer()\n    const guardsContextCreator = new AccessResourceContextCreator(\n      container,\n      config\n    )\n    const guardsConsumer = new AccessResourceConsumer()\n    const interceptorsContextCreator = new InterceptorsContextCreator(\n      container,\n      config\n    )\n    const interceptorsConsumer = new InterceptorsConsumer()\n\n    this.executionContextCreator = new RouterExecutionContext(\n      routeParamsFactory,\n      pipesContextCreator,\n      pipesConsumer,\n      guardsContextCreator,\n      guardsConsumer,\n      interceptorsContextCreator,\n      interceptorsConsumer,\n      container.getHttpAdapterRef()\n    )\n  }\n\n  public explore<T extends HttpServer = any> (\n    instanceWrapper: InstanceWrapper,\n    moduleKey: string,\n    applicationRef: T,\n    host: string | RegExp | Array<string | RegExp> | undefined,\n    routePathMetadata: RoutePathMetadataInterface\n  ) {\n    const { instance } = instanceWrapper\n    const routerPaths = this.scanForPaths(instance)\n    this.applyPathsToRouterProxy(\n      applicationRef,\n      routerPaths,\n      instanceWrapper,\n      moduleKey,\n      routePathMetadata,\n      host\n    )\n  }\n\n  public extractRouterPath (metaType: Type<ControllerType>): string[] {\n    const path = Reflect.getMetadata(PATH_METADATA, metaType)\n    if (isUndefined(path)) throw new UnknownRequestMappingException()\n    if (Array.isArray(path)) return path.map(p => addLeadingSlash(p))\n\n    return [addLeadingSlash(path)]\n  }\n\n  public scanForPaths (\n    instance: ControllerType,\n    prototype?: object\n  ): RouteDefinitionInterface[] {\n    const instancePrototype = isUndefined(prototype)\n      ? Object.getPrototypeOf(instance)\n      : prototype\n\n    return this.metadataScanner.scanFromPrototype<\n      ControllerType,\n      RouteDefinitionInterface\n    >(instance, instancePrototype, method =>\n      this.exploreMethodMetadata(instance, instancePrototype, method)\n    )\n  }\n\n  public exploreMethodMetadata (\n    instance: ControllerType,\n    prototype: object,\n    methodName: string\n  ): RouteDefinitionInterface {\n    const instanceCallback = instance[methodName]\n    const prototypeCallback = prototype[methodName]\n    const routePath = Reflect.getMetadata(PATH_METADATA, prototypeCallback)\n    if (isUndefined(routePath)) return undefined\n\n    const requestMethod: RequestMethod = Reflect.getMetadata(\n      METHOD_METADATA,\n      prototypeCallback\n    )\n    const path = isString(routePath)\n      ? [addLeadingSlash(routePath)]\n      : routePath.map((p: string) => addLeadingSlash(p))\n\n    return {\n      path,\n      requestMethod,\n      targetCallback: instanceCallback,\n      methodName\n    }\n  }\n\n  public applyPathsToRouterProxy<T extends HttpServer> (\n    router: T,\n    routeDefinitions: RouteDefinitionInterface[],\n    instanceWrapper: InstanceWrapper,\n    moduleKey: string,\n    routePathMetadata: RoutePathMetadataInterface,\n    host: string | RegExp | Array<string | RegExp> | undefined\n  ) {\n    ;(routeDefinitions || []).forEach(routeDefinition => {\n      const { version: methodVersion } = routeDefinition\n      routePathMetadata.methodVersion = methodVersion\n\n      this.applyCallbackToRouter(\n        router,\n        routeDefinition,\n        instanceWrapper,\n        moduleKey,\n        routePathMetadata,\n        host\n      )\n    })\n  }\n\n  private applyCallbackToRouter<T extends HttpServer> (\n    router: T,\n    routeDefinition: RouteDefinitionInterface,\n    instanceWrapper: InstanceWrapper,\n    moduleKey: string,\n    routePathMetadata: RoutePathMetadataInterface,\n    host: string | RegExp | Array<string | RegExp> | undefined\n  ) {\n    const {\n      path: paths,\n      requestMethod,\n      targetCallback,\n      methodName\n    } = routeDefinition\n\n    const { instance } = instanceWrapper\n    const routerMethodRef = this.routerMethodFactory\n      .get(router, requestMethod)\n      .bind(router)\n\n    const isRequestScoped = !instanceWrapper.isDependencyTreeStatic()\n    const proxy = isRequestScoped\n      ? this.createRequestScopedHandler(\n          instanceWrapper,\n          requestMethod,\n          this.container.getModuleByKey(moduleKey),\n          moduleKey,\n          methodName\n        )\n      : this.createCallbackProxy(\n          instance,\n          targetCallback,\n          methodName,\n          moduleKey,\n          requestMethod\n        )\n\n    let routeHandler = this.applyHostFilter(host, proxy)\n\n    paths.forEach(path => {\n      routePathMetadata.methodPath = path\n      const pathsToRegister = this.routePathFactory.create(\n        routePathMetadata,\n        requestMethod\n      )\n      pathsToRegister.forEach(path => {\n        const entrypointDefinition: Entrypoint<HttpEntrypointMetadata> = {\n          type: 'http-endpoint',\n          methodName,\n          className: instanceWrapper.name,\n          classNodeId: instanceWrapper.id,\n          metadata: {\n            key: path,\n            path,\n            requestMethod: RequestMethod[\n              requestMethod\n            ] as keyof typeof RequestMethod\n          }\n        }\n\n        this.copyMetadataToCallback(targetCallback, routeHandler)\n        routerMethodRef(path, routeHandler)\n\n        this.graphInspector.insertEntrypointDefinition<HttpEntrypointMetadata>(\n          entrypointDefinition,\n          instanceWrapper.id\n        )\n      })\n\n      const pathsToLog = this.routePathFactory.create(\n        {\n          ...routePathMetadata,\n          versioningOptions: undefined\n        },\n        requestMethod\n      )\n      pathsToLog.forEach(path =>\n        this.logger.log(ROUTE_MAPPED_MESSAGE(path, requestMethod))\n      )\n    })\n  }\n\n  private applyHostFilter (\n    host: string | RegExp | Array<string | RegExp> | undefined,\n    handler: Function\n  ) {\n    if (!host) return handler\n\n    const httpAdapterRef = this.container.getHttpAdapterRef()\n    const hosts = Array.isArray(host) ? host : [host]\n    const hostRegExps = hosts.map((host: string | RegExp) => {\n      const keys: any = []\n      const regexp = pathToRegexp(host, keys)\n      return { regexp, keys }\n    })\n\n    const unsupportedFilteringErrorMessage = Array.isArray(host)\n      ? `HTTP adapter does not support filtering on hosts: [\"${host.join(\n          '\", \"'\n        )}\"]`\n      : `HTTP adapter does not support filtering on host: \"${host}\"`\n\n    return <T extends Record<string, any> = any, R = any>(\n      req: T,\n      res: R,\n      next: () => void\n    ) => {\n      ;(req as Record<string, any>).hosts = {}\n      const hostname = httpAdapterRef.getRequestHostname(req) || ''\n\n      for (const exp of hostRegExps) {\n        const match = hostname.match(exp.regexp)\n        if (match) {\n          exp.keys.forEach(\n            (key: any, i: any) => (req.hosts[key.name] = match[i + 1])\n          )\n          return handler(req, res, next)\n        }\n      }\n      if (!next)\n        throw new InternalServerErrorException(unsupportedFilteringErrorMessage)\n      return next()\n    }\n  }\n\n  private createCallbackProxy (\n    instance: ControllerType,\n    callback: RouterProxyCallback,\n    methodName: string,\n    moduleRef: string,\n    requestMethod: RequestMethod,\n    contextId = STATIC_CONTEXT,\n    inquirerId?: string\n  ) {\n    const executionContext = this.executionContextCreator.create(\n      instance,\n      callback,\n      methodName,\n      moduleRef,\n      requestMethod,\n      contextId,\n      inquirerId\n    )\n    const exceptionFilter = this.exceptionsFilter.create(\n      instance,\n      callback,\n      moduleRef,\n      contextId,\n      inquirerId\n    )\n    return this.routerProxy?.createProxy(executionContext, exceptionFilter)\n  }\n\n  public createRequestScopedHandler (\n    instanceWrapper: InstanceWrapper,\n    requestMethod: RequestMethod,\n    moduleRef: Module,\n    moduleKey: string,\n    methodName: string\n  ) {\n    const { instance } = instanceWrapper\n    const collection = moduleRef.controllers\n    return async <T extends Record<any, any>, R>(\n      req: T,\n      res: R,\n      next: () => void\n    ) => {\n      try {\n        const contextId = this.getContextId(req)\n        const contextInstance = await this.injector?.loadPerContext(\n          instance,\n          moduleRef,\n          collection,\n          contextId\n        )\n        await this.createCallbackProxy(\n          contextInstance,\n          contextInstance[methodName],\n          methodName,\n          moduleKey,\n          requestMethod,\n          contextId,\n          instanceWrapper.id\n        )(req, res, next)\n      } catch (err) {\n        let exceptionFilter = this.exceptionFiltersCache.get(\n          instance[methodName]\n        )\n        if (!exceptionFilter) {\n          exceptionFilter = this.exceptionsFilter?.create(\n            instance,\n            instance[methodName],\n            moduleKey\n          )\n          this.exceptionFiltersCache.set(instance[methodName], exceptionFilter)\n        }\n        const host = new ExecutionContextHost([req, res, next])\n        exceptionFilter.next(err, host)\n      }\n    }\n  }\n\n  private getContextId<T extends Record<any, unknown> = any> (\n    request: T\n  ): ContextId {\n    const contextId = ContextIdFactory.getByRequest(request)\n    if (!request[REQUEST_CONTEXT_ID as any]) {\n      Object.defineProperty(request, REQUEST_CONTEXT_ID, {\n        value: contextId,\n        enumerable: false,\n        writable: false,\n        configurable: false\n      })\n      this.container.registerRequestProvider(request, contextId)\n    }\n    return contextId\n  }\n\n  private copyMetadataToCallback (\n    originalCallback: RouterProxyCallback,\n    targetCallback: Function\n  ) {\n    for (const key of Reflect.getMetadataKeys(originalCallback)) {\n      Reflect.defineMetadata(\n        key,\n        Reflect.getMetadata(key, originalCallback),\n        targetCallback\n      )\n    }\n  }\n}\n"]}