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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.RouterExplorer = void 0;
const constants_1 = require("@nestjs/common/constants");
const version_type_enum_1 = require("@nestjs/common/enums/version-type.enum");
const exceptions_1 = require("@nestjs/common/exceptions");
const version_options_interface_1 = require("@nestjs/common/interfaces/version-options.interface");
const logger_service_1 = require("@nestjs/common/services/logger.service");
const shared_utils_1 = require("@nestjs/common/utils/shared.utils");
const pathToRegexp = require("path-to-regexp");
const unknown_request_mapping_exception_1 = require("../errors/exceptions/unknown-request-mapping.exception");
const guards_consumer_1 = require("../guards/guards-consumer");
const guards_context_creator_1 = require("../guards/guards-context-creator");
const context_id_factory_1 = require("../helpers/context-id-factory");
const execution_context_host_1 = require("../helpers/execution-context-host");
const messages_1 = require("../helpers/messages");
const router_method_factory_1 = require("../helpers/router-method-factory");
const constants_2 = require("../injector/constants");
const interceptors_consumer_1 = require("../interceptors/interceptors-consumer");
const interceptors_context_creator_1 = require("../interceptors/interceptors-context-creator");
const pipes_consumer_1 = require("../pipes/pipes-consumer");
const pipes_context_creator_1 = require("../pipes/pipes-context-creator");
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");
class RouterExplorer {
constructor(metadataScanner, container, injector, routerProxy, exceptionsFilter, config, routePathFactory) {
this.metadataScanner = metadataScanner;
this.container = container;
this.injector = injector;
this.routerProxy = routerProxy;
this.exceptionsFilter = exceptionsFilter;
this.config = config;
this.routePathFactory = routePathFactory;
this.routerMethodFactory = new router_method_factory_1.RouterMethodFactory();
this.logger = new logger_service_1.Logger(RouterExplorer.name, {
timestamp: true,
});
this.exceptionFiltersCache = new WeakMap();
const routeParamsFactory = new route_params_factory_1.RouteParamsFactory();
const pipesContextCreator = new pipes_context_creator_1.PipesContextCreator(container, config);
const pipesConsumer = new pipes_consumer_1.PipesConsumer();
const guardsContextCreator = new guards_context_creator_1.GuardsContextCreator(container, config);
const guardsConsumer = new guards_consumer_1.GuardsConsumer();
const interceptorsContextCreator = new interceptors_context_creator_1.InterceptorsContextCreator(container, config);
const interceptorsConsumer = new interceptors_consumer_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(constants_1.PATH_METADATA, metatype);
if ((0, shared_utils_1.isUndefined)(path)) {
throw new unknown_request_mapping_exception_1.UnknownRequestMappingException();
}
if (Array.isArray(path)) {
return path.map(p => (0, shared_utils_1.addLeadingSlash)(p));
}
return [(0, shared_utils_1.addLeadingSlash)(path)];
}
scanForPaths(instance, prototype) {
const instancePrototype = (0, shared_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(constants_1.PATH_METADATA, prototypeCallback);
if ((0, shared_utils_1.isUndefined)(routePath)) {
return null;
}
const requestMethod = Reflect.getMetadata(constants_1.METHOD_METADATA, prototypeCallback);
const version = Reflect.getMetadata(constants_1.VERSION_METADATA, prototypeCallback);
const path = (0, shared_utils_1.isString)(routePath)
? [(0, shared_utils_1.addLeadingSlash)(routePath)]
: routePath.map((p) => (0, shared_utils_1.addLeadingSlash)(p));
return {
path,
requestMethod,
targetCallback: instanceCallback,
methodName,
version,
};
}
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);
const isVersioned = (routePathMetadata.methodVersion ||
routePathMetadata.controllerVersion) &&
routePathMetadata.versioningOptions;
let routeHandler = this.applyHostFilter(host, proxy);
paths.forEach(path => {
if (isVersioned &&
routePathMetadata.versioningOptions.type !== version_type_enum_1.VersioningType.URI) {
// All versioning (except for URI Versioning) is done via the "Version Filter"
routeHandler = this.applyVersionFilter(router, routePathMetadata, routeHandler);
}
routePathMetadata.methodPath = path;
const pathsToRegister = this.routePathFactory.create(routePathMetadata, requestMethod);
pathsToRegister.forEach(path => routerMethodRef(path, routeHandler));
const pathsToLog = this.routePathFactory.create(Object.assign(Object.assign({}, routePathMetadata), { versioningOptions: undefined }), requestMethod);
pathsToLog.forEach(path => {
if (isVersioned) {
const version = this.routePathFactory.getVersion(routePathMetadata);
this.logger.log((0, messages_1.VERSIONED_ROUTE_MAPPED_MESSAGE)(path, requestMethod, version));
}
else {
this.logger.log((0, messages_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 = pathToRegexp(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();
};
}
applyVersionFilter(router, routePathMetadata, handler) {
const { versioningOptions } = routePathMetadata;
const version = this.routePathFactory.getVersion(routePathMetadata);
if (router === null || router === void 0 ? void 0 : router.applyVersionFilter) {
return router.applyVersionFilter(handler, version, versioningOptions);
}
/**
* TODO(v9): This was left for backward-compatibility and can be removed.
*/
return (req, res, next) => {
var _a, _b, _c, _d;
if (version === version_options_interface_1.VERSION_NEUTRAL) {
return handler(req, res, next);
}
// URL Versioning is done via the path, so the filter continues forward
if (versioningOptions.type === version_type_enum_1.VersioningType.URI) {
return handler(req, res, next);
}
// Custom Extractor Versioning Handler
if (versioningOptions.type === version_type_enum_1.VersioningType.CUSTOM) {
const extractedVersion = versioningOptions.extractor(req);
if (Array.isArray(version)) {
if (Array.isArray(extractedVersion) &&
version.filter(extractedVersion.includes).length) {
return handler(req, res, next);
}
else if ((0, shared_utils_1.isString)(extractedVersion) &&
version.includes(extractedVersion)) {
return handler(req, res, next);
}
}
else {
if (Array.isArray(extractedVersion) &&
extractedVersion.includes(version)) {
return handler(req, res, next);
}
else if ((0, shared_utils_1.isString)(extractedVersion) &&
version === extractedVersion) {
return handler(req, res, next);
}
}
}
// Media Type (Accept Header) Versioning Handler
if (versioningOptions.type === version_type_enum_1.VersioningType.MEDIA_TYPE) {
const MEDIA_TYPE_HEADER = 'Accept';
const acceptHeaderValue = ((_a = req.headers) === null || _a === void 0 ? void 0 : _a[MEDIA_TYPE_HEADER]) ||
((_b = req.headers) === null || _b === void 0 ? void 0 : _b[MEDIA_TYPE_HEADER.toLowerCase()]);
const acceptHeaderVersionParameter = acceptHeaderValue
? acceptHeaderValue.split(';')[1]
: undefined;
// No version was supplied
if ((0, shared_utils_1.isUndefined)(acceptHeaderVersionParameter)) {
if (Array.isArray(version)) {
if (version.includes(version_options_interface_1.VERSION_NEUTRAL)) {
return handler(req, res, next);
}
}
}
else {
const headerVersion = acceptHeaderVersionParameter.split(versioningOptions.key)[1];
if (Array.isArray(version)) {
if (version.includes(headerVersion)) {
return handler(req, res, next);
}
}
else if ((0, shared_utils_1.isString)(version)) {
if (version === headerVersion) {
return handler(req, res, next);
}
}
}
}
// Header Versioning Handler
else if (versioningOptions.type === version_type_enum_1.VersioningType.HEADER) {
const customHeaderVersionParameter = ((_c = req.headers) === null || _c === void 0 ? void 0 : _c[versioningOptions.header]) ||
((_d = req.headers) === null || _d === void 0 ? void 0 : _d[versioningOptions.header.toLowerCase()]);
// No version was supplied
if ((0, shared_utils_1.isUndefined)(customHeaderVersionParameter)) {
if (Array.isArray(version)) {
if (version.includes(version_options_interface_1.VERSION_NEUTRAL)) {
return handler(req, res, next);
}
}
}
else {
if (Array.isArray(version)) {
if (version.includes(customHeaderVersionParameter)) {
return handler(req, res, next);
}
}
else if ((0, shared_utils_1.isString)(version)) {
if (version === customHeaderVersionParameter) {
return handler(req, res, next);
}
}
}
}
if (!next) {
throw new exceptions_1.InternalServerErrorException('HTTP adapter does not support filtering on version');
}
return next();
};
}
createCallbackProxy(instance, callback, methodName, moduleRef, requestMethod, contextId = constants_2.STATIC_CONTEXT, inquirerId) {
const executionContext = this.executionContextCreator.create(instance, callback, methodName, moduleRef, requestMethod, contextId, inquirerId);
const exceptionFilter = this.exceptionsFilter.create(instance, callback, moduleRef, contextId, inquirerId);
return this.routerProxy.createProxy(executionContext, exceptionFilter);
}
createRequestScopedHandler(instanceWrapper, requestMethod, moduleRef, moduleKey, methodName) {
const { instance } = instanceWrapper;
const collection = moduleRef.controllers;
return async (req, res, next) => {
try {
const contextId = this.getContextId(req);
const contextInstance = await this.injector.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 = this.exceptionsFilter.create(instance, instance[methodName], moduleKey);
this.exceptionFiltersCache.set(instance[methodName], exceptionFilter);
}
const host = new execution_context_host_1.ExecutionContextHost([req, res, next]);
exceptionFilter.next(err, host);
}
};
}
getContextId(request) {
const contextId = context_id_factory_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;
}
}
exports.RouterExplorer = RouterExplorer;