import { EXCEPTION_FILTERS_METADATA } from '@nestjs/common/constants';
import { Controller } from '@nestjs/common/interfaces/controllers/controller.interface';
import { isEmpty } from '@nestjs/common/utils/shared.utils';
import { ApplicationConfig } from '@nestjs/core/application-config';
import { BaseExceptionFilterContext } from '@nestjs/core/exceptions/base-exception-filter-context';
import { NestContainer } from '@nestjs/core/injector/container';
import { Observable } from 'rxjs';
import { RpcExceptionsHandler } from '../exceptions/rpc-exceptions-handler';
export class ExceptionFiltersContext extends BaseExceptionFilterContext {
constructor(
container: NestContainer,
private readonly config: ApplicationConfig,
) {
super(container);
}
public create(
instance: Controller,
callback: (data) => Observable<any>,
module: string,
): RpcExceptionsHandler {
this.moduleContext = module;
const exceptionHandler = new RpcExceptionsHandler();
const filters = this.createContext(
instance,
callback,
EXCEPTION_FILTERS_METADATA,
);
if (isEmpty(filters)) {
return exceptionHandler;
}
exceptionHandler.setCustomFilters(filters.reverse());
return exceptionHandler;
}
public getGlobalMetadata<T extends any[]>(): T {
return this.config.getGlobalFilters() as T;
}
}
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