introduce the logging module

src/logging/logging.controller.ts

@@ -0,0 +1,110 @@
+import {
+  Controller,
+  Get,
+  Delete,
+  Query,
+  HttpException,
+  HttpStatus,
+} from '@nestjs/common';
+import { ApiQuery, ApiResponse } from '@nestjs/swagger';
+import { LogEntryDto } from './dto/logentry.dto';
+import { LoggingService } from './logging.service';
+import { LogEntry } from './models/logentry.model';
+
+@Controller('logging')
+export class LoggingController {
+  constructor(private readonly loggingService: LoggingService) {}
+
+  private static logEntryToDto(entry: LogEntry): LogEntryDto {
+    return {
+      component: entry.component,
+      level: entry.level,
+      timestamp: entry.timestamp,
+      message: entry.message,
+    };
+  }
+
+  @Get('/all')
+  @ApiResponse({
+    status: 201,
+    description: 'All log entries',
+    type: [LogEntryDto],
+  })
+  @ApiResponse({
+    status: 404,
+    description: 'No messages found',
+  })
+  async allMessages(): Promise<LogEntryDto[]> {
+    return this.loggingService.allMessages().then((response) => {
+      if (response === null) {
+        throw new HttpException(
+          'Unable to find the log messages',
+          HttpStatus.NOT_FOUND,
+        );
+      }
+
+      const messages: LogEntryDto[] = [];
+      response.forEach((entry) =>
+        messages.push(LoggingController.logEntryToDto(entry)),
+      );
+      return messages;
+    });
+  }
+
+  @Get('/component')
+  @ApiQuery({
+    name: 'component',
+    description: 'The component filter for the messages',
+    type: String,
+  })
+  @ApiResponse({
+    status: 201,
+    description: 'All log entries',
+    type: [LogEntryDto],
+  })
+  @ApiResponse({
+    status: 404,
+    description: 'No messages found',
+  })
+  async componentMessages(
+    @Query('component') component: string,
+  ): Promise<LogEntryDto[]> {
+    return this.loggingService.componentMessages(component).then((response) => {
+      if (response === null) {
+        throw new HttpException(
+          'Unable to find the log messages',
+          HttpStatus.NOT_FOUND,
+        );
+      }
+
+      const messages: LogEntryDto[] = [];
+      response.forEach((entry) =>
+        messages.push(LoggingController.logEntryToDto(entry)),
+      );
+      return messages;
+    });
+  }
+
+  @Delete('/deleteAll')
+  @ApiResponse({
+    status: 200,
+    description: 'All log entries are deleted',
+  })
+  async deleteAll(): Promise<void> {
+    return this.loggingService.deleteAllMessages();
+  }
+
+  @Delete('/deleteComponent')
+  @ApiQuery({
+    name: 'component',
+    description: 'The component filter for the messages',
+    type: String,
+  })
+  @ApiResponse({
+    status: 200,
+    description: 'All log entries are deleted',
+  })
+  async deleteComponent(@Query('component') component: string): Promise<void> {
+    return this.loggingService.deleteComponentMessages(component);
+  }
+}