All files / src/handlers/objects UpdateTargetHandler.ts

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/* 
  Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
  
  Licensed under the Apache License, Version 2.0 (the "License").
  You may not use this file except in compliance with the License.
  You may obtain a copy of the License at
  
      http://www.apache.org/licenses/LICENSE-2.0
  
  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
*/
 
import { APIGatewayProxyEvent, Context } from 'aws-lambda';
import { AuditChangeResult, FlowAudit, FlowObject, Logger, LoggerFactory } from 'shared_types';
import { AsyncRequestHandler } from 'src/common/AsyncRequestHandler';
import RuleConfigError from 'src/common/RuleConfigError';
import { ServerlessResponse } from 'src/common/ServerlessResponse';
import { AuditsDataSourceService } from 'src/service/AuditsDataSourceService';
import { ObjectsDataSourceService } from 'src/service/ObjectsDataSourceService';
import { OpaPolicyService } from 'src/service/OpaPolicyService';
import { FlowObjectInput } from 'src/types/FlowTarget';
import { CreateObjectInputValidator } from 'src/validators/CreateObjectInputValidator';
import { inject, injectable } from 'tsyringe';
 
 
export type ConfigurationEvaluationTriggerEvent = {
    ruleBundleId: string,
}
/**
 * @api {put} /objects Update an object
 * @apiGroup Objects
 * @apiDescription Update an object referencing a cloud resource or fixed resource
 * @apiVersion 1.0.0
 *  @apiExample {curl} CURL Example:
 curl --location --request PUT 'https://<rest_api_id>.execute-api.ap-southeast-2.amazonaws.com/prod/objects/Onprem_Server' --data-raw '{
    "value": "172.16.1.20",
    "type": "Address"
}'
* @apiSuccess (Success 200) Target updated
* @apiParam {String[1..100]="[ 0-9a-zA-Z_-]+"}  id The object's id. id The object's id.
* @apiParam {string} type The object's type 'Address' | 'Cidr' | 'Arn' | 'Tagged'
* @apiParam {value}  value The object's value, can a an ARN or A tag list \
* e.g ARN arn:aws:ec2:ap-southeast-2:<account_number>:subnet/subnet-123
* e.g  A tag list  { \
*          "value": "1", \
*          "key": "FF_TEST"\
*        }
* @apiError (Error 400) UnsupportedObjectType Supported object type 'SinglePort' , 'Any' , 'PortRange'
* @apiError (Error 400) InvalidObjectValue When request contains unsupported object value, supported 'Address' | 'Cidr' | 'Arn' | 'Tagged'; 
* @apiError (Error 400) BadRequest NONE_COMPLIANT due to violate OPA policy
* @apiError (Error 502) Time out
* @apiError (Error 503) Internal error
* 
* @apiSuccessExample Success-Response: 
*      HTTP/1.1 200 OK
*  {
    "object": {
        "id": "Onprem_Server",
        "type": "Address",
        "value": "172.16.1.20",
        "createdBy": "arn:aws:sts::1000000:assumed-role/ObjectExtensionSecOpsAdminRole/DeviceClient",
        "lastUpdated": "2021-09-15T06:39:38.997Z"
    }
}
* 
* @apiSampleRequest off
*/
@injectable()
export class UpdateTargetHandler
    implements AsyncRequestHandler<APIGatewayProxyEvent, ServerlessResponse> {
    private readonly logger: Logger;
 
    constructor(@inject('LoggerFactory') loggerFactory: LoggerFactory,
        @inject('ObjectsDataSourceService') private objectsDataSourceService: ObjectsDataSourceService,
        @inject('AuditsDataSourceService') private auditsDataSourceService: AuditsDataSourceService,
        @inject('CreateObjectInputValidator') private validator: CreateObjectInputValidator,
        @inject('OpaPolicyService') private opaPolicyService: OpaPolicyService
    ) {
        this.logger = loggerFactory.getLogger('UpdateObjectConfigHandler');
    }
 
    async handle(
        event: APIGatewayProxyEvent,
        // eslint-disable-next-line @typescript-eslint/no-unused-vars
        _context: Context
    ): Promise<ServerlessResponse> {
        this.logger.debug('Processing update target request');
        const requestorIdentity = event.requestContext.identity?.userArn ?? 'Unknown';
        if (!event.pathParameters) { return ServerlessResponse.ofError(new RuleConfigError(undefined, 400, false)); }
        const targetId = event.pathParameters['id'];
        if (!targetId) {
            return ServerlessResponse.ofError(
                new RuleConfigError(
                    'Target id path parameter cannot be null or empty.',
                    400,
                    false
                )
            );
        }
 
        const input: FlowObjectInput = await this.validator.parseAndValidate(event);
 
        if (input.id != targetId) {
            return ServerlessResponse.ofError(
                new RuleConfigError(
                    'Target id not matching the the id in path parameter',
                    400,
                    false
                )
            );
        }
 
        const accountId = event.requestContext.accountId ?? '100000';
        this.logger.debug('sending to opa')
        try {
            const response = await this.opaPolicyService.requestDecision({
                "requester": {
                    "arn": requestorIdentity,
                    "accountId": accountId
                }
            }, { object: input }, 'UPDATE')
 
            this.logger.info(' opa decision response', response)
            if (response.status === 'NON_COMPLIANT') {
                return ServerlessResponse.ofObject(400, { message: response.reasonPhrases });
            }
        } catch (e) {
            this.logger.error('opa error', e);
            return ServerlessResponse.ofObject(500, { message: `Unable to determine user accessibility, ${e}` });
        }
 
        this.logger.debug('Processing update rule target request', input);
        let currentObj;
        try {
            currentObj = await this.objectsDataSourceService.getObjectBy(input.id);
            if (!currentObj) {
                return ServerlessResponse.ofObject(404,
                    `Requested target does not exists ${input.id}`
                );
            }
            
            const objectToBeUpdated: FlowObjectInput = {
                id: input.id,
                type: input.type,
                value: input.value,
            }
 
            const objectId = await this.objectsDataSourceService.updateObject(objectToBeUpdated);
            await this.auditEntryForUpdate(requestorIdentity, 'SUCCESS', currentObj, input, [])
            return ServerlessResponse.ofObject(200, { objectId: objectId });
        } catch (e) {
            await this.auditEntryForUpdate(requestorIdentity, 'REJECTED', currentObj, input, [e.message])
            this.logger.error('Error while creating rule object', e, input);
            return ServerlessResponse.ofObject(500, { message: 'Error while creating rule object' });
        }
    }
 
    async auditEntryForUpdate(requestorIdentity: string, status: AuditChangeResult, originalObj: FlowObject | undefined, object: FlowObject, reasons?: string[]): Promise<FlowAudit> {
        return await this.auditsDataSourceService.createAuditEntry({
            requestedBy: requestorIdentity,
            requestedTimestamp: new Date().toISOString(),
            requestedChange: {
                type: 'UPDATE', //CREATE/UPDATE/DELETE
                changeContent: {
                    originalObject: originalObj,
                    requestedObject: object,
                },
                changeResult: status, // SUCCESS, REJECTED
                reasonPhrase: reasons ?? []
            }
        })
    }
}