@kuflow/kuflow-temporal-worker/src/encryption/worker/kuflow-encryption-activity-inbound-calls-interceptor.ts

Worker library used by KuFlow SDKs and Temporal.

/**
 * The MIT License
 * Copyright © 2021-present KuFlow S.L.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

import type {
  ActivityExecuteInput,
  ActivityInboundCallsInterceptor,
  ActivityInterceptors,
  ActivityInterceptorsFactory,
} from '@temporalio/worker'
import type { Next } from '@temporalio/workflow'

import { EncryptionWrapper, retrieveEncryptionState } from '../kuflow-encryption-instrumentation'

class KuFlowEncryptionActivityInboundCallsInterceptor implements ActivityInboundCallsInterceptor {
  public async execute(
    input: ActivityExecuteInput,
    next: Next<ActivityInboundCallsInterceptor, 'execute'>,
  ): Promise<unknown> {
    const output = await next(input)

    const encryptionState = retrieveEncryptionState(input.headers)

    return EncryptionWrapper.of(encryptionState, output)
  }
}

export const kuFlowEncryptionActivityInterceptorsFactory: ActivityInterceptorsFactory = (): ActivityInterceptors => {
  return {
    inbound: new KuFlowEncryptionActivityInboundCallsInterceptor(),
  }
}