dgx-spark-playbooks/nvidia/txt2kg/assets/frontend/app/api/stop-processing/route.ts

//
// SPDX-FileCopyrightText: Copyright (c) 1993-2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
//
// 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 { NextRequest, NextResponse } from 'next/server'

// Global flag to track if processing should be stopped
let shouldStopProcessing = false

// Function to check if processing should stop
export function getShouldStopProcessing(): boolean {
  return shouldStopProcessing
}

// Function to reset the stop flag
export function resetStopProcessing(): void {
  shouldStopProcessing = false
}

// Function to set the stop flag
export function setStopProcessing(): void {
  shouldStopProcessing = true
}

export async function POST(request: NextRequest) {
  try {
    console.log('Stop processing request received')
    
    // Set the global flag to stop processing
    shouldStopProcessing = true
    
    // You could also implement more sophisticated cancellation here
    // such as canceling ongoing HTTP requests, clearing queues, etc.
    
    return NextResponse.json({ 
      success: true, 
      message: 'Processing stop signal sent' 
    })
  } catch (error) {
    console.error('Error stopping processing:', error)
    return NextResponse.json(
      { error: 'Failed to stop processing' },
      { status: 500 }
    )
  }
}

export async function GET(request: NextRequest) {
  // Allow checking the current stop status
  return NextResponse.json({ 
    shouldStop: shouldStopProcessing 
  })
}