MergeController.java

/*
 * Copyright (c) 2007-2026 MetaSolutions AB
 *
 * 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.
 */

package org.entrystore.rest.springboot.controller;

import io.swagger.v3.oas.annotations.Operation;
import jakarta.servlet.http.HttpServletRequest;
import lombok.RequiredArgsConstructor;
import org.entrystore.rest.springboot.service.MergeService;
import org.entrystore.rest.springboot.util.GraphUtil;
import org.entrystore.rest.springboot.util.HttpUtil;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestHeader;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequiredArgsConstructor
public class MergeController {

	private static final int MAX_REQUEST_SIZE = 10_485_760; // 10 MB

	private final MergeService mergeService;

	@PreAuthorize("hasRole('ADMIN')")
	@Operation(summary = "Merges RDF data into entries of a context")
	@PostMapping(path = "/{context-id}/merge")
	public void mergeRdfIntoContext(
			@PathVariable("context-id") String contextId,
			@RequestParam(required = false) String resourceId,
			@RequestParam(required = false) MediaType format,
			@RequestHeader(value = "Content-Type", required = false) String contentType,
			@RequestBody String body,
			HttpServletRequest request
	) {
		HttpUtil.checkRequestSize(request, MAX_REQUEST_SIZE);

		String mediaType = GraphUtil.validateRdfMediaType(
				HttpUtil.determineMediaType(format, contentType),
				HttpStatus.BAD_REQUEST
		);

		mergeService.mergeRdfIntoContext(contextId, body, mediaType, resourceId);
	}

}