ShortFilterProcessor.java

/*
 * Copyright 2021 Global Crop Diversity Trust
 *
 * 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.genesys.server.service.worker;

import java.io.IOException;

import org.genesys.blocks.model.filters.SuperModelFilter;
import org.genesys.server.model.ShortFilter;
import org.genesys.server.service.ShortFilterService;
import org.genesys.server.service.ShortFilterService.FilterInfo;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import com.fasterxml.jackson.databind.JsonMappingException;

/**
 * The Class ShortFilterProcessor.
 */
@Component
public class ShortFilterProcessor {
	private static final Logger LOG = LoggerFactory.getLogger(ShortFilterProcessor.class);

	@Autowired
	protected ShortFilterService shortFilterService;

	public <T extends SuperModelFilter<T, ?>> FilterInfo<T> processFilter(final String filterCode, final T filter, Class<T> filterType) throws IOException {
		Throwable lastException = null;

		for (int i = 5; i >=0; i--) {
			try {
				return doProcessFilter(filterCode, filter, filterType);
			} catch (IOException e) {
				throw e;
			} catch (Throwable e) {
				LOG.warn("Error processing filter: {}", e.getMessage());
				lastException = e;
			}
		}

		throw new IOException("Failed to process filter: " + lastException.getMessage(), lastException);
	}

	private <T extends SuperModelFilter<T, ?>> FilterInfo<T> doProcessFilter(final String filterCode, final T filter, Class<T> filterType) throws IOException {
		FilterInfo<T> processedFilter = new FilterInfo<>();

		if (filterCode != null) {
			try {
				processedFilter.filter = shortFilterService.filterByCode(filterCode, filterType);
				processedFilter.filterCode = filterCode;

			} catch (JsonMappingException e) {
				LOG.warn("Stored filter does not match target {}", filterType);

				ShortFilter shortFilter = shortFilterService.loadByCode(filterCode == null ? "" : filterCode);
				// Reads recognized properties
				T updatedFilter = shortFilterService.readFilter(shortFilter.getJson(), filterType);

				processedFilter.filter = updatedFilter;
				processedFilter.filterCode = shortFilterService.getCode(updatedFilter);
			}
		} else {
			var normalizedFilter = shortFilterService.normalizeFilter(filter, filterType);
			processedFilter.filter = normalizedFilter;
			processedFilter.filterCode = shortFilterService.getCode(normalizedFilter);
		}

		return processedFilter;
	}

	public <T extends SuperModelFilter<T,?>> T  filterByCode(String filterCode, Class<T> clazz) throws IOException {
		return shortFilterService.filterByCode(filterCode, clazz);
	}

	public <T extends SuperModelFilter<T, ?>> T normalizeFilter(T filter, Class<T> filterType) throws IOException {
		return shortFilterService.normalizeFilter(filter, filterType);
	}
}