com.ikanow.aleph2.data_import_manager.utils.BeanDiffUtils.java Source code

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Here is the source code for com.ikanow.aleph2.data_import_manager.utils.BeanDiffUtils.java

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/*******************************************************************************
 * Copyright 2015, The IKANOW Open Source Project.
 *
 * 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 com.ikanow.aleph2.data_import_manager.utils;

import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Optional;
import java.util.Set;

import com.fasterxml.jackson.databind.JsonNode;
import com.ikanow.aleph2.data_model.objects.data_import.BucketDiffBean;
import com.ikanow.aleph2.data_model.objects.data_import.DataBucketBean;
import com.ikanow.aleph2.data_model.utils.BeanTemplateUtils;

/** Utilities for creating a difference bean between old and new buckets
 * @author Caleb
 */
public class BeanDiffUtils {

    public static Optional<BucketDiffBean> createDiffBean(final DataBucketBean updated_bucket,
            final DataBucketBean original_bucket) {
        return Optional.of(BeanTemplateUtils.build(BucketDiffBean.class)
                .with(BucketDiffBean::diffs, createDataBucketBeanDiffs(updated_bucket, original_bucket))
                .with(BucketDiffBean::lib_diffs, createSharedLibraryDiffs(updated_bucket, original_bucket)).done()
                .get());
    }

    public static Map<String, Boolean> createDataBucketBeanDiffs(DataBucketBean updated_bucket,
            DataBucketBean original_bucket) {
        final JsonNode updated_bucket_jsonnode = BeanTemplateUtils.toJson(updated_bucket);
        final JsonNode original_bucket_jsonnode = BeanTemplateUtils.toJson(original_bucket);
        final Map<String, Boolean> diff = new HashMap<String, Boolean>();

        //this only reports back fields that are not null, so we have to run both directions
        original_bucket_jsonnode.fields().forEachRemaining(field -> {
            diff.put(field.getKey(), !(field.getValue().equals(updated_bucket_jsonnode.get(field.getKey()))));
        });
        updated_bucket_jsonnode.fields().forEachRemaining(field -> {
            //if the field wasn't already checked, it means it only exists here, don't bother don't expensive compares
            if (!diff.containsKey(field.getKey()))
                diff.put(field.getKey(), true);
        });

        return diff;
    }

    public static Set<String> createSharedLibraryDiffs(final DataBucketBean updated_bucket,
            final DataBucketBean original_bucket) {
        //TODO shared lib diff (or are we handling this in the shared library crud in CMDB)
        return new HashSet<String>();
    }
}