org.graylog2.rest.models.messages.responses.DecorationStats Maven / Gradle / Ivy

/*
 * Copyright (C) 2020 Graylog, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the Server Side Public License, version 1,
 * as published by MongoDB, Inc.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * Server Side Public License for more details.
 *
 * You should have received a copy of the Server Side Public License
 * along with this program. If not, see
 * .
 */
package org.graylog2.rest.models.messages.responses;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.auto.value.AutoValue;
import com.google.common.collect.Sets;
import org.graylog.autovalue.WithBeanGetter;

import java.util.Map;
import java.util.function.Function;
import java.util.stream.Collectors;

@AutoValue
@WithBeanGetter
@JsonAutoDetect
public abstract class DecorationStats {
    private static final String FIELD_ADDED_FIELDS = "added_fields";
    private static final String FIELD_CHANGED_FIELDS = "changed_fields";
    private static final String FIELD_REMOVED_FIELDS = "removed_fields";

    @JsonIgnore
    public abstract Map originalMessage();

    @JsonIgnore
    public abstract Map decoratedMessage();

    @SuppressWarnings("unused")
    @JsonProperty(FIELD_ADDED_FIELDS)
    public Map addedFields() {
        return Sets.difference(decoratedMessage().keySet(), originalMessage().keySet())
            .stream()
            .collect(Collectors.toMap(Function.identity(), key -> decoratedMessage().get(key)));
    }

    @SuppressWarnings("unused")
    @JsonProperty(FIELD_CHANGED_FIELDS)
    public Map changedFields() {
        return Sets.intersection(originalMessage().keySet(), decoratedMessage().keySet())
                .stream()
                .filter(key -> !originalMessage().get(key).equals(decoratedMessage().get(key)))
                .collect(Collectors.toMap(Function.identity(), key
                        -> ChangedField.builder().before(originalMessage().get(key)).after(decoratedMessage().get(key)).build()));
    }

    @SuppressWarnings("unused")
    @JsonProperty(FIELD_REMOVED_FIELDS)
    public Map removedFields() {
        return Sets.difference(originalMessage().keySet(), decoratedMessage().keySet())
            .stream()
            .collect(Collectors.toMap(Function.identity(), key -> originalMessage().get(key)));
    }

    public static DecorationStats create(Map originalMessage,
                                         Map decoratedMessage) {
        return new AutoValue_DecorationStats(originalMessage, decoratedMessage);
    }
}