org.graylog2.contentpacks.facades.UrlWhitelistFacade Maven / Gradle / Ivy

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/*
 * 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.contentpacks.facades;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.collect.ImmutableSet;
import org.graylog2.contentpacks.EntityDescriptorIds;
import org.graylog2.contentpacks.model.ModelId;
import org.graylog2.contentpacks.model.ModelType;
import org.graylog2.contentpacks.model.constraints.GraylogVersionConstraint;
import org.graylog2.contentpacks.model.entities.Entity;
import org.graylog2.contentpacks.model.entities.EntityDescriptor;
import org.graylog2.contentpacks.model.entities.EntityExcerpt;
import org.graylog2.contentpacks.model.entities.EntityV1;
import org.graylog2.contentpacks.model.entities.NativeEntity;
import org.graylog2.contentpacks.model.entities.NativeEntityDescriptor;
import org.graylog2.contentpacks.model.entities.references.ValueReference;
import org.graylog2.plugin.Version;
import org.graylog2.system.urlwhitelist.UrlWhitelistService;
import org.graylog2.system.urlwhitelist.WhitelistEntry;

import javax.inject.Inject;
import java.util.Map;
import java.util.Optional;
import java.util.Set;
import java.util.stream.Collectors;

import static org.graylog2.contentpacks.model.ModelTypes.URL_WHITELIST_ENTRY_V1;

public class UrlWhitelistFacade implements EntityFacade {
    public static final ModelType TYPE_V1 = URL_WHITELIST_ENTRY_V1;

    private final ObjectMapper objectMapper;
    private final UrlWhitelistService urlWhitelistService;

    @Inject
    public UrlWhitelistFacade(ObjectMapper objectMapper, UrlWhitelistService urlWhitelistService) {
        this.objectMapper = objectMapper;
        this.urlWhitelistService = urlWhitelistService;
    }

    @Override
    public Optional exportEntity(EntityDescriptor entityDescriptor, EntityDescriptorIds entityDescriptorIds) {
        final ModelId modelId = entityDescriptor.id();

        return urlWhitelistService.getEntry(modelId.id())
                .map(entry -> EntityV1.builder()
                        .id(ModelId.of(entityDescriptorIds.getOrThrow(entry.id(), URL_WHITELIST_ENTRY_V1)))
                        .type(URL_WHITELIST_ENTRY_V1)
                        .data(objectMapper.convertValue(entry, JsonNode.class))
                        .constraints(ImmutableSet.of(GraylogVersionConstraint.of(Version.from(3, 1, 3))))
                        .build());
    }

    @Override
    public NativeEntity createNativeEntity(Entity entity, Map parameters,
            Map nativeEntities, String username) {

        if (!(entity instanceof EntityV1)) {
            throw new IllegalArgumentException("Unsupported entity version: " + entity.getClass());
        }

        final WhitelistEntry whitelistEntry =
                objectMapper.convertValue(((EntityV1) entity).data(), WhitelistEntry.class);

        urlWhitelistService.addEntry(whitelistEntry);

        return NativeEntity.create(entity.id(), whitelistEntry.id(), TYPE_V1, createTitle(whitelistEntry),
                whitelistEntry);
    }

    @Override
    public Optional> loadNativeEntity(NativeEntityDescriptor nativeEntityDescriptor) {
        final ModelId modelId = nativeEntityDescriptor.id();
        return urlWhitelistService.getEntry(modelId.id())
                .map(entry -> NativeEntity.create(nativeEntityDescriptor, entry));
    }

    @Override
    public void delete(WhitelistEntry nativeEntity) {
        urlWhitelistService.removeEntry(nativeEntity.id());
    }

    @Override
    public EntityExcerpt createExcerpt(WhitelistEntry whitelistEntry) {
        return EntityExcerpt.builder()
                .id(ModelId.of(whitelistEntry.id()))
                .type(URL_WHITELIST_ENTRY_V1)
                .title(createTitle(whitelistEntry))
                .build();
    }

    @Override
    public Set listEntityExcerpts() {
        return urlWhitelistService.getWhitelist()
                .entries()
                .stream()
                .map(this::createExcerpt)
                .collect(Collectors.toSet());
    }

    private String createTitle(WhitelistEntry entry) {
        return entry.title() + " [" + entry.value() + "]";
    }
}