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/*
* Copyright © 2016-2017 European Support Limited
*
* 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.openecomp.core.tools.store;
import com.amdocs.zusammen.datatypes.Id;
import com.amdocs.zusammen.datatypes.Namespace;
import com.amdocs.zusammen.datatypes.SessionContext;
import com.amdocs.zusammen.datatypes.item.Info;
import com.amdocs.zusammen.datatypes.item.Relation;
import com.amdocs.zusammen.plugin.statestore.cassandra.dao.types.ElementEntityContext;
import com.amdocs.zusammen.utils.fileutils.json.JsonUtil;
import com.datastax.driver.core.ResultSet;
import com.datastax.driver.core.Row;
import com.datastax.driver.mapping.annotations.Accessor;
import com.datastax.driver.mapping.annotations.Param;
import com.datastax.driver.mapping.annotations.Query;
import com.google.gson.reflect.TypeToken;
import org.openecomp.core.nosqldb.factory.NoSqlDbFactory;
import org.openecomp.core.zusammen.plugin.dao.types.ElementEntity;
import java.lang.reflect.Type;
import java.nio.ByteBuffer;
import java.util.*;
import java.util.stream.Collectors;
public class CassandraElementRepository {
public Collection<ElementEntity> list(SessionContext context,
ElementEntityContext elementContext) {
Set<String> elementIds = getVersionElementIds(context, elementContext);
return elementIds.stream()
.map(elementId -> get(context, elementContext, new ElementEntity(new Id(elementId))).get())
.filter(Objects::nonNull)
.collect(Collectors.toList());
}
public void update(SessionContext context, ElementEntityContext elementContext,
ElementEntity element) {
updateElement(context, elementContext, element);
}
public Optional<ElementEntity> get(SessionContext context, ElementEntityContext elementContext,
ElementEntity element) {
Row row = getElementAccessor(context).get(
elementContext.getSpace(),
elementContext.getItemId().toString(),
getVersionId(elementContext),
element.getId().toString()).one();
return row == null ? Optional.empty() : Optional.of(getElementEntity(element, row));
}
private String getVersionId(ElementEntityContext elementContext) {
return elementContext.getChangeRef() == null
? elementContext.getVersionId().toString()
: elementContext.getChangeRef();
}
private ElementAccessor getElementAccessor(SessionContext context) {
return NoSqlDbFactory.getInstance().createInterface().getMappingManager().createAccessor
(ElementAccessor.class);
}
private VersionElementsAccessor getVersionElementsAccessor() {
return NoSqlDbFactory.getInstance().createInterface().getMappingManager().createAccessor
(VersionElementsAccessor.class);
}
private void updateElement(SessionContext context, ElementEntityContext elementContext,
ElementEntity element) {
if (elementContext.getChangeRef() == null) {
getElementAccessor(context).update(
JsonUtil.object2Json(element.getInfo()),
JsonUtil.object2Json(element.getRelations()),
element.getData(),
element.getSearchableData(),
element.getVisualization(),
elementContext.getSpace(),
elementContext.getItemId().toString(),
elementContext.getVersionId().toString(),
element.getId().toString());
} else {
getElementAccessor(context).update(
JsonUtil.object2Json(element.getInfo()),
JsonUtil.object2Json(element.getRelations()),
element.getData(),
element.getSearchableData(),
element.getVisualization(),
elementContext.getSpace(),
elementContext.getItemId().toString(),
elementContext.getChangeRef(),
element.getId().toString());
}
}
private ElementEntity getElementEntity(ElementEntity element, Row row) {
element.setNamespace(getNamespace(row.getString(ElementField.NAMESPACE)));
element.setParentId(new Id(row.getString(ElementField.PARENT_ID)));
element.setInfo(json2Object(row.getString(ElementField.INFO), Info.class));
element.setRelations(
json2Object(row.getString(ElementField.RELATIONS), new TypeToken<ArrayList<Relation>>() {
}.getType()));
element.setData(row.getBytes(ElementField.DATA));
element.setSearchableData(row.getBytes(ElementField.SEARCHABLE_DATA));
element.setVisualization(row.getBytes(ElementField.VISUALIZATION));
element.setSubElementIds(row.getSet(ElementField.SUB_ELEMENT_IDS, String.class)
.stream().map(Id::new).collect(Collectors.toSet()));
return element;
}
private Namespace getNamespace(String namespaceStr) {
Namespace namespace = new Namespace();
if (namespaceStr != null) {
namespace.setValue(namespaceStr);
}
return namespace;
}
private static <T> T json2Object(String json, Type typeOfT) {
return json == null ? null : JsonUtil.json2Object(json, typeOfT);
}
private Set<String> getVersionElementIds(SessionContext context,
ElementEntityContext elementContext) {
Row row = getVersionElementsAccessor().get(
elementContext.getSpace(),
elementContext.getItemId().toString(),
getVersionId(elementContext)).one();
return row == null
? new HashSet<>()
: row.getSet(CassandraElementRepository.VersionElementsField.ELEMENT_IDS, String.class);
}
/*
CREATE TABLE IF NOT EXISTS element_namespace (
space text,
item_id text,
element_id text,
namespace text,
PRIMARY KEY (( space, item_id, element_id ))
);
*/
@Accessor
interface ElementNamespaceAccessor {
@Query(
"UPDATE element_namespace SET namespace=:ns " +
"WHERE space=:space AND item_id=:item AND element_id=:id ")
void create(@Param("space") String space,
@Param("item") String itemId,
@Param("id") String elementId,
@Param("ns") String namespace);
}
/*
CREATE TABLE IF NOT EXISTS element (
space text,
item_id text,
version_id text,
element_id text,
parent_id text,
namespace text,
info text,
relations text,
data blob,
searchable_data blob,
visualization blob,
sub_element_ids set<text>,
PRIMARY KEY (( space, item_id, version_id, element_id ))
);
*/
@Accessor
interface ElementAccessor {
@Query(
"UPDATE zusammen_dox.element SET parent_id=:parentId, namespace=:ns, info=:info, " +
"relations=:rels, " +
"data=:data, searchable_data=:searchableData, visualization=:visualization, " +
"sub_element_ids=sub_element_ids+:subs " +
"WHERE space=:space AND item_id=:item AND version_id=:ver AND element_id=:id ")
void create(@Param("space") String space,
@Param("item") String itemId,
@Param("ver") String versionId,
@Param("id") String elementId,
@Param("parentId") String parentElementId,
@Param("ns") String namespace,
@Param("info") String info,
@Param("rels") String relations,
@Param("data") ByteBuffer data,
@Param("searchableData") ByteBuffer searchableData,
@Param("visualization") ByteBuffer visualization,
@Param("subs") Set<String> subElementIds);
@Query("UPDATE zusammen_dox.element SET info=?, relations=?, data=?, searchable_data=?, " +
"visualization=?" +
" WHERE space=? AND item_id=? AND version_id=? AND element_id=? ")
void update(String info, String relations, ByteBuffer data, ByteBuffer searchableData,
ByteBuffer visualization, String space, String itemId, String versionId,
String elementId);
@Query("SELECT parent_id, namespace, info, relations, data, searchable_data, visualization, " +
"sub_element_ids FROM zusammen_dox.element " +
"WHERE space=? AND item_id=? AND version_id=? AND element_id=? ")
ResultSet get(String space, String itemId, String versionId, String elementId);
}
private static final class ElementField {
private static final String NAMESPACE = "namespace";
private static final String PARENT_ID = "parent_id";
private static final String INFO = "info";
private static final String RELATIONS = "relations";
private static final String DATA = "data";
private static final String SEARCHABLE_DATA = "searchable_data";
private static final String VISUALIZATION = "visualization";
private static final String SUB_ELEMENT_IDS = "sub_element_ids";
}
/*
CREATE TABLE IF NOT EXISTS version_elements (
space text,
item_id text,
version_id text,
element_ids set<text>,
PRIMARY KEY (( space, item_id, version_id ))
);
*/
@Accessor
interface VersionElementsAccessor {
@Query("SELECT element_ids FROM zusammen_dox.version_elements WHERE space=? AND item_id=? AND version_id=?")
ResultSet get(String space, String itemId, String versionId);
}
private static final class VersionElementsField {
private static final String ELEMENT_IDS = "element_ids";
}
}
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