package com.thinkbiganalytics.metadata.modeshape.datasource;
/*-
* #%L
* kylo-metadata-modeshape
* %%
* Copyright (C) 2017 ThinkBig Analytics
* %%
* 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.
* #L%
*/
import com.thinkbiganalytics.metadata.api.datasource.DatasourceDetails;
import com.thinkbiganalytics.metadata.api.datasource.JdbcDatasourceDetails;
import com.thinkbiganalytics.metadata.api.datasource.UserDatasource;
import com.thinkbiganalytics.metadata.modeshape.MetadataRepositoryException;
import com.thinkbiganalytics.metadata.modeshape.datasource.security.JcrDatasourceAllowedActions;
import com.thinkbiganalytics.metadata.modeshape.security.action.JcrAllowedActions;
import com.thinkbiganalytics.metadata.modeshape.security.mixin.AccessControlledMixin;
import com.thinkbiganalytics.metadata.modeshape.support.JcrUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.HashMap;
import java.util.Map;
import java.util.Optional;
import javax.annotation.Nonnull;
import javax.jcr.AccessDeniedException;
import javax.jcr.Node;
import javax.jcr.PathNotFoundException;
import javax.jcr.RepositoryException;
/**
* A {@code UserDatasource} that is stored in JRC.
*/
public class JcrUserDatasource extends JcrDatasource implements UserDatasource, AccessControlledMixin {
private static final Logger log = LoggerFactory.getLogger(JcrUserDatasource.class);
private static final long serialVersionUID = -6114070693323660125L;
/**
* JCR node type
*/
public static String NODE_TYPE = "tba:userDatasource";
/**
* Sub-node under {@code datasources} node for {@code userDatasource} nodes
*/
@SuppressWarnings("unused")
public static String PATH_NAME = "user";
/**
* Name of the details attribute
*/
static final String DETAILS = "tba:details";
/**
* Mapping from domain type to JCR type
*/
private static final Map<Class<? extends DatasourceDetails>, Class<? extends JcrDatasourceDetails>> DETAILS_DOMAIN_TYPES_MAP = new HashMap<>();
static {
DETAILS_DOMAIN_TYPES_MAP.put(JdbcDatasourceDetails.class, JcrJdbcDatasourceDetails.class);
}
/**
* Mapping from JCR type name to JCR type class
*/
private static final Map<String, Class<? extends JcrDatasourceDetails>> DETAILS_NODE_TYPES_MAP = new HashMap<>();
static {
DETAILS_NODE_TYPES_MAP.put(JcrJdbcDatasourceDetails.NODE_TYPE, JcrJdbcDatasourceDetails.class);
}
/**
* Name of the type attribute
*/
private static final String TYPE = "tba:type";
@Nonnull
static Class<? extends JcrDatasourceDetails> resolveDetailsClass(@Nonnull final Class<? extends DatasourceDetails> domainClass) {
return DETAILS_DOMAIN_TYPES_MAP.getOrDefault(domainClass, JcrDatasourceDetails.class);
}
/**
* Details child node.
*/
private JcrDatasourceDetails details;
/**
* Constructs a {@code JcrUserDatasource} with the specified JCR node.
*
* @param node the JCR node
*/
public JcrUserDatasource(@Nonnull final Node node) {
super(node);
}
@Nonnull
public Optional<? extends JcrDatasourceDetails> getDetails() {
if (details == null && JcrUtil.hasNode(getNode(), DETAILS)) {
details = getDetailsNode()
.map(this::toDetailsObject)
.orElse(null);
}
return Optional.ofNullable(details);
}
@Override
public Class<? extends JcrAllowedActions> getJcrAllowedActionsType() {
return JcrDatasourceAllowedActions.class;
}
@Override
public void setName(@Nonnull final String name) {
setProperty(TITLE, name);
}
@Nonnull
@Override
public String getType() {
return getProperty(TYPE, String.class);
}
@Override
public void setType(@Nonnull final String type) {
setProperty(TYPE, type);
}
@Nonnull
private Optional<Node> getDetailsNode() {
try {
return Optional.ofNullable(getNode().getNode(DETAILS));
} catch (final AccessDeniedException e) {
log.debug("Access denied to details node for user data source: ", getId(), e);
return Optional.empty();
} catch (final PathNotFoundException e) {
return Optional.empty();
} catch (final RepositoryException e) {
throw new MetadataRepositoryException("Failure while finding details node for user data source: " + getId(), e);
}
}
@Nonnull
private JcrDatasourceDetails toDetailsObject(@Nonnull final Node detailsNode) {
// Determine type class
final Class<? extends JcrDatasourceDetails> typeClass;
try {
final String typeName = detailsNode.getPrimaryNodeType().getName();
typeClass = DETAILS_NODE_TYPES_MAP.getOrDefault(typeName, JcrDatasourceDetails.class);
} catch (final RepositoryException e) {
throw new MetadataRepositoryException("Failed to determine type of node: " + detailsNode, e);
}
// Convert node to object
return JcrUtil.getJcrObject(detailsNode, typeClass);
}
}