/*
* Copyright (c) 2016 Cisco Systems, Inc. and others. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
package org.opendaylight.restconf.utils.parser;
import com.google.common.base.Optional;
import com.google.common.base.Splitter;
import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;
import java.text.ParseException;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import org.opendaylight.controller.md.sal.dom.api.DOMMountPoint;
import org.opendaylight.controller.md.sal.dom.api.DOMMountPointService;
import org.opendaylight.netconf.md.sal.rest.schema.SchemaExportContext;
import org.opendaylight.netconf.sal.restconf.impl.InstanceIdentifierContext;
import org.opendaylight.netconf.sal.restconf.impl.RestconfDocumentedException;
import org.opendaylight.netconf.sal.restconf.impl.RestconfError.ErrorTag;
import org.opendaylight.netconf.sal.restconf.impl.RestconfError.ErrorType;
import org.opendaylight.restconf.parser.IdentifierCodec;
import org.opendaylight.restconf.utils.RestconfConstants;
import org.opendaylight.restconf.utils.validation.RestconfValidation;
import org.opendaylight.yangtools.yang.common.QName;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
import org.opendaylight.yangtools.yang.data.util.DataSchemaContextNode;
import org.opendaylight.yangtools.yang.data.util.DataSchemaContextTree;
import org.opendaylight.yangtools.yang.model.api.Module;
import org.opendaylight.yangtools.yang.model.api.SchemaContext;
import org.opendaylight.yangtools.yang.model.api.SchemaNode;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Util class for parsing identifier
*
*/
public final class ParserIdentifier {
private static final Logger LOG = LoggerFactory.getLogger(ParserIdentifier.class);
private ParserIdentifier() {
throw new UnsupportedOperationException("Util class.");
}
/**
* Make {@link InstanceIdentifierContext} from {@link String} identifier
*
* For identifiers of data NOT behind mount points returned
* {@link InstanceIdentifierContext} is prepared with {@code null} reference of {@link DOMMountPoint} and with
* controller's {@link SchemaContext}.
*
* For identifiers of data behind mount points returned
* {@link InstanceIdentifierContext} is prepared with reference of {@link DOMMountPoint} and its
* own {@link SchemaContext}.
*
* @param identifier
* - path identifier
* @param schemaContext
* - controller schema context
* @param mountPointService
* - mount point service
* @return {@link InstanceIdentifierContext}
*/
public static InstanceIdentifierContext> toInstanceIdentifier(
final String identifier,
final SchemaContext schemaContext,
final Optional mountPointService) {
if (identifier != null && identifier.contains(RestconfConstants.MOUNT)) {
if (!mountPointService.isPresent()) {
throw new RestconfDocumentedException("Mount point service is not available");
}
final Iterator pathsIt = Splitter.on("/" + RestconfConstants.MOUNT).split(identifier).iterator();
final String mountPointId = pathsIt.next();
final YangInstanceIdentifier mountYangInstanceIdentifier = IdentifierCodec.deserialize(
mountPointId, schemaContext);
final Optional mountPoint = mountPointService.get().getMountPoint(mountYangInstanceIdentifier);
if (!mountPoint.isPresent()) {
throw new RestconfDocumentedException(
"Mount point does not exist.", ErrorType.PROTOCOL, ErrorTag.DATA_MISSING);
}
final String pathId = pathsIt.next().replaceFirst("/", "");
final YangInstanceIdentifier pathYangInstanceIdentifier = IdentifierCodec.deserialize(
pathId, mountPoint.get().getSchemaContext());
final DataSchemaContextNode> child = DataSchemaContextTree.from(
mountPoint.get().getSchemaContext()).getChild(pathYangInstanceIdentifier);
return new InstanceIdentifierContext(
pathYangInstanceIdentifier, child.getDataSchemaNode(), mountPoint.get(),
mountPoint.get().getSchemaContext());
} else {
final YangInstanceIdentifier deserialize = IdentifierCodec.deserialize(identifier, schemaContext);
final DataSchemaContextNode> child = DataSchemaContextTree.from(schemaContext).getChild(deserialize);
return new InstanceIdentifierContext(
deserialize, child.getDataSchemaNode(), null, schemaContext);
}
}
/**
* Make {@link String} from {@link YangInstanceIdentifier}
*
* @param instanceIdentifier
* @param schemaContext
* @return
*/
public static String stringFromYangInstanceIdentifier(final YangInstanceIdentifier instanceIdentifier,
final SchemaContext schemaContext) {
return IdentifierCodec.serialize(instanceIdentifier, schemaContext);
}
/**
* Make a {@link QName} from identifier
*
* @param identifier
* - path parameter
* @return {@link QName}
*/
public static QName makeQNameFromIdentifier(final String identifier) {
// check if more than one slash is not used as path separator
if (identifier.contains(
String.valueOf(RestconfConstants.SLASH).concat(String.valueOf(RestconfConstants.SLASH)))) {
LOG.debug("URI has bad format. It should be \'moduleName/yyyy-MM-dd\' " + identifier);
throw new RestconfDocumentedException(
"URI has bad format. End of URI should be in format \'moduleName/yyyy-MM-dd\'", ErrorType.PROTOCOL,
ErrorTag.INVALID_VALUE);
}
final int mountIndex = identifier.indexOf(RestconfConstants.MOUNT);
String moduleNameAndRevision = "";
if (mountIndex >= 0) {
moduleNameAndRevision = identifier.substring(mountIndex + RestconfConstants.MOUNT.length())
.replaceFirst(String.valueOf(RestconfConstants.SLASH), "");
} else {
moduleNameAndRevision = identifier;
}
final Splitter splitter = Splitter.on(RestconfConstants.SLASH);
final Iterable split = splitter.split(moduleNameAndRevision);
final List pathArgs = Lists.newArrayList(split);
if (pathArgs.size() != 2) {
LOG.debug("URI has bad format. It should be \'moduleName/yyyy-MM-dd\' " + identifier);
throw new RestconfDocumentedException(
"URI has bad format. End of URI should be in format \'moduleName/yyyy-MM-dd\'", ErrorType.PROTOCOL,
ErrorTag.INVALID_VALUE);
}
try {
final String moduleName = pathArgs.get(0);
final String revision = pathArgs.get(1);
final Date moduleRevision = RestconfConstants.REVISION_FORMAT.parse(revision);
return QName.create(null, moduleRevision, moduleName);
} catch (final ParseException e) {
LOG.debug("URI has bad format. It should be \'moduleName/yyyy-MM-dd\' " + identifier);
throw new RestconfDocumentedException("URI has bad format. It should be \'moduleName/yyyy-MM-dd\'",
ErrorType.PROTOCOL, ErrorTag.INVALID_VALUE);
}
}
/**
* Parsing {@link Module} module by {@link String} module name and
* {@link Date} revision and from the parsed module create
* {@link SchemaExportContext}
*
* @param schemaContext
* - {@link SchemaContext}
* @param identifier
* - path parameter
* @param domMountPointService
* - {@link DOMMountPointService}
* @return {@link SchemaExportContext}
*/
public static SchemaExportContext toSchemaExportContextFromIdentifier(final SchemaContext schemaContext,
final String identifier, final DOMMountPointService domMountPointService) {
final Iterable pathComponents = RestconfConstants.SLASH_SPLITTER.split(identifier);
final Iterator componentIter = pathComponents.iterator();
if (!Iterables.contains(pathComponents, RestconfConstants.MOUNT)) {
final String moduleName = RestconfValidation.validateAndGetModulName(componentIter);
final Date revision = RestconfValidation.validateAndGetRevision(componentIter);
final Module module = schemaContext.findModuleByName(moduleName, revision);
return new SchemaExportContext(schemaContext, module);
} else {
final StringBuilder pathBuilder = new StringBuilder();
while (componentIter.hasNext()) {
final String current = componentIter.next();
if (RestconfConstants.MOUNT.equals(current)) {
pathBuilder.append("/");
pathBuilder.append(RestconfConstants.MOUNT);
break;
}
if (pathBuilder.length() != 0) {
pathBuilder.append("/");
}
pathBuilder.append(current);
}
final InstanceIdentifierContext> point = ParserIdentifier
.toInstanceIdentifier(pathBuilder.toString(), schemaContext, Optional.of(domMountPointService));
final String moduleName = RestconfValidation.validateAndGetModulName(componentIter);
final Date revision = RestconfValidation.validateAndGetRevision(componentIter);
final Module module = point.getMountPoint().getSchemaContext().findModuleByName(moduleName, revision);
return new SchemaExportContext(point.getMountPoint().getSchemaContext(), module);
}
}
}