Java tutorial
/* * 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.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); /** * Make {@link InstanceIdentifierContext} from identifier. * * @param identifier * - path identifier * @param schemaContext * - {@link SchemaContext} * @return {@link InstanceIdentifierContext} */ public static InstanceIdentifierContext<?> toInstanceIdentifier(final String identifier, final SchemaContext schemaContext) { final YangInstanceIdentifier deserialize; if (identifier.contains(RestconfConstants.MOUNT)) { final String mountPointId = identifier.substring(0, identifier.indexOf("/" + RestconfConstants.MOUNT)); deserialize = IdentifierCodec.deserialize(mountPointId, schemaContext); } else { deserialize = IdentifierCodec.deserialize(identifier, schemaContext); } final DataSchemaContextNode<?> child = DataSchemaContextTree.from(schemaContext).getChild(deserialize); return new InstanceIdentifierContext<SchemaNode>(deserialize, child.getDataSchemaNode(), null, 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<String> split = splitter.split(moduleNameAndRevision); final List<String> 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<String> pathComponents = RestconfConstants.SLASH_SPLITTER.split(identifier); final Iterator<String> 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(); pathBuilder.append("/"); pathBuilder.append(current); if (RestconfConstants.MOUNT.equals(current)) { break; } } final InstanceIdentifierContext<?> point = ParserIdentifier.toInstanceIdentifier(pathBuilder.toString(), schemaContext); final DOMMountPoint mountPoint = domMountPointService.getMountPoint(point.getInstanceIdentifier()) .get(); final String moduleName = RestconfValidation.validateAndGetModulName(componentIter); final Date revision = RestconfValidation.validateAndGetRevision(componentIter); final Module module = mountPoint.getSchemaContext().findModuleByName(moduleName, revision); return new SchemaExportContext(mountPoint.getSchemaContext(), module); } } }