Java tutorial
/* * Licensed to Metamarkets Group Inc. (Metamarkets) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. Metamarkets licenses this file * to you 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 io.druid.server.http.security; import com.google.common.base.Preconditions; import com.google.common.base.Predicate; import com.google.common.collect.ImmutableList; import com.google.common.collect.Iterables; import com.google.inject.Inject; import com.sun.jersey.spi.container.ContainerRequest; import io.druid.server.security.Access; import io.druid.server.security.AuthConfig; import io.druid.server.security.AuthorizationInfo; import io.druid.server.security.Resource; import io.druid.server.security.ResourceType; import javax.ws.rs.WebApplicationException; import javax.ws.rs.core.PathSegment; import javax.ws.rs.core.Response; import java.util.List; /** * Use this ResourceFilter when the datasource information is present after "rules" segment in the request Path * Here are some example paths where this filter is used - * - druid/coordinator/v1/rules/ * */ public class RulesResourceFilter extends AbstractResourceFilter { @Inject public RulesResourceFilter(AuthConfig authConfig) { super(authConfig); } @Override public ContainerRequest filter(ContainerRequest request) { if (getAuthConfig().isEnabled()) { // This is an experimental feature, see - https://github.com/druid-io/druid/pull/2424 final String dataSourceName = request.getPathSegments() .get(Iterables.indexOf(request.getPathSegments(), new Predicate<PathSegment>() { @Override public boolean apply(PathSegment input) { return input.getPath().equals("rules"); } }) + 1).getPath(); Preconditions.checkNotNull(dataSourceName); final AuthorizationInfo authorizationInfo = (AuthorizationInfo) getReq() .getAttribute(AuthConfig.DRUID_AUTH_TOKEN); Preconditions.checkNotNull(authorizationInfo, "Security is enabled but no authorization info found in the request"); final Access authResult = authorizationInfo .isAuthorized(new Resource(dataSourceName, ResourceType.DATASOURCE), getAction(request)); if (!authResult.isAllowed()) { throw new WebApplicationException(Response.status(Response.Status.FORBIDDEN) .entity(String.format("Access-Check-Result: %s", authResult.toString())).build()); } } return request; } @Override public boolean isApplicable(String requestPath) { List<String> applicablePaths = ImmutableList.of("druid/coordinator/v1/rules/"); for (String path : applicablePaths) { if (requestPath.startsWith(path) && !requestPath.equals(path)) { return true; } } return false; } }