| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF 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 org.apache.knox.gateway.service.admin; |
| |
| import com.fasterxml.jackson.databind.ObjectMapper; |
| import org.apache.knox.gateway.services.ServiceType; |
| import org.apache.knox.gateway.services.GatewayServices; |
| import org.apache.knox.gateway.services.security.AliasService; |
| import org.apache.knox.gateway.services.security.AliasServiceException; |
| |
| import javax.servlet.http.HttpServletRequest; |
| import javax.ws.rs.Consumes; |
| import javax.ws.rs.DELETE; |
| import javax.ws.rs.FormParam; |
| import javax.ws.rs.GET; |
| import javax.ws.rs.POST; |
| import javax.ws.rs.PUT; |
| import javax.ws.rs.Path; |
| import javax.ws.rs.PathParam; |
| import javax.ws.rs.Produces; |
| import javax.ws.rs.core.Context; |
| import javax.ws.rs.core.MediaType; |
| import javax.ws.rs.core.Response; |
| import java.util.List; |
| |
| import static javax.ws.rs.core.MediaType.APPLICATION_FORM_URLENCODED; |
| import static javax.ws.rs.core.MediaType.APPLICATION_JSON; |
| import static javax.ws.rs.core.MediaType.APPLICATION_XML; |
| import static javax.ws.rs.core.MediaType.TEXT_PLAIN; |
| import static javax.ws.rs.core.Response.Status.BAD_REQUEST; |
| import static javax.ws.rs.core.Response.Status.INTERNAL_SERVER_ERROR; |
| import static javax.ws.rs.core.Response.status; |
| |
| /** |
| * Rest API for Knox Alias Service |
| * @since 1.3.0 |
| */ |
| @Path("/api/v1") |
| public class AliasResource { |
| private static final String ALIASES_API_PATH = "aliases"; |
| private static final String ALIASES_TOPOLOGY_API_PATH = |
| ALIASES_API_PATH + "/{topology}"; |
| private static final String ALIAS_API_PATH = |
| ALIASES_TOPOLOGY_API_PATH + "/{alias}"; |
| |
| @Context |
| private HttpServletRequest request; |
| |
| /** |
| * Create alias with PUT |
| * @param topology topology/cluster name |
| * @param alias alias to be created |
| * @param value value of the alias |
| * @return json response |
| */ |
| @PUT |
| @Produces({ APPLICATION_JSON }) |
| @Consumes({ APPLICATION_XML, APPLICATION_JSON, TEXT_PLAIN }) |
| @Path(ALIAS_API_PATH) |
| public Response putAlias(@PathParam("topology") final String topology, |
| @PathParam("alias") final String alias, final String value) { |
| return postAlias(topology, alias, value); |
| } |
| |
| /** |
| * Create alias with POST |
| * @param topology topology/cluster name |
| * @param alias alias to be created |
| * @param value value of the alias |
| * @return json response |
| */ |
| @POST |
| @Produces({ APPLICATION_JSON }) |
| @Consumes(APPLICATION_FORM_URLENCODED) |
| @Path(ALIAS_API_PATH) |
| public Response postAlias(@PathParam("topology") final String topology, |
| @PathParam("alias") final String alias, |
| @FormParam("value") final String value) { |
| |
| if (value == null || value.isEmpty()) { |
| return status(BAD_REQUEST). |
| entity("Alias value cannot be null or blank"). |
| type(MediaType.APPLICATION_JSON_TYPE).build(); |
| } |
| |
| final AliasService as = getAliasService(); |
| |
| try { |
| as.addAliasForCluster(topology, alias, value); |
| return status(Response.Status.CREATED). |
| entity("{ \"created\" : { \"topology\": \"" + topology |
| + "\", \"alias\": \"" + alias + "\" } }"). |
| type(MediaType.APPLICATION_JSON_TYPE). |
| build(); |
| } catch (AliasServiceException e) { |
| return status(INTERNAL_SERVER_ERROR). |
| entity("Error adding alias " + alias + " for cluster " + topology |
| + ", reason: " + e.toString()). |
| type(MediaType.APPLICATION_JSON_TYPE).build(); |
| } |
| } |
| |
| /** |
| * Delete alias |
| * |
| * @param topology topology/cluster name |
| * @param alias alias to be deleted |
| * @return json response |
| */ |
| @DELETE |
| @Produces({ APPLICATION_JSON }) |
| @Path(ALIAS_API_PATH) |
| public Response deleteAlias(@PathParam("topology") final String topology, |
| @PathParam("alias") final String alias) { |
| |
| final AliasService as = getAliasService(); |
| |
| try { |
| as.removeAliasForCluster(topology, alias); |
| return status(Response.Status.OK). |
| entity("{ \"deleted\" : { \"topology\": \"" + topology |
| + "\", \"alias\": \"" + alias + "\" } }"). |
| type(MediaType.APPLICATION_JSON_TYPE). |
| build(); |
| } catch (AliasServiceException e) { |
| return status(INTERNAL_SERVER_ERROR). |
| entity("Error deleting alias " + alias + " for cluster " + topology |
| + ", reason: " + e.toString()). |
| type(MediaType.APPLICATION_JSON_TYPE).build(); |
| } |
| } |
| |
| /** |
| * Given topology name get all the defined aliases. |
| * |
| * @param topology topology/cluster name |
| * @return list of aliases |
| * @since 1.3.0 |
| */ |
| @GET |
| @Produces({ APPLICATION_JSON }) |
| @Path(ALIASES_TOPOLOGY_API_PATH) |
| public Response getAliases(@PathParam("topology") final String topology) { |
| |
| final ObjectMapper mapper = new ObjectMapper(); |
| final AliasService as = getAliasService(); |
| |
| List<String> aliases; |
| try { |
| aliases = as.getAliasesForCluster(topology); |
| return status(Response.Status.OK). |
| entity( |
| mapper.writeValueAsString(new TopologyAliases(topology, aliases))) |
| . |
| type(MediaType.APPLICATION_JSON_TYPE). |
| build(); |
| } catch (final Exception e) { |
| return status(INTERNAL_SERVER_ERROR). |
| entity( |
| "Error getting aliases for cluster " + topology + ", reason: " + e |
| .toString()). |
| type(MediaType.APPLICATION_JSON_TYPE).build(); |
| } |
| } |
| |
| private AliasService getAliasService() { |
| final GatewayServices services = (GatewayServices) request |
| .getServletContext() |
| .getAttribute(GatewayServices.GATEWAY_SERVICES_ATTRIBUTE); |
| |
| return services.getService(ServiceType.ALIAS_SERVICE); |
| } |
| |
| public static class TopologyAliases { |
| private String topology; |
| private List<String> aliases; |
| |
| public TopologyAliases(final String topology, final List<String> aliases) { |
| super(); |
| this.topology = topology; |
| this.aliases = aliases; |
| } |
| |
| public String getTopology() { |
| return topology; |
| } |
| |
| public void setTopology(String topology) { |
| this.topology = topology; |
| } |
| |
| public List<String> getAliases() { |
| return aliases; |
| } |
| |
| public void setAliases(List<String> aliases) { |
| this.aliases = aliases; |
| } |
| } |
| } |