northbound-api/src/main/java/org/opendaylight/neutron/northbound/api/NeutronMeteringLabelRulesNorthbound.java

   1 /*
   2  * Copyright (c) 2015 IBM Corporation and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.neutron.northbound.api;
  10
  11 import java.net.HttpURLConnection;
  12
  13 import java.util.ArrayList;
  14 import java.util.Iterator;
  15 import java.util.List;
  16
  17 import javax.ws.rs.Consumes;
  18 import javax.ws.rs.DELETE;
  19 import javax.ws.rs.GET;
  20 import javax.ws.rs.POST;
  21 import javax.ws.rs.Path;
  22 import javax.ws.rs.PathParam;
  23 import javax.ws.rs.Produces;
  24 import javax.ws.rs.QueryParam;
  25 import javax.ws.rs.core.Context;
  26 import javax.ws.rs.core.MediaType;
  27 import javax.ws.rs.core.Response;
  28 import javax.ws.rs.core.UriInfo;
  29
  30 import org.codehaus.enunciate.jaxrs.ResponseCode;
  31 import org.codehaus.enunciate.jaxrs.StatusCodes;
  32 import org.codehaus.enunciate.jaxrs.TypeHint;
  33
  34 import org.opendaylight.neutron.spi.INeutronMeteringLabelRuleAware;
  35 import org.opendaylight.neutron.spi.INeutronMeteringLabelRuleCRUD;
  36 import org.opendaylight.neutron.spi.NeutronCRUDInterfaces;
  37 import org.opendaylight.neutron.spi.NeutronMeteringLabelRule;
  38
  39 /**
  40  * Neutron Northbound REST APIs for Metering Lable Rules.<br>
  41  * This class provides REST APIs for managing neutron metering label rules
  42  *
  43  * <br>
  44  * <br>
  45  * Authentication scheme : <b>HTTP Basic</b><br>
  46  * Authentication realm : <b>opendaylight</b><br>
  47  * Transport : <b>HTTP and HTTPS</b><br>
  48  * <br>
  49  * HTTPS Authentication is disabled by default. Administrator can enable it in
  50  * tomcat-server.xml after adding a proper keystore / SSL certificate from a
  51  * trusted authority.<br>
  52  * More info :
  53  * http://tomcat.apache.org/tomcat-7.0-doc/ssl-howto.html#Configuration
  54  *
  55  */
  56
  57 @Path("/metering/metering-label-rules")
  58 public class NeutronMeteringLabelRulesNorthbound {
  59
  60     private static final int HTTP_OK_BOTTOM = 200;
  61     private static final int HTTP_OK_TOP = 299;
  62
  63     private NeutronMeteringLabelRule extractFields(NeutronMeteringLabelRule o, List<String> fields) {
  64         return o.extractFields(fields);
  65     }
  66
  67     private NeutronCRUDInterfaces getNeutronInterfaces() {
  68         NeutronCRUDInterfaces answer = new NeutronCRUDInterfaces().fetchINeutronMeteringLabelRuleCRUD(this);
  69         if (answer.getMeteringLabelRuleInterface() == null) {
  70             throw new ServiceUnavailableException("NeutronMeteringLabelRule CRUD Interface "
  71                     + RestMessages.SERVICEUNAVAILABLE.toString());
  72         }
  73         return answer;
  74     }
  75
  76     @Context
  77     UriInfo uriInfo;
  78
  79     /**
  80      * Returns a list of all metering label rules */
  81
  82     @GET
  83     @Produces({ MediaType.APPLICATION_JSON })
  84     //@TypeHint(OpenStackNetworks.class)
  85     @StatusCodes({
  86             @ResponseCode(code = HttpURLConnection.HTTP_OK, condition = "Operation successful"),
  87             @ResponseCode(code = HttpURLConnection.HTTP_UNAUTHORIZED, condition = "Unauthorized"),
  88             @ResponseCode(code = HttpURLConnection.HTTP_NOT_IMPLEMENTED, condition = "Not Implemented"),
  89             @ResponseCode(code = HttpURLConnection.HTTP_UNAVAILABLE, condition = "No providers available") })
  90     public Response listMeteringLabelRules(
  91             // return fields
  92             @QueryParam("fields") List<String> fields,
  93             // filter fields
  94             @QueryParam("id") String queryID,
  95             @QueryParam("direction") String queryDirection,
  96             @QueryParam("remote_ip_prefix") String queryRemoteIPPrefix,
  97             @QueryParam("metering_label_id") String queryLabelID
  98             // pagination and sorting are TODO
  99             ) {
 100         INeutronMeteringLabelRuleCRUD ruleInterface = getNeutronInterfaces().getMeteringLabelRuleInterface();
 101         List<NeutronMeteringLabelRule> allNeutronMeteringLabelRules = ruleInterface.getAllNeutronMeteringLabelRules();
 102         List<NeutronMeteringLabelRule> ans = new ArrayList<NeutronMeteringLabelRule>();
 103         Iterator<NeutronMeteringLabelRule> i = allNeutronMeteringLabelRules.iterator();
 104         while (i.hasNext()) {
 105             NeutronMeteringLabelRule oSS = i.next();
 106             if ((queryID == null || queryID.equals(oSS.getID())) &&
 107                     (queryDirection == null || queryDirection.equals(oSS.getMeteringLabelRuleDirection())) &&
 108                     (queryRemoteIPPrefix == null || queryRemoteIPPrefix.equals(oSS.getMeteringLabelRuleRemoteIPPrefix())) &&
 109                     (queryLabelID == null || queryLabelID.equals(oSS.getMeteringLabelRuleLabelID()))) {
 110                 if (fields.size() > 0) {
 111                     ans.add(extractFields(oSS,fields));
 112                 } else {
 113                     ans.add(oSS);
 114                 }
 115             }
 116         }
 117         //TODO: apply pagination to results
 118         return Response.status(HttpURLConnection.HTTP_OK).entity(
 119                 new NeutronMeteringLabelRuleRequest(ans)).build();
 120     }
 121
 122     /**
 123      * Returns a specific metering label rule */
 124
 125     @Path("{ruleUUID}")
 126     @GET
 127     @Produces({ MediaType.APPLICATION_JSON })
 128     @StatusCodes({
 129             @ResponseCode(code = HttpURLConnection.HTTP_OK, condition = "Operation successful"),
 130             @ResponseCode(code = HttpURLConnection.HTTP_UNAUTHORIZED, condition = "Unauthorized"),
 131             @ResponseCode(code = HttpURLConnection.HTTP_FORBIDDEN, condition = "Forbidden"),
 132             @ResponseCode(code = HttpURLConnection.HTTP_NOT_FOUND, condition = "Not Found"),
 133             @ResponseCode(code = HttpURLConnection.HTTP_NOT_IMPLEMENTED, condition = "Not Implemented"),
 134             @ResponseCode(code = HttpURLConnection.HTTP_UNAVAILABLE, condition = "No providers available") })
 135     public Response showMeteringLabelRule(
 136             @PathParam("ruleUUID") String ruleUUID,
 137             // return fields
 138             @QueryParam("fields") List<String> fields) {
 139         INeutronMeteringLabelRuleCRUD ruleInterface = getNeutronInterfaces().getMeteringLabelRuleInterface();
 140         if (!ruleInterface.neutronMeteringLabelRuleExists(ruleUUID)) {
 141             throw new ResourceNotFoundException("MeteringLabelRule UUID not found");
 142         }
 143         if (fields.size() > 0) {
 144             NeutronMeteringLabelRule ans = ruleInterface.getNeutronMeteringLabelRule(ruleUUID);
 145             return Response.status(HttpURLConnection.HTTP_OK).entity(
 146                     new NeutronMeteringLabelRuleRequest(extractFields(ans, fields))).build();
 147         } else {
 148             return Response.status(HttpURLConnection.HTTP_OK).entity(
 149                     new NeutronMeteringLabelRuleRequest(ruleInterface.getNeutronMeteringLabelRule(ruleUUID))).build();
 150         }
 151     }
 152
 153     /**
 154      * Creates new metering label rule */
 155     @POST
 156     @Produces({ MediaType.APPLICATION_JSON })
 157     @Consumes({ MediaType.APPLICATION_JSON })
 158     //@TypeHint(NeutronNetwork.class)
 159     @StatusCodes({
 160             @ResponseCode(code = HttpURLConnection.HTTP_CREATED, condition = "Created"),
 161             @ResponseCode(code = HttpURLConnection.HTTP_UNAVAILABLE, condition = "No providers available") })
 162     public Response createMeteringLabelRule(final NeutronMeteringLabelRuleRequest input) {
 163         INeutronMeteringLabelRuleCRUD meteringLabelRuleInterface = getNeutronInterfaces().getMeteringLabelRuleInterface();
 164         if (input.isSingleton()) {
 165             NeutronMeteringLabelRule singleton = input.getSingleton();
 166
 167             Object[] instances = NeutronUtil.getInstances(INeutronMeteringLabelRuleAware.class, this);
 168             if (instances != null) {
 169                 if (instances.length > 0) {
 170                     for (Object instance : instances) {
 171                         INeutronMeteringLabelRuleAware service = (INeutronMeteringLabelRuleAware) instance;
 172                         int status = service.canCreateMeteringLabelRule(singleton);
 173                         if (status < HTTP_OK_BOTTOM || status > HTTP_OK_TOP) {
 174                             return Response.status(status).build();
 175                         }
 176                     }
 177                 } else {
 178                     throw new ServiceUnavailableException("No providers registered.  Please try again later");
 179                 }
 180             } else {
 181                 throw new ServiceUnavailableException("Couldn't get providers list.  Please try again later");
 182             }
 183
 184             /*
 185              * add meteringLabelRule to the cache
 186              */
 187             meteringLabelRuleInterface.addNeutronMeteringLabelRule(singleton);
 188             if (instances != null) {
 189                 for (Object instance : instances) {
 190                     INeutronMeteringLabelRuleAware service = (INeutronMeteringLabelRuleAware) instance;
 191                     service.neutronMeteringLabelRuleCreated(singleton);
 192                 }
 193             }
 194         } else {
 195
 196             /*
 197              * only singleton meteringLabelRule creates supported
 198              */
 199             throw new BadRequestException("Only singleton meteringLabelRule creates supported");
 200         }
 201         return Response.status(HttpURLConnection.HTTP_CREATED).entity(input).build();
 202     }
 203
 204     /**
 205      * Deletes a Metering Label rule */
 206
 207     @Path("{ruleUUID}")
 208     @DELETE
 209     @StatusCodes({
 210             @ResponseCode(code = HttpURLConnection.HTTP_NO_CONTENT, condition = "No Content"),
 211             @ResponseCode(code = HttpURLConnection.HTTP_UNAVAILABLE, condition = "No providers available") })
 212     public Response deleteMeteringLabelRule(
 213             @PathParam("ruleUUID") String ruleUUID) {
 214         INeutronMeteringLabelRuleCRUD meteringLabelRuleInterface = getNeutronInterfaces().getMeteringLabelRuleInterface();
 215
 216         NeutronMeteringLabelRule singleton = meteringLabelRuleInterface.getNeutronMeteringLabelRule(ruleUUID);
 217         Object[] instances = NeutronUtil.getInstances(INeutronMeteringLabelRuleAware.class, this);
 218         if (instances != null) {
 219             if (instances.length > 0) {
 220                 for (Object instance : instances) {
 221                     INeutronMeteringLabelRuleAware service = (INeutronMeteringLabelRuleAware) instance;
 222                     int status = service.canDeleteMeteringLabelRule(singleton);
 223                     if (status < HTTP_OK_BOTTOM || status > HTTP_OK_TOP) {
 224                         return Response.status(status).build();
 225                     }
 226                 }
 227             } else {
 228                 throw new ServiceUnavailableException("No providers registered.  Please try again later");
 229             }
 230         } else {
 231             throw new ServiceUnavailableException("Couldn't get providers list.  Please try again later");
 232         }
 233         meteringLabelRuleInterface.removeNeutronMeteringLabelRule(ruleUUID);
 234         if (instances != null) {
 235             for (Object instance : instances) {
 236                 INeutronMeteringLabelRuleAware service = (INeutronMeteringLabelRuleAware) instance;
 237                 service.neutronMeteringLabelRuleDeleted(singleton);
 238             }
 239         }
 240         return Response.status(HttpURLConnection.HTTP_NO_CONTENT).build();
 241     }
 242 }