vpp-api/java/jvpp/gen/jvppgen/jvpp_callback_facade_gen.py

   1 #!/usr/bin/env python
   2 #
   3 # Copyright (c) 2016 Cisco and/or its affiliates.
   4 # Licensed under the Apache License, Version 2.0 (the "License");
   5 # you may not use this file except in compliance with the License.
   6 # You may obtain a copy of the License at:
   7 #
   8 #     http://www.apache.org/licenses/LICENSE-2.0
   9 #
  10 # Unless required by applicable law or agreed to in writing, software
  11 # distributed under the License is distributed on an "AS IS" BASIS,
  12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13 # See the License for the specific language governing permissions and
  14 # limitations under the License.
  15
  16 import os, util
  17 from string import Template
  18
  19 import callback_gen
  20 import dto_gen
  21
  22 jvpp_ifc_template = Template("""
  23 package $plugin_package.$callback_facade_package;
  24
  25 /**
  26  * <p>Callback Java API representation of $plugin_package plugin.
  27  * <br>It was generated by jvpp_callback_facade_gen.py based on $inputfile
  28  * <br>(python representation of api file generated by vppapigen).
  29  */
  30 public interface CallbackJVpp${plugin_name} extends $base_package.$notification_package.NotificationRegistryProvider, java.lang.AutoCloseable {
  31
  32     // TODO add send
  33
  34 $methods
  35 }
  36 """)
  37
  38 jvpp_impl_template = Template("""
  39 package $plugin_package.$callback_facade_package;
  40
  41 /**
  42  * <p>Default implementation of Callback${plugin_name}JVpp interface.
  43  * <br>It was generated by jvpp_callback_facade_gen.py based on $inputfile
  44  * <br>(python representation of api file generated by vppapigen).
  45  */
  46 public final class CallbackJVpp${plugin_name}Facade implements CallbackJVpp${plugin_name} {
  47
  48     private final $plugin_package.JVpp${plugin_name} jvpp;
  49     private final java.util.Map<Integer, $base_package.$callback_package.JVppCallback> callbacks;
  50     private final $plugin_package.$notification_package.${plugin_name}NotificationRegistryImpl notificationRegistry = new $plugin_package.$notification_package.${plugin_name}NotificationRegistryImpl();
  51     /**
  52      * <p>Create CallbackJVpp${plugin_name}Facade object for provided JVpp instance.
  53      * Constructor internally creates CallbackJVppFacadeCallback class for processing callbacks
  54      * and then connects to provided JVpp instance
  55      *
  56      * @param jvpp provided $base_package.JVpp instance
  57      *
  58      * @throws java.io.IOException in case instance cannot connect to JVPP
  59      */
  60     public CallbackJVpp${plugin_name}Facade(final $base_package.JVppRegistry registry, final $plugin_package.JVpp${plugin_name} jvpp) throws java.io.IOException {
  61         this.jvpp = java.util.Objects.requireNonNull(jvpp,"jvpp is null");
  62         this.callbacks = new java.util.HashMap<>();
  63         java.util.Objects.requireNonNull(registry, "JVppRegistry should not be null");
  64         registry.register(jvpp, new CallbackJVpp${plugin_name}FacadeCallback(this.callbacks, notificationRegistry));
  65     }
  66
  67     @Override
  68     public $plugin_package.$notification_package.${plugin_name}NotificationRegistry getNotificationRegistry() {
  69         return notificationRegistry;
  70     }
  71
  72     @Override
  73     public void close() throws Exception {
  74         jvpp.close();
  75     }
  76
  77     // TODO add send()
  78
  79 $methods
  80 }
  81 """)
  82
  83 method_template = Template(
  84     """    void $name($plugin_package.$dto_package.$request request, $plugin_package.$callback_package.$callback callback) throws $base_package.VppInvocationException;""")
  85
  86 method_impl_template = Template("""    public final void $name($plugin_package.$dto_package.$request request, $plugin_package.$callback_package.$callback callback) throws $base_package.VppInvocationException {
  87         synchronized (callbacks) {
  88             callbacks.put(jvpp.$name(request), callback);
  89         }
  90     }
  91 """)
  92
  93 no_arg_method_template = Template("""    void $name($plugin_package.$callback_package.$callback callback) throws $base_package.VppInvocationException;""")
  94 no_arg_method_impl_template = Template("""    public final void $name($plugin_package.$callback_package.$callback callback) throws $base_package.VppInvocationException {
  95         synchronized (callbacks) {
  96             callbacks.put(jvpp.$name(), callback);
  97         }
  98     }
  99 """)
 100
 101
 102 def generate_jvpp(func_list, base_package, plugin_package, plugin_name, dto_package, callback_package, notification_package, callback_facade_package, inputfile):
 103     """ Generates callback facade """
 104     print "Generating JVpp callback facade"
 105
 106     if os.path.exists(callback_facade_package):
 107         util.remove_folder(callback_facade_package)
 108
 109     os.mkdir(callback_facade_package)
 110
 111     methods = []
 112     methods_impl = []
 113     for func in func_list:
 114
 115         if util.is_notification(func['name']) or util.is_ignored(func['name']):
 116             continue
 117
 118         camel_case_name = util.underscore_to_camelcase(func['name'])
 119         camel_case_name_upper = util.underscore_to_camelcase_upper(func['name'])
 120         if util.is_reply(camel_case_name) or util.is_control_ping(camel_case_name):
 121             continue
 122
 123         # Strip suffix for dump calls
 124         callback_type = get_request_name(camel_case_name_upper, func['name']) + callback_gen.callback_suffix
 125
 126         if len(func['args']) == 0:
 127             methods.append(no_arg_method_template.substitute(name=camel_case_name,
 128                                                              base_package=base_package,
 129                                                              plugin_package=plugin_package,
 130                                                              dto_package=dto_package,
 131                                                              callback_package=callback_package,
 132                                                              callback=callback_type))
 133             methods_impl.append(no_arg_method_impl_template.substitute(name=camel_case_name,
 134                                                                        base_package=base_package,
 135                                                                        plugin_package=plugin_package,
 136                                                                        dto_package=dto_package,
 137                                                                        callback_package=callback_package,
 138                                                                        callback=callback_type))
 139         else:
 140             methods.append(method_template.substitute(name=camel_case_name,
 141                                                       request=camel_case_name_upper,
 142                                                       base_package=base_package,
 143                                                       plugin_package=plugin_package,
 144                                                       dto_package=dto_package,
 145                                                       callback_package=callback_package,
 146                                                       callback=callback_type))
 147             methods_impl.append(method_impl_template.substitute(name=camel_case_name,
 148                                                                 request=camel_case_name_upper,
 149                                                                 base_package=base_package,
 150                                                                 plugin_package=plugin_package,
 151                                                                 dto_package=dto_package,
 152                                                                 callback_package=callback_package,
 153                                                                 callback=callback_type))
 154
 155     join = os.path.join(callback_facade_package, "CallbackJVpp%s.java" % plugin_name)
 156     jvpp_file = open(join, 'w')
 157     jvpp_file.write(
 158         jvpp_ifc_template.substitute(inputfile=inputfile,
 159                                      methods="\n".join(methods),
 160                                      base_package=base_package,
 161                                      plugin_package=plugin_package,
 162                                      plugin_name=plugin_name,
 163                                      dto_package=dto_package,
 164                                      notification_package=notification_package,
 165                                      callback_facade_package=callback_facade_package))
 166     jvpp_file.flush()
 167     jvpp_file.close()
 168
 169     jvpp_file = open(os.path.join(callback_facade_package, "CallbackJVpp%sFacade.java" % plugin_name), 'w')
 170     jvpp_file.write(jvpp_impl_template.substitute(inputfile=inputfile,
 171                                                   methods="\n".join(methods_impl),
 172                                                   base_package=base_package,
 173                                                   plugin_package=plugin_package,
 174                                                   plugin_name=plugin_name,
 175                                                   dto_package=dto_package,
 176                                                   notification_package=notification_package,
 177                                                   callback_package=callback_package,
 178                                                   callback_facade_package=callback_facade_package))
 179     jvpp_file.flush()
 180     jvpp_file.close()
 181
 182     generate_callback(func_list, base_package, plugin_package, plugin_name, dto_package, callback_package, notification_package, callback_facade_package, inputfile)
 183
 184
 185 jvpp_facade_callback_template = Template("""
 186 package $plugin_package.$callback_facade_package;
 187
 188 /**
 189  * <p>Implementation of JVppGlobalCallback interface for Java Callback API.
 190  * <br>It was generated by jvpp_callback_facade_gen.py based on $inputfile
 191  * <br>(python representation of api file generated by vppapigen).
 192  */
 193 public final class CallbackJVpp${plugin_name}FacadeCallback implements $plugin_package.$callback_package.JVpp${plugin_name}GlobalCallback {
 194
 195     private final java.util.Map<Integer, $base_package.$callback_package.JVppCallback> requests;
 196     private final $plugin_package.$notification_package.Global${plugin_name}NotificationCallback notificationCallback;
 197     private static final java.util.logging.Logger LOG = java.util.logging.Logger.getLogger(CallbackJVpp${plugin_name}FacadeCallback.class.getName());
 198
 199     public CallbackJVpp${plugin_name}FacadeCallback(final java.util.Map<Integer, $base_package.$callback_package.JVppCallback> requestMap,
 200                                       final $plugin_package.$notification_package.Global${plugin_name}NotificationCallback notificationCallback) {
 201         this.requests = requestMap;
 202         this.notificationCallback = notificationCallback;
 203     }
 204
 205     @Override
 206     public void onError($base_package.VppCallbackException reply) {
 207
 208         $base_package.$callback_package.JVppCallback failedCall;
 209         synchronized(requests) {
 210             failedCall = requests.remove(reply.getCtxId());
 211         }
 212
 213         if(failedCall != null) {
 214             try {
 215                 failedCall.onError(reply);
 216             } catch(RuntimeException ex) {
 217                 ex.addSuppressed(reply);
 218                 LOG.log(java.util.logging.Level.WARNING, String.format("Callback: %s failed while handling exception: %s", failedCall, reply), ex);
 219             }
 220         }
 221     }
 222
 223     @Override
 224     @SuppressWarnings("unchecked")
 225     public void onControlPingReply($base_package.$dto_package.ControlPingReply reply) {
 226
 227         $base_package.$callback_package.ControlPingCallback callback;
 228         synchronized(requests) {
 229             callback = ($base_package.$callback_package.ControlPingCallback) requests.remove(reply.context);
 230         }
 231
 232         if(callback != null) {
 233             callback.onControlPingReply(reply);
 234         }
 235     }
 236
 237 $methods
 238 }
 239 """)
 240
 241 jvpp_facade_callback_method_template = Template("""
 242     @Override
 243     @SuppressWarnings("unchecked")
 244     public void on$callback_dto($plugin_package.$dto_package.$callback_dto reply) {
 245
 246         $plugin_package.$callback_package.$callback callback;
 247         synchronized(requests) {
 248             callback = ($plugin_package.$callback_package.$callback) requests.remove(reply.context);
 249         }
 250
 251         if(callback != null) {
 252             callback.on$callback_dto(reply);
 253         }
 254     }
 255 """)
 256
 257 jvpp_facade_callback_notification_method_template = Template("""
 258     @Override
 259     @SuppressWarnings("unchecked")
 260     public void on$callback_dto($plugin_package.$dto_package.$callback_dto notification) {
 261         notificationCallback.on$callback_dto(notification);
 262     }
 263 """)
 264
 265
 266 def generate_callback(func_list, base_package, plugin_package, plugin_name, dto_package, callback_package, notification_package, callback_facade_package, inputfile):
 267     callbacks = []
 268     for func in func_list:
 269
 270         camel_case_name_with_suffix = util.underscore_to_camelcase_upper(func['name'])
 271
 272         if util.is_ignored(func['name']) or util.is_control_ping(camel_case_name_with_suffix):
 273             continue
 274
 275         if util.is_reply(camel_case_name_with_suffix):
 276             callbacks.append(jvpp_facade_callback_method_template.substitute(plugin_package=plugin_package,
 277                                                                              dto_package=dto_package,
 278                                                                              callback_package=callback_package,
 279                                                                              callback=util.remove_reply_suffix(camel_case_name_with_suffix) + callback_gen.callback_suffix,
 280                                                                              callback_dto=camel_case_name_with_suffix))
 281
 282         if util.is_notification(func["name"]):
 283             with_notification_suffix = util.add_notification_suffix(camel_case_name_with_suffix)
 284             callbacks.append(jvpp_facade_callback_notification_method_template.substitute(plugin_package=plugin_package,
 285                                                                              dto_package=dto_package,
 286                                                                              callback_package=callback_package,
 287                                                                              callback=with_notification_suffix + callback_gen.callback_suffix,
 288                                                                              callback_dto=with_notification_suffix))
 289
 290     jvpp_file = open(os.path.join(callback_facade_package, "CallbackJVpp%sFacadeCallback.java" % plugin_name), 'w')
 291     jvpp_file.write(jvpp_facade_callback_template.substitute(inputfile=inputfile,
 292                                                              base_package=base_package,
 293                                                              plugin_package=plugin_package,
 294                                                              plugin_name=plugin_name,
 295                                                              dto_package=dto_package,
 296                                                              notification_package=notification_package,
 297                                                              callback_package=callback_package,
 298                                                              methods="".join(callbacks),
 299                                                              callback_facade_package=callback_facade_package))
 300     jvpp_file.flush()
 301     jvpp_file.close()
 302
 303
 304 # Returns request name or special one from unconventional_naming_rep_req map
 305 def get_request_name(camel_case_dto_name, func_name):
 306     if func_name in reverse_dict(util.unconventional_naming_rep_req):
 307         request_name = util.underscore_to_camelcase_upper(reverse_dict(util.unconventional_naming_rep_req)[func_name])
 308     else:
 309         request_name = camel_case_dto_name
 310     return remove_suffix(request_name)
 311
 312
 313 def reverse_dict(map):
 314     return dict((v, k) for k, v in map.iteritems())
 315
 316
 317 def remove_suffix(name):
 318     if util.is_reply(name):
 319         return util.remove_reply_suffix(name)
 320     else:
 321         if util.is_dump(name):
 322             return util.remove_suffix(name, util.dump_suffix)
 323         else:
 324             return name