Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Licensed to the Apache Software Foundation (ASF) under one |
| 3 | * or more contributor license agreements. See the NOTICE file |
| 4 | * distributed with this work for additional information |
| 5 | * regarding copyright ownership. The ASF licenses this file |
| 6 | * to you under the Apache License, Version 2.0 (the |
| 7 | * "License"); you may not use this file except in compliance |
| 8 | * with the License. You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, |
| 13 | * software distributed under the License is distributed on an |
| 14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 15 | * KIND, either express or implied. See the License for the |
| 16 | * specific language governing permissions and limitations |
| 17 | * under the License. |
| 18 | */ |
Pierre De Rop | aacb3aa | 2009-12-04 22:53:23 +0000 | [diff] [blame] | 19 | package org.apache.felix.dm.impl.dependencies; |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 20 | |
Marcel Offermans | 26081d3 | 2010-07-12 12:43:42 +0000 | [diff] [blame] | 21 | import java.lang.reflect.InvocationTargetException; |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 22 | import java.lang.reflect.Proxy; |
| 23 | import java.util.AbstractMap; |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 24 | import java.util.ArrayList; |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 25 | import java.util.Arrays; |
| 26 | import java.util.Comparator; |
Marcel Offermans | 117aa2f | 2009-12-10 09:48:17 +0000 | [diff] [blame] | 27 | import java.util.Dictionary; |
Marcel Offermans | 09e14aa | 2010-11-25 13:36:23 +0000 | [diff] [blame] | 28 | import java.util.HashMap; |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 29 | import java.util.HashSet; |
Marcel Offermans | 7f0cec0 | 2011-11-04 13:39:28 +0000 | [diff] [blame] | 30 | import java.util.Iterator; |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 31 | import java.util.List; |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 32 | import java.util.Map; |
Marcel Offermans | 7f0cec0 | 2011-11-04 13:39:28 +0000 | [diff] [blame] | 33 | import java.util.Map.Entry; |
Marcel Offermans | 26081d3 | 2010-07-12 12:43:42 +0000 | [diff] [blame] | 34 | import java.util.Properties; |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 35 | import java.util.Set; |
| 36 | |
Marcel Offermans | 706fb27 | 2010-11-15 12:52:58 +0000 | [diff] [blame] | 37 | import org.apache.felix.dm.Component; |
Marcel Offermans | 9e50ef3 | 2010-10-07 11:37:00 +0000 | [diff] [blame] | 38 | import org.apache.felix.dm.ComponentDependencyDeclaration; |
Marcel Offermans | 8b93efa | 2010-07-02 18:27:21 +0000 | [diff] [blame] | 39 | import org.apache.felix.dm.Dependency; |
Marcel Offermans | 3d92121 | 2010-08-09 13:37:02 +0000 | [diff] [blame] | 40 | import org.apache.felix.dm.DependencyService; |
Marcel Offermans | 706fb27 | 2010-11-15 12:52:58 +0000 | [diff] [blame] | 41 | import org.apache.felix.dm.InvocationUtil; |
Marcel Offermans | 8b93efa | 2010-07-02 18:27:21 +0000 | [diff] [blame] | 42 | import org.apache.felix.dm.ServiceDependency; |
Marcel Offermans | 7f0cec0 | 2011-11-04 13:39:28 +0000 | [diff] [blame] | 43 | import org.apache.felix.dm.ServiceUtil; |
Pierre De Rop | aacb3aa | 2009-12-04 22:53:23 +0000 | [diff] [blame] | 44 | import org.apache.felix.dm.impl.DefaultNullObject; |
| 45 | import org.apache.felix.dm.impl.Logger; |
Marcel Offermans | faaed47 | 2010-09-08 10:07:32 +0000 | [diff] [blame] | 46 | import org.apache.felix.dm.tracker.ServiceTracker; |
| 47 | import org.apache.felix.dm.tracker.ServiceTrackerCustomizer; |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 48 | import org.osgi.framework.BundleContext; |
| 49 | import org.osgi.framework.Constants; |
| 50 | import org.osgi.framework.InvalidSyntaxException; |
| 51 | import org.osgi.framework.ServiceReference; |
Marcel Offermans | 26081d3 | 2010-07-12 12:43:42 +0000 | [diff] [blame] | 52 | import org.osgi.service.log.LogService; |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 53 | |
| 54 | /** |
| 55 | * Service dependency that can track an OSGi service. |
| 56 | * |
| 57 | * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| 58 | */ |
Marcel Offermans | faaed47 | 2010-09-08 10:07:32 +0000 | [diff] [blame] | 59 | public class ServiceDependencyImpl extends DependencyBase implements ServiceDependency, ServiceTrackerCustomizer, ComponentDependencyDeclaration { |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 60 | protected List m_services = new ArrayList(); |
Marcel Offermans | 74363c3 | 2009-11-23 19:56:08 +0000 | [diff] [blame] | 61 | protected volatile ServiceTracker m_tracker; |
| 62 | protected BundleContext m_context; |
Marcel Offermans | 74363c3 | 2009-11-23 19:56:08 +0000 | [diff] [blame] | 63 | protected volatile Class m_trackedServiceName; |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 64 | private Object m_nullObject; |
| 65 | private volatile String m_trackedServiceFilter; |
| 66 | private volatile String m_trackedServiceFilterUnmodified; |
| 67 | private volatile ServiceReference m_trackedServiceReference; |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 68 | private Object m_callbackInstance; |
| 69 | private String m_callbackAdded; |
| 70 | private String m_callbackChanged; |
| 71 | private String m_callbackRemoved; |
Marcel Offermans | 7f0cec0 | 2011-11-04 13:39:28 +0000 | [diff] [blame] | 72 | private String m_callbackSwapped; |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 73 | private boolean m_autoConfig; |
Marcel Offermans | 74363c3 | 2009-11-23 19:56:08 +0000 | [diff] [blame] | 74 | protected ServiceReference m_reference; |
| 75 | protected Object m_serviceInstance; |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 76 | private String m_autoConfigInstance; |
| 77 | private boolean m_autoConfigInvoked; |
| 78 | private Object m_defaultImplementation; |
| 79 | private Object m_defaultImplementationInstance; |
Marcel Offermans | b196d72 | 2009-11-26 17:12:12 +0000 | [diff] [blame] | 80 | private boolean m_isAvailable; |
Marcel Offermans | 26081d3 | 2010-07-12 12:43:42 +0000 | [diff] [blame] | 81 | private boolean m_propagate; |
| 82 | private Object m_propagateCallbackInstance; |
| 83 | private String m_propagateCallbackMethod; |
Marcel Offermans | 7784e40 | 2011-01-21 20:41:50 +0000 | [diff] [blame] | 84 | private final Map m_sr = new HashMap(); /* <DependencyService, Set<Tuple<ServiceReference, Object>> */ |
Marcel Offermans | 7f0cec0 | 2011-11-04 13:39:28 +0000 | [diff] [blame] | 85 | private Map m_componentByRank = new HashMap(); /* <Component, Map<Long, Map<Integer, Tuple>>> */ |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 86 | |
| 87 | private static final Comparator COMPARATOR = new Comparator() { |
| 88 | public int getRank(ServiceReference ref) { |
| 89 | Object ranking = ref.getProperty(Constants.SERVICE_RANKING); |
| 90 | if (ranking != null && (ranking instanceof Integer)) { |
| 91 | return ((Integer) ranking).intValue(); |
| 92 | } |
| 93 | return 0; |
| 94 | } |
| 95 | |
| 96 | public int compare(Object a, Object b) { |
| 97 | ServiceReference ra = (ServiceReference) a, rb = (ServiceReference) b; |
| 98 | int ranka = getRank(ra); |
| 99 | int rankb = getRank(rb); |
| 100 | if (ranka < rankb) { |
| 101 | return -1; |
| 102 | } |
| 103 | else if (ranka > rankb) { |
| 104 | return 1; |
| 105 | } |
| 106 | return 0; |
| 107 | } |
| 108 | }; |
| 109 | |
Marcel Offermans | 7784e40 | 2011-01-21 20:41:50 +0000 | [diff] [blame] | 110 | private static final class Tuple /* <ServiceReference, Object> */ { |
| 111 | private final ServiceReference m_serviceReference; |
| 112 | private final Object m_service; |
| 113 | |
| 114 | public Tuple(ServiceReference first, Object last) { |
| 115 | m_serviceReference = first; |
| 116 | m_service = last; |
| 117 | } |
| 118 | |
| 119 | public ServiceReference getServiceReference() { |
| 120 | return m_serviceReference; |
| 121 | } |
| 122 | |
| 123 | public Object getService() { |
| 124 | return m_service; |
| 125 | } |
| 126 | |
| 127 | public boolean equals(Object obj) { |
| 128 | return ((Tuple) obj).getServiceReference().equals(getServiceReference()); |
| 129 | } |
| 130 | |
| 131 | public int hashCode() { |
| 132 | return m_serviceReference.hashCode(); |
| 133 | } |
| 134 | } |
| 135 | |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 136 | /** |
| 137 | * Entry to wrap service properties behind a Map. |
| 138 | */ |
Marcel Offermans | 7784e40 | 2011-01-21 20:41:50 +0000 | [diff] [blame] | 139 | private static final class ServicePropertiesMapEntry implements Map.Entry { |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 140 | private final String m_key; |
| 141 | private Object m_value; |
| 142 | |
| 143 | public ServicePropertiesMapEntry(String key, Object value) { |
| 144 | m_key = key; |
| 145 | m_value = value; |
| 146 | } |
| 147 | |
| 148 | public Object getKey() { |
| 149 | return m_key; |
| 150 | } |
| 151 | |
| 152 | public Object getValue() { |
| 153 | return m_value; |
| 154 | } |
| 155 | |
| 156 | public String toString() { |
| 157 | return m_key + "=" + m_value; |
| 158 | } |
| 159 | |
| 160 | public Object setValue(Object value) { |
| 161 | Object oldValue = m_value; |
| 162 | m_value = value; |
| 163 | return oldValue; |
| 164 | } |
| 165 | |
| 166 | public boolean equals(Object o) { |
| 167 | if (!(o instanceof Map.Entry)) { |
| 168 | return false; |
| 169 | } |
| 170 | Map.Entry e = (Map.Entry) o; |
| 171 | return eq(m_key, e.getKey()) && eq(m_value, e.getValue()); |
| 172 | } |
| 173 | |
| 174 | public int hashCode() { |
| 175 | return ((m_key == null) ? 0 : m_key.hashCode()) ^ ((m_value == null) ? 0 : m_value.hashCode()); |
| 176 | } |
| 177 | |
| 178 | private static final boolean eq(Object o1, Object o2) { |
| 179 | return (o1 == null ? o2 == null : o1.equals(o2)); |
| 180 | } |
| 181 | } |
| 182 | |
| 183 | /** |
| 184 | * Wraps service properties behind a Map. |
| 185 | */ |
| 186 | private final static class ServicePropertiesMap extends AbstractMap { |
| 187 | private final ServiceReference m_ref; |
| 188 | |
| 189 | public ServicePropertiesMap(ServiceReference ref) { |
| 190 | m_ref = ref; |
| 191 | } |
| 192 | |
| 193 | public Object get(Object key) { |
| 194 | return m_ref.getProperty(key.toString()); |
| 195 | } |
| 196 | |
| 197 | public int size() { |
| 198 | return m_ref.getPropertyKeys().length; |
| 199 | } |
| 200 | |
| 201 | public Set entrySet() { |
| 202 | Set set = new HashSet(); |
| 203 | String[] keys = m_ref.getPropertyKeys(); |
| 204 | for (int i = 0; i < keys.length; i++) { |
| 205 | set.add(new ServicePropertiesMapEntry(keys[i], m_ref.getProperty(keys[i]))); |
| 206 | } |
| 207 | return set; |
| 208 | } |
| 209 | } |
| 210 | |
| 211 | /** |
| 212 | * Creates a new service dependency. |
| 213 | * |
| 214 | * @param context the bundle context |
| 215 | * @param logger the logger |
| 216 | */ |
Pierre De Rop | aacb3aa | 2009-12-04 22:53:23 +0000 | [diff] [blame] | 217 | public ServiceDependencyImpl(BundleContext context, Logger logger) { |
Marcel Offermans | b196d72 | 2009-11-26 17:12:12 +0000 | [diff] [blame] | 218 | super(logger); |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 219 | m_context = context; |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 220 | m_autoConfig = true; |
| 221 | } |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 222 | |
Marcel Offermans | b1959f4 | 2010-07-01 12:23:51 +0000 | [diff] [blame] | 223 | /** Copying constructor that clones an existing instance. */ |
| 224 | public ServiceDependencyImpl(ServiceDependencyImpl prototype) { |
| 225 | super(prototype); |
Marcel Offermans | e7baff5 | 2010-12-17 08:51:52 +0000 | [diff] [blame] | 226 | synchronized (prototype) { |
| 227 | m_context = prototype.m_context; |
| 228 | m_autoConfig = prototype.m_autoConfig; |
| 229 | m_trackedServiceName = prototype.m_trackedServiceName; |
| 230 | m_nullObject = prototype.m_nullObject; |
| 231 | m_trackedServiceFilter = prototype.m_trackedServiceFilter; |
| 232 | m_trackedServiceFilterUnmodified = prototype.m_trackedServiceFilterUnmodified; |
| 233 | m_trackedServiceReference = prototype.m_trackedServiceReference; |
| 234 | m_callbackInstance = prototype.m_callbackInstance; |
| 235 | m_callbackAdded = prototype.m_callbackAdded; |
| 236 | m_callbackChanged = prototype.m_callbackChanged; |
| 237 | m_callbackRemoved = prototype.m_callbackRemoved; |
Xander Uiterlinden | 30303d6 | 2012-07-11 14:19:33 +0000 | [diff] [blame^] | 238 | m_callbackSwapped = prototype.m_callbackSwapped; |
Marcel Offermans | e7baff5 | 2010-12-17 08:51:52 +0000 | [diff] [blame] | 239 | m_autoConfigInstance = prototype.m_autoConfigInstance; |
| 240 | m_defaultImplementation = prototype.m_defaultImplementation; |
| 241 | } |
Marcel Offermans | b1959f4 | 2010-07-01 12:23:51 +0000 | [diff] [blame] | 242 | } |
| 243 | |
| 244 | public Dependency createCopy() { |
| 245 | return new ServiceDependencyImpl(this); |
| 246 | } |
| 247 | |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 248 | public synchronized boolean isAutoConfig() { |
| 249 | return m_autoConfig; |
| 250 | } |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 251 | |
Marcel Offermans | b196d72 | 2009-11-26 17:12:12 +0000 | [diff] [blame] | 252 | public synchronized boolean isAvailable() { |
| 253 | return m_isAvailable; |
| 254 | } |
| 255 | |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 256 | public synchronized Object getService() { |
| 257 | Object service = null; |
| 258 | if (m_isStarted) { |
| 259 | service = m_tracker.getService(); |
| 260 | } |
Marcel Offermans | 001db05 | 2009-12-08 08:58:40 +0000 | [diff] [blame] | 261 | if (service == null && isAutoConfig()) { |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 262 | service = getDefaultImplementation(); |
| 263 | if (service == null) { |
| 264 | service = getNullObject(); |
| 265 | } |
| 266 | } |
| 267 | return service; |
| 268 | } |
| 269 | |
| 270 | public Object lookupService() { |
| 271 | Object service = null; |
| 272 | if (m_isStarted) { |
Marcel Offermans | 001db05 | 2009-12-08 08:58:40 +0000 | [diff] [blame] | 273 | service = getService(); |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 274 | } |
| 275 | else { |
| 276 | ServiceReference[] refs = null; |
| 277 | ServiceReference ref = null; |
| 278 | if (m_trackedServiceName != null) { |
| 279 | if (m_trackedServiceFilter != null) { |
| 280 | try { |
| 281 | refs = m_context.getServiceReferences(m_trackedServiceName.getName(), m_trackedServiceFilter); |
| 282 | if (refs != null) { |
| 283 | Arrays.sort(refs, COMPARATOR); |
| 284 | ref = refs[0]; |
| 285 | } |
| 286 | } |
| 287 | catch (InvalidSyntaxException e) { |
| 288 | throw new IllegalStateException("Invalid filter definition for dependency."); |
| 289 | } |
| 290 | } |
| 291 | else if (m_trackedServiceReference != null) { |
| 292 | ref = m_trackedServiceReference; |
| 293 | } |
| 294 | else { |
| 295 | ref = m_context.getServiceReference(m_trackedServiceName.getName()); |
| 296 | } |
| 297 | if (ref != null) { |
| 298 | service = m_context.getService(ref); |
| 299 | } |
| 300 | } |
| 301 | else { |
| 302 | throw new IllegalStateException("Could not lookup dependency, no service name specified."); |
| 303 | } |
| 304 | } |
Marcel Offermans | 001db05 | 2009-12-08 08:58:40 +0000 | [diff] [blame] | 305 | if (service == null && isAutoConfig()) { |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 306 | service = getDefaultImplementation(); |
| 307 | if (service == null) { |
| 308 | service = getNullObject(); |
| 309 | } |
| 310 | } |
| 311 | return service; |
| 312 | } |
Marcel Offermans | b1959f4 | 2010-07-01 12:23:51 +0000 | [diff] [blame] | 313 | |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 314 | // TODO lots of duplication in lookupService() |
| 315 | public ServiceReference lookupServiceReference() { |
| 316 | ServiceReference service = null; |
| 317 | if (m_isStarted) { |
| 318 | service = m_tracker.getServiceReference(); |
| 319 | } |
| 320 | else { |
| 321 | ServiceReference[] refs = null; |
| 322 | ServiceReference ref = null; |
| 323 | if (m_trackedServiceName != null) { |
| 324 | if (m_trackedServiceFilter != null) { |
| 325 | try { |
| 326 | refs = m_context.getServiceReferences(m_trackedServiceName.getName(), m_trackedServiceFilter); |
| 327 | if (refs != null) { |
| 328 | Arrays.sort(refs, COMPARATOR); |
| 329 | ref = refs[0]; |
| 330 | } |
| 331 | } |
| 332 | catch (InvalidSyntaxException e) { |
| 333 | throw new IllegalStateException("Invalid filter definition for dependency."); |
| 334 | } |
| 335 | } |
| 336 | else if (m_trackedServiceReference != null) { |
| 337 | ref = m_trackedServiceReference; |
| 338 | } |
| 339 | else { |
| 340 | ref = m_context.getServiceReference(m_trackedServiceName.getName()); |
| 341 | } |
| 342 | if (ref != null) { |
| 343 | service = ref; |
| 344 | } |
| 345 | } |
| 346 | else { |
| 347 | throw new IllegalStateException("Could not lookup dependency, no service name specified."); |
| 348 | } |
| 349 | } |
| 350 | return service; |
| 351 | } |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 352 | |
| 353 | private Object getNullObject() { |
| 354 | if (m_nullObject == null) { |
| 355 | Class trackedServiceName; |
| 356 | synchronized (this) { |
| 357 | trackedServiceName = m_trackedServiceName; |
| 358 | } |
| 359 | try { |
| 360 | m_nullObject = Proxy.newProxyInstance(trackedServiceName.getClassLoader(), new Class[] {trackedServiceName}, new DefaultNullObject()); |
| 361 | } |
| 362 | catch (Exception e) { |
| 363 | m_logger.log(Logger.LOG_ERROR, "Could not create null object for " + trackedServiceName + ".", e); |
| 364 | } |
| 365 | } |
| 366 | return m_nullObject; |
| 367 | } |
| 368 | |
| 369 | private Object getDefaultImplementation() { |
| 370 | if (m_defaultImplementation != null) { |
| 371 | if (m_defaultImplementation instanceof Class) { |
| 372 | try { |
| 373 | m_defaultImplementationInstance = ((Class) m_defaultImplementation).newInstance(); |
| 374 | } |
| 375 | catch (Exception e) { |
| 376 | m_logger.log(Logger.LOG_ERROR, "Could not create default implementation instance of class " + m_defaultImplementation + ".", e); |
| 377 | } |
| 378 | } |
| 379 | else { |
| 380 | m_defaultImplementationInstance = m_defaultImplementation; |
| 381 | } |
| 382 | } |
| 383 | return m_defaultImplementationInstance; |
| 384 | } |
| 385 | |
| 386 | public synchronized Class getInterface() { |
| 387 | return m_trackedServiceName; |
| 388 | } |
| 389 | |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 390 | public void start(DependencyService service) { |
| 391 | boolean needsStarting = false; |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 392 | synchronized (this) { |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 393 | m_services.add(service); |
| 394 | if (!m_isStarted) { |
| 395 | if (m_trackedServiceName != null) { |
| 396 | if (m_trackedServiceFilter != null) { |
| 397 | try { |
| 398 | m_tracker = new ServiceTracker(m_context, m_context.createFilter(m_trackedServiceFilter), this); |
| 399 | } |
| 400 | catch (InvalidSyntaxException e) { |
Marcel Offermans | ad76067 | 2010-03-03 15:30:01 +0000 | [diff] [blame] | 401 | throw new IllegalStateException("Invalid filter definition for dependency: " + m_trackedServiceFilter); |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 402 | } |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 403 | } |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 404 | else if (m_trackedServiceReference != null) { |
| 405 | m_tracker = new ServiceTracker(m_context, m_trackedServiceReference, this); |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 406 | } |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 407 | else { |
| 408 | m_tracker = new ServiceTracker(m_context, m_trackedServiceName.getName(), this); |
| 409 | } |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 410 | } |
| 411 | else { |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 412 | throw new IllegalStateException("Could not create tracker for dependency, no service name specified."); |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 413 | } |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 414 | m_isStarted = true; |
| 415 | needsStarting = true; |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 416 | } |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 417 | } |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 418 | if (needsStarting) { |
| 419 | m_tracker.open(); |
| 420 | } |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 421 | } |
| 422 | |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 423 | public void stop(DependencyService service) { |
| 424 | boolean needsStopping = false; |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 425 | synchronized (this) { |
Marcel Offermans | cae6136 | 2009-12-01 08:37:10 +0000 | [diff] [blame] | 426 | if (m_services.size() == 1 && m_services.contains(service)) { |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 427 | m_isStarted = false; |
| 428 | needsStopping = true; |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 429 | } |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 430 | } |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 431 | if (needsStopping) { |
| 432 | m_tracker.close(); |
| 433 | m_tracker = null; |
| 434 | } |
Marcel Offermans | 1c944ec | 2010-10-11 13:55:02 +0000 | [diff] [blame] | 435 | //moved this down |
| 436 | synchronized (this) { |
| 437 | m_services.remove(service); |
| 438 | } |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 439 | } |
| 440 | |
| 441 | public Object addingService(ServiceReference ref) { |
| 442 | Object service = m_context.getService(ref); |
| 443 | // first check to make sure the service is actually an instance of our service |
| 444 | if (!m_trackedServiceName.isInstance(service)) { |
| 445 | return null; |
| 446 | } |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 447 | return service; |
| 448 | } |
| 449 | |
| 450 | public void addedService(ServiceReference ref, Object service) { |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 451 | boolean makeAvailable = makeAvailable(); |
| 452 | |
Marcel Offermans | 203bdad | 2009-12-04 09:23:04 +0000 | [diff] [blame] | 453 | Object[] services; |
| 454 | synchronized (this) { |
| 455 | services = m_services.toArray(); |
| 456 | } |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 457 | for (int i = 0; i < services.length; i++) { |
| 458 | DependencyService ds = (DependencyService) services[i]; |
| 459 | if (makeAvailable) { |
Marcel Offermans | fea1484 | 2010-10-14 14:45:36 +0000 | [diff] [blame] | 460 | if (ds.isInstantiated() && isInstanceBound() && isRequired()) { |
| 461 | invokeAdded(ds, ref, service); |
| 462 | } |
Pierre De Rop | 1785c33 | 2010-06-11 06:03:53 +0000 | [diff] [blame] | 463 | // The dependency callback will be defered until all required dependency are available. |
| 464 | ds.dependencyAvailable(this); |
| 465 | if (!isRequired()) { |
| 466 | // For optional dependency, we always invoke callback, because at this point, we know |
| 467 | // that the service has been started, and the service start method has been called. |
| 468 | // (See the ServiceImpl.bindService method, which will activate optional dependencies using |
| 469 | // startTrackingOptional() method). |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 470 | invokeAdded(ds, ref, service); |
| 471 | } |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 472 | } |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 473 | else { |
| 474 | ds.dependencyChanged(this); |
Pierre De Rop | 1785c33 | 2010-06-11 06:03:53 +0000 | [diff] [blame] | 475 | // At this point, either the dependency is optional (meaning that the service has been started, |
| 476 | // because if not, then our dependency would not be active); or the dependency is required, |
| 477 | // meaning that either the service is not yet started, or already started. |
| 478 | // In all cases, we have to inject the required dependency. |
Marcel Offermans | 09e14aa | 2010-11-25 13:36:23 +0000 | [diff] [blame] | 479 | |
| 480 | // we only try to invoke the method here if we are really already instantiated |
| 481 | if (ds.isInstantiated() && ds.getCompositionInstances().length > 0) { |
| 482 | invokeAdded(ds, ref, service); |
| 483 | } |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 484 | } |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 485 | } |
| 486 | } |
| 487 | |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 488 | public void modifiedService(ServiceReference ref, Object service) { |
Marcel Offermans | 203bdad | 2009-12-04 09:23:04 +0000 | [diff] [blame] | 489 | Object[] services; |
| 490 | synchronized (this) { |
| 491 | services = m_services.toArray(); |
| 492 | } |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 493 | for (int i = 0; i < services.length; i++) { |
| 494 | DependencyService ds = (DependencyService) services[i]; |
| 495 | ds.dependencyChanged(this); |
| 496 | if (ds.isRegistered()) { |
| 497 | invokeChanged(ds, ref, service); |
| 498 | } |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 499 | } |
| 500 | } |
| 501 | |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 502 | public void removedService(ServiceReference ref, Object service) { |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 503 | boolean makeUnavailable = makeUnavailable(); |
| 504 | |
Marcel Offermans | 203bdad | 2009-12-04 09:23:04 +0000 | [diff] [blame] | 505 | Object[] services; |
| 506 | synchronized (this) { |
| 507 | services = m_services.toArray(); |
| 508 | } |
Marcel Offermans | 1c944ec | 2010-10-11 13:55:02 +0000 | [diff] [blame] | 509 | |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 510 | for (int i = 0; i < services.length; i++) { |
| 511 | DependencyService ds = (DependencyService) services[i]; |
| 512 | if (makeUnavailable) { |
| 513 | ds.dependencyUnavailable(this); |
Marcel Offermans | fea1484 | 2010-10-14 14:45:36 +0000 | [diff] [blame] | 514 | if (!isRequired() || (ds.isInstantiated() && isInstanceBound())) { |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 515 | invokeRemoved(ds, ref, service); |
| 516 | } |
| 517 | } |
| 518 | else { |
| 519 | ds.dependencyChanged(this); |
| 520 | invokeRemoved(ds, ref, service); |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 521 | } |
| 522 | } |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 523 | // unget what we got in addingService (see ServiceTracker 701.4.1) |
| 524 | m_context.ungetService(ref); |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 525 | |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 526 | } |
Marcel Offermans | 09e14aa | 2010-11-25 13:36:23 +0000 | [diff] [blame] | 527 | |
Marcel Offermans | ea89b86 | 2010-06-24 13:14:43 +0000 | [diff] [blame] | 528 | public void invokeAdded(DependencyService dependencyService, ServiceReference reference, Object service) { |
Marcel Offermans | e7baff5 | 2010-12-17 08:51:52 +0000 | [diff] [blame] | 529 | boolean added = false; |
| 530 | synchronized (m_sr) { |
| 531 | Set set = (Set) m_sr.get(dependencyService); |
| 532 | if (set == null) { |
| 533 | set = new HashSet(); |
| 534 | m_sr.put(dependencyService, set); |
| 535 | } |
Marcel Offermans | 7784e40 | 2011-01-21 20:41:50 +0000 | [diff] [blame] | 536 | added = set.add(new Tuple(reference, service)); |
Marcel Offermans | 09e14aa | 2010-11-25 13:36:23 +0000 | [diff] [blame] | 537 | } |
Marcel Offermans | 7f0cec0 | 2011-11-04 13:39:28 +0000 | [diff] [blame] | 538 | if (added) { |
| 539 | // when a changed callback is specified we might not call the added callback just yet |
| 540 | if (m_callbackSwapped != null) { |
| 541 | handleAspectAwareAdded(dependencyService, reference, service); |
Marcel Offermans | 4aa032c | 2012-01-02 19:18:22 +0000 | [diff] [blame] | 542 | } |
| 543 | else { |
Marcel Offermans | 7f0cec0 | 2011-11-04 13:39:28 +0000 | [diff] [blame] | 544 | invoke(dependencyService, reference, service, m_callbackAdded); |
| 545 | } |
Marcel Offermans | 09e14aa | 2010-11-25 13:36:23 +0000 | [diff] [blame] | 546 | } |
Marcel Offermans | ea89b86 | 2010-06-24 13:14:43 +0000 | [diff] [blame] | 547 | } |
| 548 | |
Marcel Offermans | 7f0cec0 | 2011-11-04 13:39:28 +0000 | [diff] [blame] | 549 | private void handleAspectAwareAdded(DependencyService dependencyService, ServiceReference reference, Object service) { |
| 550 | if (componentIsDependencyManagerFactory(dependencyService)) { |
| 551 | // component is either aspect or adapter factory instance, these must be ignored. |
| 552 | return; |
| 553 | } |
| 554 | boolean invokeAdded = false; |
| 555 | Integer ranking = ServiceUtil.getRankingAsInteger(reference); |
| 556 | Tuple highestRankedService = null; |
| 557 | synchronized (m_componentByRank) { |
Marcel Offermans | 7f0cec0 | 2011-11-04 13:39:28 +0000 | [diff] [blame] | 558 | Long originalServiceId = ServiceUtil.getServiceIdAsLong(reference); |
| 559 | Map componentMap = (Map) m_componentByRank.get(dependencyService); /* <Long, Map<Integer, Tuple>> */ |
| 560 | if (componentMap == null) { |
| 561 | // create new componentMap |
| 562 | componentMap = new HashMap(); /* <Long, Map<Integer, Tuple>> */ |
| 563 | m_componentByRank.put(dependencyService, componentMap); |
| 564 | } |
| 565 | Map rankings = (Map) componentMap.get(originalServiceId); /* <Integer, Tuple> */ |
| 566 | if (rankings == null) { |
| 567 | // new component added |
| 568 | rankings = new HashMap(); /* <Integer, Tuple> */ |
| 569 | componentMap.put(originalServiceId, rankings); |
| 570 | rankings.put(ranking, new Tuple(reference, service)); |
| 571 | invokeAdded = true; |
| 572 | } |
| 573 | |
| 574 | if (!invokeAdded) { |
| 575 | highestRankedService = swapHighestRankedService(dependencyService, originalServiceId, reference, service, ranking); |
| 576 | } |
| 577 | } |
| 578 | if (invokeAdded) { |
| 579 | invoke(dependencyService, reference, service, m_callbackAdded); |
| 580 | } else { |
| 581 | invokeSwappedCallback(dependencyService, highestRankedService.getServiceReference(), highestRankedService.getService(), reference, service); |
| 582 | } |
| 583 | } |
| 584 | |
Marcel Offermans | 4aa032c | 2012-01-02 19:18:22 +0000 | [diff] [blame] | 585 | private boolean componentIsDependencyManagerFactory(DependencyService dependencyService) { |
| 586 | Object component = dependencyService.getService(); |
| 587 | if (component != null) { |
| 588 | String className = component.getClass().getName(); |
| 589 | return className.startsWith("org.apache.felix.dm") |
| 590 | && !className.startsWith("org.apache.felix.dm.impl.AdapterServiceImpl$AdapterImpl") |
| 591 | && !className.startsWith("org.apache.felix.dm.test"); |
| 592 | } |
| 593 | return false; |
| 594 | } |
Marcel Offermans | 7f0cec0 | 2011-11-04 13:39:28 +0000 | [diff] [blame] | 595 | |
| 596 | private Tuple swapHighestRankedService(DependencyService dependencyService, Long serviceId, ServiceReference newReference, Object newService, Integer newRanking) { |
| 597 | // does a component with a higher ranking exists |
| 598 | synchronized (m_componentByRank) { |
| 599 | Map componentMap = (Map) m_componentByRank.get(dependencyService); /* <Long, Map<Integer, Tuple>> */ |
| 600 | Map rankings = (Map) componentMap.get(serviceId); /* <Integer, Tuple> */ |
| 601 | Entry highestEntry = getHighestRankedService(dependencyService, serviceId); /* <Integer, Tuple> */ |
| 602 | rankings.remove(highestEntry.getKey()); |
| 603 | rankings.put(newRanking, new Tuple(newReference, newService)); |
| 604 | return (Tuple) highestEntry.getValue(); |
| 605 | } |
| 606 | } |
| 607 | |
| 608 | private Entry getHighestRankedService(DependencyService dependencyService, Long serviceId) { /* <Integer, Tuple> */ |
| 609 | Entry highestEntry = null; /* <Integer, Tuple> */ |
| 610 | Map componentMap = (Map) m_componentByRank.get(dependencyService); /* <Long, Map<Integer, Tuple>> */ |
| 611 | Map rankings = (Map) componentMap.get(serviceId); /* <Integer, Tuple> */ |
| 612 | if (rankings != null) { |
| 613 | for (Iterator entryIterator = rankings.entrySet().iterator(); entryIterator.hasNext(); ) { /* <Integer, Tuple> */ |
| 614 | Entry mapEntry = (Entry) entryIterator.next(); |
| 615 | if (highestEntry == null) { |
| 616 | highestEntry = mapEntry; |
| 617 | } else { |
| 618 | if (((Integer)mapEntry.getKey()).intValue() > ((Integer)highestEntry.getKey()).intValue()) { |
| 619 | highestEntry = mapEntry; |
| 620 | } |
| 621 | } |
| 622 | } |
| 623 | } |
| 624 | return highestEntry; |
| 625 | } |
| 626 | |
| 627 | |
| 628 | |
| 629 | private boolean isLastService(DependencyService dependencyService, ServiceReference reference, Object object, Long serviceId) { |
| 630 | // get the collection of rankings |
| 631 | Map componentMap = (Map) m_componentByRank.get(dependencyService); /* <Long, Map<Integer, Tuple>> */ |
| 632 | |
| 633 | Map rankings = null; /* <Integer, Tuple> */ |
| 634 | if (componentMap != null) { |
| 635 | rankings = (Map) componentMap.get(serviceId); |
| 636 | } |
| 637 | // if there is only one element left in the collection of rankings |
| 638 | // and this last element has the same ranking as the supplied service (in other words, it is the same) |
| 639 | // then this is the last service |
| 640 | // NOTE: it is possible that there is only one element, but that it's not equal to the supplied service, |
| 641 | // because an aspect on top of the original service is being removed (but the original service is still |
| 642 | // there). That in turn triggers: |
| 643 | // 1) a call to added(original-service) |
| 644 | // 2) that causes a swap |
| 645 | // 3) a call to removed(aspect-service) <-- that's what we're talking about |
| 646 | return (componentMap != null && rankings != null && rankings.size() == 1 && ((Entry)rankings.entrySet().iterator().next()).getKey() |
| 647 | .equals(ServiceUtil.getRankingAsInteger(reference))); |
| 648 | } |
| 649 | |
| 650 | |
Marcel Offermans | ea89b86 | 2010-06-24 13:14:43 +0000 | [diff] [blame] | 651 | public void invokeChanged(DependencyService dependencyService, ServiceReference reference, Object service) { |
| 652 | invoke(dependencyService, reference, service, m_callbackChanged); |
| 653 | } |
| 654 | |
Marcel Offermans | b196d72 | 2009-11-26 17:12:12 +0000 | [diff] [blame] | 655 | public void invokeRemoved(DependencyService dependencyService, ServiceReference reference, Object service) { |
Marcel Offermans | e7baff5 | 2010-12-17 08:51:52 +0000 | [diff] [blame] | 656 | boolean removed = false; |
| 657 | synchronized (m_sr) { |
| 658 | Set set = (Set) m_sr.get(dependencyService); |
Marcel Offermans | 7784e40 | 2011-01-21 20:41:50 +0000 | [diff] [blame] | 659 | removed = (set != null && set.remove(new Tuple(reference, service))); |
Marcel Offermans | e7baff5 | 2010-12-17 08:51:52 +0000 | [diff] [blame] | 660 | } |
| 661 | if (removed) { |
Marcel Offermans | 7f0cec0 | 2011-11-04 13:39:28 +0000 | [diff] [blame] | 662 | if (m_callbackSwapped != null) { |
| 663 | handleAspectAwareRemoved(dependencyService, reference, service); |
Marcel Offermans | 4aa032c | 2012-01-02 19:18:22 +0000 | [diff] [blame] | 664 | } |
| 665 | else { |
Marcel Offermans | 7f0cec0 | 2011-11-04 13:39:28 +0000 | [diff] [blame] | 666 | invoke(dependencyService, reference, service, m_callbackRemoved); |
| 667 | } |
Marcel Offermans | 09e14aa | 2010-11-25 13:36:23 +0000 | [diff] [blame] | 668 | } |
Marcel Offermans | ea89b86 | 2010-06-24 13:14:43 +0000 | [diff] [blame] | 669 | } |
Marcel Offermans | 7f0cec0 | 2011-11-04 13:39:28 +0000 | [diff] [blame] | 670 | |
| 671 | private void handleAspectAwareRemoved(DependencyService dependencyService, ServiceReference reference, Object service) { |
| 672 | if (componentIsDependencyManagerFactory(dependencyService)) { |
| 673 | // component is either aspect or adapter factory instance, these must be ignored. |
| 674 | return; |
| 675 | } |
| 676 | Long serviceId = ServiceUtil.getServiceIdAsLong(reference); |
| 677 | synchronized (m_componentByRank) { |
| 678 | if (isLastService(dependencyService, reference, service, serviceId)) { |
| 679 | invoke(dependencyService, reference, service, m_callbackRemoved); |
| 680 | } |
| 681 | Long originalServiceId = ServiceUtil.getServiceIdAsLong(reference); |
| 682 | Map componentMap = (Map) m_componentByRank.get(dependencyService); /* <Long, Map<Integer, Tuple>> */ |
| 683 | if (componentMap != null) { |
| 684 | Map rankings = (Map) componentMap.get(originalServiceId); /* <Integer, Tuple> */ |
| 685 | for (Iterator entryIterator = rankings.entrySet().iterator(); entryIterator.hasNext(); ) { |
| 686 | Entry mapEntry = (Entry) entryIterator.next(); |
| 687 | if (((Tuple)mapEntry.getValue()).getServiceReference().equals(reference)) { |
| 688 | // remove the reference |
| 689 | rankings.remove(mapEntry.getKey()); |
| 690 | } |
| 691 | } |
| 692 | if (rankings.size() == 0) { |
| 693 | componentMap.remove(originalServiceId); |
| 694 | } |
| 695 | if (componentMap.size() == 0) { |
| 696 | m_componentByRank.remove(dependencyService); |
| 697 | } |
| 698 | } |
| 699 | } |
| 700 | } |
Marcel Offermans | ea89b86 | 2010-06-24 13:14:43 +0000 | [diff] [blame] | 701 | |
| 702 | public void invoke(DependencyService dependencyService, ServiceReference reference, Object service, String name) { |
| 703 | if (name != null) { |
| 704 | dependencyService.invokeCallbackMethod(getCallbackInstances(dependencyService), name, |
Marcel Offermans | 706fb27 | 2010-11-15 12:52:58 +0000 | [diff] [blame] | 705 | new Class[][] { |
| 706 | {Component.class, ServiceReference.class, m_trackedServiceName}, {Component.class, ServiceReference.class, Object.class}, {Component.class, ServiceReference.class}, {Component.class, m_trackedServiceName}, {Component.class, Object.class}, {Component.class}, {Component.class, Map.class, m_trackedServiceName}, |
| 707 | {ServiceReference.class, m_trackedServiceName}, {ServiceReference.class, Object.class}, {ServiceReference.class}, {m_trackedServiceName}, {Object.class}, {}, {Map.class, m_trackedServiceName} |
| 708 | }, |
| 709 | new Object[][] { |
| 710 | {dependencyService, reference, service}, {dependencyService, reference, service}, {dependencyService, reference}, {dependencyService, service}, {dependencyService, service}, {dependencyService}, {dependencyService, new ServicePropertiesMap(reference), service}, |
| 711 | {reference, service}, {reference, service}, {reference}, {service}, {service}, {}, {new ServicePropertiesMap(reference), service} |
| 712 | } |
Marcel Offermans | b196d72 | 2009-11-26 17:12:12 +0000 | [diff] [blame] | 713 | ); |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 714 | } |
| 715 | } |
Marcel Offermans | 7f0cec0 | 2011-11-04 13:39:28 +0000 | [diff] [blame] | 716 | |
| 717 | private void invokeSwappedCallback(DependencyService component, ServiceReference previousReference, Object previous, ServiceReference currentServiceReference, |
| 718 | Object current) { |
Xander Uiterlinden | 1791999 | 2012-05-03 07:16:53 +0000 | [diff] [blame] | 719 | // sanity check on the service references |
| 720 | Integer oldRank = (Integer) previousReference.getProperty(Constants.SERVICE_RANKING); |
| 721 | Integer newRank = (Integer) currentServiceReference.getProperty(Constants.SERVICE_RANKING); |
| 722 | |
| 723 | if (oldRank != null && newRank != null && oldRank.equals(newRank)) { |
| 724 | throw new IllegalStateException("Attempt to swap a service for a service with the same rank! previousReference: " + previousReference + ", currentReference: " + currentServiceReference); |
| 725 | } |
| 726 | |
Marcel Offermans | 7f0cec0 | 2011-11-04 13:39:28 +0000 | [diff] [blame] | 727 | component.invokeCallbackMethod(getCallbackInstances(component), m_callbackSwapped, new Class[][] { { m_trackedServiceName, m_trackedServiceName }, |
| 728 | { Object.class, Object.class }, { ServiceReference.class, m_trackedServiceName, ServiceReference.class, m_trackedServiceName }, |
| 729 | { ServiceReference.class, Object.class, ServiceReference.class, Object.class } }, new Object[][] { { previous, current }, |
| 730 | { previous, current }, { previousReference, previous, currentServiceReference, current }, |
| 731 | { previousReference, previous, currentServiceReference, current } }); |
| 732 | } |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 733 | |
Marcel Offermans | 74363c3 | 2009-11-23 19:56:08 +0000 | [diff] [blame] | 734 | protected synchronized boolean makeAvailable() { |
Marcel Offermans | b196d72 | 2009-11-26 17:12:12 +0000 | [diff] [blame] | 735 | if (!isAvailable()) { |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 736 | m_isAvailable = true; |
| 737 | return true; |
| 738 | } |
| 739 | return false; |
| 740 | } |
| 741 | |
| 742 | private synchronized boolean makeUnavailable() { |
Marcel Offermans | b196d72 | 2009-11-26 17:12:12 +0000 | [diff] [blame] | 743 | if ((isAvailable()) && (m_tracker.getServiceReference() == null)) { |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 744 | m_isAvailable = false; |
| 745 | return true; |
| 746 | } |
| 747 | return false; |
| 748 | } |
| 749 | |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 750 | private synchronized Object[] getCallbackInstances(DependencyService dependencyService) { |
| 751 | if (m_callbackInstance == null) { |
| 752 | return dependencyService.getCompositionInstances(); |
| 753 | } |
| 754 | else { |
| 755 | return new Object[] { m_callbackInstance }; |
| 756 | } |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 757 | } |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 758 | |
| 759 | // ----- CREATION |
| 760 | |
| 761 | /** |
| 762 | * Sets the name of the service that should be tracked. |
| 763 | * |
| 764 | * @param serviceName the name of the service |
| 765 | * @return this service dependency |
| 766 | */ |
| 767 | public synchronized ServiceDependency setService(Class serviceName) { |
Marcel Offermans | 8a1fa51 | 2011-03-08 15:33:01 +0000 | [diff] [blame] | 768 | setService(serviceName, null, null); |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 769 | return this; |
| 770 | } |
| 771 | |
| 772 | /** |
| 773 | * Sets the name of the service that should be tracked. You can either specify |
Marcel Offermans | 8a1fa51 | 2011-03-08 15:33:01 +0000 | [diff] [blame] | 774 | * only the name, only the filter, or the name and a filter. |
| 775 | * <p> |
| 776 | * If you specify name and filter, the filter is used |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 777 | * to track the service and should only return services of the type that was specified |
| 778 | * in the name. To make sure of this, the filter is actually extended internally to |
| 779 | * filter on the correct name. |
Marcel Offermans | 8a1fa51 | 2011-03-08 15:33:01 +0000 | [diff] [blame] | 780 | * <p> |
| 781 | * If you specify only the filter, the name is assumed to be a service of type |
| 782 | * <code>Object</code> which means that, when auto configuration is on, instances |
| 783 | * of that service will be injected in any field of type <code>Object</code>. |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 784 | * |
| 785 | * @param serviceName the name of the service |
| 786 | * @param serviceFilter the filter condition |
| 787 | * @return this service dependency |
| 788 | */ |
| 789 | public synchronized ServiceDependency setService(Class serviceName, String serviceFilter) { |
Marcel Offermans | 8a1fa51 | 2011-03-08 15:33:01 +0000 | [diff] [blame] | 790 | setService(serviceName, null, serviceFilter); |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 791 | return this; |
| 792 | } |
Marcel Offermans | a83c25a | 2009-12-22 13:38:38 +0000 | [diff] [blame] | 793 | |
Marcel Offermans | 8a1fa51 | 2011-03-08 15:33:01 +0000 | [diff] [blame] | 794 | /** |
| 795 | * Sets the name of the service that should be tracked. The name is assumed to be |
| 796 | * a service of type <code>Object</code> which means that, when auto configuration |
| 797 | * is on, instances of that service will be injected in any field of type |
| 798 | * <code>Object</code>. |
| 799 | * |
| 800 | * @param serviceFilter the filter condition |
| 801 | * @return this service dependency |
| 802 | */ |
Marcel Offermans | a83c25a | 2009-12-22 13:38:38 +0000 | [diff] [blame] | 803 | public synchronized ServiceDependency setService(String serviceFilter) { |
Marcel Offermans | a83c25a | 2009-12-22 13:38:38 +0000 | [diff] [blame] | 804 | if (serviceFilter == null) { |
| 805 | throw new IllegalArgumentException("Service filter cannot be null."); |
| 806 | } |
Marcel Offermans | 8a1fa51 | 2011-03-08 15:33:01 +0000 | [diff] [blame] | 807 | setService(null, null, serviceFilter); |
Marcel Offermans | a83c25a | 2009-12-22 13:38:38 +0000 | [diff] [blame] | 808 | return this; |
| 809 | } |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 810 | |
| 811 | /** |
Marcel Offermans | 8a1fa51 | 2011-03-08 15:33:01 +0000 | [diff] [blame] | 812 | * Sets the name of the service that should be tracked. By specifying the service |
| 813 | * reference of the service you want to track, you can directly track a single |
| 814 | * service. The name you use must match the type of service referred to by the |
| 815 | * service reference and it is up to you to make sure that is the case. |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 816 | * |
| 817 | * @param serviceName the name of the service |
| 818 | * @param serviceReference the service reference to track |
| 819 | * @return this service dependency |
| 820 | */ |
| 821 | public synchronized ServiceDependency setService(Class serviceName, ServiceReference serviceReference) { |
Marcel Offermans | 8a1fa51 | 2011-03-08 15:33:01 +0000 | [diff] [blame] | 822 | setService(serviceName, serviceReference, null); |
| 823 | return this; |
| 824 | } |
| 825 | |
| 826 | /** Internal method to set the name, service reference and/or filter. */ |
| 827 | private void setService(Class serviceName, ServiceReference serviceReference, String serviceFilter) { |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 828 | ensureNotActive(); |
| 829 | if (serviceName == null) { |
Marcel Offermans | 8a1fa51 | 2011-03-08 15:33:01 +0000 | [diff] [blame] | 830 | m_trackedServiceName = Object.class; |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 831 | } |
Marcel Offermans | 8a1fa51 | 2011-03-08 15:33:01 +0000 | [diff] [blame] | 832 | else { |
| 833 | m_trackedServiceName = serviceName; |
| 834 | } |
| 835 | if (serviceFilter != null) { |
| 836 | m_trackedServiceFilterUnmodified = serviceFilter; |
| 837 | if (serviceName == null) { |
| 838 | m_trackedServiceFilter = serviceFilter; |
| 839 | } |
| 840 | else { |
| 841 | m_trackedServiceFilter ="(&(" + Constants.OBJECTCLASS + "=" + serviceName.getName() + ")" + serviceFilter + ")"; |
| 842 | } |
| 843 | } |
| 844 | else { |
| 845 | m_trackedServiceFilterUnmodified = null; |
| 846 | m_trackedServiceFilter = null; |
| 847 | } |
| 848 | if (serviceReference != null) { |
| 849 | m_trackedServiceReference = serviceReference; |
| 850 | if (serviceFilter != null) { |
| 851 | throw new IllegalArgumentException("Cannot specify both a filter and a service reference."); |
| 852 | } |
| 853 | } |
| 854 | else { |
| 855 | m_trackedServiceReference = null; |
| 856 | } |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 857 | } |
| 858 | |
| 859 | /** |
| 860 | * Sets the default implementation for this service dependency. You can use this to supply |
| 861 | * your own implementation that will be used instead of a Null Object when the dependency is |
| 862 | * not available. This is also convenient if the service dependency is not an interface |
| 863 | * (which would cause the Null Object creation to fail) but a class. |
| 864 | * |
| 865 | * @param implementation the instance to use or the class to instantiate if you want to lazily |
| 866 | * instantiate this implementation |
| 867 | * @return this service dependency |
| 868 | */ |
| 869 | public synchronized ServiceDependency setDefaultImplementation(Object implementation) { |
| 870 | ensureNotActive(); |
| 871 | m_defaultImplementation = implementation; |
| 872 | return this; |
| 873 | } |
| 874 | |
| 875 | /** |
| 876 | * Sets the required flag which determines if this service is required or not. |
| 877 | * |
| 878 | * @param required the required flag |
| 879 | * @return this service dependency |
| 880 | */ |
| 881 | public synchronized ServiceDependency setRequired(boolean required) { |
| 882 | ensureNotActive(); |
Marcel Offermans | b196d72 | 2009-11-26 17:12:12 +0000 | [diff] [blame] | 883 | setIsRequired(required); |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 884 | return this; |
| 885 | } |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 886 | |
| 887 | public ServiceDependency setInstanceBound(boolean isInstanceBound) { |
Marcel Offermans | 61a8114 | 2010-04-02 15:16:50 +0000 | [diff] [blame] | 888 | setIsInstanceBound(isInstanceBound); |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 889 | return this; |
| 890 | } |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 891 | |
| 892 | /** |
| 893 | * Sets auto configuration for this service. Auto configuration allows the |
| 894 | * dependency to fill in any attributes in the service implementation that |
| 895 | * are of the same type as this dependency. Default is on. |
| 896 | * |
| 897 | * @param autoConfig the value of auto config |
| 898 | * @return this service dependency |
| 899 | */ |
| 900 | public synchronized ServiceDependency setAutoConfig(boolean autoConfig) { |
| 901 | ensureNotActive(); |
| 902 | m_autoConfig = autoConfig; |
| 903 | m_autoConfigInvoked = true; |
| 904 | return this; |
| 905 | } |
| 906 | |
| 907 | /** |
| 908 | * Sets auto configuration for this service. Auto configuration allows the |
| 909 | * dependency to fill in the attribute in the service implementation that |
| 910 | * has the same type and instance name. |
| 911 | * |
| 912 | * @param instanceName the name of attribute to auto config |
| 913 | * @return this service dependency |
| 914 | */ |
| 915 | public synchronized ServiceDependency setAutoConfig(String instanceName) { |
| 916 | ensureNotActive(); |
| 917 | m_autoConfig = (instanceName != null); |
| 918 | m_autoConfigInstance = instanceName; |
| 919 | m_autoConfigInvoked = true; |
| 920 | return this; |
| 921 | } |
| 922 | |
| 923 | /** |
| 924 | * Sets the callbacks for this service. These callbacks can be used as hooks whenever a |
| 925 | * dependency is added or removed. When you specify callbacks, the auto configuration |
| 926 | * feature is automatically turned off, because we're assuming you don't need it in this |
| 927 | * case. |
| 928 | * |
| 929 | * @param added the method to call when a service was added |
| 930 | * @param removed the method to call when a service was removed |
| 931 | * @return this service dependency |
| 932 | */ |
| 933 | public synchronized ServiceDependency setCallbacks(String added, String removed) { |
Marcel Offermans | 7f0cec0 | 2011-11-04 13:39:28 +0000 | [diff] [blame] | 934 | return setCallbacks((Object) null, added, null, removed); |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 935 | } |
| 936 | |
| 937 | /** |
| 938 | * Sets the callbacks for this service. These callbacks can be used as hooks whenever a |
| 939 | * dependency is added, changed or removed. When you specify callbacks, the auto |
| 940 | * configuration feature is automatically turned off, because we're assuming you don't |
| 941 | * need it in this case. |
| 942 | * |
| 943 | * @param added the method to call when a service was added |
| 944 | * @param changed the method to call when a service was changed |
| 945 | * @param removed the method to call when a service was removed |
| 946 | * @return this service dependency |
| 947 | */ |
| 948 | public synchronized ServiceDependency setCallbacks(String added, String changed, String removed) { |
Marcel Offermans | 7f0cec0 | 2011-11-04 13:39:28 +0000 | [diff] [blame] | 949 | return setCallbacks((Object) null, added, changed, removed); |
| 950 | } |
| 951 | |
| 952 | /** |
| 953 | * Sets the callbacks for this service. These callbacks can be used as hooks whenever a |
| 954 | * dependency is added, changed or removed. When you specify callbacks, the auto |
| 955 | * configuration feature is automatically turned off, because we're assuming you don't |
| 956 | * need it in this case. |
| 957 | * @param added the method to call when a service was added |
| 958 | * @param changed the method to call when a service was changed |
| 959 | * @param removed the method to call when a service was removed |
| 960 | * @param swapped the method to call when the service was swapped due to addition or |
| 961 | * removal of an aspect |
| 962 | * @return this service dependency |
| 963 | */ |
| 964 | public synchronized ServiceDependency setCallbacks(String added, String changed, String removed, String swapped) { |
| 965 | return setCallbacks((Object) null, added, changed, removed, swapped); |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 966 | } |
| 967 | |
| 968 | /** |
| 969 | * Sets the callbacks for this service. These callbacks can be used as hooks whenever a |
| 970 | * dependency is added or removed. They are called on the instance you provide. When you |
| 971 | * specify callbacks, the auto configuration feature is automatically turned off, because |
| 972 | * we're assuming you don't need it in this case. |
| 973 | * |
| 974 | * @param instance the instance to call the callbacks on |
| 975 | * @param added the method to call when a service was added |
| 976 | * @param removed the method to call when a service was removed |
| 977 | * @return this service dependency |
| 978 | */ |
| 979 | public synchronized ServiceDependency setCallbacks(Object instance, String added, String removed) { |
Marcel Offermans | 7f0cec0 | 2011-11-04 13:39:28 +0000 | [diff] [blame] | 980 | return setCallbacks(instance, added, (String) null, removed); |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 981 | } |
| 982 | |
| 983 | /** |
| 984 | * Sets the callbacks for this service. These callbacks can be used as hooks whenever a |
| 985 | * dependency is added, changed or removed. They are called on the instance you provide. When you |
| 986 | * specify callbacks, the auto configuration feature is automatically turned off, because |
| 987 | * we're assuming you don't need it in this case. |
| 988 | * |
| 989 | * @param instance the instance to call the callbacks on |
| 990 | * @param added the method to call when a service was added |
| 991 | * @param changed the method to call when a service was changed |
| 992 | * @param removed the method to call when a service was removed |
| 993 | * @return this service dependency |
| 994 | */ |
| 995 | public synchronized ServiceDependency setCallbacks(Object instance, String added, String changed, String removed) { |
Marcel Offermans | 7f0cec0 | 2011-11-04 13:39:28 +0000 | [diff] [blame] | 996 | return setCallbacks(instance, added, changed, removed, null); |
| 997 | } |
| 998 | |
| 999 | /** |
| 1000 | * Sets the callbacks for this service. These callbacks can be used as hooks whenever a |
| 1001 | * dependency is added, changed or removed. When you specify callbacks, the auto |
| 1002 | * configuration feature is automatically turned off, because we're assuming you don't |
| 1003 | * need it in this case. |
| 1004 | * @param instance the instance to call the callbacks on |
| 1005 | * @param added the method to call when a service was added |
| 1006 | * @param changed the method to call when a service was changed |
| 1007 | * @param removed the method to call when a service was removed |
| 1008 | * @param swapped the method to call when the service was swapped due to addition or |
| 1009 | * removal of an aspect |
| 1010 | * @return this service dependency |
| 1011 | */ |
| 1012 | public synchronized ServiceDependency setCallbacks(Object instance, String added, String changed, String removed, String swapped) { |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 1013 | ensureNotActive(); |
| 1014 | // if at least one valid callback is specified, we turn off auto configuration, unless |
| 1015 | // someone already explicitly invoked autoConfig |
Marcel Offermans | 7f0cec0 | 2011-11-04 13:39:28 +0000 | [diff] [blame] | 1016 | if ((added != null || removed != null || changed != null || swapped != null) && ! m_autoConfigInvoked) { |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 1017 | setAutoConfig(false); |
| 1018 | } |
Marcel Offermans | 7f0cec0 | 2011-11-04 13:39:28 +0000 | [diff] [blame] | 1019 | m_callbackInstance = instance; |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 1020 | m_callbackAdded = added; |
| 1021 | m_callbackChanged = changed; |
Marcel Offermans | 7f0cec0 | 2011-11-04 13:39:28 +0000 | [diff] [blame] | 1022 | m_callbackRemoved = removed; |
| 1023 | m_callbackSwapped = swapped; |
| 1024 | return this; |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 1025 | } |
| 1026 | |
| 1027 | private void ensureNotActive() { |
| 1028 | if (m_tracker != null) { |
| 1029 | throw new IllegalStateException("Cannot modify state while active."); |
| 1030 | } |
| 1031 | } |
| 1032 | |
| 1033 | public synchronized String toString() { |
| 1034 | return "ServiceDependency[" + m_trackedServiceName + " " + m_trackedServiceFilterUnmodified + "]"; |
| 1035 | } |
| 1036 | |
| 1037 | public String getAutoConfigName() { |
| 1038 | return m_autoConfigInstance; |
| 1039 | } |
Marcel Offermans | 001db05 | 2009-12-08 08:58:40 +0000 | [diff] [blame] | 1040 | |
| 1041 | public Object getAutoConfigInstance() { |
| 1042 | return lookupService(); |
| 1043 | } |
| 1044 | |
| 1045 | public Class getAutoConfigType() { |
| 1046 | return getInterface(); |
| 1047 | } |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 1048 | |
| 1049 | public String getName() { |
| 1050 | StringBuilder sb = new StringBuilder(); |
Marcel Offermans | b1959f4 | 2010-07-01 12:23:51 +0000 | [diff] [blame] | 1051 | if (m_trackedServiceName != null) { |
| 1052 | sb.append(m_trackedServiceName.getName()); |
| 1053 | if (m_trackedServiceFilterUnmodified != null) { |
| 1054 | sb.append(' '); |
| 1055 | sb.append(m_trackedServiceFilterUnmodified); |
| 1056 | } |
| 1057 | } |
| 1058 | if (m_trackedServiceReference != null) { |
Marcel Offermans | 9e50ef3 | 2010-10-07 11:37:00 +0000 | [diff] [blame] | 1059 | sb.append("{service.id=" + m_trackedServiceReference.getProperty(Constants.SERVICE_ID)+"}"); |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 1060 | } |
| 1061 | return sb.toString(); |
| 1062 | } |
| 1063 | |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 1064 | public String getType() { |
| 1065 | return "service"; |
| 1066 | } |
Marcel Offermans | 001db05 | 2009-12-08 08:58:40 +0000 | [diff] [blame] | 1067 | |
| 1068 | public void invokeAdded(DependencyService service) { |
Marcel Offermans | bde9a43 | 2010-05-11 08:01:28 +0000 | [diff] [blame] | 1069 | ServiceReference[] refs = m_tracker.getServiceReferences(); |
| 1070 | if (refs != null) { |
| 1071 | for (int i = 0; i < refs.length; i++) { |
| 1072 | ServiceReference sr = refs[i]; |
| 1073 | Object svc = m_context.getService(sr); |
| 1074 | invokeAdded(service, sr, svc); |
| 1075 | } |
| 1076 | } |
Marcel Offermans | 001db05 | 2009-12-08 08:58:40 +0000 | [diff] [blame] | 1077 | } |
Marcel Offermans | bde9a43 | 2010-05-11 08:01:28 +0000 | [diff] [blame] | 1078 | |
Marcel Offermans | 001db05 | 2009-12-08 08:58:40 +0000 | [diff] [blame] | 1079 | public void invokeRemoved(DependencyService service) { |
Marcel Offermans | e7baff5 | 2010-12-17 08:51:52 +0000 | [diff] [blame] | 1080 | Set references = null; |
| 1081 | synchronized (m_sr) { |
| 1082 | references = (Set) m_sr.get(service); |
| 1083 | } |
Marcel Offermans | 7784e40 | 2011-01-21 20:41:50 +0000 | [diff] [blame] | 1084 | Tuple[] refs = (Tuple[]) (references != null ? references.toArray(new Tuple[references.size()]) : new Tuple[0]); |
Marcel Offermans | 09e14aa | 2010-11-25 13:36:23 +0000 | [diff] [blame] | 1085 | |
| 1086 | for (int i = 0; i < refs.length; i++) { |
Marcel Offermans | 7784e40 | 2011-01-21 20:41:50 +0000 | [diff] [blame] | 1087 | ServiceReference sr = refs[i].getServiceReference(); |
| 1088 | Object svc = refs[i].getService(); |
Marcel Offermans | 09e14aa | 2010-11-25 13:36:23 +0000 | [diff] [blame] | 1089 | invokeRemoved(service, sr, svc); |
Marcel Offermans | bde9a43 | 2010-05-11 08:01:28 +0000 | [diff] [blame] | 1090 | } |
Marcel Offermans | 09e14aa | 2010-11-25 13:36:23 +0000 | [diff] [blame] | 1091 | if (references != null) { |
| 1092 | references.clear(); |
| 1093 | } |
Marcel Offermans | 001db05 | 2009-12-08 08:58:40 +0000 | [diff] [blame] | 1094 | } |
Marcel Offermans | 117aa2f | 2009-12-10 09:48:17 +0000 | [diff] [blame] | 1095 | |
| 1096 | public Dictionary getProperties() { |
Marcel Offermans | 26081d3 | 2010-07-12 12:43:42 +0000 | [diff] [blame] | 1097 | ServiceReference reference = lookupServiceReference(); |
| 1098 | Object service = lookupService(); |
| 1099 | if (reference != null) { |
| 1100 | if (m_propagateCallbackInstance != null && m_propagateCallbackMethod != null) { |
| 1101 | try { |
| 1102 | return (Dictionary) InvocationUtil.invokeCallbackMethod(m_propagateCallbackInstance, m_propagateCallbackMethod, new Class[][] {{ ServiceReference.class, Object.class }, { ServiceReference.class }}, new Object[][] {{ reference, service }, { reference }}); |
| 1103 | } |
| 1104 | catch (InvocationTargetException e) { |
| 1105 | m_logger.log(LogService.LOG_WARNING, "Exception while invoking callback method", e.getCause()); |
| 1106 | } |
| 1107 | catch (Exception e) { |
| 1108 | m_logger.log(LogService.LOG_WARNING, "Exception while trying to invoke callback method", e); |
| 1109 | } |
| 1110 | throw new IllegalStateException("Could not invoke callback"); |
| 1111 | } |
| 1112 | else { |
| 1113 | Properties props = new Properties(); |
| 1114 | String[] keys = reference.getPropertyKeys(); |
| 1115 | for (int i = 0; i < keys.length; i++) { |
| 1116 | if (!(keys[i].equals(Constants.SERVICE_ID) || keys[i].equals(Constants.SERVICE_PID))) { |
| 1117 | props.put(keys[i], reference.getProperty(keys[i])); |
| 1118 | } |
| 1119 | } |
| 1120 | return props; |
| 1121 | } |
| 1122 | } |
| 1123 | else { |
| 1124 | throw new IllegalStateException("cannot find service reference"); |
| 1125 | } |
Marcel Offermans | 117aa2f | 2009-12-10 09:48:17 +0000 | [diff] [blame] | 1126 | } |
| 1127 | |
| 1128 | public boolean isPropagated() { |
Marcel Offermans | 26081d3 | 2010-07-12 12:43:42 +0000 | [diff] [blame] | 1129 | return m_propagate; |
| 1130 | } |
| 1131 | |
| 1132 | public ServiceDependency setPropagate(boolean propagate) { |
| 1133 | ensureNotActive(); |
| 1134 | m_propagate = propagate; |
| 1135 | return this; |
| 1136 | } |
| 1137 | |
| 1138 | public ServiceDependency setPropagate(Object instance, String method) { |
| 1139 | setPropagate(instance != null && method != null); |
| 1140 | m_propagateCallbackInstance = instance; |
| 1141 | m_propagateCallbackMethod = method; |
| 1142 | return this; |
Marcel Offermans | 117aa2f | 2009-12-10 09:48:17 +0000 | [diff] [blame] | 1143 | } |
Marcel Offermans | 7f0cec0 | 2011-11-04 13:39:28 +0000 | [diff] [blame] | 1144 | |
Marcel Offermans | a962bc9 | 2009-11-21 17:59:33 +0000 | [diff] [blame] | 1145 | } |