| 1 | package org.jtoolkit.essence.app.impl; |
| 2 | |
| 3 | import org.apache.commons.logging.Log; |
| 4 | import org.apache.commons.logging.LogFactory; |
| 5 | import org.jetbrains.annotations.NotNull; |
| 6 | import org.jetbrains.annotations.Nullable; |
| 7 | import org.jtoolkit.essence.app.ComponentBuilder; |
| 8 | import org.jtoolkit.essence.app.Container; |
| 9 | import org.jtoolkit.essence.app.Main; |
| 10 | import static org.jtoolkit.essence.app.Main.registerComponent; |
| 11 | import org.jtoolkit.essence.app.Runs; |
| 12 | import org.jtoolkit.essence.app.net.NetObject; |
| 13 | import org.jtoolkit.essence.app.net.ServerDataSocket; |
| 14 | import org.jtoolkit.essence.app.pojo.impl.ComponentHelper; |
| 15 | import org.jtoolkit.essence.app.pojo.impl.DataValueClass; |
| 16 | import org.jtoolkit.essence.concurrency.Immutable; |
| 17 | import org.jtoolkit.essence.concurrency.ThreadSafe; |
| 18 | import org.jtoolkit.essence.concurrency.Threads; |
| 19 | import org.jtoolkit.essence.utils.Closeable; |
| 20 | import org.jtoolkit.essence.utils.Factory; |
| 21 | import org.jtoolkit.essence.utils.IOUtils; |
| 22 | import org.jtoolkit.essence.utils.Named; |
| 23 | import static org.jtoolkit.essence.utils.StringUtils.expand; |
| 24 | import static org.jtoolkit.essence.utils.StringUtils.isSet; |
| 25 | import org.jtoolkit.essence.utils.impl.MapArray; |
| 26 | import static org.jtoolkit.essence.utils.impl.MapArray.asKeys; |
| 27 | |
| 28 | import javax.management.InstanceNotFoundException; |
| 29 | import javax.management.MBeanServer; |
| 30 | import javax.management.MalformedObjectNameException; |
| 31 | import javax.management.ObjectName; |
| 32 | import java.io.IOException; |
| 33 | import static java.lang.management.ManagementFactory.getPlatformMBeanServer; |
| 34 | import java.lang.reflect.Array; |
| 35 | import java.lang.reflect.InvocationTargetException; |
| 36 | import java.lang.reflect.Method; |
| 37 | import java.lang.reflect.Modifier; |
| 38 | import java.util.*; |
| 39 | import java.util.concurrent.*; |
| 40 | |
| 41 | /* |
| 42 | Copyright 2006 Peter Lawrey |
| 43 | |
| 44 | Licensed under the Apache License, Version 2.0 (the "License"); |
| 45 | you may not use this file except in compliance with the License. |
| 46 | You may obtain a copy of the License at |
| 47 | |
| 48 | http://www.apache.org/licenses/LICENSE-2.0 |
| 49 | |
| 50 | Unless required by applicable law or agreed to in writing, software |
| 51 | distributed under the License is distributed on an "AS IS" BASIS, |
| 52 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 53 | See the License for the specific language governing permissions and |
| 54 | limitations under the License. |
| 55 | */ |
| 56 | |
| 57 | /** |
| 58 | * @author Peter Lawrey |
| 59 | */ |
| 60 | @SuppressWarnings({"unchecked", "OverlyCoupledClass"}) |
| 61 | public class ContainerImpl implements Container { |
| 62 | private static final Log LOG = LogFactory.getLog(ContainerImpl.class); |
| 63 | private static final int RESOLVE_LOOPS = 7; |
| 64 | private static final ScheduledExecutorService[] NO_SES = new ScheduledExecutorService[0]; |
| 65 | private static final String THREAD_POOL_SIZE = "thread.pool.size"; |
| 66 | |
| 67 | private final String name; |
| 68 | private final String url; |
| 69 | private final ComponentModel componentModel; |
| 70 | private final Map<String, List<String[]>> containerConfig; |
| 71 | private final Map<String, Object> components = new LinkedHashMap<String, Object>(); |
| 72 | private final Map<String, String> componentsBoundToLP = new LinkedHashMap<String, String>(); |
| 73 | private final Map<String, ScheduledExecutorService> executors = new LinkedHashMap<String, ScheduledExecutorService>(); |
| 74 | private final Named.Source<String> properties; |
| 75 | private final Set<ObjectName> registered = new LinkedHashSet<ObjectName>(); |
| 76 | |
| 77 | @Nullable private ServerDataSocket sds = null; |
| 78 | @Nullable private Factory dsf = null; |
| 79 | |
| 80 | @Nullable private ComponentBuilder[] componentBuilders = null; |
| 81 | private boolean hasInit = false; |
| 82 | private boolean closed = false; |
| 83 | private static final String JMX_COMPONENT_GROUP = ",Component="; |
| 84 | private static final String JMX_BUILDER_GROUP = ":Builder="; |
| 85 | |
| 86 | public ContainerImpl(@NotNull String name, @NotNull String url) throws InstantiationException, IOException { |
| 87 | this.name = name; |
| 88 | this.url = url; |
| 89 | containerConfig = IOUtils.readTabs(IOUtils.getInputStream(url)); |
| 90 | componentModel = new ComponentModel(name, containerConfig); |
| 91 | Map<String, String> propertiesMap = componentModel.getContainerProperties(); |
| 92 | String serverHostname = propertiesMap.get(SERVER_HOSTNAME); |
| 93 | if (serverHostname == null) propertiesMap.put(SERVER_HOSTNAME, serverHostname = Main.SERVER_NAME); |
| 94 | |
| 95 | properties = new ContextSource<String>(name, new MapSource<String>(propertiesMap), Main.generateContexts(name + '.' + serverHostname)); |
| 96 | |
| 97 | // set system proeprties using the "System" component. |
| 98 | Named.Source<String> systemProperties = componentModel.getComponentProperties("System"); |
| 99 | for (String key : systemProperties.getNames()) { |
| 100 | String value = systemProperties.getValue(key); |
| 101 | String prev = System.getProperty(key); |
| 102 | if (prev != null && !prev.equals(value)) |
| 103 | LOG.info(name + ": System property " + key + " left as '" + prev + "' not changed to '" + value + '\''); |
| 104 | else if (prev == null) |
| 105 | System.setProperty(key, value); |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | @NotNull private ScheduledExecutorService acquireExecutor(@NotNull String threadName) { |
| 110 | synchronized (executors) { |
| 111 | ScheduledExecutorService ses = executors.get(threadName); |
| 112 | if (ses == null) { |
| 113 | Named.Source<String> threadProperties = getProperties(threadName); |
| 114 | int threadPoolSize = 1; |
| 115 | String threadPoolSizeStr = threadProperties.getValue(THREAD_POOL_SIZE); |
| 116 | if (threadPoolSizeStr != null) |
| 117 | threadPoolSize = Integer.parseInt(threadPoolSizeStr); |
| 118 | if (threadPoolSize != 1 && LOG.isInfoEnabled()) |
| 119 | LOG.info(getName() + ": Logical process started with " + threadPoolSize + " threads"); |
| 120 | executors.put(threadName, ses = Threads.createMultiSES(Threads.LOGICAL_PROCESS + name + '$' + threadName, threadPoolSize, Thread.NORM_PRIORITY)); |
| 121 | } |
| 122 | return ses; |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | public int call(@NotNull String method, boolean inEachThread) { |
| 127 | initComponents(); |
| 128 | int count = 0; |
| 129 | for (String componentName : components.keySet()) { |
| 130 | Object obj = components.get(componentName); |
| 131 | // is the component in a component builder? |
| 132 | if (obj == null) { |
| 133 | assert componentBuilders != null; |
| 134 | for (ComponentBuilder cb : componentBuilders) { |
| 135 | if (cb.getName().equals(componentName)) { |
| 136 | obj = cb; |
| 137 | break; |
| 138 | } |
| 139 | obj = cb.resolveComponent(componentName, null); |
| 140 | if (obj != null) break; |
| 141 | } |
| 142 | if (obj == null) throw new IllegalStateException("Unable to find component " + componentName); |
| 143 | } |
| 144 | try { |
| 145 | Method m = obj.getClass().getMethod(method); |
| 146 | if ((m.getModifiers() & (Modifier.PUBLIC | Modifier.STATIC)) == Modifier.PUBLIC) { |
| 147 | Callable<Void> runnable = new InvokeMethod(componentName, obj, m); |
| 148 | ComponentModel.ComponentData componentData = componentModel.getComponentData(componentName); |
| 149 | if (inEachThread && componentData != null) { |
| 150 | String lp = componentData.logicalProcess; |
| 151 | ScheduledExecutorService ses = acquireExecutor(lp); |
| 152 | ses.submit(runnable); |
| 153 | } else { |
| 154 | try { |
| 155 | runnable.call(); |
| 156 | } catch (Exception e) { |
| 157 | throw new RuntimeException(e); |
| 158 | } |
| 159 | } |
| 160 | count++; |
| 161 | } |
| 162 | } catch (NoSuchMethodException ignored) { |
| 163 | // ignored. |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | if (Runs.START.equals(method)) { |
| 168 | String serverPortStr = properties.getValue(SERVER_PORT); |
| 169 | if (sds == null && isSet(serverPortStr)) { |
| 170 | // noinspection CallToThreadYield |
| 171 | Thread.yield(); // give start a chance. |
| 172 | int serverPort = Integer.parseInt(serverPortStr); |
| 173 | try { |
| 174 | sds = new ServerDataSocket(name, serverPort, dsf = new NetObject.ServerProcessorFactory(this)); |
| 175 | String dsName = name + ":Name=server-socket"; |
| 176 | Main.registerComponent(dsName, sds, "Server socket port " + serverPortStr); |
| 177 | } catch (IOException e) { |
| 178 | throw new IllegalStateException("Unable to start server port " + serverPortStr, e); |
| 179 | } |
| 180 | // noinspection CallToThreadYield |
| 181 | Thread.yield(); // give the server a chance to start. |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | return count; |
| 186 | } |
| 187 | |
| 188 | public void close() { |
| 189 | if (!closed) { |
| 190 | call("stopping", true); |
| 191 | // noinspection CallToThreadYield |
| 192 | Thread.yield(); |
| 193 | } |
| 194 | IOUtils.close(dsf); |
| 195 | IOUtils.close(sds); |
| 196 | call("stop", false); |
| 197 | call("close", false); |
| 198 | MBeanServer bs = getPlatformMBeanServer(); |
| 199 | Set<ObjectName> instances; |
| 200 | try { |
| 201 | instances = bs.queryNames(new ObjectName(name + ":*"), null); |
| 202 | instances.addAll(registered); |
| 203 | } catch (MalformedObjectNameException e) { |
| 204 | LOG.error(getName() + ": Unexpected error", e); |
| 205 | instances = registered; |
| 206 | } |
| 207 | for (ObjectName oname : instances) { |
| 208 | try { |
| 209 | Object obj = bs.getObjectInstance(oname); |
| 210 | if (obj instanceof Closeable) { |
| 211 | Closeable closeable = (Closeable) obj; |
| 212 | if (!closeable.isClosed()) { |
| 213 | if (LOG.isInfoEnabled()) LOG.info(getName() + ": Closing resource " + closeable); |
| 214 | IOUtils.close(closeable); |
| 215 | } |
| 216 | } |
| 217 | } catch (InstanceNotFoundException e) { |
| 218 | if (LOG.isDebugEnabled()) LOG.debug(getName() + ": Unable to get for closing MBean object for " + oname, e); |
| 219 | } |
| 220 | Main.unregisterComponent(oname); |
| 221 | } |
| 222 | |
| 223 | closed = true; |
| 224 | ScheduledExecutorService[] sesArr = executors.values().toArray(NO_SES); |
| 225 | for (ScheduledExecutorService ses : sesArr) { |
| 226 | ses.shutdownNow(); |
| 227 | } |
| 228 | } |
| 229 | |
| 230 | @Nullable public Object getValue(@NotNull String componentName) { |
| 231 | return getComponent(componentName, null); |
| 232 | } |
| 233 | |
| 234 | @Nullable public <T> T getComponent(@NotNull String componentName, @Nullable Class<T> type) { |
| 235 | initComponents(); |
| 236 | T obj = (T) components.get(componentName); |
| 237 | if (obj != null) |
| 238 | return checkLP(obj, componentName, EXTERNAL); |
| 239 | assert componentBuilders != null; |
| 240 | for (ComponentBuilder cb : componentBuilders) { |
| 241 | obj = cb.resolveComponent(componentName, type); |
| 242 | if (obj != null) { |
| 243 | Object obj2 = cb.resolveComponent(componentName, null); |
| 244 | if (obj2 == null) |
| 245 | obj2 = obj; |
| 246 | String jmxName = getName() + JMX_BUILDER_GROUP + cb.getName() + JMX_COMPONENT_GROUP + componentName; |
| 247 | registerComponent(jmxName, obj2, componentName); |
| 248 | return checkLP(obj, componentName, EXTERNAL); |
| 249 | } |
| 250 | } |
| 251 | return null; |
| 252 | } |
| 253 | |
| 254 | private <T> T checkLP(T obj, String componentName, String logicalProcess) { |
| 255 | if (obj.getClass().getAnnotation(ThreadSafe.class) != null || obj.getClass().getAnnotation(Immutable.class) != null) |
| 256 | return obj; |
| 257 | |
| 258 | String lp = componentsBoundToLP.get(componentName); |
| 259 | if (lp == null) { |
| 260 | componentsBoundToLP.put(componentName, logicalProcess); |
| 261 | } else if (!lp.equals(logicalProcess)) { |
| 262 | throw new IllegalStateException(componentName + ": Is bound to, or was used by " + lp + " cannot be accessed by " + logicalProcess); |
| 263 | } |
| 264 | return obj; |
| 265 | } |
| 266 | |
| 267 | @NotNull public Set<String> getNames() { |
| 268 | initComponents(); |
| 269 | return components.keySet(); |
| 270 | } |
| 271 | |
| 272 | @NotNull public String getName() { |
| 273 | return name; |
| 274 | } |
| 275 | |
| 276 | @NotNull public Source<String> getProperties() { |
| 277 | return properties; |
| 278 | } |
| 279 | |
| 280 | @NotNull public Named.Source<String> getProperties(@NotNull String componentName) { |
| 281 | return componentModel.getComponentProperties(componentName); |
| 282 | } |
| 283 | |
| 284 | @NotNull public String getUrl() { |
| 285 | return url; |
| 286 | } |
| 287 | |
| 288 | public boolean isClosed() { |
| 289 | return closed; |
| 290 | } |
| 291 | |
| 292 | @NotNull public Set<String> remainingConfig() { |
| 293 | return containerConfig.keySet(); |
| 294 | } |
| 295 | |
| 296 | @NotNull |
| 297 | public <T> T[] removeConfigAs(@NotNull String configName, @NotNull Class<T> clazz) throws InstantiationException { |
| 298 | List<T> ret = new ArrayList<T>(); |
| 299 | List<String[]> strings = containerConfig.remove(configName); |
| 300 | if (strings != null && strings.size() > 1) { |
| 301 | String[] heading = strings.get(0); |
| 302 | Map<String, Integer> keys = asKeys(heading); |
| 303 | DataValueClass<T> ph = DataValueClass.acquire(clazz); |
| 304 | for (String[] row : strings.subList(1, strings.size())) { |
| 305 | ret.add(ph.build(new MapArray(keys, row), componentModel.pojoContext)); |
| 306 | } |
| 307 | } |
| 308 | return ret.toArray((T[]) Array.newInstance(clazz, ret.size())); |
| 309 | } |
| 310 | |
| 311 | private void initComponents() { |
| 312 | if (hasInit) return; |
| 313 | hasInit = true; |
| 314 | //// Build the Component Builders. |
| 315 | Map<String, ComponentModel.ComponentBuilderData> builders = componentModel.getContainerBuilders(); |
| 316 | componentBuilders = new ComponentBuilder[builders.size()]; |
| 317 | int count = 0; |
| 318 | for (String builderName : builders.keySet()) { |
| 319 | ComponentModel.ComponentBuilderData componentBuilderData = builders.get(builderName); |
| 320 | Class clazz = componentBuilderData.componentBuilder; |
| 321 | ComponentHelper componentHelper = ComponentHelper.acquire(clazz); |
| 322 | Named.Source<String> properties = componentModel.getComponentProperties(builderName); |
| 323 | Map<String, Object> defaults = new LinkedHashMap<String, Object>(); |
| 324 | defaults.put(DEFAULT_CONTAINER_NAME, getName()); |
| 325 | defaults.put(DEFAULT_NAME, builderName); |
| 326 | defaults.put(DEFAULT_CONTAINER, this); |
| 327 | defaults.put(DEFAULT_PURPOSE, componentBuilderData.purpose); |
| 328 | ComponentBuilder componentBuilder = (ComponentBuilder) componentHelper.build(properties, defaults, componentModel.pojoContext); |
| 329 | assert componentBuilders != null; |
| 330 | componentBuilders[count++] = componentBuilder; |
| 331 | components.put(componentBuilder.getName(), null); |
| 332 | registerComponent(getName() + JMX_BUILDER_GROUP + builderName, componentBuilder, componentBuilderData.purpose); |
| 333 | } |
| 334 | //// Build the remaining components. |
| 335 | Map<String, ComponentStatus> unresolved = new LinkedHashMap<String, ComponentStatus>(); |
| 336 | for (String componentName : componentModel.getComponentNames()) { |
| 337 | unresolved.put(componentName, new ComponentStatus(componentName)); |
| 338 | } |
| 339 | Map<String, ComponentStatus> resolved = new LinkedHashMap<String, ComponentStatus>(); |
| 340 | for (int i = 0; i < RESOLVE_LOOPS && !unresolved.isEmpty(); i++) { |
| 341 | for (String unresolvedName : unresolved.keySet().toArray(new String[unresolved.size()])) { |
| 342 | ComponentStatus cs = unresolved.get(unresolvedName); |
| 343 | assert cs != null; |
| 344 | if (!cs.attemptResolution(resolved)) continue; |
| 345 | unresolved.remove(unresolvedName); |
| 346 | resolved.put(unresolvedName, cs); |
| 347 | Object component = cs.component; |
| 348 | String description = cs.componentData.purpose; |
| 349 | if (component != null) { |
| 350 | components.put(unresolvedName, component); |
| 351 | componentsBoundToLP.put(cs.componentName, cs.componentData.logicalProcess); |
| 352 | String jmxName = getName() + ":LogicalProcess=" + Threads.LOGICAL_PROCESS + cs.componentData.logicalProcess + JMX_COMPONENT_GROUP + unresolvedName; |
| 353 | registerComponent(jmxName, component, description); |
| 354 | } |
| 355 | } |
| 356 | } |
| 357 | if (!unresolved.isEmpty()) |
| 358 | throw new IllegalArgumentException("Unable to resolve dependancies for " + unresolved.keySet()); |
| 359 | } |
| 360 | |
| 361 | class ComponentStatus { |
| 362 | final String componentName; |
| 363 | final ComponentModel.ComponentData componentData; |
| 364 | final ComponentHelper componentHelper; |
| 365 | final Named.Source<String> componentReferences; |
| 366 | final Map<String, Class> referenceTypes; |
| 367 | final Named.Source<String> componentProperties; |
| 368 | Object component = null; |
| 369 | |
| 370 | ComponentStatus(String componentName) { |
| 371 | this.componentName = componentName; |
| 372 | componentProperties = componentModel.getComponentProperties(componentName); |
| 373 | componentReferences = componentModel.getComponentReferences(componentName); |
| 374 | componentData = componentModel.getComponentData(componentName); |
| 375 | assert componentData != null; |
| 376 | //noinspection unchecked |
| 377 | componentHelper = ComponentHelper.acquire(componentData.className); |
| 378 | referenceTypes = componentHelper.getReferenceTypes(); |
| 379 | /* |
| 380 | for (String referenceTo : componentReferences.values()) { |
| 381 | if (componentModel.getComponentData(referenceTo) == null) |
| 382 | throw new IllegalArgumentException("Component " + componentName + " refers to missing component " + referenceTo); |
| 383 | } |
| 384 | */ |
| 385 | } |
| 386 | |
| 387 | public boolean attemptResolution(Map<String, ComponentStatus> resolved) { |
| 388 | final Map<String, Object> values = new LinkedHashMap<String, Object>(); |
| 389 | String logicalProcess = componentData.logicalProcess; |
| 390 | |
| 391 | LOOP: |
| 392 | for (String referenceName : componentReferences.getNames()) { |
| 393 | String referenceTo = componentReferences.getValue(referenceName); |
| 394 | if (referenceTo == null) { |
| 395 | values.put(referenceName, null); |
| 396 | continue; |
| 397 | } |
| 398 | Class type = referenceTypes.get(referenceName); |
| 399 | if (type == null) |
| 400 | throw new IllegalArgumentException(COMPONENT + componentName + |
| 401 | " has a reference " + referenceName + " but unable to determine its type in " + componentData.className); |
| 402 | // see if a component builder can resolve the reference. |
| 403 | assert componentBuilders != null; |
| 404 | for (ComponentBuilder cb : componentBuilders) { |
| 405 | // is there a version which is not locked to a logical process.? |
| 406 | Object obj = cb.resolveComponent(referenceTo, type); |
| 407 | String name; |
| 408 | if (obj != null) { |
| 409 | name = "Builder=" + cb.getName() + JMX_COMPONENT_GROUP + referenceTo; |
| 410 | } else { |
| 411 | obj = cb.resolveComponent(referenceTo, type); |
| 412 | name = "LogicalProcess=" + logicalProcess + ",Builder=" + cb.getName() + JMX_COMPONENT_GROUP + referenceTo; |
| 413 | } |
| 414 | if (obj != null) { |
| 415 | // just add the name. The object cannot be added as its type vary the object obtained. |
| 416 | components.put(referenceTo, null); |
| 417 | values.put(referenceName, obj); |
| 418 | registerComponent(getName() + ':' + name, obj, referenceTo); |
| 419 | continue LOOP; |
| 420 | } |
| 421 | } |
| 422 | |
| 423 | ComponentStatus cs = resolved.get(referenceTo); |
| 424 | if (cs == null) |
| 425 | return false; |
| 426 | Object component = cs.component; |
| 427 | values.put(referenceName, component); |
| 428 | } |
| 429 | for (String property : componentProperties.getNames()) { |
| 430 | String value = componentProperties.getValue(property); |
| 431 | assert value != null; |
| 432 | values.put(property, expand(value, properties)); |
| 433 | } |
| 434 | final Map<String, Object> defaults = new LinkedHashMap<String, Object>(); |
| 435 | defaults.put(DEFAULT_CONTAINER_NAME, getName()); |
| 436 | defaults.put(DEFAULT_NAME, componentName); |
| 437 | defaults.put(DEFAULT_PURPOSE, componentData.purpose); |
| 438 | ScheduledThreadPoolExecutor executor = (ScheduledThreadPoolExecutor) acquireExecutor(logicalProcess); |
| 439 | defaults.put(DEFAULT_EXECUTOR, executor); |
| 440 | Future<Object> obj = executor.submit(new Callable<Object>() { |
| 441 | public Object call() throws Exception { |
| 442 | return componentHelper.build(new MapSource<Object>(values), defaults, componentModel.pojoContext); |
| 443 | } |
| 444 | }); |
| 445 | try { |
| 446 | component = obj.get(); |
| 447 | int poolSize = executor.getMaximumPoolSize(); |
| 448 | if (poolSize > 1 && Threads.isNotThreadSafe(component)) |
| 449 | throw new IllegalArgumentException(getName() + ": Attempt to use non @ThreadSafe component " + componentName + " in logical process " + logicalProcess + " which has a pool size of " + poolSize); |
| 450 | } catch (InterruptedException e) { |
| 451 | throw new IllegalStateException("Interrupted creating " + componentName, e); |
| 452 | } catch (ExecutionException e) { |
| 453 | Throwable cause = e.getCause(); |
| 454 | if (cause instanceof RuntimeException) |
| 455 | throw (RuntimeException) cause; |
| 456 | throw new IllegalStateException("Failed to create " + componentName, e); |
| 457 | } |
| 458 | return true; |
| 459 | } |
| 460 | } |
| 461 | |
| 462 | private static class InvokeMethod implements Callable<Void> { |
| 463 | private final String componentName; |
| 464 | private final Object object; |
| 465 | private final Method method; |
| 466 | |
| 467 | InvokeMethod(String componentName, Object object, Method method) { |
| 468 | this.componentName = componentName; |
| 469 | this.object = object; |
| 470 | this.method = method; |
| 471 | } |
| 472 | |
| 473 | @Nullable public Void call() { |
| 474 | try { |
| 475 | method.invoke(object); |
| 476 | } catch (IllegalAccessException ignored) { |
| 477 | throw new InternalError(ignored.toString()); |
| 478 | } catch (InvocationTargetException e) { |
| 479 | LOG.error(componentName + ": Failed to call " + method, e.getCause()); |
| 480 | } |
| 481 | return null; |
| 482 | } |
| 483 | } |
| 484 | } |