LangtoolsIdeaAntLogger.java revision 2752:f114c0889340
1/* 2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26package idea; 27 28import org.apache.tools.ant.BuildEvent; 29import org.apache.tools.ant.BuildListener; 30import org.apache.tools.ant.DefaultLogger; 31import org.apache.tools.ant.Project; 32 33import java.util.EnumSet; 34import java.util.Stack; 35 36import static org.apache.tools.ant.Project.*; 37 38/** 39 * This class is used to wrap the IntelliJ ant logger in order to provide more meaningful 40 * output when building langtools. The basic ant output in IntelliJ can be quite cumbersome to 41 * work with, as it provides two separate views: (i) a tree view, which is good to display build task 42 * in a hierarchical fashion as they are processed; and a (ii) plain text view, which gives you 43 * the full ant output. The main problem is that javac-related messages are buried into the 44 * ant output (which is made very verbose by IntelliJ in order to support the tree view). It is 45 * not easy to figure out which node to expand in order to see the error message; switching 46 * to plain text doesn't help either, as now the output is totally flat. 47 * 48 * This logger class removes a lot of verbosity from the IntelliJ ant logger by not propagating 49 * all the events to the IntelliJ's logger. In addition, certain events are handled in a custom 50 * fashion, to generate better output during the build. 51 */ 52public final class LangtoolsIdeaAntLogger extends DefaultLogger { 53 54 /** 55 * This is just a way to pass in customized binary string predicates; 56 * 57 * TODO: replace with @code{BiPredicate<String, String>} and method reference when moving to 8 58 */ 59 enum StringBinaryPredicate { 60 CONTAINS() { 61 @Override 62 boolean apply(String s1, String s2) { 63 return s1.contains(s2); 64 } 65 }, 66 STARTS_WITH { 67 @Override 68 boolean apply(String s1, String s2) { 69 return s1.startsWith(s2); 70 } 71 }; 72 73 abstract boolean apply(String s1, String s2); 74 } 75 76 /** 77 * Various kinds of ant messages that we shall intercept 78 */ 79 enum MessageKind { 80 81 /** a javac error */ 82 JAVAC_ERROR(StringBinaryPredicate.CONTAINS, MSG_ERR, "error:", "compiler.err"), 83 /** a javac warning */ 84 JAVAC_WARNING(StringBinaryPredicate.CONTAINS, MSG_WARN, "warning:", "compiler.warn"), 85 /** a javac note */ 86 JAVAC_NOTE(StringBinaryPredicate.CONTAINS, MSG_INFO, "note:", "compiler.note"), 87 /** continuation of some javac error message */ 88 JAVAC_NESTED_DIAG(StringBinaryPredicate.STARTS_WITH, MSG_INFO, " "), 89 /** a javac crash */ 90 JAVAC_CRASH(StringBinaryPredicate.STARTS_WITH, MSG_ERR, "An exception has occurred in the compiler"), 91 /** jtreg test success */ 92 JTREG_TEST_PASSED(StringBinaryPredicate.STARTS_WITH, MSG_INFO, "Passed: "), 93 /** jtreg test failure */ 94 JTREG_TEST_FAILED(StringBinaryPredicate.STARTS_WITH, MSG_ERR, "FAILED: "), 95 /** jtreg test error */ 96 JTREG_TEST_ERROR(StringBinaryPredicate.STARTS_WITH, MSG_ERR, "Error: "), 97 /** jtreg report */ 98 JTREG_TEST_REPORT(StringBinaryPredicate.STARTS_WITH, MSG_INFO, "Report written"); 99 100 StringBinaryPredicate sbp; 101 int priority; 102 String[] keys; 103 104 MessageKind(StringBinaryPredicate sbp, int priority, String... keys) { 105 this.sbp = sbp; 106 this.priority = priority; 107 this.keys = keys; 108 } 109 110 /** 111 * Does a given message string matches this kind? 112 */ 113 boolean matches(String s) { 114 for (String key : keys) { 115 if (sbp.apply(s, key)) { 116 return true; 117 } 118 } 119 return false; 120 } 121 } 122 123 /** 124 * This enum is used to represent the list of tasks we need to keep track of during logging. 125 */ 126 enum Task { 127 /** javac task - invoked during compilation */ 128 JAVAC("javac", MessageKind.JAVAC_ERROR, MessageKind.JAVAC_WARNING, MessageKind.JAVAC_NOTE, 129 MessageKind.JAVAC_NESTED_DIAG, MessageKind.JAVAC_CRASH), 130 /** jtreg task - invoked during test execution */ 131 JTREG("jtreg", MessageKind.JTREG_TEST_PASSED, MessageKind.JTREG_TEST_FAILED, MessageKind.JTREG_TEST_ERROR, MessageKind.JTREG_TEST_REPORT), 132 /** initial synthetic task when the logger is created */ 133 ROOT("") { 134 @Override 135 boolean matches(String s) { 136 return false; 137 } 138 }, 139 /** synthetic task catching any other tasks not in this list */ 140 ANY("") { 141 @Override 142 boolean matches(String s) { 143 return true; 144 } 145 }; 146 147 String taskName; 148 MessageKind[] msgs; 149 150 Task(String taskName, MessageKind... msgs) { 151 this.taskName = taskName; 152 this.msgs = msgs; 153 } 154 155 boolean matches(String s) { 156 return s.equals(taskName); 157 } 158 } 159 160 /** 161 * This enum is used to represent the list of targets we need to keep track of during logging. 162 * A regular expression is used to match a given target name. 163 */ 164 enum Target { 165 /** jtreg target - executed when launching tests */ 166 JTREG("jtreg") { 167 @Override 168 String getDisplayMessage(BuildEvent e) { 169 return "Running jtreg tests: " + e.getProject().getProperty("jtreg.tests"); 170 } 171 }, 172 /** build bootstrap tool target - executed when bootstrapping javac */ 173 BUILD_BOOTSTRAP_JAVAC("build-bootstrap-javac-classes") { 174 @Override 175 String getDisplayMessage(BuildEvent e) { 176 return "Building bootstrap javac..."; 177 } 178 }, 179 /** build classes target - executed when building classes of given tool */ 180 BUILD_ALL_CLASSES("build-all-classes") { 181 @Override 182 String getDisplayMessage(BuildEvent e) { 183 return "Building all classes..."; 184 } 185 }, 186 /** synthetic target catching any other target not in this list */ 187 ANY("") { 188 @Override 189 String getDisplayMessage(BuildEvent e) { 190 return "Executing Ant target(s): " + e.getProject().getProperty("ant.project.invoked-targets"); 191 } 192 @Override 193 boolean matches(String msg) { 194 return true; 195 } 196 }; 197 198 String targetName; 199 200 Target(String targetName) { 201 this.targetName = targetName; 202 } 203 204 boolean matches(String msg) { 205 return msg.equals(targetName); 206 } 207 208 abstract String getDisplayMessage(BuildEvent e); 209 } 210 211 /** 212 * A custom build event used to represent status changes which should be notified inside 213 * Intellij 214 */ 215 static class StatusEvent extends BuildEvent { 216 217 /** the target to which the status update refers */ 218 Target target; 219 220 StatusEvent(BuildEvent e, Target target) { 221 super(new StatusTask(e, target.getDisplayMessage(e))); 222 this.target = target; 223 setMessage(getTask().getTaskName(), 2); 224 } 225 226 /** 227 * A custom task used to channel info regarding a status change 228 */ 229 static class StatusTask extends org.apache.tools.ant.Task { 230 StatusTask(BuildEvent event, String msg) { 231 setProject(event.getProject()); 232 setOwningTarget(event.getTarget()); 233 setTaskName(msg); 234 } 235 } 236 } 237 238 /** wrapped ant logger (IntelliJ's own logger) */ 239 DefaultLogger logger; 240 241 /** flag - is this the first target we encounter? */ 242 boolean firstTarget = true; 243 244 /** flag - should subsequenet failures be suppressed ? */ 245 boolean suppressTaskFailures = false; 246 247 /** flag - have we ran into a javac crash ? */ 248 boolean crashFound = false; 249 250 /** stack of status changes associated with pending targets */ 251 Stack<StatusEvent> statusEvents = new Stack<>(); 252 253 /** stack of pending tasks */ 254 Stack<Task> tasks = new Stack<>(); 255 256 public LangtoolsIdeaAntLogger(Project project) { 257 for (Object o : project.getBuildListeners()) { 258 if (o instanceof DefaultLogger) { 259 this.logger = (DefaultLogger)o; 260 project.removeBuildListener((BuildListener)o); 261 project.addBuildListener(this); 262 } 263 } 264 tasks.push(Task.ROOT); 265 } 266 267 @Override 268 public void buildStarted(BuildEvent event) { 269 //do nothing 270 } 271 272 @Override 273 public void buildFinished(BuildEvent event) { 274 //do nothing 275 } 276 277 @Override 278 public void targetStarted(BuildEvent event) { 279 EnumSet<Target> statusKinds = firstTarget ? 280 EnumSet.allOf(Target.class) : 281 EnumSet.complementOf(EnumSet.of(Target.ANY)); 282 283 String targetName = event.getTarget().getName(); 284 285 for (Target statusKind : statusKinds) { 286 if (statusKind.matches(targetName)) { 287 StatusEvent statusEvent = new StatusEvent(event, statusKind); 288 statusEvents.push(statusEvent); 289 logger.taskStarted(statusEvent); 290 firstTarget = false; 291 return; 292 } 293 } 294 } 295 296 @Override 297 public void targetFinished(BuildEvent event) { 298 if (!statusEvents.isEmpty()) { 299 StatusEvent lastEvent = statusEvents.pop(); 300 if (lastEvent.target.matches(event.getTarget().getName())) { 301 logger.taskFinished(lastEvent); 302 } 303 } 304 } 305 306 @Override 307 public void taskStarted(BuildEvent event) { 308 String taskName = event.getTask().getTaskName(); 309 for (Task task : Task.values()) { 310 if (task.matches(taskName)) { 311 tasks.push(task); 312 return; 313 } 314 } 315 } 316 317 @Override 318 public void taskFinished(BuildEvent event) { 319 if (tasks.peek() == Task.ROOT) { 320 //we need to 'close' the root task to get nicer output 321 logger.taskFinished(event); 322 } else if (!suppressTaskFailures && event.getException() != null) { 323 //the first (innermost) task failure should always be logged 324 event.setMessage(event.getException().toString(), 0); 325 event.setException(null); 326 //note: we turn this into a plain message to avoid stack trace being logged by Idea 327 logger.messageLogged(event); 328 suppressTaskFailures = true; 329 } 330 tasks.pop(); 331 } 332 333 @Override 334 public void messageLogged(BuildEvent event) { 335 String msg = event.getMessage(); 336 337 boolean processed = false; 338 339 if (!tasks.isEmpty()) { 340 Task task = tasks.peek(); 341 for (MessageKind messageKind : task.msgs) { 342 if (messageKind.matches(msg)) { 343 event.setMessage(msg, messageKind.priority); 344 processed = true; 345 if (messageKind == MessageKind.JAVAC_CRASH) { 346 crashFound = true; 347 } 348 break; 349 } 350 } 351 } 352 353 if (event.getPriority() == MSG_ERR || crashFound) { 354 //we log errors regardless of owning task 355 logger.messageLogged(event); 356 suppressTaskFailures = true; 357 } else if (processed) { 358 logger.messageLogged(event); 359 } 360 } 361} 362