diff options
Diffstat (limited to 'spark-common/src/main/java/me/lucko/spark/common/CommandHandler.java')
| -rw-r--r-- | spark-common/src/main/java/me/lucko/spark/common/CommandHandler.java | 418 |
1 files changed, 0 insertions, 418 deletions
diff --git a/spark-common/src/main/java/me/lucko/spark/common/CommandHandler.java b/spark-common/src/main/java/me/lucko/spark/common/CommandHandler.java deleted file mode 100644 index 701dec1..0000000 --- a/spark-common/src/main/java/me/lucko/spark/common/CommandHandler.java +++ /dev/null @@ -1,418 +0,0 @@ -/* - * This file is part of spark. - * - * Copyright (c) lucko (Luck) <luck@lucko.me> - * Copyright (c) contributors - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ - -package me.lucko.spark.common; - -import com.google.common.collect.HashMultimap; -import com.google.common.collect.SetMultimap; -import com.google.common.collect.Sets; - -import me.lucko.spark.common.http.Bytebin; -import me.lucko.spark.memory.HeapDump; -import me.lucko.spark.monitor.TickMonitor; -import me.lucko.spark.sampler.Sampler; -import me.lucko.spark.sampler.SamplerBuilder; -import me.lucko.spark.sampler.ThreadDumper; -import me.lucko.spark.sampler.ThreadGrouper; -import me.lucko.spark.sampler.TickCounter; - -import java.io.IOException; -import java.util.ArrayList; -import java.util.Arrays; -import java.util.Iterator; -import java.util.List; -import java.util.Set; -import java.util.concurrent.CompletableFuture; -import java.util.concurrent.TimeUnit; -import java.util.regex.Matcher; -import java.util.regex.Pattern; - -/** - * Abstract command handling class used by all platforms. - * - * @param <T> the sender (e.g. CommandSender) type used by the platform - */ -public abstract class CommandHandler<T> { - - /** The URL of the viewer frontend */ - private static final String VIEWER_URL = "https://sparkprofiler.github.io/?"; - /** The prefix used in all messages */ - private static final String PREFIX = "&8[&fspark&8] &7"; - - /** Guards {@link #activeSampler} */ - private final Object[] activeSamplerMutex = new Object[0]; - /** The WarmRoast instance currently running, if any */ - private Sampler activeSampler = null; - /** The tick monitor instance currently running, if any */ - private ReportingTickMonitor activeTickMonitor = null; - - - // abstract methods implemented by each platform - - protected abstract String getVersion(); - protected abstract String getLabel(); - protected abstract void sendMessage(T sender, String message); - protected abstract void sendMessage(String message); - protected abstract void sendLink(String url); - protected abstract void runAsync(Runnable r); - protected abstract ThreadDumper getDefaultThreadDumper(); - protected abstract TickCounter newTickCounter(); - - private void sendPrefixedMessage(T sender, String message) { - sendMessage(sender, PREFIX + message); - } - - private void sendPrefixedMessage(String message) { - sendMessage(PREFIX + message); - } - - public void handleCommand(T sender, String[] args) { - try { - if (args.length == 0) { - sendInfo(sender); - return; - } - - List<String> arguments = new ArrayList<>(Arrays.asList(args)); - switch (arguments.remove(0).toLowerCase()) { - case "start": - handleStart(sender, arguments); - break; - case "info": - handleInfo(sender); - break; - case "cancel": - handleCancel(sender); - break; - case "stop": - case "upload": - case "paste": - handleStop(sender); - break; - case "monitoring": - handleMonitoring(sender, arguments); - break; - case "heap": - case "memory": - handleHeap(sender); - break; - default: - sendInfo(sender); - break; - } - } catch (IllegalArgumentException e) { - sendMessage(sender, "&c" + e.getMessage()); - } - } - - private void sendInfo(T sender) { - sendPrefixedMessage(sender, "&fspark profiler &7v" + getVersion()); - sendMessage(sender, "&b&l> &7/" + getLabel() + " start"); - sendMessage(sender, " &8[&7--timeout&8 <timeout seconds>]"); - sendMessage(sender, " &8[&7--thread&8 <thread name>]"); - sendMessage(sender, " &8[&7--not-combined]"); - sendMessage(sender, " &8[&7--interval&8 <interval millis>]"); - sendMessage(sender, " &8[&7--only-ticks-over&8 <tick length millis>]"); - sendMessage(sender, "&b&l> &7/" + getLabel() + " info"); - sendMessage(sender, "&b&l> &7/" + getLabel() + " stop"); - sendMessage(sender, "&b&l> &7/" + getLabel() + " cancel"); - sendMessage(sender, "&b&l> &7/" + getLabel() + " monitoring"); - sendMessage(sender, " &8[&7--threshold&8 <percentage increase>]"); - } - - private void handleStart(T sender, List<String> args) { - SetMultimap<String, String> arguments = parseArguments(args); - - int timeoutSeconds = parseInt(arguments, "timeout", "d"); - if (timeoutSeconds != -1 && timeoutSeconds <= 10) { - sendPrefixedMessage(sender, "&cThe specified timeout is not long enough for accurate results to be formed. Please choose a value greater than 10."); - return; - } - - if (timeoutSeconds != -1 && timeoutSeconds < 30) { - sendPrefixedMessage(sender, "&7The accuracy of the output will significantly improve when sampling is able to run for longer periods. Consider setting a timeout value over 30 seconds."); - } - - int intervalMillis = parseInt(arguments, "interval", "i"); - if (intervalMillis <= 0) { - intervalMillis = 4; - } - - Set<String> threads = Sets.union(arguments.get("thread"), arguments.get("t")); - ThreadDumper threadDumper; - if (threads.isEmpty()) { - // use the server thread - threadDumper = getDefaultThreadDumper(); - } else if (threads.contains("*")) { - threadDumper = ThreadDumper.ALL; - } else { - threadDumper = new ThreadDumper.Specific(threads); - } - - ThreadGrouper threadGrouper; - if (arguments.containsKey("not-combined")) { - threadGrouper = ThreadGrouper.BY_NAME; - } else { - threadGrouper = ThreadGrouper.BY_POOL; - } - - int ticksOver = parseInt(arguments, "only-ticks-over", "o"); - TickCounter tickCounter = null; - if (ticksOver != -1) { - try { - tickCounter = newTickCounter(); - } catch (UnsupportedOperationException e) { - sendPrefixedMessage(sender, "&cTick counting is not supported!"); - return; - } - } - - Sampler sampler; - synchronized (this.activeSamplerMutex) { - if (this.activeSampler != null) { - sendPrefixedMessage(sender, "&7An active sampler is already running."); - return; - } - - sendPrefixedMessage("&7Initializing a new profiler, please wait..."); - - SamplerBuilder builder = new SamplerBuilder(); - builder.threadDumper(threadDumper); - builder.threadGrouper(threadGrouper); - if (timeoutSeconds != -1) { - builder.completeAfter(timeoutSeconds, TimeUnit.SECONDS); - } - builder.samplingInterval(intervalMillis); - if (ticksOver != -1) { - builder.ticksOver(ticksOver, tickCounter); - } - sampler = this.activeSampler = builder.start(); - - sendPrefixedMessage("&bProfiler now active!"); - if (timeoutSeconds == -1) { - sendPrefixedMessage("&7Use '/" + getLabel() + " stop' to stop profiling and upload the results."); - } else { - sendPrefixedMessage("&7The results will be automatically returned after the profiler has been running for " + timeoutSeconds + " seconds."); - } - } - - CompletableFuture<Sampler> future = sampler.getFuture(); - - // send message if profiling fails - future.whenCompleteAsync((s, throwable) -> { - if (throwable != null) { - sendPrefixedMessage("&cSampling operation failed unexpectedly. Error: " + throwable.toString()); - throwable.printStackTrace(); - } - }); - - // set activeSampler to null when complete. - future.whenCompleteAsync((s, throwable) -> { - synchronized (this.activeSamplerMutex) { - if (sampler == this.activeSampler) { - this.activeSampler = null; - } - } - }); - - // await the result - if (timeoutSeconds != -1) { - future.thenAcceptAsync(s -> { - sendPrefixedMessage("&7The active sampling operation has completed! Uploading results..."); - handleUpload(s); - }); - } - } - - private void handleInfo(T sender) { - synchronized (this.activeSamplerMutex) { - if (this.activeSampler == null) { - sendPrefixedMessage(sender, "&7There isn't an active sampling task running."); - } else { - long timeout = this.activeSampler.getEndTime(); - if (timeout == -1) { - sendPrefixedMessage(sender, "&7There is an active sampler currently running, with no defined timeout."); - } else { - long timeoutDiff = (timeout - System.currentTimeMillis()) / 1000L; - sendPrefixedMessage(sender, "&7There is an active sampler currently running, due to timeout in " + timeoutDiff + " seconds."); - } - - long runningTime = (System.currentTimeMillis() - this.activeSampler.getStartTime()) / 1000L; - sendPrefixedMessage(sender, "&7It has been sampling for " + runningTime + " seconds so far."); - } - } - } - - private void handleStop(T sender) { - synchronized (this.activeSamplerMutex) { - if (this.activeSampler == null) { - sendPrefixedMessage(sender, "&7There isn't an active sampling task running."); - } else { - this.activeSampler.cancel(); - sendPrefixedMessage("&7The active sampling operation has been stopped! Uploading results..."); - handleUpload(this.activeSampler); - this.activeSampler = null; - } - } - } - - private void handleCancel(T sender) { - synchronized (this.activeSamplerMutex) { - if (this.activeSampler == null) { - sendPrefixedMessage(sender, "&7There isn't an active sampling task running."); - } else { - this.activeSampler.cancel(); - this.activeSampler = null; - sendPrefixedMessage("&bThe active sampling task has been cancelled."); - } - } - } - - private void handleUpload(Sampler sampler) { - runAsync(() -> { - byte[] output = sampler.formCompressedDataPayload(); - try { - String pasteId = Bytebin.postCompressedContent(output); - sendPrefixedMessage("&bSampling results:"); - sendLink(VIEWER_URL + pasteId); - } catch (IOException e) { - sendPrefixedMessage("&cAn error occurred whilst uploading the results."); - e.printStackTrace(); - } - }); - } - - private void handleMonitoring(T sender, List<String> args) { - SetMultimap<String, String> arguments = parseArguments(args); - - if (this.activeTickMonitor == null) { - - int threshold = parseInt(arguments, "threshold", "t"); - if (threshold == -1) { - threshold = 100; - } - - try { - TickCounter tickCounter = newTickCounter(); - this.activeTickMonitor = new ReportingTickMonitor(tickCounter, threshold); - } catch (UnsupportedOperationException e) { - sendPrefixedMessage(sender, "&cNot supported!"); - } - } else { - this.activeTickMonitor.close(); - this.activeTickMonitor = null; - sendPrefixedMessage("&7Tick monitor disabled."); - } - } - - private void handleHeap(T sender) { - runAsync(() -> { - sendPrefixedMessage("&7Creating a new heap dump, please wait..."); - - HeapDump heapDump; - try { - heapDump = HeapDump.createNew(); - } catch (Exception e) { - sendPrefixedMessage("&cAn error occurred whilst inspecting the heap."); - e.printStackTrace(); - return; - } - - byte[] output = heapDump.formCompressedDataPayload(); - try { - String pasteId = Bytebin.postCompressedContent(output); - sendPrefixedMessage("&bHeap dump output:"); - sendLink(VIEWER_URL + pasteId); - } catch (IOException e) { - sendPrefixedMessage("&cAn error occurred whilst uploading the data."); - e.printStackTrace(); - } - }); - } - - private class ReportingTickMonitor extends TickMonitor { - ReportingTickMonitor(TickCounter tickCounter, int percentageChangeThreshold) { - super(tickCounter, percentageChangeThreshold); - } - - @Override - protected void sendMessage(String message) { - sendPrefixedMessage(message); - } - } - - private int parseInt(SetMultimap<String, String> arguments, String longArg, String shortArg) { - Iterator<String> it = Sets.union(arguments.get(longArg), arguments.get(shortArg)).iterator(); - if (it.hasNext()) { - try { - return Math.abs(Integer.parseInt(it.next())); - } catch (NumberFormatException e) { - throw new IllegalArgumentException("Invalid input for '" + longArg + "' argument. Please specify a number!"); - } - } - return -1; // undefined - } - - private static final Pattern FLAG_REGEX = Pattern.compile("--(.+)$|-([a-zA-z])$"); - - private static SetMultimap<String, String> parseArguments(List<String> args) { - SetMultimap<String, String> arguments = HashMultimap.create(); - - String flag = null; - List<String> value = null; - - for (int i = 0; i < args.size(); i++) { - String arg = args.get(i); - - Matcher matcher = FLAG_REGEX.matcher(arg); - boolean matches = matcher.matches(); - - if (flag == null || matches) { - if (!matches) { - throw new IllegalArgumentException("Expected flag at position " + i + " but got '" + arg + "' instead!"); - } - - String match = matcher.group(1); - if (match == null) { - match = matcher.group(2); - } - - // store existing value, if present - if (flag != null) { - arguments.put(flag, String.join(" ", value)); - } - - flag = match.toLowerCase(); - value = new ArrayList<>(); - } else { - // part of a value - value.add(arg); - } - } - - // store remaining value, if present - if (flag != null) { - arguments.put(flag, String.join(" ", value)); - } - - return arguments; - } - -} |