buildSrc/src/main/java/cc/squirreljme/plugin/multivm/VMRunUpToDateWhen.java

   1 // -*- Mode: Java; indent-tabs-mode: t; tab-width: 4 -*-
   2 // ---------------------------------------------------------------------------
   3 // SquirrelJME
   4 //     Copyright (C) Stephanie Gawroriski <xer@multiphasicapps.net>
   5 // ---------------------------------------------------------------------------
   6 // SquirrelJME is under the GNU General Public License v3+, or later.
   7 // See license.mkd for licensing and copyright information.
   8 // ---------------------------------------------------------------------------
   9
  10 package cc.squirreljme.plugin.multivm;
  11
  12 import cc.squirreljme.plugin.multivm.ident.SourceTargetClassifier;
  13 import java.io.File;
  14 import java.io.IOException;
  15 import java.nio.file.Files;
  16 import java.nio.file.Path;
  17 import java.time.Instant;
  18 import java.util.HashSet;
  19 import java.util.Set;
  20 import org.gradle.api.Task;
  21 import org.gradle.api.specs.Spec;
  22
  23 /**
  24  * This is used to check if a test is considered invalid because one of the
  25  * inputs is no longer up to date.
  26  *
  27  * @since 2021/02/23
  28  */
  29 public class VMRunUpToDateWhen
  30         implements Spec<Task>
  31 {
  32         /** The classifier used. */
  33         protected final SourceTargetClassifier classifier;
  34
  35         /**
  36          * Initializes the handler.
  37          *
  38          * @param __classifier The classifier used.
  39          * @throws NullPointerException On null arguments.
  40          * @since 2021/02/23
  41          */
  42         public VMRunUpToDateWhen(SourceTargetClassifier __classifier)
  43                 throws NullPointerException
  44         {
  45                 if (__classifier == null)
  46                         throw new NullPointerException("NARG");
  47
  48                 this.classifier = __classifier;
  49         }
  50
  51         /**
  52          * {@inheritDoc}
  53          * @since 2021/02/23
  54          */
  55         @Override
  56         public boolean isSatisfiedBy(Task __task)
  57         {
  58                 // Get the times the output was last changed
  59                 Set<Instant> taskOuts = new HashSet<>();
  60                 for (File f : __task.getOutputs().getFiles().getFiles())
  61                         taskOuts.add(Instant.ofEpochMilli(f.lastModified()));
  62
  63                 // Determine if any of our parent dependencies were out of date
  64                 for (Path dep : VMHelpers.runClassPath(__task, this.classifier,
  65                         true))
  66                 {
  67                         Instant fileTime;
  68                         try
  69                         {
  70                                 fileTime = Files.getLastModifiedTime(dep).toInstant();
  71                         }
  72                         catch (IOException ignored)
  73                         {
  74                                 continue;
  75                         }
  76
  77                         // One of our runtime libraries is newer than our own outputs
  78                         for (Instant taskOut : taskOuts)
  79                                 if (fileTime.compareTo(taskOut) > 0)
  80                                         return false;
  81                 }
  82
  83                 // Considered up to date
  84                 return true;
  85         }
  86 }