forked from StarOpenSource/Engine
Update subsystem initialization logic
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1 changed files with 33 additions and 22 deletions
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@ -33,8 +33,9 @@ import de.staropensource.sosengine.base.logging.CrashHandler;
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import de.staropensource.sosengine.base.logging.Logger;
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import de.staropensource.sosengine.base.logging.LoggerInstance;
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import de.staropensource.sosengine.base.types.CodePart;
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import de.staropensource.sosengine.base.types.dependency.DependencySubsystemVector;
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import de.staropensource.sosengine.base.types.dependency.DependencyVector;
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import de.staropensource.sosengine.base.types.immutable.ImmutableHashMap;
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import de.staropensource.sosengine.base.types.immutable.ImmutableLinkedList;
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import de.staropensource.sosengine.base.utility.DependencyResolver;
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import de.staropensource.sosengine.base.utility.Miscellaneous;
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import de.staropensource.sosengine.base.utility.PlaceholderEngine;
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@ -84,17 +85,19 @@ public final class Engine implements SubsystemMainClass {
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/**
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* Contains a list of all registered subsystems.
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* The list is sorted after initialization order.
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*
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* @since 1-alpha1
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*
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* -- GETTER --
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* Returns a list of all registered subsystems.
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* The list is sorted after initialization order.
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*
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* @since 1-alpha1
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*/
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@NotNull
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@Getter
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private ImmutableHashMap<@NotNull SubsystemMainClass, @NotNull DependencyVector> subsystems = new ImmutableHashMap<>();
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private ImmutableLinkedList<@NotNull DependencySubsystemVector> subsystems = new ImmutableLinkedList<>();
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/**
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* Indicates if the engine is shutting down.
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@ -246,7 +249,7 @@ public final class Engine implements SubsystemMainClass {
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* @since 1-alpha1
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*/
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private void collectSubsystems() {
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Map<@NotNull SubsystemMainClass, @NotNull DependencyVector> subsystemsMap = new HashMap<>();
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ArrayList<@NotNull DependencySubsystemVector> subsystemsMutable = new ArrayList<>();
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// Scan entire classpath using the Reflections library
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Reflections reflections = new Reflections(
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@ -258,7 +261,7 @@ public final class Engine implements SubsystemMainClass {
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// Get annotated methods
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Set<@NotNull Class<?>> annotatedClasses = reflections.getTypesAnnotatedWith(EngineSubsystem.class);
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// Initialize class, get dependency vector and add to 'subsystemsMap'
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// Initialize classes, get dependency vector and add to 'subsystemsMutable'
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for (Class<?> clazz : annotatedClasses) {
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try {
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// Create new instance
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@ -271,18 +274,15 @@ public final class Engine implements SubsystemMainClass {
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else
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logger.crash("Failed to initialize subsystem " + clazz.getName() + ": Does not implement " + SubsystemMainClass.class.getName());
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subsystemsMap.put(Objects.requireNonNull(initializedClass), initializedClass.getDependencyVector());
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//noinspection DataFlowIssue // the crash call will prevent a NullPointerException
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subsystemsMutable.add(new DependencySubsystemVector(initializedClass.getDependencyVector(), initializedClass));
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} catch (Exception exception) {
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logger.crash("Failed to initialize subsystem " + clazz.getName() + ": Method invocation error", exception);
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}
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}
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// Remove entries with null values
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for (SubsystemMainClass subsystem : subsystemsMap.keySet())
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if (subsystemsMap.get(subsystem) == null)
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subsystemsMap.remove(subsystem);
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subsystems = new ImmutableHashMap<>(subsystemsMap);
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// Update 'subsystems'
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subsystems = new ImmutableLinkedList<>(subsystemsMutable);
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}
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/**
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@ -292,25 +292,36 @@ public final class Engine implements SubsystemMainClass {
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* @since 1-alpha1
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*/
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private void initializeSubsystems() throws Exception {
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logger.verb("Preparing subsystem initialization");
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DependencyResolver resolver = new DependencyResolver();
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LinkedList<DependencySubsystemVector> order = new LinkedList<>();
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for (SubsystemMainClass subsystem : subsystems.keySet())
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resolver.addVector(subsystems.get(subsystem));
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// Add vectors
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resolver.addVectors(subsystems);
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logger.diag("Resolving dependencies");
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// Resolve dependencies and get order
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logger.verb("Resolving subsystem dependencies");
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try {
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resolver.resolve();
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} catch (Exception exception) {
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logger.crash("An error occurred trying to initialize engine subsystems: " + exception.getClass().getName() + (exception.getMessage() == null ? "" : ": " + exception.getMessage()));
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throw exception;
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for (DependencyVector vector : resolver.resolve().getOrder()) // smol workaround
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order.add((DependencySubsystemVector) vector);
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} catch (Throwable throwable) {
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logger.crash("An error occurred trying to resolve subsystem dependencies: " + throwable.getClass().getName() + (throwable.getMessage() == null ? "" : ": " + throwable.getMessage()));
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throw throwable;
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}
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// Initialize subsystems
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logger.info("Initializing engine subsystems");
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for (SubsystemMainClass subsystem : subsystems.keySet()) {
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logger.verb("Initializing subsystem " + subsystem.getClass().getName());
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subsystem.initializeSubsystem();
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for (DependencySubsystemVector vector : subsystems) {
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logger.verb("Initializing subsystem " + vector.getMainClass().getClass().getName());
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try {
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vector.getMainClass().initializeSubsystem();
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} catch (Throwable throwable) {
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logger.crash("An error occurred trying to initialize subsystem " + vector.getMainClass().getClass().getName() + ": " + throwable.getClass().getName() + (throwable.getMessage() == null ? "" : ": " + throwable.getMessage()));
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throw throwable;
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}
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}
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// Update 'subsystems'
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subsystems = new ImmutableLinkedList<>(order);
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}
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/**
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