From: David ‘Bombe’ Roden Date: Sat, 9 May 2015 14:50:11 +0000 (+0200) Subject: Use Guice to create core classes X-Git-Tag: v2~177 X-Git-Url: https://git.pterodactylus.net/?a=commitdiff_plain;h=f78a78032ee008d2e8c3a669ead89485ea60c0f3;p=rhynodge.git Use Guice to create core classes --- diff --git a/src/main/java/net/pterodactylus/rhynodge/engine/Starter.java b/src/main/java/net/pterodactylus/rhynodge/engine/Starter.java index d824eb8..bed4935 100644 --- a/src/main/java/net/pterodactylus/rhynodge/engine/Starter.java +++ b/src/main/java/net/pterodactylus/rhynodge/engine/Starter.java @@ -18,12 +18,17 @@ package net.pterodactylus.rhynodge.engine; import java.io.IOException; +import java.util.Arrays; import net.pterodactylus.rhynodge.actions.EmailAction; import net.pterodactylus.rhynodge.loader.ChainWatcher; -import net.pterodactylus.rhynodge.states.StateManager; -import net.pterodactylus.rhynodge.states.StateManager.Directory; +import net.pterodactylus.rhynodge.loader.ChainWatcher.ChainDirectory; +import net.pterodactylus.rhynodge.states.StateManager.StateDirectory; import net.pterodactylus.util.envopt.Parser; +import net.pterodactylus.util.inject.ObjectBinding; + +import com.google.inject.Guice; +import com.google.inject.Injector; /** * Rhynodge main starter class. @@ -39,17 +44,18 @@ public class Starter { * Command-line arguments */ public static void main(String... arguments) throws IOException { - Options options = Parser.fromSystemEnvironment().parseEnvironment(Options::new); + EmailAction errorEmailAction = + createErrorEmailAction(options.smtpHostname, options.errorEmailSender, options.errorEmailRecipient); - /* create the state manager. */ - StateManager stateManager = new StateManager(Directory.of(options.stateDirectory)); - - /* create the engine. */ - Engine engine = new Engine(stateManager, createErrorEmailAction(options.smtpHostname, options.errorEmailSender, options.errorEmailRecipient)); + Injector injector = Guice.createInjector(Arrays.asList( + ObjectBinding.forClass(StateDirectory.class).is(StateDirectory.of(options.stateDirectory)), + ObjectBinding.forClass(ChainDirectory.class).is(ChainDirectory.of(options.chainDirectory)), + ObjectBinding.forClass(EmailAction.class).is(errorEmailAction) + )); /* start a watcher. */ - ChainWatcher chainWatcher = new ChainWatcher(engine, options.chainDirectory); + ChainWatcher chainWatcher = injector.getInstance(ChainWatcher.class); chainWatcher.start(); } diff --git a/src/main/java/net/pterodactylus/rhynodge/loader/ChainWatcher.java b/src/main/java/net/pterodactylus/rhynodge/loader/ChainWatcher.java index 71320ff..69faf8b 100644 --- a/src/main/java/net/pterodactylus/rhynodge/loader/ChainWatcher.java +++ b/src/main/java/net/pterodactylus/rhynodge/loader/ChainWatcher.java @@ -27,6 +27,9 @@ import java.util.Map.Entry; import java.util.Set; import java.util.concurrent.TimeUnit; +import javax.inject.Inject; +import javax.inject.Singleton; + import net.pterodactylus.rhynodge.Reaction; import net.pterodactylus.rhynodge.engine.Engine; import net.pterodactylus.rhynodge.loader.Chain.Parameter; @@ -48,6 +51,7 @@ import com.google.common.util.concurrent.Uninterruptibles; * * @author David ‘Bombe’ Roden */ +@Singleton public class ChainWatcher extends AbstractExecutionThreadService { /** The logger. */ @@ -73,9 +77,10 @@ public class ChainWatcher extends AbstractExecutionThreadService { * @param directory * The directory to watch */ - public ChainWatcher(Engine engine, String directory) { + @Inject + public ChainWatcher(Engine engine, ChainDirectory directory) { this.engine = engine; - this.directory = directory; + this.directory = directory.getDirectory(); } // @@ -235,4 +240,22 @@ public class ChainWatcher extends AbstractExecutionThreadService { return (filename.lastIndexOf(".") > -1) ? filename.substring(0, filename.lastIndexOf(".")) : filename; } + public static class ChainDirectory { + + private final String directory; + + private ChainDirectory(String directory) { + this.directory = directory; + } + + public String getDirectory() { + return directory; + } + + public static ChainDirectory of(String directory) { + return new ChainDirectory(directory); + } + + } + } diff --git a/src/main/java/net/pterodactylus/rhynodge/states/StateManager.java b/src/main/java/net/pterodactylus/rhynodge/states/StateManager.java index bb8aff5..8e0c72e 100644 --- a/src/main/java/net/pterodactylus/rhynodge/states/StateManager.java +++ b/src/main/java/net/pterodactylus/rhynodge/states/StateManager.java @@ -56,12 +56,12 @@ public class StateManager { /** * Creates a new state manager. The given directory is assumed to exist. * - * @param directory + * @param stateDirectory * The directory to store states in */ @Inject - public StateManager(Directory directory) { - this.directory = directory.getDirectory(); + public StateManager(StateDirectory stateDirectory) { + this.directory = stateDirectory.getDirectory(); } // @@ -164,11 +164,11 @@ public class StateManager { return empty(); } - public static class Directory { + public static class StateDirectory { private final String directory; - private Directory(String directory) { + private StateDirectory(String directory) { this.directory = directory; } @@ -176,8 +176,8 @@ public class StateManager { return directory; } - public static Directory of(String directory) { - return new Directory(directory); + public static StateDirectory of(String directory) { + return new StateDirectory(directory); } } diff --git a/src/main/java/net/pterodactylus/util/inject/ObjectBinding.java b/src/main/java/net/pterodactylus/util/inject/ObjectBinding.java new file mode 100644 index 0000000..5bf2864 --- /dev/null +++ b/src/main/java/net/pterodactylus/util/inject/ObjectBinding.java @@ -0,0 +1,30 @@ +package net.pterodactylus.util.inject; + +import com.google.inject.Module; + +/** + * Helper class for Guice configuration. + * + * @author David ‘Bombe’ Roden + */ +public class ObjectBinding { + + public static $1 forClass(Class requestedClass) { + return new $1<>(requestedClass); + } + + public static class $1 { + + private final Class requestedClass; + + private $1(Class requestedClass) { + this.requestedClass = requestedClass; + } + + public Module is(T instance) { + return (binder) -> binder.bind(requestedClass).toInstance(instance); + } + + } + +} diff --git a/src/test/java/net/pterodactylus/rhynodge/states/StateManagerTest.java b/src/test/java/net/pterodactylus/rhynodge/states/StateManagerTest.java index 0821b68..839b389 100644 --- a/src/test/java/net/pterodactylus/rhynodge/states/StateManagerTest.java +++ b/src/test/java/net/pterodactylus/rhynodge/states/StateManagerTest.java @@ -12,7 +12,7 @@ import java.io.IOException; import java.util.Optional; import net.pterodactylus.rhynodge.State; -import net.pterodactylus.rhynodge.states.StateManager.Directory; +import net.pterodactylus.rhynodge.states.StateManager.StateDirectory; import com.fasterxml.jackson.annotation.JsonProperty; import com.google.common.io.Files; @@ -42,7 +42,7 @@ public class StateManagerTest { public StateManagerTest() throws IOException { tempFolder.create(); statePath = tempFolder.newFolder(); - stateManager = new StateManager(Directory.of(statePath.getPath())); + stateManager = new StateManager(StateDirectory.of(statePath.getPath())); } @Test diff --git a/src/test/java/net/pterodactylus/util/inject/ObjectBindingTest.java b/src/test/java/net/pterodactylus/util/inject/ObjectBindingTest.java new file mode 100644 index 0000000..df32585 --- /dev/null +++ b/src/test/java/net/pterodactylus/util/inject/ObjectBindingTest.java @@ -0,0 +1,32 @@ +package net.pterodactylus.util.inject; + +import com.google.inject.Guice; +import com.google.inject.Injector; +import org.hamcrest.MatcherAssert; +import org.hamcrest.Matchers; +import org.junit.Test; + +/** + * Unit test for {@link ObjectBinding}. + * + * @author David ‘Bombe’ Roden + */ +public class ObjectBindingTest { + + @Test + public void constructorCanBeCalled() { + new ObjectBinding(); + } + + @Test + public void objectIsBound() { + TestClass testObject = new TestClass(); + Injector injector = Guice.createInjector(ObjectBinding.forClass(TestInterface.class).is(testObject)); + MatcherAssert.assertThat(injector.getInstance(TestInterface.class), Matchers.sameInstance(testObject)); + } + + public interface TestInterface { } + + public static class TestClass implements TestInterface { } + +}