Added application.properties support.

pom.xml

@@ -38,4 +38,33 @@
 
     </dependencies>
 
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-assembly-plugin</artifactId>
+                <version>3.6.0</version>
+                <configuration>
+                    <archive>
+                        <manifest>
+                            <mainClass>com.andrewlalis.d_package_search.DPackageSearch</mainClass>
+                        </manifest>
+                    </archive>
+                    <descriptorRefs>
+                        <descriptorRef>jar-with-dependencies</descriptorRef>
+                    </descriptorRefs>
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>make-assembly</id>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>single</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
 </project>

src/main/java/com/andrewlalis/d_package_search/DPackageSearch.java

@@ -4,19 +4,29 @@ import com.andrewlalis.d_package_search.impl.DubRegistryPackageFetcher;
 import com.andrewlalis.d_package_search.impl.LucenePackageIndexer;
 import com.andrewlalis.d_package_search.impl.LucenePackageSearcher;
 
+import java.io.IOException;
+import java.nio.file.Files;
 import java.nio.file.Path;
 import java.time.Duration;
 import java.util.ArrayList;
+import java.util.Properties;
 
 public class DPackageSearch {
+	public static Properties APPLICATION_PROPERTIES;
+
 	public static void main(String[] args) {
+		APPLICATION_PROPERTIES = loadApplicationProperties();
 		Path indexPath = Path.of("package-index");
+		if (isPropTrue("indexer.enabled")) {
 			startIndexerThread(new IndexGenerator(
 					new DubRegistryPackageFetcher(),
 					() -> new LucenePackageIndexer(indexPath)
 			));
+		}
+		if (isPropTrue("server.enabled")) {
 			new WebApiRunner(new LucenePackageSearcher(indexPath)).run();
 		}
+	}
 
 	/**
 	 * Starts a new (virtual) thread that periodically re-generates the package
@@ -36,7 +46,7 @@ public class DPackageSearch {
 				System.out.println("Re-indexing packages now.");
 				indexGenerator.run();
 				try {
-					Thread.sleep(Duration.ofMinutes(60));
+					Thread.sleep(Duration.ofMinutes(getIntProp("indexer.delay-minutes", 60)));
 				} catch (InterruptedException e) {
 					System.err.println("Indexing thread interrupted: " + e.getMessage());
 					break;
@@ -44,4 +54,36 @@ public class DPackageSearch {
 			}
 		});
 	}
+
+	private static Properties loadApplicationProperties() {
+		Properties props = new Properties();
+		props.setProperty("server.port", "8080");
+		props.setProperty("server.host", "localhost");
+		props.setProperty("server.enabled", "true");
+		props.setProperty("indexer.enabled", "true");
+		props.setProperty("indexer.delay-minutes", "60");
+		Path propsFilePath = Path.of("application.properties");
+		if (Files.exists(propsFilePath)) {
+			try (var in = Files.newInputStream(propsFilePath)) {
+				props.load(in);
+				System.out.println("Loaded application properties from " + propsFilePath);
+			} catch (IOException e) {
+				System.err.println("Failed to load application properties from " + propsFilePath + ": " + e.getMessage());
+			}
+		}
+		return props;
+	}
+
+	public static boolean isPropTrue(String name) {
+		return APPLICATION_PROPERTIES.getProperty(name, "false").equalsIgnoreCase("true");
+	}
+
+	public static int getIntProp(String name, int defaultValue) {
+		String s = APPLICATION_PROPERTIES.getProperty(name, Integer.toString(defaultValue));
+		return Integer.parseInt(s);
+	}
+
+	public static String getStringProp(String name) {
+		return APPLICATION_PROPERTIES.getProperty(name);
+	}
 }

src/main/java/com/andrewlalis/d_package_search/WebApiRunner.java

@@ -37,7 +37,8 @@ public final class WebApiRunner extends Handler.Abstract implements Runnable {
         threadPool.setName("http-server");
         Server server = new Server(threadPool);
         ServerConnector connector = new ServerConnector(server);
-        connector.setPort(8080);
+        connector.setPort(DPackageSearch.getIntProp("server.port", 8080));
+        connector.setHost(DPackageSearch.getStringProp("server.host"));
         server.addConnector(connector);
         server.setHandler(this);
         try {