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authorAnton Tananaev <anton.tananaev@gmail.com>2022-02-14 21:30:25 -0800
committerAnton Tananaev <anton.tananaev@gmail.com>2022-02-14 21:30:25 -0800
commit17d8ffe18170c422ac2c6dccef8361e1ca684548 (patch)
tree63ee9023d6c19fd7d849cd8da759ac174ca4cec9 /src/main/java/org/traccar
parent85b3d963d7fcb0f13491baafd9b0159280e1af51 (diff)
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Extract package scanning
Diffstat (limited to 'src/main/java/org/traccar')
-rw-r--r--src/main/java/org/traccar/ServerManager.java48
-rw-r--r--src/main/java/org/traccar/helper/ClassScanner.java80
2 files changed, 84 insertions, 44 deletions
diff --git a/src/main/java/org/traccar/ServerManager.java b/src/main/java/org/traccar/ServerManager.java
index 0db786bdb..2e2cf7cff 100644
--- a/src/main/java/org/traccar/ServerManager.java
+++ b/src/main/java/org/traccar/ServerManager.java
@@ -18,23 +18,16 @@ package org.traccar;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.traccar.config.Keys;
+import org.traccar.helper.ClassScanner;
-import java.io.File;
import java.io.IOException;
import java.net.BindException;
import java.net.ConnectException;
-import java.net.URI;
import java.net.URISyntaxException;
-import java.net.URL;
-import java.net.URLDecoder;
-import java.nio.charset.StandardCharsets;
-import java.util.Enumeration;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
-import java.util.jar.JarEntry;
-import java.util.jar.JarFile;
public class ServerManager {
@@ -43,38 +36,9 @@ public class ServerManager {
private final List<TrackerConnector> connectorList = new LinkedList<>();
private final Map<String, BaseProtocol> protocolList = new ConcurrentHashMap<>();
- private void loadPackage(String packageName) throws IOException, URISyntaxException, ReflectiveOperationException {
-
- List<String> names = new LinkedList<>();
- String packagePath = packageName.replace('.', '/');
- URL packageUrl = getClass().getClassLoader().getResource(packagePath);
-
- if (packageUrl.getProtocol().equals("jar")) {
- String jarFileName = URLDecoder.decode(packageUrl.getFile(), StandardCharsets.UTF_8.name());
- try (JarFile jf = new JarFile(jarFileName.substring(5, jarFileName.indexOf("!")))) {
- Enumeration<JarEntry> jarEntries = jf.entries();
- while (jarEntries.hasMoreElements()) {
- String entryName = jarEntries.nextElement().getName();
- if (entryName.startsWith(packagePath) && entryName.length() > packagePath.length() + 5) {
- names.add(entryName.substring(packagePath.length() + 1, entryName.lastIndexOf('.')));
- }
- }
- }
- } else {
- File folder = new File(new URI(packageUrl.toString()));
- File[] files = folder.listFiles();
- if (files != null) {
- for (File actual: files) {
- String entryName = actual.getName();
- names.add(entryName.substring(0, entryName.lastIndexOf('.')));
- }
- }
- }
-
- for (String name : names) {
- Class<?> protocolClass = Class.forName(packageName + '.' + name);
- if (BaseProtocol.class.isAssignableFrom(protocolClass) && Context.getConfig().hasKey(
- Keys.PROTOCOL_PORT.withPrefix(BaseProtocol.nameFromClass(protocolClass)))) {
+ public ServerManager() throws IOException, URISyntaxException, ReflectiveOperationException {
+ for (Class<?> protocolClass : ClassScanner.findSubclasses(BaseProtocol.class, "org.traccar.protocol")) {
+ if (Context.getConfig().hasKey(Keys.PROTOCOL_PORT.withPrefix(BaseProtocol.nameFromClass(protocolClass)))) {
BaseProtocol protocol = (BaseProtocol) protocolClass.getDeclaredConstructor().newInstance();
connectorList.addAll(protocol.getConnectorList());
protocolList.put(protocol.getName(), protocol);
@@ -82,10 +46,6 @@ public class ServerManager {
}
}
- public ServerManager() throws IOException, URISyntaxException, ReflectiveOperationException {
- loadPackage("org.traccar.protocol");
- }
-
public BaseProtocol getProtocol(String name) {
return protocolList.get(name);
}
diff --git a/src/main/java/org/traccar/helper/ClassScanner.java b/src/main/java/org/traccar/helper/ClassScanner.java
new file mode 100644
index 000000000..c928f6a12
--- /dev/null
+++ b/src/main/java/org/traccar/helper/ClassScanner.java
@@ -0,0 +1,80 @@
+/*
+ * Copyright 2022 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.helper;
+
+import java.io.File;
+import java.io.IOException;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.net.URL;
+import java.net.URLDecoder;
+import java.nio.charset.StandardCharsets;
+import java.util.Enumeration;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.jar.JarEntry;
+import java.util.jar.JarFile;
+
+public final class ClassScanner {
+
+ private ClassScanner() {
+ }
+
+ public static List<Class<?>> findSubclasses(
+ Class<?> baseClass) throws IOException, URISyntaxException, ReflectiveOperationException {
+ return findSubclasses(baseClass, baseClass.getPackageName());
+ }
+
+ public static List<Class<?>> findSubclasses(Class<?> baseClass, String packageName)
+ throws IOException, URISyntaxException, ReflectiveOperationException {
+
+ List<String> names = new LinkedList<>();
+ String packagePath = packageName.replace('.', '/');
+ URL packageUrl = baseClass.getClassLoader().getResource(packagePath);
+
+ if (packageUrl.getProtocol().equals("jar")) {
+ String jarFileName = URLDecoder.decode(packageUrl.getFile(), StandardCharsets.UTF_8.name());
+ try (JarFile jf = new JarFile(jarFileName.substring(5, jarFileName.indexOf("!")))) {
+ Enumeration<JarEntry> jarEntries = jf.entries();
+ while (jarEntries.hasMoreElements()) {
+ String entryName = jarEntries.nextElement().getName();
+ if (entryName.startsWith(packagePath) && entryName.length() > packagePath.length() + 5) {
+ names.add(entryName.substring(packagePath.length() + 1, entryName.lastIndexOf('.')));
+ }
+ }
+ }
+ } else {
+ File folder = new File(new URI(packageUrl.toString()));
+ File[] files = folder.listFiles();
+ if (files != null) {
+ for (File actual: files) {
+ String entryName = actual.getName();
+ names.add(entryName.substring(0, entryName.lastIndexOf('.')));
+ }
+ }
+ }
+
+ var classes = new LinkedList<Class<?>>();
+ for (String name : names) {
+ var clazz = Class.forName(packageName + '.' + name);
+ if (baseClass.isAssignableFrom(clazz)) {
+ classes.add(clazz);
+ }
+ }
+ return classes;
+ }
+
+}