new feature: 新增 auto_start 参数用于自动启动插件 #228 #227

lealone-db/src/main/java/com/lealone/db/PluginObject.java

@@ -9,6 +9,7 @@
 import java.net.URLClassLoader;
 
 import com.lealone.common.util.CaseInsensitiveMap;
+import com.lealone.common.util.MapUtils;
 import com.lealone.common.util.StatementBuilder;
 
 /**
@@ -91,4 +92,8 @@ public void stop() {
     public String getState() {
         return state;
     }
+
+    public boolean isAutoStart() {
+        return MapUtils.getBoolean(parameters, "auto_start", false);
+    }
 }

lealone-main/src/main/java/com/lealone/main/Lealone.java

@@ -24,6 +24,7 @@
 import com.lealone.db.LealoneDatabase;
 import com.lealone.db.PluggableEngine;
 import com.lealone.db.PluginManager;
+import com.lealone.db.PluginObject;
 import com.lealone.db.SysProperties;
 import com.lealone.db.scheduler.Scheduler;
 import com.lealone.db.scheduler.SchedulerFactory;
@@ -299,5 +300,14 @@ private void startProtocolServers() {
                 logger.info(name + " started, host: {}, port: {}", server.getHost(), server.getPort());
             }
         }
+        startPlugins();
+    }
+
+    private void startPlugins() {
+        List<PluginObject> pluginObjects = LealoneDatabase.getInstance().getAllPluginObjects();
+        for (PluginObject pluginObject : pluginObjects) {
+            if (pluginObject.isAutoStart())
+                pluginObject.start();
+        }
     }
 }

lealone-sql/src/main/java/com/lealone/sql/admin/CreatePlugin.java

@@ -103,6 +103,9 @@ public int update() {
         lealoneDB.addDatabaseObject(session, pluginObject, lock);
         // 将缓存过期掉
         lealoneDB.getNextModificationMetaId();
+
+        if (!lealoneDB.isStarting() && pluginObject.isAutoStart())
+            pluginObject.start();
         return 0;
     }
 }