From 481a902538b951a420d00c32063e0984e4e922d6 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton@traccar.org>
Date: Thu, 16 Jun 2022 06:48:48 -0700
Subject: Inject data source

---
 .../java/org/traccar/storage/DatabaseModule.java   | 103 +++++++++++++++++++++
 1 file changed, 103 insertions(+)
 create mode 100644 src/main/java/org/traccar/storage/DatabaseModule.java

(limited to 'src/main/java/org/traccar/storage')

diff --git a/src/main/java/org/traccar/storage/DatabaseModule.java b/src/main/java/org/traccar/storage/DatabaseModule.java
new file mode 100644
index 000000000..71bf84b34
--- /dev/null
+++ b/src/main/java/org/traccar/storage/DatabaseModule.java
@@ -0,0 +1,103 @@
+/*
+ * 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.storage;
+
+import com.google.inject.AbstractModule;
+import com.google.inject.Provides;
+import com.zaxxer.hikari.HikariConfig;
+import com.zaxxer.hikari.HikariDataSource;
+import liquibase.Contexts;
+import liquibase.Liquibase;
+import liquibase.database.Database;
+import liquibase.database.DatabaseFactory;
+import liquibase.exception.LiquibaseException;
+import liquibase.resource.FileSystemResourceAccessor;
+import liquibase.resource.ResourceAccessor;
+import org.traccar.config.Config;
+import org.traccar.config.Keys;
+
+import javax.inject.Singleton;
+import javax.sql.DataSource;
+import java.io.File;
+import java.io.IOException;
+import java.lang.reflect.Method;
+import java.net.URL;
+
+public class DatabaseModule extends AbstractModule {
+
+    @Singleton
+    @Provides
+    public static DataSource provideDataSource(
+            Config config) throws ReflectiveOperationException, IOException, LiquibaseException {
+
+        String driverFile = config.getString(Keys.DATABASE_DRIVER_FILE);
+        if (driverFile != null) {
+            ClassLoader classLoader = ClassLoader.getSystemClassLoader();
+            try {
+                Method method = classLoader.getClass().getDeclaredMethod("addURL", URL.class);
+                method.setAccessible(true);
+                method.invoke(classLoader, new File(driverFile).toURI().toURL());
+            } catch (NoSuchMethodException e) {
+                Method method = classLoader.getClass()
+                        .getDeclaredMethod("appendToClassPathForInstrumentation", String.class);
+                method.setAccessible(true);
+                method.invoke(classLoader, driverFile);
+            }
+        }
+
+        String driver = config.getString(Keys.DATABASE_DRIVER);
+        if (driver != null) {
+            Class.forName(driver);
+        }
+
+        HikariConfig hikariConfig = new HikariConfig();
+        hikariConfig.setDriverClassName(driver);
+        hikariConfig.setJdbcUrl(config.getString(Keys.DATABASE_URL));
+        hikariConfig.setUsername(config.getString(Keys.DATABASE_USER));
+        hikariConfig.setPassword(config.getString(Keys.DATABASE_PASSWORD));
+        hikariConfig.setConnectionInitSql(config.getString(Keys.DATABASE_CHECK_CONNECTION));
+        hikariConfig.setIdleTimeout(600000);
+
+        int maxPoolSize = config.getInteger(Keys.DATABASE_MAX_POOL_SIZE);
+        if (maxPoolSize != 0) {
+            hikariConfig.setMaximumPoolSize(maxPoolSize);
+        }
+
+        DataSource dataSource = new HikariDataSource(hikariConfig);
+
+        if (config.hasKey(Keys.DATABASE_CHANGELOG)) {
+
+            ResourceAccessor resourceAccessor = new FileSystemResourceAccessor(new File("."));
+
+            Database database = DatabaseFactory.getInstance().openDatabase(
+                    config.getString(Keys.DATABASE_URL),
+                    config.getString(Keys.DATABASE_USER),
+                    config.getString(Keys.DATABASE_PASSWORD),
+                    config.getString(Keys.DATABASE_DRIVER),
+                    null, null, null, resourceAccessor);
+
+            String changelog = config.getString(Keys.DATABASE_CHANGELOG);
+
+            try (Liquibase liquibase = new Liquibase(changelog, resourceAccessor, database)) {
+                liquibase.clearCheckSums();
+                liquibase.update(new Contexts());
+            }
+        }
+
+        return dataSource;
+    }
+
+}
-- 
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