версия БД

credit-tracker.properties

@@ -69,6 +69,8 @@ ct.monitoring-interval=${MONITORING_INTERVAL:15}
 ct.update-flags-interval=${UPDATE_FLAGS_INTERVAL:1}
 ct.days-to-update-flags=${DAYS_TO_UPDATE_FLAGS:30}
 
+ct.db-version=${DB_VERSION:1234}
+
 ct.encoding=windows-1251
 
 #Batch size and global pipeline timeout

src/main/java/ru/nbch/credit_tracker/config/settings/CreditTrackerSettings.java

@@ -36,4 +36,6 @@ public class CreditTrackerSettings {
 
     private Integer batchSize;
     private Integer timeout;
+
+    private String dbVersion;
 }

src/main/java/ru/nbch/credit_tracker/entities/app/AppVersion.java

@@ -0,0 +1,10 @@
+package ru.nbch.credit_tracker.entities.app;
+
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+public class AppVersion {
+    private String dbVersion;
+}

src/main/java/ru/nbch/credit_tracker/mapper/signal/AppVersionMapper.java

@@ -0,0 +1,9 @@
+package ru.nbch.credit_tracker.mapper.signal;
+
+import org.apache.ibatis.annotations.Mapper;
+import ru.nbch.credit_tracker.entities.app.AppVersion;
+
+@Mapper
+public interface AppVersionMapper {
+    AppVersion getAppVersion();
+}

src/main/java/ru/nbch/credit_tracker/service/DbVersionValidationService.java

@@ -0,0 +1,54 @@
+package ru.nbch.credit_tracker.service;
+
+import org.apache.commons.lang3.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.InitializingBean;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import ru.nbch.credit_tracker.config.settings.CreditTrackerSettings;
+import ru.nbch.credit_tracker.entities.app.AppVersion;
+import ru.nbch.credit_tracker.mapper.signal.AppVersionMapper;
+
+@Service
+public class DbVersionValidationService implements InitializingBean {
+
+    private final Logger log = LoggerFactory.getLogger(getClass());
+    private final AppVersionMapper appVersionMapper;
+    private final CreditTrackerSettings settings;
+
+    @Autowired
+    public DbVersionValidationService(AppVersionMapper appVersionMapper, CreditTrackerSettings settings) {
+        this.appVersionMapper = appVersionMapper;
+        this.settings = settings;
+    }
+
+    @Override
+    public void afterPropertiesSet() throws Exception {
+        String expectedDbVersion = settings.getDbVersion();
+
+        if (StringUtils.isEmpty(expectedDbVersion)) {
+            log.error("expected database version is not specified in the settings.");
+            System.exit(1);
+        }
+
+        log.info("expected DB version: {}", expectedDbVersion);
+
+        AppVersion appVersion = appVersionMapper.getAppVersion();
+        if (appVersion == null || StringUtils.isEmpty(appVersion.getDbVersion())) {
+            log.error("couldn't load version from APP_VERSION database table.");
+            System.exit(1);
+        }
+
+        String actualVersion = appVersion.getDbVersion();
+
+        log.info("actual DB version: {}", actualVersion);
+
+        if (!expectedDbVersion.equals(actualVersion)) {
+            log.error("expected database version does not match actual database version");
+            System.exit(1);
+        }
+
+        log.info("Database version validation complete: {}", actualVersion);
+    }
+}

src/main/resources/mybatis/mapper/signal/AppVersionMapper.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE mapper
+        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+
+<mapper namespace="ru.nbch.credit_tracker.mapper.signal.AppVersionMapper">
+
+    <resultMap id="appVersionResultMap" type="ru.nbch.credit_tracker.entities.app.AppVersion">
+        <result property="dbVersion" column="db_version"/>
+    </resultMap>
+
+    <select id="getAppVersion" resultMap="appVersionResultMap">
+        SELECT db_version FROM app_version
+    </select>
+</mapper>

src/main/resources/sql/v2.21.ddl

@@ -1,5 +1,5 @@
 
-CREATE TABLE signals_user_packages (
+CREATE TABLE app_version (
     DB_VERSION varchar(12)
 );