【Java】初学Vert.x(4)

6. Redis操作+JOOQ 存储

紧接上一章节,本章节将来谈谈这个项目里面是如何使用 Redis 进行读取和写入操作的并且最终通过 JOOQ 将数据转存到 Mysql 中。
在 Vert.x 项目中 Redis 的使用相对比较简单,仅需一个 RedisUtil 类即可完成客户端配置,如下图:

public class RedisUtil {

    // 连接池最大大小
    private static final int MAX_POOL_SIZE = YamlUtil.getIntegerValue("redis.max-pool-size");
    // 连接池最大等待
    private static final int MAX_POOL_WAITING = YamlUtil.getIntegerValue("redis.max-pool-waiting");
    // 连接池超时
    private static final int POOL_RECYCLE_TIMEOUT = YamlUtil.getIntegerValue("redis.pool-recycle-timeout");
    // 最大等待用户
    private static final int MAX_WAITING_HANDLERS = YamlUtil.getIntegerValue("redis.max-waiting-handlers");
    // 连接字符串
    private static final String CONNECTION_STRING = YamlUtil.getStringValue("redis.connection-string");

    private RedisUtil() {}

    private static class SingletonInstance {
        private static final RedisUtil INSTANCE = new RedisUtil();
    }

    public static RedisUtil getInstance() {
        return SingletonInstance.INSTANCE;
    }

    /**
     * 
     * @MethodName: getConfiguration
     * @Description: redis配置
     * @author yuanzhenhui
     * @return RedisOptions
     * @date 2023-04-13 04:32:48
     */
    public RedisOptions getConfiguration() {
        RedisOptions options = new RedisOptions();
        options.setMaxPoolSize(MAX_POOL_SIZE);
        options.setMaxPoolWaiting(MAX_POOL_WAITING);
        options.setConnectionString(CONNECTION_STRING);
        options.setPoolRecycleTimeout(POOL_RECYCLE_TIMEOUT);
        options.setMaxWaitingHandlers(MAX_WAITING_HANDLERS);
        return options;
    }
}

RedisUtil 类只做配置信息整理,具体使用如下图所示:

public class SysUserBuriedRouter extends AbstractVerticle implements RouterSet {

    private static final Logger LOGGER = LogManager.getLogger(SysUserBuriedRouter.class);
    private static final SimpleDateFormat SIMPLE_DATE_FORMAT = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");

    @PropLoader(key = "server.context")
    private static String context;
    private static RedisAPI redis;

    @Override
    public void start() {
        YamlUtil.propLoadSetter(this);

        // -----------------
        // 创建redis客户端连接
        // -----------------
        Redis.createClient(vertx, RedisUtil.getInstance().getConfiguration()).connect(onConnect -> {
            if (onConnect.succeeded()) {
                redis = RedisAPI.api(onConnect.result());
            }
        });
    }

    /**
     * 
     * @MethodName: sendBuriedPointInfo
     * @Description: restful处理类
     * @author yuanzhenhui
     * @param ctx
     *            void
     * @date 2023-04-13 05:02:52
     */
    public void sendBuriedPointInfo(RoutingContext ctx) {
        String jsonStr = ctx.getBodyAsString();
        if (!StringUtil.isNullOrEmpty(jsonStr)) {
            SysUserBuried puav = ReflectUtil.convertJson2Pojo(jsonStr, SysUserBuried.class);

            String uuid = UUID.randomUUID().toString();
            puav.setId(uuid);
            puav.setIp(IPUtil.getIpAddr(ctx));
            puav.setAccessDate(SIMPLE_DATE_FORMAT.format(new Date()));

            redis.setnx(uuid, puav.toJson().encode(), setnxResp -> {
                if (setnxResp.failed()) {
                    LOGGER.error("func[SysUserBuriedRouter.sendBuriedPointInfo] Exception [{} - {}]",
                        new Object[] {setnxResp.cause(), setnxResp.result()});
                }
            });
        }
        HttpServerResponse hsr =
            ctx.response().putHeader(CommonConstants.HTTP_CONTENT_TYPE, CommonConstants.HTTP_APPLICATION_JSON);
        hsr.end(Json.encode(new RespMsg(1, "Message received")));
    }

    /**
     * 
     * @MethodName: router4Restful
     * @Description: 实现路由转发
     * @author yuanzhenhui
     * @param router
     * @see io.kida.components.routers.RouterSet#router4Restful(io.vertx.ext.web.Router)
     * @date 2023-04-13 05:03:12
     */
    @Override
    public void router4Restful(Router router) {
        router.post(CommonConstants.HTTP_SLASH + context + CommonConstants.HTTP_SLASH + "sendBuriedPointInfo")
            .handler(this::sendBuriedPointInfo);
    }
}

还是以 SysUserBuriedRouter 为例,由于 Vert.x 有 Redis API 组件,因此这里可以在 start 方法中先初始化 Redis 客户端,如下图:

 @Override
public void start() {
    YamlUtil.propLoadSetter(this);

    // -----------------
    // 创建redis客户端连接
    // -----------------
    Redis.createClient(vertx, RedisUtil.getInstance().getConfiguration()).connect(onConnect -> {
        if (onConnect.succeeded()) {
            redis = RedisAPI.api(onConnect.result());
        }
    });
}

调用 Redis.createClient 方法,第一个参数传入 vertx 实例,第二个参数通过单例获取 redis 配置信息,之后调用 connect 并获取其 onConnect 回调。当 onConnect 为 succeeded 的时候,将 onConnect 的结果传入到 RedisAPI.api 方法中以完成 redis 客户端的创建。
由于 Vert.x 提供的 Redis 客户端都是异步处理的,因此所有 redis 方法都涉及到回调,如下图:

public void sendBuriedPointInfo(RoutingContext ctx) {
	String jsonStr = ctx.getBodyAsString();
    if (!StringUtil.isNullOrEmpty(jsonStr)) {
        SysUserBuried puav = ReflectUtil.convertJson2Pojo(jsonStr, SysUserBuried.class);

        String uuid = UUID.randomUUID().toString();
        puav.setId(uuid);
        puav.setIp(IPUtil.getIpAddr(ctx));
        puav.setAccessDate(SIMPLE_DATE_FORMAT.format(new Date()));

        redis.setnx(uuid, puav.toJson().encode(), setnxResp -> {
            if (setnxResp.failed()) {
                LOGGER.error("func[SysUserBuriedRouter.sendBuriedPointInfo] Exception [{} - {}]",
                    new Object[] {setnxResp.cause(), setnxResp.result()});
            }
        });
    }
    HttpServerResponse hsr =
        ctx.response().putHeader(CommonConstants.HTTP_CONTENT_TYPE, CommonConstants.HTTP_APPLICATION_JSON);
    hsr.end(Json.encode(new RespMsg(1, "Message received")));
}

不难看出,其实 Redis 客户端的调用方式跟我们使用 CLI 调用几乎如出一辙,这里就不再细说了。
因为这里只是一个 demo,所以处理的方式也是非常的简单。在sendBuriedPointInfo 方法中先对传入的 Json 字符串进行对象的转换,这里使用自己封装的方法 ReflectUtil.convertJson2Pojo 来完成,当然了你可以用 fastjson 等其他方式来完成。对象转换出来后再进行一次信息整理之后重新转换为 json 存放在 redis 里面。

以上就是将数据存放在 redis 的操作,那么如何将 redis 中的数据提取出来后通过 JOOQ 转存到 Mysql 了?在说业务代码之前,我们先看看 JOOQ 的配置。

<project xmlns="http://maven.apache.org/POM/4.0.0"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0modelVersion>
  <groupId>io.kidagroupId>
  <artifactId>buried-vtx-demoartifactId>
  <version>1.0.0version>
  <name>buried-vtx-demoname>
  <description>数据埋点vtx演示description>

  <properties>
   	...
    <jooq.version>3.13.2jooq.version>
    <jooq.rx.version>4.2.0jooq.rx.version>
    <yaml.version>1.1.3yaml.version>
    <hikari.version>3.4.5hikari.version>
		...
  properties>

  <dependencies>
    ...
    
    
    <dependency>
      <groupId>com.zaxxergroupId>
      <artifactId>HikariCPartifactId>
      <version>${hikari.version}version>
    dependency>

    
    <dependency>
      <groupId>org.jooqgroupId>
      <artifactId>jooqartifactId>
      <version>${jooq.version}version>
    dependency>
    <dependency>
      <groupId>io.github.jklingsporngroupId>
      <artifactId>vertx-jooq-completablefuture-jdbcartifactId>
      <version>${jooq.rx.version}version>
    dependency>
 dependencies>

  <build>
		...
			
			<plugin>
				<groupId>it.ozimovgroupId>
				<artifactId>yaml-properties-maven-pluginartifactId>
				<version>${yaml.version}version>
				<executions>
					<execution>
						<phase>initializephase>
						<goals>
							<goal>read-project-propertiesgoal>
						goals>
						<configuration>
							<files>
                
                
								<file>
									src/main/resources/configs/master/application-datasource.ymlfile>
							files>
						configuration>
					execution>
				executions>
			plugin>

			
			<plugin>
				<groupId>org.jooqgroupId>
				<artifactId>jooq-codegen-mavenartifactId>
				<version>${jooq.version}version>
				<executions>
					<execution>
						<goals>
              
							<goal>generategoal>
						goals>
					execution>
				executions>

        
				<dependencies>
					<dependency>
						<groupId>io.github.jklingsporngroupId>
						<artifactId>vertx-jooq-generateartifactId>
						<version>${jooq.rx.version}version>
					dependency>
				dependencies>

        
				<configuration>
					<jdbc>
						<driver>${datasource.driver-class-name}driver>
						<url>
							${datasource.url-head}//${datasource.host}:${datasource.port}/${datasource.database-name}?useUnicode=${datasource.use-unicode}%26characterEncoding=${datasource.character-encoding}%26useSSL=${datasource.ssl-enable}%26serverTimezone=${datasource.server-timezone}url>
						<user>${datasource.username}user>
						<password>${datasource.password}password>
					jdbc>
					<generator>
						<name>
							io.github.jklingsporn.vertx.jooq.generate.completablefuture.CompletableFutureJDBCVertxGenerator
						name>
						<database>
							<name>${datasource.jooq-name}name>
							<includes>.*includes>
							<excludes>flyway_schema_historyexcludes>
							<inputSchema>${datasource.database-name}inputSchema>
						database>
						<generate>
							<pojos>truepojos>
							<javaTimeTypes>truejavaTimeTypes>
							<daos>truedaos>
							<fluentSetters>truefluentSetters>
						generate>
						<target>
							<packageName>${datasource.package-path}packageName>
							<directory>src/main/javadirectory>
						target>
						<strategy>
							<name>
								io.github.jklingsporn.vertx.jooq.generate.VertxGeneratorStrategy
							name>
						strategy>
					generator>
				configuration>
			plugin>
			...
		plugins>
	build>
project>

通过上面的 pom.xml 得知 JOOQ 是通过 HikariCP 连接池来跟 Mysql 进行交互的,同时我们也使用了 jooq-codegen-maven 对数据库进行逆向工程生成实体类代码。通过 mvn clean package 编译时会看到以下输出:

[INFO] Scanning for projects...
[INFO] 
...
[INFO] ----------------------------------------------------------
[INFO]   Thank you for using jOOQ and jOOQ's code generator
[INFO]                          
[INFO] Database parameters      
[INFO] ----------------------------------------------------------
[INFO]   dialect                : MYSQL
[INFO]   URL                    : jdbc:mysql://127.0.0.1:3506/tools?useUnicode=true%26characterEncoding=utf8%26useSSL=false%26serverTimezone=UTC
[INFO]   target dir             : /Users/yuanzhenhui/Documents/code_space/github/buried-vtx-demo/src/main/java
[INFO]   target package         : io.kida.model
[INFO]   includes               : [.*]
[INFO]   excludes               : [flyway_schema_history]
[INFO]   includeExcludeColumns  : false
[INFO] ----------------------------------------------------------
[INFO]                          
[INFO] JavaGenerator parameters 
[INFO] ----------------------------------------------------------
[INFO]   annotations (generated): false
[INFO]   annotations (JPA: any) : false
[INFO]   annotations (JPA: version): 
[INFO]   annotations (validation): false
[INFO]   comments               : true
[INFO]   comments on attributes : true
[INFO]   comments on catalogs   : true
[INFO]   comments on columns    : true
[INFO]   comments on keys       : true
[INFO]   comments on links      : true
[INFO]   comments on packages   : true
[INFO]   comments on parameters : true
[INFO]   comments on queues     : true
[INFO]   comments on routines   : true
[INFO]   comments on schemas    : true
[INFO]   comments on sequences  : true
[INFO]   comments on tables     : true
[INFO]   comments on udts       : true
[INFO]   sources                : true
[INFO]   sources on views       : true
[INFO]   daos                   : true
[INFO]   deprecated code        : true
[INFO]   global references (any): true
[INFO]   global references (catalogs): true
[INFO]   global references (keys): true
[INFO]   global references (links): true
[INFO]   global references (queues): true
[INFO]   global references (routines): true
[INFO]   global references (schemas): true
[INFO]   global references (sequences): true
[INFO]   global references (tables): true
[INFO]   global references (udts): true
[INFO]   indexes                : true
[INFO]   instance fields        : true
[INFO]   interfaces             : false
[INFO]   interfaces (immutable) : false
[INFO]   javadoc                : true
[INFO]   keys                   : true
[INFO]   links                  : true
[INFO]   pojos                  : true
[INFO]   pojos (immutable)      : false
[INFO]   queues                 : true
[INFO]   records                : true
[INFO]   routines               : true
[INFO]   sequences              : true
[INFO]   sequenceFlags          : true
[INFO]   table-valued functions : true
[INFO]   tables                 : true
[INFO]   udts                   : true
[INFO]   relations              : true
[INFO] ----------------------------------------------------------
[INFO]                          
[INFO] Generation remarks       
[INFO] ----------------------------------------------------------
[INFO]                          
[INFO] ----------------------------------------------------------
[INFO] Generating catalogs      : Total: 1
[INFO] 

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@  @@        @@@@@@@@@@
@@@@@@@@@@@@@@@@@@@@        @@@@@@@@@@
@@@@@@@@@@@@@@@@  @@  @@    @@@@@@@@@@
@@@@@@@@@@  @@@@  @@  @@    @@@@@@@@@@
@@@@@@@@@@        @@        @@@@@@@@@@
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@@@@@@@@@@        @@        @@@@@@@@@@
@@@@@@@@@@    @@  @@  @@@@  @@@@@@@@@@
@@@@@@@@@@    @@  @@  @@@@  @@@@@@@@@@
@@@@@@@@@@        @@  @  @  @@@@@@@@@@
@@@@@@@@@@        @@        @@@@@@@@@@
@@@@@@@@@@@@@@@@@@@@@@@  @@@@@@@@@@@@@
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@  Thank you for using jOOQ 3.13.2

[INFO] ARRAYs fetched           : 0 (0 included, 0 excluded)
[INFO] Enums fetched            : 0 (0 included, 0 excluded)
[INFO] Packages fetched         : 0 (0 included, 0 excluded)
[INFO] Routines fetched         : 0 (0 included, 0 excluded)
[INFO] Sequences fetched        : 0 (0 included, 0 excluded)
[INFO] Tables fetched           : 15 (15 included, 0 excluded)
[INFO] No schema version is applied for catalog . Regenerating.
[INFO]                          
[INFO] Generating catalog       : DefaultCatalog.java
[INFO] ==========================================================
[INFO] Generating schemata      : Total: 1
[INFO] No schema version is applied for schema tools. Regenerating.
[INFO] Generating schema        : Tools.java
[INFO] ----------------------------------------------------------
[INFO] UDTs fetched             : 0 (0 included, 0 excluded)
[INFO] Generating tables        
[INFO] Synthetic primary keys   : 0 (0 included, 0 excluded)
[INFO] Overriding primary keys  : 19 (0 included, 19 excluded)
[INFO] Generating table         : CmmItembank.java [input=cmm_itembank, output=cmm_itembank, pk=KEY_cmm_itembank_PRIMARY]
[INFO] Embeddables fetched      : 0 (0 included, 0 excluded)
[INFO] Indexes fetched          : 16 (16 included, 0 excluded)
...
[INFO] Generating table         : SysUserBuried.java [input=sys_user_buried, output=sys_user_buried, pk=KEY_sys_user_buried_PRIMARY]
...
[INFO] Tables generated         : Total: 10.023s
[INFO] Generating table POJOs   
...
[INFO] Generating POJO          : SysUserBuried.java
...
[INFO] Table POJOs generated    : Total: 10.169s, +146.329ms
[INFO] Generating DAOs          
...
[INFO] Generating DAO           : SysUserBuriedDao.java
...
[INFO] Table DAOs generated     : Total: 10.215s, +45.81ms
[INFO] Generating table references
[INFO] Table refs generated     : Total: 10.22s, +4.468ms
[INFO] Generating Keys          
[INFO] Keys generated           : Total: 10.231s, +11.205ms
[INFO] Generating Indexes       
[INFO] Indexes generated        : Total: 10.235s, +4.645ms
[INFO] Generating table records 
...
[INFO] Generating record        : SysUserBuriedRecord.java
...
[INFO] Table records generated  : Total: 10.356s, +120.296ms
[INFO] Domains fetched          : 0 (0 included, 0 excluded)
[INFO] Generation finished: tools: Total: 10.36s, +4.609ms
[INFO]                          
[INFO] Removing excess files    
...

执行 maven 编译后可以得到自动生成文件,如下图:

.
|-- DefaultCatalog.java
|-- Indexes.java
|-- Keys.java
|-- Tables.java
|-- Tools.java
`-- tables
    ...
    |-- SysUserBuried.java
    |-- daos
		...
    |   `-- SysUserBuriedDao.java
    |-- pojos
		...
    |   `-- SysUserBuried.java
    `-- records
		...
        `-- SysUserBuriedRecord.java

之后我们就可以配置 HikariCP 数据源并加入到 JOOQ 配置里面,如下图:

public class JOOQUtil {

    private static final String HOST = YamlUtil.getStringValue("datasource.host");
    private static final String DATABASE = YamlUtil.getStringValue("datasource.database-name");
    private static final String USE_UNICODE = YamlUtil.getStringValue("datasource.use-unicode");
    private static final String CHARACTER_ENCODING = YamlUtil.getStringValue("datasource.character-encoding");
    private static final String SERVER_TIMEZONE = YamlUtil.getStringValue("datasource.server-timezone");
    private static final String URL_HEAD = YamlUtil.getStringValue("datasource.url-head");
    private static final String DRIVER_CLASS_NAME = YamlUtil.getStringValue("datasource.driver-class-name");
    private static final String PASSWORD = YamlUtil.getStringValue("datasource.password");
    private static final String USERNAME = YamlUtil.getStringValue("datasource.username");
    private static final String CONNECTION_TEST_QUERY =
        YamlUtil.getStringValue("datasource.hikari.connection-test-query");
    private static final String POOL_NAME = YamlUtil.getStringValue("datasource.hikari.pool-name");

    private static final int MINIMUM_IDLE = YamlUtil.getIntegerValue("datasource.hikari.minimum-idle");
    private static final int PORT = YamlUtil.getIntegerValue("datasource.port");
    private static final int MAXIMUM_POOL_SIZE = YamlUtil.getIntegerValue("datasource.hikari.maximum-pool-size");
    private static final int IDLE_TIMEOUT = YamlUtil.getIntegerValue("datasource.hikari.idle-timeout");
    private static final int CONNECTION_TIMEOUT = YamlUtil.getIntegerValue("datasource.hikari.connection-timeout");
    private static final int PREP_STMT_CACHE_SIZE = YamlUtil.getIntegerValue("datasource.hikari.prep-stmt-cache-size");
    private static final int PREP_STMT_CACHE_SQL_LIMIT =
        YamlUtil.getIntegerValue("datasource.hikari.prep-stmt-cache-sql-limit");

    private static final boolean SSL = YamlUtil.getBooleanValue("datasource.ssl-enable");
    private static final boolean IS_AUTO_COMMIT = YamlUtil.getBooleanValue("datasource.hikari.is-auto-commit");
    private static final boolean ALLOW_POOL_SUSPENSION =
        YamlUtil.getBooleanValue("datasource.hikari.allow-pool-suspension");
    private static final boolean CACHE_PREP_STMTS = YamlUtil.getBooleanValue("datasource.hikari.cache-prep-stmts");
    private static final boolean USE_SERVER_PREP_STMTS =
        YamlUtil.getBooleanValue("datasource.hikari.use-server-prep-stmts");
    private static final boolean USE_LOCAL_SESSION_STATE =
        YamlUtil.getBooleanValue("datasource.hikari.use-local-session-state");
    private static final boolean REWRITE_BATCHED_STATEMENTS =
        YamlUtil.getBooleanValue("datasource.hikari.rewrite-batched-statements");
    private static final boolean CACHE_RESULT_SET_METADATA =
        YamlUtil.getBooleanValue("datasource.hikari.cache-result-set-metadata");
    private static final boolean CACHE_SERVER_CONFIGURATION =
        YamlUtil.getBooleanValue("datasource.hikari.cache-server-configuration");
    private static final boolean ELIDE_SET_AUTO_COMMITS =
        YamlUtil.getBooleanValue("datasource.hikari.elide-set-auto-commits");
    private static final boolean MAINTAIN_TIME_STATS =
        YamlUtil.getBooleanValue("datasource.hikari.maintain-time-stats");
    private static final boolean ALLOW_PUBLIC_KEY_RETRIEVAL =
        YamlUtil.getBooleanValue("datasource.hikari.allow-public-key-retrieval");

    private static final String URL =
        URL_HEAD + "//" + HOST + ":" + PORT + CommonConstants.HTTP_SLASH + DATABASE + "?useUnicode=" + USE_UNICODE
            + "&characterEncoding=" + CHARACTER_ENCODING + "&useSSL=" + SSL + "&serverTimezone=" + SERVER_TIMEZONE;

    private JOOQUtil() {}

    /**
     * 
     * @MethodName: getConfiguration
     * @Description: 获取配置实例并设置jooq当前对应数据库
     * @author yuanzhenhui
     * @return Configuration
     * @date 2023-04-13 04:31:36
     */
    public Configuration getConfiguration() {
        Configuration configuration = new DefaultConfiguration();
        configuration.set(SQLDialect.MYSQL);
        configuration.set(getHikariCPDataProvider());
        return configuration;
    }

    private static class SingletonInstance {
        private static final JOOQUtil INSTANCE = new JOOQUtil();
        private static final ConnectionProvider provider = new DataSourceConnectionProvider(getHikariCPDataSource());
    }

    public static JOOQUtil getInstance() {
        return SingletonInstance.INSTANCE;
    }

    public static final ConnectionProvider getHikariCPDataProvider() {
        return SingletonInstance.provider;
    }

    /**
     * 
     * @MethodName: getHikariCPDataSource
     * @Description: 数据库连接池配置信息
     * @author yuanzhenhui
     * @return DataSource
     * @date 2023-04-13 04:31:48
     */
    private static DataSource getHikariCPDataSource() {
        HikariConfig hikariConfig = new HikariConfig();
        hikariConfig.setJdbcUrl(URL);
        hikariConfig.setDriverClassName(DRIVER_CLASS_NAME);
        hikariConfig.setUsername(USERNAME);
        hikariConfig.setPassword(PASSWORD);
        hikariConfig.setAutoCommit(IS_AUTO_COMMIT);
        hikariConfig.setAllowPoolSuspension(ALLOW_POOL_SUSPENSION);
        hikariConfig.setConnectionTestQuery(CONNECTION_TEST_QUERY);
        hikariConfig.setPoolName(POOL_NAME);
        hikariConfig.setMinimumIdle(MINIMUM_IDLE);
        hikariConfig.setMaximumPoolSize(MAXIMUM_POOL_SIZE);
        hikariConfig.setIdleTimeout(IDLE_TIMEOUT);
        hikariConfig.setConnectionTimeout(CONNECTION_TIMEOUT);
        hikariConfig.addDataSourceProperty("cachePrepStmts", CACHE_PREP_STMTS);
        hikariConfig.addDataSourceProperty("prepStmtCacheSize", PREP_STMT_CACHE_SIZE);
        hikariConfig.addDataSourceProperty("prepStmtCacheSqlLimit", PREP_STMT_CACHE_SQL_LIMIT);
        hikariConfig.addDataSourceProperty("useServerPrepStmts", USE_SERVER_PREP_STMTS);
        hikariConfig.addDataSourceProperty("useLocalSessionState", USE_LOCAL_SESSION_STATE);
        hikariConfig.addDataSourceProperty("useSsl", SSL);
        hikariConfig.addDataSourceProperty("serverTimezone", SERVER_TIMEZONE);
        hikariConfig.addDataSourceProperty("rewriteBatchedStatements", REWRITE_BATCHED_STATEMENTS);
        hikariConfig.addDataSourceProperty("cacheResultSetMetadata", CACHE_RESULT_SET_METADATA);
        hikariConfig.addDataSourceProperty("cacheServerConfiguration", CACHE_SERVER_CONFIGURATION);
        hikariConfig.addDataSourceProperty("elideSetAutoCommits", ELIDE_SET_AUTO_COMMITS);
        hikariConfig.addDataSourceProperty("maintainTimeStats", MAINTAIN_TIME_STATS);
        hikariConfig.addDataSourceProperty("allowPublicKeyRetrieval", ALLOW_PUBLIC_KEY_RETRIEVAL);
        return new HikariDataSource(hikariConfig);
    }
}

至此,JOOQ 的所有配置已经完成了,那怎么使用呢?其实与 Redis 的也类似,我们通过一个实例进行说明,如下图:

public class SysUserBuriedService extends AbstractVerticle {

    private static final Logger LOGGER = LogManager.getLogger(SysUserBuriedService.class);

    // 每个批次执行行数
    @PropLoader(key = "redis.batch-num")
    private static int batchNum;

    private static SysUserBuriedDao subDao;
    private static RedisAPI redis;

    private List<String> paramList;
    private String blockNum = "0";

    @Override
    public void start() {
        YamlUtil.propLoadSetter(this);
        subDao = new SysUserBuriedDao(JOOQUtil.getInstance().getConfiguration(), vertx);

        // -----------------
        // 创建redis客户端连接
        // -----------------
        Redis.createClient(vertx, RedisUtil.getInstance().getConfiguration()).connect(onConnect -> {
            if (onConnect.succeeded()) {
                redis = RedisAPI.api(onConnect.result());
            }
        });
    }

    /**
     * 
     * @MethodName: cron2SaveRedisAccess
     * @Description: 定时保存redis数据
     * @author yuanzhenhui void
     * @date 2023-04-13 05:04:00
     */
    public void cron2SaveRedisAccess() {
        LOGGER.debug("func SysUserBuriedService.cron2SaveRedisAccess has begin!! ");
        paramList = new ArrayList<>();
        paramList.add(blockNum);
        paramList.add("COUNT");
        paramList.add(String.valueOf(batchNum));
        redis.scan(paramList, this::redisScanToGet);
    }

    /**
     * 
     * @MethodName: redisScanToGet
     * @Description: redis做扫描并获取数据
     * @author yuanzhenhui
     * @param scanResp
     *            void
     * @date 2023-04-13 05:04:16
     */
    private void redisScanToGet(AsyncResult<Response> scanResp) {
        if (scanResp.succeeded()) {

            // ---------
            // 获取块编码
            // ---------
            blockNum = scanResp.result().get(0).toString();

            // ------------
            // 获取key数据集
            // ------------
            Response keyArrResp = scanResp.result().get(1);
            if (null != keyArrResp) {
                paramList = keyArrResp.stream().map(Response::toString).collect(Collectors.toList());

                // ---------------------
                // 通过mget同时获取多个key
                // ---------------------
                redis.mget(paramList, this::databaseToInsert);
            }
        } else {
            LOGGER.error("func[SysUserBuriedService.redisScanToGet] Exception [{} - {}]",
                new Object[] {scanResp.cause(), scanResp.result()});
        }
    }

    /**
     * 
     * @MethodName: databaseToInsert
     * @Description: 数据库进行插入
     * @author yuanzhenhui
     * @param mgetResp
     *            void
     * @date 2022-08-10 06:21:09
     */
    private void databaseToInsert(AsyncResult<Response> mgetResp) {

        // ------------
        // 异步获取成功后
        // ------------
        if (mgetResp.succeeded()) {
            Response mgetArrResp = mgetResp.result();
            if (null != mgetArrResp) {
                List<SysUserBuried> puaList = mgetArrResp.stream()
                    .map(mget -> new SysUserBuried(new JsonObject(mget.toString()))).collect(Collectors.toList());

                // --------------------------
                // 将获取的集合进行批量插入数据库
                // --------------------------
                if (null != puaList && !puaList.isEmpty()) {
                    subDao.insert(puaList, true).whenCompleteAsync((opt, e) -> {
                        if (null == e) {
                            
                            // ---------------------------------------------
                            // 这里采用的是 unlink 的方式将 redis 中的数据给清除掉
                            // ---------------------------------------------
                            redis.unlink(paramList, this::redisUnlinkDelete);
                        } else {
                            LOGGER.error(
                                "func[SysUserBuriedService.databaseToInsert mysql inserted] Exception [{} - {}] stackTrace[{}] ",
                                new Object[] {e.getCause(), e.getMessage(), Arrays.deepToString(e.getStackTrace())});
                        }
                    });
                }
            }
        }
    }

    /**
     * 
     * @MethodName: redisUnlinkDelete
     * @Description: redis服务进行unlink删除
     * @author yuanzhenhui
     * @param unlinkResp
     *            void
     * @date 2022-08-10 06:19:07
     */
    private void redisUnlinkDelete(AsyncResult<Response> unlinkResp) {
        if (unlinkResp.failed()) {
            LOGGER.error("func[SysUserBuriedService.redisUnlinkDelete redis unlink key] Exception [{} - {}]",
                new Object[] {unlinkResp.cause(), unlinkResp.result()});
        } else {
            LOGGER.debug("func SysUserBuriedService.redisUnlinkDelete has end!! ");
        }
    }
}

从上图得知,要使用 JOOQ 我们可以在 start 方法中对他进行注入得到对应的 dao 方法。如下图:

@Override
public void start() {
    ...
    
    subDao = new SysUserBuriedDao(JOOQUtil.getInstance().getConfiguration(), vertx);

    ...
}

具体的做法跟 redis 很像这里就不展开说了。接下来就通过定时器去调用 cron2SaveRedisAccess 方法即可。还记得第一节的时候说过的定时器吗?

public static void main(String[] args) {
    BootstrapConfig.setupAndDeploy(vtx -> {
        LOGGER.info(" --------------- 定时器开始执行 --------------- ");
        SysUserBuriedService userAccess = new SysUserBuriedService();
        vtx.setPeriodic(CommonConstants.CRON, id -> userAccess.cron2SaveRedisAccess());
    });
}

其实就是执行这里的 cron2SaveRedisAccess 方法。在 cron2SaveRedisAccess 方法中通过传入参数集合调用 redis 客户端拿到对应扫描后的数据集,如下图:

public void cron2SaveRedisAccess() {
    LOGGER.debug("func SysUserBuriedService.cron2SaveRedisAccess has begin!! ");
    paramList = new ArrayList<>();
    paramList.add(blockNum);
    paramList.add("COUNT");
    paramList.add(String.valueOf(batchNum));
    redis.scan(paramList, this::redisScanToGet);
}

scan 方法会存在回调处理,为了能够阅读清晰这里做了方法后的拆分,后续将交给 redisScanToGet 方法处理。如下图:

private void redisScanToGet(AsyncResult<Response> scanResp) {
    if (scanResp.succeeded()) {

        // ---------
        // 获取块编码
        // ---------
        blockNum = scanResp.result().get(0).toString();

        // ------------
        // 获取key数据集
        // ------------
        Response keyArrResp = scanResp.result().get(1);
        if (null != keyArrResp) {
            paramList = keyArrResp.stream().map(Response::toString).collect(Collectors.toList());

            // ---------------------
            // 通过mget同时获取多个key
            // ---------------------
            redis.mget(paramList, this::databaseToInsert);
        }
    } else {
        LOGGER.error("func[SysUserBuriedService.redisScanToGet] Exception [{} - {}]",
            new Object[] {scanResp.cause(), scanResp.result()});
    }
}

方法将根据回调传入结果进行判断,如果回调状态显示“成功”,那么通过 scanResp.result() 先获取块编码,然后在获取 key 的数据集 Response 。若 Response 数据集不为空,这遍历它并转换成一个 List 集合,以这个 List 集合作为传参使用 redis 的 mget 方法对 redis 中数据进行二次提取。同理,mget方法也有回调处理,这里将其进行拆解,拆解后代码将全部加入到 databaseToInsert 方法中。如下图:

private void databaseToInsert(AsyncResult<Response> mgetResp) {

    // ------------
    // 异步获取成功后
    // ------------
    if (mgetResp.succeeded()) {
        Response mgetArrResp = mgetResp.result();
        if (null != mgetArrResp) {
            List<SysUserBuried> puaList = mgetArrResp.stream()
                .map(mget -> new SysUserBuried(new JsonObject(mget.toString()))).collect(Collectors.toList());

            // --------------------------
            // 将获取的集合进行批量插入数据库
            // --------------------------
            if (null != puaList && !puaList.isEmpty()) {
                subDao.insert(puaList, true).whenCompleteAsync((opt, e) -> {
                    if (null == e) {
                        
                        // ---------------------------------------------
                        // 这里采用的是 unlink 的方式将 redis 中的数据给清除掉
                        // ---------------------------------------------
                        redis.unlink(paramList, this::redisUnlinkDelete);
                    } else {
                        LOGGER.error(
                            "func[SysUserBuriedService.databaseToInsert mysql inserted] Exception [{} - {}] stackTrace[{}] ",
                            new Object[] {e.getCause(), e.getMessage(), Arrays.deepToString(e.getStackTrace())});
                    }
                });
            }
        }
    }
}

同理,获取到 mget 的处理结果后先进行“成功”判断,若成功则对 Response 集合进行遍历并重新整理成 SysUserBuried 对象集合,之后就能够保存到数据库了。因为在 start 方法中已经对 JOOQ 的 dao 进行了注入,这里直接可以使用

subDao.insert(puaList, true).whenCompleteAsync((opt, e)

进行数据批量插入处理。由于JOOQ 是支持 CompletableFuture 做异步处理的,如下图:

...
<dependency>
  <groupId>io.github.jklingsporngroupId>
  <artifactId>vertx-jooq-completablefuture-jdbcartifactId>
  <version>${jooq.rx.version}version>
dependency>
...

所以可以通过 whenCompleteAsync 进行回调。在插入成功后在进行 redis 的 unlink 处理就完成了。至于后面的 redisUnlinkDelete 方法其实就是做回调输出而已,并没有什么实质性的操作。

至此,JOOQ 对数据库操作和 redis 操作都已经全部演示完毕,本次简单的 demo 也已经实现数据闭环,更多Vert.x的内容等之后有空再归纳出来吧(虽然已经成型了)。

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