动态数据源-支持参数方式指定数据源

epmet-commons/epmet-commons-dynamic-datasource/pom.xml

@@ -19,6 +19,12 @@
             <version>2.0.0</version>
             <scope>provided</scope>
         </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+            <scope>provided</scope>
+        </dependency>
     </dependencies>
 
     <build>

epmet-commons/epmet-commons-dynamic-datasource/src/main/java/com/epmet/commons/dynamic/datasource/aspect/DataSourceAspect.java

@@ -9,8 +9,8 @@
 package com.epmet.commons.dynamic.datasource.aspect;
 
 import com.epmet.commons.dynamic.datasource.annotation.DataSource;
-import com.epmet.commons.dynamic.datasource.bean.DataSourceParam;
 import com.epmet.commons.dynamic.datasource.config.DynamicContextHolder;
+import com.epmet.commons.dynamic.datasource.util.HttpRequestDataSourceNameFetcher;
 import org.apache.commons.lang3.StringUtils;
 import org.aspectj.lang.ProceedingJoinPoint;
 import org.aspectj.lang.annotation.Around;
@@ -19,12 +19,12 @@ import org.aspectj.lang.annotation.Pointcut;
 import org.aspectj.lang.reflect.MethodSignature;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.core.Ordered;
 import org.springframework.core.annotation.Order;
 import org.springframework.stereotype.Component;
 
 import java.lang.reflect.Method;
-import java.lang.reflect.Parameter;
 
 /**
  * 多数据源，切面处理类
@@ -38,6 +38,9 @@ import java.lang.reflect.Parameter;
 public class DataSourceAspect  {
     protected Logger logger = LoggerFactory.getLogger(getClass());
 
+    @Autowired
+    private HttpRequestDataSourceNameFetcher httpRequestDataSourceNameFetcher;
+
     @Pointcut("@annotation(com.epmet.commons.dynamic.datasource.annotation.DataSource) " +
             "|| @within(com.epmet.commons.dynamic.datasource.annotation.DataSource)")
     public void dataSourcePointCut() {
@@ -55,12 +58,14 @@ public class DataSourceAspect  {
         if(targetDataSource != null || methodDataSource != null){
             String value;
             if(methodDataSource != null){
-                value = getDatasourceName(methodDataSource, signature.getMethod().getParameters(), point.getArgs());
+                value = getDatasourceName(methodDataSource);
             }else {
-                value = getDatasourceName(targetDataSource, signature.getMethod().getParameters(), point.getArgs());
+                value = getDatasourceName(targetDataSource);
             }
 
-            DynamicContextHolder.push(value);
+            if (StringUtils.isNotBlank(value)) {
+                DynamicContextHolder.push(value);
+            }
             logger.debug("set datasource is {}", value);
         }
 
@@ -77,33 +82,16 @@ public class DataSourceAspect  {
      * @param dataSource
      * @return
      */
-    public String getDatasourceName(DataSource dataSource, Parameter[] methodParameters, Object[] methodArgValues) {
+    public String getDatasourceName(DataSource dataSource) {
+        String dataSourceName = null;
         if (dataSource.datasourceNameFromArg()) {
-            // 1.从参数中动态获取数据源名称
-            String datasourceNameFromParam = getDatasourceNameFromArg(methodParameters, methodArgValues);
-            if (StringUtils.isNotBlank(datasourceNameFromParam)) {
-                // 如果有DatasourceParam类型的参数并且设置了datasourceName值，那么返回这个值，否则使用硬编码的
-                return datasourceNameFromParam;
-            }
+            // 1.优先从http header中动态获取数据源名称
+            dataSourceName = httpRequestDataSourceNameFetcher.fetchDataSourceName();
         }
-        // 2.硬编码指定数据源名称
-        return dataSource.value();
-    }
-
-    /**
-     * 从参数中取数据源名称
-     * @param parameters
-     * @param argsObject
-     * @return
-     */
-    public String getDatasourceNameFromArg(Parameter[] parameters, Object[] argsObject) {
-        for (int i = 0; i < parameters.length; i++) {
-            if (parameters[i].getType() == DataSourceParam.class) {
-                DataSourceParam param = (DataSourceParam) argsObject[i];
-                return param.getDatasourceName();
-            }
+        // 2.硬编码指定默认的数据源名称
+        if (StringUtils.isBlank(dataSourceName)) {
+            dataSourceName = dataSource.value();
         }
-
-        return null;
+        return dataSourceName;
     }
 }

epmet-commons/epmet-commons-dynamic-datasource/src/main/java/com/epmet/commons/dynamic/datasource/config/DynamicDataSource.java

@@ -8,6 +8,8 @@
 
 package com.epmet.commons.dynamic.datasource.config;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.jdbc.datasource.lookup.AbstractRoutingDataSource;
 
 /**
@@ -18,9 +20,13 @@ import org.springframework.jdbc.datasource.lookup.AbstractRoutingDataSource;
  */
 public class DynamicDataSource extends AbstractRoutingDataSource {
 
+    private Logger logger = LoggerFactory.getLogger(getClass());
+
     @Override
     protected Object determineCurrentLookupKey() {
-        return DynamicContextHolder.peek();
+        String datasourceName = DynamicContextHolder.peek();
+        logger.info("使用的数据源名称为:{}", datasourceName);
+        return datasourceName;
     }
 
 }

epmet-commons/epmet-commons-dynamic-datasource/src/main/java/com/epmet/commons/dynamic/datasource/enums/DataSourceEnum.java

@@ -0,0 +1,43 @@
+package com.epmet.commons.dynamic.datasource.enums;
+
+/**
+ * 服务-数据源flag-数据源名称对应关系
+ */
+public enum DataSourceEnum {
+
+	DATA_STATISTICAL_REAL("data-statistical-server", "real", "stats"),
+	DATA_STATISTICAL_FAKE("data-statistical-server", "fake", "statsDisplay"),
+	;
+
+	private String serviceName;
+	private String flag;
+	private String dataSourceName;
+
+	DataSourceEnum(String serviceName, String flag, String dataSourceName) {
+		this.serviceName = serviceName;
+		this.flag = flag;
+		this.dataSourceName = dataSourceName;
+	}
+
+	public static DataSourceEnum getEnum(String serviceName, String flag) {
+		DataSourceEnum[] values = DataSourceEnum.values();
+		for (DataSourceEnum value : values) {
+			if (value.serviceName.equals(serviceName) && value.flag.equals(flag)) {
+				return value;
+			}
+		}
+		return null;
+	}
+
+	public String getServiceName() {
+		return serviceName;
+	}
+
+	public String getFlag() {
+		return flag;
+	}
+
+	public String getDataSourceName() {
+		return dataSourceName;
+	}
+}

epmet-commons/epmet-commons-dynamic-datasource/src/main/java/com/epmet/commons/dynamic/datasource/util/AbstractDataSourceNameFetcher.java

@@ -0,0 +1,13 @@
+package com.epmet.commons.dynamic.datasource.util;
+
+import com.epmet.commons.dynamic.datasource.enums.DataSourceEnum;
+
+public abstract class AbstractDataSourceNameFetcher {
+
+    public abstract String fetchDataSourceName();
+
+    //protected String getDataSourceName(String dataType, String serviceName) {
+    //    return DataSourceEnum.getEnum(serviceName, dataType)
+    //}
+
+}

epmet-commons/epmet-commons-dynamic-datasource/src/main/java/com/epmet/commons/dynamic/datasource/util/HttpRequestDataSourceNameFetcher.java

@@ -0,0 +1,44 @@
+package com.epmet.commons.dynamic.datasource.util;
+
+import com.epmet.commons.dynamic.datasource.enums.DataSourceEnum;
+import com.epmet.commons.tools.exception.RenException;
+import org.apache.commons.lang3.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.core.env.Environment;
+import org.springframework.stereotype.Component;
+import org.springframework.web.context.request.RequestContextHolder;
+import org.springframework.web.context.request.ServletRequestAttributes;
+
+/**
+ * Http请求中获取数据源名称
+ */
+@Component
+public class HttpRequestDataSourceNameFetcher extends AbstractDataSourceNameFetcher {
+
+    protected Logger logger = LoggerFactory.getLogger(getClass());
+
+    @Autowired
+    private Environment environment;
+
+    @Override
+    public String fetchDataSourceName() {
+        ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
+        javax.servlet.http.HttpServletRequest request = requestAttributes.getRequest();
+        String dataType = request.getHeader("Data-Type");
+
+        logger.info("HttpRequestDataSourceNameFetcher获取到的DataType为:{}", dataType);
+        if (StringUtils.isBlank(dataType)) {
+            return null;
+        }
+
+        String serviceName = environment.getProperty("spring.application.name");
+        DataSourceEnum dataSourceEnum = DataSourceEnum.getEnum(serviceName, dataType);
+        if (dataSourceEnum == null) {
+            throw new RenException(String.format("根据前端传入的DataType[%s]无法找到对应的数据源。", dataType));
+        }
+        logger.info("HttpRequestDataSourceNameFetcher根据DataType:[{}]获取到的DataSourceEnum为{}", dataType, dataSourceEnum.getDataSourceName());
+        return dataSourceEnum.getDataSourceName();
+    }
+}

epmet-module/data-statistical/data-statistical-client/src/main/java/com/epmet/constant/DataSourceConstant.java

@@ -4,6 +4,7 @@ public interface DataSourceConstant {
 
     String GOV_ORG = "govOrg";
     String STATS = "stats";
+    String STATS_DISPLAY = "statsDisplay";
     String GOV_ISSUE = "govIssue";
     String GOV_PROJECT = "govProject";
     String GOV_VOICE = "govVoice";

epmet-module/data-statistical/data-statistical-server/src/main/java/com/epmet/controller/DemoController.java

@@ -1,11 +1,15 @@
 package com.epmet.controller;
 
 import com.epmet.commons.tools.exception.RenException;
+import com.epmet.commons.tools.utils.Result;
 import com.epmet.dto.AgencySubTreeDto;
+import com.epmet.entity.stats.DimAgencyEntity;
 import com.epmet.service.StatsDemoService;
+import com.epmet.service.stats.DimAgencyService;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
@@ -26,6 +30,9 @@ public class DemoController {
     @Autowired
     private ExecutorService executorService;
 
+    @Autowired
+    private DimAgencyService dimAgencyService;
+
     @GetMapping("testAlarm")
     public void testAlarm() {
         //for (int i = 0; i < 20; i++) {
@@ -91,4 +98,14 @@ public class DemoController {
         List<AgencySubTreeDto> result = demoService.getAllAgency();
         return result;
     }
+
+    /**
+     * 参数指定数据源
+     * @return
+     */
+    @PostMapping("paramDataSource")
+    public Result paramDataSource() {
+        List<DimAgencyEntity> list = dimAgencyService.getAgencyListByCustomerId("ba7c0b5b21e882b263ee8456e2cfb63e");
+        return new Result().ok(list);
+    }
 }

epmet-module/data-statistical/data-statistical-server/src/main/java/com/epmet/service/stats/impl/DimAgencyServiceImpl.java

@@ -19,12 +19,14 @@ package com.epmet.service.stats.impl;
 
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import com.baomidou.mybatisplus.core.metadata.IPage;
+import com.epmet.commons.dynamic.datasource.annotation.DataSource;
 import com.epmet.commons.mybatis.service.impl.BaseServiceImpl;
 import com.epmet.commons.tools.exception.EpmetErrorCode;
 import com.epmet.commons.tools.exception.RenException;
 import com.epmet.commons.tools.page.PageData;
 import com.epmet.commons.tools.utils.ConvertUtils;
 import com.epmet.commons.tools.constant.FieldConstant;
+import com.epmet.constant.DataSourceConstant;
 import com.epmet.constant.DimAgencyConstant;
 import com.epmet.constant.RobotConstant;
 import com.epmet.constant.StatsSubject;
@@ -208,6 +210,7 @@ public class DimAgencyServiceImpl extends BaseServiceImpl<DimAgencyDao, DimAgenc
         return baseDao.selectTopAgency(customerId);
     }
 
+    @DataSource(value = DataSourceConstant.STATS, datasourceNameFromArg = true)
 	@Override
 	public List<DimAgencyEntity> getAgencyListByCustomerId(String customerId) {
         if (StringUtils.isBlank(customerId)){

epmet-module/data-statistical/data-statistical-server/src/main/resources/bootstrap.yml

@@ -155,6 +155,16 @@ dynamic:
       url: @datasource.druid.user.url@
       username: @datasource.druid.user.username@
       password: @datasource.druid.user.password@
+    stats:
+      driver-class-name: com.mysql.cj.jdbc.Driver
+      url: @datasource.druid.stats.url@
+      username: @datasource.druid.stats.username@
+      password: @datasource.druid.stats.password@
+    statsDisplay:
+      driver-class-name: com.mysql.cj.jdbc.Driver
+      url: @datasource.druid.statsdisplay.url@
+      username: @datasource.druid.statsdisplay.username@
+      password: @datasource.druid.statsdisplay.password@
 
 thread:
   # 线程池配置

epmet-module/data-statistical/data-statistical-server/src/main/resources/mapper/stats/DimAgencyDao.xml

@@ -128,6 +128,7 @@
             ID,
             CUSTOMER_ID,
             PID,
+            AGENCY_NAME,
             LEVEL
         FROM
             dim_agency