Merge pull request #416 from dinghuang/feature-handle-table

[ADD] spring optimize

Author: xlorne

txlcn-tc/src/main/java/com/codingapi/txlcn/tc/annotation/TableId.java

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2011-2019, hubin ([email protected]).
+ * <p>
+ * 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
+ * <p>
+ * https://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * 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 com.codingapi.txlcn.tc.annotation;
+
+import java.lang.annotation.*;
+
+/**
+ * @author [email protected]
+ * @since 2019/7/29
+ */
+@Documented
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.FIELD)
+public @interface TableId {
+
+    /**
+     * 字段值（驼峰命名方式，该值可无）
+     */
+    String value() default "";
+
+}

txlcn-tc/src/main/java/com/codingapi/txlcn/tc/annotation/TableName.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2011-2019, hubin ([email protected]).
+ * <p>
+ * 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
+ * <p>
+ * https://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * 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 com.codingapi.txlcn.tc.annotation;
+
+import java.lang.annotation.*;
+
+/**
+ * @author [email protected]
+ * @since 2019/7/29
+ */
+@Documented
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.TYPE)
+public @interface TableName {
+
+    /**
+     * 实体对应的表名
+     */
+    String value() default "";
+}

txlcn-tc/src/main/java/com/codingapi/txlcn/tc/core/transaction/txc/analy/PrimaryKeyListVisitor.java

@@ -76,8 +76,14 @@ private Map<String, Object> newKeyValues(List<Expression> expressions) {
         Map<String, Object> keyValues = new HashMap<>();
         for (int i = 0; i < columns.size(); i++) {
             columns.get(i).setTable(table);
+            //解决Long类型字段作为主键空指针异常
             if (primaryKeys.contains(columns.get(i).getFullyQualifiedName())) {
-                Object expression = expressions.get(i).getASTNode().jjtGetValue();
+                Object expression = null;
+                if (expressions.get(i).getASTNode() != null) {
+                    expressions.get(i).getASTNode().jjtGetValue();
+                } else {
+                    expression = expressions.get(i);
+                }
                 keyValues.put(columns.get(i).getFullyQualifiedName(),
                         Reflection.invokeN(expression.getClass(), "getValue", expression, new Object[0]));
             }

txlcn-tc/src/main/java/com/codingapi/txlcn/tc/core/transaction/txc/analy/PrimaryKeyListVisitorHandler.java

@@ -0,0 +1,35 @@
+package com.codingapi.txlcn.tc.core.transaction.txc.analy;
+
+import com.codingapi.txlcn.tc.core.transaction.txc.analy.def.PrimaryKeysProvider;
+import com.codingapi.txlcn.tc.core.transaction.txc.analy.util.AnnotationUtils;
+import com.codingapi.txlcn.tc.core.transaction.txc.analy.util.ClassUtils;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+
+import java.util.List;
+import java.util.Map;
+
+/**
+ * @author [email protected]
+ * @since 2019/7/28
+ */
+@Component
+public class PrimaryKeyListVisitorHandler implements PrimaryKeysProvider {
+
+    @Value("${tx-lcn.primary-key-package}")
+    private String primaryKeyPackage;
+
+    @Override
+    public Map<String, List<String>> provide() {
+        if (primaryKeyPackage != null) {
+            //扫描所有注解，把主键拿进来
+            // 获取特定包下所有的类(包括接口和类)
+            List<Class<?>> clsList = ClassUtils.getClasses(primaryKeyPackage);
+            //输出所有使用了特定注解的类的注解值
+            return AnnotationUtils.getPrimaryKeyList(clsList);
+        } else {
+            return null;
+        }
+    }
+
+}

txlcn-tc/src/main/java/com/codingapi/txlcn/tc/core/transaction/txc/analy/util/AnnotationUtils.java

@@ -0,0 +1,66 @@
+package com.codingapi.txlcn.tc.core.transaction.txc.analy.util;
+
+import com.codingapi.txlcn.tc.annotation.TableId;
+import com.codingapi.txlcn.tc.annotation.TableName;
+
+import java.lang.reflect.Field;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * @author [email protected]
+ * @since 2019/7/29
+ */
+public class AnnotationUtils {
+
+    private static Pattern humpPattern = Pattern.compile("[A-Z]");
+
+    public static Map<String, List<String>> getPrimaryKeyList(List<Class<?>> clsList) {
+        if (clsList != null && clsList.size() > 0) {
+            Map<String, List<String>> map = new HashMap<>(clsList.size());
+            for (Class<?> cls : clsList) {
+                //获取类中的所有的方法
+                boolean classHasAnnotation = cls.isAnnotationPresent(TableName.class);
+                if (classHasAnnotation) {
+                    TableName tableName = cls.getAnnotation(TableName.class);
+                    if (tableName.value().length() != 0) {
+                        Field[] fields = cls.getDeclaredFields();
+                        String tableIdVale = null;
+                        for (Field field : fields) {
+                            boolean fieldHasAnnotation = field.isAnnotationPresent(TableId.class);
+                            if (fieldHasAnnotation) {
+                                TableId tableId = field.getAnnotation(TableId.class);
+                                //输出注解属性
+                                if (tableId.value().length() != 0) {
+                                    tableIdVale = tableId.value();
+                                } else {
+                                    //转驼峰
+                                    tableIdVale = humpToLine(field.getName());
+                                }
+                                break;
+                            }
+                        }
+                        map.put(tableName.value(), Collections.singletonList(tableIdVale));
+                    }
+                }
+            }
+            return map;
+        } else {
+            return null;
+        }
+    }
+
+    public static String humpToLine(String str) {
+        Matcher matcher = humpPattern.matcher(str);
+        StringBuffer sb = new StringBuffer();
+        while (matcher.find()) {
+            matcher.appendReplacement(sb, "_" + matcher.group(0).toLowerCase());
+        }
+        matcher.appendTail(sb);
+        return sb.toString();
+    }
+}

txlcn-tc/src/main/java/com/codingapi/txlcn/tc/core/transaction/txc/analy/util/ClassUtils.java

@@ -0,0 +1,116 @@
+package com.codingapi.txlcn.tc.core.transaction.txc.analy.util;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.File;
+import java.io.IOException;
+import java.net.JarURLConnection;
+import java.net.URL;
+import java.net.URLDecoder;
+import java.util.ArrayList;
+import java.util.Enumeration;
+import java.util.List;
+import java.util.jar.JarEntry;
+import java.util.jar.JarFile;
+
+/**
+ * @author [email protected]
+ * @since 2019/7/29
+ */
+public class ClassUtils {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(ClassUtils.class);
+
+    private static final String FILE = "file";
+    private static final String JAR = "jar";
+    private static final String CLASS_SIGN = ".class";
+
+    /**
+     * 从包package中获取所有的Class
+     *
+     * @param packageName packageName
+     * @return List
+     */
+    public static List<Class<?>> getClasses(String packageName) {
+        List<Class<?>> classes = new ArrayList<>();
+        boolean recursive = true;
+        String packageDirName = packageName.replace('.', '/');
+        Enumeration<URL> dirs;
+        try {
+            dirs = Thread.currentThread().getContextClassLoader().getResources(packageDirName);
+            while (dirs.hasMoreElements()) {
+                URL url = dirs.nextElement();
+                String protocol = url.getProtocol();
+                if (FILE.equals(protocol)) {
+                    String filePath = URLDecoder.decode(url.getFile(), "UTF-8");
+                    findAndAddClassesInPackageByFile(packageName, filePath, recursive, classes);
+                } else if (JAR.equals(protocol)) {
+                    JarFile jar;
+                    try {
+                        jar = ((JarURLConnection) url.openConnection()).getJarFile();
+                        Enumeration<JarEntry> entries = jar.entries();
+                        while (entries.hasMoreElements()) {
+                            JarEntry entry = entries.nextElement();
+                            String name = entry.getName();
+                            if (name.charAt(0) == '/') {
+                                name = name.substring(1);
+                            }
+                            if (name.startsWith(packageDirName)) {
+                                int idx = name.lastIndexOf('/');
+                                if (idx != -1) {
+                                    packageName = name.substring(0, idx).replace('/', '.');
+                                }
+                                if (idx != -1) {
+                                    if (name.endsWith(CLASS_SIGN) && !entry.isDirectory()) {
+                                        // 去掉后面的".class" 获取真正的类名
+                                        String className = name.substring(packageName.length() + 1, name.length() - 6);
+                                        try {
+                                            classes.add(Class.forName(packageName + '.' + className));
+                                        } catch (ClassNotFoundException e) {
+                                            LOGGER.error(e.getMessage());
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                    } catch (IOException e) {
+                        LOGGER.error(e.getMessage());
+                    }
+                }
+            }
+        } catch (IOException e) {
+            LOGGER.error(e.getMessage());
+        }
+        return classes;
+    }
+
+    /**
+     * 以文件的形式来获取包下的所有Class
+     *
+     * @param packageName packageName
+     * @param packagePath packagePath
+     * @param recursive   recursive
+     * @param classes     classes
+     */
+    private static void findAndAddClassesInPackageByFile(String packageName, String packagePath, final boolean recursive, List<Class<?>> classes) {
+        File dir = new File(packagePath);
+        if (!dir.exists() || !dir.isDirectory()) {
+            return;
+        }
+        File[] dirFiles = dir.listFiles(file -> (recursive && file.isDirectory()) || (file.getName().endsWith(CLASS_SIGN)));
+        assert dirFiles != null;
+        for (File file : dirFiles) {
+            if (file.isDirectory()) {
+                findAndAddClassesInPackageByFile(packageName + "." + file.getName(), file.getAbsolutePath(), recursive, classes);
+            } else {
+                String className = file.getName().substring(0, file.getName().length() - 6);
+                try {
+                    classes.add(Class.forName(packageName + '.' + className));
+                } catch (ClassNotFoundException e) {
+                    LOGGER.error(e.getMessage());
+                }
+            }
+        }
+    }
+}

txlcn-tracing/src/main/java/com/codingapi/txlcn/tracing/TracingAutoConfiguration.java

@@ -15,6 +15,8 @@
  */
 package com.codingapi.txlcn.tracing;
 
+import com.codingapi.txlcn.tracing.spring.TracingSpringContextUtils;
+import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.ComponentScan;
 import org.springframework.context.annotation.Configuration;
 
@@ -28,4 +30,8 @@
 @ComponentScan
 public class TracingAutoConfiguration {
 
+    @Bean
+    public TracingSpringContextUtils tracingSpringContextUtils() {
+        return new TracingSpringContextUtils();
+    }
 }

txlcn-tracing/src/main/java/com/codingapi/txlcn/tracing/http/ribbon/TxlcnZoneAvoidanceRule.java

@@ -17,6 +17,8 @@
 
 import com.alibaba.fastjson.JSONObject;
 import com.codingapi.txlcn.tracing.TracingContext;
+import com.codingapi.txlcn.tracing.spring.SpringConfig;
+import com.codingapi.txlcn.tracing.spring.TracingSpringContextUtils;
 import com.netflix.loadbalancer.Server;
 import com.netflix.loadbalancer.ZoneAvoidanceRule;
 import lombok.extern.slf4j.Slf4j;
@@ -57,7 +59,19 @@ public Server choose(Object key) {
 
         // 1. 自己加入此事务组调用链
         assert Objects.nonNull(registration);
-        TracingContext.tracing().addApp(registration.getServiceId(), registration.getHost() + ":" + registration.getPort());
+        //兼容springBoot 2.0以下版本
+        Boolean exitHost;
+        try {
+            exitHost = registration.getHost() != null;
+        } catch (NoSuchMethodError noSuchMethodError) {
+            exitHost = false;
+        }
+        if (!exitHost) {
+            SpringConfig springConfig = (SpringConfig) TracingSpringContextUtils.getContext().getBean("springConfig");
+            TracingContext.tracing().addApp(registration.getServiceId(), springConfig.getHost() + ":" + springConfig.getPort());
+        } else {
+            TracingContext.tracing().addApp(registration.getServiceId(), registration.getHost() + ":" + registration.getPort());
+        }
 
         // 2. 获取所有要访问服务的实例
         List<Server> servers = getLoadBalancer().getAllServers();