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Copyright 2020 t-io
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
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package org.tio.http.server.mvc;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.TreeMap;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.tio.http.common.HttpRequest;
import org.tio.http.server.annotation.RequestPath;
import org.tio.http.server.mvc.intf.ControllerFactory;
import org.tio.utils.hutool.ArrayUtil;
import org.tio.utils.hutool.ClassScanAnnotationHandler;
import org.tio.utils.hutool.ClassUtil;
import org.tio.utils.hutool.FileUtil;
import org.tio.utils.hutool.StrUtil;
import org.tio.utils.json.Json;
import com.esotericsoftware.reflectasm.MethodAccess;
import com.thoughtworks.paranamer.BytecodeReadingParanamer;
import com.thoughtworks.paranamer.Paranamer;
/**
* @author tanyaowu
* 2017年7月1日 上午9:05:30
*/
public class Routes {
private static Logger log = LoggerFactory.getLogger(Routes.class);
/**
*
*/
public static final String META_PATH_KEY = "TIO_HTTP_META_PATH";
// private boolean writeMappingToFile = true;
/**
* 路径和对象映射
* key: /user
* value: object
*/
public final Map PATH_BEAN_MAP = new TreeMap<>();
/**
* class和对象映射
* key: XxxController.class
* value: XxxController.class对应的实例对象
*/
public static final Map, Object> CLASS_BEAN_MAP = new HashMap<>();
/**
* bean和MethodAccess映射
* key: XxxController.class对应的实例对象
* value: MethodAccess
*/
public static final Map BEAN_METHODACCESS_MAP = new HashMap<>();
/**
* 路径和class映射
* 只是用来打印的
* key: /user
* value: Class
*/
public final Map> PATH_CLASS_MAP = new TreeMap<>();
/**
* 路径和class映射
* key: class
* value: /user
*/
public static final Map, String> CLASS_PATH_MAP = new HashMap<>();
/**
* Method路径映射
* key: /user/update，包含forward的路径
* value: method
*/
public final Map PATH_METHOD_MAP = new TreeMap<>();
/**
* 方法参数名映射
* key: method
* value: ["id", "name", "scanPackages"]
*/
public final Map METHOD_PARAMNAME_MAP = new HashMap<>();
/**
* path跟forward映射
* key: 原访问路径
* value: forward后的路径
* 譬如：原来的访问路径是/user/123，forward是/user/getById，这个相当于是一个rewrite的功能，对外路径要相对友好，对内路径一般用于业务更便捷地处理
*/
public final Map PATH_FORWARD_MAP = new HashMap<>();
/**
* 方法和参数类型映射
* key: method
* value: [String.class, int.class]
*/
public final Map[]> METHOD_PARAMTYPE_MAP = new HashMap<>();
/**
* 方法和对象映射
* key: method
* value: bean
*/
public final Map METHOD_BEAN_MAP = new HashMap<>();
/**
* Method路径映射
* 只是用于打印日志
* key: /user/update
* value: method string
*/
public final Map PATH_METHODSTR_MAP = new TreeMap<>();
/**
* 含有路径变量的请求
* key: 子路径的个数（pathUnitCount），譬如/user/{userid}就是2
* value: VariablePathVo
*/
public final Map VARIABLE_PATH_MAP = new TreeMap<>();
/**
* 含有路径变量的请求
* 只是用于打印日志
* key: 配置的路径/user/{userid}
* value: method string
*/
public final Map VARIABLEPATH_METHODSTR_MAP = new TreeMap<>();
private final StringBuilder errorStr = new StringBuilder();
/**
*
* @param scanPackages
*/
public Routes(String[] scanPackages) {
this(scanPackages, null);
}
public Routes(String scanPackage) {
this(scanPackage, null);
}
public Routes(String[] scanPackages, ControllerFactory controllerFactory) {
addRoutes(scanPackages, controllerFactory);
}
public Routes(String scanPackage, ControllerFactory controllerFactory) {
this(new String[] { scanPackage }, controllerFactory);
}
//
public Routes(Class[] scanRootClasses) {
this(toPackages(scanRootClasses), null);
}
public Routes(Class scanRootClasse) {
this(scanRootClasse.getPackage().getName(), null);
}
public Routes(Class[] scanRootClasses, ControllerFactory controllerFactory) {
addRoutes(toPackages(scanRootClasses), controllerFactory);
}
public Routes(Class scanRootClasse, ControllerFactory controllerFactory) {
this(new String[] { scanRootClasse.getPackage().getName() }, controllerFactory);
}
public static String[] toPackages(Class[] scanRootClasses) {
String[] scanPackages = new String[scanRootClasses.length];
int i = 0;
for (Class clazz : scanRootClasses) {
scanPackages[i++] = clazz.getPackage().getName();
}
return scanPackages;
}
/**
* 添加路由
* @param scanPackages
* @author tanyaowu
*/
public void addRoutes(String[] scanPackages) {
addRoutes(scanPackages, null);
}
/**
* 添加路由
* @param scanPackages
* @param controllerFactory
* @author tanyaowu
*/
public void addRoutes(String[] scanPackages, ControllerFactory controllerFactory) {
if (controllerFactory == null) {
controllerFactory = DefaultControllerFactory.me;
}
ControllerFactory controllerFactory1 = controllerFactory;
if (scanPackages != null) {
for (String pkg : scanPackages) {
try {
ClassUtil.scanPackage(pkg, new ClassScanAnnotationHandler(RequestPath.class) {
@Override
public void handlerAnnotation(Class clazz) {
try {
Object bean = controllerFactory1.getInstance(clazz);//classWithAnnotation.newInstance();
RequestPath classMapping = clazz.getAnnotation(RequestPath.class);
String beanPath = classMapping.value();
Object obj = PATH_BEAN_MAP.get(beanPath);
if (obj != null) {
log.error("mapping[{}] already exists in class [{}]", beanPath, obj.getClass().getName());
errorStr.append("mapping[" + beanPath + "] already exists in class [" + obj.getClass().getName() + "]\r\n\r\n");
} else {
PATH_BEAN_MAP.put(beanPath, bean);
CLASS_BEAN_MAP.put(clazz, bean);
PATH_CLASS_MAP.put(beanPath, clazz);
CLASS_PATH_MAP.put(clazz, beanPath);
MethodAccess access = MethodAccess.get(clazz);
BEAN_METHODACCESS_MAP.put(bean, access);
}
Method[] methods = clazz.getDeclaredMethods();//ClassUtil.getPublicMethods(clazz);
c: for (Method method : methods) {
int modifiers = method.getModifiers();
if (!Modifier.isPublic(modifiers)) {
continue c;
}
RequestPath mapping = method.getAnnotation(RequestPath.class);
if (mapping == null) {
// log.error(method.getName());
continue c;
}
// String methodName = method.getName();
String methodPath = mapping.value();
// if (StrUtil.isBlank(beanPath)) {
// log.error("方法有注解，但类没注解, method:{}, class:{}", methodName, clazz);
// errorStr.append("方法有注解，但类没注解, method:" + methodName + ", class:" + clazz + "\r\n\r\n");
// continue c;
// }
String completePath = beanPath + methodPath;
Class[] parameterTypes = method.getParameterTypes();
try {
Paranamer paranamer = new BytecodeReadingParanamer();
String[] parameterNames = paranamer.lookupParameterNames(method, false); // will return null if not found
Method checkMethod = PATH_METHOD_MAP.get(completePath);
if (checkMethod != null) {
log.error("mapping[{}] already exists in method [{}]", completePath, checkMethod.getDeclaringClass() + "#" + checkMethod.getName());
errorStr.append("mapping[" + completePath + "] already exists in method [" + checkMethod.getDeclaringClass() + "#"
+ checkMethod.getName() + "]\r\n\r\n");
continue c;
}
PATH_METHOD_MAP.put(completePath, method);
String methodStr = methodToStr(method, parameterNames);
PATH_METHODSTR_MAP.put(completePath, methodStr);
METHOD_PARAMNAME_MAP.put(method, parameterNames);
METHOD_PARAMTYPE_MAP.put(method, parameterTypes);
if (StrUtil.isNotBlank(mapping.forward())) {
PATH_FORWARD_MAP.put(completePath, mapping.forward());
PATH_METHODSTR_MAP.put(mapping.forward(), methodStr);
PATH_METHOD_MAP.put(mapping.forward(), method);
}
METHOD_BEAN_MAP.put(method, bean);
} catch (Throwable e) {
log.error(e.toString(), e);
}
}
} catch (Throwable e) {
log.error(e.toString(), e);
}
}
});
} catch (Exception e) {
log.error(e.toString(), e);
}
}
String pathClassMapStr = Json.toFormatedJson(PATH_CLASS_MAP);
log.info("class mapping\r\n{}", pathClassMapStr);
String pathMethodstrMapStr = Json.toFormatedJson(PATH_METHODSTR_MAP);
log.info("method mapping\r\n{}", pathMethodstrMapStr);
processVariablePath();
String variablePathMethodstrMapStr = Json.toFormatedJson(VARIABLEPATH_METHODSTR_MAP);
log.info("variable path mapping\r\n{}", variablePathMethodstrMapStr);
String writeMappingToFile = System.getProperty("tio.mvc.route.writeMappingToFile", "true");
if ("true".equalsIgnoreCase(writeMappingToFile)) {
try {
FileUtil.writeString(pathClassMapStr, "/tio_mvc_path_class.json", "utf-8");
FileUtil.writeString(pathMethodstrMapStr, "/tio_mvc_path_method.json", "utf-8");
FileUtil.writeString(variablePathMethodstrMapStr, "/tio_mvc_variablepath_method.json", "utf-8");
if (errorStr.length() > 0) {
FileUtil.writeString(errorStr.toString(), "/tio_error_mvc.txt", "utf-8");
}
} catch (Exception e) {
// log.error(e.toString(), e);
}
}
}
}
/**
* 处理有变量的路径
* @param PATH_METHOD_MAP
*/
private void processVariablePath() {
Set> set = PATH_METHOD_MAP.entrySet();
// Set forRemoved = new HashSet<>();
for (Entry entry : set) {
String path = entry.getKey();
Method method = entry.getValue();
if (StrUtil.contains(path, '{') && StrUtil.contains(path, '}')) {
String[] pathUnits = StrUtil.split(path, "/");
PathUnitVo[] pathUnitVos = new PathUnitVo[pathUnits.length];
boolean isVarPath = false; //是否是带变量的路径
for (int i = 0; i < pathUnits.length; i++) {
PathUnitVo pathUnitVo = new PathUnitVo();
String pathUnit = pathUnits[i];
if (StrUtil.contains(pathUnit, '{') || StrUtil.contains(pathUnit, '}')) {
if (StrUtil.startWith(pathUnit, "{") && StrUtil.endWith(pathUnit, "}")) {
String[] xx = METHOD_PARAMNAME_MAP.get(method);
String varName = StrUtil.subBetween(pathUnit, "{", "}");
if (ArrayUtil.contains(xx, varName)) {
isVarPath = true;
pathUnitVo.setVar(true);
pathUnitVo.setPath(varName);
} else {
log.error("path:{}, 对应的方法中并没有包含参数名为{}的参数", path, varName);
errorStr.append("path:{" + path + "}, 对应的方法中并没有包含参数名为" + varName + "的参数\r\n\r\n");
}
} else {
pathUnitVo.setVar(false);
pathUnitVo.setPath(pathUnit);
}
} else {
pathUnitVo.setVar(false);
pathUnitVo.setPath(pathUnit);
}
pathUnitVos[i] = pathUnitVo;
}
if (isVarPath) {
VariablePathVo variablePathVo = new VariablePathVo(path, method, pathUnitVos);
addVariablePathVo(pathUnits.length, variablePathVo);
}
}
}
// set.removeAll(forRemoved);
}
/**
*
* @param pathUnitCount
* @param forceCreate
* @return
*/
@SuppressWarnings("unused")
private VariablePathVo[] getVariablePathVos(Integer pathUnitCount, boolean forceCreate) {
VariablePathVo[] ret = VARIABLE_PATH_MAP.get(pathUnitCount);
if (forceCreate && ret == null) {
ret = new VariablePathVo[0];
VARIABLE_PATH_MAP.put(pathUnitCount, ret);
}
return ret;
}
/**
* 根据class获取class对应的bean
* @param
* @param clazz
* @return
*/
@SuppressWarnings("unchecked")
public static T getController(Class clazz) {
return (T) CLASS_BEAN_MAP.get(clazz);
}
public static String getRequestPath(Class clazz) {
return CLASS_PATH_MAP.get(clazz);
}
/**
*
* @param pathUnitCount
* @param variablePathVo
*/
private void addVariablePathVo(Integer pathUnitCount, VariablePathVo variablePathVo) {
VariablePathVo[] existValue = VARIABLE_PATH_MAP.get(pathUnitCount);
if (existValue == null) {
existValue = new VariablePathVo[] { variablePathVo };
VARIABLE_PATH_MAP.put(pathUnitCount, existValue);
} else {
VariablePathVo[] newExistValue = new VariablePathVo[existValue.length + 1];
System.arraycopy(existValue, 0, newExistValue, 0, existValue.length);
newExistValue[newExistValue.length - 1] = variablePathVo;
VARIABLE_PATH_MAP.put(pathUnitCount, newExistValue);
}
VARIABLEPATH_METHODSTR_MAP.put(variablePathVo.getPath(), methodToStr(variablePathVo.getMethod(), METHOD_PARAMNAME_MAP.get(variablePathVo.getMethod())));
//org.tio.http.server.mvc.Routes.METHOD_PARAMNAME_MAP
}
private String methodToStr(Method method, String[] parameterNames) {
return method.getDeclaringClass().getName() + "." + method.getName() + "(" + ArrayUtil.join(parameterNames, ",") + ")";
// matchingClass.getName() + "." + method.getName() + "(" + ArrayUtil.join(parameterNames, ",") + ")"
}
@SuppressWarnings("unused")
public Method getMethodByPath(String path, HttpRequest request) {
Method method = PATH_METHOD_MAP.get(path);
if (method == null) {
String[] pathUnitsOfRequest = StrUtil.split(path, "/"); // "/user/214" -- > ["user", "214"]
VariablePathVo[] variablePathVos = VARIABLE_PATH_MAP.get(pathUnitsOfRequest.length);
if (variablePathVos != null) {
tag1: for (VariablePathVo variablePathVo : variablePathVos) {
PathUnitVo[] pathUnitVos = variablePathVo.getPathUnits();
tag2: for (int i = 0; i < pathUnitVos.length; i++) {
PathUnitVo pathUnitVo = pathUnitVos[i];
String pathUnitOfRequest = pathUnitsOfRequest[i];
if (pathUnitVo.isVar()) {
request.addParam(pathUnitVo.getPath(), pathUnitOfRequest);
} else {
if (!StrUtil.equals(pathUnitVo.getPath(), pathUnitOfRequest)) {
continue tag1;
}
}
}
String metapath = variablePathVo.getPath();
String forward = PATH_FORWARD_MAP.get(metapath);
if (StrUtil.isNotBlank(forward)) {
request.requestLine.path = forward;
}
method = variablePathVo.getMethod();
return method;
}
}
return null;
} else {
return method;
}
}
}
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