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/*
* Copyright 1999-2011 Alibaba Group.
*
* 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
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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.alibaba.dubbo.config;
import java.io.Serializable;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.HashMap;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import com.alibaba.dubbo.common.Constants;
import com.alibaba.dubbo.common.URL;
import com.alibaba.dubbo.common.extension.ExtensionLoader;
import com.alibaba.dubbo.common.logger.Logger;
import com.alibaba.dubbo.common.logger.LoggerFactory;
import com.alibaba.dubbo.common.utils.CollectionUtils;
import com.alibaba.dubbo.common.utils.ConfigUtils;
import com.alibaba.dubbo.common.utils.ReflectUtils;
import com.alibaba.dubbo.common.utils.StringUtils;
import com.alibaba.dubbo.config.support.Parameter;
/**
* 配置解析的工具方法、公共方法
*
* @author william.liangf
* @export
*/
public abstract class AbstractConfig implements Serializable {
private static final long serialVersionUID = 4267533505537413570L;
protected static final Logger logger = LoggerFactory.getLogger(AbstractConfig.class);
private static final int MAX_LENGTH = 100;
private static final int MAX_PATH_LENGTH = 200;
private static final Pattern PATTERN_NAME = Pattern.compile("[\\-._0-9a-zA-Z]+");
private static final Pattern PATTERN_MULTI_NAME = Pattern.compile("[,\\-._0-9a-zA-Z]+");
private static final Pattern PATTERN_METHOD_NAME = Pattern.compile("[a-zA-Z][0-9a-zA-Z]*");
private static final Pattern PATTERN_PATH = Pattern.compile("[/\\-$._0-9a-zA-Z]+");
private static final Pattern PATTERN_NAME_HAS_SYMBOL = Pattern.compile("[:*,/\\-._0-9a-zA-Z]+");
private static final Pattern PATTERN_KEY = Pattern.compile("[*,\\-._0-9a-zA-Z]+");
protected String id;
@Parameter(excluded = true)
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
private static final Map legacyProperties = new HashMap();
static {
legacyProperties.put("dubbo.protocol.name", "dubbo.service.protocol");
legacyProperties.put("dubbo.protocol.host", "dubbo.service.server.host");
legacyProperties.put("dubbo.protocol.port", "dubbo.service.server.port");
legacyProperties.put("dubbo.protocol.threads", "dubbo.service.max.thread.pool.size");
legacyProperties.put("dubbo.consumer.timeout", "dubbo.service.invoke.timeout");
legacyProperties.put("dubbo.consumer.retries", "dubbo.service.max.retry.providers");
legacyProperties.put("dubbo.consumer.check", "dubbo.service.allow.no.provider");
legacyProperties.put("dubbo.service.url", "dubbo.service.address");
}
private static String convertLegacyValue(String key, String value) {
if (value != null && value.length() > 0) {
if ("dubbo.service.max.retry.providers".equals(key)) {
return String.valueOf(Integer.parseInt(value) - 1);
} else if ("dubbo.service.allow.no.provider".equals(key)) {
return String.valueOf(! Boolean.parseBoolean(value));
}
}
return value;
}
protected void appendAnnotation(Class annotationClass, Object annotation) {
Method[] methods = annotationClass.getMethods();
for (Method method : methods) {
if (method.getDeclaringClass() != Object.class
&& method.getReturnType() != void.class
&& method.getParameterTypes().length == 0
&& Modifier.isPublic(method.getModifiers())
&& ! Modifier.isStatic(method.getModifiers())) {
try {
String property = method.getName();
if ("interfaceClass".equals(property) || "interfaceName".equals(property)) {
property = "interface";
}
String setter = "set" + property.substring(0, 1).toUpperCase() + property.substring(1);
Object value = method.invoke(annotation, new Object[0]);
if (value != null && ! value.equals(method.getDefaultValue())) {
Class parameterType = ReflectUtils.getBoxedClass(method.getReturnType());
if ("filter".equals(property) || "listener".equals(property)) {
parameterType = String.class;
value = StringUtils.join((String[]) value, ",");
} else if ("parameters".equals(property)) {
parameterType = Map.class;
value = CollectionUtils.toStringMap((String[]) value);
}
try {
Method setterMethod = getClass().getMethod(setter, new Class[] { parameterType });
setterMethod.invoke(this, new Object[] { value });
} catch (NoSuchMethodException e) {
// ignore
}
}
} catch (Throwable e) {
logger.error(e.getMessage(), e);
}
}
}
}
protected static void appendProperties(AbstractConfig config) {
if (config == null) {
return;
}
String prefix = "dubbo." + getTagName(config.getClass()) + ".";
Method[] methods = config.getClass().getMethods();
for (Method method : methods) {
try {
String name = method.getName();
if (name.length() > 3 && name.startsWith("set") && Modifier.isPublic(method.getModifiers())
&& method.getParameterTypes().length == 1 && isPrimitive(method.getParameterTypes()[0])) {
String property = StringUtils.camelToSplitName(name.substring(3, 4).toLowerCase() + name.substring(4), "-");
String value = null;
if (config.getId() != null && config.getId().length() > 0) {
String pn = prefix + config.getId() + "." + property;
value = System.getProperty(pn);
if(! StringUtils.isBlank(value)) {
logger.info("Use System Property " + pn + " to config dubbo");
}
}
if (value == null || value.length() == 0) {
String pn = prefix + property;
value = System.getProperty(pn);
if(! StringUtils.isBlank(value)) {
logger.info("Use System Property " + pn + " to config dubbo");
}
}
if (value == null || value.length() == 0) {
Method getter;
try {
getter = config.getClass().getMethod("get" + name.substring(3), new Class[0]);
} catch (NoSuchMethodException e) {
try {
getter = config.getClass().getMethod("is" + name.substring(3), new Class[0]);
} catch (NoSuchMethodException e2) {
getter = null;
}
}
if (getter != null) {
if (getter.invoke(config, new Object[0]) == null) {
if (config.getId() != null && config.getId().length() > 0) {
value = ConfigUtils.getProperty(prefix + config.getId() + "." + property);
}
if (value == null || value.length() == 0) {
value = ConfigUtils.getProperty(prefix + property);
}
if (value == null || value.length() == 0) {
String legacyKey = legacyProperties.get(prefix + property);
if (legacyKey != null && legacyKey.length() > 0) {
value = convertLegacyValue(legacyKey, ConfigUtils.getProperty(legacyKey));
}
}
}
}
}
if (value != null && value.length() > 0) {
method.invoke(config, new Object[] {convertPrimitive(method.getParameterTypes()[0], value)});
}
}
} catch (Exception e) {
logger.error(e.getMessage(), e);
}
}
}
private static String getTagName(Class cls) {
String tag = cls.getSimpleName();
for (String suffix : SUFFIXS) {
if (tag.endsWith(suffix)) {
tag = tag.substring(0, tag.length() - suffix.length());
break;
}
}
tag = tag.toLowerCase();
return tag;
}
protected static void appendParameters(Map parameters, Object config) {
appendParameters(parameters, config, null);
}
@SuppressWarnings("unchecked")
protected static void appendParameters(Map parameters, Object config, String prefix) {
if (config == null) {
return;
}
Method[] methods = config.getClass().getMethods();
for (Method method : methods) {
try {
String name = method.getName();
if ((name.startsWith("get") || name.startsWith("is"))
&& ! "getClass".equals(name)
&& Modifier.isPublic(method.getModifiers())
&& method.getParameterTypes().length == 0
&& isPrimitive(method.getReturnType())) {
Parameter parameter = method.getAnnotation(Parameter.class);
if (method.getReturnType() == Object.class || parameter != null && parameter.excluded()) {
continue;
}
int i = name.startsWith("get") ? 3 : 2;
String prop = StringUtils.camelToSplitName(name.substring(i, i + 1).toLowerCase() + name.substring(i + 1), ".");
String key;
if (parameter != null && parameter.key() != null && parameter.key().length() > 0) {
key = parameter.key();
} else {
key = prop;
}
Object value = method.invoke(config, new Object[0]);
String str = String.valueOf(value).trim();
if (value != null && str.length() > 0) {
if (parameter != null && parameter.escaped()) {
str = URL.encode(str);
}
if (parameter != null && parameter.append()) {
String pre = (String)parameters.get(Constants.DEFAULT_KEY + "." + key);
if (pre != null && pre.length() > 0) {
str = pre + "," + str;
}
pre = (String)parameters.get(key);
if (pre != null && pre.length() > 0) {
str = pre + "," + str;
}
}
if (prefix != null && prefix.length() > 0) {
key = prefix + "." + key;
}
parameters.put(key, str);
} else if (parameter != null && parameter.required()) {
throw new IllegalStateException(config.getClass().getSimpleName() + "." + key + " == null");
}
} else if ("getParameters".equals(name)
&& Modifier.isPublic(method.getModifiers())
&& method.getParameterTypes().length == 0
&& method.getReturnType() == Map.class) {
Map map = (Map) method.invoke(config, new Object[0]);
if (map != null && map.size() > 0) {
String pre = (prefix != null && prefix.length() > 0 ? prefix + "." : "");
for (Map.Entry entry : map.entrySet()) {
parameters.put(pre + entry.getKey().replace('-', '.'), entry.getValue());
}
}
}
} catch (Exception e) {
throw new IllegalStateException(e.getMessage(), e);
}
}
}
protected static void appendAttributes(Map parameters, Object config) {
appendAttributes(parameters, config, null);
}
protected static void appendAttributes(Map parameters, Object config, String prefix) {
if (config == null) {
return;
}
Method[] methods = config.getClass().getMethods();
for (Method method : methods) {
try {
String name = method.getName();
if ((name.startsWith("get") || name.startsWith("is"))
&& ! "getClass".equals(name)
&& Modifier.isPublic(method.getModifiers())
&& method.getParameterTypes().length == 0
&& isPrimitive(method.getReturnType())) {
Parameter parameter = method.getAnnotation(Parameter.class);
if (parameter == null || !parameter.attribute())
continue;
String key;
if (parameter != null && parameter.key() != null && parameter.key().length() > 0) {
key = parameter.key();
} else {
int i = name.startsWith("get") ? 3 : 2;
key = name.substring(i, i + 1).toLowerCase() + name.substring(i + 1);
}
Object value = method.invoke(config, new Object[0]);
if (value != null) {
if (prefix != null && prefix.length() > 0) {
key = prefix + "." + key;
}
parameters.put(key, value);
}
}
} catch (Exception e) {
throw new IllegalStateException(e.getMessage(), e);
}
}
}
private static boolean isPrimitive(Class type) {
return type.isPrimitive()
|| type == String.class
|| type == Character.class
|| type == Boolean.class
|| type == Byte.class
|| type == Short.class
|| type == Integer.class
|| type == Long.class
|| type == Float.class
|| type == Double.class
|| type == Object.class;
}
private static Object convertPrimitive(Class type, String value) {
if (type == char.class || type == Character.class) {
return value.length() > 0 ? value.charAt(0) : '\0';
} else if (type == boolean.class || type == Boolean.class) {
return Boolean.valueOf(value);
} else if (type == byte.class || type == Byte.class) {
return Byte.valueOf(value);
} else if (type == short.class || type == Short.class) {
return Short.valueOf(value);
} else if (type == int.class || type == Integer.class) {
return Integer.valueOf(value);
} else if (type == long.class || type == Long.class) {
return Long.valueOf(value);
} else if (type == float.class || type == Float.class) {
return Float.valueOf(value);
} else if (type == double.class || type == Double.class) {
return Double.valueOf(value);
}
return value;
}
protected static void checkExtension(Class type, String property, String value) {
checkName(property, value);
if (value != null && value.length() > 0
&& ! ExtensionLoader.getExtensionLoader(type).hasExtension(value)) {
throw new IllegalStateException("No such extension " + value + " for " + property + "/" + type.getName());
}
}
protected static void checkMultiExtension(Class type, String property, String value) {
checkMultiName(property, value);
if (value != null && value.length() > 0) {
String[] values = value.split("\\s*[,]+\\s*");
for (String v : values) {
if (v.startsWith(Constants.REMOVE_VALUE_PREFIX)) {
v = v.substring(1);
}
if (Constants.DEFAULT_KEY.equals(v)) {
continue;
}
if (! ExtensionLoader.getExtensionLoader(type).hasExtension(v)) {
throw new IllegalStateException("No such extension " + v + " for " + property + "/" + type.getName());
}
}
}
}
protected static void checkLength(String property, String value) {
checkProperty(property, value, MAX_LENGTH, null);
}
protected static void checkPathLength(String property, String value) {
checkProperty(property, value, MAX_PATH_LENGTH, null);
}
protected static void checkName(String property, String value) {
checkProperty(property, value, MAX_LENGTH, PATTERN_NAME);
}
protected static void checkNameHasSymbol(String property, String value) {
checkProperty(property, value, MAX_LENGTH, PATTERN_NAME_HAS_SYMBOL);
}
protected static void checkKey(String property, String value) {
checkProperty(property, value, MAX_LENGTH, PATTERN_KEY);
}
protected static void checkMultiName(String property, String value) {
checkProperty(property, value, MAX_LENGTH, PATTERN_MULTI_NAME);
}
protected static void checkPathName(String property, String value) {
checkProperty(property, value, MAX_PATH_LENGTH, PATTERN_PATH);
}
protected static void checkMethodName(String property, String value) {
checkProperty(property, value, MAX_LENGTH, PATTERN_METHOD_NAME);
}
protected static void checkParameterName(Map parameters) {
if (parameters == null || parameters.size() == 0) {
return;
}
for (Map.Entry entry : parameters.entrySet()) {
//change by tony.chenl parameter value maybe has colon.for example napoli address
checkNameHasSymbol(entry.getKey(), entry.getValue());
}
}
protected static void checkProperty(String property, String value, int maxlength, Pattern pattern) {
if (value == null || value.length() == 0) {
return;
}
if(value.length() > maxlength){
throw new IllegalStateException("Invalid " + property + "=\"" + value + "\" is longer than " + maxlength);
}
if (pattern != null) {
Matcher matcher = pattern.matcher(value);
if(! matcher.matches()) {
throw new IllegalStateException("Invalid " + property + "=\"" + value + "\" contain illegal charactor, only digit, letter, '-', '_' and '.' is legal.");
}
}
}
static {
Runtime.getRuntime().addShutdownHook(new Thread(new Runnable() {
public void run() {
if (logger.isInfoEnabled()) {
logger.info("Run shutdown hook now.");
}
ProtocolConfig.destroyAll();
}
}, "DubboShutdownHook"));
}
private static final String[] SUFFIXS = new String[] {"Config", "Bean"};
@Override
public String toString() {
try {
StringBuilder buf = new StringBuilder();
buf.append("");
return buf.toString();
} catch (Throwable t) { // 防御性容错
logger.warn(t.getMessage(), t);
return super.toString();
}
}
}