/*
* Copyright (c) 2002-2012 Alibaba Group Holding Limited.
* All rights reserved.
*
* 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.citrus.turbine.pipeline.condition;
import static com.alibaba.citrus.springext.util.SpringExtUtil.*;
import static com.alibaba.citrus.util.ObjectUtil.*;
import static com.alibaba.citrus.util.StringUtil.*;
import static com.alibaba.citrus.util.regex.MatchResultSubstitution.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import com.alibaba.citrus.service.pipeline.PipelineStates;
import com.alibaba.citrus.service.pipeline.support.AbstractConditionDefinitionParser;
import com.alibaba.citrus.util.FileUtil;
import com.alibaba.citrus.util.ServletUtil;
import com.alibaba.citrus.util.StringUtil;
import com.alibaba.citrus.util.regex.MatchResultSubstitution;
import com.alibaba.citrus.util.regex.Substitution;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.xml.ParserContext;
import org.w3c.dom.Element;
/**
* 根据servletPath + componentPath + pathInfo来判断。
*
* @author Michael Zhou
*/
public class PathCondition extends AbstractTurbineCondition {
public final static String DEFAULT_VAR = "subst";
private Pattern[] patterns;
private boolean[] negativePatterns;
private String[] patternStrings;
private String var;
public void setName(String patterns) {
if (patterns != null) {
this.patternStrings = StringUtil.split(patterns, ", ");
this.patterns = new Pattern[patternStrings.length];
this.negativePatterns = new boolean[patternStrings.length];
for (int i = 0; i < patternStrings.length; i++) {
compilePattern(patternStrings[i], i);
}
}
}
private void compilePattern(String patternString, int index) {
if (patternString.startsWith("!")) {
this.negativePatterns[index] = true;
patternString = patternString.substring(1);
}
this.patterns[index] = Pattern.compile(patternString);
}
public void setVar(String var) {
this.var = trimToNull(var);
}
public final boolean isSatisfied(PipelineStates states) {
String path = FileUtil.normalizeAbsolutePath(getPath());
for (int i = 0; i < patterns.length; i++) {
Matcher matcher = patterns[i].matcher(path);
boolean matched = matcher.find();
boolean negative = negativePatterns[i];
if (negative != matched) {
log(patternStrings[i]);
String var = defaultIfNull(this.var, DEFAULT_VAR);
Substitution subst = new MatchResultSubstitution(negative ? EMPTY_MATCH_RESULT : matcher);
states.setAttribute(var, subst);
return true;
}
}
return false;
}
protected String getPath() {
return ServletUtil.getResourcePath(getRunData().getRequest());
}
protected void log(String patternString) {
log.debug("URL path(servletPath/pathInfo) matched pattern: {}", patternString);
}
public static class DefinitionParser extends AbstractPathConditionDefinitionParser<PathCondition> {
}
protected static abstract class AbstractPathConditionDefinitionParser<T extends PathCondition>
extends AbstractConditionDefinitionParser<T> {
@Override
protected void doParse(Element element, ParserContext parserContext, BeanDefinitionBuilder builder) {
attributesToProperties(element, builder, "name", "var");
}
}
}