/*
* JBoss, Home of Professional Open Source.
* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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 io.undertow.predicate;
import java.util.
HashMap;
import java.util.
HashSet;
import java.util.
Map;
import java.util.
Set;
import java.util.
TreeMap;
import io.undertow.attribute.
ExchangeAttribute;
import io.undertow.attribute.
ExchangeAttributes;
import io.undertow.server.
HttpServerExchange;
import io.undertow.util.
PathTemplate;
/**
* @author Stuart Douglas
*/
public class
PathTemplatePredicate implements
Predicate {
private final
ExchangeAttribute attribute;
private final
PathTemplate value;
public
PathTemplatePredicate(final
String template, final
ExchangeAttribute attribute) {
this.
attribute =
attribute;
this.
value =
PathTemplate.
create(
template);
}
@
Override
public boolean
resolve(final
HttpServerExchange exchange) {
final
Map<
String,
String>
params = new
HashMap<>();
String path =
attribute.
readAttribute(
exchange);
if(
path == null) {
return false;
}
boolean
result = this.
value.
matches(
path,
params);
if (
result) {
Map<
String,
Object>
context =
exchange.
getAttachment(
PREDICATE_CONTEXT);
if(
context == null) {
exchange.
putAttachment(
PREDICATE_CONTEXT,
context = new
TreeMap<>());
}
context.
putAll(
params);
}
return
result;
}
public static class
Builder implements
PredicateBuilder {
@
Override
public
String name() {
return "path-template";
}
@
Override
public
Map<
String,
Class<?>>
parameters() {
final
Map<
String,
Class<?>>
params = new
HashMap<>();
params.
put("value",
String.class);
params.
put("match",
ExchangeAttribute.class);
return
params;
}
@
Override
public
Set<
String>
requiredParameters() {
final
Set<
String>
params = new
HashSet<>();
params.
add("value");
return
params;
}
@
Override
public
String defaultParameter() {
return "value";
}
@
Override
public
Predicate build(final
Map<
String,
Object>
config) {
ExchangeAttribute match = (
ExchangeAttribute)
config.
get("match");
if (
match == null) {
match =
ExchangeAttributes.
relativePath();
}
String value = (
String)
config.
get("value");
return new
PathTemplatePredicate(
value,
match);
}
}
}