/*
* Copyright 2012-2017 the original author or authors.
*
* 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 org.springframework.boot.web.embedded.tomcat;
import java.util.Set;
import org.apache.tomcat.JarScanner;
import org.apache.tomcat.util.scan.StandardJarScanFilter;
import org.apache.tomcat.util.scan.StandardJarScanner;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
/**
* {@link JarScanner} decorator allowing alternative default jar pattern matching. This
* class extends {@link StandardJarScanner} rather than implementing the
* {@link JarScanner} due to API changes introduced in Tomcat 8.
*
* @author Phillip Webb
* @author Stephane Nicoll
* @see #apply(TomcatEmbeddedContext, Set)
*/
class SkipPatternJarScanner extends StandardJarScanner {
private final JarScanner jarScanner;
SkipPatternJarScanner(JarScanner jarScanner, Set<String> patterns) {
Assert.notNull(jarScanner, "JarScanner must not be null");
Assert.notNull(patterns, "Patterns must not be null");
this.jarScanner = jarScanner;
StandardJarScanFilter filter = new StandardJarScanFilter();
filter.setTldSkip(StringUtils.collectionToCommaDelimitedString(patterns));
this.jarScanner.setJarScanFilter(filter);
}
/**
* Apply this decorator the specified context.
* @param context the context to apply to
* @param patterns the jar skip patterns or {@code null} for defaults
*/
static void apply(TomcatEmbeddedContext context, Set<String> patterns) {
SkipPatternJarScanner scanner = new SkipPatternJarScanner(context.getJarScanner(),
patterns);
context.setJarScanner(scanner);
}
}