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DependencyManagerUtils.groovy
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DependencyManagerUtils.groovy
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/*
* Copyright 2013 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.grails.dependency.resolution
import groovy.transform.CompileStatic
import groovy.util.slurpersupport.GPathResult
import java.util.concurrent.ConcurrentHashMap
import javax.xml.parsers.ParserConfigurationException
import org.xml.sax.ErrorHandler
import org.xml.sax.SAXException
import org.xml.sax.SAXParseException
import org.grails.io.support.SpringIOUtils
/**
* Abstract implementation of DependencyManager interface
*
* @author Graeme Rocher
* @since 2.3
*/
@CompileStatic
abstract class DependencyManagerUtils {
private static Map<File,GPathResult> parsedXmlCache = new ConcurrentHashMap<File, GPathResult>()
static GPathResult downloadPluginList(File localFile) {
GPathResult parsedXml = parsedXmlCache[localFile]
if (!parsedXml) {
try {
URL url = new URL(DependencyManager.GRAILS_CENTRAL_PLUGIN_LIST)
if (localFile.lastModified() < url.openConnection().lastModified ) {
localFile.withOutputStream { OutputStream os ->
url.withInputStream { InputStream is ->
os << is
}
}
}
def xmlSlurper = SpringIOUtils.createXmlSlurper()
xmlSlurper.setErrorHandler(new ErrorHandler() {
void warning(SAXParseException e) { /*noop*/ }
void error(SAXParseException e) { /*noop*/ }
void fatalError(SAXParseException e) { /*noop*/ }
})
parsedXml = xmlSlurper.parse(localFile)
parsedXmlCache.put(localFile, parsedXml)
}
catch (IOException e) {
// ignore
}
catch (SAXException e) {
// ignore
}
catch (ParserConfigurationException e) {
// ignore
}
}
return parsedXml
}
}