io.micronaut.cli.profile.commands.factory.ClasspathCommandResourceResolver.groovy Maven / Gradle / Ivy
/*
* Copyright 2017-2019 original 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 io.micronaut.cli.profile.commands.factory
import groovy.transform.CompileStatic
import io.micronaut.cli.io.support.PathMatchingResourcePatternResolver
import io.micronaut.cli.io.support.Resource
import io.micronaut.cli.profile.Profile
/**
* A {@link CommandResourceResolver} that resolves commands from the classpath under the directory META-INF/commands
*
* @author Graeme Rocher
* @since 1.0
*/
@CompileStatic
class ClasspathCommandResourceResolver implements CommandResourceResolver {
final Collection matchingFileExtensions
ClassLoader classLoader
private Collection resources = null
ClasspathCommandResourceResolver(Collection matchingFileExtensions) {
this.matchingFileExtensions = matchingFileExtensions
}
@Override
Collection findCommandResources(Profile profile) {
if (resources != null) return resources
def classLoader = classLoader ?: Thread.currentThread().contextClassLoader
PathMatchingResourcePatternResolver resourcePatternResolver = new PathMatchingResourcePatternResolver(classLoader)
try {
resources = []
for (String ext in matchingFileExtensions) {
resources.addAll resourcePatternResolver.getResources("classpath*:META-INF/commands/*.$ext").toList()
}
return resources
} catch (Throwable e) {
return []
}
}
}