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/*
* Copyright (c) 2016 Cisco and/or its affiliates.
*
* 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.fd.honeycomb.infra.distro.schema;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.LinkedListMultimap;
import com.google.common.collect.Multimap;
import java.util.Arrays;
import java.util.Set;
import java.util.stream.Stream;
import javax.annotation.Nonnull;
/**
* Index from guice module to yang module providers
*/
class YangModuleMappingIndex implements ResourceLoader {
private static final String G_MODULE_TOKEN = "GUICE_MODULE:";
private static final String KEY_VALUE_SEPARATOR = "|";
private static final String Y_MODULE_TOKEN = "YANG_MODULES:";
private static final String Y_MODULE_SEPARATOR = ",";
/**
* key - module class name
* value - yang module provider
*/
private final Multimap<String, String> index;
YangModuleMappingIndex(final String indexPath) {
this.index = LinkedListMultimap.create();
loadResourceContentsOnPath(indexPath)
.forEach(line -> {
final String moduleName = parseModuleName(line);
parseYangModules(line).forEach(yModuleProvider -> index.put(moduleName, yModuleProvider));
});
}
Set<String> getByModuleName(@Nonnull final String moduleName) {
return ImmutableSet.copyOf(index.get(moduleName));
}
int applicationModulesCount() {
return index.keySet().size();
}
private static String parseModuleName(final String rawLine) {
return rawLine.substring(rawLine.indexOf(G_MODULE_TOKEN) + G_MODULE_TOKEN.length(),
rawLine.indexOf(KEY_VALUE_SEPARATOR));
}
private static Stream<String> parseYangModules(final String rawLine) {
return Arrays.stream(rawLine.substring(rawLine.indexOf(Y_MODULE_TOKEN) + Y_MODULE_TOKEN.length())
.split(Y_MODULE_SEPARATOR));
}
}
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