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/**
* ============LICENSE_START=======================================================
* Gizmo
* ================================================================================
* Copyright © 2017 AT&T Intellectual Property.
* Copyright © 2017 Amdocs
* All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*
* ECOMP is a trademark and service mark of AT&T Intellectual Property.
*/
package org.onap.aai.spike.schema;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
import com.google.common.collect.Multimap;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import org.codehaus.jackson.map.ObjectMapper;
import org.onap.aai.edges.EdgeRule;
import org.onap.aai.spike.exception.SpikeException;
public class RelationshipSchema {
private static final Gson gson = new GsonBuilder().create();
public static final String SCHEMA_SOURCE_NODE_TYPE = "from";
public static final String SCHEMA_TARGET_NODE_TYPE = "to";
public static final String SCHEMA_RELATIONSHIP_TYPE = "label";
public static final String SCHEMA_RULES_ARRAY = "rules";
private Map<String, Map<String, Class<?>>> relations = new HashMap<>();
/**
* Hashmap of valid relationship types along with properties.
*/
private Map<String, Map<String, Class<?>>> relationTypes = new HashMap<>();
public RelationshipSchema(Multimap<String, EdgeRule> rules, String props) throws SpikeException, IOException {
HashMap<String, String> properties = new ObjectMapper().readValue(props, HashMap.class);
Map<String, Class<?>> edgeProps =
properties.entrySet().stream().collect(Collectors.toMap(p -> p.getKey(), p -> {
try {
return resolveClass(p.getValue());
} catch (SpikeException | ClassNotFoundException e) {
e.printStackTrace();
}
return null;
}));
rules.entries().forEach((kv) -> {
relationTypes.put(kv.getValue().getLabel(), edgeProps);
relations.put(buildRelation(kv.getValue().getFrom(), kv.getValue().getTo(), kv.getValue().getLabel()),
edgeProps);
});
}
public RelationshipSchema(List<String> jsonStrings) throws SpikeException, IOException {
String edgeRules = jsonStrings.get(0);
String props = jsonStrings.get(1);
HashMap<String, ArrayList<LinkedHashMap<String, String>>> rules =
new ObjectMapper().readValue(edgeRules, HashMap.class);
HashMap<String, String> properties = new ObjectMapper().readValue(props, HashMap.class);
Map<String, Class<?>> edgeProps =
properties.entrySet().stream().collect(Collectors.toMap(p -> p.getKey(), p -> {
try {
return resolveClass(p.getValue());
} catch (SpikeException | ClassNotFoundException e) {
e.printStackTrace();
}
return null;
}));
rules.get(SCHEMA_RULES_ARRAY).forEach(l -> {
relationTypes.put(l.get(SCHEMA_RELATIONSHIP_TYPE), edgeProps);
relations.put(buildRelation(l.get(SCHEMA_SOURCE_NODE_TYPE), l.get(SCHEMA_TARGET_NODE_TYPE),
l.get(SCHEMA_RELATIONSHIP_TYPE)), edgeProps);
});
}
public Map<String, Class<?>> lookupRelation(String key) {
return this.relations.get(key);
}
public Map<String, Class<?>> lookupRelationType(String type) {
return this.relationTypes.get(type);
}
public boolean isValidType(String type) {
return relationTypes.containsKey(type);
}
private String buildRelation(String source, String target, String relation) {
return source + ":" + target + ":" + relation;
}
private Class<?> resolveClass(String type) throws SpikeException, ClassNotFoundException {
Class<?> clazz = Class.forName(type);
validateClassTypes(clazz);
return clazz;
}
private void validateClassTypes(Class<?> clazz) throws SpikeException {
if (!clazz.isAssignableFrom(Integer.class) && !clazz.isAssignableFrom(Double.class)
&& !clazz.isAssignableFrom(Boolean.class) && !clazz.isAssignableFrom(String.class)) {
throw new SpikeException("BAD_REQUEST");
}
}
}
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