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/**
* ============LICENSE_START=======================================================
* org.onap.aai
* ================================================================================
* Copyright © 2017-18 AT&T Intellectual Property. 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=========================================================
*/
package org.onap.aai.edges;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import com.jayway.jsonpath.DocumentContext;
import com.jayway.jsonpath.JsonPath;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import org.onap.aai.setup.SchemaVersion;
/**
* JsonIngestor produces DocumentContexts from json files
*/
public class JsonIngestor {
private static final EELFLogger LOGGER = EELFManager.getInstance().getLogger(JsonIngestor.class);
/**
* Reads in given json files to queryable DocumentContexts.
*
* @param filesToIngest - map of filenames to ingest
* per Version
* @return Map<SchemaVersion, List<DocumentContext>> - map of DocumentContexts per Version
*/
public Map<SchemaVersion, List<DocumentContext>> ingest(Map<SchemaVersion, List<String>> filesToIngest) {
Map<SchemaVersion, List<DocumentContext>> result = new HashMap<>();
for (Entry<SchemaVersion, List<String>> verFiles : filesToIngest.entrySet()) {
SchemaVersion v = verFiles.getKey();
List<String> files = verFiles.getValue();
List<DocumentContext> docs = new ArrayList<>();
for (String rulesFilename : files) {
String fileContents = readInJsonFile(rulesFilename);
docs.add(JsonPath.parse(fileContents));
}
result.put(v, docs);
}
return result;
}
public Map<SchemaVersion, List<DocumentContext>> ingestContent(Map<SchemaVersion, List<String>> filesToIngest) {
Map<SchemaVersion, List<DocumentContext>> result = new HashMap<>();
for (Entry<SchemaVersion, List<String>> verFiles : filesToIngest.entrySet()) {
SchemaVersion v = verFiles.getKey();
List<String> files = verFiles.getValue();
List<DocumentContext> docs = new ArrayList<>();
for (String jsonPayload : files) {
docs.add(JsonPath.parse(jsonPayload));
}
result.put(v, docs);
}
return result;
}
/**
* Reads the json file at the given filename into an in-memory String.
*
* @param rulesFilename - json file to be read (must include path to the file)
* @return String json contents of the given file
*/
public String readInJsonFile(String rulesFilename) {
StringBuilder sb = new StringBuilder();
try (BufferedReader br = new BufferedReader(new FileReader(rulesFilename))) {
String line;
while ((line = br.readLine()) != null) {
sb.append(line);
}
} catch (IOException e) {
LOGGER.warn("Exception in file" + e.getMessage());
throw new ExceptionInInitializerError(e);
}
return sb.toString();
}
}
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