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/*-
* ============LICENSE_START=======================================================
* openECOMP : SDN-C
* ================================================================================
* Copyright (C) 2017 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.ccsdk.sli.core.sli;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class SvcLogicLoader {
private static final Logger LOGGER = LoggerFactory.getLogger(SvcLogicLoader.class);
protected SvcLogicStore store;
protected String directoryRoot;
public SvcLogicLoader(String directoryRoot, SvcLogicStore store) {
this.store = store;
this.directoryRoot = directoryRoot;
}
public SvcLogicLoader(String directoryRoot, String propFile) {
this.store = SvcLogicParser.getStore(propFile);
this.directoryRoot = directoryRoot;
}
public void loadAndActivate() throws IOException {
SvcLogicCrawler slc = new SvcLogicCrawler();
Files.walkFileTree(Paths.get(directoryRoot), slc);
loadGraphs(slc.getGraphPaths(), directoryRoot);
List<ActivationEntry> activationEntries = processActivationFiles(slc.getActivationPaths());
activateGraphs(activationEntries);
}
private List<ActivationEntry> processActivationFiles(List<Path> activationPaths) {
List<ActivationEntry> activationEntries = new ArrayList<ActivationEntry>();
for (Path activationFile : activationPaths) {
activationEntries.addAll(getActivationEntries(activationFile));
}
return activationEntries;
}
private void activateGraphs(List<ActivationEntry> activationEntries) {
for (ActivationEntry entry : activationEntries) {
try {
if (store.hasGraph(entry.module, entry.rpc, entry.version, entry.mode)) {
store.activate(entry.module, entry.rpc, entry.version, entry.mode);
} else {
LOGGER.error("hasGraph returned false for " + entry.toString());
}
} catch (SvcLogicException e) {
LOGGER.error("Failed to call hasGraph for " + entry.toString(), e);
}
}
}
protected List<ActivationEntry> getActivationEntries(Path activationFilePath) {
List<ActivationEntry> activationEntries = new ArrayList<>();
int lineNumber = 1;
try (BufferedReader br = Files.newBufferedReader(activationFilePath, StandardCharsets.US_ASCII)) {
String fileRead = br.readLine();
while (fileRead != null) {
String[] fields = fileRead.split("\\s");
if (fields.length == 4) {
activationEntries.add(parseActivationEntry(fields));
} else {
LOGGER.error("Activation entry [" + fileRead + "] is declared at line number " + lineNumber
+ " in the file " + activationFilePath + " and is invalid.");
}
fileRead = br.readLine();
lineNumber++;
}
return activationEntries;
} catch (IOException ioe) {
LOGGER.error("Couldn't read the activation file at " + activationFilePath, ioe);
return null;
}
}
protected void loadGraphs(List<Path> graphPaths, String directoryRoot) {
for (Path graphPath : graphPaths) {
try {
saveGraph(graphPath.toString());
} catch (Exception e) {
LOGGER.error("Couldn't load graph at " + graphPath, e);
}
}
}
private void saveGraph(String xmlFile) throws SvcLogicException {
File f = new File(xmlFile);
if (!f.canRead()) {
throw new ConfigurationException("Cannot read xml file (" + xmlFile + ")");
}
SvcLogicParser parser = new SvcLogicParser();
LinkedList<SvcLogicGraph> graphs = null;
try {
graphs = parser.parse(xmlFile);
} catch (Exception e) {
throw new SvcLogicException(e.getMessage(), e);
}
if (graphs == null) {
throw new SvcLogicException("Could not parse " + xmlFile);
}
for (Iterator<SvcLogicGraph> iter = graphs.iterator(); iter.hasNext();) {
SvcLogicGraph graph = iter.next();
try {
LOGGER.info("Saving " + graph.toString() + " to database");
store.store(graph);
} catch (Exception e) {
throw new SvcLogicException(e.getMessage(), e);
}
}
}
protected ActivationEntry parseActivationEntry(String[] fileInput) {
return new ActivationEntry(fileInput[0], fileInput[1], fileInput[2], fileInput[3]);
}
protected String getValue(String raw, String attributeName) {
raw = raw.substring(attributeName.length() + 1);
if (raw.contains(">")) {
raw = raw.substring(0, raw.lastIndexOf('>'));
}
if (raw.endsWith("'")) {
raw = raw.substring(0, raw.lastIndexOf('\''));
}
if (raw.endsWith("\"")) {
raw = raw.substring(0, raw.lastIndexOf('"'));
}
return raw;
}
}
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