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/*******************************************************************************
* ============LICENSE_START==================================================
* * org.onap.dmaap
* * ===========================================================================
* * Copyright © 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====================================================
* *
* * ECOMP is a trademark and service mark of AT&T Intellectual Property.
* *
******************************************************************************/
package org.onap.dmaap.datarouter.provisioning.beans;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.TreeSet;
import org.onap.dmaap.datarouter.provisioning.utils.ProvDbUtils;
/**
* This class is used to aid in the mapping of node names from/to node IDs.
*
* @author Robert P. Eby
* @version $Id: NodeClass.java,v 1.2 2014/01/15 16:08:43 eby Exp $
*/
public abstract class NodeClass extends Syncable {
private static final String PROV_0005_DO_INSERT = "PROV0005 doInsert: ";
private static Map<String, Integer> nodesMap;
private static EELFLogger intLogger = EELFManager.getInstance().getLogger("InternalLog");
NodeClass() {
// init on first use
if (nodesMap == null) {
reload();
}
}
/**
* Add nodes to the NODES table, when the NODES parameter value is changed. Nodes are only added to the table, they
* are never deleted. The node name is normalized to contain the domain (if missing).
*
* @param nodes a pipe separated list of the current nodes
*/
public static void setNodes(String[] nodes) {
if (nodesMap == null) {
reload();
}
int nextid = 0;
for (Integer n : nodesMap.values()) {
if (n >= nextid) {
nextid = n + 1;
}
}
// take | separated list, add domain if needed.
for (String node : nodes) {
node = normalizeNodename(node);
if (!nodesMap.containsKey(node)) {
intLogger.info("..adding " + node + " to NODES with index " + nextid);
nodesMap.put(node, nextid);
insertNodesToTable(nextid, node);
nextid++;
}
}
}
private static void insertNodesToTable(int nextid, String node) {
try (Connection conn = ProvDbUtils.getInstance().getConnection();
PreparedStatement ps = conn.prepareStatement(
"insert into NODES (NODEID, NAME, ACTIVE) values (?, ?, 1)")) {
ps.setInt(1, nextid);
ps.setString(2, node);
ps.execute();
} catch (SQLException e) {
intLogger.error(PROV_0005_DO_INSERT + e.getMessage(), e);
}
}
private static void reload() {
Map<String, Integer> tmpNodesMap = new HashMap<>();
try (Connection conn = ProvDbUtils.getInstance().getConnection();
PreparedStatement ps = conn.prepareStatement("select NODEID, NAME from NODES");
ResultSet rs = ps.executeQuery()) {
while (rs.next()) {
int id = rs.getInt("NODEID");
String name = rs.getString("NAME");
tmpNodesMap.put(name, id);
}
} catch (SQLException e) {
intLogger.error(PROV_0005_DO_INSERT + e.getMessage(),e);
}
nodesMap = tmpNodesMap;
}
static Integer lookupNodeName(final String name) {
Integer nodeName = nodesMap.get(name);
if (nodeName == null) {
throw new IllegalArgumentException("Invalid node name: " + name);
}
return nodeName;
}
/**
* Get node names.
* @param patt pattern to search
* @return collection of node names
*/
public static Collection<String> lookupNodeNames(String patt) {
Collection<String> coll = new TreeSet<>();
final Set<String> keyset = nodesMap.keySet();
for (String s : patt.toLowerCase().split(",")) {
if (s.endsWith("*")) {
addNodeToCollection(coll, keyset, s);
} else if (keyset.contains(s)) {
coll.add(s);
} else if (keyset.contains(normalizeNodename(s))) {
coll.add(normalizeNodename(s));
} else {
throw new IllegalArgumentException("Invalid node name: " + s);
}
}
return coll;
}
private static void addNodeToCollection(Collection<String> coll, Set<String> keyset, String str) {
str = str.substring(0, str.length() - 1);
for (String s2 : keyset) {
if (s2.startsWith(str)) {
coll.add(s2);
}
}
}
/**
* Method to add domain name.
* @param str nde name string
* @return normalized node name
*/
public static String normalizeNodename(String str) {
if (str != null && str.indexOf('.') <= 0) {
Parameters param = Parameters.getParameter(Parameters.PROV_DOMAIN);
if (param != null) {
String domain = param.getValue();
str += "." + domain;
}
return str.toLowerCase();
} else {
return str;
}
}
String lookupNodeID(int node) {
for (Map.Entry<String, Integer> entry : nodesMap.entrySet()) {
if (entry.getValue() == node) {
return entry.getKey();
}
}
return null;
}
}
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