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/*
* Copyright 2015-present Open Networking Foundation
*
* 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 org.onosproject.xran.impl;
import com.fasterxml.jackson.databind.JsonNode;
import org.onlab.packet.IpAddress;
import org.onosproject.core.ApplicationId;
import org.onosproject.net.config.Config;
import org.onosproject.xran.codecs.api.ECGI;
import org.onosproject.xran.codecs.api.EUTRANCellIdentifier;
import org.onosproject.xran.codecs.api.PLMNIdentity;
import org.onosproject.xran.codecs.util.HexConverter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.xml.bind.DatatypeConverter;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
/**
* Xran config.
*/
public class XranConfig extends Config<ApplicationId> {
private static final String CELLS = "active_cells";
private static final String PLMN_ID = "plmn_id";
private static final String ECI_ID = "eci";
private static final String IP_ADDR = "ip_addr";
private static final String XRANC_PORT = "xranc_port";
private static final String XRANC_CELLCONFIG_INTERVAL = "xranc_cellconfigrequest_interval_seconds";
private static final String RX_SIGNAL_MEAS_REPORT_INTERVAL = "rx_signal_meas_report_interval_ms";
private static final String L2_MEAS_REPORT_INTERVAL = "l2_meas_report_interval_ms";
private static final String ADMISSION_SUCCESS = "admission_success";
private static final String BEARER_SUCCESS = "bearer_success";
private static final String NO_MEAS_LINK_REMOVAL = "no_meas_link_removal_ms";
private static final String IDLE_UE_REMOVAL = "idle_ue_removal_ms";
private static final String NORTHBOUND_TIMEOUT = "nb_response_timeout_ms";
private final Logger log = LoggerFactory.getLogger(getClass());
/**
* Get a list of all CELLs inside the configuration file.
*
* @return Map of CELL IP to ECGI
*/
public Map<IpAddress, ECGI> activeCellSet() {
Map<IpAddress, ECGI> cells = new ConcurrentHashMap<>();
JsonNode cellsNode = object.get(CELLS);
if (cellsNode == null) {
log.warn("no cells have been provided!");
return cells;
}
cellsNode.forEach(cellNode -> {
String plmnId = cellNode.get(PLMN_ID).asText();
String eci = cellNode.get(ECI_ID).asText();
String ipAddress = cellNode.get(IP_ADDR).asText();
ECGI ecgi = hexToEcgi(plmnId, eci);
cells.put(IpAddress.valueOf(ipAddress), ecgi);
});
return cells;
}
/**
* Get flag for ADMISSION_SUCCESS field in configuration.
*
* @return boolean value in configuration
*/
public boolean admissionFlag() {
JsonNode flag = object.get(ADMISSION_SUCCESS);
return flag != null && flag.asBoolean();
}
/**
* Get flag for BEARER_SUCCESS field in configuration.
*
* @return boolean value in configuration
*/
public boolean bearerFlag() {
JsonNode flag = object.get(BEARER_SUCCESS);
return flag != null && flag.asBoolean();
}
/**
* Get port for xRAN controller server to bind to from configuration.
*
* @return port number
*/
public int getXrancPort() {
return object.get(XRANC_PORT).asInt();
}
/**
* Get config request interval from configuration.
*
* @return interval in seconds
*/
public int getConfigRequestInterval() {
return object.get(XRANC_CELLCONFIG_INTERVAL).asInt();
}
/**
* Get rx signal interval from configuration.
*
* @return interval in milliseconds
*/
public int getRxSignalInterval() {
return object.get(RX_SIGNAL_MEAS_REPORT_INTERVAL).asInt();
}
/**
* Get l2 measurement interval from configuration.
*
* @return interval in milliseconds
*/
public int getL2MeasInterval() {
return object.get(L2_MEAS_REPORT_INTERVAL).asInt();
}
/**
* Get removal time of link after not getting measurement from configuration.
*
* @return interval in milliseconds
*/
public int getNoMeasLinkRemoval() {
return object.get(NO_MEAS_LINK_REMOVAL).asInt();
}
/**
* Get removal time of UE after being IDLE from configuration.
*
* @return interval in milliseconds
*/
public int getIdleUeRemoval() {
return object.get(IDLE_UE_REMOVAL).asInt();
}
/**
* Get northbound timeout when waiting for responses from configuration.
*
* @return interval in milliseconds
*/
public int getNorthBoundTimeout() {
return object.get(NORTHBOUND_TIMEOUT).asInt();
}
/**
* Get ECGI from HEX representation of PLMN_ID and ECI.
*
* @param plmnId HEX string of PLMN_ID
* @param eci HEX string of ECI
* @return new ECGI object
*/
private ECGI hexToEcgi(String plmnId, String eci) {
byte[] bytes = HexConverter.fromShortHexString(plmnId);
byte[] bytearray = DatatypeConverter.parseHexBinary(eci);
InputStream inputStream = new ByteArrayInputStream(bytearray);
PLMNIdentity plmnIdentity = new PLMNIdentity(bytes);
EUTRANCellIdentifier eutranCellIdentifier = new EUTRANCellIdentifier(bytearray, 28);
ECGI ecgi = new ECGI();
ecgi.setEUTRANcellIdentifier(eutranCellIdentifier);
ecgi.setPLMNIdentity(plmnIdentity);
try {
ecgi.decode(inputStream);
} catch (IOException e) {
e.printStackTrace();
}
return ecgi;
}
}