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/*
* Copyright 2014-2015 Open Networking Laboratory
*
* 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.provider.lldp.impl;
import static com.google.common.base.Preconditions.checkNotNull;
import static org.slf4j.LoggerFactory.getLogger;
import com.fasterxml.jackson.core.JsonEncoding;
import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ArrayNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
import org.onosproject.net.Device;
import org.onosproject.net.DeviceId;
import org.slf4j.Logger;
import java.io.File;
import java.io.IOException;
import java.util.EnumSet;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
/*
* JSON file example
*
{
"deviceId" : [ "of:2222000000000000" ],
"deviceType" : [ "ROADM" ],
"annotation" : { "no-lldp" : null, "sendLLDP" : "false" }
}
*/
/**
* Allows for reading and writing LLDP suppression definition as a JSON file.
*/
public class SuppressionRulesStore {
private static final String DEVICE_ID = "deviceId";
private static final String DEVICE_TYPE = "deviceType";
private static final String ANNOTATION = "annotation";
private final Logger log = getLogger(getClass());
private final File file;
/**
* Creates a reader/writer of the LLDP suppression definition file.
*
* @param filePath location of the definition file
*/
public SuppressionRulesStore(String filePath) {
file = new File(filePath);
}
/**
* Creates a reader/writer of the LLDP suppression definition file.
*
* @param file definition file
*/
public SuppressionRulesStore(File file) {
this.file = checkNotNull(file);
}
/**
* Returns SuppressionRules.
*
* @return SuppressionRules
* @throws IOException if error occurred while reading the data
*/
public SuppressionRules read() throws IOException {
final Set<DeviceId> suppressedDevice = new HashSet<>();
final EnumSet<Device.Type> suppressedDeviceType = EnumSet.noneOf(Device.Type.class);
final Map<String, String> suppressedAnnotation = new HashMap<>();
ObjectMapper mapper = new ObjectMapper();
ObjectNode root = (ObjectNode) mapper.readTree(file);
for (JsonNode deviceId : root.get(DEVICE_ID)) {
if (deviceId.isTextual()) {
suppressedDevice.add(DeviceId.deviceId(deviceId.asText()));
} else {
log.warn("Encountered unexpected JSONNode {} for deviceId", deviceId);
}
}
for (JsonNode deviceType : root.get(DEVICE_TYPE)) {
if (deviceType.isTextual()) {
suppressedDeviceType.add(Device.Type.valueOf(deviceType.asText()));
} else {
log.warn("Encountered unexpected JSONNode {} for deviceType", deviceType);
}
}
JsonNode annotation = root.get(ANNOTATION);
if (annotation.isObject()) {
ObjectNode obj = (ObjectNode) annotation;
Iterator<Entry<String, JsonNode>> it = obj.fields();
while (it.hasNext()) {
Entry<String, JsonNode> entry = it.next();
final String key = entry.getKey();
final JsonNode value = entry.getValue();
if (value.isValueNode()) {
if (value.isNull()) {
suppressedAnnotation.put(key, SuppressionRules.ANY_VALUE);
} else {
suppressedAnnotation.put(key, value.asText());
}
} else {
log.warn("Encountered unexpected JSON field {} for annotation", entry);
}
}
} else {
log.warn("Encountered unexpected JSONNode {} for annotation", annotation);
}
return new SuppressionRules(suppressedDevice,
suppressedDeviceType,
suppressedAnnotation);
}
/**
* Writes the given SuppressionRules.
*
* @param rules SuppressionRules
* @throws IOException if error occurred while writing the data
*/
public void write(SuppressionRules rules) throws IOException {
ObjectMapper mapper = new ObjectMapper();
ObjectNode root = mapper.createObjectNode();
ArrayNode deviceIds = mapper.createArrayNode();
ArrayNode deviceTypes = mapper.createArrayNode();
ObjectNode annotations = mapper.createObjectNode();
root.set(DEVICE_ID, deviceIds);
root.set(DEVICE_TYPE, deviceTypes);
root.set(ANNOTATION, annotations);
rules.getSuppressedDevice()
.forEach(deviceId -> deviceIds.add(deviceId.toString()));
rules.getSuppressedDeviceType()
.forEach(type -> deviceTypes.add(type.toString()));
rules.getSuppressedAnnotation().forEach((key, value) -> {
if (value == SuppressionRules.ANY_VALUE) {
annotations.putNull(key);
} else {
annotations.put(key, value);
}
});
mapper.writeTree(new JsonFactory().createGenerator(file, JsonEncoding.UTF8),
root);
}
}
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