/**
* Copyright © 2016-2017 The Thingsboard Authors
*
* 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.thingsboard.server.extensions.core.filter;
import lombok.extern.slf4j.Slf4j;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.thingsboard.server.common.data.kv.AttributeKvEntry;
import org.thingsboard.server.common.msg.core.UpdateAttributesRequest;
import org.thingsboard.server.common.msg.device.ToDeviceActorMsg;
import org.thingsboard.server.common.msg.session.FromDeviceMsg;
import org.thingsboard.server.extensions.api.component.Filter;
import org.thingsboard.server.extensions.api.device.DeviceAttributes;
import org.thingsboard.server.extensions.api.rules.RuleContext;
import javax.script.Bindings;
import javax.script.ScriptException;
import javax.script.SimpleBindings;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
/**
* @author Andrew Shvayka
*/
@Filter(name = "Device Attributes Filter", descriptor = "JsFilterDescriptor.json", configuration = JsFilterConfiguration.class)
@Slf4j
public class DeviceAttributesFilter extends BasicJsFilter {
public static final String CLIENT_SIDE = "cs";
public static final String SERVER_SIDE = "ss";
public static final String SHARED = "shared";
@Override
protected boolean doFilter(RuleContext ctx, ToDeviceActorMsg msg) throws ScriptException {
return evaluator.execute(toBindings(ctx.getDeviceAttributes(), msg != null ? msg.getPayload() : null));
}
private Bindings toBindings(DeviceAttributes attributes, FromDeviceMsg msg) {
Bindings bindings = new SimpleBindings();
convertListEntries(bindings, CLIENT_SIDE, attributes.getClientSideAttributes());
convertListEntries(bindings, SERVER_SIDE, attributes.getServerSideAttributes());
convertListEntries(bindings, SHARED, attributes.getServerSidePublicAttributes());
if (msg != null) {
switch (msg.getMsgType()) {
case POST_ATTRIBUTES_REQUEST:
updateBindings(bindings, (UpdateAttributesRequest) msg);
break;
}
}
return bindings;
}
private void updateBindings(Bindings bindings, UpdateAttributesRequest msg) {
Map<String, Object> attrMap = (Map<String, Object>) bindings.get(CLIENT_SIDE);
for (AttributeKvEntry attr : msg.getAttributes()) {
if (!CLIENT_SIDE.equalsIgnoreCase(attr.getKey()) && !SERVER_SIDE.equalsIgnoreCase(attr.getKey())
&& !SHARED.equalsIgnoreCase(attr.getKey())) {
bindings.put(attr.getKey(), getValue(attr));
}
attrMap.put(attr.getKey(), getValue(attr));
}
bindings.put(CLIENT_SIDE, attrMap);
}
public static Bindings convertListEntries(Bindings bindings, String attributesVarName, Collection<AttributeKvEntry> attributes) {
Map<String, Object> attrMap = new HashMap<>();
for (AttributeKvEntry attr : attributes) {
if (!CLIENT_SIDE.equalsIgnoreCase(attr.getKey()) && !SERVER_SIDE.equalsIgnoreCase(attr.getKey())
&& !SHARED.equalsIgnoreCase(attr.getKey())) {
bindings.put(attr.getKey(), getValue(attr));
}
attrMap.put(attr.getKey(), getValue(attr));
}
bindings.put(attributesVarName, attrMap);
return bindings;
}
}