/**
* 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.action.template;
import org.apache.velocity.Template;
import org.apache.velocity.VelocityContext;
import org.apache.velocity.runtime.parser.ParseException;
import org.thingsboard.server.common.msg.device.ToDeviceActorMsg;
import org.thingsboard.server.common.msg.session.FromDeviceRequestMsg;
import org.thingsboard.server.common.msg.session.ToDeviceMsg;
import org.thingsboard.server.extensions.api.plugins.PluginAction;
import org.thingsboard.server.extensions.api.plugins.msg.PluginToRuleMsg;
import org.thingsboard.server.extensions.api.plugins.msg.ResponsePluginToRuleMsg;
import org.thingsboard.server.extensions.api.plugins.msg.RuleToPluginMsg;
import org.thingsboard.server.extensions.api.rules.RuleContext;
import org.thingsboard.server.extensions.api.rules.RuleProcessingMetaData;
import org.thingsboard.server.extensions.api.rules.SimpleRuleLifecycleComponent;
import org.thingsboard.server.extensions.core.utils.VelocityUtils;
import java.util.Optional;
/**
* @author Andrew Shvayka
*/
public abstract class AbstractTemplatePluginAction<T extends TemplateActionConfiguration> extends SimpleRuleLifecycleComponent implements PluginAction<T> {
protected T configuration;
protected Template template;
@Override
public void init(T configuration) {
this.configuration = configuration;
try {
this.template = VelocityUtils.create(configuration.getTemplate(), "Template");
} catch (ParseException e) {
throw new RuntimeException(e.getMessage(), e);
}
}
@Override
public Optional<RuleToPluginMsg<?>> convert(RuleContext ctx, ToDeviceActorMsg msg, RuleProcessingMetaData deviceMsgMd) {
FromDeviceRequestMsg payload;
if (msg.getPayload() instanceof FromDeviceRequestMsg) {
payload = (FromDeviceRequestMsg) msg.getPayload();
} else {
throw new IllegalArgumentException("Action does not support messages of type: " + msg.getPayload().getMsgType());
}
return buildRuleToPluginMsg(ctx, msg, payload);
}
@Override
public Optional<ToDeviceMsg> convert(PluginToRuleMsg<?> response) {
if (response instanceof ResponsePluginToRuleMsg) {
return Optional.of(((ResponsePluginToRuleMsg) response).getPayload());
}
return Optional.empty();
}
protected String getMsgBody(RuleContext ctx, ToDeviceActorMsg msg) {
VelocityContext context = VelocityUtils.createContext(ctx.getDeviceAttributes(), msg.getPayload());
return VelocityUtils.merge(template, context);
}
abstract protected Optional<RuleToPluginMsg<?>> buildRuleToPluginMsg(RuleContext ctx,
ToDeviceActorMsg msg,
FromDeviceRequestMsg payload);
@Override
public boolean isOneWayAction() {
return !configuration.isSync();
}
}