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/*
* Copyright (c) 2018 Cisco Systems. 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.
*/
package com.cisco.ztt.cisco.xr.telemetry
import org.apache.log4j.Logger
import com.cisco.pnda.model.DataPlatformEvent
import com.cisco.ztt.TimeseriesDatapoint
import com.cisco.ztt.Transformer
import com.cisco.ztt.meta.Unit
import com.cisco.ztt.Payload
class TelemetryDispatcher(unit: Unit) extends Serializable with Transformer {
object Holder extends Serializable {
@transient lazy val logger = Logger.getLogger(getClass.getName)
}
def inputTopic: String = { unit.input_topic }
val transformers = unit.xr_telemetry.map( d => {
Holder.logger.warn("Choosing mapper for " + unit.processor)
unit.processor match {
case "timeseries" => d.path -> new TimeseriesMapper(d, unit.timeseries_namespace)
case "inventory" => d.path -> new InventoryMapper(d)
case _ => d.path -> new NullMapper(d.path)
}
}).toMap
def transform(rawEvent: DataPlatformEvent): (Boolean, Set[Payload]) = {
Holder.logger.trace(rawEvent.getRawdata())
try {
val source = if (unit.publish_src == null) { "timeseries" } else { unit.publish_src }
val event = JsonParser.parse(rawEvent.getRawdata())
val path = event.Telemetry.encoding_path
if (transformers.contains(path)) {
Holder.logger.debug("Transforming for " + path)
val datapoints = transformers(path).transform(event)
val payloads = datapoints.map(d => {
new Payload(source, unit.output_topic,
rawEvent.getHostIp, rawEvent.getTimestamp, d)
})
(true, payloads)
} else {
Holder.logger.trace("No transformer in unit for " + path)
(false, Set[Payload]())
}
} catch {
case t: Throwable => {
Holder.logger.error("Failed to parse JSON: " + t.getClass().getName() + " : " + t.getLocalizedMessage)
(false, Set[Payload]())
}
}
}
}
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