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/*-
* ============LICENSE_START=======================================================
* ONAP - CDS
* ================================================================================
* Copyright (C) 2019 Huawei Technologies Co., Ltd. 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.
* ============LICENSE_END=========================================================
*/
package org.onap.ccsdk.cds.blueprintsprocessor.dmaap
import com.att.nsa.mr.client.MRBatchingPublisher
import com.att.nsa.mr.client.MRPublisher
import org.slf4j.LoggerFactory
import java.io.IOException
import java.util.concurrent.TimeUnit
/**
* Abstraction of DMAAP client services that could form DMAAP client from the
* properties provided. This abstraction also provides a mechanism to send
* messages with the given partition in a session and closing the same.
*/
interface BluePrintDmaapClientService {
/**
* Static variable for logging.
*/
companion object {
var log = LoggerFactory.getLogger(
BluePrintDmaapClientService::class.java
)!!
}
/**
* Returns the properly constructed DMAAP client with the type.
*/
fun getDmaapClient(): MutableList<MRBatchingPublisher>
/**
* Sends messages to the sessions created by the information provided from
* application.properties and event.properties file
*/
fun sendMessage(msgs: Collection<String>): Boolean {
var success = true
val clients = getDmaapClient()
val dmaapMsgs = mutableListOf<MRPublisher.message>()
for (m in msgs) {
dmaapMsgs.add(MRPublisher.message("1", m))
}
log.info("Sending messages to the DMAAP Server")
for (client in clients) {
try {
client.send(dmaapMsgs)
} catch (e: IOException) {
success = false
log.error(e.message, e)
}
}
return success
}
/**
* Sends message to the sessions created by the information provided from
* application.properties and event.properties file
*/
fun sendMessage(msg: String): Boolean {
val msgs = mutableListOf<String>()
msgs.add(msg)
return sendMessage(msgs)
}
/**
* Closes the opened session that was used for sending messages.
*/
fun close(timeout: Long): MutableList<MutableList<MRPublisher.message>>? {
log.debug("Closing the DMAAP producer clients")
var msgs: MutableList<MutableList<MRPublisher.message>> =
mutableListOf()
val clients = getDmaapClient()
for (client in clients) {
try {
var ms = client.close(timeout, TimeUnit.SECONDS)
msgs.add(ms)
} catch (e: IOException) {
log.warn(
"Unable to cleanly close the connection from the " +
"client $client",
e
)
}
}
return msgs
}
}
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