1 files changed, 106 insertions, 0 deletions
diff --git a/ms/blueprintsprocessor/modules/commons/dmaap-lib/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/dmaap/BluePrintDmaapClientService.kt b/ms/blueprintsprocessor/modules/commons/dmaap-lib/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/dmaap/BluePrintDmaapClientService.kt
new file mode 100644
index 000000000..82c3f3a80
--- /dev/null
+++ b/ms/blueprintsprocessor/modules/commons/dmaap-lib/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/dmaap/BluePrintDmaapClientService.kt
@@ -0,0 +1,106 @@
+/*-
+ * ============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
+    }
+}