read from file

tools/src/main/java/org/thingsboard/client/tools/MqttStressTestTool.java

@@ -22,7 +22,12 @@ import org.eclipse.paho.client.mqttv3.IMqttToken;
 import org.thingsboard.server.common.data.Device;
 import org.thingsboard.server.common.data.security.DeviceCredentials;
 
+import java.io.BufferedWriter;
+import java.io.IOException;
 import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.UUID;
@@ -58,16 +63,20 @@ public class MqttStressTestTool {
 
         List<MqttStressTestClient> clients = new ArrayList<>();
         List<IMqttToken> connectTokens = new ArrayList<>();
+        List<String> deviceCredentialsIds = new ArrayList<>();
         for (int i = 0; i < params.getDeviceCount(); i++) {
             Device device = restClient.createDevice("Device " + UUID.randomUUID());
             DeviceCredentials credentials = restClient.getCredentials(device.getId());
             String[] mqttUrls = params.getMqttUrls();
             String mqttURL = mqttUrls[i % mqttUrls.length];
             MqttStressTestClient client = new MqttStressTestClient(results, mqttURL, credentials.getCredentialsId());
+            deviceCredentialsIds.add(credentials.getCredentialsId());
             connectTokens.add(client.connect());
             clients.add(client);
         }
 
+        dumpDeviceCredentialsIdsToTmpFile(deviceCredentialsIds);
+
         for (IMqttToken tokens : connectTokens) {
             tokens.waitForCompletion();
         }
@@ -114,4 +123,20 @@ public class MqttStressTestTool {
         scheduler.shutdownNow();
     }
 
+    private static void dumpDeviceCredentialsIdsToTmpFile(List<String> deviceCredentialsIds) throws IOException {
+        Path path = Paths.get("/tmp/mqtt.csv");
+        try (BufferedWriter writer = Files.newBufferedWriter(path)) {
+            writer.write("deviceCredentialsId");
+            writer.write('\n');
+            deviceCredentialsIds.forEach((deviceCredentialsId) -> {
+                try {
+                    writer.write(deviceCredentialsId);
+                    writer.write('\n');
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
+            });
+        }
+    }
+
 }

tools/src/test/scala/org/thingsboard/client/tools/MqttSimulation.scala

@@ -1,18 +1,18 @@
 /**
- * Copyright © 2016 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.
- */
+  * Copyright © 2016 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.client.tools
 
 import io.gatling.core.Predef._
@@ -22,16 +22,19 @@ import scala.concurrent.duration._
 import com.github.mnogu.gatling.mqtt.Predef._
 
 class MqttSimulation extends Simulation {
+
   val mqttConf = mqtt
     .host("tcp://localhost:1883")
-    .userName("A1_TEST_TOKEN")
+    .userName("${deviceCredentialsId}")
 
   val scn = scenario("MQTT Test")
+    .feed(csv("/tmp/mqtt.csv").circular)
     .exec(mqtt("request")
       .publish("v1/devices/me/telemetry", "{\"key1\":\"value1\", \"key2\":\"value2\"}", QoS.AT_LEAST_ONCE, retain = false))
 
   setUp(
-    scn
-      .inject(constantUsersPerSec(2) during(5 seconds)))
-    .protocols(mqttConf)
+      scn
+        .inject(constantUsersPerSec(1000) during (5 seconds))
+  ).protocols(mqttConf)
+
 }