Add controller properties for monitoring enable or not

ngrinder-controller/src/main/java/org/ngrinder/agent/controller/MonitorManagerApiController.java

@@ -13,6 +13,7 @@
  */
 package org.ngrinder.agent.controller;
 
+import org.ngrinder.common.exception.NGrinderRuntimeException;
 import org.ngrinder.common.util.AopUtils;
 import org.ngrinder.infra.config.Config;
 import org.ngrinder.monitor.controller.model.SystemDataModel;
@@ -53,6 +54,13 @@ public class MonitorManagerApiController {
 	 */
 	@GetMapping("/state")
 	public SystemDataModel getRealTimeMonitorData(@RequestParam final String ip) throws InterruptedException, ExecutionException, TimeoutException {
+		if (!config.isMonitorEnabled()) {
+			throw new NGrinderRuntimeException(
+				"Monitoring is disabled. If you want to enable monitoring feature," +
+					" modify system settings. but there is a risk of attack from the monitoring server."
+			);
+		}
+
 		int port = config.getMonitorPort();
 		Future<SystemInfo> systemInfoFuture = AopUtils.proxy(this).getAsyncSystemInfo(ip, port);
 		SystemInfo systemInfo = checkNotNull(systemInfoFuture.get(2, TimeUnit.SECONDS), "Monitoring data is not available.");

ngrinder-controller/src/main/java/org/ngrinder/common/constant/ControllerConstants.java

@@ -60,6 +60,7 @@ public interface ControllerConstants {
 	String PROP_CONTROLLER_MAX_RUN_HOUR = "controller.max_run_hour";
 	String PROP_CONTROLLER_MAX_VUSER_PER_AGENT = "controller.max_vuser_per_agent";
 	String PROP_CONTROLLER_MONITOR_PORT = "controller.monitor_port";
+	String PROP_CONTROLLER_ENABLE_MONITOR = "controller.enable_monitor";
 	String PROP_CONTROLLER_PLUGIN_SUPPORT = "controller.plugin_support";
 	String PROP_CONTROLLER_SAFE_DIST = "controller.safe_dist";
 	String PROP_CONTROLLER_SAFE_DIST_THRESHOLD = "controller.safe_dist_threshold";

ngrinder-controller/src/main/java/org/ngrinder/infra/config/Config.java

@@ -238,6 +238,10 @@ public int getMonitorPort() {
 		return getControllerProperties().getPropertyInt(PROP_CONTROLLER_MONITOR_PORT);
 	}
 
+	public boolean isMonitorEnabled() {
+		return getControllerProperties().getPropertyBoolean(PROP_CONTROLLER_ENABLE_MONITOR);
+	}
+
 	/**
 	 * Check if the periodic usage report is enabled.
 	 *

ngrinder-controller/src/main/resources/controller-properties.map

@@ -14,6 +14,7 @@ controller.max_run_count,10000,agent.max.runcount
 controller.max_run_hour,8,agent.max.runhour
 controller.max_concurrent_test,10,ngrinder.max.concurrenttest
 controller.monitor_port,13243,monitor.listen.port
+controller.enable_monitor,false,
 controller.url,,ngrinder.http.url,http.url
 controller.console_port_base,12000,ngrinder.console.portbase
 controller.controller_port,16001,ngrinder.agent.control.port

ngrinder-controller/src/main/resources/ngrinder_home_template/system.conf

@@ -1,4 +1,4 @@
-# Set verbose to print the detailed log 
+# Set verbose to print the detailed log
 #controller.verbose=true
 
 # If dev_mode is true, the log goes to stdout and
@@ -32,7 +32,6 @@
 # true if you want to controller uses high level password encoding(sha256).
 #controller.user_password_sha256=false
 
-
 # The maximum number of agents which can be attached per one test.
 #controller.max_agent_per_test=10
 
@@ -52,6 +51,9 @@
 # The monitor connecting port. The default value is 13243.
 #controller.monitor_port=13243
 
+# monitoring feature enable or not.
+#controller.enable_monitor=false
+
 # The base URL of the controller. If not set, the controller URL is automatically selected.
 #controller.url=
 
@@ -135,7 +137,7 @@
 # clustering configuration.
 # This is not the option applied on the fly. You need to reboot to apply this.
 ######################################################################################
-# These should be very carefully set. 
+# These should be very carefully set.
 # You can refer http://www.cubrid.org/wiki_ngrinder/entry/controller-clustering-guide
 
 # if you want to enable controller clustering. please enable below.

ngrinder-frontend/src/js/components/perftest/modal/TargetHostInfoModal.vue

@@ -90,13 +90,13 @@
                 this.memory.queue.enQueue(res.data.totalMemory - res.data.freeMemory);
                 this.cpu.chart.load({ json: { 'cpu-usage': this.cpu.queue.getArray() } });
                 this.memory.chart.load({ json: { 'memory-usage': this.memory.queue.getArray() } });
-            });
+            }).catch(() => {}); // ignore error.
         }
 
         closeMonitorConnection() {
             this.$http.get('/monitor/api/close', {
                 params: {
-                    ip: this.ip
+                    ip: this.ip,
                 },
             });
         }