Task 54140: automatically start load from pipeline rather than requir…

…ing start button in UI

autoLoadTest.php

@@ -0,0 +1,58 @@
+<?php
+    $application = getenv("VCAP_APPLICATION");
+    $application_json = json_decode($application, true);
+    $applicationURI = $application_json["application_uris"][0];
+
+    if (!isset($_GET['action']) || $_GET['action'] == 'status') {
+        //Show status of load testing
+        if (file_exists("RUNNING")) {
+			echo "Load test is running. ";
+			echo file_get_contents("RUNNING");
+		} else {
+			echo "Load test is not running. Use http://$applicationURI/autoLoadTest.php?count=COUNT&delay=DELAY&action=start to start load testing.";
+		}	
+    } else if ($_GET['action'] == 'stop') {
+		//Turn off load test
+		exec('rm -f RUNNING');
+		print "Load test is stopped.\n";
+	} else if ($_GET['action'] == 'start') {
+		//If already running, tell user to issue a stop first. We could fancier and kill
+		//the running script and update with the new params but for now let's just...
+		if (file_exists("RUNNING")) {
+			print("Load test is already running. Use http://$applicationURI/autoLoadTest.php?action=stop to stop the running test.");
+			exit();
+		}
+
+		//Calculate route to catalog loadTest URL
+		$applicationName = $application_json["name"];
+		$catalogAppName = str_replace("ui-", "catalog-api-", $applicationName);
+		$catalogAppName = str_replace("-ui", "-catalog-api", $catalogAppName);
+		$catalogHost=substr_replace($applicationURI, $catalogAppName, 0, strlen($applicationName));
+		$catalogRoute = "http://" . $catalogHost;
+
+		//Specify count in loadTest URL
+		if (isset($_GET['count'])) {
+			$count = $_GET['count'];
+		} else {
+			$count = 100;
+		}
+		$url = $catalogRoute . "/loadTest?count=" . $count;
+
+		//Specify the delay between calls to loadTest
+		if (isset($_GET['delay'])) {
+			$delay = $_GET['delay'];
+		} else {
+			$delay = 0;
+		}
+
+		//Use a RUNNING file to indicate load test is running
+		echo exec("echo 'Count: $count Delay: $delay' > RUNNING");
+
+		//Start the load script in the background and return
+		#Print "load.sh -d $delay -u $url\n";
+		echo exec("sh load.sh -d $delay -u $url > load.log 2>&1 &");
+		print "Loaded started with delay $delay on $url\n";
+	} else {
+		print "Unsupported action {$_GET['action']}";
+	}
+?>

load.sh

@@ -0,0 +1,59 @@
+#!/bin/sh
+# This script generates load on the specified URL.
+
+#Accepts a delay and a URL
+
+while getopts :d:u: opt; do
+  case $opt in
+    d)  #set delay
+      DELAY=$OPTARG
+      #echo "DELAY = $DELAY"
+      ;;
+    u)  #set url
+      URL=$OPTARG
+      #echo "URL = $URL"
+      ;;
+    \?) #invalid arg
+      echo "Invalid argument -$OPTARG"
+      exit 1;
+      ;;
+  esac
+done
+
+if [ -z "$URL" ]; then
+	echo "URL must be specified with -u";
+	exit 1;
+fi
+
+#Default delay to 0 if not specified
+if [ -z "$DELAY" ]; then
+	DELAY=0;
+fi
+
+#echo "Delay: $DELAY";
+
+#Check for RUNNING file to determine if load should be generated
+if [ ! -f "RUNNING" ] ; then
+	echo "Load test not running. Exiting...";
+	exit 0;
+fi
+
+#Clean up the results log file if it exists
+if [ -f results.log ] ; then
+	echo "Cleaning up old results.log"
+	rm -f results.log
+fi
+
+#TODO: Get fancier to prevent someone from stopping and starting the load during sleep interval
+# and ending up with multiple load scripts continuing to run simultaneously. For example, could
+# put the PID in RUNNING and either verify it here or have the calling script kill this process.
+
+echo "Starting load to $URL";
+
+while [ -f RUNNING ] ;
+do
+	curl -s $URL -w "\n"  >> results.log;
+	sleep $DELAY;
+done
+
+echo "Done.";