Appium Parallel Execution + TestNG Framework issue - multithreading

Question

I Just started creating a framework for appium. I am facing challenges when i am trying to create driver.
It starts as follows
Step 1: Based on the thread count and devices i will be creating appium servers at runtime in TestNG's #Beforesuite.
cap.setCapability("noReset", "false");
cap.setCapability(MobileCapabilityType.DEVICE_NAME, "Dev1");
cap.setCapability(MobileCapabilityType.BROWSER_NAME, "Chrome");
cap.setCapability(MobileCapabilityType.UDID, udid);
//Build the Appium service
builder = new AppiumServiceBuilder();
builder.withIPAddress("127.0.0.1");
builder.usingAnyFreePort();
builder.withCapabilities(cap);
builder.withArgument(GeneralServerFlag.SESSION_OVERRIDE);
builder.withArgument(GeneralServerFlag.LOG_LEVEL, "error");
appiumservice = AppiumDriverLocalService.buildService(builder);
appiumservice.start();
Step 2: I will get the appium server url's for all devices connected using
appiumservice.getUrl().toString()
Now i have all server url's and Capabilities.
The question is now in TestNG.xml if i give Parallel and thread-count to 3 how can i set create a AndroidDriver object in #BeforeMethod in such a way each time it should take different appium server url and execute the tests ?
How should my #Beforemethod and #Aftermethod ?
Thanks

Answer 1

Pass port and device from testng :
<suite name="Suite" verbose="1" parallel="tests" thread-count="2">
<parameter name="properties" value="XXX" />
<tests>
<test name="Run on device 1">
<classes>
<parameter name="port" value="4723"/>
<parameter name="device" value="DeviceID1"></parameter>
<class name="com.testScripts.ABC">
<methods>
<include name="test1"/>
</methods>
</class>
</classes>
</test>
<test name="run on device 2">
<classes>
<parameter name="port" value="4724"></parameter>
<parameter name="device" value="DeviceID2"></parameter>
<class name="com.testScripts.ABC">
<methods>
<include name="test1"/>
</methods>
</class>
</classes>
</test>
</tests>
</suite>
Put following annotation in method whrere you are defining your capability ..
#BeforeTest(alwaysRun=true)
#Parameters({"port","device"})
Public void capablities()
{
cap.setCapability("noReset", "false");
cap.setCapability(MobileCapabilityType.DEVICE_NAME, device);
cap.setCapability(MobileCapabilityType.BROWSER_NAME, "Chrome");
cap.setCapability(MobileCapabilityType.UDID, udid);
//Build the Appium service
builder = new AppiumServiceBuilder();
builder.withIPAddress("127.0.0.1");
//use port pass in testng file
// builder.usingAnyFreePort();
builder.withCapabilities(cap);
builder.withArgument(GeneralServerFlag.SESSION_OVERRIDE);
builder.withArgument(GeneralServerFlag.LOG_LEVEL, "error");
appiumservice = AppiumDriverLocalService.buildService(builder);
appiumservice.start();
}

Answer 2

I would suggest initialising the driver in the #BeforeClass method, and as shiv mentioned use TestNG parameters:
driver = new RemoteWebDriver(new URL("http://0.0.0.0:"+ port +"/wd/hub"), capabilities);