Structure of the Jython File

The Jython file is composed of three parts in a specific order:

  1. Imports

  2. Main Function - DiscoveryMain

  3. Functions definitions (optional)

The following is an example of a Jython script:

#   imports section
from appilog.common.system.types import ObjectStateHolder
from appilog.common.system.types.vectors import ObjectStateHolderVector
# Function definition
def foo:
    # do something
#   Main Function
def DiscoveryMain(Framework):
    OSHVResult = ObjectStateHolderVector()
    ## Write implementation to return new result CIs here...
    return OSHVResult


Jython classes are spread across hierarchical namespaces. In version 7.0 or later, unlike in previous versions, there are no implicit imports, and so every class you use must be imported explicitly. (This change was made for performance reasons and to enable an easier understanding of the Jython script by not hiding necessary details.)

  • To import a Jython script:

    import logger
  • To import a Java class:

    from appilog.collectors.clients import ClientsConsts

Main Function – DiscoveryMain

Each Jython runnable script file contains a main function: DiscoveryMain.

The DiscoveryMain function is the main entry into the script; it is the first function that runs. The main function may call other functions that are defined in the scripts:

def DiscoveryMain(Framework):

The Framework argument must be specified in the main function definition. This argument is used by the main function to retrieve information that is required to run the scripts (such as information on the Trigger CI and parameters) and can also be used to report on errors that occur during the script run.

You can create a Jython script without any main method. Such scripts are used as library scripts that are called from other scripts.

Functions Definition

Each script can contain additional functions that are called from the main code. Each such function can call another function, which either exists in the current script or in another script (use the import statement). Note that to use another script, you must add it to the Scripts section of the package:

Example of a Function Calling Another Function:

In the following example, the main code calls the doQueryOSUsers(..) method which calls an internal method doOSUserOSH(..):

def doOSUserOSH(name):
    sw_obj = ObjectStateHolder('winosuser')
    sw_obj.setAttribute('data_name', name)
    # return the object
    return sw_obj
def doQueryOSUsers(client, OSHVResult):
    _hostObj = modeling.createHostOSH(client.getIpAddress())
    data_name_mib = ',,string'
    resultSet = client.executeQuery(data_name_mib)
        UserName = resultSet.getString(2)
        ########## send object ##############
        OSUserOSH = doOSUserOSH(UserName)
def DiscoveryMain(Framework):
    OSHVResult = ObjectStateHolderVector()
        client = Framework.createClient(Framework.getTriggerCIData(BaseClient.CREDENTIALS_ID))
        Framework.reportError('Connection failed')
        doQueryOSUsers(client, OSHVResult)
    return OSHVResult

If this script is a global library that is relevant to many adapters, you can add it to the list of scripts in the jythonGlobalLibs.xml configuration file, instead of adding it to each adapter (Adapter Management > Resources Pane > AutoDiscoveryContent > Configuration Files).

Parent topic: Create Jython Code