How to start a waveform from a python script, if a component is run on two different architectures?

I had asked an earlier question on how to create and run the same component on different architecture, Same component run on 2 different GPPs. The IDE can create a component that can run on two different architectures via the implementation tab. When you launch the waveform, you have the option to specify a particular GPP for a component instance.

How would you do the same thing when you are not launching the waveform from the IDE? I currently launch waveforms from a python script.

Solution

You can accomplish this by passing a DeviceAssignmentSequence as the third argument to the ApplicationFactory::create() call.

Each member of the sequence is a DeviceAssignmentType that takes two string parameters. The first is the Component's usagename as it appears in the SAD file. The second is the identifier for the Device that you would like to deploy your Component to.

An example:

from ossie.utils import redhawk
from ossie.cf import CF
dom = redhawk.attach("REDHAWK_DEV")

# Find the devices
for devMgr in dom.devMgrs:
    # Check the name of  Device Manager
    if devMgr.name == 'DEV_MGR1':
        # Find the GPP
        for dev in devMgr.devs:
            if dev.name == 'GPP'
                dev1 = dev
    elif devMgr.name == 'DEV_MGR2':
        # Find the GPP
        for dev in devMgr.devs:
            if dev.name == 'GPP'
                dev2 = dev

# Create the deployment requirements
# First variable is comp name as it appears in the SAD file, second is device ID
assignment1 = CF.DeviceAssignmentType('comp_1', dev1._get_identifier())
assignment2 = CF.DeviceAssignmentType('comp_2', dev2._get_identifier())

# Install the Application Factory
dom.installApplicationFactory('/waveforms/app_name/app_name.sad.xml')

# Get the Application Factory
facs = dom._get_applicationFactories()
# If using multiple, different Applications, this list needs to be iterated
# to get the correct factory
app_fac = facs[0]

# Create the Application
app = app_fac.create(app_fac._get_name(), [], [assignment1, assignment2])

# Uninstall the Application Factory
dom.uninstallApplication(app_fac._get_identifier())