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Install component's IDL

In case you haven't done this step already, you must Build and install IDL first.

Create component

cd ~/workspace
getTemplateForDirectory MODROOT_WS pyHelloComp
cd pyHelloComp/src
mkdir ws
touch ws/__init__.py
touch ws/HelloComponentImpl.py
vim Makefile

We modify the Makefile for this component:

pyHelloComp/src/Makefile
...
PY_PACKAGES = ws
...

We fill the component code as follows:

vim ws/HelloComponentImpl.py
pyHelloComp/src/ws/HelloComponentImpl.py
# Client stubs and definitions, such as structs, enums, etc.
import workshop
# Skeleton infrastructure for server implementation
import workshop__POA
  
# Base component implementation
from Acspy.Servants.ACSComponent import ACSComponent
# Services provided by the container to the component
from Acspy.Servants.ContainerServices import ContainerServices
# Basic component lifecycle (initialize, execute, cleanUp and aboutToAbort methods)
from Acspy.Servants.ComponentLifecycle import ComponentLifecycle
  
class HelloComponentImpl(workshop__POA.HelloComponent, ACSComponent, ContainerServices, ComponentLifecycle):
    def __init__(self):
        ACSComponent.__init__(self)
        ContainerServices.__init__(self)
        self._logger = self.getLogger()
    def printHello(self):
        print("Just printing 'Hello World!'")
        return "Hello World!"

Compile component

make all install

Add component to CDB

vim $ACS_CDB/CDB/MACI/Components/Components.xml

Add the following item:

Components.xml
<e Name="HelloWorldPython"
   Code="ws.HelloComponentImpl"
   Type="IDL:acsws/workshop/HelloComponent:1.0"
   Container="aragornContainer" ImplLang="py" />

Testing

Create client python file:

cd ~/workspace
touch client.py
vim client.py

We fill it as follow:

~/workspace/client.py
from Acspy.Clients.SimpleClient import PySimpleClient
 
client = PySimpleClient()
component = client.getComponent("HelloWorldPython")

print(component.printHello())

Run component:

# in one terminal
acsStop
acsStart
# in a different terminal
acsStartContainer -py aragornContainer
# in a different terminal
python client.py

Example output:

...
Hello World!
...
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