Makefile
The Makefile is provided with the module generated from getTemplateForDirectory. In the case of Python server implementation, you need to configure the compilation and installation of a Python Package:
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PY_PACKAGES:=<PackageName> |
Implementation
The first thing needed to implement a server, is to import the required modules and classes:
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| language | py |
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| title | Python Imports |
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#Client stubs and definitions, such as structs, enums, etc.
import <Module>
#Skeleton infrastructure for server implementation
import <Module>__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
#Error definitions for catching exceptions
import ServiceErr
import <Interface>Err
#Error definitions for creating and raising exceptions
import ServiceErrImpl
import <Interface>ErrImpl |
...
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| language | py |
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| title | Python Component Interaction |
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#By Name
comp = self.getComponent("<Name>")
#By Interface. Must be at least one component configured as default!
comp = self.getDefaultComponent("IDL:alma/<Module>/<Interface>:1.0")
#Release Components
self.releaseComponent(comp.name()) |
For logging, as you saw in the class constructor, there's a facility provided by the component. To use it, simply do as follows:
...
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| language | py |
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| title | Python Error Handling |
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#For catching exceptions
except <Interface>Err.<ExceptionName>Ex as e:
#For raising exceptions
raise <Interface>ErrImpl.<ExceptionName>ExImpl().get<ExceptionName>Ex()
#For raising exceptions with parameters
err = <Interface>ErrImpl.<ExceptionName>ExImpl()
err.set<ParamName>(<Value>)
raise err.get<ExceptionName>Ex()
#For logging an error message from the exceptions
err = <Interface>ErrImpl.<ExceptionName>ExImpl()
err.log()
raise err.get<ExceptionName>Ex() |
Data types mapping:
To check how data types are mapped between IDL and implementation click here.
