Introduction
There are several types of components in the ALMA Common Software and they're useful in different contexts. The list of component types is the following:
- Component
- Default Component
- Non Sticky Component
Collocated Component
Dynamic Component
AutoStart Component
Immortal Component
- Delayed Deactivation Component
Each of the components type differentiates of each other in one or more of the following areas:
- Configuration
- Request Procedure
- Lifecycle Behavior
- Scope
- Describe Component Types
- Particularities on the 3 areas for each component type
- Duration: 10 minutes
Hands-On Exercise
Component
Configuration
<e Name="CLOCKTEST"
Code="acsclock"
Type="IDL:alma/acstime/Clock:1.0"
Container="bilboContainer"
ImplLang="cpp"
KeepAliveTime="0"
Autostart="false"
Default="false"
>
</e>
Request (Python)
from Acspy.Clients.SimpleClient import PySimpleClient
client = PySimpleClient()
compName = 'CLOCKTEST'
compInfo = client.availableComponents(compName)
if len(compInfo) != 1:
print("Problem with the component: there should be one definition.")
compInfo = compInfo[0]
if not compInfo.reference is None:
print("Problem with the component: it is already active.")
if len(compInfo.clients) > 0:
print("Problem with the component: someone already has a reference to it.")
clock = client.getComponent(compName)
compInfo = client.availableComponents(compName)[0]
if compInfo.reference is None:
print("Problem with the component: it should have been activated.")
if len(compInfo.clients) != 1:
print("Problem with the component: it has not been activated or more than one component/client have a reference to it.")
client.releaseComponent(clock.name)
compInfo = client.availableComponents(compName)[0]
if not compInfo.reference is None:
print("Problem with the component: it should have been deactivated.")
if len(compInfo.clients) > 0:
print("Problem with the component: someone still has a reference to it.")
Default Component
Configuration
<e Name="CLOCKTEST"
Code="acsclock"
Type="IDL:alma/acstime/Clock:1.0"
Container="bilboContainer"
ImplLang="cpp"
KeepAliveTime="0"
Autostart="false"
Default="true"
>
</e>
Request (Python)
from Acspy.Clients.SimpleClient import PySimpleClient
client = PySimpleClient()
compName = 'CLOCKTEST'
compInfo = client.availableComponents(compName)
if len(compInfo) != 1:
print("Problem with the component: there should be one definition.")
compInfo = compInfo[0]
if not compInfo.reference is None:
print("Problem with the component: it is already active.")
if len(compInfo.clients) > 0:
print("Problem with the component: someone already has a reference to it.")
clock = client.getDefaultComponent('IDL:alma/acstime/Clock:1.0')
compInfo = client.availableComponents(compName)[0]
if compInfo.reference is None:
print("Problem with the component: it should have been activated.")
if len(compInfo.clients) != 1:
print("Problem with the component: it has not been activated or more than one component/client have a reference to it.")
client.releaseComponent(clock.name)
compInfo = client.availableComponents(compName)[0]
if not compInfo.reference is None:
print("Problem with the component: it should have been deactivated.")
if len(compInfo.clients) > 0:
print("Problem with the component: someone still has a reference to it.")
Non Sticky Component
Configuration
<e Name="CLOCKTEST"
Code="acsclock"
Type="IDL:alma/acstime/Clock:1.0"
Container="bilboContainer"
ImplLang="cpp"
KeepAliveTime="0"
Autostart="false"
Default="false"
>
</e>
Request (Python)
from Acspy.Clients.SimpleClient import PySimpleClient
client = PySimpleClient()
compName = 'CLOCKTEST'
compInfo = client.availableComponents(compName)
if len(compInfo) != 1:
print("Problem with the component: there should be one definition.")
compInfo = compInfo[0]
if not compInfo.reference is None:
print("Problem with the component: it is already active.")
if len(compInfo.clients) > 0:
print("Problem with the component: someone already has a reference to it.")
tmp = client.getComponent(compName)
compInfo = client.availableComponents(compName)[0]
if compInfo.reference is None:
print("Problem with the component: it should have been activated.")
if len(compInfo.clients) != 1:
print("Problem with the component: it has not been activated or more than one component/client have a reference to it.")
clock = client.getComponentNonSticky(compName)
compInfo = client.availableComponents(compName)[0]
if len(compInfo.clients) != 1:
print("Problem with the component: it has not been activated or more than one component/client have a reference to it.")
client.releaseComponent(tmp.name)
compInfo = client.availableComponents(compName)[0]
if not compInfo.reference is None:
print("Problem with the component: it should have been deactivated.")
if len(compInfo.clients) > 0:
print("Problem with the component: someone still has a reference to it.")
Collocated Component
Configuration
<e Name="CLOCKTEST"
Code="acsclock"
Type="IDL:alma/acstime/Clock:1.0"
Container="bilboContainer"
ImplLang="cpp"
KeepAliveTime="0"
Autostart="false"
Default="false"
>
</e>
Request (Python)
from Acspy.Clients.SimpleClient import PySimpleClient
import maci
client = PySimpleClient()
compSpec = maci.ComponentSpec("CLOCKTEST", "*", "*", "*")
comp = client.getCollocatedComp(compSpec, False, "CLOCKTEST")
Dynamic Component
Configuration
<e Name="*"
Code="acsclock"
Type="IDL:alma/acstime/Clock:1.0"
Container="*"
ImplLang="cpp"
KeepAliveTime="0"
Autostart="false"
Default="false"
>
</e>
Request (Python)
from Acspy.Clients.SimpleClient import PySimpleClient
client = PySimpleClient()
compName = 'CLOCKTEST'
compType = 'IDL:alma/acstime/Clock:1.0'
container = bilboContainer
compInfo = client.availableComponents(compName)
if len(compInfo) != 0:
print("Problem with the component: there shouldn't be any definition.")
clock = client.getDynamicComponent(compName, '*', compType, container)
compInfo = client.availableComponents(compName)
if len(compInfo) != 1:
print("Problem with the component: there should be one definition.")
compInfo = compInfo[0]
if compInfo.reference is None:
print("Problem with the component: it should have been activated.")
if len(compInfo.clients) != 1:
print("Problem with the component: it has not been activated or more than one component/client have a reference to it.")
client.releaseComponent(clock.name)
compInfo = client.availableComponents(compName)[0]
if not compInfo.reference is None:
print("Problem with the component: it should have been deactivated.")
if len(compInfo.clients) > 0:
print("Problem with the component: someone still has a reference to it.")
Auto Start Component
Configuration
<e Name="CLOCKTEST"
Code="acsclock"
Type="IDL:alma/acstime/Clock:1.0"
Container="bilboContainer"
ImplLang="cpp"
KeepAliveTime="0"
Autostart="true"
Default="false"
>
</e>
Request (Python)
from Acspy.Clients.SimpleClient import PySimpleClient
client = PySimpleClient()
compName = 'CLOCKTEST'
compInfo = client.availableComponents(compname)
if len(compInfo) != 1:
print("Problem with the component: there should be one definition.")
compInfo = compInfo[0]
if compInfo.reference is None:
print("Problem with the component: It should be already active.")
if len(compInfo.clients) != 1:
print("Problem with the component: There should be only one reference to it.")
if compInfo.clients[0] != 83886080:
print("Problem with the component: The manager should have a reference to it.")
clock = client.getComponent(compName)
compInfo = client.availableComponents(compName)[0]
if len(compInfo.clients) != 2:
print("Problem with the component: There should be 2 references; 1 from manager and the other from our client.")
client.releaseComponent(clock.name)
compInfo = c.availableComponents(compName)[0]
if compInfo.reference is None:
print("Problem with the component: It shouldn't be deactivated.")
if len(compInfo.clients) != 1:
print("Problem with the component: Only the Manager should have a reference to it.")
Immortal Component
Configuration
<e Name="CLOCKTEST"
Code="acsclock"
Type="IDL:alma/acstime/Clock:1.0"
Container="bilboContainer"
ImplLang="cpp"
KeepAliveTime="-1"
Autostart="false"
Default="false"
>
</e>
Request (Python)
from Acspy.Clients.SimpleClient import PySimpleClient
client = PySimpleClient()
compName = 'CLOCKTEST'
compInfo = c.availableComponents(compName)
if len(compInfo) != 1:
print("Problem with the component: there should be one definition.")
compInfo = compInfo[0]
if not compInfo.reference is None:
print("Problem with the component: it is already active.")
if len(compInfo.clients) > 0:
print("Problem with the component: someone already has a reference to it.")
clock = client.getComponent()
compInfo = c.availableComponents(compName)[0]
if compInfo.reference is None:
print("Problem with the component: it should have been activated.")
if len(compInfo.clients) != 2:
print("Problem with the component: There should be 2 references; 1 from manager and the other from our client.")
client.releaseComponent(clock.name)
compInfo = c.availableComponents(compName)[0]
if compInfo.reference is None:
print("Problem with the component: It shouldn't be deactivated.")
if len(compInfo.clients) != 1:
print("Problem with the component: Only the Manager should have a reference to it.")
Delayed Deactivation Component
Configuration
<e Name="CLOCKTEST"
Code="acsclock"
Type="IDL:alma/acstime/Clock:1.0"
Container="bilboContainer"
ImplLang="cpp"
KeepAliveTime="10"
Autostart="false"
Default="false"
>
</e>
Request (Python)
import time
from Acspy.Clients.SimpleClient import PySimpleClient
client = PySimpleClient()
compName = 'CLOCKTEST'
compInfo = c.availableComponents(compName)
if len(compInfo) != 1:
print("Problem with the component: there should be one definition.")
compInfo = compInfo[0]
if not compInfo.reference is None:
print("Problem with the component: it is already active.")
if len(compInfo.clients) > 0:
print("Problem with the component: someone already has a reference to it.")
clock = client.getComponent(compName)
compInfo = c.availableComponents(compName)[0]
if compInfo.reference is None:
print("Problem with the component: it should have been activated.")
if len(compInfo.clients) != 2:
print("Problem with the component: There should be 2 references; 1 from manager and the other from our client.")
client.releaseComponent(clock.name)
compInfo = c.availableComponents(compName)[0]
if compInfo.reference is None:
print("Problem with the component: It shouldn't be deactivated.")
if len(compInfo.clients) != 1:
print("Problem with the component: Only the Manager should have a reference to it.")
time.sleep(20)
compInfo = c.availableComponents(compName)[0]
if not compInfo.reference is None:
print("Problem with the component: it should have been deactivated.")
if len(compInfo.clients) > 0:
print("Problem with the component: someone still has a reference to it.")
Discussion
- New Component Types Ideas?
- Improvements