Created question in FIWARE Q/A platform on 05-06-2018 at 12:06
Please, ANSWER this question AT https://stackoverflow.com/questions/50698158/i-am-not-able-to-make-orion-communicate-with-cygnus

Question:
I am not able to make Orion communicate with Cygnus?

Description:
I am trying cygnus subscribe to orion. It is giving success, however, but on updating value to orion there is no notificaton being sent to cygnus. Tell me how can I check notification being received to cygnus? Moreover, Is there any method to check successful connection between orion and cygnus.
Configuration and logs of ORION & CYGNUS are below:

POST METHOD on orion for creating:(VERSION - v1 )

{
"contextElements": [
{
"type": "Room",
"isPattern": "false",
"id": "Room1",
"attributes": [

]
}
],
"updateAction": "UPDATE"
}

**SUBSCRIBING CYGNUS TO ORION ** is as follows:

{
"entities": [

],
"attributes": [
"temperature"
],
"reference": "http://cygnus:5050",
"duration": "P1M",
"notifyConditions": [

],
"throttling": "PT60S"
}

My agent.conf file in Cygnus is this :

1. ============================================
2. # OrionCKANSink configuration
3. # channel name from where to read notification events
   cygnusagent.sinks.ckan-sink.channel = ckan-channel
   #
4. # sink class, must not be changed
   cygnusagent.sinks.ckan-sink.type = com.telefonica.iot.cygnus.sinks.OrionCKANSink
   #
5. # true if the grouping feature is enabled for this sink, false otherwise
   cygnusagent.sinks.ckan-sink.enable_grouping = false
   #
6. # true if lower case is wanted to forced in all the element names, false otherwise
   cygnusagent.sinks.hdfs-sink.enable_lowercase = false
   #
7. # the CKAN API key to use
   cygnusagent.sinks.ckan-sink.api_key = 1ae97e2f-1589-4bdf-8a3f-b3683fc66a5a
   #
8. # the FQDN/IP address for the CKAN API endpoint
   cygnusagent.sinks.ckan-sink.ckan_host = demo.ckan.org
   #
9. # the port for the CKAN API endpoint
   cygnusagent.sinks.ckan-sink.ckan_port = 5000
   #
10. # Orion URL used to compose the resource URL with the convenience operation URL to query it
    cygnusagent.sinks.ckan-sink.orion_url = http://localhost:1026
11. # how the attributes are stored, either per row either per column (row, column)
    cygnusagent.sinks.ckan-sink.attr_persistence = column
    #
12. # enable SSL for secure Http transportation; 'true' or 'false'
    cygnusagent.sinks.ckan-sink.ssl = false
    #
13. # number of notifications to be included within a processing batch
    cygnusagent.sinks.ckan-sink.batch_size = 100
    #

1. # timeout for batch accumulation
   cygnusagent.sinks.ckan-sink.batch_timeout = 60
   #
2. # number of retries upon persistence error
   cygnusagent.sinks.ckan-sink.batch_ttl = 10

my Cygnus logs: CYGNUS VERSION - 1.7

/5/2018 3:37:07 PMtime=2018-06-05T10:07:07.572Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnus-ngsi | op=startAllComponents | msg=org.apache.flume.node.Application[145] : Starting Channel ckan-channel
6/5/2018 3:37:07 PMtime=2018-06-05T10:07:07.572Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnus-ngsi | op=startAllComponents | msg=org.apache.flume.node.Application[160] : Waiting for channel: ckan-channel to start. Sleeping for 500 ms
6/5/2018 3:37:08 PMtime=2018-06-05T10:07:08.139Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnus-ngsi | op=main | msg=com.telefonica.iot.cygnus.nodes.CygnusApplication[324] : Starting a Jetty server listening on 0.0.0.0:8081 (Management Interface)
6/5/2018 3:37:08 PMtime=2018-06-05T10:07:08.193Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnus-ngsi | op=register | msg=org.apache.flume.instrumentation.MonitoredCounterGroup[119] : Monitored counter group for type: CHANNEL, name: ckan-channel: Successfully registered new MBean.
6/5/2018 3:37:08 PMtime=2018-06-05T10:07:08.250Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnus-ngsi | op=start | msg=org.apache.flume.instrumentation.MonitoredCounterGroup[95] : Component type: CHANNEL, name: ckan-channel started
6/5/2018 3:37:08 PMtime=2018-06-05T10:07:08.251Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnus-ngsi | op=startAllComponents | msg=org.apache.flume.node.Application[173] : Starting Sink ckan-sink
6/5/2018 3:37:08 PMtime=2018-06-05T10:07:08.253Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnus-ngsi | op=startAllComponents | msg=org.apache.flume.node.Application[184] : Starting Source http-source
6/5/2018 3:37:08 PMtime=2018-06-05T10:07:08.392Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnus-ngsi | op=<init> | msg=com.telefonica.iot.cygnus.interceptors.CygnusGroupingRules[53] : Grouping rules read:
6/5/2018 3:37:08 PMtime=2018-06-05T10:07:08.561Z | lvl=WARN | corr= | trans= | srv= | subsrv= | comp=cygnus-ngsi | op=<init> | msg=com.telefonica.iot.cygnus.interceptors.CygnusGroupingRules[61] : Grouping rules syntax has errors. Details: null
6/5/2018 3:37:08 PMtime=2018-06-05T10:07:08.581Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnus-ngsi | op=<init> | msg=com.telefonica.iot.cygnus.interceptors.CygnusGroupingRules[53] : Grouping rules read:
6/5/2018 3:37:08 PMtime=2018-06-05T10:07:08.591Z | lvl=WARN | corr= | trans= | srv= | subsrv= | comp=cygnus-ngsi | op=<init> | msg=com.telefonica.iot.cygnus.interceptors.CygnusGroupingRules[61] : Grouping rules syntax has errors. Details: null
6/5/2018 3:37:09 PMtime=2018-06-05T10:07:09.917Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnus-ngsi | op=register | msg=org.apache.flume.instrumentation.MonitoredCounterGroup[119] : Monitored counter group for type: SOURCE, name: http-source: Successfully registered new MBean.
6/5/2018 3:37:09 PMtime=2018-06-05T10:07:09.917Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnus-ngsi | op=start | msg=org.apache.flume.instrumentation.MonitoredCounterGroup[95] : Component type: SOURCE, name: http-source started
6/5/2018 3:37:11 PMtime=2018-06-05T10:07:11.828Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnus-ngsi | op=<init> | msg=com.telefonica.iot.cygnus.backends.http.HttpClientFactory[81] : Setting max total connections (500)
6/5/2018 3:37:11 PMtime=2018-06-05T10:07:11.828Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnus-ngsi | op=<init> | msg=com.telefonica.iot.cygnus.backends.http.HttpClientFactory[82] : Setting default max connections per route (100)
6/5/2018 3:37:11 PMtime=2018-06-05T10:07:11.866Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnus-ngsi | op=<init> | msg=com.telefonica.iot.cygnus.backends.http.HttpClientFactory[81] : Setting max total connections (500)
6/5/2018 3:37:11 PMtime=2018-06-05T10:07:11.867Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnus-ngsi | op=<init> | msg=com.telefonica.iot.cygnus.backends.http.HttpClientFactory[82] : Setting default max connections per route (100)
6/5/2018 3:37:11 PMtime=2018-06-05T10:07:11.868Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnus-ngsi | op=start | msg=com.telefonica.iot.cygnus.sinks.NGSISink[354] : [ckan-sink] Startup completed