I am not able to make Orion communicate with Cygnus?

Question

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": [
                {
                    "name": "temperature",
                    "type": "float",
                    "value": "39.5"
                }
            ]
        }
    ],
    "updateAction": "UPDATE"
} 

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

{
    "entities": [
        {
            "type": "Room",
            "isPattern": "false",
            "id": "Room1"
        }
    ],
    "attributes": [
        "temperature"
    ],
    "reference": "http://cygnus:5050",
    "duration": "P1M",
    "notifyConditions": [
        {
            "type": "ONCHANGE",
            "condValues": [
                "temperature"
            ]
        }
    ],
    "throttling": "PT60S"
}

My agent.conf file in Cygnus is this :

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

# # timeout for batch accumulation
cygnusagent.sinks.ckan-sink.batch_timeout = 60
#
# # 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

-------------------------------------------------------------

For the sake of testing purpose, I followed the below link

After,configuring a test agent on cygnus:

http://fiware-cygnus.readthedocs.io/en/1.2.2/cygnus-ngsi/quick_start_guide/index.html



/opt/fiware-cygnus/cygnus-ngsi/src/main/resources/cygnus-flume-ng agent --conf /opt/apache-flume/conf/ -f /opt/apache-flume/conf/agent_test.conf -n cygnusagent -Dflume.root.logger=INFO,console

Warning: JAVA_HOME is not set!
+ exec /usr/bin/java -Xmx20m -Dflume.root.logger=INFO,console -cp '/opt/apache-flume/conf:/opt/apache-flume/lib/*:/opt/apache-flume/plugins.d/cygnus/lib/*:/opt/apache-flume/plugins.d/cygnus/libext/*' -Djava.library.path= com.telefonica.iot.cygnus.nodes.CygnusApplication -f /opt/apache-flume/conf/agent_test.conf -n cygnusagent
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/opt/apache-flume/lib/slf4j-log4j12-1.6.1.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/opt/apache-flume/plugins.d/cygnus/lib/cygnus-ngsi-1.7.0-jar-with-dependencies.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/opt/apache-flume/plugins.d/cygnus/libext/cygnus-common-1.7.0-jar-with-dependencies.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
time=2018-05-05T08:21:21.573Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp= | op=main | msg=com.telefonica.iot.cygnus.nodes.CygnusApplication[189] : Starting Cygnus, version 1.7.0.9df0d4d857488c4dd72e9c5dfd2b5e41083b64b9
time=2018-05-05T08:21:21.792Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=main | msg=com.telefonica.iot.cygnus.nodes.CygnusApplication[312] : Waiting for valid Flume components references...
time=2018-05-05T08:21:21.793Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=start | msg=org.apache.flume.node.PollingPropertiesFileConfigurationProvider[61] : Configuration provider starting
time=2018-05-05T08:21:21.799Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=run | msg=org.apache.flume.node.PollingPropertiesFileConfigurationProvider$FileWatcherRunnable[133] : Reloading configuration file:/opt/apache-flume/conf/agent_test.conf
time=2018-05-05T08:21:21.823Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:test-sink
time=2018-05-05T08:21:21.824Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:test_sink
time=2018-05-05T08:21:21.824Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:test-sink
time=2018-05-05T08:21:21.824Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:test-sink
time=2018-05-05T08:21:21.824Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[930] : Added sinks: test-sink Agent: cygnusagent
time=2018-05-05T08:21:21.837Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=validateConfiguration | msg=org.apache.flume.conf.FlumeConfiguration[140] : Post-validation flume configuration contains configuration for agents: [cygnusagent]
time=2018-05-05T08:21:21.838Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=loadChannels | msg=org.apache.flume.node.AbstractConfigurationProvider[150] : Creating channels
time=2018-05-05T08:21:21.848Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=create | msg=org.apache.flume.channel.DefaultChannelFactory[40] : Creating instance of channel test-channel type memory
time=2018-05-05T08:21:21.854Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=loadChannels | msg=org.apache.flume.node.AbstractConfigurationProvider[205] : Created channel test-channel
time=2018-05-05T08:21:21.855Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=create | msg=org.apache.flume.source.DefaultSourceFactory[39] : Creating instance of source http-source, type org.apache.flume.source.http.HTTPSource
time=2018-05-05T08:21:21.926Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=configure | msg=com.telefonica.iot.cygnus.handlers.NGSIRestHandler[156] : [NGSIRestHandler] Startup completed
time=2018-05-05T08:21:21.939Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=create | msg=org.apache.flume.sink.DefaultSinkFactory[40] : Creating instance of sink: test-sink, type: com.telefonica.iot.cygnus.sinks.NGSITestSink
time=2018-05-05T08:21:21.948Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=getConfiguration | msg=org.apache.flume.node.AbstractConfigurationProvider[119] : Channel test-channel connected to [http-source, test-sink]
time=2018-05-05T08:21:21.962Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=startAllComponents | msg=org.apache.flume.node.Application[138] : Starting new configuration:{ sourceRunners:{http-source=EventDrivenSourceRunner: { source:org.apache.flume.source.http.HTTPSource{name:http-source,state:IDLE} }} sinkRunners:{test-sink=SinkRunner: { policy:org.apache.flume.sink.DefaultSinkProcessor@56bb46b7 counterGroup:{ name:null counters:{} } }} channels:{test-channel=org.apache.flume.channel.MemoryChannel{name: test-channel}} }
time=2018-05-05T08:21:21.962Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=startAllComponents | msg=org.apache.flume.node.Application[145] : Starting Channel test-channel
time=2018-05-05T08:21:21.962Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=startAllComponents | msg=org.apache.flume.node.Application[160] : Waiting for channel: test-channel to start. Sleeping for 500 ms
time=2018-05-05T08:21:22.010Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=register | msg=org.apache.flume.instrumentation.MonitoredCounterGroup[119] : Monitored counter group for type: CHANNEL, name: test-channel: Successfully registered new MBean.
time=2018-05-05T08:21:22.010Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=start | msg=org.apache.flume.instrumentation.MonitoredCounterGroup[95] : Component type: CHANNEL, name: test-channel started
time=2018-05-05T08:21:22.463Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=startAllComponents | msg=org.apache.flume.node.Application[173] : Starting Sink test-sink
time=2018-05-05T08:21:22.464Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=startAllComponents | msg=org.apache.flume.node.Application[184] : Starting Source http-source
time=2018-05-05T08:21:22.466Z | lvl=WARN | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=<init> | msg=com.telefonica.iot.cygnus.interceptors.CygnusGroupingRules[49] : No grouping rules have been read. Details: /Applications/apache-flume-1.4.0-bin/conf/grouping_rules.conf (No such file or directory)
time=2018-05-05T08:21:22.467Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=start | msg=com.telefonica.iot.cygnus.sinks.NGSISink[354] : [test-sink] Startup completed
time=2018-05-05T08:21:22.476Z | lvl=WARN | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=<init> | msg=com.telefonica.iot.cygnus.interceptors.CygnusGroupingRules[49] : No grouping rules have been read. Details: /Applications/apache-flume-1.4.0-bin/conf/grouping_rules.conf (No such file or directory)
time=2018-05-05T08:21:22.626Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=register | msg=org.apache.flume.instrumentation.MonitoredCounterGroup[119] : Monitored counter group for type: SOURCE, name: http-source: Successfully registered new MBean.
time=2018-05-05T08:21:22.627Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=start | msg=org.apache.flume.instrumentation.MonitoredCounterGroup[95] : Component type: SOURCE, name: http-source started
time=2018-05-05T08:21:22.794Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=main | msg=com.telefonica.iot.cygnus.nodes.CygnusApplication[324] : Starting a Jetty server listening on 0.0.0.0:8081 (Management Interface)
time=2018-05-05T08:21:52.477Z | lvl=WARN | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=<init> | msg=com.telefonica.iot.cygnus.interceptors.CygnusGroupingRules[49] : No grouping rules have been read. Details: /Applications/apache-flume-1.4.0-bin/conf/grouping_rules.conf (No such file or directory)

and now,if I execute this file notification.sh

URL=$1

curl $URL -v -s -S --header 'Content-Type: application/json' --header 'Accept: application/json' --header "Fiware-Service: qsg" --header "Fiware-ServicePath: testsink" -d @- <<EOF
{
    "subscriptionId" : "51c0ac9ed714fb3b37d7d5a8",
    "originator" : "localhost",
    "contextResponses" : [
        {
            "contextElement" : {
                "attributes" : [
                    {
                        "name" : "temperature",
                        "type" : "float",
                        "value" : "26.5"
                    }
                ],
                "type" : "Room",
                "isPattern" : "false",
                "id" : "Room1"
            },
            "statusCode" : {
                "code" : "200",
                "reasonPhrase" : "OK"
            }
        }
    ]
}
EOF

I recieve a response :

* Connected to CYGNUS_IP (CYGNUS_IP) port 5053 (#0)
> POST /notify HTTP/1.1
> User-Agent: curl/7.29.0
> Host: CYGNUS_IP:5053
> Content-Type: application/json
> Accept: application/json
> Fiware-Service: qsg
> Fiware-ServicePath: testsink
> Content-Length: 615
>
* upload completely sent off: 615 out of 615 bytes
* Recv failure: Connection reset by peer
* Closing connection 0
curl: (56) Recv failure: Connection reset by peer

Answer 1

You can do the following to know if your subscription is being activated (thus, ensuring that Orion is sending notifications to Cygnus):

• GET /v2/subscriptions if you don't know the id of the subscription. In this case, you will get the information for all subscriptions and you have to locate the one being used for Cygnus.
• GET /v2/subscriptions/<subscriptionId if you know the subscription ID.

The following fields in the response could help (see NGSIv2 specification for details):

• status : Either active (for active subscriptions) or inactive (for inactive subscriptions) [..] . Also, for subscriptions experiencing problems with notifications, the status is set to failed . As soon as the notifications start working again, the status is changed back to active .

• timesSent (not editable, only present in GET operations): Number of notifications sent due to this subscription.

• lastNotification (not editable, only present in GET operations): Last notification timestamp in ISO8601 format.

• lastFailure (not editable, only present in GET operations): Last failure timestamp in ISO8601 format. Not present if subscription has never had a problem with notifications.

• lastSuccess (not editable, only present in GET operations): Timestamp in ISO8601 format for last successful notification. Not present if subscription has never had a successful notification.

So, if everything goes ok timesSent should be incresing each update, status should not be failed and lastNotification should be equal to lastSuccess .