Details
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Type: Monitor
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Status: Closed
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Priority: Major
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Resolution: Done
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Affects Version/s: None
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Fix Version/s: 2021
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Component/s: FIWARE-TECH-HELP
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Labels:
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HD-Chapter:Data
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HD-Enabler:Orion
Description
Created question in FIWARE Q/A platform on 17-05-2016 at 15:05
Please, ANSWER this question AT https://stackoverflow.com/questions/37277048/how-to-make-an-orion-ngsiv2-subscription-that-notifies-cygnus-in-ngsiv1
Question:
How to make an Orion NGSIv2 subscription that notifies cygnus in NGSIv1?
Description:
EDIT 2
curl --include \
--header 'Content-Type: application/json' \
--request POST \
--data-binary '{
"description": "Day subscription",
"subject": {
"entities": [
],
"condition": {
"attrs": [
"Title",
"dFlag"
],
"expression":
}
},
"notification": {
"http":
,
"attrs": [
"Title",
"dFlag"
],
"attrsFormat":"legacy"
}
}' \
'http://localhost:1026/v2/subscriptions'
In Orion the subscription register ok (thanks for the tips in the comments) but I'm having the same issue as said in here even though I use "attrsFormat":"legacy"
I'm making something wrong? why orion is not using ngsiv1 to send the notification to cygnus?
The cygnus error trace.
Cygnus shows orion is responding this:
{
"subscriptionId": "574315e77775f31b8d3da719",
"data": [{
"id": "es-leon-0",
"type": "Event",
"Title": {
"type": "none",
"value": "pepe",
"metadata": {}
},
"dFlag": {
"type": "text",
"value": "1",
"metadata": {}
}
}]
}
When it has to respond the lines below to be in ngsiv1:
{
"subscriptionId": "5743178d7775f31b8d3da71a",
"originator": "localhost",
"contextResponses": [{
"contextElement": {
"type": "Event",
"isPattern": "false",
"id": "es-leon-0",
"attributes": [
,
{ "name": "dFlag", "type": "text", "value": "1" }]
},
"statusCode":
}]
}
Original Question
As said in other question :
EDIT: note also that you can use NGSIv2 to create/update entities at
Orion and have notifications in NGSIv1 if you:
Create the subscription using NGSIv1 operations
Create the subscription using NGSIv2 operations with attrsFormat equal to legacy.
Have a look to more detailed information here.
So I made up this subscription:
curl --include \
--header 'Content-Type: application/json' \
--request POST \
--data-binary '{
"description": "Day subscription",
"subject": {
"entities": [
],
"condition": {
"attributes": [
"Title",
"dFlag"
],
"expression":
}
},
"notification":
}' \
'http://localhost:1026/v1/subscriptions'
but orion don't let me register it throwing this error:
HTTP/1.1 400 Bad Request
Connection: Keep-Alive
Content-Length: 67
Content-Type: application/json
Fiware-Correlator: 2ecdfc74-1c2f-11e6-82d7-000d3a23bf27
Date: Tue, 17 May 2016 12:59:25 GMT
Is this the way to use legacy attributes so it can work with cygnus with NGSIv2?
Thanks for the help.
EDIT 1:
Following the answer the subscription should be like this: Right?
curl --include \
--header 'Content-Type: application/json' \
--request POST \
--data-binary '{
"description": "Day subscription",
"subject": {
"entities": [
],
"condition": {
"attributes": [
"Title",
"dFlag"
],
"expression":
}
},
"notification": {
"http":
,
"attributes": [
"Title",
"dFlag"
],
"attrsFormat":"legacy"
}
}' \
'http://localhost:1026/v2/subscriptions'
But I'm still getting an error:
HTTP/1.1 100 Continue
HTTP/1.1 400 Bad Request
Connection: Keep-Alive
Content-Length: 67
Content-Type: application/json
Fiware-Correlator: 60a0a1d2-1ddf-11e6-8bd6-000d3a23bf27
Date: Thu, 19 May 2016 16:33:11 GMT
2017-05-22 15:14|CREATED monitor | # answers= 1, accepted answer= True