Created question in FIWARE Q/A platform on 31-10-2016 at 20:10
Please, ANSWER this question AT https://stackoverflow.com/questions/40349517/fiware-cygnus-cartodb-sinks-ngsisink-persistence-error-400-bad-request

Question:
FIWARE Cygnus -> cartodb sinks.NGSISink: Persistence error, 400 Bad request

Description:
I'm trying to connect cygnus (1.4.0_SNAPSHOT) to cartodb. I run it locally, and I use a script to send a notification to cygnus. The script runs Ok, but cygnus says:

ERROR sinks.NGSISink: Persistence error (The query 'INSERT INTO jcarneroatos.x002fpeoplelocation (recvtime,fiwareservicepath,entityid,entitytype,the_geom) VALUES ('2016-10-31T19:04:00.994Z','/peoplelocation','Person:1','Person',ST_SetSRID(ST_MakePoint({"coordinates":[-4.423032856,36.721290055]), 4326))' could not be executed. CartoDB response: 400 Bad Request)

Anyone knows what could be happening? Below I put my config files for information, thanks!

My username at CARTO is "jcarneroatos", and the domain is https://jcarneroatos.carto.com. This is the script I'm using to simulate the notification from Orion Context Broker:

#/bin/bash
HOST=localhost
PORT=5050
SERVICE=jcarneroatos
SUBSERVICE=/peoplelocation

#send notification
NOTIFICATION=$(\
curl http://$HOST:$PORT/notify \
-v -s -S \
--header "Content-Type: application/json; charset=utf-8" \
--header 'Accept: application/json' \
--header "Fiware-Service: $SERVICE" \
--header "Fiware-ServicePath: $SUBSERVICE" \
-d '
{
"contextResponses": [
{
"contextElement": {
"attributes": [
{
"metadatas": [

],
"name": "location",
"type": "geo:json",
"value":

}
],
"id": "Person:1",
"isPattern": "false",
"type": "Person"
},
"statusCode":

}
],
"originator": "localhost",
"subscriptionId": "58178396634ded66caac35b2"
}')
if [ -z "$NOTIFICATION" ]; then
echo "Ok"
else
echo $NOTIFICATION
fi

This is the structure of the dataset at cartodb:

x002fpeoplelocation
cartodb_id | the_geom | entityid | entitytype | fiwareservicepath | recvtime
number | geometry | string | string | string | date

This is the cygnus config file:

cygnusagent.sources = http-source
cygnusagent.sinks = cartodb-sink
cygnusagent.channels =cartodb-channel

cygnusagent.sources.http-source.channels = cartodb-channel
cygnusagent.sources.http-source.type = org.apache.flume.source.http.HTTPSource
cygnusagent.sources.http-source.port = 5050
cygnusagent.sources.http-source.handler = com.telefonica.iot.cygnus.handlers.NGSIRestHandler
cygnusagent.sources.http-source.handler.notification_target = /notify
cygnusagent.sources.http-source.handler.default_service = jcarneroatos
cygnusagent.sources.http-source.handler.default_service_path = /peoplelocation
cygnusagent.sources.http-source.interceptors = ts gi
cygnusagent.sources.http-source.interceptors.ts.type = timestamp
cygnusagent.sources.http-source.interceptors.gi.type = com.telefonica.iot.cygnus.interceptors.NGSIGroupingInterceptor$Builder
cygnusagent.sources.http-source.interceptors.gi.grouping_rules_conf_file = /home/cygnus/APACHE_FLUME_HOME/conf/grouping_rules.conf

cygnusagent.sinks.cartodb-sink.type = com.telefonica.iot.cygnus.sinks.NGSICartoDBSink
cygnusagent.sinks.cartodb-sink.channel = cartodb-channel
cygnusagent.sinks.cartodb-sink.enable_grouping = false
cygnusagent.sinks.cartodb-sink.enable_name_mappings = false
cygnusagent.sinks.cartodb-sink.enable_lowercase = false
cygnusagent.sinks.cartodb-sink.data_model = dm-by-service-path
cygnusagent.sinks.cartodb-sink.keys_conf_file = /home/cygnus/APACHE_FLUME_HOME/conf/cartodb_keys.conf
cygnusagent.sinks.cartodb-sink.flip_coordinates = false
cygnusagent.sinks.cartodb-sink.enable_raw = true
cygnusagent.sinks.cartodb-sink.enable_distance = false
cygnusagent.sinks.cartodb-sink.batch_size = 100
cygnusagent.sinks.cartodb-sink.batch_timeout = 30
cygnusagent.sinks.cartodb-sink.batch_ttl = 10
cygnusagent.sinks.cartodb-sink.backend.max_conns = 500
cygnusagent.sinks.cartodb-sink.backend.max_conns_per_route = 100

cygnusagent.channels.cartodb-channel.type = memory
cygnusagent.channels.cartodb-channel.capacity = 1000
cygnusagent.channels.cartodb-channel.transactionCapacity = 100

And finally the cartodb_keys.conf file (without key):

{
"cartodb_keys": [

]
}

Update:
After executing Cygnus in DEBUG mode and check the logs, it seems that CARTO is returning:

{"error":["syntax error at or near \"

This the complete log: http://pastebin.com/p9VyUU8n