Created question in FIWARE Q/A platform on 13-12-2017 at 11:12
Please, ANSWER this question AT https://stackoverflow.com/questions/47790426/how-to-remove-the-following-character-from-service-path

Question:
How to remove the following character "/" from service path

Description:
Good Morning!

Currently I have set up my structure in Fiware saving my historical records in MongoDB, for this I have been using Mlab as a hosting.
I attache the configuration file of my agent, the problem comes in that due to the mandatory character "/" of the service path I can not access the generated historical data, since it is a character not allowed for collections in MongoDB.

agent_1.conf

cygnus-ngsi.sources = http-source
cygnus-ngsi.sinks = mongo-sink
cygnus-ngsi.channels = mongo-channel

cygnus-ngsi.sources.http-source.channels = mongo-channel
cygnus-ngsi.sources.http-source.type = org.apache.flume.source.http.HTTPSource
cygnus-ngsi.sources.http-source.port = 5050
cygnus-ngsi.sources.http-source.handler = com.telefonica.iot.cygnus.handlers.NGSIRestHandler
cygnus-ngsi.sources.http-source.handler.notification_target = /notify
cygnus-ngsi.sources.http-source.handler.default_service = default
cygnus-ngsi.sources.http-source.handler.default_service_path = /sevilla
cygnus-ngsi.sources.http-source.handler.events_ttl = 2
cygnus-ngsi.sources.http-source.interceptors = ts
cygnus-ngsi.sources.http-source.interceptors.ts.type = timestamp

cygnus-ngsi.sinks.mongo-sink.type = com.telefonica.iot.cygnus.sinks.NGSIMongoSink
cygnus-ngsi.sinks.mongo-sink.channel = mongo-channel
cygnus-ngsi.sinks.mongo-sink.enable_encoding = false
cygnus-ngsi.sinks.mongo-sink.enable_grouping = false
cygnus-ngsi.sinks.mongo-sink.enable_name_mappings = false
cygnus-ngsi.sinks.mongo-sink.enable_lowercase = false
cygnus-ngsi.sinks.mongo-sink.data_model = dm-by-service-path
cygnus-ngsi.sinks.mongo-sink.attr_persistence = row
cygnus-ngsi.sinks.mongo-sink.mongo_hosts = ds******.mlab.com:35866
cygnus-ngsi.sinks.mongo-sink.mongo_username = my_user
cygnus-ngsi.sinks.mongo-sink.mongo_password = ********
cygnus-ngsi.sinks.mongo-sink.db_prefix = sth_
cygnus-ngsi.sinks.mongo-sink.collection_prefix = sth_
cygnus-ngsi.sinks.mongo-sink.batch_size = 1
cygnus-ngsi.sinks.mongo-sink.batch_timeout = 30
cygnus-ngsi.sinks.mongo-sink.batch_ttl = 10
cygnus-ngsi.sinks.mongo-sink.data_expiration = 0
cygnus-ngsi.sinks.mongo-sink.collections_size = 0
cygnus-ngsi.sinks.mongo-sink.max_documents = 0
cygnus-ngsi.sinks.mongo-sink.ignore_white_spaces = true

cygnus-ngsi.channels.mongo-channel.type = com.telefonica.iot.cygnus.channels.CygnusMemoryChannel
cygnus-ngsi.channels.mongo-channel.capacity = 1000
cygnus-ngsi.channels.mongo-channel.transactionCapacity = 100

Is there any way for Cygnus to remove the "/" character from the service path?

Error: http://www.subirimagenes.com/imagedata.php?url=http://s2.subirimagenes.com/imagen/9827048captura-de-pantalla.png

SOLUTION: You just have to change the enconding to true in the agent configuration

cygnus-ngsi.sinks.mongo-sink.enable_encoding = true

Thank you very much!