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-Enabler:Cygnus
Description
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?
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!
Issue Links
- is blocked by
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HELP-13045
[Fiware-lab-help] How to remove the following character “/” from service path
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- Closed
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Activity
2018-01-12 19:48|CREATED monitor | # answers= 0, accepted answer= False
Hello,
The question was answered by the same user that creates the ticket franciclogreen and complemented by frb, the solution was to change the encoding to true in the agent configuration and the explanation of why have to do that is:
The slash is forbidden in MongoDB database names, that's why Cygnus composes database names from the FIWARE service (which does not contain any slash). On the other hand, the slash is not forbidden in MongoDB collection names, which are composed by Cygnus based on the FIWARE service path (which contains a initial slash). Being said that, if your viewer has any problem with MongoDB collections containing the slash, you are right the only option for you is to enable the encoding of non ASCII characters through enable_encoding=true configuration.