Connecting with a URI causes error

[paulelliott]

When I set up my configuration with a URI, like for MongoHQ on Heroku, I get the following error:

The operation: # Moped::Protocol::Query
@Length=144
@request_id=5
@response_to=0
@op_code=2004
@flags=[:slave_ok]
@full_collection_name="..."
@Skip=0
@limit=0
@selector={"$query"=>{...}}
@fields=nil>
failed with error 13075: "db name can't be empty"

[durran]

Paul can you show the full uri in your config please?

[paulelliott]

mongodb://heroku:@subdomain.mongohq.com:99999/database-name

[paulelliott]

We did not change the URI environment variable value at all when we upgraded from mongoid 2. Everything was working fine under the previous version.

[durran]

Oh wait, I just realized you put this in the Moped repo... Are you trying to instantiate a Moped session with a URI? That is not allowed... Mongoid support's it in the mongoid.yml, but Moped's API take an array of host/port strings to it's constructor:

http://rdoc.info/github/mongoid/moped/Moped/Session

[paulelliott]

No, I am connecting through mongoid and the uri setting is in our mongoid.yml. I put it in here because the error referred to moped.

[durran]

Can you also show me the mongoid.yml please?

[paulelliott]

settings: &settings
  allow_dynamic_fields: true
  identity_map_enabled: false

development:
  sessions:
    default:
      <<: *settings
      hosts:
        - localhost:27017
      database: development

test:
  sessions:
    default:
      <<: *settings
      allow_dynamic_fields: false
      hosts:
        - localhost:27017
      database: test<%=ENV['TEST_ENV_NUMBER']%>

sandbox:
  sessions:
    default:
      <<: *settings
      uri: <%= ENV['MONGOHQ_URL'] %>

staging:
  sessions:
    default:
      <<: *settings
      uri: <%= ENV['MONGOHQ_URL'] %>

production:
  sessions:
    default:
      <<: *settings
      uri: <%= ENV['MONGOHQ_URL'] %>

[durran]

First, change this:

options: &settings
  allow_dynamic_fields: true
  identity_map_enabled: false

Then they are being extended in the wrong place... Should be:

development:
  <<: *settings
  sessions:
    default:
      hosts:
        - localhost:27017
      database: development

[durran]

And is your URI really malformed like the one you posted (ie the heroku: part)? Should be:

"mongodb://user:pass@host:port,host:port/database-name

[durran]

I've got specs all around this, just added more for when the URI is the default session and not the secondary.

mongoid/mongoid@fb2cae2

With the malformed URL I get a different error - just want confirmation that's what you've got but since my error is different I may need more information to reproduce.

[paulelliott]

No, it isn't malformed. When I de-identified it I replaced the password with <password> and it got stripped out.

I moved the settings extend to the correct place and it had no affect. It looks like the URI parsing is ignoring the database name at the end. I tried to explicitly set it in the mongoid.yml and got this error:

Both uri and standard configuration options defined for session: 'default'.

[durran]

Are there any special characters in your database name maybe? Here's the class that is parsing it - I'm wondering if we have a regex problem...

https://github.com/mongoid/mongoid/blob/master/lib/mongoid/sessions/mongo_uri.rb

[paulelliott]

There is a hyphen in it but that isn't breaking your regex. I just added a spec to test that specifically and it looks fine.

-- Paul

On Friday, June 1, 2012 at 9:16 AM, Durran Jordan wrote:

Are there any special characters in your database name maybe? Here's the class that is parsing it - I'm wondering if we have a regex problem...

https://github.com/mongoid/mongoid/blob/master/lib/mongoid/sessions/mongo_uri.rb

---

Reply to this email directly or view it on GitHub:
#10 (comment)

[hanshasselberg]

Ok, I can reproduce your problem.

[hanshasselberg]

See https://github.com/mongoid/mongoid/pull/2057.