Influxer

NOTE: Version 0.3.x supports InfluxDB >= 0.9.0. For InfluxDB 0.8.x use version 0.2.5.

NOTE: Influxer is Rails 4+ compatible! (Rails 3.2 support is still included but no longer required to pass all the tests).

Influxer provides an ActiveRecord-style way to work with InfluxDB with many useful features, such as:

• Familar query language (use select, where, not, group etc).
• Support for Regex conditions: where(page_id: /^home\/.*/) #=> select * ... where page_id=~/^home\/.*/.
• Special query methods for InfluxDB:
  • time - group by time (e.g. Metrics.time(:hour) => # select * ... group by time(1h));
  • past - get only points for last hour/minute/whatever (e.g. Metrics.past(:day) => # select * ... where time > now() - 1d);
  • since - get only points since date (e.g. Metrics.since(Time.utc(2014,12,31)) => # select * ... where time > 1419984000s);
  • merge - merge series.
• Scopes support

class Metrics < Influxer::Metrics default_scope -> { time(:hour).limit(1000) } tags :account_id attributes :value scope :unlimited, -> { limit(nil) } scope :by_account, ->(id) { where(account_id: id) if id.present? } end

Metrics.by_account(1)

=> select * from "metrics" group by time(1h) where account_id=1 limit 1000

Metrics.unlimited.by_account(1).time(:week)

=> select * from "metrics" group by time(1w) where account_id=1

- Integrate with your model:
```ruby
class UserVisits < Influxer::Metrics
end

class User < ActiveRecord::Base
has_metrics :visits
end

user = User.find(1)
user.visits.write(page_id: "home")
#=> < creates point {user_id: 1, page_id: 'home'} in 'user_visits' series >

user.visits.where(page_id: "home")
#=> select * from user_visits where page_id='home'

Find more on Wiki.