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## Influxer

**NOTE**: Version 0.3.x supports InfluxDB >= 0.9.0. For InfluxDB 0.8.x use [version 0.2.5](https://github.com/palkan/influxer/tree/0.2.5).

**NOTE**: Influxer is Rails 4+ compatible!

Influxer provides an ActiveRecord-style way to work with [InfluxDB](https://influxdb.com/) 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
  ```ruby
  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](https://github.com/palkan/influxer/wiki).