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https://github.com/palkan/influxer
InfluxDB ActiveRecord-style
https://github.com/palkan/influxer
hacktoberfest influxdb rails ruby
Last synced: 24 days ago
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InfluxDB ActiveRecord-style
- Host: GitHub
- URL: https://github.com/palkan/influxer
- Owner: palkan
- License: mit
- Created: 2014-07-30T14:25:39.000Z (over 10 years ago)
- Default Branch: master
- Last Pushed: 2024-05-21T22:42:39.000Z (6 months ago)
- Last Synced: 2024-10-01T15:53:04.331Z (about 1 month ago)
- Topics: hacktoberfest, influxdb, rails, ruby
- Language: Ruby
- Homepage:
- Size: 258 KB
- Stars: 118
- Watchers: 5
- Forks: 20
- Open Issues: 2
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- License: LICENSE.txt
Awesome Lists containing this project
- awesome-influxdb - influxer - InfluxDB ActiveRecord-style (Queries / Other tools)
README
# Influxer
Influxer provides an ActiveRecord-style way to work with [InfluxDB](https://influxdb.com/) with many useful features, such as:
## Installation
Adding to a gem:
```ruby
# my-cool-gem.gemspec
Gem::Specification.new do |spec|
# ...
spec.add_dependency "influxer", ">= 1.2.0"
# ...
end
```
Or adding to your project:
```ruby
# Gemfile
gem "influxer", "~> 1.2"
```
## Usage
### Metrics classes
To query InfluxDB or write to it, you should define a metrics class first. Each metrics class represents a measurement/series (or multiple related measurements):
```ruby
class VisitsMetrics < Influxer::Metrics
# Define tags...
tags :account_id, :page_id
# ...and attributes
attributes :user_id, :browser
end
```
### Querying
Now you can use your metrics classes in a similar way to Active Record models to build queries. For example:
```ruby
VisitsMetrics.select(:account_id, :user_id).where(page_id: /^home\/.*/)
```
Influxer provides special query methods for dealing with time series:
- Group by time: `Metrics.time(:hour) => # select * ... group by time(1h)`.
- Select only points for the last hour/minute/whatever: `Metrics.past(:day) => # select * ... where time > now() - 1d`.
- Select only points since the specified time: `Metrics.since(Time.utc(2014,12,31)) => # select * ... where time > 1419984000s`.
- and more.
See [our Wiki](https://github.com/palkan/influxer/wiki/Query-methods) for more.
### Scopes support
You can define scopes to re-use query conditions:
```ruby
class Metrics < Influxer::Metrics
tags :account_id
attributes :value
default_scope -> { time(:hour).limit(1000) }
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
```
### Active Record integration
You can association metrics with Active Record models:
```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/ActiveRecord-integration).
## Contributing
Bug reports and pull requests are welcome on GitHub at [https://github.com/palkan/influxer](https://github.com/palkan/influxer).
## License
The gem is available as open source under the terms of the [MIT License](https://opensource.org/licenses/MIT).