Module: Goalkeeper

Defined in:
lib/goalkeeper.rb,
lib/goalkeeper/set.rb,
lib/goalkeeper/goal.rb,
lib/goalkeeper/version.rb

Overview

Goalkeeper provides methods to track if specific events(Goals) have been completed(met).

Its goes likes this..

Lets ensure we wakeup New Years Day 2020. The goal will be called ‘wakeup:2020-01-01’

g = Goalkeeper::Goal.new('wakeup:2020-01-01')
g.met? #=> false

Time flies… it is New Years Day 2020.

g.met! # or Goalkeeper.met!('wakeup:2020-01-01')
g.met? #=> true
g.met_at #=> 2020-01-01 05:01:31 -0500

Now if our application checks our goal, it will be met.

Goalkeeper::Goal.new('wakeup:2020-01-01').met? #=> true
Goalkeeper.met?('wakeup:2020-01-01') #=> true

Note: Once a Goal is ‘met’ the ‘met_at’ timestamp will not change, unless ‘clear!’ is called.

We are probably only interested in this goal being complete for a limited time, so it will expire and be removed from Redis.

g.ttl #=> 86400 (1 day)

If you need to reference the Redis key

g.key #=> Goalkeeper:wakeup:2020-01-01

Finally clear the Goal is simple

g.clear!

Sets

Perhaps you have a series of Goals you want to track, and see if they all have been met, or not.

set = Goalkeeper::Set.new
set.add('goal1').add('goal2')
set.met? #=> false

Lets have 1 goal met:

Goalkeeper.met!('goal1')

But our set is not met yet

set.met? #=> false

See which goals are met, or unmet

set.met #=> [#<Goalkeeper::Goal @label="goal1">]
set.unmet #=> [#<Goalkeeper::Goal @label="goal2">]

Lets complete our set.

Goalkeeper.met!('goal1')
set.met? #=> true

See the time the final goal was met

set.met_at #=> 2015-01-01 08:02:15 -0500

Customization

Customize the redis client by setting it in your application

Goalkeeper.redis = your_redis_client

Each record has a default expiration of 24 hours, but this can be modified.

Goalkeeper.expiration = number_of_seconds

Redis keys are stored under the default namespace of “Goalkeeper:”. The namespace can be configured:

Goalkeeper.namespace = string

Defined Under Namespace

Classes: Goal, Set

Constant Summary collapse

VERSION = 
"0.3.2.2"

Class Method Summary collapse

Class Method Details

.expiration ⇒ Object

The TTL set for each met Goal record created in Redis Default is 24 hours



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# File 'lib/goalkeeper.rb', line 98

def self.expiration
  @expiration ||= 24 * 60 * 60
end

.expiration=(number_of_seconds) ⇒ Object

Overwrite the default expiration



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# File 'lib/goalkeeper.rb', line 103

def self.expiration=(number_of_seconds)
  @expiration = number_of_seconds
end

.met!(*label) ⇒ Object

Creates a persistent Goal market with the given label.



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# File 'lib/goalkeeper.rb', line 88

def self.met!(*label)
  Goal.new(*label).met!
end

.met?(*label) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/goalkeeper.rb', line 92

def self.met?(*label)
  Goal.new(*label).met?
end

.namespace ⇒ Object 



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# File 'lib/goalkeeper.rb', line 107

def self.namespace
  @namespace ||= "Goalkeeper"
end

.namespace=(ns) ⇒ Object 



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# File 'lib/goalkeeper.rb', line 111

def self.namespace=(ns)
  @namespace = ns
end

.redis ⇒ Object 



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# File 'lib/goalkeeper.rb', line 83

def self.redis
  @redis ||= Redis.new
end

.redis=(redis) ⇒ Object

Set the Redis client to a non default setting



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# File 'lib/goalkeeper.rb', line 79

def self.redis=(redis)
  @redis = redis
end