Module: Gemstash::Health

Defined in:
lib/gemstash/health.rb

Overview

This module contains the logic used to supply a health monitor for Gemstash. You can access the health monitor at the /health endpoint.

Constant Summary collapse

RackMiddleware = 
ServerHealthCheckRack::Middleware

Class Method Summary collapse

Class Method Details

.check_db_read ⇒ Object 



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# File 'lib/gemstash/health.rb', line 29

def self.check_db_read
  result = Gemstash::Env.current.db[:rubygems].where(name: "testing_db_read").count
  result.is_a?(Numeric)
end

.check_db_write ⇒ Object 



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# File 'lib/gemstash/health.rb', line 34

def self.check_db_write
  Gemstash::Env.current.db.transaction do
    Gemstash::Env.current.db[:rubygems].insert(name: "health_check:fake_gem_name",
                                               created_at: DateTime.now,
                                               updated_at: DateTime.now)
    # We don't want to actually write to the database
    raise Sequel::Rollback
  end

  true
end

.check_storage_read ⇒ Object 



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# File 'lib/gemstash/health.rb', line 16

def self.check_storage_read
  if check_storage_write
    content = Gemstash::Storage.for("health").resource("test").content(:example)
    content =~ /\Acontent-\d+\z/
  end
end

.check_storage_write ⇒ Object 



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# File 'lib/gemstash/health.rb', line 23

def self.check_storage_write
  resource = Gemstash::Storage.for("health").resource("test")
  resource.save(example: "content-#{Time.now.to_i}")
  true
end

.heartbeat ⇒ Object

This check can be used if you don’t want to read or write content during a health check.



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# File 'lib/gemstash/health.rb', line 12

def self.heartbeat
  true
end