Class: TinyPresto::Cluster

Inherits:
Object
  • Object
show all
Defined in:
lib/tiny-presto/cluster.rb

Overview

Represents a Presto cluster

Instance Method Summary collapse

Constructor Details

#initialize(image = 'trinodb/trino', tag = 'latest') ⇒ Cluster

Returns a new instance of Cluster.



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# File 'lib/tiny-presto/cluster.rb', line 9

def initialize(image = 'trinodb/trino', tag = 'latest')
  @tag = tag
  @image_name = "#{image}:#{@tag}"
end

Instance Method Details

#run ⇒ Object

Launch Presto cluster running on Docker container



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# File 'lib/tiny-presto/cluster.rb', line 15

def run
  # Ensure to pull the specified image
  Docker::Image.create('fromImage' => @image_name)
  @container = Docker::Container.create(
    'Image' => @image_name,
    'HostConfig' => {
      'PortBindings' => {
        '8080/tcp' => [
          {
            'HostPort' => '8080'
          }
        ]
      }
    }
  )
  @container.start
  @container
end

#stop ⇒ Object

Kill Presto cluster process



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# File 'lib/tiny-presto/cluster.rb', line 35

def stop
  @container.stop
end