Class: OpenStack::Compute::Metadata

Inherits:
Object
  • Object
show all
Defined in:
lib/openstack/compute/metadata.rb

Instance Method Summary collapse

Constructor Details

#initialize(connection, parent_url, metadata = nil) ⇒ Metadata

Returns a new instance of Metadata.



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# File 'lib/openstack/compute/metadata.rb', line 6

def initialize(connection, parent_url, metadata=nil)
  @connection = connection
  @base_url = "#{parent_url}/metadata"
  @metadata = metadata
end

Instance Method Details

#[](key) ⇒ Object 



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# File 'lib/openstack/compute/metadata.rb', line 12

def [](key)
  refresh if @metadata.nil?
  @metadata[key]
end

#[]=(key, value) ⇒ Object 



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# File 'lib/openstack/compute/metadata.rb', line 17

def []=(key, value)
  @metadata = {} if @metadata.nil?
  @metadata[key] = value
end

#clear ⇒ Object 



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# File 'lib/openstack/compute/metadata.rb', line 99

def clear
  if @metadata.nil?
    @metadata = {}
  else
    @metadata.clear
  end
end

#clear! ⇒ Object 



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# File 'lib/openstack/compute/metadata.rb', line 107

def clear!
  clear
  save
end

#delete(keys) ⇒ Object 



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# File 'lib/openstack/compute/metadata.rb', line 83

def delete(keys)
  return if @metadata.nil?
  keys = [keys] unless keys.is_a? Array
  keys.each { |key|
    @metadata.delete(key)
  }
end

#delete!(keys) ⇒ Object 



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# File 'lib/openstack/compute/metadata.rb', line 91

def delete!(keys)
  keys = [keys] unless keys.is_a? Array
  keys.each { |key|
    @connection.req('DELETE', "#{@base_url}/#{key}")
    @metadata.delete(key) if not @metadata.nil?
  }
end

#each ⇒ Object 



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# File 'lib/openstack/compute/metadata.rb', line 39

def each
  refresh if @metadata.nil?
  @metadata.each
end

#each_pair ⇒ Object 



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# File 'lib/openstack/compute/metadata.rb', line 27

def each_pair
  @metadata = {} if @metadata.nil?
  @metadata.each_pair do |k,v|
      yield k, v
  end
end

#has_key?(key) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/openstack/compute/metadata.rb', line 112

def has_key?(key)
  return False if @metadata.nil?
  return @metadata.has_key?(key)
end

#refresh(keys = nil) ⇒ Object 



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# File 'lib/openstack/compute/metadata.rb', line 67

def refresh(keys=nil)
  if keys.nil?
    response = @connection.req('GET', @base_url)
    @metadata = JSON.parse(response.body)['metadata']
  else
    @metadata = {} if @metadata == nil
    keys = [keys] unless keys.is_a? Array
    keys.each { |key|
      response = @connection.req('GET', "#{@base_url}/#{key}")
      next if response.code == "404"
      meta = JSON.parse(response.body)['meta']
      meta.each { |k, v| @metadata[k] = v }
    }
  end
end

#save ⇒ Object 



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# File 'lib/openstack/compute/metadata.rb', line 44

def save
  return if @metadata.nil?
  json = JSON.generate(:metadata => @metadata)
  response = @connection.req('PUT', @base_url, :data => json)
  @metadata = JSON.parse(response.body)['metadata']
end

#size ⇒ Object 



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# File 'lib/openstack/compute/metadata.rb', line 34

def size
  @metadata = {} if @metadata.nil?
  @metadata.size
end

#store(key, value) ⇒ Object 



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# File 'lib/openstack/compute/metadata.rb', line 22

def store(key, value)
  @metadata = {} if @metadata.nil?
  @metadata[key] = value
end

#update(keys = nil) ⇒ Object 



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# File 'lib/openstack/compute/metadata.rb', line 51

def update(keys=nil)
  return if @metadata.nil?
  if keys.nil?
    json = JSON.generate(:metadata => @metadata)
    response = @connection.req('POST', @base_url, :data => json)
    @metadata = JSON.parse(response.body)['metadata']
  else
    keys = [keys] unless keys.is_a? Array
    keys.each { |key|
      next if not @metadata.has_key?(key)
      json = JSON.generate(:meta => { key => @metadata[key] })
      @connection.req('PUT', "#{@base_url}/#{key}", :data => json)
    }
  end
end