Module: SparkleFormation::Provider::Google

Defined in:
lib/sparkle_formation/provider/google.rb

Overview

Google specific implementation

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.extended(klass) ⇒ Object

Properly remap dumping methods



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# File 'lib/sparkle_formation/provider/google.rb', line 93

def self.extended(klass)
  klass.instance_eval do
    alias :non_google_dump :dump
    alias :dump :google_dump
  end
end

.included(klass) ⇒ Object

Properly remap dumping methods



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# File 'lib/sparkle_formation/provider/google.rb', line 85

def self.included(klass)
  klass.class_eval do
    alias_method :non_google_dump, :dump
    alias_method :dump, :google_dump
  end
end

Instance Method Details

#apply_deep_nesting(*args) {|stack, resource, s_name| ... } ⇒ SparkleFormation::SparkleStruct

Apply deeply nested stacks. This is the new nesting approach and does not bubble parameters up to the root stack. Parameters are isolated to the stack resource itself and output mapping is automatically applied.

Yield Parameters:

  • stack (SparkleFormation) —

    stack instance

  • resource (AttributeStruct) —

    the stack resource

  • s_name (String) —

    stack resource name

Yield Returns:

  • (Hash) —

    key/values to be merged into resource properties

Returns:



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# File 'lib/sparkle_formation/provider/google.rb', line 124

def apply_deep_nesting(*args, &block)
  outputs = collect_outputs
  nested_stacks(:with_resource).each do |stack, resource|
    unless stack.nested_stacks.empty?
      stack.apply_deep_nesting(*args)
    end
    stack.compile.parameters.keys!.each do |parameter_name|
      if output_name = output_matched?(parameter_name, outputs.keys)
        next if outputs[output_name] == stack
        stack_output = stack.make_output_available(output_name, outputs, self)
        # NOTE: Only set value if not already explicitly set
        if resource.properties._set(parameter_name).nil?
          resource.properties._set(parameter_name, stack_output)
        end
      end
    end
  end
  if block_given?
    extract_templates(&block)
  end
  self
end

#apply_shallow_nesting(*args, &block) ⇒ Object

Forcibly disable shallow nesting as support for it with Google templates doesn’t really make much sense.



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# File 'lib/sparkle_formation/provider/google.rb', line 149

def apply_shallow_nesting(*args, &block)
  raise NotImplementedError.new "Shallow nesting is not supported for this provider!"
end

#generate_policy ⇒ Hash

Generate policy for stack

Returns:

  • (Hash) 


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# File 'lib/sparkle_formation/provider/google.rb', line 110

def generate_policy
  {}
end

#generate_template_files(r_name, r_stack, dump_copy) ⇒ String

Sets stack template files into target copy and extracts parameters into schema files if available

Parameters:

  • r_name (String) —

    name used for template file name

  • r_stack (Hash) —

    template to store

  • dump_copy (Smash) —

    translated dump

Returns:

  • (String) —

    new type for stack



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# File 'lib/sparkle_formation/provider/google.rb', line 42

def generate_template_files(r_name, r_stack, dump_copy)
  f_name = "#{r_name}.jinja"
  r_parameters = r_stack.delete("parameters")
  dump_copy[:imports].push(
    Smash.new(
      :name => f_name,
      :content => r_stack,
    )
  )
  if r_parameters
    dump_copy[:imports].push(
      Smash.new(
        :name => "#{f_name}.schema",
        :content => Smash.new.tap { |schema|
          schema.set(:info, :title, "#{f_name} template")
          schema.set(:info, :description, "#{f_name} template schema")
          schema.set(:properties, r_parameters)
        },
      )
    )
  end
  f_name
end

#google_dump ⇒ Hash

Customized dump to break out templates into consumable structures for passing to the deployment manager API

Returns:

  • (Hash) 


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# File 'lib/sparkle_formation/provider/google.rb', line 70

def google_dump
  result = non_google_dump
  if root?
    dump_copy = Smash.new(:imports => [])
    google_template_extractor(result, dump_copy)
    dump_copy.set(:config, :content, result)
    dump_copy.set(:config, :content, :imports,
                  dump_copy[:imports].map { |i| i[:name] })
    dump_copy.to_hash
  else
    result
  end
end

#google_template_extractor(template_hash, dump_copy, parent_names = []) ⇒ Smash

Extract nested stack templates and store in root level files

Parameters:

  • template_hash (Hash) —

    template hash to process

  • dump_copy (Smash) —

    translated dump

  • parent_names (Array<String>) (defaults to: []) —

    name of parent resources

Returns:

  • (Smash) —

    dump_copy



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# File 'lib/sparkle_formation/provider/google.rb', line 19

def google_template_extractor(template_hash, dump_copy, parent_names = [])
  template_hash.fetch("resources", []).each do |t_resource|
    if t_resource["type"] == stack_resource_type
      full_names = parent_names + [t_resource["name"]]
      stack = t_resource["properties"].delete("stack")
      if t_resource["properties"].empty?
        t_resource.delete("properties")
      end
      google_template_extractor(stack, dump_copy, full_names)
      new_type = generate_template_files(full_names.join("-"), stack, dump_copy)
      t_resource["type"] = new_type
    end
  end
  dump_copy
end

#make_output_available(output_name, outputs, source_stack) ⇒ Object

Extract output to make available for stack parameter usage at the current depth

Parameters:

  • output_name (String) —

    name of output

  • outputs (Hash) —

    listing of outputs

  • source_stack (SparkleFormation) —

    requesting stack



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# File 'lib/sparkle_formation/provider/google.rb', line 160

def make_output_available(output_name, outputs, source_stack)
  bubble_path = outputs[output_name].root_path - root_path
  drip_path = root_path - outputs[output_name].root_path
  bubble_path.each_slice(2) do |base_sparkle, ref_sparkle|
    next unless ref_sparkle
    base_sparkle.compile.outputs._set(output_name)._set(
      :value, base_sparkle.compile._stack_output(
        ref_sparkle.name, output_name
      )
    )
  end
  if bubble_path.empty?
    if drip_path.size == 1
      parent = drip_path.first.parent
      if parent && !parent.compile.parameters._set(output_name).nil?
        return compile.parameter!(output_name)
      end
    end
    raise ArgumentError.new "Failed to detect available bubbling path for output `#{output_name}`. " <<
                              "This may be due to a circular dependency! " <<
                              "(Output Path: #{outputs[output_name].root_path.map(&:name).join(" > ")} " <<
                              "Requester Path: #{root_path.map(&:name).join(" > ")})"
  end
  result = source_stack.compile._stack_output(bubble_path.first.name, output_name)
  if drip_path.size > 1
    parent = drip_path.first.parent
    drip_path.unshift(parent) if parent
    drip_path.each_slice(2) do |base_sparkle, ref_sparkle|
      next unless ref_sparkle
      base_sparkle.compile.resources[ref_sparkle.name].properties.parameters.value._set(output_name, result)
      ref_sparkle.compile.parameters._set(output_name).type "string" # TODO: <<<<------ type check and prop
      result = compile._parameter(output_name)
    end
  end
  result
end

#nested?(*_) ⇒ Boolean

Always return as nested since nesting is our final form

Returns:

  • (Boolean) 


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# File 'lib/sparkle_formation/provider/google.rb', line 9

def nested?(*_)
  true
end

#stack_resource_type ⇒ String

Note:

Nested templates aren’t defined as a specific type thus no “real” type exists. So we’ll create a custom one!

Returns Type string for Google Deployment Manager stack resource.

Returns:

  • (String) —

    Type string for Google Deployment Manager stack resource



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# File 'lib/sparkle_formation/provider/google.rb', line 103

def stack_resource_type
  "sparkleformation.stack"
end