Class: DevStructure::API::Blueprints

Inherits:
Object
  • Object
show all
Includes:
DevStructure
Defined in:
lib/devstructure/api.rb

Overview

Blueprints objects represent a particular user's blueprint collection but is supremely lazy about fetching it.

Instance Method Summary collapse

Constructor Details

#initialize(api, username = nil) ⇒ Blueprints

This ugly constructor should be eschewed in favor of API#blueprints.



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# File 'lib/devstructure/api.rb', line 70

def initialize(api, username=nil)
  @api = api
  @username = username
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(symbol, *args) ⇒ Object

The method_missing handler allows natural-looking code like blueprints.foo.bar that look like the URIs they're referencing behind the scenes. These are limited to reads when taken all the way to referencing a specific blueprint. Just referencing a user this way still allows writes.



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# File 'lib/devstructure/api.rb', line 80

def method_missing(symbol, *args)
  if @username
    get symbol.to_s
  else
    @username = symbol.to_s
    self
  end
end

Instance Method Details

#delete(name, options = {}) ⇒ Object

Delete a blueprint and all its versions.



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# File 'lib/devstructure/api.rb', line 148

def delete(name, options={})
  @api.start unless @api.started?
  @api.delete(@api.path("blueprints", @username, name), @api.headers)
end

#get(name, token = nil) ⇒ Object

The API version of blueprint-show(1). It returns a DevStructure::Blueprint object.



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# File 'lib/devstructure/api.rb', line 104

def get(name, token=nil)
  @api.start unless @api.started?
  response = @api.get(@api.path("blueprints", @username, name, token),
    @api.headers)
  return response unless Net::HTTPOK == response.class
  hash = JSON.parse(response.body)
  Blueprint.new(hash["name"], hash)
end

#list ⇒ Object

The API version of blueprint-list(1). It returns an array of DevStructure::Blueprint objects.



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# File 'lib/devstructure/api.rb', line 92

def list
  @api.start unless @api.started?
  response = @api.get(@api.path("blueprints", @username), @api.headers)
  return response unless Net::HTTPOK == response.class
  JSON.parse(response.body).collect do |hash|
    Blueprint.new(hash["name"], hash)
  end
end

#post(name, options = {}) ⇒ Object

The API version of blueprint-create(1). It encodes and POSTs a blueprint and uploads to S3 any source tarballs referenced. The S3 upload credentials come back as part of the API response. Each set of headers is only valid for that particular upload and even then only for a few minutes.



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# File 'lib/devstructure/api.rb', line 119

def post(name, options={})
  @api.start unless @api.started?
  params = {}
  options.each do |key, value|
    params[key] = if value.kind_of?(Hash)
      JSON.generate(value)
    else
      value
    end
  end
  request = Net::HTTP::Post.new(@api.path("blueprints", @username, name))
  request.set_form_data params
  @api.headers.each { |key, value| request[key] = value }
  response = @api.request(request)
  if Net::HTTPOK === response
    uri = URI.parse("http://s3.amazonaws.com")
    http = Net::HTTP.start(uri.host, uri.port)
    JSON.parse(response.body).each do |filename, headers|
      request = Net::HTTP::Put.new("/blueprint-sources/#{filename}")
      headers.each { |key, value| request[key] = value }
      request["Content-Length"] = File.size(filename)
      request.body_stream = File.open(filename, "r")
      http.request(request)
    end
  end
  response
end