Class: BerkshelfStore::Backends::Filesystem

Inherits:
Object
  • Object
show all
Defined in:
lib/berkshelf-store/backends/filesystem.rb

Instance Method Summary collapse

Constructor Details

#initialize(path, tmp) ⇒ Filesystem

Returns a new instance of Filesystem.



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# File 'lib/berkshelf-store/backends/filesystem.rb', line 11

def initialize(path, tmp)
  @path = path
  @tmp = tmp
end

Instance Method Details

#check_filename(filename) ⇒ Object 



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# File 'lib/berkshelf-store/backends/filesystem.rb', line 16

def check_filename(filename)
  #do minimal checks
  true
end

#cookbook_data(cookbook) ⇒ Object 



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# File 'lib/berkshelf-store/backends/filesystem.rb', line 83

def cookbook_data(cookbook)
  platforms = cookbook.metadata.platforms || Hash.new
  dependencies = cookbook.metadata.dependencies || Hash.new
  
  name = cookbook.cookbook_name.to_s
  version = cookbook.version.to_s
  
  path = "/#{name}/#{version}/#{name}-#{version}.tgz"
  
  retval = {
    "name" => name,
    "version" => version,
    "data" => {
      "endpoint_priority" => 0,
      "platforms" => platforms,
      "dependencies" => dependencies,
      "location_type" => 'uri',
      "location_path" => path
    }
  }
  return retval
end

#get_catalog(prefix) ⇒ Object 



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# File 'lib/berkshelf-store/backends/filesystem.rb', line 130

def get_catalog(prefix)
  retval = {}
  Dir["#{@path}/*/*/data.json"].each do |json_file|
     data = JSON.parse(File.read("#{json_file}"))
	 data['data']['location_path'] = "#{prefix}#{data['data']['location_path']}"
	 retval[data['name']] ||= Hash.new
	 retval[data['name']][data['version']] = data['data']
  end
  retval
end

#get_json(name, version) ⇒ Object 



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# File 'lib/berkshelf-store/backends/filesystem.rb', line 122

def get_json(name, version)
  File.open("#{@path}/#{name}/#{version}/data.json", "r").read
end

#get_tarball(name, version) ⇒ Object 



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# File 'lib/berkshelf-store/backends/filesystem.rb', line 126

def get_tarball(name, version)
  File.open("#{@path}/#{name}/#{version}/#{name}-#{version}.tgz").read
end

#last_error ⇒ Object 



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# File 'lib/berkshelf-store/backends/filesystem.rb', line 118

def last_error
  @error
end

#store(content) ⇒ Object 



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# File 'lib/berkshelf-store/backends/filesystem.rb', line 21

def store(content)
  data = {}

  digest = Digest::SHA256.hexdigest(content)
  tmp_dir = "#{@tmp}/#{digest}"
  
  FileUtils.mkdir_p "#{tmp_dir}/cookbook"

  #extract cookbook
  if write_tmp_file("#{tmp_dir}/cookbook.tgz", content)
    cmd = "tar --gzip --extract --file=\"#{tmp_dir}/cookbook.tgz\" -C \"#{tmp_dir}/cookbook\""
    %x{#{cmd}}
  
    if $?.exitstatus != 0
      return {"fail" => "Failed to extract metadata.rb from tarball"}
    end
  else
    return {"fail" => "Unable to write cookbook #{tmp_dir}/cookbook.tgz"}
  end
  
  #locate check cookbook
  search_root = Dir["#{tmp_dir}/cookbook/*/metadata.rb"]
  if search_root.size != 1
    return {"fail" => "tgz needs to contain ./a_dir/metadata.rb"}
  end
  cookbook_dir = File.dirname(search_root[0])
    
  #Extract information
  begin
    cookbook = Ridley::Chef::Cookbook.from_path(cookbook_dir)
    data = cookbook_data(cookbook)
    name = data['name']
    version = data['version']
  rescue Exception => e
    return {"fail" => "Information extraction failed #{e}"}
  end

  begin
    data_dir = "#{@path}/#{name}/#{version}"
    FileUtils.mkdir_p "#{data_dir}" 
  rescue SystemCallError => e
    return {"fail" => "#{data_dir} creation failed #{e}"}
  end

  begin
    json_file = File.open("#{data_dir}/data.json", "w")
    json_file.write(data.to_json)
    json_file.close
  rescue Exception => e
    return {"fail" => "#{data_dir}/data.json creation failed #{e}"}
  end
  
  begin
    File.rename("#{tmp_dir}/cookbook.tgz", "#{data_dir}/#{name}-#{version}.tgz")
  rescue Exception => e
    return {"fail" => "tarball store failed #{e}"}
  end

  FileUtils.rm_rf("#{tmp_dir}")
  return data
end

#write_tmp_file(name, content) ⇒ Object 



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# File 'lib/berkshelf-store/backends/filesystem.rb', line 106

def write_tmp_file(name, content)
  begin
    tarfile = File.open("#{name}", "w")
    tarfile.write(content)
  rescue IOError => e
    @error="Failed to write temp file #{name}"
    return false
  ensure
    tarfile.close unless tarfile == nil
  end
end