Class: CarrierWave::Storage::Fog::File

Inherits:
Object
  • Object
show all
Includes:
Utilities::Uri
Defined in:
lib/carrierwave/storage/fog.rb

Constant Summary

Constants included from Utilities::Uri

Utilities::Uri::SAFE_STRING, Utilities::Uri::UNSAFE

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(uploader, base, path) ⇒ File

Returns a new instance of File


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# File 'lib/carrierwave/storage/fog.rb', line 285

def initialize(uploader, base, path)
  @uploader, @base, @path, @content_type = uploader, base, path, nil
end

Instance Attribute Details

#pathObject (readonly)

Current local path to file

Returns

String

a path to file


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# File 'lib/carrierwave/storage/fog.rb', line 173

def path
  @path
end

Instance Method Details

#attributesObject

Return all attributes from file

Returns

Hash

attributes from file


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# File 'lib/carrierwave/storage/fog.rb', line 182

def attributes
  file.attributes
end

#authenticated_url(options = {}) ⇒ Object

Return a temporary authenticated url to a private file, if available Only supported for AWS, Rackspace, Google, AzureRM and Aliyun providers

Returns

String

temporary authenticated url

or
NilClass

no authenticated url available


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# File 'lib/carrierwave/storage/fog.rb', line 196

def authenticated_url(options = {})
  if ['AWS', 'Google', 'Rackspace', 'OpenStack', 'AzureRM', 'Aliyun'].include?(@uploader.fog_credentials[:provider])
    # avoid a get by using local references
    local_directory = connection.directories.new(:key => @uploader.fog_directory)
    local_file = local_directory.files.new(:key => path)
    expire_at = options[:expire_at] || ::Fog::Time.now + @uploader.fog_authenticated_url_expiration
    case @uploader.fog_credentials[:provider]
      when 'AWS', 'Google'
        # Older versions of fog-google do not support options as a parameter
        if url_options_supported?(local_file)
          local_file.url(expire_at, options)
        else
          warn "Options hash not supported in #{local_file.class}. You may need to upgrade your Fog provider."
          local_file.url(expire_at)
        end
      when 'Rackspace', 'OpenStack'
        connection.get_object_https_url(@uploader.fog_directory, path, expire_at, options)
      when 'Aliyun'
        expire_at = expire_at - Time.now
        local_file.url(expire_at)
      else
        local_file.url(expire_at)
    end
  end
end

#content_typeObject

Lookup value for file content-type header

Returns

String

value of content-type


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# File 'lib/carrierwave/storage/fog.rb', line 229

def content_type
  @content_type || file.try(:content_type)
end

#content_type=(new_content_type) ⇒ Object

Set non-default content-type header (default is file.content_type)

Returns

String

returns new content type value


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# File 'lib/carrierwave/storage/fog.rb', line 240

def content_type=(new_content_type)
  @content_type = new_content_type
end

#copy_to(new_path) ⇒ CarrierWave::Storage::Fog::File

Creates a copy of this file and returns it.

Parameters

new_path (String)

The path where the file should be copied to.

Returns

Returns:


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# File 'lib/carrierwave/storage/fog.rb', line 444

def copy_to(new_path)
  connection.copy_object(@uploader.fog_directory, file.key, @uploader.fog_directory, new_path, acl_header)
  CarrierWave::Storage::Fog::File.new(@uploader, @base, new_path)
end

#deleteObject

Remove the file from service

Returns

Boolean

true for success or raises error


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# File 'lib/carrierwave/storage/fog.rb', line 251

def delete
  # avoid a get by just using local reference
  directory.files.new(:key => path).destroy.tap do |result|
    @file = nil if result
  end
end

#exists?Boolean

Check if the file exists on the remote service

Returns

Boolean

true if file exists or false

Returns:

  • (Boolean)

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# File 'lib/carrierwave/storage/fog.rb', line 326

def exists?
  !!file
end

#extensionObject

Return extension of file

Returns

String

extension of file or nil if the file has no extension


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# File 'lib/carrierwave/storage/fog.rb', line 265

def extension
  path_elements = path.split('.')
  path_elements.last if path_elements.size > 1
end

#filename(options = {}) ⇒ Object

Return file name, if available

Returns

String

file name

or
NilClass

no file name available


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# File 'lib/carrierwave/storage/fog.rb', line 428

def filename(options = {})
  return unless file_url = url(options)
  CGI.unescape(file_url.split('?').first).gsub(/.*\/(.*?$)/, '\1')
end

#headersObject

deprecated: All attributes from file (includes headers)

Returns

Hash

attributes from file


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# File 'lib/carrierwave/storage/fog.rb', line 277

def headers
  location = caller.first
  warning = "[yellow][WARN] headers is deprecated, use attributes instead[/]"
  warning << " [light_black](#{location})[/]"
  Formatador.display_line(warning)
  attributes
end

#public_urlObject

Return a url to a public file, if available

Returns

String

public url

or
NilClass

no public url available


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# File 'lib/carrierwave/storage/fog.rb', line 362

def public_url
  encoded_path = encode_path(path)
  if host = @uploader.asset_host
    if host.respond_to? :call
      "#{host.call(self)}/#{encoded_path}"
    else
      "#{host}/#{encoded_path}"
    end
  else
    # AWS/Google optimized for speed over correctness
    case fog_provider
    when 'AWS'
      # check if some endpoint is set in fog_credentials
      if @uploader.fog_credentials.has_key?(:endpoint)
        "#{@uploader.fog_credentials[:endpoint]}/#{@uploader.fog_directory}/#{encoded_path}"
      else
        protocol = @uploader.fog_use_ssl_for_aws ? "https" : "http"

        subdomain_regex = /^(?:[a-z]|\d(?!\d{0,2}(?:\d{1,3}){3}$))(?:[a-z0-9\.]|(?![\-])|\-(?![\.])){1,61}[a-z0-9]$/
        valid_subdomain = @uploader.fog_directory.to_s =~ subdomain_regex && !(protocol == 'https' && @uploader.fog_directory =~ /\./)

        # if directory is a valid subdomain, use that style for access
        if valid_subdomain
          s3_subdomain = @uploader.fog_aws_accelerate ? "s3-accelerate" : "s3"
          "#{protocol}://#{@uploader.fog_directory}.#{s3_subdomain}.amazonaws.com/#{encoded_path}"
        else
          # directory is not a valid subdomain, so use path style for access
          "#{protocol}://s3.amazonaws.com/#{@uploader.fog_directory}/#{encoded_path}"
        end
      end
    when 'Google'
      # https://cloud.google.com/storage/docs/access-public-data
      "https://storage.googleapis.com/#{@uploader.fog_directory}/#{encoded_path}"
    else
      # avoid a get by just using local reference
      directory.files.new(:key => path).public_url
    end
  end
end

#readObject

Read content of file from service

Returns

String

contents of file


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# File 'lib/carrierwave/storage/fog.rb', line 295

def read
  file_body = file.body

  return if file_body.nil?
  return file_body unless file_body.is_a?(::File)

  # Fog::Storage::XXX::File#body could return the source file which was upoloaded to the remote server.
  read_source_file(file_body) if ::File.exist?(file_body.path)

  # If the source file doesn't exist, the remote content is read
  @file = nil # rubocop:disable Gitlab/ModuleWithInstanceVariables
  file.body
end

#sizeObject

Return size of file body

Returns

Integer

size of file body


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# File 'lib/carrierwave/storage/fog.rb', line 316

def size
  file.nil? ? 0 : file.content_length
end

#store(new_file) ⇒ Object

Write file to service

Returns

Boolean

true on success or raises error


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# File 'lib/carrierwave/storage/fog.rb', line 336

def store(new_file)
  if new_file.is_a?(self.class)
    new_file.copy_to(path)
  else
    fog_file = new_file.to_file
    @content_type ||= new_file.content_type
    @file = directory.files.create({
      :body         => fog_file ? fog_file : new_file.read,
      :content_type => @content_type,
      :key          => path,
      :public       => @uploader.fog_public
    }.merge(@uploader.fog_attributes))
    fog_file.close if fog_file && !fog_file.closed?
  end
  true
end

#url(options = {}) ⇒ Object

Return url to file, if avaliable

Returns

String

url

or
NilClass

no url available


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# File 'lib/carrierwave/storage/fog.rb', line 411

def url(options = {})
  if !@uploader.fog_public
    authenticated_url(options)
  else
    public_url
  end
end