class DigitalOpera::Services::S3

Public Class Methods

access_key() click to toggle source
# File lib/digital_opera/services/s3.rb, line 139
def self.access_key
  ENV["S3_ACCESS_KEY"]
end
bucket_name() click to toggle source
# File lib/digital_opera/services/s3.rb, line 135
def self.bucket_name
  ENV["S3_BUCKET_NAME"]
end
new(document, options={}) click to toggle source
# File lib/digital_opera/services/s3.rb, line 7
def initialize(document, options={})
  throw 'AWS SDK is required' if !defined?(AWS) || AWS.nil?

  if document.class == String
    @key = self.get_key(document)
  else
    @document = document
  end

  @options = {
    acl: 'authenticated-read'
  }.merge(options)
end
secret_access_key() click to toggle source
# File lib/digital_opera/services/s3.rb, line 143
def self.secret_access_key
  ENV["S3_SECRET_ACCESS_KEY"]
end

Public Instance Methods

access_key() click to toggle source
# File lib/digital_opera/services/s3.rb, line 115
def access_key
  self.class.access_key
end
base_url() click to toggle source
# File lib/digital_opera/services/s3.rb, line 25
def base_url
  "https://#{self.bucket_name}.s3.amazonaws.com/"
end
bucket() click to toggle source
# File lib/digital_opera/services/s3.rb, line 107
def bucket
  ::AWS::S3.new.buckets[self.bucket_name]
end
bucket_name() click to toggle source
# File lib/digital_opera/services/s3.rb, line 111
def bucket_name
  self.class.bucket_name
end
delete() click to toggle source
# File lib/digital_opera/services/s3.rb, line 66
def delete
  s3_object.delete
end
document() click to toggle source
# File lib/digital_opera/services/s3.rb, line 21
def document
  @document
end
document_name() click to toggle source
# File lib/digital_opera/services/s3.rb, line 37
def document_name
  if key.present?
    key.downcase.split('/').last
  else
    nil
  end
end
expiration(time=10.hours) click to toggle source
# File lib/digital_opera/services/s3.rb, line 62
def expiration(time=10.hours)
  (time).from_now.to_time.iso8601
end
get_key(url) click to toggle source
# File lib/digital_opera/services/s3.rb, line 123
def get_key(url)
  if url.start_with? self.base_url
    url.split(self.base_url).last
  else
    if url.start_with? '/'
      url[1..(url.length-1)]
    else
      url
    end
  end
end
key() click to toggle source
# File lib/digital_opera/services/s3.rb, line 29
def key
  @key ||= if document.s3_key.present?
    self.get_key document.s3_key
  else
    nil
  end
end
policy() click to toggle source
# File lib/digital_opera/services/s3.rb, line 70
def policy
  Base64.encode64(self.policy_data.to_json).gsub("\n", "")
end
policy_data() click to toggle source
# File lib/digital_opera/services/s3.rb, line 74
def policy_data
  {
    expiration: self.expiration,
    conditions: [
      ["starts-with", "$utf8", ""],
      ["starts-with", "$key", ""],
      { bucket: self.bucket_name },
      { acl: @options[:acl] }
    ]
  }
end
private_url() click to toggle source
# File lib/digital_opera/services/s3.rb, line 53
def private_url
  if self.s3_object.present?
    disposition = "attachment; filename=#{document_name.parameterize}"
    self.s3_object.url_for(:read, :expires => self.expiration(10.minutes), :response_content_disposition => disposition).to_s
  else
    nil
  end
end
public_url() click to toggle source
# File lib/digital_opera/services/s3.rb, line 45
def public_url
  if self.s3_object.present?
    self.s3_object.public_url.to_s
  else
    nil
  end
end
s3_object() click to toggle source
# File lib/digital_opera/services/s3.rb, line 86
def s3_object
  @s3_object ||= if self.key.present?
    self.bucket.objects[self.key]
  else
    nil
  end
end
secret_access_key() click to toggle source
# File lib/digital_opera/services/s3.rb, line 119
def secret_access_key
  self.class.secret_access_key
end
signature() click to toggle source
# File lib/digital_opera/services/s3.rb, line 94
def signature
  Base64.encode64(
    OpenSSL::HMAC.digest(
      OpenSSL::Digest::Digest.new('sha1'),
      self.secret_access_key, policy
    )
  ).gsub("\n", "")
end
upload_key() click to toggle source
# File lib/digital_opera/services/s3.rb, line 103
def upload_key
  'documents/${filename}'
end