Module: S3Helper

Includes:
REXML
Defined in:
lib/s3_helper.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.set_acl_private(acl_doc) ⇒ Object

sets an ACL to private



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# File 'lib/s3_helper.rb', line 48

def self.set_acl_private(acl_doc)
      # create Document
      doc = Document.new(acl_doc)

      # get AccessControlList node
      acl_node = XPath.first(doc, '//AccessControlList')

      # delete existing 'AllUsers' Grantee
      acl_node.delete_element "//Grant[descendant::URI[text()='http://acs.amazonaws.com/groups/global/AllUsers']]"

      return doc.to_s
end

.set_acl_public_read(acl_doc) ⇒ Object

sets an ACL to public-read



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# File 'lib/s3_helper.rb', line 16

def self.set_acl_public_read(acl_doc)
      # create Document
      doc = Document.new(acl_doc)

      # get AccessControlList node
      acl_node = XPath.first(doc, '//AccessControlList')

      # delete existing 'AllUsers' Grantee
      acl_node.delete_element "//Grant[descendant::URI[text()='http://acs.amazonaws.com/groups/global/AllUsers']]"

      # create a new READ grant node
      grant_node = Element.new('Grant')
      grantee = Element.new('Grantee')
      grantee.attributes['xmlns:xsi'] = 'http://www.w3.org/2001/XMLSchema-instance'
      grantee.attributes['xsi:type'] = 'Group'

      uri = Element.new('URI')
      uri << Text.new('http://acs.amazonaws.com/groups/global/AllUsers')
      grantee.add_element(uri)
      grant_node.add_element(grantee)
      
      perm = Element.new('Permission')
      perm << Text.new('READ')
      grant_node.add_element(perm)

      # attach the new READ grant node
      acl_node.add_element(grant_node)

      return doc.to_s
end

.set_acl_public_read_write(acl_doc) ⇒ Object

sets an ACL to public-read-write



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# File 'lib/s3_helper.rb', line 62

def self.set_acl_public_read_write(acl_doc)
      # create Document
      doc = Document.new(acl_doc)

      # get AccessControlList node
      acl_node = XPath.first(doc, '//AccessControlList')

      # delete existing 'AllUsers' Grantee
      acl_node.delete_element "//Grant[descendant::URI[text()='http://acs.amazonaws.com/groups/global/AllUsers']]"

      # create a new READ grant node
      grant_node = Element.new('Grant')
      grantee = Element.new('Grantee')
      grantee.attributes['xmlns:xsi'] = 'http://www.w3.org/2001/XMLSchema-instance'
      grantee.attributes['xsi:type'] = 'Group'

      uri = Element.new('URI')
      uri << Text.new('http://acs.amazonaws.com/groups/global/AllUsers')
      grantee.add_element(uri)
      grant_node.add_element(grantee)
      
      perm = Element.new('Permission')
      perm << Text.new('READ')
      grant_node.add_element(perm)

      # attach the new grant node
      acl_node.add_element(grant_node)

      # create a new WRITE grant node
      grant_node = Element.new('Grant')
      grantee = Element.new('Grantee')
      grantee.attributes['xmlns:xsi'] = 'http://www.w3.org/2001/XMLSchema-instance'
      grantee.attributes['xsi:type'] = 'Group'

      uri = Element.new('URI')
      uri << Text.new('http://acs.amazonaws.com/groups/global/AllUsers')
      grantee.add_element(uri)
      grant_node.add_element(grantee)
      
      perm = Element.new('Permission')
      perm << Text.new('WRITE')
      grant_node.add_element(perm)

      # attach the new grant tree
      acl_node.add_element(grant_node)

      return doc.to_s
end

Instance Method Details

returns public URL for key



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# File 'lib/s3_helper.rb', line 9

def public_link(bucket_name, key='')
  url = File.join('http://', S3::DEFAULT_HOST, bucket_name, key)
  str = link_to(key, url)
  str
end