Class: ErpTechSvcs::FileSupport::S3Manager

Inherits:
Manager
  • Object
show all
Defined in:
lib/erp_tech_svcs/file_support/s3_manager.rb

Constant Summary

Constants inherited from Manager

Manager::FILE_DOES_NOT_EXIST, Manager::FILE_FOLDER_DOES_NOT_EXIST, Manager::FOLDER_IS_NOT_EMPTY

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Manager

#build_file_assets_tree_for_model, find_parent, #insert_folders, #sync

Class Method Details

.setup_connection ⇒ Object 



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# File 'lib/erp_tech_svcs/file_support/s3_manager.rb', line 10

def setup_connection
  @@configuration = YAML::load_file(File.join(Rails.root, 'config', 's3.yml'))[Rails.env]

  # S3 debug logging
  # AWS.config(
  #     :logger => Rails.logger,
  #     :log_level => :info
  # )

  @@s3_connection = AWS::S3.new(
      :access_key_id => @@configuration['access_key_id'],
      :secret_access_key => @@configuration['secret_access_key']
  )

  @@s3_bucket = @@s3_connection.buckets[@@configuration['bucket'].to_sym]
end

Instance Method Details

#bucket ⇒ Object 



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# File 'lib/erp_tech_svcs/file_support/s3_manager.rb', line 37

def bucket
  @@s3_bucket
end

#bucket=(name) ⇒ Object 



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# File 'lib/erp_tech_svcs/file_support/s3_manager.rb', line 33

def bucket=(name)
  @@s3_bucket = @@s3_connection.buckets[name.to_sym]
end

#buckets ⇒ Object 



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# File 'lib/erp_tech_svcs/file_support/s3_manager.rb', line 29

def buckets
  @@s3_connection.buckets
end

#build_tree(starting_path, options = {}) ⇒ Object 



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# File 'lib/erp_tech_svcs/file_support/s3_manager.rb', line 168

def build_tree(starting_path, options={})
  node_tree = find_node(starting_path, options)
  node_tree.nil? ? [] : node_tree
end

#create_file(path, name, content) ⇒ Object 



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# File 'lib/erp_tech_svcs/file_support/s3_manager.rb', line 53

def create_file(path, name, content)
  path = path.sub(%r{^/}, '')
  full_filename = (path.blank? ? name : File.join(path, name))
  bucket.objects[full_filename].write(content, {:acl => :public_read})
end

#create_folder(path, name) ⇒ Object 



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# File 'lib/erp_tech_svcs/file_support/s3_manager.rb', line 59

def create_folder(path, name)
  path = path.sub(%r{^/}, '')
  full_filename = (path.blank? ? name : File.join(path, name))
  folder = full_filename + "/"
  bucket.objects[folder].write('', {:acl => :public_read})
end

#delete_file(path, options = {}) ⇒ Object 



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# File 'lib/erp_tech_svcs/file_support/s3_manager.rb', line 122

def delete_file(path, options={})
  is_directory = File.extname(path).blank?
  path = path.sub(%r{^/}, '')
  result = false
  message = nil
  begin
    if options[:force] or bucket.as_tree(:prefix => path).children.count <= 1 # aws-sdk includes the folder itself as a child (like . is current dir), this needs revisited as <= 1 is scary
      bucket.objects.with_prefix(path).delete_all
      message = "File was deleted successfully"
      result = true
    else
      message = FOLDER_IS_NOT_EMPTY
    end
  rescue Exception => e
    result = false
    message = e
  end

  return result, message, is_directory
end

#exists?(path) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/erp_tech_svcs/file_support/s3_manager.rb', line 143

def exists?(path)
  begin
    path = path.sub(%r{^/}, '')
    return bucket.objects[path].exists?
  rescue AWS::S3::Errors::NoSuchKey
    return false
  end
end

#find_node(path, options = {}) ⇒ Object 



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# File 'lib/erp_tech_svcs/file_support/s3_manager.rb', line 173

def find_node(path, options={})
  #remove proceeding slash for s3
  path.sub!(%r{^/}, '')

  parent = {:text => path.split('/').pop, :leaf => false, :id => path, :children => []}

  tree = bucket.as_tree(:prefix => path)
  tree.children.each do |node|
    if node.leaf?
      #ignore current path that comes as leaf from s3
      next if node.key == path + '/'

      leaf_hash = {
          :text => node.key.split('/').pop,
          :downloadPath => "/#{node.key}",
          :id => "/#{node.key}",
          :leaf => true
      }

      if options[:file_asset_holder]
        files = options[:file_asset_holder].files

        parent_directories =  leaf_hash[:id].split('/')
        parent_directories.pop
        parent_directory = parent_directories.join('/')

        file = files.find { |file| file.directory == parent_directory and file.name == leaf_hash[:text] }
        unless file.nil?
          leaf_hash[:isSecured] = file.is_secured?
          leaf_hash[:roles] = file.roles.collect { |r| r.internal_identifier }
          leaf_hash[:iconCls] = 'icon-document_lock' if leaf_hash[:isSecured]
          leaf_hash[:size] = file.data_file_size
          leaf_hash[:width] = file.width
          leaf_hash[:height] = file.height
          leaf_hash[:url] = file.url
        end
      end

      parent[:children] << leaf_hash
    else
      parent[:children] << {
          :iconCls => "icon-content",
          :text => node.prefix.split('/').pop,
          :id => "/#{node.prefix}".chop,
          :leaf => false
      }
    end
  end

  parent
end

#get_contents(path) ⇒ Object 



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# File 'lib/erp_tech_svcs/file_support/s3_manager.rb', line 152

def get_contents(path)
  contents = nil
  message = nil

  path = path.sub(%r{^/}, '')
  begin
    object = bucket.objects[path]
    contents = object.read
  rescue AWS::S3::Errors::NoSuchKey => error
    contents = ''
    message = FILE_DOES_NOT_EXIST
  end

  return contents, message
end

#rename_file(path, name) ⇒ Object 



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# File 'lib/erp_tech_svcs/file_support/s3_manager.rb', line 89

def rename_file(path, name)
  result = false
  old_name = File.basename(path)
  path_pieces = path.split('/')
  path_pieces.delete(path_pieces.last)
  path_pieces.push(name)
  new_path = path_pieces.join('/')
  begin
    file = FileAsset.where(:name => ::File.basename(path)).where(:directory => ::File.dirname(path)).first
    acl = (file.is_secured? ? :private : :public_read) unless file.nil?
    options = (file.nil? ? {} : {:acl => acl})
    path = path.sub(%r{^/}, '')
    new_path = new_path.sub(%r{^/}, '')
#          Rails.logger.info "renaming from #{path} to #{new_path}"
    old_object = bucket.objects[path]
    if new_object = old_object.move_to(new_path, options)
      message = "#{old_name} was renamed to #{name} successfully"
      result = true
    else
      message = "Error renaming #{old_name}"
    end
  rescue AWS::S3::Errors::NoSuchKey => ex
    message = FILE_FOLDER_DOES_NOT_EXIST
  end

  return result, message
end

#root ⇒ Object 



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# File 'lib/erp_tech_svcs/file_support/s3_manager.rb', line 41

def root
  ''
end

#save_move(path, new_parent_path) ⇒ Object 



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# File 'lib/erp_tech_svcs/file_support/s3_manager.rb', line 66

def save_move(path, new_parent_path)
  result = false
  unless self.exists? path
    message = FILE_DOES_NOT_EXIST
  else
    file = FileAsset.where(:name => ::File.basename(path)).where(:directory => ::File.dirname(path)).first
    acl = (file.is_secured? ? :private : :public_read) unless file.nil?
    options = (file.nil? ? {} : {:acl => acl})
    name = File.basename(path)
    path = path.sub(%r{^/}, '')
    new_path = File.join(new_parent_path, name).sub(%r{^/}, '')
    old_object = bucket.objects[path]
    if new_object = old_object.move_to(new_path, options)
      message = "#{name} was moved to #{new_path} successfully"
      result = true
    else
      message = "Error moving file #{path}"
    end
  end

  return result, message
end

#set_permissions(path, canned_acl = :public_read) ⇒ Object 



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# File 'lib/erp_tech_svcs/file_support/s3_manager.rb', line 117

def set_permissions(path, canned_acl=:public_read)
  path = path.sub(%r{^/}, '')
  bucket.objects[path].acl = canned_acl
end

#update_file(path, content) ⇒ Object 



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# File 'lib/erp_tech_svcs/file_support/s3_manager.rb', line 45

def update_file(path, content)
  file = FileAsset.where(:name => ::File.basename(path)).where(:directory => ::File.dirname(path)).first
  acl = (file.is_secured? ? :private : :public_read) unless file.nil?
  options = (file.nil? ? {} : {:acl => acl, :content_type => file.content_type})
  path = path.sub(%r{^/}, '')
  bucket.objects[path].write(content, options)
end