Class: Shuck::FileStore

Inherits:
Object
  • Object
show all
Defined in:
lib/shuck/file_store.rb

Constant Summary collapse

SHUCK_METADATA_DIR = 
".shuck_metadataFFF"

Instance Method Summary collapse

Constructor Details

#initialize(root) ⇒ FileStore

Returns a new instance of FileStore.



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# File 'lib/shuck/file_store.rb', line 13

def initialize(root)
  @root = root
  @buckets = []
  @bucket_hash = {}
  Dir[File.join(root,"*")].each do |bucket|
    bucket_name = File.basename(bucket)
    bucket_obj = Bucket.new(bucket_name,Time.now,[])
    @buckets << bucket_obj
    @bucket_hash[bucket_name] = bucket_obj
  end
end

Instance Method Details

#buckets ⇒ Object 



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# File 'lib/shuck/file_store.rb', line 44

def buckets
  @buckets
end

#copy_object(src_bucket, src_object, dst_bucket, dst_object) ⇒ Object 



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# File 'lib/shuck/file_store.rb', line 81

def copy_object(src_bucket,src_object,dst_bucket,dst_object)
  src_root = File.join(@root,src_bucket,src_object,SHUCK_METADATA_DIR)
  src_obj = S3Object.new
  src_metadata_filename = File.join(src_root,"metadata")
  src_metadata = YAML.parse(File.open(src_metadata_filename,'rb').read)
  src_content_filename = File.join(src_root,"content")

  dst_filename= File.join(@root,dst_bucket,dst_object)
  FileUtils.mkdir_p(dst_filename)

  metadata_dir = File.join(dst_filename,SHUCK_METADATA_DIR)
  FileUtils.mkdir_p(metadata_dir)

  content = File.join(metadata_dir,"content")
  metadata = File.join(metadata_dir,"metadata")

  File.open(content,'wb') do |f|
    File.open(src_content_filename,'rb') do |input|
      f << input.read
    end
  end

  File.open(metadata,'w') do |f|
    File.open(src_metadata_filename,'r') do |input|
      f << input.read
    end
  end

  obj = S3Object.new
  obj.md5 = src_metadata[:md5]
  obj.content_type = src_metadata[:content_type]
  return obj
end

#create_bucket(bucket) ⇒ Object 



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# File 'lib/shuck/file_store.rb', line 52

def create_bucket(bucket)
  FileUtils.mkdir_p(File.join(@root,bucket))
  bucket_obj = Bucket.new(bucket,Time.now,[])
  if !@bucket_hash[bucket]
    @buckets << bucket_obj
    @bucket_hash[bucket] = bucket_obj
  end
end

#get_bucket(bucket) ⇒ Object 



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# File 'lib/shuck/file_store.rb', line 48

def get_bucket(bucket)
  @bucket_hash[bucket]
end

#get_object(bucket, object, request) ⇒ Object 



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# File 'lib/shuck/file_store.rb', line 61

def get_object(bucket,object, request)
  begin
    real_obj = S3Object.new
    obj_root = File.join(@root,bucket,object,SHUCK_METADATA_DIR)
    metadata = YAML.parse(File.open(File.join(obj_root,"metadata"),'rb').read)
    real_obj.name = object
    real_obj.md5 = metadata[:md5].value
    real_obj.content_type = metadata[:content_type] ? metadata[:content_type].value : "application/octet-stream"
    #real_obj.io = File.open(File.join(obj_root,"content"),'rb')
    real_obj.io = RateLimitableFile.open(File.join(obj_root,"content"),'rb')
    return real_obj
  rescue
    puts $!
    return nil
  end
end

#object_metadata(bucket, object) ⇒ Object 



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# File 'lib/shuck/file_store.rb', line 78

def object_metadata(bucket,object)
end

#rate_limit=(rate_limit) ⇒ Object

Pass a rate limit in bytes per second



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# File 'lib/shuck/file_store.rb', line 26

def rate_limit=(rate_limit)
  if rate_limit.is_a?(String)
    if rate_limit =~ /^(\d+)$/
      RateLimitableFile.rate_limit = rate_limit.to_i
    elsif rate_limit =~ /^(.*)K$/
      RateLimitableFile.rate_limit = $1.to_f * 1000
    elsif rate_limit =~ /^(.*)M$/
      RateLimitableFile.rate_limit = $1.to_f * 1000000
    elsif rate_limit =~ /^(.*)G$/
      RateLimitableFile.rate_limit = $1.to_f * 1000000000
    else
      raise "Invalid Rate Limit Format: Valid values include (1000,10K,1.1M)"
    end
  else
    RateLimitableFile.rate_limit = nil
  end
end

#store_object(bucket, object, request) ⇒ Object 



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# File 'lib/shuck/file_store.rb', line 115

def store_object(bucket,object,request)
  begin
    filename = File.join(@root,bucket,object)
    FileUtils.mkdir_p(filename)

    metadata_dir = File.join(filename,SHUCK_METADATA_DIR)
    FileUtils.mkdir_p(metadata_dir)

    content = File.join(filename,SHUCK_METADATA_DIR,"content")
    metadata = File.join(filename,SHUCK_METADATA_DIR,"metadata")

    md5 = Digest::MD5.new

    File.open(content,'wb') do |f|
      request.body do |chunk|
        f << chunk
        md5 << chunk
      end
    end

    metadata_struct = {}
    metadata_struct[:md5] = md5.hexdigest
    metadata_struct[:content_type] = request.header["content-type"].first

    File.open(metadata,'w') do |f|
      f << YAML::dump(metadata_struct)
    end
    obj = S3Object.new
    obj.md5 = metadata_struct[:md5]
    obj.content_type = metadata_struct[:content_type]
    return obj
  rescue
    puts $!
    $!.backtrace.each { |line| puts line }
    return nil
  end
end