Thingfish

Constants

CHUNK_SIZE: The chunk size to read

Public Instance Methods

anchor

on_request( request )

Synchronous processor API – generate a checksum during upload.

# File lib/thingfish/processor/sha256.rb, line 24
def on_request( request )
        request.add_metadata( :checksum => self.checksum(request.body) )
        request.related_resources.each_pair do |io, metadata|
                metadata[ :checksum ] = self.checksum( io )
        end
end

Protected Instance Methods

anchor

checksum( io )

Given an io, return a sha256 checksum of it's contents.

# File lib/thingfish/processor/sha256.rb, line 37
def checksum( io )
        digest = Digest::SHA256.new
        buf = ''

        while io.read( CHUNK_SIZE, buf )
                digest.update( buf )
        end

        io.rewind
        return digest.hexdigest
end