Class: Immudb::Tx

Inherits:
Object
  • Object
show all
Defined in:
lib/immudb/tx.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#Alh ⇒ Object

Returns the value of attribute Alh.



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# File 'lib/immudb/tx.rb', line 15

def Alh
  @Alh
end

#BlRoot ⇒ Object

Returns the value of attribute BlRoot.



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# File 'lib/immudb/tx.rb', line 15

def BlRoot
  @BlRoot
end

#BlTxID ⇒ Object

Returns the value of attribute BlTxID.



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# File 'lib/immudb/tx.rb', line 15

def BlTxID
  @BlTxID
end

#entries ⇒ Object

Returns the value of attribute entries.



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# File 'lib/immudb/tx.rb', line 15

def entries
  @entries
end

#htree ⇒ Object

Returns the value of attribute htree.



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# File 'lib/immudb/tx.rb', line 15

def htree
  @htree
end

#ID ⇒ Object

Returns the value of attribute ID.



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# File 'lib/immudb/tx.rb', line 15

def ID
  @ID
end

#nentries ⇒ Object

Returns the value of attribute nentries.



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# File 'lib/immudb/tx.rb', line 15

def nentries
  @nentries
end

#PrevAlh ⇒ Object

Returns the value of attribute PrevAlh.



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# File 'lib/immudb/tx.rb', line 15

def PrevAlh
  @PrevAlh
end

#Ts ⇒ Object

Returns the value of attribute Ts.



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# File 'lib/immudb/tx.rb', line 15

def Ts
  @Ts
end

Instance Method Details

#build_hash_tree ⇒ Object 



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# File 'lib/immudb/tx.rb', line 17

def build_hash_tree
  digests = []
  @entries.each do |e|
    digests << e.digest
  end
  @htree.build_with(digests)
end

#calc_alh ⇒ Object 



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# File 'lib/immudb/tx.rb', line 25

def calc_alh
  calc_innerhash
  bi = [@ID].pack("Q>") + @PrevAlh + @InnerHash
  @Alh = Digest::SHA256.digest(bi)
end

#calc_innerhash ⇒ Object 



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# File 'lib/immudb/tx.rb', line 31

def calc_innerhash
  bj = [@Ts, @nentries].pack("Q>L>") + eh
  bj += [@BlTxID].pack("Q>") + @BlRoot
  @InnerHash = Digest::SHA256.digest(bj)
end

#eh ⇒ Object 



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# File 'lib/immudb/tx.rb', line 37

def eh
  @htree.root
end

#proof(key) ⇒ Object 



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# File 'lib/immudb/tx.rb', line 41

def proof(key)
  kindex = nil
  # find index of element holding given key
  @entries.each_with_index do |v, k|
    if v.key == key
      kindex = k
      break
    end
  end
  if kindex.nil?
    raise KeyError
  end
  @htree.inclusion_proof(kindex)
end