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Testing new versions
This commit is contained in:
b-g-goodell
parent
807d29ac0a
commit
41c8b73f2b
2 changed files with 313 additions and 60 deletions
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@ -1,77 +1,85 @@
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import unittest
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import math
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import numpy as np
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import copy
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from collections import deque
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import time
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import hashlib
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class Block(object):
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""" Fundamental object. Contains dict of blockIDs:(parent blocks) """
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"""
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Fundamental object. Attributes:
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data = payload dict with keys "timestamp" and "txns" and others
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ident = string
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parents = dict {blockID : parentBlock}
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Functions:
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addParents : takes dict {blockID : parentBlock} as input
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and updates parents to include.
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_recomputeIdent : recomputes identity
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Usage:
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b0 = Block()
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b0.data = ...
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b1 = Block()
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b1.data = ...
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b1.addParents({b0.ident:b0})
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"""
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def __init__(self):
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self.id = "" # string
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self.timestamp = None # format tbd
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self.data = None # payload
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self.parents = {} # block ID : pointer to block
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self.children = {} # block ID : pointer to block
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def addChild(self, childIn):
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if childIn not in self.children:
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self.children.update({childIn.id:childIn})
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def addChildren(self, childrenIn):
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for child in childrenIn:
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self.addChild(childrenIn[child])
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def addParent(self, parentIn):
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if parentIn not in self.parents:
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self.parents.update({parentIn.id:parentIn})
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def addParents(self, parentsIn):
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for parent in parentsIn:
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self.addParent(parentsIn[parent])
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# Initialize with empty payload, no identity, and empty parents.
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self.data = None
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self.ident = hash(str(0))
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self.parents = None
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self.addParents({})
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def addParents(self, parentsIn): # dict of parents
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if self.parents is None:
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self.parents = parentsIn
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else:
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self.parents.update(parentsIn)
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self._recomputeIdent()
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def _recomputeIdent(self):
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m = str(0) + str(self.data) + str(self.parents)
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self.ident = hash(m)
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class Test_Block(unittest.TestCase):
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def test_Block(self):
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# b0 -> b1 -> {both b2, b3} -> b4... oh, and say b3 -> b5 also
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b0 = Block()
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b0.id = "0"
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self.assertTrue(b0.data is None)
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self.assertTrue(len(b0.parents)==0)
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b0.data = {"timestamp" : time.time()}
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time.sleep(1)
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b1 = Block()
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b1.parents.update({"0":b0})
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b1.id = "1"
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for parentID in b1.parents:
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b1.parents[parentID].children.update({b1.id:b1})
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self.assertTrue(b1.data is None)
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self.assertTrue(len(b1.parents)==1)
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self.assertTrue("0" in b1.parents)
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b1.data = {"timestamp" : time.time(), "txns" : [1,2,3]}
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b1.addParents({b0.ident:b0}) # updateIdent called with addParent.
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time.sleep(1)
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b2 = Block()
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b2.parents.update({"0":b0})
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b2.id = "2"
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for parentID in b2.parents:
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b2.parents[parentID].children.update({b2.id:b2})
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self.assertTrue(b2.data is None)
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self.assertTrue(len(b2.parents)==1)
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self.assertTrue("0" in b2.parents)
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b2.data = {"timestamp" : time.time(), "txns" : None}
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b2.addParents({b1.ident:b1})
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time.sleep(1)
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b3 = Block()
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b3.parents.update({"1":b1, "2":b2})
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b3.id = "3"
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for parentID in b3.parents:
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b3.parents[parentID].children.update({b3.id:b3})
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self.assertTrue(b3.data is None)
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self.assertTrue(len(b3.parents)==2)
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self.assertTrue("1" in b3.parents)
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self.assertTrue("2" in b3.parents)
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self.assertFalse("0" in b3.parents)
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b3.data = {"timestamp" : time.time(), "txns" : None}
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b3.addParents({b1.ident:b1})
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time.sleep(1)
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b4 = Block()
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b4.parents.update({"2":b2})
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b4.id = "4"
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for parentID in b4.parents:
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b4.parents[parentID].children.update({b4.id:b4})
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self.assertTrue(b4.data is None)
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self.assertTrue(len(b4.parents)==1)
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self.assertTrue("2" in b4.parents)
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b4.data = {"timestamp" : time.time()} # see how sloppy we can be wheeee
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b4.addParents({b2.ident:b2, b3.ident:b3})
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time.sleep(1)
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suite = unittest.TestLoader().loadTestsFromTestCase(Test_Block)
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unittest.TextTestRunner(verbosity=1).run(suite)
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b5 = Block()
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b5.data = {"timestamp" : time.time(), "txns" : "stuff" }
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b5.addParents({b3.ident:b3})
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self.assertTrue(len(b1.parents)==1 and b0.ident in b1.parents)
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self.assertTrue(len(b2.parents)==1 and b1.ident in b2.parents)
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self.assertTrue(len(b3.parents)==1 and b1.ident in b3.parents)
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self.assertTrue(len(b4.parents)==2)
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self.assertTrue(b2.ident in b4.parents and b3.ident in b4.parents)
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self.assertTrue(len(b5.parents)==1 and b3.ident in b5.parents)
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#suite = unittest.TestLoader().loadTestsFromTestCase(Test_Block)
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#unittest.TextTestRunner(verbosity=1).run(suite)
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245
source-code/Spectre/RoBlocks.py
Normal file
245
source-code/Spectre/RoBlocks.py
Normal file
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@ -0,0 +1,245 @@
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'''
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A handler for Block.py that takes a collection of blocks (which
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only reference parents) as input data. It uses a doubly-linked
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tree to determine precedent relationships efficiently, and it can
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use that precedence relationship to produce a reduced/robust pre-
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cedence relationship as output (the spectre precedence relationship
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between blocks.
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Another handler will extract a coherent/robust list of non-conflict-
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ing transactions from a reduced/robust RoBlocks object.
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'''
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from Block import *
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class RoBlocks(object):
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def __init__(self):
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print("Initializing")
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# Initialize a RoBlocks object.
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self.data = None
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self.blocks = {} # Set of blocks (which track parents)
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self.family = {} # Doubly linked list tracks parent-and-child links
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self.invDLL = {} # subset of blocks unlikely to be re-orged
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self.roots = {} # dict {blockIdent : block} root blocks
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self.leaves = {}
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self.antichainCutoff = 600 # stop re-orging after this many layers
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self.pendingVotes = {}
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self.votes = {}
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def _addBlocks(self, blocksIn):
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print("Adding Blocks")
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# Take dict of {blockIdent : block} and call _addBlock on each.
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for b in blocksIn:
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self._addBlock(blocksIn[b])
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def _addBlock(self, b):
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print("Adding block")
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# Take a single block b and add to self.blocks, record family
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# relations, update leaf monitor, update root monitor if nec-
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# essary
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diffDict = {b.ident:b}
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self.blocks.update(diffDict)
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self.family.update({b.ident:{}})
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self.family[b.ident].update({"parents":b.parents, "children":{}})
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for parentIdent in b.parents:
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if parentIdent not in self.family:
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self.family.update({parentIdent:{}})
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if "parents" not in self.family[parentIdent]:
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self.family[parentIdent].update({"parents":{}})
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if "children" not in self.family[parentIdent]:
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self.family[parentIdent].update({"children":{}})
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self.family[parentIdent]["parents"].update(b.parents)
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self.family[parentIdent]["children"].update(diffDict)
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if parentIdent in self.leaves:
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del self.leaves[parentIdent]
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if len(b.parents)==0 and b.ident not in self.roots:
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self.roots.update(diffDict)
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self.leaves.update(diffDict)
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def inPast(self, x, y):
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print("Testing if in past")
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# Return true if y is an ancestor of x
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q = deque()
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for pid in self.blocks[x].parents:
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if pid==y:
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return True
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break
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q.append(pid)
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while(len(q)>0):
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nxtIdent = q.popleft()
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if len(self.blocks[nxtIdent].parents) > 0:
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for pid in self.blocks[nxtIdent].parents:
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if pid==y:
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return True
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break
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q.append(pid)
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return False
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def vote(self):
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print("Voting")
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# Compute partial spectre vote for top several layers of
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# the dag.
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(U, vids) = self.leafBackAntichain()
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self.votes = {}
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q = deque()
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self.pendingVotes = {}
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for i in range(len(U)):
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for leafId in U[i]:
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if i > 0:
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self.sumPendingVotes(leafId, vids)
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for x in U[i]:
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if x != leafId:
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q.append(x)
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while(len(q)>0):
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x = q.popleft()
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if (leafId, leafId, x) not in self.votes:
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self.votes.update({(leafId, leafId, x):1})
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else:
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try:
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assert self.votes[(leafId, leafId, x)]==1
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except AssertionError:
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print("Woops, we found (leafId, leafId, x) as a key in self.votes while running vote(), and it should be +1, but it isn't:\n\n", (leafId, leafId, x), self.votes[(leafId, leafId, x)], "\n\n")
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if (leafId, x, leafId) not in self.votes:
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self.votes.update({(leafId, x, leafId):-1})
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else:
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try:
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assert self.votes[(leafId,x,leafId)]==-1
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except AssertionError:
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print("Woops, we found (leafId, x, leafId) as a key in self.votes while running vote(), and it should be +1, but it isn't:\n\n", (leafId, x, leafId), self.votes[(leafId, x, leafId)], "\n\n")
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self.transmitVote(leafId, leafId, x)
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for pid in self.blocks[x].parents:
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if not self.inPast(leafId, pid) and pid in vids and pid != leafId:
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q.append(pid)
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print(self.votes)
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def sumPendingVotes(self, blockId, vulnIds):
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print("Summing pending votes")
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# For a blockId, take all pending votes for vulnerable IDs (x,y)
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# if the net is positive vote 1, if the net is negative vote -1
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# otherwise vote 0.
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for x in vulnIds:
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for y in vulnIds:
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if (blockId, x, y) in self.pendingVotes:
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if self.pendingVotes[(blockId, x, y)] > 0:
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if (blockId, x, y) not in self.votes:
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self.votes.update({(blockId, x, y):1})
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else:
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try:
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assert self.votes[(blockId,x,y)]==1
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except AssertionError:
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print("Woops, we found (blockId, x, y) as a key in self.votes, and it should be +1, but it isn't:\n\n", (blockId, x, y), self.votes[(blockId, x,y)], "\n\n")
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if (blockId, y, x) not in self.votes:
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self.votes.update({(blockId, y, x):-1})
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else:
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try:
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assert self.votes[(blockId,y,x)]==-1
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except AssertionError:
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print("Woops, we found (blockId, y, x) as a key in self.votes, and it should be -1, but it isn't:\n\n", (blockId, y, x), self.votes[(blockId, y,x)], "\n\n")
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self.transmitVote(blockId, x, y)
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elif self.pendingVotes[(blockId, x, y)] < 0:
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if (blockId, x, y) not in self.votes:
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self.votes.update({(blockId, x, y):-1})
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else:
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try:
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assert self.votes[(blockId,x,y)]==-1
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except AssertionError:
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print("Woops, we found (blockId, x, y) as a key in self.votes, and it should be -1, but it isn't:\n\n", (blockId, x, y), self.votes[(blockId, x,y)], "\n\n")
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if (blockId, y, x) not in self.votes:
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self.votes.update({(blockId, y, x):1})
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else:
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try:
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assert self.votes[(blockId,y,x)]==1
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except AssertionError:
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print("Woops, we found (blockId, y, x) as a key in self.votes, and it should be +1, but it isn't:\n\n", (blockId, x, y), self.votes[(blockId, x,y)], "\n\n")
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self.transmitVote(blockId, y, x)
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else:
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if (blockId, x, y) not in self.votes:
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self.votes.update({(blockId, x, y):0})
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else:
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try:
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assert self.votes[(blockId,x,y)]==0
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except AssertionError:
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print("Woops, we found (blockId, x, y) as a key in self.votes, and it should be 0, but it isn't:\n\n", (blockId, x, y), self.votes[(blockId, x,y)], "\n\n")
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if (blockId, y, x) not in self.votes:
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self.votes.update({(blockId, y, x):0})
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else:
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try:
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assert self.votes[(blockId,y,x)]==0
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except AssertionError:
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print("Woops, we found (blockId, y, x) as a key in self.votes, and it should be 0, but it isn't:\n\n", (blockId, y, x), self.votes[(blockId, y,x)], "\n\n")
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def transmitVote(self, v, x, y):
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print("Transmitting votes")
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q = deque()
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for pid in self.blocks[v].parents:
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q.append(pid)
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while(len(q)>0):
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print("Length of queue = ", len(q))
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nxtPid = q.popleft()
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if (nxtPid, x, y) not in self.pendingVotes:
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self.pendingVotes.update({(nxtPid,x,y):1})
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self.pendingVotes.update({(nxtPid,y,x):-1})
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else:
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self.pendingVotes[(nxtPid,x,y)] += 1
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self.pendingVotes[(nxtPid,y,x)] -= 1
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if len(self.blocks[nxtPid].parents) > 0:
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for pid in self.blocks[nxtPid].parents:
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if pid != nxtPid:
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q.append(pid)
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def leafBackAntichain(self):
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print("Computing antichain")
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temp = copy.deepcopy(self)
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decomposition = []
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vulnIdents = None
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decomposition.append(temp.leaves)
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vulnIdents = decomposition[-1]
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temp = temp.pruneLeaves()
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while(len(temp.blocks)>0 and len(decomposition) < self.antichainCutoff):
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decomposition.append(temp.leaves)
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for xid in decomposition[-1]:
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if xid not in vulnIdents:
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vulnIdents.update({xid:decomposition[-1][xid]})
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temp = temp.pruneLeaves()
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return decomposition, vulnIdents
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def pruneLeaves(self):
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print("Pruning leaves")
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out = RoBlocks()
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q = deque()
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for rootIdent in self.roots:
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q.append(rootIdent)
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while(len(q)>0):
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thisIdent = q.popleft()
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if thisIdent not in self.leaves:
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out._addBlock(self.blocks[thisIdent])
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for chIdent in self.family[thisIdent]["children"]:
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q.append(chIdent)
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return out
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class Test_RoBlock(unittest.TestCase):
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def test_RoBlocks(self):
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R = RoBlocks()
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b = Block()
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b.data = "zirconium encrusted tweezers"
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b._recomputeIdent()
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R._addBlock(b)
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b = Block()
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b.data = "brontosaurus slippers cannot exist"
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b.addParents(R.leaves)
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R._addBlock(b)
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R.vote()
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suite = unittest.TestLoader().loadTestsFromTestCase(Test_RoBlock)
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unittest.TextTestRunner(verbosity=1).run(suite)
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