def fork(self, height):
import shutil
filename = "blockchain_fork_%d"%height
new_path = os.path.join(util.get_headers_dir(self.config), filename)
shutil.copy(self.path(), new_path)
with open(new_path, 'rb+') as f:
f.seek((height) * 80)
f.truncate()
f.close()
return filename
def read_blockchains(config):
blockchains[0] = Blockchain(config, 0, None)
fdir = os.path.join(util.get_headers_dir(config), 'forks')
if not os.path.exists(fdir):
os.mkdir(fdir)
l = filter(lambda x: x.startswith('fork_'), os.listdir(fdir))
l = sorted(l, key=lambda x: int(x.split('_')[1]))
for filename in l:
checkpoint = int(filename.split('_')[2])
parent_id = int(filename.split('_')[1])
b = Blockchain(config, checkpoint, parent_id)
blockchains[b.checkpoint] = b
return blockchains
def read_blockchains(config):
blockchains[0] = Blockchain(config, 0, None)
fdir = os.path.join(util.get_headers_dir(config), 'forks')
if not os.path.exists(fdir):
os.mkdir(fdir)
l = filter(lambda x: x.startswith('fork_'), os.listdir(fdir))
l = sorted(l, key = lambda x: int(x.split('_')[1]))
for filename in l:
checkpoint = int(filename.split('_')[2])
parent_id = int(filename.split('_')[1])
b = Blockchain(config, checkpoint, parent_id)
blockchains[b.checkpoint] = b
return blockchains
def fork_and_save(self):
import shutil
self.print_error("save fork")
height = self.checkpoint
filename = "blockchain_fork_%d" % height
new_path = os.path.join(util.get_headers_dir(self.config), filename)
shutil.copy(self.path(), new_path)
with open(new_path, 'rb+') as f:
f.seek((height) * 80)
f.truncate()
self.filename = filename
self.is_saved = True
for h in self.headers:
self.write_header(h)
self.headers = []
def path(self):
d = util.get_headers_dir(self.config)
filename = 'blockchain_headers' if self.parent_id is None else os.path.join(
'forks', 'fork_%d_%d' % (self.parent_id, self.checkpoint))
return os.path.join(d, filename)
def path(self):
d = util.get_headers_dir(self.config)
return os.path.join(d, self.filename)
def path(self):
d = util.get_headers_dir(self.config)
filename = 'blockchain_headers' if self.parent_id is None else os.path.join('forks', 'fork_%d_%d'%(self.parent_id, self.checkpoint))
return os.path.join(d, filename)
