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failover.py
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#VIT Witness Failover
import os
import sys
import json
import datetime
import time
from pprint import pprint
from beem.witness import Witness
from beem import Steem
from beem.instance import set_shared_steem_instance
from beem.transactionbuilder import TransactionBuilder
from beembase import operations
from beem.amount import Amount
from beem.asset import Asset
from dotenv import load_dotenv
import status_logger
load_dotenv()
#Variables:
CUSTOM_CHAINS = json.loads(os.environ.get('CUSTOM_CHAINS', '{}'))
NATIVE_SYMBOL = os.environ.get('NATIVE_SYMBOL', 'VIT')
NATIVE_PREFIX = os.environ.get('NATIVE_PREFIX', 'VIT')
NATIVE_VESTED = os.environ.get('NATIVE_VESTED', 'VESTS')
UNLOCK = os.getenv('UNLOCK')
ACCT = os.getenv('ACCOUNT')
NO_BROADCAST = bool(int(os.getenv('NO_BROADCAST')))
P_THRESHOLD = int(os.getenv('P_THRESHOLD'))
B_THRESHOLD = int(os.getenv('B_THRESHOLD'))
BACKUP_KEY = os.getenv('BACKUP_KEY')
WIF = os.getenv('WIF')
stm = Steem(
node=["https://peer.vit.tube/"],
bundle=True,
blocking="head",
nobroadcast=NO_BROADCAST, #set True for testing
custom_chains=CUSTOM_CHAINS,
keys={'active': WIF},
)
#stm.wallet.unlock(UNLOCK)
while True:
try:
set_shared_steem_instance(stm)
currentdatetime = datetime.datetime.now()
w1 = Witness(ACCT)
json_string = json.dumps(w1.json(), indent=4)
data = json.loads(json_string)
total_missed = data["total_missed"]
if total_missed >= P_THRESHOLD:
#Disable witness.
tx = TransactionBuilder(steem_instance=stm)
update_witness = {
"owner": ACCT,
"url": "No website yet",
"block_signing_key": NATIVE_PREFIX + '1111111111111111111111111111111114T1Anm',
"props": {
"account_creation_fee": Amount("0.100 %s" % (NATIVE_SYMBOL)),
"maximum_block_size":131072,
},
"fee": Amount("0.000 %s" % (NATIVE_SYMBOL)),
"prefix": NATIVE_PREFIX,
}
op = operations.Witness_update(**update_witness)
tx.appendOps(op)
#tx.appendSigner(ACCT, "active")
tx.appendWif(WIF)
signed_tx = tx.sign()
broadcast_tx = tx.broadcast()
status_logger.logger.warning("Total missed at or above threshold. Disabling primary witness server. \nOperation: " + json.dumps(broadcast_tx, indent=4))
break
else:
status_logger.logger.info("Witness " + ACCT + " current total missed: " + str(total_missed) + "\nPrimary witness server operational\n--------------------------")
time.sleep(60) #Pause script for 60 seconds.
except KeyboardInterrupt:
sys.exit()
except Exception as WitnessDoesNotExistsException:
status_logger.logger.exception("Exception occured\n")
status_logger.logger.info("Reconnecting...")
stm = Steem(
node=["https://peer.vit.tube/"],
bundle=True,
blocking="head",
nobroadcast=NO_BROADCAST, #set True for testing
custom_chains=CUSTOM_CHAINS,
keys={'active': WIF},
)
#stm.wallet.unlock(UNLOCK)
except Exception as e:
status_logger.logger.exception("Exception occured\n")
sys.exit()
# Enable backup witness server.
try:
# Pause script momentarily after disabling primary witness.
time.sleep(60)
tx = TransactionBuilder(steem_instance=stm)
update_witness = {
"owner": ACCT,
"url": "No website yet",
"block_signing_key": NATIVE_PREFIX + BACKUP_KEY,
"props": {
"account_creation_fee": Amount("0.100 %s" % (NATIVE_SYMBOL)),
"maximum_block_size":131072,
},
"fee": Amount("0.000 %s" % (NATIVE_SYMBOL)),
"prefix": NATIVE_PREFIX,
}
op = operations.Witness_update(**update_witness)
tx.appendOps(op)
#tx.appendSigner(ACCT, "active")
tx.appendWif(WIF)
signed_tx = tx.sign()
broadcast_tx = tx.broadcast()
status_logger.logger.info("Activated Backup Witness Server \nOperation: " + json.dumps(broadcast_tx, indent=4))
time.sleep(10) #Seconds you want to wait before you start monitoring the backup server.
except Exception as e:
status_logger.logger.exception("Exception occured\n")
sys.exit()
while True:
try:
set_shared_steem_instance(stm)
currentdatetime = datetime.datetime.now()
w1 = Witness(ACCT)
json_string = json.dumps(w1.json(), indent=4)
data = json.loads(json_string)
total_missed = data["total_missed"]
if total_missed >= B_THRESHOLD:
#Disable witness.
tx = TransactionBuilder(steem_instance=stm)
update_witness = {
"owner": ACCT,
"url": "No website yet",
"block_signing_key": NATIVE_PREFIX + '1111111111111111111111111111111114T1Anm',
"props": {
"account_creation_fee": Amount("0.100 %s" % (NATIVE_SYMBOL)),
"maximum_block_size":131072,
},
"fee": Amount("0.000 %s" % (NATIVE_SYMBOL)),
"prefix": NATIVE_PREFIX,
}
op = operations.Witness_update(**update_witness)
tx.appendOps(op)
#tx.appendSigner(ACCT, "active")
tx.appendWif(WIF)
signed_tx = tx.sign()
broadcast_tx = tx.broadcast()
status_logger.logger.warning("Total missed at or above threshold. Disabling backup witness server. \nOperation: " + json.dumps(broadcast_tx, indent=4))
sys.exit()
else:
status_logger.logger.info("Witness " + ACCT + " current total missed: " + str(total_missed) + "\nBackup witness server operational\n--------------------------")
time.sleep(60) #Pause script for 60 seconds.
except KeyboardInterrupt:
sys.exit()
except Exception as WitnessDoesNotExistsException:
status_logger.logger.exception("Exception occured\n")
status_logger.logger.info("Reconnecting...")
stm = Steem(
node=["https://peer.vit.tube/"],
bundle=True,
blocking="head",
nobroadcast=NO_BROADCAST, #set True for testing
custom_chains=CUSTOM_CHAINS,
keys={'active': WIF},
)
#stm.wallet.unlock(UNLOCK)
except Exception as e:
status_logger.logger.exception("Exception occured\n")
sys.exit()