mirror of
https://github.com/aljazceru/python-teos.git
synced 2025-12-17 22:24:23 +01:00
a0538739d2
The difference between master and the old data-persistence branch was huge, seems more effective to manually cherry pick the changes and integrate them
82 lines
2.5 KiB
Python
82 lines
2.5 KiB
Python
import json
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import plyvel
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from pisa.logger import Logger
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from pisa.conf import WATCHER_PREFIX, RESPONDER_PREFIX, WATCHER_LAST_BLOCK_KEY, RESPONDER_LAST_BLOCK_KEY
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logger = Logger("Daemon")
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class DBManager:
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def __init__(self, db_path):
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try:
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self.db = plyvel.DB(db_path)
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except plyvel.Error as e:
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if 'create_if_missing is false' in str(e):
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logger.info("No db found. Creating a fresh one")
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self.db = plyvel.DB(db_path, create_if_missing=True)
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def load_appointments_db(self, prefix):
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data = {}
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for k, v in self.db.iterator(prefix=prefix):
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# Get uuid and appointment_data from the db
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uuid = k[1:].decode('utf-8')
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data[uuid] = json.loads(v)
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return data
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def get_last_known_block(self, prefix):
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last_block = self.db.get(prefix)
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if last_block:
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last_block = last_block.decode('utf-8')
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return last_block
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def create_entry(self, key, value, prefix=None):
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if isinstance(prefix, str):
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key = prefix + key
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key = key.encode('utf-8')
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value = value.encode('utf-8')
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self.db.put(key, value)
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def delete_entry(self, key, prefix=None):
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if isinstance(prefix, str):
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key = prefix + key
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key = key.encode('utf-8')
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self.db.delete(key)
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def load_watcher_appointments(self):
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return self.load_appointments_db(prefix=WATCHER_PREFIX)
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def load_responder_jobs(self):
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return self.load_appointments_db(prefix=RESPONDER_PREFIX)
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def store_watcher_appointment(self, uuid, appointment):
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self.create_entry(uuid, appointment, prefix=WATCHER_PREFIX)
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logger.info("Adding appointment to Watchers's db", uuid=uuid)
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def store_responder_job(self, uuid, job):
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self.create_entry(uuid, job, prefix=RESPONDER_PREFIX)
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logger.info("Adding appointment to Responder's db", uuid=uuid)
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def delete_watcher_appointment(self, uuid):
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self.delete_entry(uuid, prefix=WATCHER_PREFIX)
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logger.info("Deleting appointment from Watcher's db", uuid=uuid)
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def delete_responder_job(self, uuid):
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self.delete_entry(uuid, prefix=RESPONDER_PREFIX)
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logger.info("Deleting appointment from Responder's db", uuid=uuid)
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def store_last_block_watcher(self, block_hash):
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self.create_entry(WATCHER_LAST_BLOCK_KEY, block_hash)
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def store_last_block_responder(self, block_hash):
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self.create_entry(RESPONDER_LAST_BLOCK_KEY, block_hash)
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