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use pool

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norohind 2024-08-27 23:43:24 +02:00
parent 9ffff121ff
commit 6711b2dd80
1 changed files with 103 additions and 95 deletions
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88
model/postgres_model.py
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@ -4,6 +4,7 @@ import datetime
import psycopg2.extensions import psycopg2.extensions
import psycopg2.extras import psycopg2.extras
from psycopg2 import pool
import config import config
from .sqlite_cache import cache from .sqlite_cache import cache
@ -16,31 +17,13 @@ logger = get_main_logger()
logger.propagate = False logger.propagate = False
def errors_catcher(func: callable) -> callable:
def decorated(*args, **kwargs):
self: PostgresModel = args[0]
try:
result = func(*args, **kwargs)
except psycopg2.InterfaceError:
self.open_model() # args[0] - self
result = func(*args, **kwargs)
except Exception:
# just reset transaction at least
self.db.rollback()
raise
return result
return decorated
class PostgresModel(AbstractModel): class PostgresModel(AbstractModel):
db: psycopg2.extensions.connection db_pool: psycopg2.extensions.connection
def open_model(self): def open_model(self):
self.db: psycopg2.extensions.connection = psycopg2.connect( self.db_pool: pool.ThreadedConnectionPool = pool.ThreadedConnectionPool(
minconn=1,
maxconn=10,
user=config.postgres_username, user=config.postgres_username,
password=config.postgres_password, password=config.postgres_password,
host=config.postgres_hostname, host=config.postgres_hostname,
@ -48,17 +31,17 @@ class PostgresModel(AbstractModel):
database=config.postgres_database_name, database=config.postgres_database_name,
cursor_factory=psycopg2.extras.DictCursor) cursor_factory=psycopg2.extras.DictCursor)
logger.info(f'Connected to {self.db.dsn}') conn: psycopg2.extensions.connection = self.db_pool.getconn()
logger.info(f'Connected to {conn.dsn}')
with self.db: with conn:
with self.db.cursor() as cursor: with conn.cursor() as cursor:
cursor.execute(postgres_sql_requests.schema_create) # schema creation cursor.execute(postgres_sql_requests.schema_create) # schema creation
def close_model(self): def close_model(self):
self.db.close() self.db_pool.closeall()
logger.info(f'Connection to {self.db.dsn} closed successfully') logger.info(f'Connection to db closed successfully')
@errors_catcher
def get_activity_changes(self, platform: str, leaderboard_type: str, limit: int, low_timestamp, high_timestamp)\ def get_activity_changes(self, platform: str, leaderboard_type: str, limit: int, low_timestamp, high_timestamp)\
-> list: -> list:
cache_key: str = f'{platform}_{leaderboard_type}_{limit}_{low_timestamp}_{high_timestamp}' cache_key: str = f'{platform}_{leaderboard_type}_{limit}_{low_timestamp}_{high_timestamp}'
@ -84,7 +67,9 @@ class PostgresModel(AbstractModel):
if limit is None: if limit is None:
limit = 10 limit = 10
with self.db.cursor(cursor_factory=psycopg2.extras.RealDictCursor) as cursor: conn = self.db_pool.getconn()
try:
with conn.cursor(cursor_factory=psycopg2.extras.RealDictCursor) as cursor:
cursor.execute(postgres_sql_requests.select_activity_pretty_names, { cursor.execute(postgres_sql_requests.select_activity_pretty_names, {
'LB_type': utils.LeaderboardTypes(leaderboard_type.lower()).value, 'LB_type': utils.LeaderboardTypes(leaderboard_type.lower()).value,
'platform': utils.Platform(platform.upper()).value, 'platform': utils.Platform(platform.upper()).value,
@ -100,7 +85,9 @@ class PostgresModel(AbstractModel):
return result return result
@errors_catcher finally:
self.db_pool.putconn(conn)
def insert_leaderboard_db(self, leaderboard_list: dict) -> int: def insert_leaderboard_db(self, leaderboard_list: dict) -> int:
""" """
Takes leaderboard as list, it platform, type, db connection and insert leaderboard to DB Takes leaderboard as list, it platform, type, db connection and insert leaderboard to DB
@ -115,7 +102,9 @@ class PostgresModel(AbstractModel):
action_id: int # not last, current that we will use action_id: int # not last, current that we will use
with self.db.cursor() as cursor: conn = self.db_pool.getconn()
try:
with conn.cursor() as cursor:
cursor.execute(postgres_sql_requests.create_new_action_id, {'LB_type': LB_type, 'platform': platform}) cursor.execute(postgres_sql_requests.create_new_action_id, {'LB_type': LB_type, 'platform': platform})
action_id: int = cursor.fetchone()[0] action_id: int = cursor.fetchone()[0]
@ -125,12 +114,14 @@ class PostgresModel(AbstractModel):
cursor.executemany(postgres_sql_requests.insert_leaderboard, leaderboard) cursor.executemany(postgres_sql_requests.insert_leaderboard, leaderboard)
self.db.commit() conn.commit()
cache.delete_all() # drop cache cache.delete_all() # drop cache
return action_id return action_id
@errors_catcher finally:
self.db_pool.putconn(conn)
def get_diff_action_id(self, action_id: int) -> list: def get_diff_action_id(self, action_id: int) -> list:
""" """
Takes action_id and returns which squadrons has been changed in leaderboard as in action_id and Takes action_id and returns which squadrons has been changed in leaderboard as in action_id and
@ -148,7 +139,9 @@ class PostgresModel(AbstractModel):
logger.debug(f'Not cached result for {cache_key}') logger.debug(f'Not cached result for {cache_key}')
with self.db.cursor(cursor_factory=psycopg2.extras.RealDictCursor) as cursor: conn = self.db_pool.getconn()
try:
with conn.cursor(cursor_factory=psycopg2.extras.RealDictCursor) as cursor:
cursor.execute(postgres_sql_requests.select_diff_by_action_id, {'action_id': action_id}) cursor.execute(postgres_sql_requests.select_diff_by_action_id, {'action_id': action_id})
result: list = cursor.fetchall() result: list = cursor.fetchall()
@ -157,7 +150,9 @@ class PostgresModel(AbstractModel):
return result return result
@errors_catcher finally:
self.db_pool.putconn(conn)
def get_leaderboard_sum_history(self, platform: str, leaderboard_type: str) -> list[dict]: def get_leaderboard_sum_history(self, platform: str, leaderboard_type: str) -> list[dict]:
cache_key = f'sum_history_{platform}_{leaderboard_type}' cache_key = f'sum_history_{platform}_{leaderboard_type}'
cached_result: typing.Union[str, None] = cache.get(cache_key) cached_result: typing.Union[str, None] = cache.get(cache_key)
@ -166,7 +161,9 @@ class PostgresModel(AbstractModel):
logger.debug(f'Cached result for {cache_key}') logger.debug(f'Cached result for {cache_key}')
return json.loads(cached_result) return json.loads(cached_result)
with self.db.cursor(cursor_factory=psycopg2.extras.RealDictCursor) as cursor: conn = self.db_pool.getconn()
try:
with conn.cursor(cursor_factory=psycopg2.extras.RealDictCursor) as cursor:
cursor.execute( cursor.execute(
postgres_sql_requests.select_leaderboard_sum_history, postgres_sql_requests.select_leaderboard_sum_history,
{ {
@ -180,7 +177,9 @@ class PostgresModel(AbstractModel):
return result return result
@errors_catcher finally:
self.db_pool.putconn(conn)
def get_leaderboard_by_action_id(self, action_id: int) -> list[dict]: def get_leaderboard_by_action_id(self, action_id: int) -> list[dict]:
cache_key = f'leaderboard_by_action_id_{action_id}' cache_key = f'leaderboard_by_action_id_{action_id}'
@ -190,7 +189,9 @@ class PostgresModel(AbstractModel):
logger.debug(f'Cached result for {cache_key}') logger.debug(f'Cached result for {cache_key}')
return json.loads(cached_result) return json.loads(cached_result)
with self.db.cursor(cursor_factory=psycopg2.extras.RealDictCursor) as cursor: conn = self.db_pool.getconn()
try:
with conn.cursor(cursor_factory=psycopg2.extras.RealDictCursor) as cursor:
cursor.execute( cursor.execute(
postgres_sql_requests.select_leaderboard_by_action_id, postgres_sql_requests.select_leaderboard_by_action_id,
{ {
@ -205,7 +206,9 @@ class PostgresModel(AbstractModel):
return result return result
@errors_catcher finally:
self.db_pool.putconn(conn)
def get_latest_leaderboard(self, platform: str, leaderboard_type: str) -> list[dict]: def get_latest_leaderboard(self, platform: str, leaderboard_type: str) -> list[dict]:
cache_key = f'latest_leaderboard_{platform}_{leaderboard_type}' cache_key = f'latest_leaderboard_{platform}_{leaderboard_type}'
cached_result: typing.Union[str, None] = cache.get(cache_key) cached_result: typing.Union[str, None] = cache.get(cache_key)
@ -216,7 +219,9 @@ class PostgresModel(AbstractModel):
logger.debug(f'Not cached result for {cache_key}') logger.debug(f'Not cached result for {cache_key}')
with self.db.cursor(cursor_factory=psycopg2.extras.RealDictCursor) as cursor: conn = self.db_pool.getconn()
try:
with conn.cursor(cursor_factory=psycopg2.extras.RealDictCursor) as cursor:
cursor.execute( cursor.execute(
postgres_sql_requests.select_latest_leaderboard, postgres_sql_requests.select_latest_leaderboard,
{ {
@ -230,3 +235,6 @@ class PostgresModel(AbstractModel):
cache.set(cache_key, json.dumps(result)) cache.set(cache_key, json.dumps(result))
return result return result
finally:
self.db_pool.putconn(conn)