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Add InfluxDB 3 Core support.

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This commit is contained in:
Denis Volkov
2026-04-09 15:14:14 +03:00
parent dcf534a0fe
commit a2bef13bc8
4 changed files with 111 additions and 25 deletions
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.env_example
+6 -1
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@@ -15,4 +15,9 @@ AGE_PASS=pass
AGE_HOST=localhost
AGE_PORT=5432
AGE_DB=university
AGE_GRAPH_NAME=movie_graph
AGE_GRAPH_NAME=movie_graph
INFLUX_ACTIVE=false
INFLUXDB3_HOST=http://localhost:8181
INFLUXDB3_AUTH_TOKEN=your_token
INFLUXDB3_DATABASE=sensors
README.md
+11 -5
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@@ -1,14 +1,14 @@
### Пример приложения для работы с БД
Небольшое десктоп-приложение на PyQt5 для работы с PostgreSQL, Neo4j и Apache AGE.
Небольшое десктоп-приложение на PyQt5 для работы с PostgreSQL, Neo4j, Apache AGE и InfluxDB 3 Core.
### Стек
- PyQt5 — графический интерфейс
- PostgreSQL (psycopg2) — реляционная БД для пользователей
- Neo4j — графовая БД для фильмов
- Apache AGE — графовая модель поверх PostgreSQL для фильмов
- python-dotenv — загрузка параметров подключения из файла `.env`
- Neo4j — графовая БД
- Apache AGE — графовая БД в рамках PostgreSQL
- InfluxDB 3 Core — БД временных рядов
### Скриншоты
@@ -26,6 +26,7 @@
- Установленный PostgreSQL и доступ к серверу БД
- Установленный Neo4j и загруженный обучающий граф фильмов (Movie Graph example)
- Для Apache AGE: установленное расширение `age` в PostgreSQL и доступ к базе, где оно включено
- Для InfluxDB 3 Core: запущенный сервер, заранее созданная база и токен с правами на запись и чтение
### Настройка окружения
@@ -53,6 +54,11 @@ AGE_HOST=localhost
AGE_PORT=5432
AGE_DB=university
AGE_GRAPH_NAME=movie_graph
INFLUX_ACTIVE=false # включить InfluxDB 3 Core, установив true
INFLUXDB3_HOST=http://localhost:8181
INFLUXDB3_AUTH_TOKEN=your_token
INFLUXDB3_DATABASE=sensors
```
2. Создайте и активируйте виртуальное окружение:
@@ -87,4 +93,4 @@ pip install -r requirements.txt
py main.py
```
Приложение подключится к PostgreSQL, создаст БД/таблицу и тестовые данные (если их еще нет), выполнит запрос к Neo4j (если активно) и/или к Apache AGE (если активно), а затем отобразит результаты в отдельных окнах.
Приложение подключится к PostgreSQL, создаст БД/таблицу и тестовые данные (если их еще нет), выполнит запрос к Neo4j, Apache AGE и/или InfluxDB 3 Core (если они активны), а затем отобразит результаты в отдельных окнах.
main.py
+93 -19
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@@ -3,6 +3,7 @@ import sys
import psycopg2
from dotenv import load_dotenv
from influxdb_client_3 import InfluxDBClient3
from neo4j import GraphDatabase
from psycopg2 import sql
from psycopg2.errors import DuplicateDatabase
@@ -30,6 +31,11 @@ AGE_PORT = os.getenv("AGE_PORT", POSTGRES_PORT)
AGE_DB = os.getenv("AGE_DB", POSTGRES_DB)
AGE_GRAPH_NAME = os.getenv("AGE_GRAPH_NAME", "movie_graph")
INFLUX_ACTIVE = os.getenv("INFLUX_ACTIVE", "false").lower() == "true"
INFLUXDB3_HOST = os.getenv("INFLUXDB3_HOST", "http://localhost:8181")
INFLUXDB3_AUTH_TOKEN = os.getenv("INFLUXDB3_AUTH_TOKEN")
INFLUXDB3_DATABASE = os.getenv("INFLUXDB3_DATABASE", "sensors")
USER_SEED_DATA = [
(1, "Ivan", 15),
(2, "Igor", 22),
@@ -154,6 +160,48 @@ def select_age_movies(cur):
return [str(row[0]).strip('"') for row in cur.fetchall()]
def connect_influx():
return InfluxDBClient3(
host=INFLUXDB3_HOST,
token=INFLUXDB3_AUTH_TOKEN,
database=INFLUXDB3_DATABASE,
)
def insert_influx_sensor_data(client):
client.write(
"""temperature,location=room1,sensor_id=s01 value=22.5
temperature,location=room2,sensor_id=s02 value=24.1
temperature,location=room1,sensor_id=s01 value=23.0
humidity,location=room1,sensor_id=s01 value=55.2
humidity,location=room2,sensor_id=s02 value=60.8"""
)
def select_influx_sensor_data(client):
table = client.query(
query="""
SELECT measurement, location, sensor_id, value, CAST(time AS STRING) AS time
FROM (
SELECT 'temperature' AS measurement, location, sensor_id, value, time FROM temperature
UNION ALL
SELECT 'humidity' AS measurement, location, sensor_id, value, time FROM humidity
)
ORDER BY time, measurement
""",
language="sql",
mode="all",
)
rows = table.to_pylist()
if not rows:
return ["measurement", "location", "sensor_id", "value", "time"], []
headers = list(rows[0].keys())
values = [tuple(row.get(header) for header in headers) for row in rows]
return headers, values
def load_users():
admin_conn = connect_postgres("postgres")
try:
@@ -180,7 +228,7 @@ class MainWindow(QMainWindow):
central_widget = QWidget(self)
self.setCentralWidget(central_widget)
grid_layout = QGridLayout(self)
grid_layout = QGridLayout()
central_widget.setLayout(grid_layout)
self.table = QTableWidget(self)
@@ -206,40 +254,49 @@ class MainWindow(QMainWindow):
self.table.resizeColumnsToContents()
class GraphWindow(QWidget):
def __init__(self, title, parent_window):
class DataWindow(QWidget):
def __init__(self, title, headers, parent_window, window_index=0):
super().__init__()
self.setWindowTitle(title)
self.parent_window = parent_window
self.window_index = window_index
grid_layout = QGridLayout(self)
self.setLayout(grid_layout)
self.table = QTableWidget(self)
self.table.setColumnCount(1)
self.table.setColumnCount(len(headers))
self.table.setRowCount(0)
self.table.setHorizontalHeaderLabels(["Info"])
self.table.horizontalHeaderItem(0).setToolTip("Info")
self.table.horizontalHeaderItem(0).setTextAlignment(Qt.AlignHCenter)
self.table.setHorizontalHeaderLabels(headers)
for index, header in enumerate(headers):
self.table.horizontalHeaderItem(index).setToolTip(header)
self.table.horizontalHeaderItem(index).setTextAlignment(Qt.AlignHCenter)
grid_layout.addWidget(self.table, 0, 0)
self.position_relative_to_parent(parent_window)
self.position_relative_to_parent()
def position_relative_to_parent(self, parent_window):
parent_frame = parent_window.frameGeometry()
self.move(parent_frame.x() + parent_frame.width() + 5, parent_frame.y())
def position_relative_to_parent(self):
parent = self.parent_window.frameGeometry()
screen = QApplication.primaryScreen().availableGeometry()
self.move(
max(screen.x(), min(parent.right() + 6 + self.window_index * (self.width() + 5), screen.right() - self.width() - 10)),
max(screen.y(), min(parent.y(), screen.bottom() - self.height() - 10)),
)
def load_data(self, rows):
self.table.setRowCount(len(rows))
for row_number, item in enumerate(rows):
self.table.setItem(row_number, 0, QTableWidgetItem(str(item)))
for row_number, row in enumerate(rows):
values = row if isinstance(row, (list, tuple)) else [row]
for column_number, value in enumerate(values):
self.table.setItem(row_number, column_number, QTableWidgetItem(str(value)))
self.table.resizeColumnsToContents()
self.table.resizeRowsToContents()
margins = self.layout().contentsMargins()
width = (
self.table.verticalHeader().width()
+ self.table.columnWidth(0)
+ sum(self.table.columnWidth(column) for column in range(self.table.columnCount()))
+ self.table.frameWidth() * 2
+ margins.left()
+ margins.right()
@@ -254,7 +311,11 @@ class GraphWindow(QWidget):
+ 24
)
self.resize(min(max(width, 220), 700), min(max(height, 120), 500))
screen_geometry = QApplication.primaryScreen().availableGeometry()
max_width = max(screen_geometry.width() - 40, 220)
max_height = max(screen_geometry.height() - 40, 120)
self.resize(min(max(width, 220), max_width), min(max(height, 120), max_height))
self.position_relative_to_parent()
if __name__ == "__main__":
@@ -269,8 +330,8 @@ if __name__ == "__main__":
if NEO_ACTIVE:
try:
neo_window = GraphWindow("neo4j", main_window)
neo_window.load_data(fetch_neo_movies())
neo_window = DataWindow("neo4j", ["Info"], main_window, len(graph_windows))
neo_window.load_data([(title,) for title in fetch_neo_movies()])
neo_window.show()
graph_windows.append(neo_window)
except Exception as error:
@@ -291,11 +352,24 @@ if __name__ == "__main__":
create_age_movies(cur)
age_movies = select_age_movies(cur)
age_window = GraphWindow("apache age", main_window)
age_window.load_data(age_movies)
age_window = DataWindow("apache age", ["Info"], main_window, len(graph_windows))
age_window.load_data([(title,) for title in age_movies])
age_window.show()
graph_windows.append(age_window)
except Exception as error:
print(f"Apache AGE load failed: {error}")
if INFLUX_ACTIVE:
try:
with connect_influx() as influx_client:
insert_influx_sensor_data(influx_client)
influx_headers, influx_rows = select_influx_sensor_data(influx_client)
influx_window = DataWindow("influxdb 3 core", influx_headers, main_window, len(graph_windows))
influx_window.load_data(influx_rows)
influx_window.show()
graph_windows.append(influx_window)
except Exception as error:
print(f"InfluxDB 3 Core load failed: {error}")
sys.exit(app.exec())
requirements.txt
+1
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@@ -2,3 +2,4 @@ psycopg2-binary
neo4j
PyQt5
python-dotenv
influxdb3-python