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functional system simclient<-> listener<->server

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olaf
2025-07-15 15:37:16 +00:00
parent f37744b31e
commit 84a92ab9c2
5 changed files with 145 additions and 24 deletions
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52
listener/listener.py
View File

@@ -1,19 +1,26 @@
import os
import json
import logging
import paho.mqtt.client as mqtt
from sqlalchemy import create_engine
from sqlalchemy import create_engine, func
from sqlalchemy.orm import sessionmaker
from models.models import Client
from dotenv import load_dotenv
load_dotenv("/workspace/.env")
# ENV-abhängige Konfiguration
ENV = os.getenv("ENV", "development")
LOG_LEVEL = os.getenv("LOG_LEVEL", "INFO" if ENV == "production" else "DEBUG")
DB_URL = os.environ.get(
"DB_CONN", "mysql+pymysql://user:password@db/infoscreen")
# Logging
logging.basicConfig(level=logging.INFO,
logging.basicConfig(level=getattr(logging, LOG_LEVEL.upper(), logging.INFO),
format='%(asctime)s [%(levelname)s] %(message)s')
# DB-Konfiguration (Beispiel: MariaDB/MySQL, anpassen!)
DB_URL = os.environ.get(
"DB_URL", "mysql+pymysql://user:password@db/infoscreen")
# DB-Konfiguration
engine = create_engine(DB_URL)
Session = sessionmaker(bind=engine)
@@ -22,16 +29,31 @@ Session = sessionmaker(bind=engine)
def on_message(client, userdata, msg):
topic = msg.topic
try:
# Heartbeat-Handling
if topic.startswith("infoscreen/") and topic.endswith("/heartbeat"):
uuid = topic.split("/")[1]
session = Session()
client_obj = session.query(Client).filter_by(uuid=uuid).first()
if client_obj:
from sqlalchemy import func
client_obj.last_alive = func.current_timestamp()
session.commit()
logging.info(
f"Heartbeat von {uuid} empfangen, last_alive aktualisiert.")
session.close()
return
# Discovery-Handling
payload = json.loads(msg.payload.decode())
logging.info(f"Discovery empfangen: {payload}")
session = Session()
# Prüfen, ob Client schon existiert
existing = session.query(Client).filter_by(
client_id=payload["client_id"]).first()
uuid=payload["uuid"]).first()
if not existing:
new_client = Client(
client_id=payload.get("client_id"),
uuid=payload.get("uuid"),
hardware_token=payload.get("hardware_token"),
ip=payload.get("ip"),
type=payload.get("type"),
@@ -43,10 +65,14 @@ def on_message(client, userdata, msg):
)
session.add(new_client)
session.commit()
logging.info(f"Neuer Client registriert: {payload['client_id']}")
logging.info(f"Neuer Client registriert: {payload['uuid']}")
else:
logging.info(f"Client bereits bekannt: {payload['client_id']}")
logging.info(f"Client bereits bekannt: {payload['uuid']}")
session.close()
# Discovery-ACK senden
ack_topic = f"infoscreen/{payload['uuid']}/discovery_ack"
client.publish(ack_topic, json.dumps({"status": "ok"}))
logging.info(f"Discovery-ACK gesendet an {ack_topic}")
except Exception as e:
logging.error(f"Fehler bei Verarbeitung: {e}")
@@ -56,7 +82,9 @@ def main():
mqtt_client.on_message = on_message
mqtt_client.connect("mqtt", 1883)
mqtt_client.subscribe("infoscreen/discovery")
logging.info("Listener gestartet und abonniert auf infoscreen/discovery")
mqtt_client.subscribe("infoscreen/+/heartbeat")
logging.info(
"Listener gestartet und abonniert auf infoscreen/discovery und infoscreen/+/heartbeat")
mqtt_client.loop_forever()

1
listener/requirements.txt
View File

@@ -1,3 +1,4 @@
paho-mqtt>=2.0
SQLAlchemy>=2.0
pymysql
python-dotenv

11
models/models.py
View File

@@ -38,9 +38,14 @@ class ClientGroup(Base):
class Client(Base):
__tablename__ = 'clients'
uuid = Column(String(36), primary_key=True, nullable=False)
hardware_hash = Column(String(64), nullable=False, index=True)
location = Column(String(100), nullable=True)
ip_address = Column(String(45), nullable=True, index=True)
hardware_token = Column(String(64), nullable=True)
ip = Column(String(45), nullable=True)
type = Column(String(50), nullable=True)
hostname = Column(String(100), nullable=True)
os_version = Column(String(100), nullable=True)
software_version = Column(String(100), nullable=True)
macs = Column(String(255), nullable=True)
model = Column(String(100), nullable=True)
registration_time = Column(TIMESTAMP(
timezone=True), server_default=func.current_timestamp(), nullable=False)
last_alive = Column(TIMESTAMP(timezone=True), server_default=func.current_timestamp(

56
server/alembic/versions/207f5b190f93_update_clients_table_for_new_fields.py Normal file
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@@ -0,0 +1,56 @@
"""Update clients table for new fields
Revision ID: 207f5b190f93
Revises: 3d15c3cac7b6
Create Date: 2025-07-15 14:12:42.427274
"""
from typing import Sequence, Union
from alembic import op
import sqlalchemy as sa
from sqlalchemy.dialects import mysql
# revision identifiers, used by Alembic.
revision: str = '207f5b190f93'
down_revision: Union[str, None] = '3d15c3cac7b6'
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None
def upgrade() -> None:
"""Upgrade schema."""
# ### commands auto generated by Alembic - please adjust! ###
op.add_column('clients', sa.Column('hardware_token', sa.String(length=64), nullable=True))
op.add_column('clients', sa.Column('ip', sa.String(length=45), nullable=True))
op.add_column('clients', sa.Column('type', sa.String(length=50), nullable=True))
op.add_column('clients', sa.Column('hostname', sa.String(length=100), nullable=True))
op.add_column('clients', sa.Column('os_version', sa.String(length=100), nullable=True))
op.add_column('clients', sa.Column('software_version', sa.String(length=100), nullable=True))
op.add_column('clients', sa.Column('macs', sa.String(length=255), nullable=True))
op.add_column('clients', sa.Column('model', sa.String(length=100), nullable=True))
op.drop_index(op.f('ix_clients_hardware_hash'), table_name='clients')
op.drop_index(op.f('ix_clients_ip_address'), table_name='clients')
op.drop_column('clients', 'location')
op.drop_column('clients', 'hardware_hash')
op.drop_column('clients', 'ip_address')
# ### end Alembic commands ###
def downgrade() -> None:
"""Downgrade schema."""
# ### commands auto generated by Alembic - please adjust! ###
op.add_column('clients', sa.Column('ip_address', mysql.VARCHAR(length=45), nullable=True))
op.add_column('clients', sa.Column('hardware_hash', mysql.VARCHAR(length=64), nullable=False))
op.add_column('clients', sa.Column('location', mysql.VARCHAR(length=100), nullable=True))
op.create_index(op.f('ix_clients_ip_address'), 'clients', ['ip_address'], unique=False)
op.create_index(op.f('ix_clients_hardware_hash'), 'clients', ['hardware_hash'], unique=False)
op.drop_column('clients', 'model')
op.drop_column('clients', 'macs')
op.drop_column('clients', 'software_version')
op.drop_column('clients', 'os_version')
op.drop_column('clients', 'hostname')
op.drop_column('clients', 'type')
op.drop_column('clients', 'ip')
op.drop_column('clients', 'hardware_token')
# ### end Alembic commands ###

47
simclient/simclient.py
View File

@@ -1,4 +1,5 @@
# simclient/simclient.py
import time
import uuid
import json
@@ -9,23 +10,43 @@ import os
import re
import platform
import logging
DEBUG_MODE = True # Auf False setzen für Produktion
from dotenv import load_dotenv
# ENV laden
load_dotenv("/workspace/simclient/.env")
# Konfiguration aus ENV
ENV = os.getenv("ENV", "development")
HEARTBEAT_INTERVAL = int(
os.getenv("HEARTBEAT_INTERVAL", 5 if ENV == "development" else 60))
LOG_LEVEL = os.getenv("LOG_LEVEL", "DEBUG" if ENV == "development" else "INFO")
MQTT_BROKER = os.getenv("MQTT_BROKER", "mqtt")
MQTT_PORT = int(os.getenv("MQTT_PORT", 1883))
DEBUG_MODE = os.getenv("DEBUG_MODE", "1" if ENV ==
"development" else "0") in ("1", "true", "True")
# Logging-Konfiguration
LOG_DIR = os.path.dirname(os.path.abspath(__file__))
LOG_PATH = os.path.join(LOG_DIR, "simclient.log")
LOG_PATH = "/tmp/simclient.log"
log_handlers = [logging.FileHandler(LOG_PATH, encoding="utf-8")]
if DEBUG_MODE:
log_handlers.append(logging.StreamHandler())
logging.basicConfig(
level=logging.DEBUG if DEBUG_MODE else logging.INFO,
level=getattr(logging, LOG_LEVEL.upper(), logging.INFO),
format="%(asctime)s [%(levelname)s] %(message)s",
handlers=log_handlers
)
discovered = False
def on_message(client, userdata, msg):
global discovered
logging.info(f"Empfangen: {msg.topic} {msg.payload.decode()}")
# ACK-Quittung empfangen?
if msg.topic.endswith("/discovery_ack"):
discovered = True
logging.info("Discovery-ACK empfangen. Starte Heartbeat.")
def get_mac_addresses():
@@ -107,7 +128,7 @@ SOFTWARE_VERSION = "1.0.0" # Optional: Anpassen bei neuen Releases
def send_discovery(client, client_id, hardware_token, ip_addr):
macs = get_mac_addresses()
discovery_msg = {
"client_id": client_id,
"uuid": client_id,
"hardware_token": hardware_token,
"ip": ip_addr,
"type": "infoscreen",
@@ -122,20 +143,30 @@ def send_discovery(client, client_id, hardware_token, ip_addr):
def main():
global discovered
client_id = str(uuid.uuid4())
hardware_token = get_hardware_token()
ip_addr = get_ip()
client = mqtt.Client(protocol=mqtt.MQTTv311, callback_api_version=2)
client.on_message = on_message
client.connect("mqtt", 1883)
client.connect(MQTT_BROKER, MQTT_PORT)
# Discovery-ACK-Topic abonnieren
ack_topic = f"infoscreen/{client_id}/discovery_ack"
client.subscribe(ack_topic)
client.subscribe(f"infoscreen/{client_id}/config")
# Discovery-Phase: Sende Discovery bis ACK empfangen
while not discovered:
send_discovery(client, client_id, hardware_token, ip_addr)
client.loop(timeout=1.0)
time.sleep(HEARTBEAT_INTERVAL)
# Heartbeat-Phase
while True:
# Heartbeat senden
client.publish(f"infoscreen/{client_id}/heartbeat", "alive")
logging.debug("Heartbeat gesendet.")
client.loop(timeout=1.0)
time.sleep(5)
time.sleep(HEARTBEAT_INTERVAL)
if __name__ == "__main__":