input-service/src/app.py

#!/usr/bin/env python3
from flask import Flask
from flask_restful import Api
import sentry_sdk
from sentry_sdk.integrations.flask import FlaskIntegration
from healthcheck import HealthCheck

from redis_client import redis_client
from config import Config
from marshm import ma
from influxus import influx_db
from resources import SampleResource
from healthchecks import amqp_connection_status

import atexit

from apscheduler.schedulers.background import BackgroundScheduler
from magic_amqp import magic_amqp
from error_handlers import register_all_error_handlers

import jaeger_client
import opentracing
from flask_opentracing import FlaskTracing

"""
Main Flask RESTful API
"""

__author__ = "@tormakris"
__copyright__ = "Copyright 2020, Birbnetes Team"
__module_name__ = "app"
__version__text__ = "1"

if Config.SENTRY_DSN:
    sentry_sdk.init(
        dsn=Config.SENTRY_DSN,
        integrations=[FlaskIntegration()],
        traces_sample_rate=0.0,
        send_default_pii=True,
        release=Config.RELEASE_ID,
        environment=Config.RELEASEMODE,
        _experiments={"auto_enabling_integrations": True}
    )

app = Flask(__name__)
app.config.from_object(Config)

api = Api(app)
health = HealthCheck()
ma.init_app(app)

redis_client.init_app(app)

# ampq magic stuff
magic_amqp.init_app(app)

ampq_loop_scheduler = BackgroundScheduler()
ampq_loop_scheduler.add_job(func=lambda: magic_amqp.loop(), trigger="interval", seconds=5)
atexit.register(lambda: ampq_loop_scheduler.shutdown())

ampq_loop_scheduler.start()

if Config.ENABLE_INFLUXDB:
    influx_db.init_app(app)


@app.before_first_request
def init_db():
    if Config.ENABLE_INFLUXDB:
        influx_db.database.create(Config.INFLUXDB_DATABASE)


# Setup tracing
def initialize_tracer():
    app.logger.info("Initializing jaeger...")
    jaeger_cfg = jaeger_client.Config(config={}, service_name='input-service', validate=True)
    tracer = jaeger_cfg.initialize_tracer()
    return tracer


tracing = FlaskTracing(initialize_tracer, True, app)

api.add_resource(SampleResource, "/input")

health.add_check(amqp_connection_status)

register_all_error_handlers(app)

app.add_url_rule("/healthz", "healthcheck", view_func=lambda: health.run())

if __name__ != '__main__':
    import logging

    gunicorn_logger = logging.getLogger('gunicorn.error')
    app.logger.handlers = gunicorn_logger.handlers
    app.logger.setLevel(gunicorn_logger.level)