Discovery App

Discovery App is a crawler accountable to connect to cloud providers.

• To manager and authenticate on each cloud provider
• Translate cloud data to maestro data.

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Discovery app use Flask, on python >3.5.

Setup dev env

cd devtool/

docker-compose up -d

Highlights

• The discovery are divided in modules:

  • api: To authenticate on cloud providers.
  • translate: Normalize the data.
  • setup: Reset the tracker stats (it used on datacenters to get the orphans instances)
  • tracker: recreate the tracker stats
  • insert: insert/update data on mongodb
  • audit: prepare and transform a data to send to the external audit
  • external_audit: Send a http request to Audit app
  • ws: Send a http notification to websocket api

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Components Diagram

Follow an example of request flow.

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Flower - Debug Celery

Real-time monitoring using Celery Events

• Task progress and history
• Ability to show task details (arguments, start time, runtime, and more)
• Graphs and statistics

pip install flower

flower -A app.celery

npm run flower

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Installation with python 3

• Python >3.4
• RabbitMQ

Download the repository

git clone https://github.com/maestro-server/discovery-api.git

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Installing dependencies

pip install -r requeriments.txt

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Running

python -m flask run.py

or

FLASK_APP=run.py FLASK_DEBUG=1 flask run

or

npm run server

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Running workers

celery -A app.celery worker -E -Q discovery --hostname=discovery@%h --loglevel=info

or

npm run celery

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Warning

On production we use gunicorn to handle multiple threads.

# gunicorn_config.py

import os

bind = "0.0.0.0:" + str(os.environ.get("MAESTRO_PORT", 5000))
workers = os.environ.get("MAESTRO_GWORKERS", 2)