Deflect API

This project serves as the API interface to Deflect. Several components are integrated within this project including edgemanage, a database for storing DNS and website records, as well as the API and gen_site_config module.

System diagram

Overview

• Deflect-API is based on Django framework
• Uses MySQL as database to store:
  • Website list (URL, origin IP)
  • Website options and config
  • DNS records
  • Client certs
  • Edge (IP, hostname, dnet)
  • Dnet
• gen_site_config script (django command line script) generates site.yml according to database
• Provides an HTTP API to interact with database
• Provides an Web interface to interact with database (django admin)
• Works with one submodules (highlighted in the diagram above)
  • edgemanage3
• edgemanage3:
  • python integration
  • feature:
    • edge_query: query edge status
    • edge_conf: configure edge
    • edge_manage: cronjob to execute every min

Integration

Deflect-API has several integration mechanisms in place. This table is a breif overview of how everything works together:

verb	subject	1st reaction	2nd reaction
CD[1]	website[3]	gen_site_config
U[2]	website	gen_site_config
CU	edge	edgemanage update[4]
D	edge	edgemanage update	docker prune
C	dnet	edgemanage update
D	dnet	edgemanage update

In this table, subject could represent HTTP API endpoints, or operations via django admin. Once the action of the verb, for example, C (create), is committed, the 1st reaction will be triggered right-away. Depending on the category, the second reaction will be triggered after the first reaction is complete.

Most long running task are triggered by a celery worker, such as gen_site_config. This could be config in .env by setting GSC_TRIGGER_UPON_DB_CHANGE

Footnotes:

1. CD: Create(C) and Delete(D)
2. U: Update(U)
3. website: Websites, Website Options, DNS records and certificates
4. edgemanage update: files under edgelist_dir is updated according to latest database changes of dnet and edges

Provisioning and Deployment

Please refer to INSTALL.md

Usage

API Documentation

Please refer to HTTP API Documentation

Django command line

gen_site_config

Generate site.yml file according to Website, WebsiteOption and Record model

python manage.py gen_site_config --output <path> --blacklist <list.txt> --debug

Configuration should be set in .env before running this command:

GSC_LOG_FILE=/var/tmp/gen_site_config.log
GSC_OUTPUT_LOCATION=/var/www/brainsconfig
GSC_PARTITIONS={"part1": {"dnets": ["dnet1"]}, "part2": {"dnets": ["dnet2"]}}
GSC_DEFAULT_NETWORK=dnet1
GSC_IGNORE_APPROVAL=True

GSC_IGNORE_APPROVAL ignores approval in website_option during gen_site_config, this should be set to True in most cases.

For dev purposes, GSC_LOG_FILE and GSC_OUTPUT_LOCATION could make use of the dev/gen_sit_config directory.

Tests

Invoke django test. Test includes API, Model and gen_site_config test, this will read your local .env file. For CircleCI tests, please refer to config in .circleci, test coverage report is also generated with automate test.

python manage.py test

Django Admin

Built-in admin interface can be accessed via http://localhost:8000/admin

REST framework GUI

REST framework provides built-in GUI for API testing, auth is required by clicking "Log in" on the top right corner when accessed via http://localhost:8000/api