Elasticsearch viewable by Flask
lukaszkuczynski Jul 16, 2017
API for ES - why
So what is the goal? I want to have small app, that will allow greedy HR workers to explore Projects I took part in. I believe, one's experience is the most important feature of future (IT) worker; school was long time ago, courses are OK but who knows who helped to accomplish them?
Python for APIs
Working with some small projects using Django, I believe it's nice framework for web apps. But do we need always some full-featured machine like that? No. Sometimes microservice is ready to be written in few lines. How so?
from flask import Flask app = Flask(__name__) @app.route("/") def hello(): return "Hello World!"
Yeah, that is everything to write the service that is listening on port 5000 if you will run it with
FLASK_APP=hello.py flask run
That's all folks.
Elasticsearch managed by py
It was fun implementing searching in py official library for ES. It is easy as following:
from elasticsearch import Elasticsearch es = Elasticsearch() response = self.es.search(index=INDEX_PATTERN, doc_type=PROJECT_DOCTYPE, q=lucene_query)
Response is regular json so using pythonic dicts it accessing it's body will be possible.
Python + ES = fast API work
Even having TDD approach I was able to expose search functionality for my future webapp in 2 or 3 hours. Integration testing is also easy as this flask-testing and elastic-testing examples show. All results visible so far on my github project page.