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#!/usr/bin/python
import datetime
import asyncio
import socket
import sys
import json
import aiohttp.web
import aiohttp_route_decorator
import database
import crawler
import queries
route = aiohttp_route_decorator.RouteCollector()
db = database.Database()
# TODO use logging module instead of print
async def crawl_region(region):
"""Gets some matches from a region and inserts them
until the DB is up to date."""
api = crawler.Crawler()
while True:
try:
last_match_update = (await db.select(
"""
SELECT data->'attributes'->>'createdAt' AS created
FROM match
WHERE data->'attributes'->>'shardId'='""" + region + """'
ORDER BY data->'attributes'->>'createdAt' DESC LIMIT 1
""")
)[0]["created"]
except:
last_match_update = "2017-02-05T01:01:01Z"
print(region + " fetching matches after " + last_match_update)
# wait for http requests
matches = await api.matches_since(last_match_update,
region=region,
params={"page[limit]": 50})
if len(matches) > 0:
print(region + " got new data items: " + str(len(matches)))
else:
print(region + " got no new matches.")
return
# insert asynchronously in the background
await db.upsert(matches, True)
async def recrawl():
"""Gets the latest matches from all regions every 5 minutes."""
print("getting recent matches")
# TODO: insert API version (force update if changed)
# TODO: create database indices
# get or put when the last crawl was executed
# crawl and upsert
for region in ["na", "eu"]:
# fire workers
asyncio.ensure_future(crawl_region(region))
await asyncio.sleep(300)
asyncio.ensure_future(recrawl())
@route("/matches")
async def api_matches(request):
data = (await db.select(queries.queries["recent-matches"]))[0]["data"]
return aiohttp.web.Response(text=str(data))
@route("/winrates")
async def api_winrates(request):
data = (await db.select(queries.queries["hero-winrates"]))[0]["data"]
return aiohttp.web.Response(text=str(data))
@route("/status")
async def api_status(_):
resp = json.dumps({"version": "0.1.0"})
return aiohttp.web.Response(text=resp)
loop = asyncio.get_event_loop()
loop.run_until_complete(db.connect("postgres://vgstats@localhost/vgstats"))
loop.run_until_complete(queries.load_queries("queries/"))
loop.create_task(recrawl())
app = aiohttp.web.Application(loop=loop)
route.add_to_router(app.router)
aiohttp.web.run_app(app)
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