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import scrapy
import sys
from scrapy.crawler import CrawlerProcess
from scrapy import spiderloader
from scrapy.utils.project import get_project_settings
from database.models import Page, db
def crawl(the_spider=""):
try:
db.create_tables(Page.__subclasses__())
settings = get_project_settings()
process = CrawlerProcess(settings)
spiders = spiderloader.SpiderLoader.from_settings(settings)
if the_spider == "":
for spider in spiders.list():
if "crawl" in spider:
process.crawl(spider)
elif the_spider in spiders.list():
process.crawl(the_spider)
else:
print("`"+the_spider+"` is not a valid spider.")
print('Valid spider are: ')
for spider in spiders.list():
if "crawl" in spider:
print(" "+spider)
sys.exit(1)
process.start()
except Exception as e:
print(e)
def update():
try:
settings = get_project_settings()
process = CrawlerProcess(settings)
spiders = spiderloader.SpiderLoader.from_settings(settings)
for spider in spiders.list():
if "update" in spider:
process.crawl(spider)
process.start()
except Exception as e:
print(e)
def show_help():
print("Launch all crawler => "+str(sys.argv[0])+" crawl")
print("Update all page already crawlerd => "+str(sys.argv[0])+" update")
if __name__ == '__main__':
#main()
if len(sys.argv) == 2:
if sys.argv[1] == "crawl":
crawl()
elif sys.argv[1] == "update":
update()
else:
show_help()
elif len(sys.argv) == 3:
if sys.argv[1] == "crawl":
crawl(sys.argv[2])
else:
show_help()
else:
show_help()
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