diff --git a/webcrawler/scrapy.cfg b/webcrawler/scrapy.cfg new file mode 100644 index 0000000..238809a --- /dev/null +++ b/webcrawler/scrapy.cfg @@ -0,0 +1,11 @@ +# Automatically created by: scrapy startproject +# +# For more information about the [deploy] section see: +# https://scrapyd.readthedocs.io/en/latest/deploy.html + +[settings] +default = webcrawler.settings + +[deploy] +#url = http://localhost:6800/ +project = webcrawler diff --git a/webcrawler/webcrawler/__init__.py b/webcrawler/webcrawler/__init__.py new file mode 100644 index 0000000..e69de29 diff --git a/webcrawler/webcrawler/items.py b/webcrawler/webcrawler/items.py new file mode 100644 index 0000000..8866a1e --- /dev/null +++ b/webcrawler/webcrawler/items.py @@ -0,0 +1,11 @@ +# Define here the models for your scraped items + +import scrapy + + +class WebcrawlerItem(scrapy.Item): + + author = scrapy.Field() + text = scrapy.Field() + tag = scrapy.Field() + \ No newline at end of file diff --git a/webcrawler/webcrawler/middlewares.py b/webcrawler/webcrawler/middlewares.py new file mode 100644 index 0000000..6335bfb --- /dev/null +++ b/webcrawler/webcrawler/middlewares.py @@ -0,0 +1,103 @@ +# Define here the models for your spider middleware +# +# See documentation in: +# https://docs.scrapy.org/en/latest/topics/spider-middleware.html + +from scrapy import signals + +# useful for handling different item types with a single interface +from itemadapter import is_item, ItemAdapter + + +class WebcrawlerSpiderMiddleware: + # Not all methods need to be defined. If a method is not defined, + # scrapy acts as if the spider middleware does not modify the + # passed objects. + + @classmethod + def from_crawler(cls, crawler): + # This method is used by Scrapy to create your spiders. + s = cls() + crawler.signals.connect(s.spider_opened, signal=signals.spider_opened) + return s + + def process_spider_input(self, response, spider): + # Called for each response that goes through the spider + # middleware and into the spider. + + # Should return None or raise an exception. + return None + + def process_spider_output(self, response, result, spider): + # Called with the results returned from the Spider, after + # it has processed the response. + + # Must return an iterable of Request, or item objects. + for i in result: + yield i + + def process_spider_exception(self, response, exception, spider): + # Called when a spider or process_spider_input() method + # (from other spider middleware) raises an exception. + + # Should return either None or an iterable of Request or item objects. + pass + + def process_start_requests(self, start_requests, spider): + # Called with the start requests of the spider, and works + # similarly to the process_spider_output() method, except + # that it doesn’t have a response associated. + + # Must return only requests (not items). + for r in start_requests: + yield r + + def spider_opened(self, spider): + spider.logger.info('Spider opened: %s' % spider.name) + + +class WebcrawlerDownloaderMiddleware: + # Not all methods need to be defined. If a method is not defined, + # scrapy acts as if the downloader middleware does not modify the + # passed objects. + + @classmethod + def from_crawler(cls, crawler): + # This method is used by Scrapy to create your spiders. + s = cls() + crawler.signals.connect(s.spider_opened, signal=signals.spider_opened) + return s + + def process_request(self, request, spider): + # Called for each request that goes through the downloader + # middleware. + + # Must either: + # - return None: continue processing this request + # - or return a Response object + # - or return a Request object + # - or raise IgnoreRequest: process_exception() methods of + # installed downloader middleware will be called + return None + + def process_response(self, request, response, spider): + # Called with the response returned from the downloader. + + # Must either; + # - return a Response object + # - return a Request object + # - or raise IgnoreRequest + return response + + def process_exception(self, request, exception, spider): + # Called when a download handler or a process_request() + # (from other downloader middleware) raises an exception. + + # Must either: + # - return None: continue processing this exception + # - return a Response object: stops process_exception() chain + # - return a Request object: stops process_exception() chain + pass + + def spider_opened(self, spider): + spider.logger.info('Spider opened: %s' % spider.name) diff --git a/webcrawler/webcrawler/pipelines.py b/webcrawler/webcrawler/pipelines.py new file mode 100644 index 0000000..cfa5e0e --- /dev/null +++ b/webcrawler/webcrawler/pipelines.py @@ -0,0 +1,22 @@ +# Define your item pipelines here +import pymongo + +from itemadapter import ItemAdapter + + +class WebcrawlerPipeline: + + def __init__(self): + self.conn = pymongo.MongoClient( + 'localhost', 27017 + ) + + self.db = self.conn['quotestoscrape'] + self.collection = self.db['luana_scardua'] + + if 'quotestoscrape' in self.conn.list_database_names(): + self.collection.drop() + + def process_item(self, item, spider): + self.collection.insert_one(dict(item)) + return item diff --git a/webcrawler/webcrawler/queries/queries.js b/webcrawler/webcrawler/queries/queries.js new file mode 100644 index 0000000..67690aa --- /dev/null +++ b/webcrawler/webcrawler/queries/queries.js @@ -0,0 +1,12 @@ +// citações coletadas +dbo.luana_scardua.count() + +// tags distintas +db.luana_scardua.distinct("tags") + +// citações por autor +db.luana_scardua.aggregate( + [{ + $group: {_id: "$author.name", qtd: {$sum: 1}} + }]) + \ No newline at end of file diff --git a/webcrawler/webcrawler/settings.py b/webcrawler/webcrawler/settings.py new file mode 100644 index 0000000..11fbc45 --- /dev/null +++ b/webcrawler/webcrawler/settings.py @@ -0,0 +1,87 @@ +# Scrapy settings for webcrawler project +# +# For simplicity, this file contains only settings considered important or +# commonly used. You can find more settings consulting the documentation: +# +# https://docs.scrapy.org/en/latest/topics/settings.html +# https://docs.scrapy.org/en/latest/topics/downloader-middleware.html +# https://docs.scrapy.org/en/latest/topics/spider-middleware.html + +BOT_NAME = 'webcrawler' + +SPIDER_MODULES = ['webcrawler.spiders'] +NEWSPIDER_MODULE = 'webcrawler.spiders' + +# Crawl responsibly by identifying yourself (and your website) on the user-agent +#USER_AGENT = 'webcrawler (+http://www.yourdomain.com)' + +# Obey robots.txt rules +ROBOTSTXT_OBEY = True + +# Configure maximum concurrent requests performed by Scrapy (default: 16) +#CONCURRENT_REQUESTS = 32 + +# Configure a delay for requests for the same website (default: 0) +# See https://docs.scrapy.org/en/latest/topics/settings.html#download-delay +# See also autothrottle settings and docs +#DOWNLOAD_DELAY = 3 +# The download delay setting will honor only one of: +#CONCURRENT_REQUESTS_PER_DOMAIN = 16 +#CONCURRENT_REQUESTS_PER_IP = 16 + +# Disable cookies (enabled by default) +#COOKIES_ENABLED = False + +# Disable Telnet Console (enabled by default) +#TELNETCONSOLE_ENABLED = False + +# Override the default request headers: +#DEFAULT_REQUEST_HEADERS = { +# 'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8', +# 'Accept-Language': 'en', +#} + +# Enable or disable spider middlewares +# See https://docs.scrapy.org/en/latest/topics/spider-middleware.html +#SPIDER_MIDDLEWARES = { +# 'webcrawler.middlewares.WebcrawlerSpiderMiddleware': 543, +#} + +# Enable or disable downloader middlewares +# See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html +#DOWNLOADER_MIDDLEWARES = { +# 'webcrawler.middlewares.WebcrawlerDownloaderMiddleware': 543, +#} + +# Enable or disable extensions +# See https://docs.scrapy.org/en/latest/topics/extensions.html +#EXTENSIONS = { +# 'scrapy.extensions.telnet.TelnetConsole': None, +#} + +# Configure item pipelines +# See https://docs.scrapy.org/en/latest/topics/item-pipeline.html +ITEM_PIPELINES = { + 'webcrawler.pipelines.WebcrawlerPipeline': 300, +} + +# Enable and configure the AutoThrottle extension (disabled by default) +# See https://docs.scrapy.org/en/latest/topics/autothrottle.html +#AUTOTHROTTLE_ENABLED = True +# The initial download delay +#AUTOTHROTTLE_START_DELAY = 5 +# The maximum download delay to be set in case of high latencies +#AUTOTHROTTLE_MAX_DELAY = 60 +# The average number of requests Scrapy should be sending in parallel to +# each remote server +#AUTOTHROTTLE_TARGET_CONCURRENCY = 1.0 +# Enable showing throttling stats for every response received: +#AUTOTHROTTLE_DEBUG = False + +# Enable and configure HTTP caching (disabled by default) +# See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html#httpcache-middleware-settings +#HTTPCACHE_ENABLED = True +#HTTPCACHE_EXPIRATION_SECS = 0 +#HTTPCACHE_DIR = 'httpcache' +#HTTPCACHE_IGNORE_HTTP_CODES = [] +#HTTPCACHE_STORAGE = 'scrapy.extensions.httpcache.FilesystemCacheStorage' diff --git a/webcrawler/webcrawler/spiders/__init__.py b/webcrawler/webcrawler/spiders/__init__.py new file mode 100644 index 0000000..ebd689a --- /dev/null +++ b/webcrawler/webcrawler/spiders/__init__.py @@ -0,0 +1,4 @@ +# This package will contain the spiders of your Scrapy project +# +# Please refer to the documentation for information on how to create and manage +# your spiders. diff --git a/webcrawler/webcrawler/spiders/quotes_spider.py b/webcrawler/webcrawler/spiders/quotes_spider.py new file mode 100644 index 0000000..9c5e675 --- /dev/null +++ b/webcrawler/webcrawler/spiders/quotes_spider.py @@ -0,0 +1,28 @@ +import scrapy + +from ..items import WebcrawlerItem + + +class QuotesSpider(scrapy.Spider): + + name = "webcrawler" + start_urls = ['http://quotes.toscrape.com/'] + + def parse(self, response): + + for quote in response.css('div.quote'): + item = WebcrawlerItem() + + item['text'] = quote.css('span.text::text').get() + item['author'] ={ + 'name': quote.css('small.author::text').get(), + 'url': quote.xpath('//span/a/@href').get() + } + item['tag'] = quote.css('div.tags a.tag::text').getall() + + yield item + + next_page = response.css('li.next a::attr(href)').get() + if next_page is not None: + yield scrapy.Request(response.urljoin(next_page), callback=self.parse) + \ No newline at end of file