This is a pre-production deployment of Warehouse, however changes made here WILL affect the production instance of PyPI.
Latest Version Dependencies status unknown Test status unknown Test coverage unknown
Project Description
.. image:: docs/images/logo_readme.jpg
======================================

.. image:: https://travis-ci.org/rafaelcapucho/scrapy-eagle.svg?branch=master
:target: https://travis-ci.org/rafaelcapucho/scrapy-eagle

.. image:: https://img.shields.io/pypi/v/scrapy-eagle.svg
:target: https://pypi.python.org/pypi/scrapy-eagle
:alt: PyPI Version

.. image:: https://img.shields.io/pypi/pyversions/scrapy-eagle.svg
:target: https://pypi.python.org/pypi/scrapy-eagle

.. image:: https://landscape.io/github/rafaelcapucho/scrapy-eagle/master/landscape.svg?style=flat
:target: https://landscape.io/github/rafaelcapucho/scrapy-eagle/master
:alt: Code Quality Status

.. image:: https://requires.io/github/rafaelcapucho/scrapy-eagle/requirements.svg?branch=master
:target: https://requires.io/github/rafaelcapucho/scrapy-eagle/requirements/?branch=master
:alt: Requirements Status

Scrapy Eagle is a tool that allow us to run any Scrapy_ based project in a distributed fashion and monitor how it is going on and how many resources it is consuming on each server.

.. _Scrapy: http://scrapy.org

**This project is Under Development, don't use it yet**

.. image:: https://badge.waffle.io/rafaelcapucho/scrapy-eagle.svg?label=ready&title=Ready
:target: https://waffle.io/rafaelcapucho/scrapy-eagle
:alt: 'Stories in Ready'

Requeriments
------------

Scrapy Eagle uses Redis_ as Distributed Queue, so you will need a redis instance running.

.. _Redis: http://mail.python.org/pipermail/doc-sig/

Installation
------------

It could be easily made by running the code bellow,

.. code-block:: console

$ virtualenv eagle_venv; cd eagle_venv; source bin/activate
$ pip install scrapy-eagle

You should create one ``configparser`` configuration file (e.g. in /etc/scrapy-eagle.ini) containing:

.. code-block:: console

[redis]
host = 127.0.0.1
port = 6379
db = 0
;password = someverysecretpass

[server]
debug = True
cookie_secret_key = ha74h3hdh42a
host = 0.0.0.0
port = 5000

[scrapy]
binary = /project_venv/bin/scrapy
base_dir = /project_venv/project_scrapy/project

[commands]
binary = /project_venv/bin/python3
base_dir = /project_venv/project_scrapy/project/commands

Then you will be able to execute the `eagle_server` command like,

.. code-block:: console

eagle_server --config-file=/etc/scrapy-eagle.ini

Changes into your Scrapy project
--------------------------------

Enable the components in your `settings.py` of your Scrapy project:

.. code-block:: python

# Enables scheduling storing requests queue in redis.
SCHEDULER = "scrapy_eagle.worker.scheduler.DistributedScheduler"

# Ensure all spiders share same duplicates filter through redis.
DUPEFILTER_CLASS = "scrapy_eagle.worker.dupefilter.RFPDupeFilter"

# Schedule requests using a priority queue. (default)
SCHEDULER_QUEUE_CLASS = "scrapy_eagle.worker.queue.SpiderPriorityQueue"

# Schedule requests using a queue (FIFO).
SCHEDULER_QUEUE_CLASS = "scrapy_eagle.worker.queue.SpiderQueue"

# Schedule requests using a stack (LIFO).
SCHEDULER_QUEUE_CLASS = "scrapy_eagle.worker.queue.SpiderStack"

# Max idle time to prevent the spider from being closed when distributed crawling.
# This only works if queue class is SpiderQueue or SpiderStack,
# and may also block the same time when your spider start at the first time (because the queue is empty).
SCHEDULER_IDLE_BEFORE_CLOSE = 0

# Specify the host and port to use when connecting to Redis (optional).
REDIS_HOST = 'localhost'
REDIS_PORT = 6379

# Specify the full Redis URL for connecting (optional).
# If set, this takes precedence over the REDIS_HOST and REDIS_PORT settings.
REDIS_URL = "redis://user:pass@hostname:6379"

Once the configuration is finished, you should adapt each spider to use our Mixin:

.. code-block:: python

from scrapy.spiders import CrawlSpider, Rule
from scrapy_eagle.worker.spiders import DistributedMixin

class YourSpider(DistributedMixin, CrawlSpider):

name = "domain.com"

# start_urls = ['http://www.domain.com/']
redis_key = 'domain.com:start_urls'

rules = (
Rule(...),
Rule(...),
)

def _set_crawler(self, crawler):
CrawlSpider._set_crawler(self, crawler)
DistributedMixin.setup_redis(self)

Feeding a Spider from Redis
---------------------------

The class `scrapy_eagle.worker.spiders.DistributedMixin` enables a spider to read the
urls from redis. The urls in the redis queue will be processed one
after another.

Then, push urls to redis::

redis-cli lpush domain.com:start_urls http://domain.com/

Dashboard Development
---------------------

If you would like to change the client-side then you'll need to have NPM_ installed because we use ReactJS_ to build our interface. Installing all dependencies locally:

.. _ReactJS: https://facebook.github.io/react/
.. _NPM: https://www.npmjs.com/

.. code-block:: console

cd scrapy-eagle/dashboard
npm install

Then you can run ``npm start`` to compile and start monitoring any changes and recompiling automatically.

To generate the production version, run ``npm run build``.

To be easier to test the Dashboard you could use one simple http server instead of run the ``eagle_server``, like:

.. code-block:: console

sudo npm install -g http-server
cd scrapy-eagle/dashboard
http-server templates/

It would be available for you at http://127.0.0.1:8080

**Note**: Until now the Scrapy Eagle is mostly based on https://github.com/rolando/scrapy-redis
Release History

Release History

0.0.37

This version

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0.0.36

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0.0.35

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0.0.34

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0.0.33

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0.0.32

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0.0.31

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0.0.30

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0.0.29

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0.0.28

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0.0.27

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0.0.26

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0.0.25

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0.0.24

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0.0.23

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0.0.22

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0.0.21

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0.0.20

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0.0.19

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0.0.18

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0.0.17

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0.0.16

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0.0.15

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0.0.14

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0.0.13

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0.0.12

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0.0.11

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0.0.10

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0.0.9

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0.0.8

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0.0.7

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0.0.6

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0.0.5

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0.0.4

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0.0.3

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0.0.2

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0.0.1

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Download Files

Download Files

TODO: Brief introduction on what you do with files - including link to relevant help section.

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
scrapy_eagle-0.0.37-py3-none-any.whl (735.3 kB) Copy SHA256 Checksum SHA256 3.5 Wheel Oct 28, 2016
scrapy-eagle-0.0.37.tar.gz (541.6 kB) Copy SHA256 Checksum SHA256 Source Oct 28, 2016

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