def unzip_file(zip_src, dst_dir):
"""
Unzip file
:param zip_src: source zip file
:param dst_dir: destination directory
"""
r = zipfile.is_zipfile(zip_src)
if r:
fz = zipfile.ZipFile(zip_src, 'r')
for file in fz.namelist():
fz.extract(file, dst_dir)
else:
other.info('This is not zip')
def execute_spider(self, id: str, params: str = None):
"""
Execute spider task.
:param self:
:param id: task_id
"""
task_id = self.request.id
hostname = self.request.hostname
spider = db_manager.get('spiders', id=id)
command = spider.get('cmd')
# if start with python, then use sys.executable to execute in the virtualenv
if command.startswith('python '):
command = command.replace('python ', sys.executable + ' ')
# if start with scrapy, then use sys.executable to execute scrapy as module in the virtualenv
elif command.startswith('scrapy '):
command = command.replace('scrapy ', sys.executable + ' -m scrapy ')
# pass params to the command
if params is not None:
command += ' ' + params
# get task object and return if not found
task = get_task(task_id)
if task is None:
return
# current working directory
current_working_directory = os.path.join(PROJECT_DEPLOY_FILE_FOLDER,
str(spider.get('_id')))
# log info
logger.info('task_id: %s' % task_id)
logger.info('hostname: %s' % hostname)
logger.info('current_working_directory: %s' % current_working_directory)
logger.info('spider_id: %s' % id)
logger.info(command)
# make sure the log folder exists
log_path = os.path.join(PROJECT_LOGS_FOLDER, id)
if not os.path.exists(log_path):
os.makedirs(log_path)
# open log file streams
log_file_path = os.path.join(
log_path, '%s.log' % datetime.now().strftime('%Y%m%d%H%M%S'))
stdout = open(log_file_path, 'a')
stderr = open(log_file_path, 'a')
# update task status as started
db_manager.update_one('tasks',
id=task_id,
values={
'start_ts': datetime.utcnow(),
'node_id': hostname,
'hostname': hostname,
'log_file_path': log_file_path,
'status': TaskStatus.STARTED
})
# pass params as env variables
env = os.environ.copy()
# custom environment variables
if spider.get('envs'):
for _env in spider.get('envs'):
env[_env['name']] = _env['value']
# task id environment variable
env['CRAWLAB_TASK_ID'] = task_id
# collection environment variable
if spider.get('col'):
env['CRAWLAB_COLLECTION'] = spider.get('col')
# create index to speed results data retrieval
db_manager.create_index(spider.get('col'), [('task_id', ASCENDING)])
# start process
cmd_arr = command.split(' ')
cmd_arr = list(filter(lambda x: x != '', cmd_arr))
try:
p = subprocess.Popen(cmd_arr,
stdout=stdout.fileno(),
stderr=stderr.fileno(),
cwd=current_working_directory,
env=env,
bufsize=1)
# update pid
db_manager.update_one(col_name='tasks',
id=task_id,
values={'pid': p.pid})
# get output from the process
_stdout, _stderr = p.communicate()
# get return code
code = p.poll()
if code == 0:
status = TaskStatus.SUCCESS
else:
status = TaskStatus.FAILURE
except Exception as err:
logger.error(err)
stderr.write(str(err))
status = TaskStatus.FAILURE
# save task when the task is finished
finish_ts = datetime.utcnow()
db_manager.update_one('tasks',
id=task_id,
values={
'finish_ts':
finish_ts,
'duration':
(finish_ts - task['create_ts']).total_seconds(),
'status':
status
})
task = db_manager.get('tasks', id=id)
# close log file streams
stdout.flush()
stderr.flush()
stdout.close()
stderr.close()
return task
def execute_config_spider(self, id: str, params: str = None):
task_id = self.request.id
hostname = self.request.hostname
spider = db_manager.get('spiders', id=id)
# get task object and return if not found
task = get_task(task_id)
if task is None:
return
# current working directory
current_working_directory = os.path.join(BASE_DIR, 'spiders')
# log info
logger.info('task_id: %s' % task_id)
logger.info('hostname: %s' % hostname)
logger.info('current_working_directory: %s' % current_working_directory)
logger.info('spider_id: %s' % id)
# make sure the log folder exists
log_path = os.path.join(PROJECT_LOGS_FOLDER, id)
if not os.path.exists(log_path):
os.makedirs(log_path)
# open log file streams
log_file_path = os.path.join(
log_path, '%s.log' % datetime.now().strftime('%Y%m%d%H%M%S'))
stdout = open(log_file_path, 'a')
stderr = open(log_file_path, 'a')
# update task status as started
db_manager.update_one('tasks',
id=task_id,
values={
'start_ts': datetime.utcnow(),
'node_id': hostname,
'hostname': hostname,
'log_file_path': log_file_path,
'status': TaskStatus.STARTED
})
# pass params as env variables
env = os.environ.copy()
# custom environment variables
if spider.get('envs'):
for _env in spider.get('envs'):
env[_env['name']] = _env['value']
# task id environment variable
env['CRAWLAB_TASK_ID'] = task_id
# collection environment variable
if spider.get('col'):
env['CRAWLAB_COLLECTION'] = spider.get('col')
# create index to speed results data retrieval
db_manager.create_index(spider.get('col'), [('task_id', ASCENDING)])
# mongodb environment variables
env['MONGO_HOST'] = MONGO_HOST
env['MONGO_PORT'] = str(MONGO_PORT)
env['MONGO_DB'] = MONGO_DB
if MONGO_USERNAME is not None:
env['MONGO_USERNAME'] = MONGO_USERNAME
if MONGO_PASSWORD:
env['MONGO_PASSWORD'] = MONGO_PASSWORD
cmd_arr = [sys.executable, '-m', 'scrapy', 'crawl', 'config_spider']
try:
p = subprocess.Popen(cmd_arr,
stdout=stdout.fileno(),
stderr=stderr.fileno(),
cwd=current_working_directory,
env=env,
bufsize=1)
# update pid
db_manager.update_one(col_name='tasks',
id=task_id,
values={'pid': p.pid})
# get output from the process
_stdout, _stderr = p.communicate()
# get return code
code = p.poll()
if code == 0:
status = TaskStatus.SUCCESS
else:
status = TaskStatus.FAILURE
except Exception as err:
traceback.print_exc()
logger.error(err)
stderr.write(str(err))
status = TaskStatus.FAILURE
# save task when the task is finished
finish_ts = datetime.utcnow()
db_manager.update_one('tasks',
id=task_id,
values={
'finish_ts':
finish_ts,
'duration':
(finish_ts - task['create_ts']).total_seconds(),
'status':
status
})
task = db_manager.get('tasks', id=id)
# close log file streams
stdout.flush()
stderr.flush()
stdout.close()
stderr.close()
return task
def update_nodes_status_online(event):
other.info(f"{event}")
def run_flower():
p = subprocess.Popen(['celery', 'flower', '-b', BROKER_URL], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
for line in iter(p.stdout.readline, 'b'):
if line.decode('utf-8') != '':
other.info(line.decode('utf-8'))
import os
import sys
import subprocess
# make sure the working directory is in system path
FILE_DIR = os.path.dirname(os.path.realpath(__file__))
ROOT_PATH = os.path.abspath(os.path.join(FILE_DIR, '..'))
sys.path.append(ROOT_PATH)
from utils.log import other
from config import BROKER_URL
if __name__ == '__main__':
p = subprocess.Popen(
[sys.executable, '-m', 'celery', 'flower', '-b', BROKER_URL],
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
cwd=ROOT_PATH)
for line in iter(p.stdout.readline, 'b'):
if line.decode('utf-8') != '':
other.info(line.decode('utf-8'))