def __init__( self, jobs, jobname=datetime.now().strftime( "%Y%m%d%H%M%S" ), warcs=None, viral=None, logs=None, start_date=None, dummy_run=False, hash_cache_file=None, client=None ):
"""Sets up fields."""
if client is None:
self.client = hdfs.InsecureClient(cfg.get('hdfs','url'), user=cfg.get('hdfs','user'))
else:
self.client = client
self.dummy = dummy_run
if self.dummy:
logger.info("This is a dummy-run - no real ARKs will be minted.")
self.overwrite = False
self.jobs = jobs
self.jobname = jobname
self.warcs = warcs
self.viral = viral
self.logs = logs
self.hash_cache = {}
self.parse_hash_cache(hash_cache_file)
self.startdate = start_date
self.BAGIT_CONTACT_NAME="Andrew N. Jackson"
self.BAGIT_CONTACT_EMAIL="*****@*****.**"
self.BAGIT_DESCRIPTION="LD Crawl: "
self.ARK_URL="http://pii.ad.bl.uk/pii/vdc?arks="
self.ARK_PREFIX="ark:/81055/vdc_100022535899.0x"
# And create:
logger.info("Processing job files...")
self.processJobs()
logger.info("Generating METS...")
self.createMets()
def get_all_identifiers(sip):
"""Parses the SIP in HDFS and retrieves FILE/ARK tuples."""
client = hdfs.InsecureClient(cfg.get('hdfs', 'url'), user=cfg.get('hdfs', 'user'))
tar = "%s/%s.tar.gz" % (SIP_ROOT, sip)
status = client.status(tar,strict=False)
if status:
# Catch empty packages:
if status['length'] == 0:
logger.warning("Empty (zero byte) SIP package: %s" % tar)
yield None
else:
with client.read(tar) as reader:
t = reader.read()
# Open the package:
tar = tarfile.open(mode="r:gz", fileobj=StringIO(t))
foundMets = False
for i in tar.getmembers():
logger.debug("Examining %s" % i.name)
if i.name.endswith(".xml"):
foundMets = True
xml = tar.extractfile(i).read()
try:
tree = etree.fromstring(xml)
files = {}
n_files = 0
for mfile in tree.xpath("//mets:file", namespaces=NS):
#logger.debug("Found mets:file = %s " % etree.tostring(mfile))
admid = mfile.attrib["ADMID"]
logger.info("Found mets:file admid = %s " % admid)
path = mfile.xpath("mets:FLocat", namespaces=NS)[0].attrib["%shref" % XLINK]
files[admid] = { "path": path, "mimetype": mfile.attrib["MIMETYPE"], "size": mfile.attrib["SIZE"],
"checksum_type": mfile.attrib["CHECKSUMTYPE"], "checksum": mfile.attrib["CHECKSUM"] }
n_files = n_files + 1
if len(files.keys()) != n_files:
logger.error("ERROR, more files than IDs")
n_amdsecs = 0
for amdsec in tree.xpath("//mets:amdSec", namespaces=NS):
#logger.debug("Found mets:amdSec = %s " % etree.tostring(amdsec))
admid = amdsec.attrib["ID"]
logger.info("Found mets:amdSec id = %s " % admid)
oiv = amdsec.xpath("mets:digiprovMD/mets:mdWrap/mets:xmlData/premis:object/premis:objectIdentifier/premis:objectIdentifierValue", namespaces=NS)
if oiv and len(oiv) == 1:
files[admid]['ark'] = oiv[0].text
n_amdsecs = n_amdsecs + 1
logger.debug("Yielding %s" % files[admid] )
yield files[admid]
else:
logger.info("Skipping amdSec ID=%s" % admid)
if n_files != n_amdsecs:
logger.error("ERROR finding all amdSec elements")
except IndexError as i:
logger.error("Problem parsing METS for SIP: %s" % sip)
logger.exception(i)
if not foundMets:
logger.error("No METS XML file found!")
else:
logger.warning("Could not find SIP: hdfs://%s" % tar)
def uri_of_doc(self, **kwargs):
try:
logger.info("Got doc to send to W3ACT for: %s" % kwargs)
# Set up connection to W3ACT:
w = w3act(cfg.get('act','url'),cfg.get('act','username'),cfg.get('act','password'))
# And post this document up:
send_document_to_w3act(kwargs,cfg.get('wayback','endpoint'),w)
except BaseException as e:
logger.exception(e)
raise self.retry(countdown=10, exe=e)
def calculateHash( path ):
logger.info("Starting to generate hash for %s" % path)
client = hdfs.InsecureClient(cfg.get('hdfs', 'url'), user=cfg.get('hdfs', 'user'))
sha = hashlib.sha512()
with client.read(path) as file:
while True:
data = file.read( 10485760 )
if not data:
file.close()
break
sha.update( data )
logger.info("Finished generating hash for %s" % path)
return sha.hexdigest()
def uri_of_doc(self, **kwargs):
try:
logger.info("Got doc to send to W3ACT for: %s" % kwargs)
# Set up connection to W3ACT:
w = w3act(cfg.get('act', 'url'), cfg.get('act', 'username'),
cfg.get('act', 'password'))
# And post this document up:
send_document_to_w3act(kwargs, cfg.get('wayback', 'endpoint'), w)
except BaseException as e:
logger.exception(e)
raise self.retry(countdown=10, exe=e)
def find_identifiers(output_file):
with open(output_file, 'w') as f:
client = hdfs.InsecureClient(cfg.get('hdfs', 'url'), user=cfg.get('hdfs', 'user'))
for (path, dirs, files) in client.walk(SIP_ROOT):
logger.info("Looking at path "+path)
for file in files:
logger.info("Looking at file " + file)
if file.endswith('.tar.gz'):
sip = "%s/%s" % (path, file)
sip = sip[len(SIP_ROOT) + 1:]
sip = sip[:-7]
logger.info("Scanning %s..." % sip)
for waid in get_all_identifiers(sip):
f.write("%s %s\n" % (sip, waid) )
def stop_start_job(self, frequency, start=datetime.utcnow(), restart=True):
"""
Restarts the job for a particular frequency.
"""
try:
logger.info("Stopping/starting %s at %s" % (frequency, start))
# Set up connection to W3ACT:
w = w3act(cfg.get('act','url'),cfg.get('act','username'),cfg.get('act','password'))
# Set up connection to H3:
h = hapyx.HapyX("https://%s:%s" % (cfg.get('h3','host'), cfg.get('h3','port')), username=cfg.get('h3','username'), password=cfg.get('h3','password'))
# Stop job if currently running:
if frequency in h.list_jobs() and h.status(frequency) != "":
"""Stops a running job, notifies RabbitMQ and cleans up the directory."""
launch_id = h.get_launch_id(frequency)
job = W3actJob.from_directory(w, "%s/%s" % (HERITRIX_JOBS, frequency), heritrix=h)
job.stop()
remove_action_files(frequency)
crawl.status.update_job_status.delay(job.name, "%s/%s" % (job.name, launch_id), "STOPPED")
# Pass on to the next step in the chain:
logger.info("Requesting assembly of output for: %s/%s" % (frequency, launch_id))
assemble_job_output.delay(frequency,launch_id)
else:
job = None
# Start job if requested:
if restart:
targets = w.get_ld_export(frequency)
# logger.info("Found %s Targets in export." % len(export))
# targets = [t for t in export if (t["startDate"] is None or t["startDate"] < start) and (t["endDateISO"] is None or t["crawlEndDateISO"] > start)]
logger.debug("Found %s Targets in date range." % len(targets))
job = W3actJob(w, targets, frequency, heritrix=h)
logger.info("Starting job %s..." % job.name)
job.start()
launch_id = h.get_launch_id(frequency)
crawl.status.update_job_status.delay(job.name, "%s/%s" % (job.name, launch_id), "LAUNCHED" )
logger.info("Launched job %s/%s with %s seeds." % (job.name, launch_id, len(job.seeds)))
return "Launched job %s/%s with %s seeds." % (job.name, launch_id, len(job.seeds))
else:
if job:
logger.info("Stopped job %s/%s without restarting..." % (job.name, launch_id))
return "Stopped job %s/%s without restarting..." % (job.name, launch_id)
else:
logger.warning("No running '%s' job to stop!" % frequency)
return "No running '%s' job to stop!" % frequency
except BaseException as e:
logger.exception(e)
raise self.retry(countdown=10, exe=e)
def calculateHash(path):
logger.info("Starting to generate hash for %s" % path)
client = hdfs.InsecureClient(cfg.get('hdfs', 'url'),
user=cfg.get('hdfs', 'user'))
sha = hashlib.sha512()
with client.read(path) as file:
while True:
data = file.read(10485760)
if not data:
file.close()
break
sha.update(data)
logger.info("Finished generating hash for %s" % path)
return sha.hexdigest()
def __init__(self,
date,
warcs,
viral,
logs,
identifiers,
hash_cache=None,
client=None):
if client is None:
self.client = hdfs.InsecureClient(cfg.get('hdfs', 'url'),
user=cfg.get('hdfs', 'user'))
else:
self.client = client
self.warcs = []
self.viral = []
self.date = date
self.wq = Queue()
self.vq = Queue()
self.hash_cache = hash_cache
for i in range(NUM_THREADS):
worker = Thread(target=create_warcs,
args=(self.wq, self.warcs, self))
worker.setDaemon(True)
worker.start()
for warc in warcs:
self.wq.put(warc)
self.wq.join()
for i in range(NUM_THREADS):
worker = Thread(target=create_warcs,
args=(self.vq, self.viral, self))
worker.setDaemon(True)
worker.start()
for warc in viral:
self.vq.put(warc)
self.vq.join()
self.logs = []
for log in logs:
self.logs.append(ZipContainer(path=log, parent=self))
self.identifiers = identifiers
self.createDomainMets()
self.createCrawlerMets()
def uri_to_index(self, **kwargs):
try:
logger.debug("Got URI to index: %s" % kwargs)
send_uri_to_tinycdxserver(cfg.get('tinycdxserver','endpoint'), kwargs)
except BaseException as e:
logger.exception(e)
raise self.retry(countdown=10, exe=e)
def uri_to_index(self, **kwargs):
try:
logger.debug("Got URI to index: %s" % kwargs)
send_uri_to_tinycdxserver(cfg.get('tinycdxserver', 'endpoint'), kwargs)
except BaseException as e:
logger.exception(e)
raise self.retry(countdown=10, exe=e)
def __init__(self, job_id, launch_id):
"""Takes the checkpoint info and sets up data needed to build the SIP."""
self.hdfs = hdfs.InsecureClient(cfg.get('hdfs','url'), user=cfg.get('hdfs','user'))
# Set up paths:
self.WARC_ROOT = "%s/output/warcs" % HERITRIX_HDFS_ROOT
self.VIRAL_ROOT = "%s/output/viral" % HERITRIX_HDFS_ROOT
self.IMAGE_ROOT = "%s/output/images" % HERITRIX_HDFS_ROOT
self.LOG_ROOT = "%s/output/logs" % HERITRIX_HDFS_ROOT
self.LOCAL_LOG_ROOT = "%s/output/logs" % HERITRIX_ROOT
self.LOCAL_JOBS_ROOT = "%s/jobs" % HERITRIX_ROOT
#
self.job_id = job_id
self.launch_id = launch_id
self.job_launch_id = "%s/%s" % (job_id, launch_id)
self.verify_job_launch_id()
self.crawl_log = self.get_crawl_log()
self.start_date = CrawlJobOutput.file_start_date([self.crawl_log])
# Find the WARCs referenced from the crawl log:
self.parse_crawl_log()
# TODO Get sha512 and ARK identifiers for WARCs now, and store in launch folder and thus the zip?
# Bundle logs and configuration data into a zip and upload it to HDFS
self.upload_logs_as_zip()
def __init__(self, job_id, launch_id):
"""Takes the checkpoint info and sets up data needed to build the SIP."""
self.hdfs = hdfs.InsecureClient(cfg.get('hdfs', 'url'),
user=cfg.get('hdfs', 'user'))
# Set up paths:
self.WARC_ROOT = "%s/output/warcs" % HERITRIX_HDFS_ROOT
self.VIRAL_ROOT = "%s/output/viral" % HERITRIX_HDFS_ROOT
self.IMAGE_ROOT = "%s/output/images" % HERITRIX_HDFS_ROOT
self.LOG_ROOT = "%s/output/logs" % HERITRIX_HDFS_ROOT
self.LOCAL_LOG_ROOT = "%s/output/logs" % HERITRIX_ROOT
self.LOCAL_JOBS_ROOT = "%s/jobs" % HERITRIX_ROOT
#
self.job_id = job_id
self.launch_id = launch_id
self.job_launch_id = "%s/%s" % (job_id, launch_id)
self.verify_job_launch_id()
self.crawl_log = self.get_crawl_log()
self.start_date = CrawlJobOutput.file_start_date([self.crawl_log])
# Find the WARCs referenced from the crawl log:
self.parse_crawl_log()
# TODO Get sha512 and ARK identifiers for WARCs now, and store in launch folder and thus the zip?
# Bundle logs and configuration data into a zip and upload it to HDFS
self.upload_logs_as_zip()
def __init__( self, date, warcs, viral, logs, identifiers, hash_cache=None, client=None ):
if client is None:
self.client= hdfs.InsecureClient(cfg.get('hdfs','url'), user=cfg.get('hdfs','user'))
else:
self.client = client
self.warcs = []
self.viral = []
self.date = date
self.wq = Queue()
self.vq = Queue()
self.hash_cache = hash_cache
for i in range(NUM_THREADS):
worker = Thread(target=create_warcs, args=(self.wq, self.warcs, self))
worker.setDaemon(True)
worker.start()
for warc in warcs:
self.wq.put(warc)
self.wq.join()
for i in range(NUM_THREADS):
worker = Thread(target=create_warcs, args=(self.vq, self.viral, self))
worker.setDaemon(True)
worker.start()
for warc in viral:
self.vq.put(warc)
self.vq.join()
self.logs = []
for log in logs:
self.logs.append( ZipContainer( path=log, parent=self ))
self.identifiers = identifiers
self.createDomainMets()
self.createCrawlerMets()
def stop_start_job(self, frequency, start=datetime.utcnow(), restart=True):
"""
Restarts the job for a particular frequency.
"""
try:
logger.info("Stopping/starting %s at %s" % (frequency, start))
# Set up connection to W3ACT:
w = w3act(cfg.get('act', 'url'), cfg.get('act', 'username'),
cfg.get('act', 'password'))
# Set up connection to H3:
h = hapyx.HapyX("https://%s:%s" %
(cfg.get('h3', 'host'), cfg.get('h3', 'port')),
username=cfg.get('h3', 'username'),
password=cfg.get('h3', 'password'))
# Stop job if currently running:
if frequency in h.list_jobs() and h.status(frequency) != "":
"""Stops a running job, notifies RabbitMQ and cleans up the directory."""
launch_id = h.get_launch_id(frequency)
job = W3actJob.from_directory(w,
"%s/%s" % (HERITRIX_JOBS, frequency),
heritrix=h)
job.stop()
remove_action_files(frequency)
crawl.status.update_job_status.delay(
job.name, "%s/%s" % (job.name, launch_id), "STOPPED")
# Pass on to the next step in the chain:
logger.info("Requesting assembly of output for: %s/%s" %
(frequency, launch_id))
assemble_job_output.delay(frequency, launch_id)
else:
job = None
# Start job if requested:
if restart:
targets = w.get_ld_export(frequency)
# logger.info("Found %s Targets in export." % len(export))
# targets = [t for t in export if (t["startDate"] is None or t["startDate"] < start) and (t["endDateISO"] is None or t["crawlEndDateISO"] > start)]
logger.debug("Found %s Targets in date range." % len(targets))
job = W3actJob(w, targets, frequency, heritrix=h)
logger.info("Starting job %s..." % job.name)
job.start()
launch_id = h.get_launch_id(frequency)
crawl.status.update_job_status.delay(
job.name, "%s/%s" % (job.name, launch_id), "LAUNCHED")
logger.info("Launched job %s/%s with %s seeds." %
(job.name, launch_id, len(job.seeds)))
return "Launched job %s/%s with %s seeds." % (job.name, launch_id,
len(job.seeds))
else:
if job:
logger.info("Stopped job %s/%s without restarting..." %
(job.name, launch_id))
return "Stopped job %s/%s without restarting..." % (job.name,
launch_id)
else:
logger.warning("No running '%s' job to stop!" % frequency)
return "No running '%s' job to stop!" % frequency
except BaseException as e:
logger.exception(e)
raise self.retry(countdown=10, exe=e)
def __init__(self, job_id, launch_id, sip_tgz):
self.hdfs = hdfs.InsecureClient(cfg.get('hdfs','url'), user=cfg.get('hdfs','user'))
self.submit_sip(launch_id,sip_tgz)
from __future__ import absolute_import
import os
import bagit
import tarfile
import hdfs
import shutil
# import the Celery app context
from crawl.celery import app
from crawl.celery import cfg
# Set up drop/watched folder configuration
DLS_DROP=cfg.get('dls','drop_folder')
DLS_WATCH=cfg.get('dls','watch_folder')
# import the Celery log getter and use it
from celery.utils.log import get_task_logger
logger = get_task_logger(__name__)
#
class SubmitSip():
def __init__(self, job_id, launch_id, sip_tgz):
self.hdfs = hdfs.InsecureClient(cfg.get('hdfs','url'), user=cfg.get('hdfs','user'))
self.submit_sip(launch_id,sip_tgz)
def submit_sip(self, job_id, sip_tgz):
"""
Download, unpack, check and submit the specified SIP tar.gz file (from HDFS)
def getLength( path ):
client = hdfs.InsecureClient(cfg.get('hdfs', 'url'), user=cfg.get('hdfs', 'user'))
status = client.status(path)
return status['length']
from __future__ import absolute_import
import os
import bagit
import tarfile
import hdfs
import shutil
# import the Celery app context
from crawl.celery import app
from crawl.celery import cfg
# Set up drop/watched folder configuration
DLS_DROP = cfg.get('dls', 'drop_folder')
DLS_WATCH = cfg.get('dls', 'watch_folder')
# import the Celery log getter and use it
from celery.utils.log import get_task_logger
logger = get_task_logger(__name__)
#
class SubmitSip():
def __init__(self, job_id, launch_id, sip_tgz):
self.hdfs = hdfs.InsecureClient(cfg.get('hdfs', 'url'),
user=cfg.get('hdfs', 'user'))
self.submit_sip(launch_id, sip_tgz)
def submit_sip(self, job_id, sip_tgz):
"""
Download, unpack, check and submit the specified SIP tar.gz file (from HDFS)
def getLength(path):
client = hdfs.InsecureClient(cfg.get('hdfs', 'url'),
user=cfg.get('hdfs', 'user'))
status = client.status(path)
return status['length']
def __init__(self, job_id, launch_id, sip_tgz):
self.hdfs = hdfs.InsecureClient(cfg.get('hdfs', 'url'),
user=cfg.get('hdfs', 'user'))
self.submit_sip(launch_id, sip_tgz)
