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import json
import sys
import time
from typing import Any, Dict, Optional
import requests
from selectolax.parser import HTMLParser
from sandcrawler.fileset_platforms import (
ArchiveOrgHelper,
DataverseHelper,
FigshareHelper,
ZenodoHelper,
)
from sandcrawler.fileset_strategies import (
ArchiveorgFilesetStrategy,
ArchiveorgFileStrategy,
WebFilesetStrategy,
WebFileStrategy,
)
from sandcrawler.fileset_types import (
IngestStrategy,
PlatformRestrictedError,
PlatformScopeError,
)
from sandcrawler.html_metadata import html_extract_biblio
from sandcrawler.ia import (
CdxApiError,
PetaboxError,
SavePageNowError,
WaybackContentError,
WaybackError,
cdx_to_dict,
fix_transfer_encoding,
)
from sandcrawler.ingest_file import IngestFileWorker
from sandcrawler.misc import clean_url, gen_file_metadata
from sandcrawler.workers import SandcrawlerWorker
MAX_BODY_SIZE_BYTES = 128 * 1024 * 1024
class IngestFilesetWorker(IngestFileWorker):
"""
General process is:
1. crawl base_url, and use request and landing page resource (eg, HTML) to
determine platform being targeted
2. use platform-specific helper to fetch metadata about the work, including
a manifest of files, and selection of an "ingest strategy" and any
required context
3. then use strategy-specific helper to archive files from manifest (first
checking to see if content has been archived already)
4. summarize status
"""
def __init__(self, sink: Optional[SandcrawlerWorker] = None, **kwargs):
super().__init__(sink=None, **kwargs)
self.try_spn2 = kwargs.get("try_spn2", True)
self.sink = sink
self.dataset_platform_helpers = {
"dataverse": DataverseHelper(),
"figshare": FigshareHelper(),
"zenodo": ZenodoHelper(),
"archiveorg": ArchiveOrgHelper(),
}
self.dataset_strategy_archivers = {
IngestStrategy.ArchiveorgFileset: ArchiveorgFilesetStrategy(),
IngestStrategy.ArchiveorgFile: ArchiveorgFileStrategy(),
IngestStrategy.WebFileset: WebFilesetStrategy(try_spn2=self.try_spn2),
IngestStrategy.WebFile: WebFileStrategy(try_spn2=self.try_spn2),
}
self.max_total_size = kwargs.get("max_total_size", 64 * 1024 * 1024 * 1024)
self.max_file_count = kwargs.get("max_file_count", 200)
self.ingest_file_result_sink = kwargs.get("ingest_file_result_sink")
self.ingest_file_result_stdout = kwargs.get("ingest_file_result_stdout", False)
def check_existing_ingest(self, ingest_type: str, base_url: str) -> Optional[dict]:
"""
Same as file version, but uses fileset result table
"""
if not self.try_existing_ingest:
return None
existing = self.pgrest_client.get_ingest_fileset_platform(ingest_type, base_url)
# TODO: filter on more flags?
if existing and existing["hit"] is True:
return existing
else:
return None
def process_existing(self, request: dict, result_row: dict) -> dict:
"""
If we have an existing ingest fileset result, do any database fetches
or additional processing necessary to return a result.
"""
raise NotImplementedError("process_existing() not tested or safe yet")
def want(self, request: dict) -> bool:
if not request.get("ingest_type") in ("dataset",):
return False
return True
def fetch_resource_iteratively(
self, ingest_type: str, base_url: str, force_recrawl: bool
) -> dict:
"""
This is copypasta from process_file(), should probably refactor.
"""
result: Dict[str, Any] = dict(hit=False)
result["hops"] = [base_url]
next_url = base_url
# check against blocklist
for block in self.base_url_blocklist:
# NOTE: hack to not skip archive.org content
if "archive.org" in block:
continue
if block in next_url:
result["status"] = "skip-url-blocklist"
return result
try:
resource = self.find_resource(next_url, force_recrawl=force_recrawl)
except SavePageNowError as e:
result["status"] = "spn2-error"
result["error_message"] = str(e)[:1600]
return result
except PetaboxError as e:
result["status"] = "petabox-error"
result["error_message"] = str(e)[:1600]
return result
except CdxApiError as e:
result["status"] = "cdx-error"
result["error_message"] = str(e)[:1600]
# add a sleep in cdx-error path as a slow-down
time.sleep(2.0)
return result
except WaybackError as e:
result["status"] = "wayback-error"
result["error_message"] = str(e)[:1600]
return result
except WaybackContentError as e:
result["status"] = "wayback-content-error"
result["error_message"] = str(e)[:1600]
return result
except NotImplementedError as e:
result["status"] = "not-implemented"
result["error_message"] = str(e)[:1600]
return result
html_biblio = None
if resource:
if resource.terminal_url:
result["terminal"] = {
"terminal_url": resource.terminal_url,
"terminal_dt": resource.terminal_dt,
"terminal_status_code": resource.terminal_status_code,
}
if resource.terminal_url not in result["hops"]:
result["hops"].append(resource.terminal_url)
if not resource.hit:
result["status"] = resource.status
return result
if resource.terminal_url:
for pattern in self.base_url_blocklist:
if pattern in resource.terminal_url:
result["status"] = "skip-url-blocklist"
return result
if resource.terminal_url:
for pattern in self.cookie_blocklist:
if pattern in resource.terminal_url:
result["status"] = "blocked-cookie"
return result
if not resource.body:
result["status"] = "empty-blob"
return result
if len(resource.body) > MAX_BODY_SIZE_BYTES:
result["status"] = "body-too-large"
return result
file_meta = gen_file_metadata(resource.body)
try:
file_meta, resource = fix_transfer_encoding(file_meta, resource)
except Exception as e:
result["status"] = "bad-gzip-encoding"
result["error_message"] = str(e)
return result
if not resource.body or file_meta["size_bytes"] == 0:
result["status"] = "empty-blob"
return result
# here we split based on ingest type to try and extract a next hop
html_ish_resource = bool(
"html" in file_meta["mimetype"]
or "xhtml" in file_meta["mimetype"] # matches "application/xhtml+xml"
or "application/xml" in file_meta["mimetype"]
or "text/xml" in file_meta["mimetype"]
)
html_biblio = None
html_doc = None
if html_ish_resource and resource.body:
try:
html_doc = HTMLParser(resource.body)
html_biblio = html_extract_biblio(resource.terminal_url, html_doc)
if html_biblio:
if "html_biblio" not in result and html_biblio.title:
result["html_biblio"] = json.loads(
html_biblio.json(exclude_none=True)
)
# print(f" setting html_biblio: {result['html_biblio']}", file=sys.stderr)
except ValueError:
pass
# fetch must be a hit if we got this far (though not necessarily an ingest hit!)
assert resource
assert resource.hit is True
assert resource.terminal_status_code in (200, 226)
if resource.terminal_url:
result["terminal"] = {
"terminal_url": resource.terminal_url,
"terminal_dt": resource.terminal_dt,
"terminal_status_code": resource.terminal_status_code,
"terminal_sha1hex": file_meta["sha1hex"],
}
result["file_meta"] = file_meta
result["cdx"] = cdx_to_dict(resource.cdx)
if resource.revisit_cdx:
result["revisit_cdx"] = cdx_to_dict(resource.revisit_cdx)
if ingest_type == "pdf":
if file_meta["mimetype"] != "application/pdf":
result["status"] = "wrong-mimetype" # formerly: "other-mimetype"
return result
elif ingest_type == "xml":
if file_meta["mimetype"] not in (
"application/xml",
"text/xml",
"application/jats+xml",
):
result["status"] = "wrong-mimetype"
return result
elif ingest_type == "html":
if file_meta["mimetype"] not in ("text/html", "application/xhtml+xml"):
result["status"] = "wrong-mimetype"
return result
else:
# eg, datasets, components, etc
pass
result["_html_biblio"] = html_biblio
result["_resource"] = resource
return result
def process(self, request: dict, key: Any = None) -> dict:
ingest_type = request.get("ingest_type")
if ingest_type not in ("dataset",):
raise NotImplementedError(f"can't handle ingest_type={ingest_type}")
# parse/clean URL
# note that we pass through the original/raw URL, and that is what gets
# persisted in database table
base_url = clean_url(request["base_url"])
force_recrawl = bool(request.get("force_recrawl", False))
print("[INGEST {:>6}] {}".format(ingest_type, base_url), file=sys.stderr)
# TODO: "existing" check against file and/or fileset ingest result table
# existing = self.check_existing_ingest(ingest_type, base_url)
# if existing:
# return self.process_existing(request, existing)
result = self.fetch_resource_iteratively(
ingest_type, base_url, force_recrawl=force_recrawl
)
result["request"] = request
if result.get("status") is not None:
result["request"] = request
return result
html_biblio = result.pop("_html_biblio")
resource = result.pop("_resource")
# 1. Determine `platform`, which may involve resolving redirects and crawling a landing page.
# TODO: could involve html_guess_platform() here?
# determine platform
platform_helper = None
for (helper_name, helper) in self.dataset_platform_helpers.items():
if helper.match_request(request, resource, html_biblio):
platform_helper = helper
break
if not platform_helper:
result["status"] = "no-platform-match"
return result
# 2. Use platform-specific methods to fetch manifest metadata and decide on an `ingest_strategy`.
try:
dataset_meta = platform_helper.process_request(request, resource, html_biblio)
except PlatformScopeError as e:
result["status"] = "platform-scope"
result["error_message"] = str(e)[:1600]
return result
except PlatformRestrictedError as e:
result["status"] = "platform-restricted"
result["error_message"] = str(e)[:1600]
return result
except NotImplementedError as e:
result["status"] = "not-implemented"
result["error_message"] = str(e)[:1600]
return result
except requests.exceptions.HTTPError as e:
result["error_message"] = str(e)[:1600]
if e.response.status_code == 404:
result["status"] = "platform-404"
result["error_message"] = str(e)[:1600]
return result
else:
result["status"] = "platform-http-error"
return result
except requests.exceptions.RequestException as e:
result["error_message"] = str(e)[:1600]
result["status"] = "platform-error"
return result
# print(dataset_meta, file=sys.stderr)
platform = dataset_meta.platform_name
result["platform_name"] = dataset_meta.platform_name
result["platform_domain"] = dataset_meta.platform_domain
result["platform_id"] = dataset_meta.platform_id
result["platform_base_url"] = dataset_meta.web_base_url
result["archiveorg_item_name"] = dataset_meta.archiveorg_item_name
if not dataset_meta.manifest:
result["status"] = "empty-manifest"
return result
# these will get confirmed/updated after ingest
result["manifest"] = [m.dict(exclude_none=True) for m in dataset_meta.manifest]
result["file_count"] = len(dataset_meta.manifest)
result["total_size"] = sum([m.size for m in dataset_meta.manifest if m.size])
if result["total_size"] > self.max_total_size:
result["status"] = "too-large-size"
return result
if result["file_count"] > self.max_file_count:
# hard max, to prevent downstream breakage
if result["file_count"] > 10 * 1000:
result["manifest"] = result["manifest"][: self.max_file_count]
result["status"] = "too-many-files"
return result
ingest_strategy = platform_helper.chose_strategy(dataset_meta)
result["ingest_strategy"] = ingest_strategy
print(
f"[PLATFORM {platform}] id={dataset_meta.platform_id} file_count={result['file_count']} total_size={result['total_size']} strategy={ingest_strategy}",
file=sys.stderr,
)
strategy_helper = self.dataset_strategy_archivers.get(ingest_strategy)
if not strategy_helper:
result["status"] = "no-strategy-helper"
return result
# 3. Use strategy-specific methods to archive all files in platform manifest, and verify manifest metadata.
try:
archive_result = strategy_helper.process(dataset_meta)
except SavePageNowError as e:
result["status"] = "spn2-error"
result["error_message"] = str(e)[:1600]
return result
except PetaboxError as e:
result["status"] = "petabox-error"
result["error_message"] = str(e)[:1600]
return result
except CdxApiError as e:
result["status"] = "cdx-error"
result["error_message"] = str(e)[:1600]
# add a sleep in cdx-error path as a slow-down
time.sleep(2.0)
return result
except WaybackError as e:
result["status"] = "wayback-error"
result["error_message"] = str(e)[:1600]
return result
except WaybackContentError as e:
result["status"] = "wayback-content-error"
result["error_message"] = str(e)[:1600]
return result
# 4. Summarize status and return structured result metadata.
result["status"] = archive_result.status
result["manifest"] = [m.dict(exclude_none=True) for m in archive_result.manifest]
if ingest_strategy.endswith("-fileset-bundle"):
result["fileset_bundle"] = dict()
if archive_result.bundle_file_meta:
result["fileset_bundle"]["file_meta"] = archive_result.bundle_file_meta
if archive_result.bundle_archiveorg_path:
result["fileset_bundle"][
"archiveorg_bundle_path"
] = archive_result.bundle_archiveorg_path
if archive_result.bundle_resource:
result["fileset_bundle"]["terminal"] = dict(
terminal_url=archive_result.bundle_resource.terminal_url,
terminal_dt=archive_result.bundle_resource.terminal_dt,
terminal_status_code=archive_result.bundle_resource.terminal_status_code,
)
if archive_result.bundle_resource.cdx:
result["fileset_bundle"]["cdx"] = cdx_to_dict(
archive_result.bundle_resource.cdx
)
if archive_result.bundle_resource.revisit_cdx:
result["fileset_bundle"]["revisit_cdx"] = cdx_to_dict(
archive_result.bundle_resource.revisit_cdx
)
if ingest_strategy.endswith("-file"):
result["fileset_file"] = dict()
if archive_result.file_file_meta:
result["fileset_file"]["file_meta"] = (archive_result.file_file_meta,)
if archive_result.file_resource:
result["fileset_file"]["terminal"] = dict(
terminal_url=archive_result.file_resource.terminal_url,
terminal_dt=archive_result.file_resource.terminal_dt,
terminal_status_code=archive_result.file_resource.terminal_status_code,
)
if archive_result.file_resource.cdx:
result["fileset_file"]["cdx"] = cdx_to_dict(
archive_result.file_resource.cdx
)
if archive_result.file_resource.revisit_cdx:
result["fileset_file"]["revisit_cdx"] = cdx_to_dict(
archive_result.file_resource.revisit_cdx
)
if result["status"].startswith("success"):
# check that these are still valid
assert result["file_count"] == len(archive_result.manifest)
assert result["total_size"] == sum(
[m.size for m in archive_result.manifest if m.size]
)
if (
result["status"] == "success-file"
and archive_result.file_resource
and archive_result.file_file_meta
):
file_result: Dict[str, Any] = dict(
hit=True,
status="success",
request=request.copy(),
file_meta=archive_result.file_file_meta,
terminal=dict(
terminal_url=archive_result.file_resource.terminal_url,
terminal_dt=archive_result.file_resource.terminal_dt,
terminal_status_code=archive_result.file_resource.terminal_status_code,
terminal_sha1hex=archive_result.file_file_meta["sha1hex"],
),
)
if archive_result.file_resource.cdx:
file_result["cdx"] = cdx_to_dict(archive_result.file_resource.cdx)
if archive_result.file_resource.revisit_cdx:
file_result["revisit_cdx"] = cdx_to_dict(
archive_result.file_resource.revisit_cdx
)
file_result["request"]["ingest_type"] = request["ingest_type"] + "-file"
# call the super() (ingest_file) version of process_hit()
info = self.process_file_hit(
file_result["request"]["ingest_type"],
archive_result.file_resource,
archive_result.file_file_meta,
)
file_result.update(info)
if self.ingest_file_result_sink:
self.ingest_file_result_sink.push_record(result.copy())
elif self.ingest_file_result_stdout:
sys.stdout.write(json.dumps(file_result, sort_keys=True) + "\n")
if result["status"].startswith("success"):
result["hit"] = True
print(
"[SUCCESS {:>5}] file_count={} total_size={} strategy={}".format(
ingest_type,
result["file_count"],
result["total_size"],
ingest_strategy,
),
file=sys.stderr,
)
else:
print(
"[FAIL {:>5}] status={} file_count={} total_size={} strategy={}".format(
ingest_type,
result["status"],
result["file_count"],
result["total_size"],
ingest_strategy,
),
file=sys.stderr,
)
return result
|