From 94ddfd7167994b4c0f7940317655d152aba302e6 Mon Sep 17 00:00:00 2001
From: Bryan Newbold <bnewbold@robocracy.org>
Date: Thu, 4 Nov 2021 17:08:36 -0700
Subject: short wayback ts: initial cleanup script implementation

---
 .../fatcat_tools/cleanups/file_short_wayback_ts.py | 251 +++++++++++++++++++++
 1 file changed, 251 insertions(+)
 create mode 100644 python/fatcat_tools/cleanups/file_short_wayback_ts.py

diff --git a/python/fatcat_tools/cleanups/file_short_wayback_ts.py b/python/fatcat_tools/cleanups/file_short_wayback_ts.py
new file mode 100644
index 00000000..2d893dbf
--- /dev/null
+++ b/python/fatcat_tools/cleanups/file_short_wayback_ts.py
@@ -0,0 +1,251 @@
+import argparse
+import copy
+import os
+import sys
+from typing import Any, Dict
+
+import fatcat_openapi_client
+from fatcat_openapi_client import ApiClient, FileEntity
+
+from fatcat_tools import authenticated_api, entity_from_dict, public_api
+from fatcat_tools.importers.common import EntityImporter, JsonLinePusher
+
+
+class FileShortWaybackTimestampCleanup(EntityImporter):
+    """
+    This is a one-off / one-time cleanup script for file entities, fix short
+    timestamps in wayback URLs. These timestamps are supposed to have 14 digits
+    (datetime with year, hour, seconds, etc). Some legacy file imports ended up
+    with only 4 or 12 digits.
+
+    While this calls itself a cleanup, it is based on the import code path. It
+    is not integrated into the `fatcat_import` or `fatcat_cleanup` controller;
+    instead it has a __main__ function and is invoked like:
+
+        python -m fatcat_tools.cleans.file_short_wayback-ts < blah.json
+    """
+
+    def __init__(self, api: ApiClient, **kwargs):
+
+        eg_desc = kwargs.pop("editgroup_description", None) or "Expand short wayback timestamps"
+        eg_extra = kwargs.pop("editgroup_extra", dict())
+        eg_extra["agent"] = eg_extra.get(
+            "agent", "fatcat_tools.FileShortWaybackTimestampCleanup"
+        )
+        super().__init__(
+            api,
+            do_updates=True,
+            editgroup_description=eg_desc,
+            editgroup_extra=eg_extra,
+            **kwargs
+        )
+        self.testing_mode = False
+
+    def want(self, row: Dict[str, Any]) -> bool:
+        if row["status"].startswith("success"):
+            return True
+        else:
+            self.counts["skip-status"] += 1
+            return False
+
+    def parse_record(self, row: Dict[str, Any]) -> FileEntity:
+
+        # bezerk mode doesn't make sense for this importer
+        assert self.bezerk_mode is False
+
+        fe: FileEntity = entity_from_dict(row["file_entity"], FileEntity)
+        status: str = row["status"]
+        assert status.startswith("success")
+        url_expansions: Dict[str, str] = row["full_urls"]
+        assert len(url_expansions) >= 1
+
+        # actual cleanup happens here
+        any_fixed = False
+        for fe_url in fe.urls:
+            if "://web.archive.org/web/" not in fe_url.url:
+                continue
+            seq = fe_url.url.split("/")
+            partial_ts = seq[4]
+            original_url = "/".join(seq[5:])
+            if seq[2] != "web.archive.org":
+                continue
+            if len(partial_ts) not in [4, 12]:
+                continue
+            if fe_url.url in url_expansions:
+                fix_url = url_expansions[fe_url.url]
+                # defensive checks
+                assert partial_ts in fix_url
+                assert "://" in fix_url
+                assert fe_url.url.endswith(original_url)
+                assert fix_url.endswith(original_url)
+                fe_url.url = fix_url
+                any_fixed = True
+
+        if not any_fixed:
+            self.counts["skip-no-fixes"] += 1
+            return None
+
+        # do any other generic file entity cleanups
+        # this includes removing duplicates
+        fe = self.generic_file_cleanups(fe)
+
+        # verify that there are no exact duplicates
+        final_urls = [u.url for u in fe.urls]
+        assert len(final_urls) == len(list(set(final_urls)))
+
+        return fe
+
+    def try_update(self, fe: FileEntity) -> bool:
+
+        # should always be existing
+        try:
+            existing = self.api.get_file(fe.ident)
+        except fatcat_openapi_client.rest.ApiException as err:
+            if err.status != 404:
+                raise err
+
+        if not existing:
+            self.counts["skip-existing-not-found"] += 1
+            return False
+
+        if existing.sha1 != fe.sha1:
+            self.counts["skip-existing-mismatch"] += 1
+            return False
+
+        assert fe.revision and existing.revision
+        if existing.revision != fe.revision:
+            self.counts["skip-revision-changed"] += 1
+            return False
+
+        # verify that at least one URL remains
+        if not fe.urls or len(fe.urls) < 1:
+            self.counts["skip-no-urls"] += 1
+            return False
+
+        # verify that all wayback urls have 14-digit timestamps, and are generally well-formed
+        for u in fe.urls:
+            if "://web.archive.org/web/" not in u.url:
+                continue
+            if u.rel != "webarchive":
+                self.counts["skip-bad-wayback-rel"] += 1
+                return False
+            seg = u.url.split("/")
+            if (
+                len(seg) < 6
+                or seg[0] != "https:"
+                or seg[2] != "web.archive.org"
+                or seg[3] != "web"
+            ):
+                self.counts["skip-bad-wayback"] += 1
+                return False
+            if len(seg[4]) != 14 or not seg[4].isdigit():
+                self.counts["skip-bad-wayback-timestamp"] += 1
+                return False
+
+        if existing == fe or existing.urls == fe.urls:
+            self.counts["skip-no-change"] += 1
+            return False
+
+        # not doing a check for "in current editgroup", because the source of
+        # these corrections (entity dump) contains no dupes
+
+        if not self.testing_mode:
+            self.api.update_file(self.get_editgroup_id(), existing.ident, existing)
+        self.counts["update"] += 1
+        return False
+
+
+def test_short_wayback_ts() -> None:
+    api = public_api("http://localhost:9411/v0")
+    fswtc = FileShortWaybackTimestampCleanup(api=api)
+    fswtc.testing_mode = True
+
+    assert fswtc.want({"status": "fail"}) is False
+    assert fswtc.want({"status": "success-self"}) is True
+
+    example_line: Dict[str, Any] = {
+        "status": "success-db",
+        "file_entity": {
+            # note: doesn't match actual entity
+            "release_ids": ["waldfsctnbcpdbmasgduhaaaaa"],
+            "mimetype": "application/pdf",
+            "urls": [
+                {
+                    "url": "https://papiro.unizar.es/ojs/index.php/ais/article/download/2187/1971",
+                    "rel": "web",
+                },
+                {
+                    "url": "https://web.archive.org/web/201904301022/https://papiro.unizar.es/ojs/index.php/ais/article/download/2187/1971",
+                    "rel": "webarchive",
+                },
+            ],
+            "sha256": "0b9e09480ed2e1f08f3c6c72f57ce12b52ea265f580f8810e606b49d64234b29",
+            "sha1": "be714299b9be21b5afdaa7affd7d710c58269433",
+            "md5": "9edb542be5b3446a1905e61a8a3abebd",
+            "size": 666242,
+            "revision": "fe949be8-7bf9-4c17-be28-8e3e90fb85bd",
+            "ident": "4ghpvs2t2rdtrdum2mkreh62me",
+            "state": "active",
+        },
+        "full_urls": {
+            "https://web.archive.org/web/201904301022/https://papiro.unizar.es/ojs/index.php/ais/article/download/2187/1971": "https://web.archive.org/web/20190430102239/https://papiro.unizar.es/ojs/index.php/ais/article/download/2187/1971"
+        },
+    }
+    example_fe = entity_from_dict(example_line["file_entity"], FileEntity)
+
+    fe1 = copy.copy(example_fe)
+    fe1.urls[
+        1
+    ].url = "https://web.archive.org/web/20190430102239/https://papiro.unizar.es/ojs/index.php/ais/article/download/2187/1971"
+    assert fswtc.parse_record(example_line) == fe1
+
+    # update code path; requires a known file ident and API running locally
+    assert fswtc.counts["update"] == 0
+    dummy_fe = api.get_file("aaaaaaaaaaaaamztaaaaaaaaai")
+    fe1.ident = dummy_fe.ident
+
+    assert fswtc.try_update(fe1) is False
+    assert fswtc.counts["skip-existing-mismatch"] == 1
+
+    fe1.sha1 = dummy_fe.sha1
+    assert fswtc.try_update(fe1) is False
+    assert fswtc.counts["skip-revision-changed"] == 1
+
+    fe1.revision = dummy_fe.revision
+    assert fswtc.try_update(fe1) is False
+    print(fswtc.counts)
+    assert fswtc.counts["update"] == 1
+
+
+def main() -> None:
+    parser = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter)
+    parser.add_argument(
+        "--host-url", default="http://localhost:9411/v0", help="connect to this host/port"
+    )
+    parser.add_argument("--batch-size", help="size of batch to send", default=50, type=int)
+    parser.set_defaults(
+        auth_var="FATCAT_API_AUTH_TOKEN",
+    )
+    parser.add_argument(
+        "json_file",
+        help="File with jsonlines from file_meta schema to import from",
+        default=sys.stdin,
+        type=argparse.FileType("r"),
+    )
+
+    args = parser.parse_args()
+    api = authenticated_api(
+        args.host_url,
+        # token is an optional kwarg (can be empty string, None, etc)
+        token=os.environ.get(args.auth_var),
+    )
+
+    fswtc = FileShortWaybackTimestampCleanup(
+        api,
+        edit_batch_size=args.batch_size,
+    )
+    JsonLinePusher(fswtc, args.json_file).run()
+
+
+if __name__ == "__main__":
+    main()
-- 
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