1 files changed, 91 insertions, 0 deletions
diff --git a/postgrest/backfill/backfill_grobid.py b/postgrest/backfill/backfill_grobid.py
new file mode 100755
index 0000000..08fad7f
--- /dev/null
+++ b/postgrest/backfill/backfill_grobid.py
@@ -0,0 +1,91 @@
+#!/usr/bin/env python3
+"""
+This is a "one-time" tranform helper script for GROBID backfill into
+sandcrawler minio and postgresql.
+"""
+
+import json, os, sys, collections, io
+import base64
+import requests
+from minio import Minio
+import psycopg2
+import psycopg2.extras
+
+
+def b32_hex(s):
+    s = s.strip().split()[0].lower()
+    if s.startswith("sha1:"):
+        s = s[5:]
+    if len(s) != 32:
+        return s
+    return base64.b16encode(base64.b32decode(s.upper())).lower().decode('utf-8')
+
+def insert(cur, batch):
+    sql = """
+        INSERT INTO
+        grobid (sha1hex, grobid_version, status_code, status, fatcat_release, metadata)
+        VALUES %s
+        ON CONFLICT DO NOTHING;
+    """
+    batch = [(d['sha1hex'], d['grobid_version'], d['status_code'], d['status'], d['fatcat_release'], d['metadata'])
+             for d in batch]
+    res = psycopg2.extras.execute_values(cur, sql, batch)
+
+def stdin_to_pg():
+    mc = Minio('localhost:9000',
+        access_key=os.environ['MINIO_ACCESS_KEY'],
+        secret_key=os.environ['MINIO_SECRET_KEY'],
+        secure=False)
+    # no host means it will use local domain socket by default
+    conn = psycopg2.connect(database="sandcrawler", user="postgres")
+    cur = conn.cursor()
+    counts = collections.Counter({'total': 0})
+    batch = []
+    for l in sys.stdin:
+        if counts['raw_lines'] > 0 and counts['raw_lines'] % 10000 == 0:
+            print("Progress: {}...".format(counts))
+        counts['raw_lines'] += 1
+        l = l.strip()
+        if not l:
+            continue
+        row = json.loads(l)
+        if not row:
+            continue
+        sha1hex = b32_hex(row['pdf_hash'])
+        grobid_xml = row['tei_xml'].encode('utf-8')
+        grobid_xml_len = len(grobid_xml)
+        grobid_xml = io.BytesIO(grobid_xml)
+
+        key = "{}/{}/{}.tei.xml".format(
+            sha1hex[0:2],
+            sha1hex[2:4],
+            sha1hex)
+        mc.put_object("grobid", key, grobid_xml, grobid_xml_len,
+            content_type="application/tei+xml",
+            metadata=None)
+        counts['minio-success'] += 1
+
+        info = dict(
+            sha1hex=sha1hex,
+            grobid_version=None, # TODO
+            status_code=200,
+            status=None,
+            fatcat_release=None,
+            metadata=None,
+        )
+        batch.append(info)
+        counts['total'] += 1
+        if len(batch) >= 1000:
+            insert(cur, batch)
+            conn.commit()
+            batch = []
+            counts['batches'] += 1
+    if batch:
+        insert(cur, batch)
+        batch = []
+    conn.commit()
+    cur.close()
+    print("Done: {}".format(counts))
+
+if __name__=='__main__':
+    stdin_to_pg()