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backend.py
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backend.py
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# Copyright (C) 2020 The Software Heritage developers
# See the AUTHORS file at the top-level directory of this distribution
# License: GNU General Public License version 3, or any later version
# See top-level LICENSE file for more information
from
flask
import
Flask
,
request
from
.db
import
Db
from
.exceptions
import
LargePayloadExc
LIMIT
=
1000
def
create_app
(
db
:
Db
):
"""Backend for swh-scanner, implementing the /known endpoint of the
Software Heritage Web API"""
app
=
Flask
(
__name__
)
@app.route
(
"/api/1/known/"
,
methods
=
[
"POST"
])
def
known
():
swhids
=
request
.
get_json
()
if
len
(
swhids
)
>
LIMIT
:
raise
LargePayloadExc
(
f
"The maximum number of SWHIDs this endpoint can receive is {LIMIT}"
)
cur
=
db
.
conn
.
cursor
()
res
=
{
swhid
:
{
"known"
:
db
.
known
(
swhid
,
cur
)}
for
swhid
in
swhids
}
cur
.
close
()
return
res
return
app
def
run
(
host
:
str
,
port
:
int
,
db
:
Db
):
"""Serve the local database
"""
app
=
create_app
(
db
)
app
.
run
(
host
,
port
,
debug
=
True
)
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