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service.py
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# Copyright (C) 2015 The Software Heritage developers
# See the AUTHORS file at the top-level directory of this distribution
# License: GNU Affero General Public License version 3, or any later version
# See top-level LICENSE file for more information
from swh.web.ui import main
from swh.web.ui import query
def lookup_hash(q):
"""Checks if the storage contains a given content checksum
Args: query string
Returns:
True or False, according to whether the checksum is present or not
"""
(algo, hash) = query.parse_hash(q)
return main.storage().content_exist({algo: hash})
def _origin_seen(hash, data):
"""Given an origin, compute a message string with the right information.
Args:
origin: a dictionary with keys:
- origin: a dictionary with type and url keys
- occurrence: a dictionary with a validity range
Returns:
message as a string
"""
if data is None:
return 'Content with hash %s is unknown as of now.' % hash
origin_type = data['origin_type']
origin_url = data['origin_url']
revision = data['revision']
branch = data['branch']
path = data['path']
return """The content with hash %s has been seen on origin with type '%s'
at url '%s'. The revision was identified at '%s' on branch '%s'.
The file's path referenced was '%s'.""" % (hash,
origin_type,
origin_url,
revision,
branch,
path)
def lookup_hash_origin(hash):
"""Given a hash, return the origin of such content if any is found.
Args:
hash: key/value dictionary
Returns:
The origin for such hash if it's found.
Raises:
OSError (no route to host), etc... Network issues in general
"""
data = main.storage().content_find_occurrence(hash)
return _origin_seen(hash, data)
def stat_counters():
"""Return the stat counters for Software Heritage
Returns:
A dict mapping textual labels to integer values.
"""
return main.storage().stat_counters()

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