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diff --git a/swh/web/ui/service.py b/swh/web/ui/service.py
--- a/swh/web/ui/service.py
+++ b/swh/web/ui/service.py
@@ -74,8 +74,8 @@
Args: query string of the form <hash_algo:hash>
- Returns: Dict with key found to True or False, according to
- whether the checksum is present or not
+ Returns: Dict with key found containing the hash info if the
+ hash is present, None if not.
"""
algo, hash = query.parse_hash(q)
@@ -84,6 +84,20 @@
'algo': algo}
+def search_hash(q):
+ """Checks if the storage contains a given content checksum
+
+ Args: query string of the form <hash_algo:hash>
+
+ Returns: Dict with key found to True or False, according to
+ whether the checksum is present or not
+
+ """
+ algo, hash = query.parse_hash(q)
+ found = backend.content_find(algo, hash)
+ return {'found': found is not None}
+
+
def lookup_hash_origin(q):
"""Return information about the checksum contained in the query q.
diff --git a/swh/web/ui/tests/test_service.py b/swh/web/ui/tests/test_service.py
--- a/swh/web/ui/tests/test_service.py
+++ b/swh/web/ui/tests/test_service.py
@@ -107,6 +107,45 @@
@patch('swh.web.ui.service.backend')
@istest
+ def search_hash_does_not_exist(self, mock_backend):
+ # given
+ mock_backend.content_find = MagicMock(return_value=None)
+
+ # when
+ actual_lookup = service.search_hash(
+ 'sha1_git:123caf10e9535160d90e874b45aa426de762f19f')
+
+ # then
+ self.assertEquals({'found': False}, actual_lookup)
+
+ # check the function has been called with parameters
+ mock_backend.content_find.assert_called_with(
+ 'sha1_git',
+ hex_to_hash('123caf10e9535160d90e874b45aa426de762f19f'))
+
+ @patch('swh.web.ui.service.backend')
+ @istest
+ def search_hash_exist(self, mock_backend):
+ # given
+ stub_content = {
+ 'sha1': hex_to_hash('456caf10e9535160d90e874b45aa426de762f19f')
+ }
+ mock_backend.content_find = MagicMock(return_value=stub_content)
+
+ # when
+ actual_lookup = service.search_hash(
+ 'sha1:456caf10e9535160d90e874b45aa426de762f19f')
+
+ # then
+ self.assertEquals({'found': True}, actual_lookup)
+
+ mock_backend.content_find.assert_called_with(
+ 'sha1',
+ hex_to_hash('456caf10e9535160d90e874b45aa426de762f19f'),
+ )
+
+ @patch('swh.web.ui.service.backend')
+ @istest
def lookup_hash_origin(self, mock_backend):
# given
mock_backend.content_find_occurrence = MagicMock(return_value={

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