add batching support to get_supports and tests

lbrynet/database/storage.py

@@ -552,7 +552,7 @@ class SQLiteStorage(object):
                 )
         return self.db.runInteraction(_save_support)
 
-    def get_supports(self, claim_id):
+    def get_supports(self, *claim_ids):
         def _format_support(outpoint, supported_id, amount, address):
             return {
                 "txid": outpoint.split(":")[0],
@@ -563,10 +563,15 @@ class SQLiteStorage(object):
             }
 
         def _get_supports(transaction):
+            if len(claim_ids) == 1:
+                bind = "=?"
+            else:
+                bind = "in ({})".format(','.join('?' for _ in range(len(claim_ids))))
             return [
                 _format_support(*support_info)
                 for support_info in transaction.execute(
-                    "select * from support where claim_id=?", (claim_id, )
+                    "select * from support where claim_id {}".format(bind),
+                    tuple(claim_ids)
                 ).fetchall()
             ]
 

lbrynet/tests/unit/database/test_SQLiteStorage.py

@@ -163,6 +163,25 @@ class BlobStorageTests(StorageTest):
         self.assertEqual(blob_hashes, [])
 
 
+class SupportsStorageTests(StorageTest):
+    @defer.inlineCallbacks
+    def test_supports_storage(self):
+        claim_ids = [random_lbry_hash() for _ in range(10)]
+        random_supports = [{"txid": random_lbry_hash(), "nout":i, "address": "addr{}".format(i), "amount": i}
+                    for i in range(20)]
+        expected_supports = {}
+        for idx, claim_id in enumerate(claim_ids):
+            yield self.storage.save_supports(claim_id, random_supports[idx*2:idx*2+2])
+            for random_support in random_supports[idx*2:idx*2+2]:
+                random_support['claim_id'] = claim_id
+                expected_supports.setdefault(claim_id, []).append(random_support)
+        supports = yield self.storage.get_supports(claim_ids[0])
+        self.assertEqual(supports, expected_supports[claim_ids[0]])
+        all_supports = yield self.storage.get_supports(*claim_ids)
+        for support in all_supports:
+            self.assertIn(support, expected_supports[support['claim_id']])
+
+
 class StreamStorageTests(StorageTest):
     @defer.inlineCallbacks
     def test_store_stream(self, stream_hash=None):