fix restriction rules, minor refactor, translate error from transaction not found into returning none

torba/tests/client_tests/integration/test_transactions.py

@@ -138,6 +138,7 @@ class BasicTransactionTests(IntegrationTestCase):
         address = await self.account.receiving.get_or_create_usable_address()
         # evil trick: mempool is unsorted on real life, but same order between python instances. reproduce it
         original_summary = self.conductor.spv_node.server.mempool.transaction_summaries
+
         async def random_summary(*args, **kwargs):
             summary = await original_summary(*args, **kwargs)
             if summary and len(summary) > 2:
@@ -174,3 +175,5 @@ class BasicTransactionTests(IntegrationTestCase):
         self.assertTrue(await self.ledger.update_history(address, remote_status))
         self.assertEqual(21, len((await self.ledger.get_local_status_and_history(address))[1]))
         self.assertEqual(0, len(self.ledger._known_addresses_out_of_sync))
+        # should be another test, but it would be too much to setup just for that and it affects sync
+        self.assertIsNone(await self.ledger.network.get_transaction('1'*64))

torba/tests/client_tests/unit/test_ledger.py

@@ -29,7 +29,7 @@ class MockNetwork:
     async def get_merkle(self, txid, height):
         return {'merkle': ['abcd01'], 'pos': 1}
 
-    async def get_transaction(self, tx_hash):
+    async def get_transaction(self, tx_hash, _=None):
         self.get_transaction_called.append(tx_hash)
         return self.transaction[tx_hash]
 

torba/torba/client/basedatabase.py

@@ -220,7 +220,7 @@ class SQLiteMixin:
 
     async def open(self):
         log.info("connecting to database: %s", self._db_path)
-        self.db = await AIOSQLite.connect(self._db_path)
+        self.db = await AIOSQLite.connect(self._db_path, isolation_level=None)
         await self.db.executescript(self.CREATE_TABLES_QUERY)
 
     async def close(self):

torba/torba/client/baseledger.py

@@ -287,7 +287,7 @@ class BaseLedger(metaclass=LedgerRegistry):
         await self.join_network()
         self.network.on_connected.listen(self.join_network)
 
-    async def join_network(self, *args):
+    async def join_network(self, *_):
         log.info("Subscribing and updating accounts.")
         async with self._header_processing_lock:
             await self.update_headers()
@@ -472,9 +472,10 @@ class BaseLedger(metaclass=LedgerRegistry):
             await self.db.save_transaction_io_batch(
                 synced_txs, address, self.address_to_hash160(address), synced_history.getvalue()
             )
-
-            for tx in synced_txs:
-                await self._on_transaction_controller.add(TransactionEvent(address, tx))
+            await asyncio.wait([
+                self._on_transaction_controller.add(TransactionEvent(address, tx))
+                for tx in synced_txs
+            ])
 
             if address_manager is None:
                 address_manager = await self.get_address_manager_for_address(address)
@@ -517,7 +518,7 @@ class BaseLedger(metaclass=LedgerRegistry):
 
             if tx is None:
                 # fetch from network
-                _raw = await self.network.retriable_call(self.network.get_transaction, txid)
+                _raw = await self.network.retriable_call(self.network.get_transaction, txid, remote_height)
                 if _raw:
                     tx = self.transaction_class(unhexlify(_raw))
                     cache_item.tx = tx  # make sure it's saved before caching it

torba/torba/client/basenetwork.py

@@ -72,6 +72,10 @@ class ClientSession(BaseClientSession):
             log.debug("got reply for %s from %s:%i", method, *self.server)
             return reply
         except RPCError as e:
+            if str(e).find('.*no such .*transaction.*') and args:
+                # shouldnt the server return none instead?
+                log.warning("Requested transaction missing from server: %s", args[0])
+                return None
             log.warning("Wallet server (%s:%i) returned an error. Code: %s Message: %s",
                         *self.server, *e.args)
             raise e
@@ -220,20 +224,17 @@ class BaseNetwork:
     def _update_remote_height(self, header_args):
         self.remote_height = header_args[0]["height"]
 
-    def get_transaction(self, tx_hash):
-        return self.rpc('blockchain.transaction.get', [tx_hash])
+    def get_transaction(self, tx_hash, known_height=None):
+        # use any server if its old, otherwise restrict to who gave us the history
+        restricted = not known_height or 0 > known_height > self.remote_height - 10
+        return self.rpc('blockchain.transaction.get', [tx_hash], restricted)
 
     def get_transaction_height(self, tx_hash, known_height=None):
-        restricted = True  # by default, check master for consistency
-        if known_height:
-            if 0 < known_height < self.remote_height - 10:
-                restricted = False  # we can get from any server, its old
+        restricted = not known_height or 0 > known_height > self.remote_height - 10
         return self.rpc('blockchain.transaction.get_height', [tx_hash], restricted)
 
     def get_merkle(self, tx_hash, height):
-        restricted = True  # by default, check master for consistency
-        if 0 < height < self.remote_height - 10:
-            restricted = False  # we can get from any server, its old
+        restricted = 0 > height > self.remote_height - 10
         return self.rpc('blockchain.transaction.get_merkle', [tx_hash, height], restricted)
 
     def get_headers(self, height, count=10000):