Upgrade deps

CHANGELOG

@@ -1,3 +1,17 @@
+- 0.2.10
+	* Upgrade shep to guarantee state lock atomicity
+- 0.2.9
+	* Minimize instantiations of adapters in filter execution
+- 0.2.8
+	* Upgrade chainsyncer
+- 0.2.7
+	* Upgrade chainlib
+- 0.2.6
+	* Deps upgrade
+- 0.2.5
+	* Deps upgrade
+- 0.2.4
+	* Allow omission of state store sync in queue store backend
 - 0.2.2
 	* Fix missing symbol crashes related to race conditions
 - 0.2.1

chaind/adapters/fs.py

@@ -51,11 +51,11 @@ class ChaindFsAdapter(ChaindAdapter):
                 logg.error('I am just a simple syncer and do not know how to handle the state which the tx {} is in: {}'.format(tx_hash, e))
                 return None
             except FileNotFoundError as e:
-                logg.debug('queuestore get {} failed, possible race condition (will try again): {}'.format(tx_hash, e))
+                logg.debug('queuestore get (file missing) {} failed, possible race condition (will try again): {}'.format(tx_hash, e))
                 store_lock.again()
                 continue
             except StateLockedKey as e:
-                logg.debug('queuestore get {} failed, possible race condition (will try again): {}'.format(tx_hash, e))
+                logg.debug('queuestore get (statelock) {} failed, possible race condition (will try again): {}'.format(tx_hash, e))
                 store_lock.again()
                 continue
 

chaind/filter.py

@@ -26,43 +26,69 @@ class StateFilter(SyncFilter):
         self.adapter_path = adapter_path
         self.tx_adapter = tx_adapter
         self.throttler = throttler
+        self.last_block_height = 0
+        self.adapter = None
+        self.store_lock = None
+
+
+    def __get_adapter(self, block, force_reload=False):
+        if self.store_lock == None:
+            self.store_lock = StoreLock()
+
+        reload = False
+        if block.number != self.last_block_height:
+            reload = True
+        elif self.adapter == None:
+            reload = True
+        elif force_reload:
+            reload = True
+        
+        self.last_block_height = block.number
+
+        if reload:
+            while True:
+                logg.info('reloading adapter')
+                try:
+                    self.adapter = ChaindFsAdapter(
+                        self.chain_spec,
+                        self.adapter_path,
+                        self.tx_adapter,
+                        None,
+                        )
+                    break
+                except BackendError as e:
+                    logg.error('adapter instantiation failed: {}, one more try'.format(e))
+                    self.store_lock.again()
+                    continue
+
+        return self.adapter
 
 
     def filter(self, conn, block, tx, session=None):
         cache_tx = None
-        store_lock = StoreLock()
-        queue_adapter = None
+        queue_adapter = self.__get_adapter(block)
+        
+        self.store_lock.reset()
+    
         while True:
-            try:
-                queue_adapter = ChaindFsAdapter(
-                    self.chain_spec,
-                    self.adapter_path,
-                    self.tx_adapter,
-                    None,
-                    )
-            except BackendError as e:
-                logg.error('adapter instantiation failed: {}, one more try'.format(e))
-                store_lock.again()
-                continue
-
-            store_lock.reset()
-
             try:
                 cache_tx = queue_adapter.get(tx.hash)
                 break
             except NotLocalTxError:
                 logg.debug('skipping not local transaction {}'.format(tx.hash))
+                self.__stop_adapter()
                 return False
             except BackendError as e:
-                logg.error('adapter instantiation failed: {}, one more try'.format(e))
-                queue_adapter = None
-                store_lock.again()
+                logg.error('adapter get failed: {}, one more try'.format(e))
+                self.store_lock.again()
+                queue_adapter = self.__get_adapter(block, force_reload=True)
                 continue
 
         if cache_tx == None:
             raise NotLocalTxError(tx.hash)
 
-        store_lock = StoreLock()
+        self.store_lock.reset()
+
         queue_lock = StoreLock(error=QueueLockError)
         while True:
             try:
@@ -76,15 +102,18 @@ class StateFilter(SyncFilter):
                 queue_lock.again()
             except FileNotFoundError as e:
                 logg.debug('queue item {} not found, possible race condition, will retry: {}'.format(tx.hash, e))
-                store_lock.again()
+                self.store_lock.again()
+                queue_adapter = self.__get_adapter(block, force_reload=True)
                 continue
             except NotLocalTxError as e:
                 logg.debug('queue item {} not found, possible race condition, will retry: {}'.format(tx.hash, e))
-                store_lock.again()
+                self.store_lock.again()
+                queue_adapter = self.__get_adapter(block, force_reload=True)
                 continue
             except StateLockedKey as e:
                 logg.debug('queue item {} not found, possible race condition, will retry: {}'.format(tx.hash, e))
-                store_lock.again()
+                self.store_lock.again()
+                queue_adapter = self.__get_adapter(block, force_reload=True)
                 continue
 
         logg.info('filter registered {} for {} in {}'.format(tx.status.name, tx.hash, block))

chaind/lock.py

@@ -5,7 +5,7 @@ import time
 from .error import BackendError
 
 BASE_DELAY = 0.01
-BASE_DELAY_LIMIT = 3.0
+BASE_DELAY_LIMIT = 10.0
 
 
 class StoreLock:

chaind/unittest/common.py

@@ -39,3 +39,9 @@ class MockTx:
     def __init__(self, tx_hash, status=TxStatus.SUCCESS):
         self.hash = tx_hash
         self.status = status
+
+
+class MockBlock:
+
+    def __init__(self, number):
+        self.number = number

requirements.txt

@@ -1,6 +1,6 @@
-chainlib~=0.1.1
-chainqueue~=0.1.10
-chainsyncer~=0.4.3
+chainlib~=0.1.2
+chainqueue~=0.1.13
+chainsyncer~=0.4.5
 confini~=0.6.0
 funga~=0.5.2
 pyxdg~=0.26

setup.cfg

@@ -1,6 +1,6 @@
 [metadata]
 name = chaind
-version = 0.2.4
+version = 0.2.10
 description = Base package for chain queue service
 author = Louis Holbrook
 author_email = dev@holbrook.no

tests/test_fs.py

@@ -14,6 +14,7 @@ from chaind.filter import StateFilter
 # test imports
 from chaind.unittest.common import (
     MockTx,
+    MockBlock,
     MockCacheAdapter,
     MockDispatcher,
     )
@@ -76,7 +77,8 @@ class TestChaindFs(TestChaindFsBase):
         
         fltr = StateFilter(self.chain_spec, self.path, MockCacheAdapter)
         tx = MockTx(hsh)
-        fltr.filter(None, None, tx)
+        block = MockBlock(42)
+        fltr.filter(None, block, tx)
 
 
     def test_fs_filter_fail(self):
@@ -87,7 +89,8 @@ class TestChaindFs(TestChaindFsBase):
         
         fltr = StateFilter(self.chain_spec, self.path, MockCacheAdapter)
         tx = MockTx(hsh, TxStatus.ERROR)
-        fltr.filter(None, None, tx)
+        block = MockBlock(42)
+        fltr.filter(None, block, tx)
 
 
     def test_upcoming(self):