Revert "Implement mocks on generic tx, block"

This reverts commit dd1879bb91.

CHANGELOG

@@ -1,3 +1,19 @@
+- 0.2.11
+	* Upgrade shep to handle exception in filestore list
+- 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/base.py

@@ -13,13 +13,13 @@ logg = logging.getLogger(__name__)
 
 class ChaindAdapter:
 
-    def __init__(self, chain_spec, state_store, index_store, counter_store, cache_adapter, dispatcher, cache=None, pending_retry_threshold=0, error_retry_threshold=0):
+    def __init__(self, chain_spec, state_store, index_store, counter_store, cache_adapter, dispatcher, cache=None, pending_retry_threshold=0, error_retry_threshold=0, store_sync=True):
         self.cache_adapter = cache_adapter
         self.dispatcher = dispatcher
         store_lock = StoreLock()
         while True:
             try:
-                self.store = QueueStore(chain_spec, state_store, index_store, counter_store, cache=cache)
+                self.store = QueueStore(chain_spec, state_store, index_store, counter_store, cache=cache, sync=store_sync)
                 break
             except FileNotFoundError as e:
                 logg.debug('queuestore instantiation failed, possible race condition (will try again): {}'.format(e))

chaind/adapters/fs.py

@@ -26,13 +26,13 @@ logg = logging.getLogger(__name__)
 
 class ChaindFsAdapter(ChaindAdapter):
 
-    def __init__(self, chain_spec, path, cache_adapter, dispatcher, cache=None, pending_retry_threshold=0, error_retry_threshold=0, digest_bytes=32, event_callback=None):
+    def __init__(self, chain_spec, path, cache_adapter, dispatcher, cache=None, pending_retry_threshold=0, error_retry_threshold=0, digest_bytes=32, event_callback=None, store_sync=True):
         factory = SimpleFileStoreFactory(path, use_lock=True).add
         state_store = Status(factory, allow_invalid=True, event_callback=event_callback)
         index_path = os.path.join(path, 'tx')
         index_store = IndexStore(index_path, digest_bytes=digest_bytes)
         counter_store = CounterStore(path)
-        super(ChaindFsAdapter, self).__init__(chain_spec, state_store, index_store, counter_store, cache_adapter, dispatcher, cache=cache, pending_retry_threshold=pending_retry_threshold, error_retry_threshold=error_retry_threshold)
+        super(ChaindFsAdapter, self).__init__(chain_spec, state_store, index_store, counter_store, cache_adapter, dispatcher, cache=cache, pending_retry_threshold=pending_retry_threshold, error_retry_threshold=error_retry_threshold, store_sync=store_sync)
 
 
     def put(self, signed_tx):
@@ -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
 
@@ -90,12 +90,19 @@ class ChaindFsAdapter(ChaindAdapter):
     def succeed(self, block, tx):
         if self.store.is_reserved(tx.hash):
             raise QueueLockError(tx.hash)
-
-        return self.store.final(tx.hash, block, tx, error=False)
+        r = self.store.final(tx.hash, block, tx, error=False)
+        (k, v) = self.store.get(tx.hash)
+        self.store.purge(k)
+        return r
 
 
     def fail(self, block, tx):
-        return self.store.final(tx.hash, block, tx, error=True)
+        if self.store.is_reserved(tx.hash):
+            raise QueueLockError(tx.hash)
+        r = self.store.final(tx.hash, block, tx, error=True)
+        (k, v) = self.store.get(tx.hash)
+        self.store.purge(k)
+        return r
 
 
     def sendfail(self):
@@ -128,7 +135,8 @@ class ChaindFsAdapter(ChaindAdapter):
         r = None
         try:
             r = self.dispatcher.send(tx_wire)
-        except RPCException:
+        except RPCException as e:
+            logg.error('dispatch send failed for {}: {}'.format(tx_hash, e))
             self.store.fail(tx_hash)
             return False
 

chaind/dispatch.py

@@ -0,0 +1,33 @@
+# standard imports
+import logging
+
+# local ipmorts
+from chaind.adapters.fs import ChaindFsAdapter
+from chaind.eth.cache import EthCacheTx
+
+logg = logging.getLogger(__name__)
+
+
+class DispatchProcessor:
+
+    def __init__(self, chain_spec, queue_dir, dispatcher):
+        self.dispatcher = dispatcher
+        self.chain_spec = chain_spec,
+        self.queue_dir = queue_dir
+
+
+    def process(self, rpc, limit=50):
+        adapter = ChaindFsAdapter(
+            self.chain_spec,
+            self.queue_dir, 
+            EthCacheTx,
+            self.dispatcher,
+            )
+        
+        upcoming = adapter.upcoming(limit=limit)
+        logg.info('processor has {} candidates for {}, processing with limit {}'.format(len(upcoming), self.chain_spec, limit))
+        i = 0
+        for tx_hash in upcoming:
+            if adapter.dispatch(tx_hash):
+                i += 1
+        return i

chaind/filter.py

@@ -26,27 +26,51 @@ 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
@@ -54,15 +78,16 @@ class StateFilter(SyncFilter):
                 logg.debug('skipping not local transaction {}'.format(tx.hash))
                 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 +101,18 @@ 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

@@ -0,0 +1,34 @@
+# standard imports
+import time
+
+# local imports
+from .error import BackendError
+
+BASE_DELAY = 0.01
+BASE_DELAY_LIMIT = 10.0
+
+
+class StoreLock:
+
+    def __init__(self, delay=BASE_DELAY, delay_limit=BASE_DELAY_LIMIT, error=BackendError, description=None):
+        self.base_delay = delay
+        self.delay = delay
+        self.delay_limit = delay_limit
+        self.error = error
+        self.description = description
+
+    
+    def again(self, e=None):
+        if self.delay > self.delay_limit:
+            err = None
+            if e != None:
+                err = str(e)
+            else:
+                err = self.description
+            raise self.error(err)
+        time.sleep(self.delay)
+        self.delay *= 2
+
+
+    def reset(self):
+        self.delay = self.base_delay

chaind/session.py

@@ -22,7 +22,7 @@ logg = logging.getLogger(__name__)
 
 class SessionController:
 
-    def __init__(self, config, adapter, processor):
+    def __init__(self, config, processor):
         self.dead = False
         os.makedirs(os.path.dirname(config.get('SESSION_SOCKET_PATH')), exist_ok=True)
         try:
@@ -37,7 +37,6 @@ class SessionController:
         self.srv.settimeout(float(config.get('SESSION_DISPATCH_DELAY')))
         self.processor = processor
         self.chain_spec = config.get('CHAIN_SPEC')
-        self.adapter = adapter
 
 
     def shutdown(self, signo, frame):
@@ -65,7 +64,7 @@ class SessionController:
         r = None
         while True:
             try:
-                r = self.processor(self.chain_spec, self.adapter, conn)
+                r = self.processor(conn)
                 break
             except BackendError as e:
                 state_lock.again(e)

chaind/unittest/common.py

@@ -29,8 +29,6 @@ class MockDispatcher:
 
 
     def send(self, v):
-        import sys
-        sys.stderr.write('susu v {} {}\n'.format(v, self.fails))
         if v in self.fails:
             raise RPCException('{} is in fails'.format(v))
         pass
@@ -41,3 +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~=0.1.8
-chainsyncer~=0.4.3
+chainlib~=0.1.2
+chainqueue~=0.1.15
+chainsyncer~=0.4.7
 confini~=0.6.0
 funga~=0.5.2
 pyxdg~=0.26

setup.cfg

@@ -1,6 +1,6 @@
 [metadata]
 name = chaind
-version = 0.2.2
+version = 0.2.11
 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):