Factor out dispatch processor from chain implementation

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):

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/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)

setup.cfg

@@ -1,6 +1,6 @@
 [metadata]
 name = chaind
-version = 0.2.3
+version = 0.2.4
 description = Base package for chain queue service
 author = Louis Holbrook
 author_email = dev@holbrook.no