Make backend properties static across filters

eth_monitor/filters/__init__.py

@@ -0,0 +1 @@
+from .base import *

eth_monitor/filters/base.py

@@ -0,0 +1,54 @@
+# standard imports
+import os
+import logging
+
+# external imports
+from chainsyncer.backend.file import chain_dir_for
+from leveldir.numeric import NumDir
+from leveldir.hex import HexDir
+
+logg = logging.getLogger(__name__)
+
+base_dir = '/var/lib'
+
+
+class RuledFilter:
+
+    cache_root = os.path.join(base_dir, 'eth_monitor')
+    chain_dir = None
+    cache_dir = None
+    block_num_path = None
+    block_num_dir = None
+    block_hash_path = None
+    block_hash_dir = None
+    tx_path = None
+    tx_dir = None
+
+
+    def __init__(self, rules_filter=None):
+        if self.chain_dir == None:
+            raise RuntimeError('filter must be initialized. call RuledFilter.init() first')
+        self.rules_filter = rules_filter
+
+
+    @staticmethod
+    def init(chain_spec, cache_root=None, rules_filter=None):
+        if cache_root != None:
+            RuledFilter.cache_root = os.path.join(cache_root, 'eth_monitor')
+        RuledFilter.chain_dir = chain_dir_for(RuledFilter.cache_root)
+        RuledFilter.cache_dir = os.path.join(RuledFilter.chain_dir, 'cache')
+        RuledFilter.block_num_path = os.path.join(RuledFilter.cache_dir, 'block', 'num')
+        RuledFilter.block_num_dir = NumDir(RuledFilter.block_num_path, [100000, 1000])
+        RuledFilter.block_hash_path = os.path.join(RuledFilter.cache_dir, 'block', 'hash')
+        RuledFilter.block_hash_dir = HexDir(RuledFilter.block_hash_path, 32, levels=2)
+        RuledFilter.tx_path = os.path.join(RuledFilter.cache_dir, 'tx')
+        RuledFilter.tx_dir = HexDir(RuledFilter.tx_path, 32, levels=2)
+
+
+    def filter(self, conn, block, tx, db_session=None):
+        if self.rules_filter != None:
+            if not self.rules_filter.apply_rules(tx):
+                logg.debug('rule match failed for tx {}'.format(tx.hash))
+                return
+        logg.info('applying filter {}'.format(self))
+        self.ruled_filter(conn, block, tx, db_session=db_session)

eth_monitor/filters/cache.py

@@ -3,30 +3,15 @@ import os
 import logging
 
 # external imports
-from chainsyncer.backend.file import chain_dir_for
-from leveldir.numeric import NumDir
-from leveldir.hex import HexDir
 from hexathon import strip_0x
-from chainlib.eth.address import is_same_address
 
-base_dir = '/var/lib'
+# local imports
+from eth_monitor.filters import RuledFilter
 
-logg = logging.getLogger()
+logg = logging.getLogger(__name__)
 
-class CacheFilter:
-
-    def __init__(self, chain_spec, cache_root=base_dir, rules_filter=None):
-        cache_root = os.path.join(cache_root, 'eth_monitor')
-        chain_dir = chain_dir_for(cache_root)
-        self.cache_dir = os.path.join(chain_dir, 'cache')
-        block_num_path = os.path.join(self.cache_dir, 'block', 'num')
-        self.block_num_dir = NumDir(block_num_path, [100000, 1000])
-        block_hash_path = os.path.join(self.cache_dir, 'block', 'hash')
-        self.block_hash_dir = HexDir(block_hash_path, 32, levels=2)
-        tx_path = os.path.join(self.cache_dir, 'tx')
-        self.tx_dir = HexDir(tx_path, 32, levels=2)
-        self.rules_filter = rules_filter
 
+class CacheFilter(RuledFilter):
 
     def block_callback(self, block, extra=None):
         src = str(block.src()).encode('utf-8')
@@ -35,10 +20,6 @@ class CacheFilter:
         self.block_num_dir.add(block.number, hash_bytes)
 
 
-    def filter(self, conn, block, tx, db_session=None):
-        if self.rules_filter != None:
-            if not self.rules_filter.apply_rules(tx):
-                logg.debug('rule match failed for tx {}'.format(tx.hash))
-                return
+    def ruled_filter(self, conn, block, tx, db_session=None):
         src = str(tx.src()).encode('utf-8')
         self.tx_dir.add(bytes.fromhex(strip_0x(tx.hash)), src)

eth_monitor/rules.py

@@ -0,0 +1,42 @@
+class AddressRules:
+
+    def __init__(self, include_by_default=False):
+        self.excludes = []
+        self.includes = []
+        self.include_by_default = include_by_default
+
+
+    def exclude(self, sender=None, recipient=None, executable=None):
+        self.excludes.append((sender, recipient, executable,))
+        logg.info('cache filter added EXCLUDE rule sender {} recipient {} executable {}'.format(sender, recipient, executable))
+
+
+    def include(self, sender=None, recipient=None, executable=None):
+        self.includes.append((sender, recipient, executable,))
+        logg.info('cache filter added INCLUDE rule sender {} recipient {} executable {}'.format(sender, recipient, executable))
+
+
+    def apply_rules(self, tx):
+        v = False
+
+        for rule in self.includes:
+            if rule[0] != None and is_same_address(tx.outputs[0], rule[0]):
+                logg.debug('tx {} rule INCLUDE match in SENDER {}'.format(tx.hash, tx.outputs[0]))
+                v = True
+            elif rule[1] != None and is_same_address(tx.inputs[0], rule[1]):
+                logg.debug('tx {} rule INCLUDE match in RECIPIENT {}'.format(tx.hash, tx.inputs[0]))
+                v = True
+            elif rule[2] != None and is_same_address(tx.inputs[0], rule[2]):
+                logg.debug('tx {} rule INCLUDE match in ExECUTABLE {}'.format(tx.hash, tx.inputs[0]))
+                v = True
+        for rule in self.excludes:
+            if rule[0] != None and is_same_address(tx.outputs[0], rule[0]):
+                logg.debug('tx {} rule INCLUDE match in SENDER {}'.format(tx.hash, tx.outputs[0]))
+                v = False
+            elif rule[1] != None and is_same_address(tx.inputs[0], rule[1]):
+                logg.debug('tx {} rule INCLUDE match in ExECUTABLE {}'.format(tx.hash, tx.inputs[0]))
+                v = False
+            elif rule[2] != None and is_same_address(tx.inputs[0], rule[2]):
+                logg.debug('tx {} rule INCLUDE match in ExECUTABLE {}'.format(tx.hash, tx.inputs[0]))
+                v = False
+        return v

eth_monitor/runnable/sync.py

@@ -23,6 +23,7 @@ from chainsyncer.filter import NoopFilter
 from eth_monitor.chain import EthChainInterface
 from eth_monitor.filters.cache import CacheFilter
 from eth_monitor.rules import AddressRules
+from eth_monitor.filters import RuledFilter
 
 logging.basicConfig(level=logging.WARNING)
 logg = logging.getLogger()
@@ -139,15 +140,17 @@ def setup_address_rules(includes_file=None, excludes_file=None, include_default=
     return rules
 
 
-def setup_cache_filter(chain_spec, cache_dir, rules_filter=None):
+def setup_filter(chain_spec, cache_dir):
     cache_dir = os.path.realpath(cache_dir)
     if cache_dir == None:
         import tempfile
         cache_dir = tempfile.mkdtemp()
-    logg.info('using dir {}'.format(cache_dir))
-    cache_filter = CacheFilter(chain_spec, cache_dir, rules_filter=rules_filter)
+    logg.info('using chain spec {} and dir {}'.format(chain_spec, cache_dir))
+    RuledFilter.init(chain_spec, cache_dir)
 
-    return cache_filter
+
+def setup_cache_filter(rules_filter=None):
+    return CacheFilter(rules_filter=rules_filter)
 
 
 def setup_backend_resume(chain_spec, block_offset, state_dir, callback, sync_offset=0, skip_history=False):
@@ -194,9 +197,12 @@ if __name__ == '__main__':
             include_default=bool(args.include_default),
             )
 
-    cache_filter = setup_cache_filter(
+    setup_filter(
             chain_spec,
             args.cache_dir,
+            )
+
+    cache_filter = setup_cache_filter(
             rules_filter=address_rules,
             )