Add traffic router, redis subscription, dynamic traffic item module loading

apps/contract-migration/scripts/config/traffic.ini

@@ -0,0 +1,2 @@
+[traffic]
+local.noop_traffic = 2

apps/contract-migration/scripts/import_users.py

@@ -101,7 +101,8 @@ def register_eth(i, u):
     ps.get_message()
     m = ps.get_message(timeout=args.timeout)
     try:
-        address = json.loads(m['data'])
+        r = json.loads(m['data'])
+        address = r['result']
     except TypeError as e:
         if m == None:
             logg.critical('empty response from redis callback (did the service crash?)')

apps/contract-migration/scripts/local/noop_traffic.py

@@ -0,0 +1,9 @@
+# standard imports
+import logging
+
+logging.basicConfig(level=logging.WARNING)
+logg = logging.getLogger()
+
+
+def do(config, tokens, accounts, block_number, tx_index):
+    logg.debug('running {} {} {}'.format(__name__, tokens, accounts))

apps/contract-migration/scripts/requirements.txt

@@ -1,12 +1,12 @@
 psycopg2==2.8.6
 chainlib~=0.0.1a15
-chainsyncer==0.0.1a9
-cic-eth==0.10.0a28
-cic-registry==0.5.3a19
-confini==0.3.6rc1
+chainsyncer~=0.0.1a9
+cic-eth~=0.10.0a28
+cic-registry~=0.5.3a19
+confini~=0.3.6rc3
 celery==4.4.7
 redis==3.5.3
-hexathon==0.0.1a3
+hexathon~=0.0.1a3
 faker==4.17.1
 cic-types==0.1.0a7+build.1c254367
-eth-accounts-index==0.0.10a10
+eth-accounts-index~=0.0.10a10

apps/contract-migration/scripts/traffic.py

@@ -4,8 +4,13 @@ import logging
 import argparse
 import re
 import sys
+import uuid
+import importlib
+import copy
+import random
 
 # external imports
+import redis
 import confini
 import web3
 from cic_registry import CICRegistry
@@ -26,6 +31,11 @@ from hexathon import strip_0x
 
 logging.basicConfig(level=logging.WARNING)
 logg = logging.getLogger()
+logging.getLogger('urllib3').setLevel(logging.CRITICAL)
+logging.getLogger('websockets.protocol').setLevel(logging.CRITICAL)
+logging.getLogger('web3.RequestManager').setLevel(logging.CRITICAL)
+logging.getLogger('web3.providers.WebsocketProvider').setLevel(logging.CRITICAL)
+logging.getLogger('web3.providers.HTTPProvider').setLevel(logging.CRITICAL)
 
 script_dir = os.path.realpath(os.path.dirname(__file__))
 default_data_dir = '/usr/local/share/cic/solidity/abi'
@@ -82,6 +92,8 @@ config.add(__signer_address, '_SIGNER_ADDRESS')
 logg.debug('now have key for signer address {}'.format(config.get('_SIGNER_ADDRESS')))
 signer = EIP155Signer(keystore)
 
+logg.debug('config:\n{}'.format(config))
+
 
 # web3 input
 # TODO: Replace with chainlib
@@ -95,7 +107,64 @@ elif re.match(re_http, config.get('ETH_PROVIDER')):
 w3 = web3.Web3(blockchain_provider)
 
 
-logg.debug('config:\n{}'.format(config))
+class TrafficItem:
+
+    def __init__(self, item):
+        self.method = item.do
+        self.uuid = uuid.uuid4()
+        self.complete = False
+
+
+class TrafficRouter:
+
+    def __init__(self, batch_size=1):
+        self.items = []
+        self.weights = []
+        self.total_weights = 0
+        self.batch_size = batch_size
+        self.reserved = {}
+        self.reserved_count = 0
+        self.traffic = {}
+
+
+    def add(self, item, weight):
+        self.weights.append(self.total_weights)
+        self.total_weights += weight
+        m = importlib.import_module(item)
+        self.items.append(m)
+        logg.debug('found traffic item {} weight {}'.format(k, v))
+        
+
+    def reserve(self):
+        if len(self.reserved) == self.batch_size:
+            return None
+
+        n = random.randint(0, self.total_weights)
+        item = self.items[0]
+        for i in range(len(self.weights)):
+            if n <= self.weights[i]:
+                item = self.items[i]
+                break
+
+        ti = TrafficItem(item)
+        self.reserved[ti.uuid] = ti
+        return ti
+
+
+    def release(self, k):
+        del self.reserved[k]
+
+
+# parse traffic items
+traffic_router = TrafficRouter()
+for k in config.all():
+    if len(k) > 8 and k[:8] == 'TRAFFIC_':
+        v = int(config.get(k))
+        try:
+            traffic_router.add(k[8:].lower(), v)
+        except ModuleNotFoundError as e:
+            logg.critical('requested traffic item module not found: {}'.format(e))
+            sys.exit(1)
 
 
 class TokenOracle:
@@ -122,7 +191,7 @@ class TokenOracle:
 
             logg.debug('adding token idx {} symbol {} address {}'.format(i, token_symbol, token_address))
 
-        return self.tokens
+        return copy.copy(self.tokens)
 
 
 class AccountsOracle:
@@ -146,16 +215,28 @@ class AccountsOracle:
             self.accounts.append(account)
             logg.debug('adding account {}'.format(account))
 
-        return self.accounts
+        return copy.copy(self.accounts)
 
 
-class Refresher:
+class Handler:
 
-    def __init__(self, chain_spec, registry):
+    def __init__(self, config, chain_spec, registry, traffic_router):
         self.chain_spec = chain_spec
         self.registry = registry
         self.token_oracle = TokenOracle(self.chain_spec, self.registry)
         self.accounts_oracle = AccountsOracle(self.chain_spec, self.registry)
+        self.traffic_router = traffic_router
+        self.redis_channel = str(uuid.uuid4())
+        self.pubsub = self.__connect_redis(self.redis_channel, config)
+
+
+    def __connect_redis(self, redis_channel, config):
+        r = redis.Redis(config.get('REDIS_HOST'), config.get('REDIS_PORT'), config.get('REDIS_DB'))
+        redis_pubsub = r.pubsub()
+        redis_pubsub.subscribe(redis_channel)
+        logg.debug('redis connected on channel {}'.format(redis_channel))
+        return redis_pubsub
+
 
     def refresh(self, block_number, tx_index):
         tokens = self.token_oracle.get_tokens()
@@ -163,11 +244,30 @@ class Refresher:
 
         if len(accounts) == 0:
             logg.error('no accounts yet')
+            #return
 
         elif len(tokens) == 0:
             logg.error('no tokens yet')
+            #return
+
+        item = traffic_router.reserve()
+        if item != None:
+            item.method(config, tokens, accounts, block_number, tx_index)
+
+        # TODO: add drain
+        m = self.pubsub.get_message(timeout=0.01)
+        if m != None
+            pass
+
+
+    def name(self):
+        return 'traffic_item_handler'
+
+
+    def filter(self, conn, block, tx, session):
+        logg.debug('handler get {}'.format(tx))
+  
 
-   
 def main(local_config=None):
 
     if local_config != None:
@@ -197,14 +297,20 @@ def main(local_config=None):
     gas_oracle = DefaultGasOracle(conn)
     nonce_oracle = DefaultNonceOracle(config.get('_SIGNER_ADDRESS'), conn)
 
+    # Set up magic traffic handler
+    handler = Handler(config, chain_spec, CICRegistry, traffic_router)
+
+
     # Set up syncer
     syncer_backend = MemBackend(str(chain_spec), 0)
     o = block_latest()
     r = conn.do(o)
     block_offset = int(strip_0x(r), 16) + 1
     syncer_backend.set(block_offset, 0)
-    refresher_callback = Refresher(chain_spec, CICRegistry)
-    syncer = HeadSyncer(syncer_backend, loop_callback=refresher_callback.refresh)
+
+
+    syncer = HeadSyncer(syncer_backend, loop_callback=handler.refresh)
+    syncer.add_filter(handler)
     syncer.loop(1, conn)
 
 if __name__ == '__main__':