refactor: remove slots per epoch (#285)

.circleci/tests/nimbus-mev.json

-{   
+{
     "participants": [{
         "el_client_type": "geth",
         "cl_client_type": "nimbus"
-    }],    
+    }],
     "network_params": {
         "network_id": "3151908",
         "deposit_contract_address": "0x4242424242424242424242424242424242424242",
         "seconds_per_slot": 12,
-        "slots_per_epoch": 32,
         "num_validator_keys_per_node": 64,
         "preregistered_validator_keys_mnemonic": "giant issue aisle success illegal bike spike question tent bar rely arctic volcano long crawl hungry vocal artwork sniff fantasy very lucky have athlete",
         "capella_fork_epoch": 1
-    },    
+    },
     "global_client_log_level": "info",
     "mev_type": "full"
-}
+}
\ No newline at end of file

README.md

@@ -204,9 +204,6 @@ To configure the package behaviour, you can modify your `network_params.json` fi
         //  Number of seconds per slot on the Beacon chain
         "seconds_per_slot": 12,
 
-        //  Number of slots in an epoch on the Beacon chain
-        "slots_per_epoch": 32,
-
         //  The number of validator keys that each CL validator node should get
         "num_validator_keys_per_node": 64,
 

main.star

@@ -169,7 +169,6 @@ def run(plan, args={}):
             genesis_validators_root,
             builder_uri,
             network_params.seconds_per_slot,
-            network_params.slots_per_epoch,
         )
         mev_flood_module.spam_in_background(
             plan,
@@ -237,7 +236,6 @@ def run(plan, args={}):
                 all_cl_client_contexts[0],
                 network_params.deneb_fork_epoch,
                 network_params.seconds_per_slot,
-                network_params.slots_per_epoch,
                 network_params.genesis_delay,
             )
             plan.print("Succesfully launched blob spammer")
@@ -249,7 +247,6 @@ def run(plan, args={}):
                 genesis_constants.PRE_FUNDED_ACCOUNTS,
                 all_el_client_contexts,
                 all_cl_client_contexts[0],
-                network_params.slots_per_epoch,
                 goomy_blob_params,
             )
             plan.print("Succesfully launched goomy the blob spammer")

network_params.json

@@ -18,7 +18,6 @@
 		"network_id": "3151908",
 		"deposit_contract_address": "0x4242424242424242424242424242424242424242",
 		"seconds_per_slot": 12,
-		"slots_per_epoch": 32,
 		"num_validator_keys_per_node": 64,
 		"preregistered_validator_keys_mnemonic": "giant issue aisle success illegal bike spike question tent bar rely arctic volcano long crawl hungry vocal artwork sniff fantasy very lucky have athlete",
 		"genesis_delay": 120,

src/blob_spammer/blob_spammer.star

@@ -11,7 +11,6 @@ def launch_blob_spammer(
     cl_client_context,
     deneb_fork_epoch,
     seconds_per_slot,
-    slots_per_epoch,
     genesis_delay,
 ):
     config = get_config(
@@ -20,7 +19,6 @@ def launch_blob_spammer(
         cl_client_context,
         deneb_fork_epoch,
         seconds_per_slot,
-        slots_per_epoch,
         genesis_delay,
     )
     plan.add_service(SERVICE_NAME, config)
@@ -32,10 +30,9 @@ def get_config(
     cl_client_context,
     deneb_fork_epoch,
     seconds_per_slot,
-    slots_per_epoch,
     genesis_delay,
 ):
-    dencunTime = (deneb_fork_epoch * slots_per_epoch * seconds_per_slot) + genesis_delay
+    dencunTime = (deneb_fork_epoch * 32 * seconds_per_slot) + genesis_delay
     return ServiceConfig(
         image=IMAGE_NAME,
         entrypoint=ENTRYPOINT_ARGS,

src/mev_relay/mev_relay_launcher.star

@@ -26,7 +26,6 @@ def launch_mev_relay(
     validator_root,
     builder_uri,
     seconds_per_slot,
-    slots_per_epoch=32,
 ):
     redis = redis_module.run(plan)
     # making the password postgres as the relay expects it to be postgres
@@ -50,7 +49,6 @@ def launch_mev_relay(
         "DENEB_FORK_VERSION": "0x50000038",
         "GENESIS_VALIDATORS_ROOT": validator_root,
         "SEC_PER_SLOT": str(seconds_per_slot),
-        "SLOTS_PER_EPOCH": str(slots_per_epoch),
     }
 
     redis_url = "{}:{}".format(redis.hostname, redis.port_number)

src/package_io/parse_input.star

@@ -28,6 +28,9 @@ HIGH_DENEB_VALUE_FORK_VERKLE = 20000
 FLASHBOTS_MEV_BOOST_PORT = 18550
 MEV_BOOST_SERVICE_NAME_PREFIX = "mev-boost-"
 
+# Minimum number of validators required for a network to be valid is 64
+MIN_VALIDATORS = 64
+
 DEFAULT_ADDITIONAL_SERVICES = [
     "tx_spammer",
     "blob_spammer",
@@ -139,7 +142,6 @@ def parse_input(plan, input_args):
                 "deposit_contract_address"
             ],
             seconds_per_slot=result["network_params"]["seconds_per_slot"],
-            slots_per_epoch=result["network_params"]["slots_per_epoch"],
             genesis_delay=result["network_params"]["genesis_delay"],
             capella_fork_epoch=result["network_params"]["capella_fork_epoch"],
             deneb_fork_epoch=result["network_params"]["deneb_fork_epoch"],
@@ -273,9 +275,6 @@ def parse_network_params(input_args):
             "preregistered_validator_keys_mnemonic is empty or spaces it needs to be of non zero length"
         )
 
-    if result["network_params"]["slots_per_epoch"] == 0:
-        fail("slots_per_epoch is 0 needs to be > 0 ")
-
     if result["network_params"]["seconds_per_slot"] == 0:
         fail("seconds_per_slot is 0 needs to be > 0 ")
 
@@ -295,15 +294,14 @@ def parse_network_params(input_args):
     ):
         fail("electra can only happen with capella genesis not bellatrix")
 
-    required_num_validators = 2 * result["network_params"]["slots_per_epoch"]
     actual_num_validators = (
         total_participant_count
         * result["network_params"]["num_validator_keys_per_node"]
     )
-    if required_num_validators > actual_num_validators:
+    if MIN_VALIDATORS > actual_num_validators:
         fail(
-            "required_num_validators - {0} is greater than actual_num_validators - {1}".format(
-                required_num_validators, actual_num_validators
+            "We require at least {0} validators but got {1}".format(
+                MIN_VALIDATORS, actual_num_validators
             )
         )
 
@@ -346,7 +344,6 @@ def default_network_params():
         "network_id": "3151908",
         "deposit_contract_address": "0x4242424242424242424242424242424242424242",
         "seconds_per_slot": 12,
-        "slots_per_epoch": 32,
         "genesis_delay": 120,
         "capella_fork_epoch": 0,
         "deneb_fork_epoch": 500,