Support validator withdrawals (#19)

Adds CL spec settings to enable validator withdrawals and expedite them by reducing the delays between withdrawal (and validator exit) initiation and execution.

To create a testnet genesis Beacon state where withdrawals and exits are possible, this also depends on cerc-io/lighthouse#1.

Reviewed-on: #19
Reviewed-by: David Boreham <dboreham@noreply.git.vdb.to>

.gitea/workflows/triggers/publish-fixturenet-eth-images

@@ -1,4 +1,2 @@
 # Change this file to trigger the job publish-fixturenet-eth-images.yml
-Trigger
+4
-Trigger
-Trigger

stack-orchestrator/compose/docker-compose-fixturenet-plugeth.yml

@@ -27,7 +27,7 @@ services:
       CERC_ALLOW_UNPROTECTED_TXS: ${CERC_ALLOW_UNPROTECTED_TXS:-false}
     env_file:
       - ../config/fixturenet-eth/fixturenet-eth.env
-      - ../config/fixturenet-eth/statediff.env
+      - ../config/fixturenet-plugeth/statediff.env
     image: cerc/fixturenet-plugeth-plugeth:local
     volumes:
       - fixturenet_plugeth_geth_1_data:/root/ethdata

stack-orchestrator/config/fixturenet-eth/fixturenet-eth.env

@@ -14,5 +14,5 @@ ENR_URL="http://fixturenet-eth-bootnode-lighthouse:3000/bootnode/enr.dat"
 CERC_GETH_VMODULE="rpc/*=5"
 CERC_GETH_VERBOSITY=${CERC_GETH_VERBOSITY:-3}
 
-# Used by Lighthouse
+# --debug-level
-SECONDS_PER_ETH1_BLOCK=${SECONDS_PER_ETH1_BLOCK:-3}
+DEBUG_LEVEL=${LIGHTHOUSE_DEBUG_LEVEL:-info}

stack-orchestrator/container-build/cerc-fixturenet-eth-lighthouse/genesis/cl/build_cl.sh

@@ -44,6 +44,11 @@ lcli \
   --interop-genesis-state \
   --force
 
+# Patch the spec with settings not supported by lcli
+sed -i "/^SHARD_COMMITTEE_PERIOD:/s/:.*/: $SHARD_COMMITTEE_PERIOD/" $TESTNET_DIR/config.yaml
+sed -i "/^MIN_VALIDATOR_WITHDRAWABILITY_DELAY:/s/:.*/: $MIN_VALIDATOR_WITHDRAWABILITY_DELAY/" $TESTNET_DIR/config.yaml
+sed -i "/^MAX_SEED_LOOKAHEAD:/s/:.*/: $MAX_SEED_LOOKAHEAD/" $TESTNET_DIR/config.yaml
+
 echo Specification and genesis.ssz generated at $TESTNET_DIR.
 echo "Generating $VALIDATOR_COUNT validators concurrently... (this may take a while)"
 

stack-orchestrator/container-build/cerc-fixturenet-eth-lighthouse/genesis/cl/vars.env

@@ -38,6 +38,13 @@ SECONDS_PER_SLOT=${SECONDS_PER_SLOT:-3}
 # Seconds per Eth1 block
 SECONDS_PER_ETH1_BLOCK=${SECONDS_PER_ETH1_BLOCK:-1}
 
+# Min epochs between validator activation and exit
+SHARD_COMMITTEE_PERIOD=2
+# Min epochs between validator exit and withdrawal
+MIN_VALIDATOR_WITHDRAWABILITY_DELAY=1
+# Delay for validator activation/exit
+MAX_SEED_LOOKAHEAD=1
+
 # Command line arguments for validator client
 VC_ARGS=${VC_ARGS:-""}
 
@@ -53,6 +60,3 @@ ETH1_TTD=${ETH1_TTD:-`cat $ETH1_GENESIS_JSON | jq -r '.config.terminalTotalDiffi
 ETH1_DEPOSIT_CONTRACT_ADDRESS=${ETH1_DEPOSIT_CONTRACT_ADDRESS:-`cat $ETH1_CONFIG_YAML | grep 'deposit_contract_address' | awk '{ print $2 }' | sed 's/"//g'`}
 ETH1_DEPOSIT_CONTRACT_BLOCK=${ETH1_DEPOSIT_CONTRACT_BLOCK:-0x0}
 SUGGESTED_FEE_RECIPIENT=`cat ../build/el/accounts.csv | head -1 | cut -d',' -f2`
-
-# --debug-level
-DEBUG_LEVEL=${LIGHTHOUSE_DEBUG_LEVEL:-info}