Merge pull request #92 from ethpandaops/add-shadowfork-from-file

add shadowfork with file

Dockerfile

@@ -1,5 +1,5 @@
-FROM golang:1.19 as builder
-RUN git clone https://github.com/protolambda/eth2-testnet-genesis.git \
+FROM golang:1.20 as builder
+RUN git clone https://github.com/protolambda/eth2-testnet-genesis.git  \
     && cd eth2-testnet-genesis \
     && go install . \
     && go install github.com/protolambda/eth2-val-tools@latest \

README.md

@@ -34,6 +34,13 @@ SERVER_PORT    | 8000    | Web server port
 
 Besides that, you can also use ENV vars in your configuration files. One way of doing this is via the [values.env](config-example/values.env) configuration file. These will be replaced during runtime.
 
+### Shadow Fork
+If shadow fork from file is the preferred option, then please ensure the latest block `json` response is collected along with
+transactions. This can be done with the below call for example:
+```sh
+curl -H "Content-Type: application/json" --data-raw '{ "jsonrpc":"2.0","method":"eth_getBlockByNumber", "params":[ "latest", true ], "id":1 }' localhost:8545
+```
+
 ### Available tools within the image
 
 Name | Source

config-example/el/latest_block.json

@@ -0,0 +1 @@
+{"jsonrpc":"2.0","id":1,"result":{}}

config-example/values.env

@@ -16,6 +16,7 @@ export WITHDRAWAL_TYPE="0x00"
 export WITHDRAWAL_ADDRESS=0xf97e180c050e5Ab072211Ad2C213Eb5AEE4DF134
 export BEACON_STATIC_ENR="enr:-Iq4QJk4WqRkjsX5c2CXtOra6HnxN-BMXnWhmhEQO9Bn9iABTJGdjUOurM7Btj1ouKaFkvTRoju5vz2GPmVON2dffQKGAX53x8JigmlkgnY0gmlwhLKAlv6Jc2VjcDI1NmsxoQK6S-Cii_KmfFdUJL2TANL3ksaKUnNXvTCv1tLwXs0QgIN1ZHCCIyk"
 #export SHADOW_FORK_RPC="http://docker.for.mac.localhost:8545"
+#export SHADOW_FORK_FILE="/config/el/latest_block.json"
 export GENESIS_TIMESTAMP=0
 export GENESIS_DELAY=60
 export GENESIS_GASLIMIT=25000000

entrypoint.sh

@@ -61,7 +61,9 @@ gen_cl_config(){
         if [[ $WITHDRAWAL_TYPE == "0x01" ]]; then
           genesis_args+=(--eth1-withdrawal-address $WITHDRAWAL_ADDRESS)
         fi
-        if [[ $SHADOW_FORK_RPC != "" ]]; then
+        if [[ $SHADOW_FORK_FILE != "" ]]; then
+          genesis_args+=(--shadow-fork-block-file=$SHADOW_FORK_FILE --eth1-config "")
+        elif [[ $SHADOW_FORK_RPC != "" ]]; then
           genesis_args+=(--shadow-fork-eth1-rpc=$SHADOW_FORK_RPC --eth1-config "")
         else
           genesis_args+=(--eth1-config /data/custom_config_data/genesis.json)
@@ -76,6 +78,8 @@ gen_cl_config(){
         fi
         /usr/local/bin/eth2-testnet-genesis "${genesis_args[@]}"
         /usr/local/bin/zcli pretty capella BeaconState /data/custom_config_data/genesis.ssz > /data/custom_config_data/parsedBeaconState.json
+        echo "Genesis block number: $(jq -r '.latest_execution_payload_header.block_number' /data/custom_config_data/parsedBeaconState.json)"
+        echo "Genesis block hash: $(jq -r '.latest_execution_payload_header.block_hash' /data/custom_config_data/parsedBeaconState.json)"
         jq -r '.eth1_data.block_hash' /data/custom_config_data/parsedBeaconState.json | tr -d '\n' > /data/custom_config_data/deposit_contract_block_hash.txt
         jq -r '.genesis_validators_root' /data/custom_config_data/parsedBeaconState.json | tr -d '\n' > /data/custom_config_data/genesis_validators_root.txt
     else