get anvil account private keys and use nwaku container index to select one

docker-compose.yml

@@ -16,16 +16,20 @@ services:
       com.centurylinklabs.watchtower.enable: '${WATCHTOWER_ENABLED:-false}'
     ports:
       - 0.0.0.0:8545:8545
+    environment:
+      - ANVIL_ACC=${ACCOUNTS}
     command:
       - anvil
         --port=8545
         --host=0.0.0.0
         --chain-id=1337
-        --accounts=1
+        --accounts=${NUM_NWAKU_NODES:-5}
         --allow-origin=*
         --block-time=12
         --silent
-        --config-out=anvil-config.txt
+        --config-out=/shared/anvil-config.txt
+    volumes:
+      - accounts-volume:/shared
     networks:
       - simulation
 
@@ -74,7 +78,6 @@ services:
     entrypoint: sh
     environment:
       - RPC_URL=${RPC_URL:-http://foundry:8545}
-      - PRIVATE_KEY=0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80
       - RLN_CONTRACT_ADDRESS=0x9fE46736679d2D9a65F0992F2272dE9f3c7fa6e0
       - RLN_CREDENTIAL_PATH=/keystore.json
       - RLN_CREDENTIAL_PASSWORD=passw123
@@ -82,6 +85,8 @@ services:
       - '/opt/run_nwaku.sh'
     volumes:
       - ./run_nwaku.sh:/opt/run_nwaku.sh:Z
+      - ./parseAccountsDetails.sh:/opt/parseAccountsDetails.sh:Z
+      - accounts-volume:/shared
     depends_on:
       contract-repo-deployer:
         condition: service_completed_successfully
@@ -214,3 +219,6 @@ services:
       - foundry
     networks:
       - simulation
+
+volumes:
+  accounts-volume:

parseAccountsDetails.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+
+# Read the JSON file
+json_content=$(cat /shared/anvil-config.txt)
+
+# Extract available_accounts and private_keys arrays using jq
+available_accounts=$(echo "$json_content" | jq -r '.available_accounts[]')
+private_keys=$(echo "$json_content" | jq -r '.private_keys[]')
+
+# Convert the extracted strings to Bash arrays
+available_accounts_array=()
+while IFS= read -r account; do
+    available_accounts_array+=("$account")
+done <<< "$available_accounts"
+
+private_keys_array=()
+while IFS= read -r key; do
+    private_keys_array+=("$key")
+done <<< "$private_keys"
+
+# echo "ACCOUNT: ${available_accounts_array[$1-1]}"
+# echo "PRIVATE KEY: ${private_keys_array[$1-1]}"
+echo ${private_keys_array[$1-1]}

run_nwaku.sh

@@ -1,7 +1,9 @@
-#!/bin/sh
+#!/bin/bash
 
 # Install bind-tools package used for domainname resolution
 apk add bind-tools
+apk add jq
+apk add bash
 
 if test -f .env; then
   echo "Using .env file"  
@@ -33,18 +35,35 @@ else
     fi
 fi
 
+IP=$(ip a | grep "inet " | grep -Fv 127.0.0.1 | sed 's/.*inet \([^/]*\).*/\1/')
+echo "IP: $IP"
+
+# get the service name you specified in the docker-compose.yml 
+# by a reverse DNS lookup on the IP
+SERVICE=`dig -x $IP +short | cut -d'_' -f2`
+
+# the number of replicas is equal to the A records 
+# associated with the service name
+COUNT=`dig $SERVICE +short | wc -l`
+
+# extract the replica number from the same PTR entry
+INDEX=`dig -x $IP +short | sed 's/.*_\([0-9]*\)\..*/\1/'`
+
+# Hello
+echo "Hello I'm container $INDEX of $COUNT"
+
+
+###########################################################################
 if test -f .$RLN_CREDENTIAL_PATH; then
   echo "$RLN_CREDENTIAL_PATH already exists. Use it instead of creating a new one."
 else
-
+  val=$(/bin/bash ./opt/parseAccountsDetails.sh $INDEX)
-  wait_time=$((RANDOM % 400))
+  echo $val
-  echo "Waiting $wait_time seconds before generating RLN keystore to avoid collision with other nodes."
-  sleep $wait_time;
 
   echo "Generating RLN keystore"
   /usr/bin/wakunode generateRlnKeystore \
     --rln-relay-eth-client-address="$RPC_URL" \
-    --rln-relay-eth-private-key=$PRIVATE_KEY  \
+    --rln-relay-eth-private-key=$val  \
     --rln-relay-eth-contract-address=$RLN_CONTRACT_ADDRESS \
     --rln-relay-cred-path=$RLN_CREDENTIAL_PATH \
     --rln-relay-cred-password=$RLN_CREDENTIAL_PASSWORD \
@@ -52,8 +71,6 @@ else
     --execute
 fi
 
-IP=$(ip a | grep "inet " | grep -Fv 127.0.0.1 | sed 's/.*inet \([^/]*\).*/\1/')
-
 echo "I am a nwaku node"
 
 # Get an unique node index based on the container's IP