feat: add Geth restore pre-task

infrastructure/nomad/playbooks/templates/jobs/mev-commit-geth.nomad.j2

@@ -42,6 +42,110 @@ job "{{ job.name }}" {
       read_only = false
     }
 
+    task "restore" {
+      driver = "exec"
+
+      lifecycle {
+        hook = "prestart"
+      }
+
+      {% if env == 'testenv' %}
+      resources {
+        cores = 6
+        memory = 32768
+      }
+      {% endif %}
+
+      volume_mount {
+        volume = "tmp-volume"
+        destination = "/local/backups"
+        read_only = false
+      }
+
+      {% if env != 'devenv' %}
+      artifact {
+        source = "https://primev-infrastructure-artifacts.s3.us-west-2.amazonaws.com/genesis_{{ version }}.json"
+      }
+      artifact {
+        source = "https://primev-infrastructure-artifacts.s3.us-west-2.amazonaws.com/mev-commit-geth_{{ version }}_Linux_{{ target_system_architecture }}.tar.gz"
+      }
+      {% else %}
+      artifact {
+        source = "http://{{ ansible_facts['default_ipv4']['address'] }}:1111/genesis_{{ version }}.json"
+      }
+      artifact {
+        source = "http://{{ ansible_facts['default_ipv4']['address'] }}:1111/mev-commit-geth_{{ version }}_Linux_{{ target_system_architecture }}.tar.gz"
+      }
+      {% endif %}
+
+      template {
+        data = <<-EOH
+          {%- raw %}
+          GETH_DATA_DIR="/alloc/data/node-{{ env "NOMAD_ALLOC_INDEX" }}"
+          {% endraw %}
+          GENESIS_L1_PATH="local/genesis_{{ version }}.json"
+        EOH
+        destination = "secrets/.env"
+        env = true
+      }
+
+      template {
+        data = <<-EOH
+        #!/usr/bin/env bash
+
+        BACKUP_FILE="local/backups/$(
+          ls -1 local/backups/ |
+          sed -r 's/(.*)_dirty/\1/' |
+          awk -v jobname="{{ job.name }}-{% raw %}{{ env "NOMAD_ALLOC_INDEX" }}{% endraw %}" -F'_' '$2 == jobname {print $3, $0}' |
+          sort -k1,1r |
+          head -n 1 |
+          cut -d' ' -f2
+        )"
+        if [[ ! -f "${BACKUP_FILE}" ]]; then
+          echo "No backup found, skipping restore"
+          exit 0
+        fi
+
+        chmod +x local/mev-commit-geth
+        CHAIN_ID=$(cat "${GENESIS_L1_PATH}" | jq -r .config.chainId)
+
+        if [[ ! -d "${GETH_DATA_DIR}/geth/chaindata" ]]; then
+          echo "Initializing chain data directory"
+          local/mev-commit-geth \
+            --db.engine=pebble \
+            --state.scheme=path \
+            --datadir="${GETH_DATA_DIR}" \
+            init "${GENESIS_L1_PATH}"
+        else
+          echo "Chain data directory already exists, skipping restore"
+          exit 0
+        fi
+
+        echo "Restoring from backup file ${BACKUP_FILE} to ${GETH_DATA_DIR}"
+        echo "Backup file size: $(du -h ${BACKUP_FILE} | cut -f1)"
+        local/mev-commit-geth \
+          --cache=4096 \
+          --verbosity=5 \
+          --datadir="${GETH_DATA_DIR}" \
+          import ${BACKUP_FILE}
+
+        if [[ $? -eq 0 ]]; then
+          echo "Restore successful"
+        else
+          echo "Restore failed"
+          exit 1
+        fi
+        EOH
+        destination = "local/run.sh"
+        perms = "0755"
+      }
+
+      config {
+        command = "bash"
+        args = ["-c", "local/run.sh"]
+      }
+    }
+
     task "node" {
       driver = "exec"
       kill_timeout = "25s"
@@ -228,22 +332,25 @@ job "{{ job.name }}" {
         STATUS=$(nomad alloc status -address="http://{{ ansible_facts['default_ipv4']['address'] }}:4646" -json "${NOMAD_ALLOC_ID}")
         NON_ZERO_EXIT_EVENTS=$(echo "$STATUS" | jq -r '.TaskStates.node.Events[] | select(.ExitCode != 0)')
         if [[ -n "${NON_ZERO_EXIT_EVENTS}" ]]; then
-          echo "The main task did not start or finish gracefully."
+          echo "The main task did not start or finish gracefully"
           BACKUP_FILE+="-dirty"
         fi
-        BACKUP_FILE+=".tar.gz"
+        BACKUP_FILE+=".rlp"
 
+        echo "Exporting chain data from ${GETH_DATA_DIR} to backup file: ${BACKUP_FILE}"
         chmod +x local/mev-commit-geth
-        local/mev-commit-geth export \
+        local/mev-commit-geth \
           --cache 4096 \
-          --syncmode "full" \
-          --datadir ${GETH_DATA_DIR} \
-          ${BACKUP_FILE}
+          --verbosity=5 \
+          --datadir="${GETH_DATA_DIR}" \
+          export ${BACKUP_FILE}
 
-        if [[ -f "${BACKUP_FILE}" ]]; then
-          echo "Backup successful."
+        if [[ "$?" -eq 0 ]] && [[ -f "${BACKUP_FILE}" ]]; then
+          echo "Backup successful"
+          echo "Backup file size: $(du -h ${BACKUP_FILE} | cut -f1)"
         else
-          echo "Backup failed."
+          echo "Backup failed"
+          exit 1
         fi
         EOH
         destination = "local/run.sh"