Add Snap fullnode daemon

multinode-demo/drone.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+#
+# usage: $0 <network path to solana repo on leader machine>
+#
+
+here=$(dirname "$0")
+# shellcheck source=multinode-demo/common.sh
+source "$here"/common.sh
+SOLANA_CONFIG_DIR=config-drone
+
+if [[ -d "$SNAP" ]]; then
+  # Exit if mode is not yet configured
+  # (typically the case after the Snap is first installed)
+  [[ -n "$(snapctl get mode)" ]] || exit 0
+
+  # Select leader from the Snap configuration
+  leader_address="$(snapctl get leader-address)"
+  if [[ -z "$leader_address" ]]; then
+    # Assume drone is running on the same node as the leader by default
+    leader_address="localhost"
+  fi
+  leader=rsync://"$leader_address"
+else
+  leader=${1:-${here}/..}  # Default to local solana repo
+fi
+
+set -ex
+mkdir -p $SOLANA_CONFIG_DIR
+rsync -vz "$leader"/config/leader.json $SOLANA_CONFIG_DIR/
+rsync -vz "$leader"/config/mint-demo.json $SOLANA_CONFIG_DIR/
+
+# shellcheck disable=SC2086 # $solana_drone should not be quoted
+exec $solana_drone \
+  -l $SOLANA_CONFIG_DIR/leader.json < $SOLANA_CONFIG_DIR/mint-demo.json