fns: bash (zsh) sourceable helper fns

Author: johnalotoski

scripts/bash-fns.sh

@@ -0,0 +1,36 @@
+# shellcheck disable=SC2148
+#
+# Various bash helper functions live here.
+
+
+# This can be used to simplify ssh sessions, rsync, ex:
+#   ssh -o "$(ssm-proxy-cmd "$REGION")" "$INSTANCE_ID"
+ssm-proxy-cmd() {
+  echo "ProxyCommand=sh -c 'aws --region $1 ssm start-session --target %h --document-name AWS-StartSSHSession --parameters portNumber=%p'"
+}
+
+
+# A handy transaction submission function with mempool monitoring.
+# CARDANO_NODE_{NETWORK_ID,SOCKET_PATH}, TESTNET_MAGIC should already be exported.
+submit() (
+  set -euo pipefail
+  TX_SIGNED="$1"
+
+  TXID=$(cardano-cli latest transaction txid --tx-file "$TX_SIGNED")
+
+  echo "Submitting $TX_SIGNED with txid $TXID..."
+  cardano-cli latest transaction submit --tx-file "$TX_SIGNED"
+
+  EXISTS="true"
+  while [ "$EXISTS" = "true" ]; do
+    EXISTS=$(cardano-cli latest query tx-mempool tx-exists "$TXID" | jq -r .exists)
+    if [ "$EXISTS" = "true" ]; then
+      echo "The transaction still exists in the mempool, sleeping 5s: $TXID"
+    else
+      echo "The transaction has been removed from the mempool."
+    fi
+    sleep 5
+  done
+  echo "Transaction $TX_SIGNED with txid $TXID submitted successfully."
+  echo
+)