[taler-sandcastle-ng] branch master updated: move exchange master key dir to a separate volume

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devan-carpenter pushed a commit to branch master
in repository sandcastle-ng.

The following commit(s) were added to refs/heads/master by this push:
     new 3ae088a  move exchange master key dir to a separate volume
3ae088a is described below

commit 3ae088af4b138878c97aa1295826c322daccf9c9
Author: Devan Carpenter <devan@taler.net>
AuthorDate: Thu Jun 27 18:19:52 2024 -0400

    move exchange master key dir to a separate volume
    
    we want to be able to destroy the main data volume while keeping the
    master key around.
    
    this attempts to migrate the key to the new volume if it already exists
    is the main data volume
    
    resolves mantis bug #8293
---
 sandcastle-run                   |  1 +
 scripts/demo/setup-sandcastle.sh | 21 +++++++++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/sandcastle-run b/sandcastle-run
index 83d7123..cc1f155 100755
--- a/sandcastle-run
+++ b/sandcastle-run
@@ -58,6 +58,7 @@ exec podman run \
   --name taler-sandcastle \
   --systemd=always \
   -v talerdata:/talerdata:Z \
+  -v talerdata_persistent:/talerdata_persistent:Z \
   $OVERRIDES \
   -v $PWD/scripts:/scripts:Z \
   -v $PWD/scripts/$SETUP_NAME:/provision:Z \
diff --git a/scripts/demo/setup-sandcastle.sh b/scripts/demo/setup-sandcastle.sh
index ca3a3f6..d10fb0a 100755
--- a/scripts/demo/setup-sandcastle.sh
+++ b/scripts/demo/setup-sandcastle.sh
@@ -94,10 +94,31 @@ function lift_dir() {
   fi
 }
 
+function persist_exchange_key() {
+  src=$1
+  target=$2
+  if [[ -L "$src" ]]; then
+    # be idempotent
+    echo "$src is already a symlink"
+  elif [[ -d /talerdata_persistent/$target ]]; then
+    echo "symlinking existing /talerdata_persistent/$target"
+    rm -rf "$src"
+    ln -s "/talerdata_persistent/$target" "$src"
+    # if the directory is empty then we want to attempt to
+    # move the keys over from the main data dir.
+    # we check for an empty dir using "ls -A"
+  elif [[ -z "$(ls -A /talerdata_persistent/$target)" ]]; then
+    echo "symlinking new /talerdata_persistent/$target"
+    mv "/talerdata/var-lib-taler/$target" "/talerdata_persistent/"
+    ln -s "/talerdata_persistent/$target" "$src"
+  fi
+}
+
 lift_dir /var/lib/taler var-lib-taler
 lift_dir /etc/taler etc-taler
 lift_dir /etc/libeufin etc-libeufin
 lift_dir /var/lib/postgresql var-lib-postgresql
+persist_exchange_key /var/lib/taler/exchange-offline exchange-offline
 
 # Caddy configuration.
 # We use the caddy reverse proxy with automatic

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