add some checks and error management

grafana-save-dashb.sh

@@ -7,13 +7,28 @@ GRAFANA_URL="https://grafana-test.psi.ch"
 EXPORT_DIR="./dashboards"
 # ---------------------
 
-mkdir -p "$EXPORT_DIR"
+if [ -z "$API_TOKEN" ];then
+    echo "ERROR: API_TOKEN environment variable is not set" >&2
+    exit 1
+fi
 
-echo "Starting export from $GRAFANA_URL..."
+echo "Reading dashboard information from: $GRAFANA_URL..."
 
 # Get list of dashboard UIDs
 dashboards=$(curl -s -H "Authorization: Bearer $API_TOKEN" \
                   "$GRAFANA_URL/api/search?type=dash-db")
+if [ $? -ne 0 ];then
+    echo "ERROR: curl call for reading dashboard list failed" >&2
+    exit 1
+fi
+status=$(echo "$dashboards" | jq '.statusCode')
+if [ -n "$status" ];then
+    echo "ERROR: curl call for reading dashboard list failed (Status: $status)" >&2
+    echo $dashboards
+    exit 2
+fi
+
+mkdir -p "$EXPORT_DIR"
 
 # Iterate over dashboards
 echo "$dashboards" | jq -c '.[]' | while read -r line; do