+function validate_directory_empty ()
+{
+ local trace_path=$1
+
+ ls -A $local_path > /dev/null 2>&1
+ if [ $? -eq 0 ]; then
+ pass "Directory empty"
+ else
+ fail "Directory empty"
+ fi
+}
+
+function wait_live_trace_ready ()
+{
+ local url=$1
+ local zero_client_match=0
+
+ diag "Waiting for live trace at url: $url"
+ while [ $zero_client_match -eq 0 ]; do
+ zero_client_match=$($BABELTRACE_BIN -i lttng-live $url | grep "0 client(s) connected" | wc -l)
+ sleep 0.5
+ done
+ pass "Waiting for live trace at url: $url"
+}
+
+function wait_live_viewer_connect ()
+{
+ local url=$1
+ local one_client_match=0
+
+ diag "Waiting for live viewers on url: $url"
+ while [ $one_client_match -eq 0 ]; do
+ one_client_match=$($BABELTRACE_BIN -i lttng-live $url | grep "1 client(s) connected" | wc -l)
+ sleep 0.5
+ done
+ pass "Waiting for live viewers on url: $url"
+}
+
+function validate_metadata_event ()
+{
+ local event_name=$1
+ local nr_event_id=$2
+ local trace_path=$3
+
+ local metadata_file=$(find $trace_path | grep metadata)
+ local metadata_path=$(dirname $metadata_file)
+
+ which $BABELTRACE_BIN >/dev/null
+ skip $? -ne 0 "Babeltrace binary not found. Skipping trace matches"
+
+ local count=$($BABELTRACE_BIN --output-format=ctf-metadata $metadata_path | grep $event_name | wc -l)
+
+ if [ "$count" -ne "$nr_event_id" ]; then
+ fail "Metadata match with the metadata of $count event(s) named $event_name"
+ diag "$count matching event id found in metadata"
+ else
+ pass "Metadata match with the metadata of $count event(s) named $event_name"
+ fi
+
+}
+