Script to setup, start and destroy a live session

Signed-off-by: Julien Desfossez <jdesfossez@efficios.com>

diff --git a/utils/lttngtop-live-simple.sh b/utils/lttngtop-live-simple.sh
new file mode 100755 (executable)
index 0000000..652ae7a
--- /dev/null
+++ b/utils/lttngtop-live-simple.sh
@@ -0,0 +1,69 @@
+#!/bin/bash
+
+# Setup a live LTTng session on localhost
+
+SESSION_NAME="lttngtop-live-simple"
+DEBUG=">/dev/null"
+
+pgrep -u root lttng-sessiond >/dev/null
+if test $? != 0; then
+       echo "Starting lttng-sessiond as root (trying sudo, start manually if \
+it fails)"
+       sudo lttng-sessiond -d
+       if test $? != 0; then
+               exit 1
+       fi
+fi
+
+pgrep lttng-relayd >/dev/null
+if test $? != 0; then
+       echo "Starting lttng-relayd as your current user, start manually if \
+it fails"
+       lttng-relayd -d
+       if test $? != 0; then
+               exit 1
+       fi
+fi
+
+SUDO=""
+groups|grep tracing >/dev/null
+if test $? != 0; then
+       echo "You are not a member of the tracing group, so you need root \
+access, the script will try with sudo"
+       SUDO="sudo"
+fi
+
+# check if lttng command if in the path
+# check if the user can execute the command (with sudo if not in tracing group)
+# check if lttng-modules is installed
+$SUDO lttng list -k | grep sched_switch >/dev/null
+if test $? != 0; then
+       echo "Something went wrong executing \"$SUDO lttng list -k | grep sched_switch\", \
+try to fix the problem manually and then start the script again"
+fi
+
+lttng create $SESSION_NAME --live 1000000 -U net://localhost >/dev/null
+[[ $? != 0 ]] && exit 2
+lttng enable-event -s $SESSION_NAME -k lttng_statedump_start,lttng_statedump_end,lttng_statedump_process_state,lttng_statedump_file_descriptor,lttng_statedump_vm_map,lttng_statedump_network_interface,lttng_statedump_interrupt,sched_process_free,sched_switch >/dev/null
+[[ $? != 0 ]] && exit 2
+lttng enable-event -s $SESSION_NAME -k --syscall -a >/dev/null
+[[ $? != 0 ]] && exit 2
+lttng add-context -s $SESSION_NAME -k -t pid -t procname -t tid -t ppid -t perf:cache-misses -t perf:major-faults -t perf:branch-load-misses >/dev/null
+[[ $? != 0 ]] && exit 2
+lttng start $SESSION_NAME >/dev/null
+[[ $? != 0 ]] && exit 2
+
+s=$(lttngtop -r net://localhost | grep $SESSION_NAME)
+if test $? != 0; then
+       echo "Problem executing lttngtop -r net://localhost | grep $SESSION_NAME"
+       exit 1
+fi
+
+lttngtop -r $(echo $s|cut -d' ' -f1)
+
+lttng destroy $SESSION_NAME >/dev/null
+echo -n "Destroy $HOME/lttng-traces/$HOSTNAME/${SESSION_NAME}* (Y/n) ? "
+read a
+if test $a = 'y' -o $a = 'Y'; then
+       rm -rf $HOME/lttng-traces/$HOSTNAME/${SESSION_NAME}*
+fi