tests: truncate metadata file for regenerate metadata test
[lttng-tools.git] / tests / regression / tools / regen-metadata / test_kernel
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1#!/bin/bash
2#
9d16b343 3# Copyright (C) 2015 Julien Desfossez <jdesfossez@efficios.com>
801236b0 4#
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5# SPDX-License-Identifier: LGPL-2.1-only
6
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7TEST_DESC="Streaming - Kernel tracing"
8
9CURDIR=$(dirname $0)/
10TESTDIR=$CURDIR/../../..
11EVENT_NAME="lttng_test_filter_event"
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12SESSION_NAME=""
13
14TRACE_PATH=$(mktemp -d)
15
dbbc5b0a 16NUM_TESTS=24
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17
18source $TESTDIR/utils/utils.sh
19
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20function test_kernel_streaming ()
21{
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22 local metadata_path
23
801236b0 24 diag "Test kernel streaming with metadata regeneration"
f0d43d3d 25 create_lttng_session_uri $SESSION_NAME net://localhost
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26 lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME
27 start_lttng_tracing_ok $SESSION_NAME
28 echo -n "100" > /proc/lttng-test-filter-event
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29
30 # Baseline
31 stop_lttng_tracing_ok $SESSION_NAME
32 validate_trace $EVENT_NAME $TRACE_PATH/$HOSTNAME/$SESSION_NAME*
33
34 # Find the metadata file
35 metadata_path=$(find "$TRACE_PATH/$HOSTNAME/$SESSION_NAME"* | grep metadata)
36
37 # Empty the metadata file
38 echo -n > "$metadata_path"
39
40 start_lttng_tracing_ok $SESSION_NAME
eded6438 41 regenerate_metadata_ok $SESSION_NAME
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42 stop_lttng_tracing_ok $SESSION_NAME
43 # Validate test
44 validate_trace $EVENT_NAME $TRACE_PATH/$HOSTNAME/$SESSION_NAME*
801236b0 45 destroy_lttng_session_ok $SESSION_NAME
dbbc5b0a 46 rm -rf "$TRACE_PATH"
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47}
48
49function test_kernel_local ()
50{
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51 local metadata_path
52
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53 diag "Test kernel local with metadata regeneration"
54 create_lttng_session_ok $SESSION_NAME $TRACE_PATH
55 lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME
56 start_lttng_tracing_ok $SESSION_NAME
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57
58 # Baseline
801236b0 59 echo -n "100" > /proc/lttng-test-filter-event
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60 stop_lttng_tracing_ok $SESSION_NAME
61 validate_trace $EVENT_NAME "$TRACE_PATH"
62
63 # Find the metadata file
64 metadata_path=$(find "$TRACE_PATH"* | grep metadata)
65
66 # Empty the metadata file
67 echo -n > "$metadata_path"
68
69 start_lttng_tracing_ok $SESSION_NAME
eded6438 70 regenerate_metadata_ok $SESSION_NAME
801236b0 71 stop_lttng_tracing_ok $SESSION_NAME
dbbc5b0a 72
801236b0 73 validate_trace $EVENT_NAME $TRACE_PATH
801236b0 74 destroy_lttng_session_ok $SESSION_NAME
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75
76 rm -rf "$TRACE_PATH"
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77}
78
79plan_tests $NUM_TESTS
80
81print_test_banner "$TEST_DESC"
82
83if [ "$(id -u)" == "0" ]; then
84 isroot=1
85else
86 isroot=0
87fi
88
89skip $isroot "Root access is needed. Skipping all kernel streaming tests." $NUM_TESTS ||
90{
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91 validate_lttng_modules_present
92
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93 start_lttng_relayd "-o $TRACE_PATH"
94 start_lttng_sessiond
95 modprobe lttng-test
96
97 tests=( test_kernel_streaming test_kernel_local )
98
99 for fct_test in ${tests[@]};
100 do
101 SESSION_NAME=$(randstring 16 0)
102 ${fct_test}
103 done
104
105 rmmod lttng-test
106 stop_lttng_sessiond
107 stop_lttng_relayd
108}
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