| 1 | import pytest |
| 2 | import os |
| 3 | import shutil |
| 4 | import signal |
| 5 | import subprocess |
| 6 | |
| 7 | import lttng_ivc.utils.ProjectFactory as ProjectFactory |
| 8 | import lttng_ivc.utils.utils as utils |
| 9 | import lttng_ivc.utils.runtime as Run |
| 10 | import lttng_ivc.settings as Settings |
| 11 | |
| 12 | """ |
| 13 | |
| 14 | FC: Fully Compatible |
| 15 | BC: Feature of the smallest version number will works. |
| 16 | EU: Event unavailable for tracing |
| 17 | |
| 18 | +-----------------------------------------+-----+------+------+-------+ |
| 19 | | LTTng UST tracepoint API/ABI: | |
| 20 | | Probe provider vs LTTng UST library | |
| 21 | +-----------------------------------------+-----+------+------+-------+ |
| 22 | | Probe Provider / LTTng UST | 2.7 | 2.8 | 2.9 | 2.10 | |
| 23 | +-----------------------------------------+-----+------+------+-------+ |
| 24 | | 2.7 | FC | BC | BC | BC | |
| 25 | | 2.8 | EU | FC | BC | BC | |
| 26 | | 2.9 | EU | EU | FC | BC | |
| 27 | | 2.10 | EU | EU | EU | FC | |
| 28 | +-----------------------------------------+-----+------+------+-------+ |
| 29 | |
| 30 | Using tracepoint.h as a reference for change between version. |
| 31 | |
| 32 | Compile application with version under test (Probe Provider) tracepoints but do not link with provider. |
| 33 | Build provider with version under test (Probe Provider) |
| 34 | Launch application with provider using ld_preload. |
| 35 | Validate that events are registered and present in trace. |
| 36 | """ |
| 37 | |
| 38 | """ |
| 39 | First tuple member: application lttng-ust version |
| 40 | Second tuple member: reference (lttng-ust,lttng-tools) version |
| 41 | Third tuple member: expected scenario |
| 42 | """ |
| 43 | |
| 44 | """ |
| 45 | We use lttng-tools instead of lttng-ust as second tuple since each |
| 46 | lttng-tools is locked with the corresponding lttng-ust we want to test given |
| 47 | that we use pre_cooked one. |
| 48 | """ |
| 49 | |
| 50 | fail_provider = "fail_on_provider" |
| 51 | fail_app = "fail_on_app" |
| 52 | success = "success" |
| 53 | |
| 54 | test_matrix_enum = [ |
| 55 | ("lttng-ust-2.7", "lttng-tools-2.7", fail_provider, 0), |
| 56 | ("lttng-ust-2.7", "lttng-tools-2.8", fail_provider, 0), |
| 57 | ("lttng-ust-2.7", "lttng-tools-2.9", fail_provider, 0), |
| 58 | ("lttng-ust-2.7", "lttng-tools-2.10", fail_provider, 0), |
| 59 | ("lttng-ust-2.8", "lttng-tools-2.7", success, 100), |
| 60 | ("lttng-ust-2.8", "lttng-tools-2.8", success, 200), |
| 61 | ("lttng-ust-2.8", "lttng-tools-2.9", success, 200), |
| 62 | ("lttng-ust-2.8", "lttng-tools-2.10", success, 200), |
| 63 | ("lttng-ust-2.9", "lttng-tools-2.7", success, 100), |
| 64 | ("lttng-ust-2.9", "lttng-tools-2.8", success, 200), |
| 65 | ("lttng-ust-2.9", "lttng-tools-2.9", success, 200), |
| 66 | ("lttng-ust-2.9", "lttng-tools-2.10", success, 200), |
| 67 | ("lttng-ust-2.10", "lttng-tools-2.7", success, 100), |
| 68 | ("lttng-ust-2.10", "lttng-tools-2.8", success, 200), |
| 69 | ("lttng-ust-2.10", "lttng-tools-2.9", success, 200), |
| 70 | ("lttng-ust-2.10", "lttng-tools-2.10", success, 200), |
| 71 | ] |
| 72 | |
| 73 | test_matrix_base = [ |
| 74 | ("lttng-ust-2.7", "lttng-tools-2.7", success), |
| 75 | ("lttng-ust-2.7", "lttng-tools-2.8", success), |
| 76 | ("lttng-ust-2.7", "lttng-tools-2.9", success), |
| 77 | ("lttng-ust-2.7", "lttng-tools-2.10", success), |
| 78 | ("lttng-ust-2.8", "lttng-tools-2.7", success), |
| 79 | ("lttng-ust-2.8", "lttng-tools-2.8", success), |
| 80 | ("lttng-ust-2.8", "lttng-tools-2.9", success), |
| 81 | ("lttng-ust-2.8", "lttng-tools-2.10", success), |
| 82 | ("lttng-ust-2.9", "lttng-tools-2.7", success), |
| 83 | ("lttng-ust-2.9", "lttng-tools-2.8", success), |
| 84 | ("lttng-ust-2.9", "lttng-tools-2.9", success), |
| 85 | ("lttng-ust-2.9", "lttng-tools-2.10", success), |
| 86 | ("lttng-ust-2.10", "lttng-tools-2.7", success), |
| 87 | ("lttng-ust-2.10", "lttng-tools-2.8", success), |
| 88 | ("lttng-ust-2.10", "lttng-tools-2.9", success), |
| 89 | ("lttng-ust-2.10", "lttng-tools-2.10", success), |
| 90 | ] |
| 91 | |
| 92 | runtime_matrix_enum = [] |
| 93 | runtime_matrix_base = [] |
| 94 | |
| 95 | if not Settings.test_only: |
| 96 | runtime_matrix_enum = test_matrix_enum |
| 97 | runtime_matrix_base = test_matrix_base |
| 98 | else: |
| 99 | for tup in test_matrix_enum: |
| 100 | if (tup[0] in Settings.test_only or tup[1] in |
| 101 | Settings.test_only): |
| 102 | runtime_matrix_enum.append(tup) |
| 103 | for tup in test_matrix_base: |
| 104 | if (tup[0] in Settings.test_only or tup[1] in |
| 105 | Settings.test_only): |
| 106 | runtime_matrix_base.append(tup) |
| 107 | |
| 108 | @pytest.mark.parametrize("ust_label,tools_label,scenario, expected_event", runtime_matrix_enum) |
| 109 | def test_ust_tracepoint_abi_api_vs_ust_enum(tmpdir, ust_label, tools_label, scenario, expected_event): |
| 110 | |
| 111 | nb_loop = 100 |
| 112 | nb_expected_events = expected_event |
| 113 | |
| 114 | # Prepare environment |
| 115 | ust = ProjectFactory.get_precook(ust_label) |
| 116 | tools = ProjectFactory.get_precook(tools_label) |
| 117 | babeltrace = ProjectFactory.get_precook(Settings.default_babeltrace) |
| 118 | |
| 119 | tools_runtime_path = os.path.join(str(tmpdir), "tools") |
| 120 | ust_runtime_path = os.path.join(str(tmpdir), "ust") |
| 121 | app_path = os.path.join(str(tmpdir), "app") |
| 122 | |
| 123 | with Run.get_runtime(ust_runtime_path) as runtime_ust, Run.get_runtime(tools_runtime_path) as runtime_tools: |
| 124 | runtime_tools.add_project(tools) |
| 125 | runtime_tools.add_project(babeltrace) |
| 126 | |
| 127 | runtime_ust.add_project(ust) |
| 128 | runtime_ust.lttng_home = runtime_tools.lttng_home |
| 129 | |
| 130 | trace_path = os.path.join(runtime_tools.lttng_home, 'trace') |
| 131 | |
| 132 | # Make application using the ust runtime |
| 133 | shutil.copytree(Settings.apps_preload_provider_folder, app_path) |
| 134 | |
| 135 | # Use the testing env to make the probe |
| 136 | if scenario == fail_provider: |
| 137 | with pytest.raises(subprocess.CalledProcessError): |
| 138 | runtime_ust.run("make provider-enum", cwd=app_path) |
| 139 | return |
| 140 | else: |
| 141 | runtime_ust.run("make provider-enum", cwd=app_path) |
| 142 | |
| 143 | # Use the ust env to test tracepoint instrumentation |
| 144 | if scenario == fail_app: |
| 145 | with pytest.raises(subprocess.CalledProcessError): |
| 146 | runtime_tools.run("make app-enum", cwd=app_path) |
| 147 | return |
| 148 | else: |
| 149 | runtime_ust.run("make app-enum", cwd=app_path) |
| 150 | |
| 151 | # Start lttng-sessiond |
| 152 | sessiond = utils.sessiond_spawn(runtime_tools) |
| 153 | |
| 154 | # Create session using mi to get path and session name |
| 155 | runtime_tools.run('lttng create trace --output={}'.format(trace_path)) |
| 156 | |
| 157 | runtime_tools.run('lttng enable-event -u tp:tptest,tp:tpenum') |
| 158 | runtime_tools.run('lttng start') |
| 159 | |
| 160 | # Run application |
| 161 | cmd = './app-enum {}'.format(nb_loop) |
| 162 | runtime_tools.run(cmd, cwd=app_path, ld_preload="./libtp-enum.so") |
| 163 | |
| 164 | # Stop tracing |
| 165 | runtime_tools.run('lttng destroy -a') |
| 166 | runtime_tools.subprocess_terminate(sessiond) |
| 167 | |
| 168 | |
| 169 | # Read trace with babeltrace and check for event count via number of line |
| 170 | cmd = 'babeltrace {}'.format(trace_path) |
| 171 | cp_process, cp_out, cp_err = runtime_tools.run(cmd) |
| 172 | assert(utils.line_count(cp_out) == nb_expected_events) |
| 173 | |
| 174 | @pytest.mark.parametrize("ust_label,tools_label,scenario", runtime_matrix_base) |
| 175 | def test_ust_tracepoint_probe_abi_api_vs_ust_base(tmpdir, ust_label, tools_label, scenario): |
| 176 | |
| 177 | nb_loop = 100 |
| 178 | nb_expected_events = 200 |
| 179 | |
| 180 | # Prepare environment |
| 181 | ust = ProjectFactory.get_precook(ust_label) |
| 182 | tools = ProjectFactory.get_precook(tools_label) |
| 183 | babeltrace = ProjectFactory.get_precook(Settings.default_babeltrace) |
| 184 | |
| 185 | tools_runtime_path = os.path.join(str(tmpdir), "tools") |
| 186 | ust_runtime_path = os.path.join(str(tmpdir), "ust") |
| 187 | app_path = os.path.join(str(tmpdir), "app") |
| 188 | |
| 189 | with Run.get_runtime(ust_runtime_path) as runtime_ust, Run.get_runtime(tools_runtime_path) as runtime_tools: |
| 190 | runtime_tools.add_project(tools) |
| 191 | runtime_tools.add_project(babeltrace) |
| 192 | |
| 193 | runtime_ust.add_project(ust) |
| 194 | runtime_ust.lttng_home = runtime_tools.lttng_home |
| 195 | |
| 196 | trace_path = os.path.join(runtime_tools.lttng_home, 'trace') |
| 197 | |
| 198 | # Make application using the ust runtime |
| 199 | shutil.copytree(Settings.apps_preload_provider_folder, app_path) |
| 200 | |
| 201 | # Use the testing env to make the probe |
| 202 | runtime_ust.run("make provider", cwd=app_path) |
| 203 | |
| 204 | # Use the ust env to test tracepoint instrumentation |
| 205 | runtime_ust.run("make app", cwd=app_path) |
| 206 | |
| 207 | # Start lttng-sessiond |
| 208 | sessiond = utils.sessiond_spawn(runtime_tools) |
| 209 | |
| 210 | # Create session using mi to get path and session name |
| 211 | runtime_tools.run('lttng create trace --output={}'.format(trace_path)) |
| 212 | |
| 213 | runtime_tools.run('lttng enable-event -u tp:tptest,tp:tpenum') |
| 214 | runtime_tools.run('lttng start') |
| 215 | |
| 216 | # Run application |
| 217 | cmd = './app {}'.format(nb_loop) |
| 218 | runtime_tools.run(cmd, cwd=app_path, ld_preload="./libtp.so") |
| 219 | |
| 220 | # Stop tracing |
| 221 | runtime_tools.run('lttng destroy -a') |
| 222 | runtime_tools.subprocess_terminate(sessiond) |
| 223 | |
| 224 | |
| 225 | # Read trace with babeltrace and check for event count via number of line |
| 226 | cmd = 'babeltrace {}'.format(trace_path) |
| 227 | cp_process, cp_out, cp_err = runtime_tools.run(cmd) |
| 228 | assert(utils.line_count(cp_out) == nb_expected_events) |