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87db61a436
Add a new "discard" event type for trace2 event destinations. When the trace2 file count check creates a sentinel file, it will include the normal trace2 output in the sentinel, along with this new discard event. Writing this message into the sentinel file is useful for tracking how often the file count check triggers in practice. Bump up the event format version since we've added a new event type. Signed-off-by: Josh Steadmon <steadmon@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
287 lines
7.2 KiB
Bash
Executable file
287 lines
7.2 KiB
Bash
Executable file
#!/bin/sh
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test_description='test trace2 facility'
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. ./test-lib.sh
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# Turn off any inherited trace2 settings for this test.
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sane_unset GIT_TRACE2 GIT_TRACE2_PERF GIT_TRACE2_EVENT
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sane_unset GIT_TRACE2_BARE
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sane_unset GIT_TRACE2_CONFIG_PARAMS
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perl -MJSON::PP -e 0 >/dev/null 2>&1 && test_set_prereq JSON_PP
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# Add t/helper directory to PATH so that we can use a relative
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# path to run nested instances of test-tool.exe (see 004child).
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# This helps with HEREDOC comparisons later.
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TTDIR="$GIT_BUILD_DIR/t/helper/" && export TTDIR
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PATH="$TTDIR:$PATH" && export PATH
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# Warning: use of 'test_cmp' may run test-tool.exe and/or git.exe
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# Warning: to do the actual diff/comparison, so the HEREDOCs here
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# Warning: only cover our actual calls to test-tool and/or git.
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# Warning: So you may see extra lines in artifact files when
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# Warning: interactively debugging.
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V=$(git version | sed -e 's/^git version //') && export V
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# There are multiple trace2 targets: normal, perf, and event.
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# Trace2 events will/can be written to each active target (subject
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# to whatever filtering that target decides to do).
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# Test each target independently.
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#
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# Defer setting GIT_TRACE2_PERF until the actual command we want to
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# test because hidden git and test-tool commands in the test
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# harness can contaminate our output.
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# We don't bother repeating the 001return and 002exit tests, since they
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# have coverage in the normal and perf targets.
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# Verb 003error
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#
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# To the above, add multiple 'error <msg>' events
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test_expect_success JSON_PP 'event stream, error event' '
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test_when_finished "rm trace.event actual expect" &&
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GIT_TRACE2_EVENT="$(pwd)/trace.event" test-tool trace2 003error "hello world" "this is a test" &&
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perl "$TEST_DIRECTORY/t0212/parse_events.perl" <trace.event >actual &&
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sed -e "s/^|//" >expect <<-EOF &&
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|VAR1 = {
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| "_SID0_":{
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| "argv":[
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| "_EXE_",
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| "trace2",
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| "003error",
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| "hello world",
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| "this is a test"
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| ],
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| "errors":[
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| "%s",
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| "%s"
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| ],
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| "exit_code":0,
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| "hierarchy":"trace2",
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| "name":"trace2",
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| "version":"$V"
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| }
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|};
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EOF
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test_cmp expect actual
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'
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# Verb 004child
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#
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# Test nested spawning of child processes.
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#
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# Conceptually, this looks like:
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# P1: TT trace2 004child
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# P2: |--- TT trace2 004child
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# P3: |--- TT trace2 001return 0
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test_expect_success JSON_PP 'event stream, return code 0' '
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test_when_finished "rm trace.event actual expect" &&
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GIT_TRACE2_EVENT="$(pwd)/trace.event" test-tool trace2 004child test-tool trace2 004child test-tool trace2 001return 0 &&
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perl "$TEST_DIRECTORY/t0212/parse_events.perl" <trace.event >actual &&
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sed -e "s/^|//" >expect <<-EOF &&
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|VAR1 = {
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| "_SID0_":{
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| "argv":[
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| "_EXE_",
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| "trace2",
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| "004child",
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| "test-tool",
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| "trace2",
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| "004child",
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| "test-tool",
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| "trace2",
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| "001return",
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| "0"
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| ],
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| "child":{
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| "0":{
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| "child_argv":[
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| "_EXE_",
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| "trace2",
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| "004child",
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| "test-tool",
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| "trace2",
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| "001return",
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| "0"
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| ],
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| "child_class":"?",
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| "child_code":0,
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| "use_shell":0
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| }
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| },
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| "exit_code":0,
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| "hierarchy":"trace2",
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| "name":"trace2",
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| "version":"$V"
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| },
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| "_SID0_/_SID1_":{
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| "argv":[
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| "_EXE_",
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| "trace2",
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| "004child",
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| "test-tool",
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| "trace2",
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| "001return",
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| "0"
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| ],
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| "child":{
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| "0":{
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| "child_argv":[
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| "_EXE_",
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| "trace2",
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| "001return",
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| "0"
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| ],
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| "child_class":"?",
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| "child_code":0,
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| "use_shell":0
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| }
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| },
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| "exit_code":0,
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| "hierarchy":"trace2/trace2",
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| "name":"trace2",
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| "version":"$V"
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| },
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| "_SID0_/_SID1_/_SID2_":{
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| "argv":[
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| "_EXE_",
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| "trace2",
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| "001return",
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| "0"
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| ],
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| "exit_code":0,
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| "hierarchy":"trace2/trace2/trace2",
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| "name":"trace2",
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| "version":"$V"
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| }
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|};
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EOF
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test_cmp expect actual
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'
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# Test listing of all "interesting" config settings.
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test_expect_success JSON_PP 'event stream, list config' '
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test_when_finished "rm trace.event actual expect" &&
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git config --local t0212.abc 1 &&
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git config --local t0212.def "hello world" &&
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GIT_TRACE2_EVENT="$(pwd)/trace.event" GIT_TRACE2_CONFIG_PARAMS="t0212.*" test-tool trace2 001return 0 &&
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perl "$TEST_DIRECTORY/t0212/parse_events.perl" <trace.event >actual &&
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sed -e "s/^|//" >expect <<-EOF &&
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|VAR1 = {
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| "_SID0_":{
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| "argv":[
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| "_EXE_",
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| "trace2",
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| "001return",
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| "0"
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| ],
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| "exit_code":0,
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| "hierarchy":"trace2",
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| "name":"trace2",
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| "params":[
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| {
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| "param":"t0212.abc",
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| "value":"1"
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| },
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| {
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| "param":"t0212.def",
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| "value":"hello world"
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| }
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| ],
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| "version":"$V"
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| }
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|};
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EOF
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test_cmp expect actual
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'
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test_expect_success JSON_PP 'basic trace2_data' '
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test_when_finished "rm trace.event actual expect" &&
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GIT_TRACE2_EVENT="$(pwd)/trace.event" test-tool trace2 006data test_category k1 v1 test_category k2 v2 &&
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perl "$TEST_DIRECTORY/t0212/parse_events.perl" <trace.event >actual &&
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sed -e "s/^|//" >expect <<-EOF &&
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|VAR1 = {
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| "_SID0_":{
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| "argv":[
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| "_EXE_",
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| "trace2",
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| "006data",
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| "test_category",
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| "k1",
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| "v1",
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| "test_category",
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| "k2",
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| "v2"
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| ],
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| "data":{
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| "test_category":{
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| "k1":"v1",
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| "k2":"v2"
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| }
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| },
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| "exit_code":0,
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| "hierarchy":"trace2",
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| "name":"trace2",
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| "version":"$V"
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| }
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|};
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EOF
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test_cmp expect actual
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'
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# Now test without environment variables and get all Trace2 settings
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# from the global config.
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test_expect_success JSON_PP 'using global config, event stream, error event' '
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test_when_finished "rm trace.event actual expect" &&
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test_config_global trace2.eventTarget "$(pwd)/trace.event" &&
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test-tool trace2 003error "hello world" "this is a test" &&
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perl "$TEST_DIRECTORY/t0212/parse_events.perl" <trace.event >actual &&
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sed -e "s/^|//" >expect <<-EOF &&
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|VAR1 = {
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| "_SID0_":{
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| "argv":[
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| "_EXE_",
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| "trace2",
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| "003error",
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| "hello world",
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| "this is a test"
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| ],
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| "errors":[
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| "%s",
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| "%s"
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| ],
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| "exit_code":0,
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| "hierarchy":"trace2",
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| "name":"trace2",
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| "version":"$V"
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| }
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|};
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EOF
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test_cmp expect actual
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'
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test_expect_success 'discard traces when there are too many files' '
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mkdir trace_target_dir &&
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test_when_finished "rm -r trace_target_dir" &&
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(
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GIT_TRACE2_MAX_FILES=5 &&
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export GIT_TRACE2_MAX_FILES &&
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cd trace_target_dir &&
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test_seq $GIT_TRACE2_MAX_FILES >../expected_filenames.txt &&
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xargs touch <../expected_filenames.txt &&
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cd .. &&
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GIT_TRACE2_EVENT="$(pwd)/trace_target_dir" test-tool trace2 001return 0
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) &&
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echo git-trace2-discard >>expected_filenames.txt &&
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ls trace_target_dir >ls_output.txt &&
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test_cmp expected_filenames.txt ls_output.txt &&
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head -n1 trace_target_dir/git-trace2-discard | grep \"event\":\"version\" &&
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head -n2 trace_target_dir/git-trace2-discard | tail -n1 | grep \"event\":\"too_many_files\"
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'
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test_done
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