1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
package internal
import (
"testing"
"ior/internal/event"
"ior/internal/file"
"ior/internal/globalfilter"
"ior/internal/types"
)
func TestHandleTracepointExitDispatchesViaRuntimeKindRegistry(t *testing.T) {
el := mustNewEventLoop(t, eventLoopConfig{})
called := false
el.exitHandlers = map[types.EventType]runtimeExitHandler{
types.ENTER_FD_EVENT: func(_ *eventLoop, ep *event.Pair) bool {
called = true
ep.Comm = "registry"
return true
},
}
ep := &event.Pair{
EnterEv: &types.FdEvent{EventType: types.ENTER_FD_EVENT, TraceId: types.SYS_ENTER_READ, Tid: defaultTid},
ExitEv: &types.RetEvent{TraceId: types.SYS_EXIT_READ, Tid: defaultTid},
}
if ok := el.handleTracepointExit(ep); !ok {
t.Fatal("handleTracepointExit returned false")
}
if !called {
t.Fatal("registered runtime kind handler was not called")
}
if ep.Comm != "registry" {
t.Fatalf("ep.Comm = %q, want registry", ep.Comm)
}
}
func TestHandleTracepointExitRejectsMismatchedRuntimeKind(t *testing.T) {
el := mustNewEventLoop(t, eventLoopConfig{})
warnings := make(chan string, 1)
el.warningCb = func(message string) { warnings <- message }
ep := &event.Pair{
EnterEv: &types.NullEvent{EventType: types.ENTER_FD_EVENT, TraceId: types.SYS_ENTER_READ, Tid: defaultTid},
ExitEv: &types.RetEvent{TraceId: types.SYS_EXIT_READ, Tid: defaultTid},
}
if ok := el.handleTracepointExit(ep); ok {
t.Fatal("expected mismatched runtime kind to be rejected")
}
select {
case msg := <-warnings:
if msg != "Dropped malformed enter event" {
t.Fatalf("unexpected warning %q", msg)
}
default:
t.Fatal("expected warning for mismatched runtime kind")
}
}
func TestTracepointExitedFinalizesRuntimeKindPair(t *testing.T) {
el := mustNewEventLoop(t, eventLoopConfig{})
fd := int32(42)
tracked := file.NewFd(fd, "/tmp/read-source", 0)
el.fdState().set(fd, tracked)
enter := &types.FdEvent{
EventType: types.ENTER_FD_EVENT,
TraceId: types.SYS_ENTER_READ,
Time: 1000,
Pid: defaultPid,
Tid: defaultTid,
Fd: fd,
}
exit := &types.RetEvent{
EventType: types.EXIT_RET_EVENT,
TraceId: types.SYS_EXIT_READ,
Time: 1256,
Pid: defaultPid,
Tid: defaultTid,
Ret: 128,
RetType: types.READ_CLASSIFIED,
}
el.tracepointEntered(enter)
out := make(chan *event.Pair, 1)
el.tracepointExited(exit, out)
select {
case ep := <-out:
if ep.Bytes != 128 {
t.Fatalf("ep.Bytes = %d, want 128", ep.Bytes)
}
if ep.Duration != 256 {
t.Fatalf("ep.Duration = %d, want 256", ep.Duration)
}
if ep.File == tracked {
t.Fatal("expected emitted fd file to be frozen as a duplicate")
}
if got := ep.FileName(); got != "/tmp/read-source" {
t.Fatalf("ep.FileName() = %q, want /tmp/read-source", got)
}
default:
t.Fatal("expected finalized pair to be emitted")
}
}
func TestRawRuntimeEventHandlerAppliesEnterFilter(t *testing.T) {
el := mustNewEventLoop(t, eventLoopConfig{
filter: globalfilter.Filter{
File: &globalfilter.StringFilter{Pattern: "keep"},
},
})
_, raw := makeEnterPathEvent(t, defaulTime, defaultPid, defaultTid, "/tmp/drop", types.SYS_ENTER_NEWSTAT)
el.processRawEvent(raw, make(chan *event.Pair, 1))
if _, ok := el.pairs.enters[defaultTid]; ok {
t.Fatalf("path enter event should have been rejected by the raw enter filter")
}
}
func TestRuntimeEventKindRegistriesHaveUniqueCoverage(t *testing.T) {
exitHandlers := make(map[types.EventType]struct{})
for _, kind := range runtimeEventKinds() {
if _, exists := exitHandlers[kind.enterEventType]; exists {
t.Fatalf("duplicate runtime event kind for %v", kind.enterEventType)
}
exitHandlers[kind.enterEventType] = struct{}{}
if kind.exit == nil {
t.Fatalf("nil runtime exit handler for %v", kind.enterEventType)
}
}
rawHandlers := make(map[types.EventType]rawEventDirection)
for _, rawEvent := range rawRuntimeEvents() {
if _, exists := rawHandlers[rawEvent.eventType]; exists {
t.Fatalf("duplicate raw runtime event for %v", rawEvent.eventType)
}
rawHandlers[rawEvent.eventType] = rawEvent.direction
if rawEvent.decode == nil {
t.Fatalf("nil raw decoder for %v", rawEvent.eventType)
}
if rawEvent.direction == rawEnterEvent {
if _, exists := exitHandlers[rawEvent.eventType]; !exists {
t.Fatalf("enter raw event %v has no runtime exit handler", rawEvent.eventType)
}
}
}
for enterEventType := range exitHandlers {
if direction, exists := rawHandlers[enterEventType]; !exists || direction != rawEnterEvent {
t.Fatalf("runtime event kind %v has no enter raw handler", enterEventType)
}
}
}
|
