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
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
|
package libpod
import (
"context"
"fmt"
"sync"
"github.com/containers/podman/v4/libpod/events"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
)
// newEventer returns an eventer that can be used to read/write events
func (r *Runtime) newEventer() (events.Eventer, error) {
options := events.EventerOptions{
EventerType: r.config.Engine.EventsLogger,
LogFilePath: r.config.Engine.EventsLogFilePath,
LogFileMaxSize: r.config.Engine.EventsLogMaxSize(),
}
return events.NewEventer(options)
}
// newContainerEvent creates a new event based on a container
func (c *Container) newContainerEvent(status events.Status) {
e := events.NewEvent(status)
e.ID = c.ID()
e.Name = c.Name()
e.Image = c.config.RootfsImageName
e.Type = events.Container
e.Details = events.Details{
ID: e.ID,
Attributes: c.Labels(),
}
// if the current event is a HealthStatus event, we need to get the current
// status of the container to pass to the event
if status == events.HealthStatus {
containerHealthStatus, err := c.healthCheckStatus()
if err != nil {
e.HealthStatus = fmt.Sprintf("%v", err)
}
e.HealthStatus = containerHealthStatus
}
if err := c.runtime.eventer.Write(e); err != nil {
logrus.Errorf("Unable to write pod event: %q", err)
}
}
// newContainerExitedEvent creates a new event for a container's death
func (c *Container) newContainerExitedEvent(exitCode int32) {
e := events.NewEvent(events.Exited)
e.ID = c.ID()
e.Name = c.Name()
e.Image = c.config.RootfsImageName
e.Type = events.Container
e.ContainerExitCode = int(exitCode)
if err := c.runtime.eventer.Write(e); err != nil {
logrus.Errorf("Unable to write container exited event: %q", err)
}
}
// newExecDiedEvent creates a new event for an exec session's death
func (c *Container) newExecDiedEvent(sessionID string, exitCode int) {
e := events.NewEvent(events.ExecDied)
e.ID = c.ID()
e.Name = c.Name()
e.Image = c.config.RootfsImageName
e.Type = events.Container
e.ContainerExitCode = exitCode
e.Attributes = make(map[string]string)
e.Attributes["execID"] = sessionID
if err := c.runtime.eventer.Write(e); err != nil {
logrus.Errorf("Unable to write exec died event: %q", err)
}
}
// netNetworkEvent creates a new event based on a network connect/disconnect
func (c *Container) newNetworkEvent(status events.Status, netName string) {
e := events.NewEvent(status)
e.ID = c.ID()
e.Name = c.Name()
e.Type = events.Network
e.Network = netName
if err := c.runtime.eventer.Write(e); err != nil {
logrus.Errorf("Unable to write pod event: %q", err)
}
}
// newPodEvent creates a new event for a libpod pod
func (p *Pod) newPodEvent(status events.Status) {
e := events.NewEvent(status)
e.ID = p.ID()
e.Name = p.Name()
e.Type = events.Pod
if err := p.runtime.eventer.Write(e); err != nil {
logrus.Errorf("Unable to write pod event: %q", err)
}
}
// NewSystemEvent creates a new event for libpod as a whole.
func (r *Runtime) NewSystemEvent(status events.Status) {
e := events.NewEvent(status)
e.Type = events.System
if err := r.eventer.Write(e); err != nil {
logrus.Errorf("Unable to write system event: %q", err)
}
}
// newVolumeEvent creates a new event for a libpod volume
func (v *Volume) newVolumeEvent(status events.Status) {
e := events.NewEvent(status)
e.Name = v.Name()
e.Type = events.Volume
if err := v.runtime.eventer.Write(e); err != nil {
logrus.Errorf("Unable to write volume event: %q", err)
}
}
// Events is a wrapper function for everyone to begin tailing the events log
// with options
func (r *Runtime) Events(ctx context.Context, options events.ReadOptions) error {
eventer, err := r.newEventer()
if err != nil {
return err
}
return eventer.Read(ctx, options)
}
// GetEvents reads the event log and returns events based on input filters
func (r *Runtime) GetEvents(ctx context.Context, filters []string) ([]*events.Event, error) {
eventChannel := make(chan *events.Event)
options := events.ReadOptions{
EventChannel: eventChannel,
Filters: filters,
FromStart: true,
Stream: false,
}
eventer, err := r.newEventer()
if err != nil {
return nil, err
}
logEvents := make([]*events.Event, 0, len(eventChannel))
readLock := sync.Mutex{}
readLock.Lock()
go func() {
for e := range eventChannel {
logEvents = append(logEvents, e)
}
readLock.Unlock()
}()
readErr := eventer.Read(ctx, options)
readLock.Lock() // Wait for the events to be consumed.
return logEvents, readErr
}
// GetLastContainerEvent takes a container name or ID and an event status and returns
// the last occurrence of the container event
func (r *Runtime) GetLastContainerEvent(ctx context.Context, nameOrID string, containerEvent events.Status) (*events.Event, error) {
// FIXME: events should be read in reverse order!
// https://github.com/containers/podman/issues/14579
// check to make sure the event.Status is valid
if _, err := events.StringToStatus(containerEvent.String()); err != nil {
return nil, err
}
filters := []string{
fmt.Sprintf("container=%s", nameOrID),
fmt.Sprintf("event=%s", containerEvent),
"type=container",
}
containerEvents, err := r.GetEvents(ctx, filters)
if err != nil {
return nil, err
}
if len(containerEvents) < 1 {
return nil, errors.Wrapf(events.ErrEventNotFound, "%s not found", containerEvent.String())
}
// return the last element in the slice
return containerEvents[len(containerEvents)-1], nil
}
// GetExecDiedEvent takes a container name or ID, exec session ID, and returns
// that exec session's Died event (if it has already occurred).
func (r *Runtime) GetExecDiedEvent(ctx context.Context, nameOrID, execSessionID string) (*events.Event, error) {
filters := []string{
fmt.Sprintf("container=%s", nameOrID),
"event=exec_died",
"type=container",
fmt.Sprintf("label=execID=%s", execSessionID),
}
containerEvents, err := r.GetEvents(ctx, filters)
if err != nil {
return nil, err
}
// There *should* only be one event maximum.
// But... just in case... let's not blow up if there's more than one.
if len(containerEvents) < 1 {
return nil, errors.Wrapf(events.ErrEventNotFound, "exec died event for session %s (container %s) not found", execSessionID, nameOrID)
}
return containerEvents[len(containerEvents)-1], nil
}
|
