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
|
package events
import (
"strings"
"time"
"github.com/containers/podman/v4/pkg/util"
"github.com/pkg/errors"
)
func generateEventFilter(filter, filterValue string) (func(e *Event) bool, error) {
switch strings.ToUpper(filter) {
case "CONTAINER":
return func(e *Event) bool {
if e.Type != Container {
return false
}
if e.Name == filterValue {
return true
}
return strings.HasPrefix(e.ID, filterValue)
}, nil
case "EVENT", "STATUS":
return func(e *Event) bool {
return string(e.Status) == filterValue
}, nil
case "IMAGE":
return func(e *Event) bool {
if e.Type != Image {
return false
}
if e.Name == filterValue {
return true
}
return strings.HasPrefix(e.ID, filterValue)
}, nil
case "POD":
return func(e *Event) bool {
if e.Type != Pod {
return false
}
if e.Name == filterValue {
return true
}
return strings.HasPrefix(e.ID, filterValue)
}, nil
case "VOLUME":
return func(e *Event) bool {
if e.Type != Volume {
return false
}
return strings.HasPrefix(e.ID, filterValue)
}, nil
case "TYPE":
return func(e *Event) bool {
return string(e.Type) == filterValue
}, nil
case "LABEL":
return func(e *Event) bool {
var found bool
// iterate labels and see if we match a key and value
for eventKey, eventValue := range e.Attributes {
filterValueSplit := strings.SplitN(filterValue, "=", 2)
// if the filter isn't right, just return false
if len(filterValueSplit) < 2 {
return false
}
if eventKey == filterValueSplit[0] && eventValue == filterValueSplit[1] {
found = true
break
}
}
return found
}, nil
}
return nil, errors.Errorf("%s is an invalid filter", filter)
}
func generateEventSinceOption(timeSince time.Time) func(e *Event) bool {
return func(e *Event) bool {
return e.Time.After(timeSince)
}
}
func generateEventUntilOption(timeUntil time.Time) func(e *Event) bool {
return func(e *Event) bool {
return e.Time.Before(timeUntil)
}
}
func parseFilter(filter string) (string, string, error) {
filterSplit := strings.SplitN(filter, "=", 2)
if len(filterSplit) != 2 {
return "", "", errors.Errorf("%s is an invalid filter", filter)
}
return filterSplit[0], filterSplit[1], nil
}
// applyFilters applies the EventFilter slices in sequence. Filters under the
// same key are disjunctive while each key must match (conjuctive).
func applyFilters(event *Event, filterMap map[string][]EventFilter) bool {
for _, filters := range filterMap {
success := false
for _, filter := range filters {
if filter(event) {
success = true
break
}
}
if !success {
return false
}
}
return true
}
// generateEventFilter parses the specified filters into a filter map that can
// later on be used to filter events. Keys are conjunctive, values are
// disjunctive.
func generateEventFilters(filters []string, since, until string) (map[string][]EventFilter, error) {
filterMap := make(map[string][]EventFilter)
for _, filter := range filters {
key, val, err := parseFilter(filter)
if err != nil {
return nil, err
}
filterFunc, err := generateEventFilter(key, val)
if err != nil {
return nil, err
}
filterSlice := filterMap[key]
filterSlice = append(filterSlice, filterFunc)
filterMap[key] = filterSlice
}
if len(since) > 0 {
timeSince, err := util.ParseInputTime(since, true)
if err != nil {
return nil, errors.Wrapf(err, "unable to convert since time of %s", since)
}
filterFunc := generateEventSinceOption(timeSince)
filterMap["since"] = []EventFilter{filterFunc}
}
if len(until) > 0 {
timeUntil, err := util.ParseInputTime(until, false)
if err != nil {
return nil, errors.Wrapf(err, "unable to convert until time of %s", until)
}
filterFunc := generateEventUntilOption(timeUntil)
filterMap["until"] = []EventFilter{filterFunc}
}
return filterMap, nil
}
|
