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
|
package libpod
import (
"context"
"github.com/containers/podman/v2/libpod/define"
"github.com/containers/podman/v2/libpod/events"
"github.com/containers/podman/v2/pkg/domain/entities/reports"
"github.com/pkg/errors"
)
// Contains the public Runtime API for volumes
// A VolumeCreateOption is a functional option which alters the Volume created by
// NewVolume
type VolumeCreateOption func(*Volume) error
// VolumeFilter is a function to determine whether a volume is included in command
// output. Volumes to be outputted are tested using the function. a true return will
// include the volume, a false return will exclude it.
type VolumeFilter func(*Volume) bool
// RemoveVolume removes a volumes
func (r *Runtime) RemoveVolume(ctx context.Context, v *Volume, force bool) error {
r.lock.Lock()
defer r.lock.Unlock()
if !r.valid {
return define.ErrRuntimeStopped
}
if !v.valid {
if ok, _ := r.state.HasVolume(v.Name()); !ok {
// Volume probably already removed
// Or was never in the runtime to begin with
return nil
}
}
return r.removeVolume(ctx, v, force)
}
// GetVolume retrieves a volume given its full name.
func (r *Runtime) GetVolume(name string) (*Volume, error) {
r.lock.RLock()
defer r.lock.RUnlock()
if !r.valid {
return nil, define.ErrRuntimeStopped
}
vol, err := r.state.Volume(name)
if err != nil {
return nil, err
}
return vol, nil
}
// LookupVolume retrieves a volume by unambiguous partial name.
func (r *Runtime) LookupVolume(name string) (*Volume, error) {
r.lock.RLock()
defer r.lock.RUnlock()
if !r.valid {
return nil, define.ErrRuntimeStopped
}
vol, err := r.state.LookupVolume(name)
if err != nil {
return nil, err
}
return vol, nil
}
// HasVolume checks to see if a volume with the given name exists
func (r *Runtime) HasVolume(name string) (bool, error) {
r.lock.RLock()
defer r.lock.RUnlock()
if !r.valid {
return false, define.ErrRuntimeStopped
}
return r.state.HasVolume(name)
}
// Volumes retrieves all volumes
// Filters can be provided which will determine which volumes are included in the
// output. If multiple filters are used, a volume will be returned if
// any of the filters are matched
func (r *Runtime) Volumes(filters ...VolumeFilter) ([]*Volume, error) {
r.lock.RLock()
defer r.lock.RUnlock()
if !r.valid {
return nil, define.ErrRuntimeStopped
}
vols, err := r.state.AllVolumes()
if err != nil {
return nil, err
}
if len(filters) == 0 {
return vols, nil
}
volsFiltered := make([]*Volume, 0, len(vols))
for _, vol := range vols {
include := false
for _, filter := range filters {
include = include || filter(vol)
}
if include {
volsFiltered = append(volsFiltered, vol)
}
}
return volsFiltered, nil
}
// GetAllVolumes retrieves all the volumes
func (r *Runtime) GetAllVolumes() ([]*Volume, error) {
r.lock.RLock()
defer r.lock.RUnlock()
if !r.valid {
return nil, define.ErrRuntimeStopped
}
return r.state.AllVolumes()
}
// PruneVolumes removes unused volumes from the system
func (r *Runtime) PruneVolumes(ctx context.Context, filterFuncs []VolumeFilter) ([]*reports.PruneReport, error) {
preports := make([]*reports.PruneReport, 0)
vols, err := r.Volumes(filterFuncs...)
if err != nil {
return nil, err
}
for _, vol := range vols {
report := new(reports.PruneReport)
volSize, err := vol.Size()
if err != nil {
volSize = 0
}
report.Size = volSize
report.Id = vol.Name()
if err := r.RemoveVolume(ctx, vol, false); err != nil {
if errors.Cause(err) != define.ErrVolumeBeingUsed && errors.Cause(err) != define.ErrVolumeRemoved {
report.Err = err
} else {
// We didn't remove the volume for some reason
continue
}
} else {
vol.newVolumeEvent(events.Prune)
}
preports = append(preports, report)
}
return preports, nil
}
|
