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authorMatthew Heon <matthew.heon@pm.me>2019-07-15 14:55:20 -0400
committerMatthew Heon <matthew.heon@pm.me>2019-08-02 15:08:30 -0400
commit8b72a72ca2171a8545023ee45ab42de9a78ae5f4 (patch)
treea3088463cf5c93883a1bf09498e927a35ae70793 /libpod
parent3cc9ab8992833ddf952df479ffb239c61845fa2e (diff)
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Implement backend for 'volume inspect'
Begin to separate the internal structures and frontend for inspect on volumes. We can't rely on keeping internal data structures for external presentation - separating presentation and internal data format is good practice. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
Diffstat (limited to 'libpod')
-rw-r--r--libpod/options.go44
-rw-r--r--libpod/runtime_volume_linux.go7
-rw-r--r--libpod/volume.go46
-rw-r--r--libpod/volume_inspect.go70
4 files changed, 128 insertions, 39 deletions
diff --git a/libpod/options.go b/libpod/options.go
index 7fbd0016a..3a123a2a6 100644
--- a/libpod/options.go
+++ b/libpod/options.go
@@ -1362,6 +1362,17 @@ func WithNamedVolumes(volumes []*ContainerNamedVolume) CtrCreateOption {
}
}
+// WithHealthCheck adds the healthcheck to the container config
+func WithHealthCheck(healthCheck *manifest.Schema2HealthConfig) CtrCreateOption {
+ return func(ctr *Container) error {
+ if ctr.valid {
+ return define.ErrCtrFinalized
+ }
+ ctr.config.HealthCheckConfig = healthCheck
+ return nil
+ }
+}
+
// Volume Creation Options
// WithVolumeName sets the name of the volume.
@@ -1381,30 +1392,30 @@ func WithVolumeName(name string) VolumeCreateOption {
}
}
-// WithVolumeLabels sets the labels of the volume.
-func WithVolumeLabels(labels map[string]string) VolumeCreateOption {
+// WithVolumeDriver sets the volume's driver.
+// It is presently not implemented, but will be supported in a future Podman
+// release.
+func WithVolumeDriver(driver string) VolumeCreateOption {
return func(volume *Volume) error {
if volume.valid {
return define.ErrVolumeFinalized
}
- volume.config.Labels = make(map[string]string)
- for key, value := range labels {
- volume.config.Labels[key] = value
- }
-
- return nil
+ return define.ErrNotImplemented
}
}
-// WithVolumeDriver sets the driver of the volume.
-func WithVolumeDriver(driver string) VolumeCreateOption {
+// WithVolumeLabels sets the labels of the volume.
+func WithVolumeLabels(labels map[string]string) VolumeCreateOption {
return func(volume *Volume) error {
if volume.valid {
return define.ErrVolumeFinalized
}
- volume.config.Driver = driver
+ volume.config.Labels = make(map[string]string)
+ for key, value := range labels {
+ volume.config.Labels[key] = value
+ }
return nil
}
@@ -1673,14 +1684,3 @@ func WithInfraContainerPorts(bindings []ocicni.PortMapping) PodCreateOption {
return nil
}
}
-
-// WithHealthCheck adds the healthcheck to the container config
-func WithHealthCheck(healthCheck *manifest.Schema2HealthConfig) CtrCreateOption {
- return func(ctr *Container) error {
- if ctr.valid {
- return define.ErrCtrFinalized
- }
- ctr.config.HealthCheckConfig = healthCheck
- return nil
- }
-}
diff --git a/libpod/runtime_volume_linux.go b/libpod/runtime_volume_linux.go
index ac6fd02c3..84703787d 100644
--- a/libpod/runtime_volume_linux.go
+++ b/libpod/runtime_volume_linux.go
@@ -7,6 +7,7 @@ import (
"os"
"path/filepath"
"strings"
+ "time"
"github.com/containers/libpod/libpod/define"
"github.com/containers/libpod/libpod/events"
@@ -42,14 +43,10 @@ func (r *Runtime) newVolume(ctx context.Context, options ...VolumeCreateOption)
if volume.config.Name == "" {
volume.config.Name = stringid.GenerateNonCryptoID()
}
- // TODO: support for other volume drivers
if volume.config.Driver == "" {
volume.config.Driver = "local"
}
- // TODO: determine when the scope is global and set it to that
- if volume.config.Scope == "" {
- volume.config.Scope = "local"
- }
+ volume.config.CreatedTime = time.Now()
// Create the mountpoint of this volume
volPathRoot := filepath.Join(r.config.VolumePath, volume.config.Name)
diff --git a/libpod/volume.go b/libpod/volume.go
index 9ed2ff087..bb1e9b6f1 100644
--- a/libpod/volume.go
+++ b/libpod/volume.go
@@ -1,5 +1,9 @@
package libpod
+import (
+ "time"
+)
+
// Volume is the type used to create named volumes
// TODO: all volumes should be created using this and the Volume API
type Volume struct {
@@ -15,10 +19,10 @@ type VolumeConfig struct {
Name string `json:"name"`
Labels map[string]string `json:"labels"`
- MountPoint string `json:"mountPoint"`
Driver string `json:"driver"`
+ MountPoint string `json:"mountPoint"`
+ CreatedTime time.Time `json:"createdAt,omitempty"`
Options map[string]string `json:"options"`
- Scope string `json:"scope"`
IsCtrSpecific bool `json:"ctrSpecific"`
UID int `json:"uid"`
GID int `json:"gid"`
@@ -29,6 +33,18 @@ func (v *Volume) Name() string {
return v.config.Name
}
+// Driver retrieves the volume's driver.
+func (v *Volume) Driver() string {
+ return v.config.Driver
+}
+
+// Scope retrieves the volume's scope.
+// Libpod does not implement volume scoping, and this is provided solely for
+// Docker compatability. It returns only "local".
+func (v *Volume) Scope() string {
+ return "local"
+}
+
// Labels returns the volume's labels
func (v *Volume) Labels() map[string]string {
labels := make(map[string]string)
@@ -43,11 +59,6 @@ func (v *Volume) MountPoint() string {
return v.config.MountPoint
}
-// Driver returns the volume's driver
-func (v *Volume) Driver() string {
- return v.config.Driver
-}
-
// Options return the volume's options
func (v *Volume) Options() map[string]string {
options := make(map[string]string)
@@ -58,14 +69,25 @@ func (v *Volume) Options() map[string]string {
return options
}
-// Scope returns the scope of the volume
-func (v *Volume) Scope() string {
- return v.config.Scope
-}
-
// IsCtrSpecific returns whether this volume was created specifically for a
// given container. Images with this set to true will be removed when the
// container is removed with the Volumes parameter set to true.
func (v *Volume) IsCtrSpecific() bool {
return v.config.IsCtrSpecific
}
+
+// UID returns the UID the volume will be created as.
+func (v *Volume) UID() int {
+ return v.config.UID
+}
+
+// GID returns the GID the volume will be created as.
+func (v *Volume) GID() int {
+ return v.config.GID
+}
+
+// CreatedTime returns the time the volume was created at. It was not tracked
+// for some time, so older volumes may not contain one.
+func (v *Volume) CreatedTime() time.Time {
+ return v.config.CreatedTime
+}
diff --git a/libpod/volume_inspect.go b/libpod/volume_inspect.go
new file mode 100644
index 000000000..893661a7a
--- /dev/null
+++ b/libpod/volume_inspect.go
@@ -0,0 +1,70 @@
+package libpod
+
+import (
+ "time"
+
+ "github.com/containers/libpod/libpod/define"
+)
+
+// InspectVolumeData is the output of Inspect() on a volume. It is matched to
+// the format of 'docker volume inspect'.
+type InspectVolumeData struct {
+ // Name is the name of the volume.
+ Name string `json:"Name"`
+ // Driver is the driver used to create the volume.
+ // This will be properly implemented in a future version.
+ Driver string `json:"Driver"`
+ // Mountpoint is the path on the host where the volume is mounted.
+ Mountpoint string `json:"Mountpoint"`
+ // CreatedAt is the date and time the volume was created at. This is not
+ // stored for older Libpod volumes; if so, it will be omitted.
+ CreatedAt time.Time `json:"CreatedAt,omitempty"`
+ // Status is presently unused and provided only for Docker compatability.
+ // In the future it will be used to return information on the volume's
+ // current state.
+ Status map[string]string `json:"Status,omitempty"`
+ // Labels includes the volume's configured labels, key:value pairs that
+ // can be passed during volume creation to provide information for third
+ // party tools.
+ Labels map[string]string `json:"Labels"`
+ // Scope is unused and provided solely for Docker compatability. It is
+ // unconditionally set to "local".
+ Scope string `json:"Scope"`
+ // Options is a set of options that were used when creating the volume.
+ // It is presently not used.
+ Options map[string]string `json:"Options"`
+ // UID is the UID that the volume was created with.
+ UID int `json:"UID,omitempty"`
+ // GID is the GID that the volume was created with.
+ GID int `json:"GID,omitempty"`
+ // ContainerSpecific indicates that the volume was created as part of a
+ // specific container, and will be removed when that container is
+ // removed.
+ ContainerSpecific bool `json:"ContainerSpecific,omitempty"`
+}
+
+// Inspect provides detailed information about the configuration of the given
+// volume.
+func (v *Volume) Inspect() (*InspectVolumeData, error) {
+ if !v.valid {
+ return nil, define.ErrVolumeRemoved
+ }
+
+ data := new(InspectVolumeData)
+
+ data.Name = v.config.Name
+ data.Driver = v.config.Driver
+ data.Mountpoint = v.config.MountPoint
+ data.CreatedAt = v.config.CreatedTime
+ data.Labels = make(map[string]string)
+ for k, v := range v.config.Labels {
+ data.Labels[k] = v
+ }
+ data.Scope = v.Scope()
+ data.Options = make(map[string]string)
+ data.UID = v.config.UID
+ data.GID = v.config.GID
+ data.ContainerSpecific = v.config.IsCtrSpecific
+
+ return data, nil
+}