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fc7b904dce
`Mounts` allows users to specify in a much safer way the volumes they
want to use in the container.
This replaces `Binds` and `Volumes`, which both still exist, but
`Mounts` and `Binds`/`Volumes` are exclussive.
The CLI will continue to use `Binds` and `Volumes` due to concerns with
parsing the volume specs on the client side and cross-platform support
(for now).
The new API follows exactly the services mount API.
Example usage of `Mounts`:
```
$ curl -XPOST localhost:2375/containers/create -d '{
"Image": "alpine:latest",
"HostConfig": {
"Mounts": [{
"Type": "Volume",
"Target": "/foo"
},{
"Type": "bind",
"Source": "/var/run/docker.sock",
"Target": "/var/run/docker.sock",
},{
"Type": "volume",
"Name": "important_data",
"Target": "/var/data",
"ReadOnly": true,
"VolumeOptions": {
"DriverConfig": {
Name: "awesomeStorage",
Options: {"size": "10m"},
Labels: {"some":"label"}
}
}]
}
}'
```
There are currently 2 types of mounts:
- **bind**: Paths on the host that get mounted into the
container. Paths must exist prior to creating the container.
- **volume**: Volumes that persist after the
container is removed.
Not all fields are available in each type, and validation is done to
ensure these fields aren't mixed up between types.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
47 lines
1.3 KiB
Go
47 lines
1.3 KiB
Go
// +build linux
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package volume
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import (
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"strings"
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mounttypes "github.com/docker/docker/api/types/mount"
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)
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// DefaultPropagationMode defines what propagation mode should be used by
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// default if user has not specified one explicitly.
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// propagation modes
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const DefaultPropagationMode = mounttypes.PropagationRPrivate
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var propagationModes = map[mounttypes.Propagation]bool{
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mounttypes.PropagationPrivate: true,
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mounttypes.PropagationRPrivate: true,
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mounttypes.PropagationSlave: true,
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mounttypes.PropagationRSlave: true,
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mounttypes.PropagationShared: true,
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mounttypes.PropagationRShared: true,
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}
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// GetPropagation extracts and returns the mount propagation mode. If there
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// are no specifications, then by default it is "private".
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func GetPropagation(mode string) mounttypes.Propagation {
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for _, o := range strings.Split(mode, ",") {
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prop := mounttypes.Propagation(o)
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if propagationModes[prop] {
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return prop
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}
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}
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return DefaultPropagationMode
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}
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// HasPropagation checks if there is a valid propagation mode present in
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// passed string. Returns true if a valid propagation mode specifier is
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// present, false otherwise.
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func HasPropagation(mode string) bool {
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for _, o := range strings.Split(mode, ",") {
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if propagationModes[mounttypes.Propagation(o)] {
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return true
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}
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}
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return false
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}
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