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>
43 lines
1.5 KiB
Go
43 lines
1.5 KiB
Go
package volume
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import (
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"errors"
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"io/ioutil"
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"os"
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"strings"
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"testing"
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"github.com/docker/docker/api/types/mount"
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)
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func TestValidateMount(t *testing.T) {
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testDir, err := ioutil.TempDir("", "test-validate-mount")
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(testDir)
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cases := []struct {
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input mount.Mount
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expected error
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}{
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{mount.Mount{Type: mount.TypeVolume}, errMissingField("Target")},
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{mount.Mount{Type: mount.TypeVolume, Target: testDestinationPath, Source: "hello"}, nil},
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{mount.Mount{Type: mount.TypeVolume, Target: testDestinationPath}, nil},
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{mount.Mount{Type: mount.TypeBind}, errMissingField("Target")},
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{mount.Mount{Type: mount.TypeBind, Target: testDestinationPath}, errMissingField("Source")},
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{mount.Mount{Type: mount.TypeBind, Target: testDestinationPath, Source: testSourcePath, VolumeOptions: &mount.VolumeOptions{}}, errExtraField("VolumeOptions")},
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{mount.Mount{Type: mount.TypeBind, Source: testSourcePath, Target: testDestinationPath}, errBindNotExist},
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{mount.Mount{Type: mount.TypeBind, Source: testDir, Target: testDestinationPath}, nil},
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{mount.Mount{Type: "invalid", Target: testDestinationPath}, errors.New("mount type unknown")},
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}
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for i, x := range cases {
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err := validateMountConfig(&x.input)
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if err == nil && x.expected == nil {
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continue
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}
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if (err == nil && x.expected != nil) || (x.expected == nil && err != nil) || !strings.Contains(err.Error(), x.expected.Error()) {
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t.Fatalf("expected %q, got %q, case: %d", x.expected, err, i)
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}
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}
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}
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