HGKeeper

// Convey

// This program is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

// This program is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License

// along with this program. If not, see <http://www.gnu.org/licenses/>.

package docker

import (

log "github.com/sirupsen/logrus"

"hg.sr.ht/~grim/convey/environment"

"hg.sr.ht/~grim/convey/runtime"

"hg.sr.ht/~grim/convey/tasks"

"hg.sr.ht/~grim/convey/yaml"

)

// Pull represents a docker pull task which pulls an image from a docker

// registry.

type Pull struct {

Image string `yaml:"image"`

Images yaml.StringOrSlice `yaml:"images"`

}

// Execute runs the pull task.

func (p *Pull) Execute(name string, logger *log.Entry, env *environment.Environment, rt *runtime.Runtime) error {

fullEnv := env.Copy().Merge(rt.Environment)

images, err := fullEnv.MapSlice(p.Images)

if err != nil {

return err

}

for _, image := range images {

cmdv := []string{"pull", image}

if err := Docker(name, cmdv, rt); err != nil {

return err

}

return nil

}

// New creates a new pull task.

func (p *Pull) New() tasks.Task {

return &Pull{}

}

// Valid validates the pull task.

func (p *Pull) Valid() error {

if p.Image != "" {

p.Images = append([]string{p.Image}, p.Images...)

}

if len(p.Images) == 0 {

return errNoImages

}

return nil

}