1855090f26
This commit updates the implementation to use a native docker client as opposed to calling an external executable.
71 lines
1.8 KiB
Go
71 lines
1.8 KiB
Go
package docker
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import (
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"context"
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"github.com/FAU-CDI/wisski-distillery/internal/dis/component"
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"github.com/docker/docker/api/types"
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"github.com/docker/docker/api/types/filters"
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"github.com/docker/docker/client"
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)
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type Docker struct {
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component.Base
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}
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// DockerClient is a client to the docker api
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type DockerClient = *client.Client
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func (docker *Docker) APIClient() (DockerClient, error) {
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cli, err := client.NewClientWithOpts(client.FromEnv, client.WithAPIVersionNegotiation())
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if err != nil {
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return nil, err
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}
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return cli, nil
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}
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// Ping pings the docker daemon to check if it is properly working
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func (docker *Docker) Ping(ctx context.Context) (types.Ping, error) {
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client, err := docker.APIClient()
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if err != nil {
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return types.Ping{}, err
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}
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defer client.Close()
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ping, err := client.Ping(ctx)
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if err != nil {
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return types.Ping{}, err
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}
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return ping, err
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}
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// CreateNetwork creates a docker network with the given name unless it already exists.
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// The new network will be of default type.
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// exists indicates if the network already exists.
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func (docker *Docker) CreateNetwork(ctx context.Context, name string) (id string, exists bool, err error) {
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// create a new docker client
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client, err := docker.APIClient()
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if err != nil {
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return "", false, err
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}
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defer client.Close()
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// check if the network exists, by listing the network name
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list, err := client.NetworkList(ctx, types.NetworkListOptions{Filters: filters.NewArgs(filters.KeyValuePair{Key: "name", Value: name})})
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if err != nil {
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return "", false, err
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}
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// network already exists => nothing to do
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if len(list) == 1 {
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return list[0].ID, true, nil
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}
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// do the actual create!
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create, err := client.NetworkCreate(ctx, name, types.NetworkCreate{CheckDuplicate: true})
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if err != nil {
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return "", false, err
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}
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return create.ID, false, nil
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}
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