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104 lines
3.1 KiB
104 lines
3.1 KiB
/*
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Copyright © 2019 Thorsten Klein <iwilltry42@gmail.com>
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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package docker
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import (
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"context"
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"fmt"
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"github.com/docker/docker/api/types/filters"
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"github.com/docker/docker/api/types"
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"github.com/docker/docker/client"
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k3d "github.com/rancher/k3d/pkg/types"
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log "github.com/sirupsen/logrus"
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)
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// CreateNode creates a new container
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func (d Docker) CreateNode(node *k3d.Node) error {
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log.Debugln("docker.CreateNode...")
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// translate node spec to docker container specs
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dockerNode, err := TranslateNodeToContainer(node)
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if err != nil {
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log.Errorln("Failed to translate k3d node specification to docker container specifications")
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return err
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}
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// create node
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if err := createContainer(dockerNode, node.Name); err != nil {
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log.Errorln("Failed to create k3d node")
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return err
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}
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return nil
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}
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// DeleteNode deletes a node
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func (d Docker) DeleteNode(nodeSpec *k3d.Node) error {
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log.Debugln("docker.DeleteNode...")
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return removeContainer(nodeSpec.Name)
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}
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// GetNodesByLabel returns a list of existing nodes
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func (d Docker) GetNodesByLabel(labels map[string]string) ([]*k3d.Node, error) {
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// (0) create docker client
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ctx := context.Background()
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docker, err := client.NewClientWithOpts(client.FromEnv, client.WithAPIVersionNegotiation())
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if err != nil {
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return nil, fmt.Errorf("Failed to create docker client. %+v", err)
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}
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// (1) list containers which have the default k3d labels attached
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filters := filters.NewArgs()
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for k, v := range k3d.DefaultObjectLabels {
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filters.Add("label", fmt.Sprintf("%s=%s", k, v))
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}
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for k, v := range labels {
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filters.Add("label", fmt.Sprintf("%s=%s", k, v))
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}
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containers, err := docker.ContainerList(ctx, types.ContainerListOptions{
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Filters: filters,
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All: true,
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})
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if err != nil {
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log.Errorln("Failed to list containers")
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return nil, err
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}
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// (2) convert them to node structs
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nodes := []*k3d.Node{}
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for _, container := range containers {
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node := &k3d.Node{
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Name: container.Names[0],
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Role: k3d.DefaultK3dRoles[container.Labels["role"]], // TODO: catch keyerror
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Labels: container.Labels,
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}
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nodes = append(nodes, node)
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}
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return nodes, nil
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}
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