63 lines
1.6 KiB
Go
63 lines
1.6 KiB
Go
package docker
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"github.com/containous/traefik/pkg/config/label"
|
|
)
|
|
|
|
const (
|
|
labelDockerComposeProject = "com.docker.compose.project"
|
|
labelDockerComposeService = "com.docker.compose.service"
|
|
)
|
|
|
|
// configuration Contains information from the labels that are globals (not related to the dynamic configuration) or specific to the provider.
|
|
type configuration struct {
|
|
Enable bool
|
|
Tags []string
|
|
Docker specificConfiguration
|
|
}
|
|
|
|
type specificConfiguration struct {
|
|
Network string
|
|
LBSwarm bool
|
|
}
|
|
|
|
func (p *Provider) getConfiguration(container dockerData) (configuration, error) {
|
|
conf := configuration{
|
|
Enable: p.ExposedByDefault,
|
|
Docker: specificConfiguration{
|
|
Network: p.Network,
|
|
},
|
|
}
|
|
|
|
err := label.Decode(container.Labels, &conf, "traefik.docker.", "traefik.enable", "traefik.tags")
|
|
if err != nil {
|
|
return configuration{}, err
|
|
}
|
|
|
|
return conf, nil
|
|
}
|
|
|
|
// getStringMultipleStrict get multiple string values associated to several labels
|
|
// Fail if one label is missing
|
|
func getStringMultipleStrict(labels map[string]string, labelNames ...string) (map[string]string, error) {
|
|
foundLabels := map[string]string{}
|
|
for _, name := range labelNames {
|
|
value := getStringValue(labels, name, "")
|
|
// Error out only if one of them is not defined.
|
|
if len(value) == 0 {
|
|
return nil, fmt.Errorf("label not found: %s", name)
|
|
}
|
|
foundLabels[name] = value
|
|
}
|
|
return foundLabels, nil
|
|
}
|
|
|
|
// getStringValue get string value associated to a label
|
|
func getStringValue(labels map[string]string, labelName string, defaultValue string) string {
|
|
if value, ok := labels[labelName]; ok && len(value) > 0 {
|
|
return value
|
|
}
|
|
return defaultValue
|
|
}
|