/
get.go
61 lines (56 loc) · 1.53 KB
/
get.go
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// Copyright 2013 Canonical Ltd.
// Licensed under the AGPLv3, see LICENCE file for details.
package service
import (
"gopkg.in/juju/charm.v6-unstable"
"github.com/juju/juju/apiserver/params"
"github.com/juju/juju/constraints"
)
// Get returns the configuration for a service.
func (api *API) Get(args params.ServiceGet) (params.ServiceGetResults, error) {
service, err := api.state.Service(args.ServiceName)
if err != nil {
return params.ServiceGetResults{}, err
}
settings, err := service.ConfigSettings()
if err != nil {
return params.ServiceGetResults{}, err
}
charm, _, err := service.Charm()
if err != nil {
return params.ServiceGetResults{}, err
}
configInfo := describe(settings, charm.Config())
var constraints constraints.Value
if service.IsPrincipal() {
constraints, err = service.Constraints()
if err != nil {
return params.ServiceGetResults{}, err
}
}
return params.ServiceGetResults{
Service: args.ServiceName,
Charm: charm.Meta().Name,
Config: configInfo,
Constraints: constraints,
}, nil
}
func describe(settings charm.Settings, config *charm.Config) map[string]interface{} {
results := make(map[string]interface{})
for name, option := range config.Options {
info := map[string]interface{}{
"description": option.Description,
"type": option.Type,
}
if value := settings[name]; value != nil {
info["value"] = value
} else {
if option.Default != nil {
info["value"] = option.Default
}
info["default"] = true
}
results[name] = info
}
return results
}