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// Copyright 2016 Canonical Ltd.
// Licensed under the AGPLv3, see LICENCE file for details.
package proxyupdater
import (
"fmt"
"github.com/juju/errors"
"github.com/juju/juju/api/base"
apiwatcher "github.com/juju/juju/api/watcher"
"github.com/juju/juju/apiserver/params"
"github.com/juju/juju/watcher"
"github.com/juju/utils/proxy"
"gopkg.in/juju/names.v2"
)
const proxyUpdaterFacade = "ProxyUpdater"
// API provides access to the ProxyUpdater API facade.
type API struct {
tag names.Tag
facade base.FacadeCaller
}
// NewAPI returns a new api client facade instance.
func NewAPI(caller base.APICaller, tag names.Tag) (*API, error) {
if caller == nil {
return nil, fmt.Errorf("caller is nil")
}
if tag == nil {
return nil, fmt.Errorf("tag is nil")
}
return &API{
facade: base.NewFacadeCaller(caller, proxyUpdaterFacade),
tag: tag,
}, nil
}
// WatchForProxyConfigAndAPIHostPortChanges returns a NotifyWatcher waiting for
// changes in the proxy configuration or API host ports
func (api *API) WatchForProxyConfigAndAPIHostPortChanges() (watcher.NotifyWatcher, error) {
var results params.NotifyWatchResults
args := params.Entities{
Entities: []params.Entity{{Tag: api.tag.String()}},
}
err := api.facade.FacadeCall("WatchForProxyConfigAndAPIHostPortChanges", args, &results)
if err != nil {
return nil, err
}
if len(results.Results) != 1 {
return nil, errors.Errorf("expected 1 result, got %d", len(results.Results))
}
result := results.Results[0]
if result.Error != nil {
return nil, result.Error
}
return newNotifyWatcher(api.facade.RawAPICaller(), result), nil
}
var newNotifyWatcher = apiwatcher.NewNotifyWatcher
func proxySettingsParamToProxySettings(cfg params.ProxyConfig) proxy.Settings {
return proxy.Settings{
Http: cfg.HTTP,
Https: cfg.HTTPS,
Ftp: cfg.FTP,
NoProxy: cfg.NoProxy,
}
}
// ProxyConfig returns the proxy settings for the current environment
func (api *API) ProxyConfig() (proxySettings, APTProxySettings proxy.Settings, err error) {
var results params.ProxyConfigResults
args := params.Entities{
Entities: []params.Entity{{Tag: api.tag.String()}},
}
err = api.facade.FacadeCall("ProxyConfig", args, &results)
if err != nil {
return proxySettings, APTProxySettings, err
}
if len(results.Results) != 1 {
return proxySettings, APTProxySettings, errors.NotFoundf("ProxyConfig for %q", api.tag)
}
result := results.Results[0]
proxySettings = proxySettingsParamToProxySettings(result.ProxySettings)
APTProxySettings = proxySettingsParamToProxySettings(result.APTProxySettings)
return proxySettings, APTProxySettings, nil
}
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