0af9af44e5
It's up to the end user to decide who is writing and/or overwriting them. It could also be useful to reimplement (refactor) some of the existing World API's to be implemented in terms of these primitives.
96 lines
3.6 KiB
Go
96 lines
3.6 KiB
Go
// Mgmt
|
|
// Copyright (C) 2013-2017+ James Shubin and the project contributors
|
|
// Written by James Shubin <james@shubin.ca> and the project contributors
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Affero General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Affero General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Affero General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package etcd
|
|
|
|
import (
|
|
"github.com/purpleidea/mgmt/resources"
|
|
)
|
|
|
|
// World is an etcd backed implementation of the World interface.
|
|
type World struct {
|
|
Hostname string // uuid for the consumer of these
|
|
EmbdEtcd *EmbdEtcd
|
|
}
|
|
|
|
// ResWatch returns a channel which spits out events on possible exported
|
|
// resource changes.
|
|
func (obj *World) ResWatch() chan error {
|
|
return WatchResources(obj.EmbdEtcd)
|
|
}
|
|
|
|
// ResExport exports a list of resources under our hostname namespace.
|
|
// Subsequent calls replace the previously set collection atomically.
|
|
func (obj *World) ResExport(resourceList []resources.Res) error {
|
|
return SetResources(obj.EmbdEtcd, obj.Hostname, resourceList)
|
|
}
|
|
|
|
// ResCollect gets the collection of exported resources which match the filter.
|
|
// It does this atomically so that a call always returns a complete collection.
|
|
func (obj *World) ResCollect(hostnameFilter, kindFilter []string) ([]resources.Res, error) {
|
|
// XXX: should we be restricted to retrieving resources that were
|
|
// exported with a tag that allows or restricts our hostname? We could
|
|
// enforce that here if the underlying API supported it... Add this?
|
|
return GetResources(obj.EmbdEtcd, hostnameFilter, kindFilter)
|
|
}
|
|
|
|
// StrWatch returns a channel which spits out events on possible string changes.
|
|
func (obj *World) StrWatch(namespace string) chan error {
|
|
return WatchStr(obj.EmbdEtcd, namespace)
|
|
}
|
|
|
|
// StrIsNotExist returns whether the error from StrGet is a key missing error.
|
|
func (obj *World) StrIsNotExist(err error) bool {
|
|
return err == ErrNotExist
|
|
}
|
|
|
|
// StrGet returns the value for the the given namespace.
|
|
func (obj *World) StrGet(namespace string) (string, error) {
|
|
return GetStr(obj.EmbdEtcd, namespace)
|
|
}
|
|
|
|
// StrSet sets the namespace value to a particular string.
|
|
func (obj *World) StrSet(namespace, value string) error {
|
|
return SetStr(obj.EmbdEtcd, namespace, &value)
|
|
}
|
|
|
|
// StrDel deletes the value in a particular namespace.
|
|
func (obj *World) StrDel(namespace string) error {
|
|
return SetStr(obj.EmbdEtcd, namespace, nil)
|
|
}
|
|
|
|
// StrMapWatch returns a channel which spits out events on possible string changes.
|
|
func (obj *World) StrMapWatch(namespace string) chan error {
|
|
return WatchStrMap(obj.EmbdEtcd, namespace)
|
|
}
|
|
|
|
// StrMapGet returns a map of hostnames to values in the given namespace.
|
|
func (obj *World) StrMapGet(namespace string) (map[string]string, error) {
|
|
return GetStrMap(obj.EmbdEtcd, []string{}, namespace)
|
|
}
|
|
|
|
// StrMapSet sets the namespace value to a particular string under the identity
|
|
// of its own hostname.
|
|
func (obj *World) StrMapSet(namespace, value string) error {
|
|
return SetStrMap(obj.EmbdEtcd, obj.Hostname, namespace, &value)
|
|
}
|
|
|
|
// StrMapDel deletes the value in a particular namespace.
|
|
func (obj *World) StrMapDel(namespace string) error {
|
|
return SetStrMap(obj.EmbdEtcd, obj.Hostname, namespace, nil)
|
|
}
|