78 lines
1.9 KiB
Go
78 lines
1.9 KiB
Go
/*
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Copyright 2014 CoreOS, Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package metadata
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import (
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"strings"
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"github.com/coreos/coreos-cloudinit/pkg"
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)
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type MetadataService struct {
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Root string
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Client pkg.Getter
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ApiVersion string
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UserdataPath string
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MetadataPath string
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}
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func NewDatasource(root, apiVersion, userdataPath, metadataPath string) MetadataService {
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if !strings.HasSuffix(root, "/") {
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root += "/"
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}
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return MetadataService{root, pkg.NewHttpClient(), apiVersion, userdataPath, metadataPath}
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}
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func (ms MetadataService) IsAvailable() bool {
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_, err := ms.Client.Get(ms.Root + ms.ApiVersion)
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return (err == nil)
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}
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func (ms MetadataService) AvailabilityChanges() bool {
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return true
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}
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func (ms MetadataService) ConfigRoot() string {
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return ms.Root
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}
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func (ms MetadataService) FetchUserdata() ([]byte, error) {
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return ms.FetchData(ms.UserdataUrl())
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}
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func (ms MetadataService) FetchNetworkConfig(filename string) ([]byte, error) {
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return nil, nil
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}
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func (ms MetadataService) FetchData(url string) ([]byte, error) {
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if data, err := ms.Client.GetRetry(url); err == nil {
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return data, err
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} else if _, ok := err.(pkg.ErrNotFound); ok {
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return []byte{}, nil
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} else {
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return data, err
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}
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}
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func (ms MetadataService) MetadataUrl() string {
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return (ms.Root + ms.MetadataPath)
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}
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func (ms MetadataService) UserdataUrl() string {
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return (ms.Root + ms.UserdataPath)
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}
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