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meta.go
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/
meta.go
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//
// Copyright 2020 Verizon Media
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package meta
import (
"fmt"
"io/ioutil"
"net/http"
"time"
)
// GetData makes a http call to the local metadata end point and returns the metadata document as bytes
func GetData(base, path string) ([]byte, error) {
c := &http.Client{}
c.Timeout = 10 * time.Second
req, err := http.NewRequest("GET", base+path, nil)
if err != nil {
return nil, err
}
req.Header.Set("Metadata", "true")
res, err := c.Do(req)
if err != nil {
return nil, err
}
body, err := ioutil.ReadAll(res.Body)
_ = res.Body.Close()
if err != nil {
return nil, err
}
if res.StatusCode == 200 {
return body, nil
}
return nil, fmt.Errorf("cannot get metadata, path: %q, status code is %d/%s", base+path, res.StatusCode, res.Status)
}