68 lines
2.0 KiB
Go
68 lines
2.0 KiB
Go
// Package api contains the common code shared by all Azure API libraries.
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package api
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import (
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"encoding/json"
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"fmt"
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"io/ioutil"
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"net/http"
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)
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// Error contains an error response from the server.
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type Error struct {
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// StatusCode is the HTTP response status code and will always be populated.
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StatusCode int `json:"statusCode"`
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// Code is the API error code that is given in the error message.
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Code string `json:"code"`
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// Message is the server response message and is only populated when
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// explicitly referenced by the JSON server response.
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Message string `json:"message"`
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// Body is the raw response returned by the server.
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// It is often but not always JSON, depending on how the request fails.
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Body string
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// Header contains the response header fields from the server.
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Header http.Header
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// URL is the URL of the original HTTP request and will always be populated.
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URL string
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}
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// Error converts the Error type to a readable string.
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func (e *Error) Error() string {
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// If the message is empty return early.
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if e.Message == "" {
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return fmt.Sprintf("api call to %s: got HTTP response status code %d error code %q with body: %v", e.URL, e.StatusCode, e.Code, e.Body)
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}
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return fmt.Sprintf("api call to %s: got HTTP response status code %d error code %q: %s", e.URL, e.StatusCode, e.Code, e.Message)
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}
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type errorReply struct {
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Error *Error `json:"error"`
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}
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// CheckResponse returns an error (of type *Error) if the response
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// status code is not 2xx.
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func CheckResponse(res *http.Response) error {
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if res.StatusCode >= 200 && res.StatusCode <= 299 {
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return nil
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}
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slurp, err := ioutil.ReadAll(res.Body)
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if err == nil {
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jerr := new(errorReply)
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err = json.Unmarshal(slurp, jerr)
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if err == nil && jerr.Error != nil {
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if jerr.Error.StatusCode == 0 {
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jerr.Error.StatusCode = res.StatusCode
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}
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jerr.Error.Body = string(slurp)
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jerr.Error.URL = res.Request.URL.String()
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return jerr.Error
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}
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}
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return &Error{
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StatusCode: res.StatusCode,
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Body: string(slurp),
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Header: res.Header,
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}
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}
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