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Fix parsing of JSON with a UTF8 BOM in httpjson (#3267) 

(cherry picked from commit 8614445235)
This commit is contained in:
Daniel Nelson 2017-09-26 15:36:00 -07:00 committed by Daniel Nelson
parent 5b791fd2e5
commit 8e7cf0109e
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GPG Key ID: CAAD59C9444F6155
2 changed files with 21 additions and 1 deletions
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7
plugins/inputs/httpjson/httpjson.go
View File

@ -1,6 +1,7 @@
package httpjson
import (
"bytes"
"fmt"
"io/ioutil"
"net/http"
@ -15,6 +16,10 @@ import (
"github.com/influxdata/telegraf/plugins/parsers"
)
var (
utf8BOM = []byte("\xef\xbb\xbf")
)
// HttpJson struct
type HttpJson struct {
Name string
@ -170,7 +175,6 @@ func (h *HttpJson) gatherServer(
serverURL string,
) error {
resp, responseTime, err := h.sendRequest(serverURL)
if err != nil {
return err
}
@ -266,6 +270,7 @@ func (h *HttpJson) sendRequest(serverURL string) (string, float64, error) {
if err != nil {
return string(body), responseTime, err
}
body = bytes.TrimPrefix(body, utf8BOM)
// Process response
if resp.StatusCode != http.StatusOK {

15
plugins/inputs/httpjson/httpjson_test.go
View File

@ -560,3 +560,18 @@ func TestHttpJsonArray200Tags(t *testing.T) {
}
}
}
var jsonBOM = []byte("\xef\xbb\xbf[{\"value\":17}]")
// TestHttpJsonBOM tests that UTF-8 JSON with a BOM can be parsed
func TestHttpJsonBOM(t *testing.T) {
httpjson := genMockHttpJson(string(jsonBOM), 200)
for _, service := range httpjson {
if service.Name == "other_webapp" {
var acc testutil.Accumulator
err := acc.GatherError(service.Gather)
require.NoError(t, err)
}
}
}