Files
fn-serverless/api/server/call_logs.go
Denis Makogon 60d2ca234f Ship call logs to the user as text/plain instead of JSON (#615)
* Ship call logs to the user as text/plain instead of JSON

* Fixing swagger doc

* c.String instead of c.JSON

* Make Logs API backward compatible

* Loop over accepted MIME types

* Bump swagger API version

* Fix client build script

 previous version was producing the following "couldn't find a swagger spec"

* Logs API regression test

* Write response body without buffering

* Switch JSON and text/plain cases

* Handle Accepted content types properly

* More solid response content type handling

* Write HTTP 406 with corresponding error body

* Remove unused import

* Use handleErrorResponse
2018-01-02 16:01:22 -06:00

71 lines
1.6 KiB
Go

package server
import (
"bytes"
"io"
"net/http"
"errors"
"github.com/fnproject/fn/api"
"github.com/fnproject/fn/api/models"
"github.com/gin-gonic/gin"
"strings"
)
// note: for backward compatibility, will go away later
type callLogResponse struct {
Message string `json:"message"`
Log *models.CallLog `json:"log"`
}
func writeJSON(c *gin.Context, callID, appName string, logReader io.Reader) {
var b bytes.Buffer
b.ReadFrom(logReader)
c.JSON(http.StatusOK, callLogResponse{"Successfully loaded log",
&models.CallLog{
CallID: callID,
AppName: appName,
Log: b.String(),
}})
}
func (s *Server) handleCallLogGet(c *gin.Context) {
ctx := c.Request.Context()
appName := c.MustGet(api.AppName).(string)
callID := c.Param(api.Call)
logReader, err := s.logstore.GetLog(ctx, appName, callID)
if err != nil {
handleErrorResponse(c, err)
return
}
mimeTypes, _ := c.Request.Header["Accept"]
if len(mimeTypes) == 0 {
writeJSON(c, callID, appName, logReader)
return
}
for _, mimeType := range mimeTypes {
if strings.Contains(mimeType, "application/json") {
writeJSON(c, callID, appName, logReader)
return
}
if strings.Contains(mimeType, "text/plain") {
io.Copy(c.Writer, logReader)
return
}
if strings.Contains(mimeType, "*/*") {
writeJSON(c, callID, appName, logReader)
return
}
}
// if we've reached this point it means that Fn didn't recognize Accepted content type
handleErrorResponse(c, models.NewAPIError(http.StatusNotAcceptable,
errors.New("unable to respond within acceptable response content types")))
}