// SetWriteConsistency sets cluster consistency level
func (c *CommandLine) SetWriteConsistency(cmd string) {
// Remove the "consistency" keyword if it exists
cmd = strings.TrimSpace(strings.Replace(cmd, "consistency", "", -1))
// normalize cmd
cmd = strings.ToLower(cmd)
_, err := models.ParseConsistencyLevel(cmd)
if err != nil {
fmt.Printf("Unknown consistency level %q. Please use any, one, quorum, or all.\n", cmd)
return
}
c.WriteConsistency = cmd
}
// serveWrite receives incoming series data in line protocol format and writes it to the database.
func (h *Handler) serveWrite(w http.ResponseWriter, r *http.Request, user *meta.UserInfo) {
atomic.AddInt64(&h.stats.WriteRequests, 1)
atomic.AddInt64(&h.stats.ActiveWriteRequests, 1)
defer func(start time.Time) {
atomic.AddInt64(&h.stats.ActiveWriteRequests, -1)
atomic.AddInt64(&h.stats.WriteRequestDuration, time.Since(start).Nanoseconds())
}(time.Now())
database := r.URL.Query().Get("db")
if database == "" {
h.resultError(w, influxql.Result{Err: fmt.Errorf("database is required")}, http.StatusBadRequest)
return
}
if di := h.MetaClient.Database(database); di == nil {
h.resultError(w, influxql.Result{Err: fmt.Errorf("database not found: %q", database)}, http.StatusNotFound)
return
}
if h.Config.AuthEnabled && user == nil {
h.resultError(w, influxql.Result{Err: fmt.Errorf("user is required to write to database %q", database)}, http.StatusUnauthorized)
return
}
if h.Config.AuthEnabled {
if err := h.WriteAuthorizer.AuthorizeWrite(user.Name, database); err != nil {
h.resultError(w, influxql.Result{Err: fmt.Errorf("%q user is not authorized to write to database %q", user.Name, database)}, http.StatusUnauthorized)
return
}
}
// Handle gzip decoding of the body
body := r.Body
if r.Header.Get("Content-Encoding") == "gzip" {
b, err := gzip.NewReader(r.Body)
if err != nil {
h.resultError(w, influxql.Result{Err: err}, http.StatusBadRequest)
return
}
defer b.Close()
body = b
}
var bs []byte
if clStr := r.Header.Get("Content-Length"); clStr != "" {
if length, err := strconv.Atoi(clStr); err == nil {
// This will just be an initial hint for the gzip reader, as the
// bytes.Buffer will grow as needed when ReadFrom is called
bs = make([]byte, 0, length)
}
}
buf := bytes.NewBuffer(bs)
_, err := buf.ReadFrom(body)
if err != nil {
if h.Config.WriteTracing {
h.Logger.Print("Write handler unable to read bytes from request body")
}
h.resultError(w, influxql.Result{Err: err}, http.StatusBadRequest)
return
}
atomic.AddInt64(&h.stats.WriteRequestBytesReceived, int64(buf.Len()))
if h.Config.WriteTracing {
h.Logger.Printf("Write body received by handler: %s", buf.Bytes())
}
points, parseError := models.ParsePointsWithPrecision(buf.Bytes(), time.Now().UTC(), r.URL.Query().Get("precision"))
// Not points parsed correctly so return the error now
if parseError != nil && len(points) == 0 {
if parseError.Error() == "EOF" {
h.writeHeader(w, http.StatusOK)
return
}
h.resultError(w, influxql.Result{Err: parseError}, http.StatusBadRequest)
return
}
// Determine required consistency level.
level := r.URL.Query().Get("consistency")
consistency := models.ConsistencyLevelOne
if level != "" {
var err error
consistency, err = models.ParseConsistencyLevel(level)
if err != nil {
h.resultError(w, influxql.Result{Err: err}, http.StatusBadRequest)
return
}
}
// Write points.
if err := h.PointsWriter.WritePoints(database, r.URL.Query().Get("rp"), consistency, points); influxdb.IsClientError(err) {
atomic.AddInt64(&h.stats.PointsWrittenFail, int64(len(points)))
h.resultError(w, influxql.Result{Err: err}, http.StatusBadRequest)
return
} else if err != nil {
atomic.AddInt64(&h.stats.PointsWrittenFail, int64(len(points)))
h.resultError(w, influxql.Result{Err: err}, http.StatusInternalServerError)
return
} else if parseError != nil {
// We wrote some of the points
atomic.AddInt64(&h.stats.PointsWrittenOK, int64(len(points)))
// The other points failed to parse which means the client sent invalid line protocol. We return a 400
// response code as well as the lines that failed to parse.
h.resultError(w, influxql.Result{Err: fmt.Errorf("partial write:\n%v", parseError)}, http.StatusBadRequest)
return
}
atomic.AddInt64(&h.stats.PointsWrittenOK, int64(len(points)))
h.writeHeader(w, http.StatusNoContent)
}