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series_load_handler.go
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/
series_load_handler.go
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// Copyright (c) 2020 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package main
import (
"net/http"
"sync"
"github.com/m3db/m3/src/cmd/services/m3comparator/main/parser"
"github.com/m3db/m3/src/dbnode/encoding"
xhttp "github.com/m3db/m3/src/x/net/http"
"go.uber.org/zap"
)
type seriesLoadHandler interface {
getSeriesIterators(string) (encoding.SeriesIterators, error)
}
type httpSeriesLoadHandler struct {
sync.RWMutex
reader parser.SeriesReader
iterOpts parser.Options
}
var (
_ http.Handler = (*httpSeriesLoadHandler)(nil)
_ seriesLoadHandler = (*httpSeriesLoadHandler)(nil)
)
// newHTTPSeriesLoadHandler builds a handler that can load series
// to the comparator via an http endpoint.
func newHTTPSeriesLoadHandler(iterOpts parser.Options) *httpSeriesLoadHandler {
return &httpSeriesLoadHandler{
iterOpts: iterOpts,
reader: parser.NewSeriesReader(iterOpts),
}
}
func (l *httpSeriesLoadHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
logger := l.iterOpts.InstrumentOptions.Logger()
err := l.serveHTTP(r)
if err != nil {
logger.Error("unable to fetch data", zap.Error(err))
xhttp.Error(w, err, http.StatusInternalServerError)
return
}
w.WriteHeader(http.StatusOK)
}
func (l *httpSeriesLoadHandler) getSeriesIterators(
name string) (encoding.SeriesIterators, error) {
return l.reader.SeriesIterators(name)
}
func (l *httpSeriesLoadHandler) serveHTTP(r *http.Request) error {
if r.Method == http.MethodDelete {
l.reader.Clear()
return nil
}
body := r.Body
defer body.Close()
return l.reader.Load(body)
}