123 lines
3.2 KiB
Go
123 lines
3.2 KiB
Go
package lfsapi
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import (
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"context"
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"fmt"
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"io"
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"net/http"
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"net/http/httputil"
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"time"
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)
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type httpTransferStats struct {
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HeaderSize int
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BodySize int64
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Start time.Time
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Stop time.Time
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}
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type httpTransfer struct {
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Key string
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requestStats *httpTransferStats
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responseStats *httpTransferStats
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}
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type statsContextKey string
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const httpStatsKey = statsContextKey("http")
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func (c *Client) LogHTTPStats(w io.WriteCloser) {
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fmt.Fprintf(w, "concurrent=%d time=%d version=%s\n", c.ConcurrentTransfers, time.Now().Unix(), UserAgent)
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c.httpLogger = w
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}
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// LogStats is intended to be called after all HTTP operations for the
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// commmand have finished. It dumps k/v logs, one line per httpTransfer into
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// a log file with the current timestamp.
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//
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// DEPRECATED: Call LogHTTPStats() before the first HTTP request.
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func (c *Client) LogStats(out io.Writer) {}
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// LogRequest tells the client to log the request's stats to the http log
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// after the response body has been read.
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func (c *Client) LogRequest(r *http.Request, reqKey string) *http.Request {
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ctx := context.WithValue(r.Context(), httpStatsKey, reqKey)
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return r.WithContext(ctx)
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}
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// LogResponse sends the current response stats to the http log.
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//
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// DEPRECATED: Use LogRequest() instead.
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func (c *Client) LogResponse(key string, res *http.Response) {}
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func (c *Client) startResponseStats(res *http.Response, start time.Time) {
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if c.httpLogger == nil {
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return
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}
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reqHeaderSize := 0
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resHeaderSize := 0
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if dump, err := httputil.DumpRequest(res.Request, false); err == nil {
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reqHeaderSize = len(dump)
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}
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if dump, err := httputil.DumpResponse(res, false); err == nil {
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resHeaderSize = len(dump)
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}
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reqstats := &httpTransferStats{HeaderSize: reqHeaderSize, BodySize: res.Request.ContentLength}
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// Response body size cannot be figured until it is read. Do not rely on a Content-Length
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// header because it may not exist or be -1 in the case of chunked responses.
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resstats := &httpTransferStats{HeaderSize: resHeaderSize, Start: start}
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t := &httpTransfer{requestStats: reqstats, responseStats: resstats}
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if v := res.Request.Context().Value(httpStatsKey); v != nil {
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t.Key = v.(string)
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} else {
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t.Key = "none"
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}
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c.transferMu.Lock()
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if c.transfers == nil {
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c.transfers = make(map[*http.Response]*httpTransfer)
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}
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c.transfers[res] = t
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c.transferMu.Unlock()
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}
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func (c *Client) finishResponseStats(res *http.Response, bodySize int64) {
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if res == nil || c.httpLogger == nil {
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return
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}
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c.transferMu.Lock()
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defer c.transferMu.Unlock()
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if c.transfers == nil {
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return
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}
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if transfer, ok := c.transfers[res]; ok {
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transfer.responseStats.BodySize = bodySize
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transfer.responseStats.Stop = time.Now()
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if c.httpLogger != nil {
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writeHTTPStats(c.httpLogger, res, transfer)
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}
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delete(c.transfers, res)
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}
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}
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func writeHTTPStats(w io.Writer, res *http.Response, t *httpTransfer) {
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fmt.Fprintf(w, "key=%s reqheader=%d reqbody=%d resheader=%d resbody=%d restime=%d status=%d url=%s\n",
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t.Key,
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t.requestStats.HeaderSize,
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t.requestStats.BodySize,
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t.responseStats.HeaderSize,
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t.responseStats.BodySize,
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t.responseStats.Stop.Sub(t.responseStats.Start).Nanoseconds(),
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res.StatusCode,
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res.Request.URL,
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)
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}
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