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* feat(gw): response type histogram metrics - response-type agnostic firstContentBlockGetMetric which counts the latency til the first content block. - car/block/file/gen-dir-index duration histogram metrics that show how long each response type takes * docs: improve metrics descriptions * feat: more gw histogram buckets 0.05, 0.1, 0.25, 0.5, 1, 2, 5, 10, 30, 60 secs as suggested in reviews at https://github.com/ipfs/go-ipfs/pull/8443 Co-authored-by: Marcin Rataj <lidel@lidel.org> Co-authored-by: Gus Eggert <gus@gus.dev>
43 lines
1.3 KiB
Go
43 lines
1.3 KiB
Go
package corehttp
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import (
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"bytes"
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"io/ioutil"
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"net/http"
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"time"
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cid "github.com/ipfs/go-cid"
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ipath "github.com/ipfs/interface-go-ipfs-core/path"
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)
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// serveRawBlock returns bytes behind a raw block
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func (i *gatewayHandler) serveRawBlock(w http.ResponseWriter, r *http.Request, blockCid cid.Cid, contentPath ipath.Path, begin time.Time) {
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blockReader, err := i.api.Block().Get(r.Context(), contentPath)
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if err != nil {
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webError(w, "ipfs block get "+blockCid.String(), err, http.StatusInternalServerError)
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return
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}
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block, err := ioutil.ReadAll(blockReader)
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if err != nil {
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webError(w, "ipfs block get "+blockCid.String(), err, http.StatusInternalServerError)
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return
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}
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content := bytes.NewReader(block)
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// Set Content-Disposition
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name := blockCid.String() + ".bin"
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setContentDispositionHeader(w, name, "attachment")
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// Set remaining headers
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modtime := addCacheControlHeaders(w, r, contentPath, blockCid)
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w.Header().Set("Content-Type", "application/vnd.ipld.raw")
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w.Header().Set("X-Content-Type-Options", "nosniff") // no funny business in the browsers :^)
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// Done: http.ServeContent will take care of
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// If-None-Match+Etag, Content-Length and range requests
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http.ServeContent(w, r, name, modtime, content)
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// Update metrics
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i.rawBlockGetMetric.WithLabelValues(contentPath.Namespace()).Observe(time.Since(begin).Seconds())
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}
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