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9bd346e250
This ensures that child contexts are passed around between the handlers so that traces show the call hierarchy correctly.
51 lines
1.6 KiB
Go
51 lines
1.6 KiB
Go
package corehttp
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import (
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"bytes"
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"context"
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"io/ioutil"
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"net/http"
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"time"
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"github.com/ipfs/go-ipfs/tracing"
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ipath "github.com/ipfs/interface-go-ipfs-core/path"
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"go.opentelemetry.io/otel/attribute"
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"go.opentelemetry.io/otel/trace"
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)
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// serveRawBlock returns bytes behind a raw block
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func (i *gatewayHandler) serveRawBlock(ctx context.Context, w http.ResponseWriter, r *http.Request, resolvedPath ipath.Resolved, contentPath ipath.Path, begin time.Time) {
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ctx, span := tracing.Span(ctx, "Gateway", "ServeRawBlock", trace.WithAttributes(attribute.String("path", resolvedPath.String())))
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defer span.End()
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blockCid := resolvedPath.Cid()
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blockReader, err := i.api.Block().Get(ctx, resolvedPath)
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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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// ServeContent will take care of
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// If-None-Match+Etag, Content-Length and range requests
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_, dataSent, _ := ServeContent(w, r, name, modtime, content)
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if dataSent {
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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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}
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