clawbot
880845f38c
check / check (push) Canceled after 0s
A cached image was served until eviction, so a change at the same URL was never picked up. After 24 hours a request checks the source with upstream, sending its stored ETag and Last-Modified. A 304 renews it with no download or conversion. New bytes replace it, and older variants are converted again. A failed check serves the cached image and puts the URL in the negative cache. Images not checked for 30 days are evicted. Variant rows keep the source's ETag and Last-Modified, so a variant whose source was evicted is checked the same way. A variant file's modification time is its source's check time when it was made or renewed, so a hit reads no database row. Model: opus-5-5
52 lines
1.2 KiB
Go
52 lines
1.2 KiB
Go
package httpfetcher
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import (
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"context"
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"io"
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"net/http"
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"net/http/httptest"
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"testing"
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"github.com/go-chi/chi/v5/middleware"
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"sneak.berlin/go/pixa/internal/imagerequest"
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)
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// TestFetchSendsRequestID verifies that a fetch sends the ID of the request
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// it serves, which the RequestID middleware stores in the request context,
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// to the upstream host as X-Request-Id, so the fetch can be found in that
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// host's logs.
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func TestFetchSendsRequestID(t *testing.T) {
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t.Parallel()
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const requestID = "test-request-id"
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received := make(chan string, 1)
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srv := httptest.NewServer(http.HandlerFunc(
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func(w http.ResponseWriter, r *http.Request) {
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received <- r.Header.Get("X-Request-Id")
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w.Header().Set("Content-Type", imagerequest.FormatJPEG.MIMEType())
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_, _ = io.WriteString(w, imagePayload)
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}))
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t.Cleanup(srv.Close)
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f, _ := newServerFetcher(t, srv, nil)
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ctx := context.WithValue(testContext(t), middleware.RequestIDKey, requestID)
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res, err := f.Fetch(ctx, upstreamSource("/image"), "", "")
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if err != nil {
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t.Fatalf("Fetch() error = %v", err)
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}
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_ = res.Content.Close()
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got := <-received
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t.Logf("upstream received X-Request-Id %q", got)
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if got != requestID {
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t.Errorf("upstream X-Request-Id = %q, want %q", got, requestID)
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}
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}
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