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simplify the tarball lock protocol #584

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Merged
Mic92 merged 1 commit into from
Mar 19, 2025
Merged

simplify the tarball lock protocol #584

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13 changes: 5 additions & 8 deletions terraform/channels.tf
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Original file line number Diff line number Diff line change
Expand Up @@ -238,14 +238,11 @@ resource "fastly_service_vcl" "channels" {
set beresp.grace = 0s;
set beresp.cacheable = false;
if (req.backend.is_origin && std.suffixof(bereq.url, "/nixexprs.tar.xz")) {
# rename prepared link header if available
if (beresp.http.x-amz-meta-link) {
set beresp.http.link = beresp.http.x-amz-meta-link;
unset beresp.http.x-amz-meta-link;
# otherwise, use fallback that contains no flake attributes (e.g. rev)
} else {
set beresp.http.link = "<" + beresp.http.location + {">; rel="immutable""};
}
# pass redirect location into special flake "immutable tarball" header
set beresp.http.link = "<" + beresp.http.location + {">; rel="immutable""};
# clear query string from redirect destination as precaution in case
# legacy consumers can't handle flake attributes like "?rev=" in it
set beresp.http.location = querystring.remove(beresp.http.location);
}
return (pass);
}
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