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publish: Produce a "FileSize" narinfo field when possible.

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* guix/scripts/publish.scm (narinfo-string): Add #:file-size parameter.
Produce a "FileSize" field when COMPRESSION is eq? to '%no-compression'
or when FILE-SIZE is true.
(bake-narinfo+nar): Pass #:file-size.
* tests/publish.scm ("/*.narinfo")
("/*.narinfo with properly encoded '+' sign")
("with cache"): Check for "FileSize".
This commit is contained in:
Ludovic Courtès 2017-05-01 17:24:41 +02:00
parent e93793059d
commit dff3189c7d
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GPG key ID: 090B11993D9AEBB5
2 changed files with 30 additions and 13 deletions
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guix/scripts/publish.scm
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@ -240,10 +240,12 @@ compression disabled~%"))
(define* (narinfo-string store store-path key
#:key (compression %no-compression)
(nar-path "nar"))
(nar-path "nar") file-size)
"Generate a narinfo key/value string for STORE-PATH; an exception is raised
if STORE-PATH is invalid. Produce a URL that corresponds to COMPRESSION. The
narinfo is signed with KEY. NAR-PATH specifies the prefix for nar URLs."
narinfo is signed with KEY. NAR-PATH specifies the prefix for nar URLs.
Optionally, FILE-SIZE can specify the size in bytes of the compressed NAR; it
informs the client of how much needs to be downloaded."
(let* ((path-info (query-path-info store store-path))
(compression (actual-compression store-path compression))
(url (encode-and-join-uri-path
@ -257,6 +259,8 @@ narinfo is signed with KEY. NAR-PATH specifies the prefix for nar URLs."
(hash (bytevector->nix-base32-string
(path-info-hash path-info)))
(size (path-info-nar-size path-info))
(file-size (or file-size
(and (eq? compression %no-compression) size)))
(references (string-join
(map basename (path-info-references path-info))
" "))
@ -268,10 +272,13 @@ URL: ~a
Compression: ~a
NarHash: sha256:~a
NarSize: ~d
References: ~a~%"
References: ~a~%~a"
store-path url
(compression-type compression)
hash size references))
hash size references
(if file-size
(format #f "FileSize: ~a~%" file-size)
"")))
;; Do not render a "Deriver" or "System" line if we are rendering
;; info for a derivation.
(info (if (not deriver)
@ -465,7 +472,8 @@ requested using POOL."
(display (narinfo-string store item
(%private-key)
#:nar-path nar-path
#:compression compression)
#:compression compression
#:file-size (stat:size (stat nar)))
port))))))
;; XXX: Declare the 'Guix-Compression' HTTP header, which is in fact for