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Add a function serialize a derivation

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This effectively duplicates the behaviour in Guix for serializing derivations,
but this uses the database representation in the Guix Data Service, rather
than the records Guix uses.
This commit is contained in:
Christopher Baines 2019-12-26 09:04:00 +00:00
parent 21e298f68c
commit a92d4d0cf2
1 changed files with 83 additions and 0 deletions
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83
guix-data-service/model/derivation.scm
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@ -24,6 +24,7 @@
fix-derivation-output-details-hash-encoding
select-derivations-by-revision-name-and-version
select-derivation-inputs-by-derivation-id
select-serialized-derivation-by-file-name
select-existing-derivations
select-derivations-by-id
select-derivations-and-build-status
@ -699,6 +700,88 @@ WHERE store_path = $1")
(map car (exec-query conn query (list store-path))))
(define (select-serialized-derivation-by-file-name conn derivation-file-name)
(define (double-quote s)
(string-append
"\"" s "\""))
(define (round-brackets-list items)
(string-append
"("
(string-join items ",")
")"))
(define (square-brackets-list items)
(string-append
"["
(string-join items ",")
"]"))
(let ((derivation (select-derivation-by-file-name conn
derivation-file-name)))
(if derivation
(let ((derivation-inputs (select-derivation-inputs-by-derivation-id
conn
(first derivation)))
(derivation-outputs (select-derivation-outputs-by-derivation-id
conn
(first derivation)))
(derivation-sources (select-derivation-sources-by-derivation-id
conn
(first derivation))))
(string-append
"Derive"
(round-brackets-list
`(;; Outputs
,(square-brackets-list
(map (match-lambda
((output-name path hash-algorithm hash recursive?)
(round-brackets-list
(list
(double-quote output-name)
(double-quote path)
(double-quote
(string-append
(if recursive? "r:" "")
hash-algorithm))
(double-quote hash)))))
derivation-outputs))
;; Inputs
,(square-brackets-list
(map (match-lambda
((file-name outputs)
(round-brackets-list
(list
(double-quote file-name)
(square-brackets-list
(map (lambda (output)
(double-quote
(assoc-ref output "output_name")))
(vector->list outputs)))))))
derivation-inputs))
;; Sources
,(square-brackets-list
(map double-quote derivation-sources))
;; Other parts
,@(match derivation
((id file-name builder args env-vars system)
(list
(double-quote system)
(double-quote builder)
(square-brackets-list
(map double-quote args))
(square-brackets-list
(map (lambda (env-var)
(round-brackets-list
(list (with-output-to-string
(lambda ()
(write (assq-ref env-var 'key))))
(with-output-to-string
(lambda ()
(write (assq-ref env-var 'value)))))))
env-vars)))))))))
#f)))
(define (insert-derivation-inputs conn derivation-id derivation-inputs)
(define (insert-into-derivation-inputs output-ids)
(string-append "INSERT INTO derivation_inputs "