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(define-module (guix-data-service comparison)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-11)
#:use-module (ice-9 vlist)
#:use-module (ice-9 match)
#:use-module (squee)
#:use-module (guix-data-service model derivation)
#:export (package-data->package-data-vhashes
package-differences-data
package-data-vhash->derivations
package-data-vhash->derivations-and-build-status
package-data-vhashes->new-packages
package-data-vhashes->removed-packages
package-data-version-changes
package-data-other-changes))
(define (package-differences-data conn base_guix_revision_id target_guix_revision_id)
(define query
"WITH base_packages AS (
SELECT packages.* FROM packages INNER JOIN guix_revision_packages ON packages.id = guix_revision_packages.package_id WHERE revision_id = $1
), target_packages AS (
SELECT packages.* FROM packages INNER JOIN guix_revision_packages ON packages.id = guix_revision_packages.package_id WHERE revision_id = $2
)
SELECT base_packages.name, base_packages.version, base_packages.package_metadata_id, base_packages.derivation_id, target_packages.name, target_packages.version, target_packages.package_metadata_id, target_packages.derivation_id
FROM base_packages
FULL OUTER JOIN target_packages ON base_packages.name = target_packages.name AND base_packages.version = target_packages.version
WHERE (base_packages.id IS NULL OR target_packages.id IS NULL OR base_packages.id != target_packages.id)
ORDER BY base_packages.name, base_packages.version, target_packages.name, target_packages.version")
(exec-query conn query (list base_guix_revision_id target_guix_revision_id)))
(define (package-data->package-data-vhashes package-data)
(define (add-data-to-vhash data vhash)
(let ((key (first data)))
(if (string-null? key)
vhash
(vhash-cons key
(drop data 1)
vhash))))
(apply values
(fold (lambda (row result)
(let-values (((base-row-part target-row-part) (split-at row 4)))
(match result
((base-package-data target-package-data)
(list (add-data-to-vhash base-row-part base-package-data)
(add-data-to-vhash target-row-part target-package-data))))))
(list vlist-null vlist-null)
package-data)))
(define (package-data-vhash->derivations conn packages-vhash)
(define (vhash->derivation-ids vhash)
(vhash-fold (lambda (key value result)
(cons (third value)
result))
'()
vhash))
(let* ((derivation-ids
(vhash->derivation-ids packages-vhash))
(derivation-data
(select-derivations-by-id conn derivation-ids)))
derivation-data))
(define (package-data-vhash->derivations-and-build-status conn packages-vhash)
(define (vhash->derivation-ids vhash)
(vhash-fold (lambda (key value result)
(cons (third value)
result))
'()
vhash))
(let* ((derivation-ids
(vhash->derivation-ids packages-vhash))
(derivation-data
(select-derivations-and-build-status-by-id conn derivation-ids)))
derivation-data))
(define (package-data-vhash->package-name-and-version-vhash vhash)
(vhash-fold (lambda (name details result)
(vhash-cons (cons name (first details))
(cdr details)
result))
vlist-null
vhash))
(define (package-data-vhashes->new-packages base-packages-vhash target-packages-vhash)
(vlist->list
(vlist-filter (match-lambda
((name . details)
(not (vhash-assoc name base-packages-vhash))))
target-packages-vhash)))
(define (package-data-vhashes->removed-packages base-packages-vhash target-packages-vhash)
(vlist->list
(vlist-filter (match-lambda
((name . details)
(not (vhash-assoc name target-packages-vhash))))
base-packages-vhash)))
(define (package-data-vhash->package-versions-vhash package-data-vhash)
(vhash-fold (lambda (name details result)
(let ((version (first details))
(known-versions (vhash-assoc name result)))
(if known-versions
(vhash-cons name
(cons version known-versions)
(vhash-delete name result))
(vhash-cons name
(list version)
result))))
vlist-null
package-data-vhash))
(define (package-data-version-changes base-packages-vhash target-packages-vhash)
(let ((base-versions (package-data-vhash->package-versions-vhash
base-packages-vhash))
(target-versions (package-data-vhash->package-versions-vhash
target-packages-vhash)))
(vhash-fold (lambda (name target-versions result)
(let ((base-versions (and=> (vhash-assoc name base-versions)
cdr)))
(if base-versions
(begin
(if (equal? base-versions target-versions)
result
`((,name . ((base . ,base-versions)
(target . ,target-versions)))
,@result)))
result)))
'()
target-versions)))
(define (package-data-other-changes base-packages-vhash target-packages-vhash)
(define base-package-details-by-name-and-version
(package-data-vhash->package-name-and-version-vhash base-packages-vhash))
(define target-package-details-by-name-and-version
(package-data-vhash->package-name-and-version-vhash target-packages-vhash))
(vhash-fold (lambda (name-and-version target-details result)
(let ((base-packages-entry
(vhash-assoc name-and-version base-package-details-by-name-and-version)))
(if base-packages-entry
(let ((base-details (cdr base-packages-entry)))
(if (equal? base-details target-details)
result
`((,name-and-version . ((base . ,base-details)
(target . ,target-details)))
,@result)))
result)))
'()
target-package-details-by-name-and-version))
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