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;;; Guix Data Service -- Information about Guix over time
;;; Copyright © 2019 Christopher Baines <mail@cbaines.net>
;;;
;;; This program is free software: you can redistribute it and/or
;;; modify it under the terms of the GNU Affero General Public License
;;; as published by the Free Software Foundation, either version 3 of
;;; the License, or (at your option) any later version.
;;;
;;; This program is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;;; Affero General Public License for more details.
;;;
;;; You should have received a copy of the GNU Affero General Public
;;; License along with this program. If not, see
;;; <http://www.gnu.org/licenses/>.
(define-module (guix-data-service web compare controller)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-11)
#:use-module (ice-9 match)
#:use-module (guix-data-service web util)
#:use-module (guix-data-service web render)
#:use-module (guix-data-service web query-parameters)
#:use-module (guix-data-service model utils)
#:use-module (guix-data-service comparison)
#:use-module (guix-data-service model guix-revision)
#:use-module (guix-data-service model derivation)
#:use-module (guix-data-service model build-status)
#:use-module (guix-data-service web compare html)
#:export (compare-controller))
(define cache-control-default-max-age
(* 60 60 24)) ; One day
(define http-headers-for-unchanging-content
`((cache-control
. (public
(max-age . ,cache-control-default-max-age)))))
(define (parse-system s)
s)
(define (parse-build-status s)
s)
(define (parse-commit conn)
(lambda (s)
(if (guix-commit-exists? conn s)
s
(make-invalid-query-parameter
s "unknown commit"))))
(define (compare-controller request
method-and-path-components
mime-types
body
conn)
(match method-and-path-components
(('GET "compare")
(let* ((parsed-query-parameters
(parse-query-parameters
request
`((base_commit ,(parse-commit conn) #:required)
(target_commit ,(parse-commit conn) #:required)))))
(render-compare mime-types
conn
parsed-query-parameters)))
(('GET "compare-by-datetime")
(let* ((parsed-query-parameters
(parse-query-parameters
request
`((base_branch ,identity #:required)
(base_datetime ,parse-datetime #:required)
(target_branch ,identity #:required)
(target_datetime ,parse-datetime #:required)))))
(render-compare-by-datetime mime-types
conn
parsed-query-parameters)))
(('GET "compare" "derivations")
(let* ((parsed-query-parameters
(parse-query-parameters
request
`((base_commit ,(parse-commit conn) #:required)
(target_commit ,(parse-commit conn) #:required)
(system ,parse-system #:multi-value)
(target ,parse-system #:multi-value)
(build_status ,parse-build-status #:multi-value)))))
(render-compare/derivations mime-types
conn
parsed-query-parameters)))
(('GET "compare-by-datetime" "derivations")
(let* ((parsed-query-parameters
(guard-against-mutually-exclusive-query-parameters
(parse-query-parameters
request
`((base_branch ,identity #:required)
(base_datetime ,parse-datetime #:required)
(target_branch ,identity #:required)
(target_datetime ,parse-datetime #:required)
(system ,parse-system #:multi-value)
(target ,parse-system #:multi-value)
(build_status ,parse-build-status #:multi-value)))
'((base_commit base_datetime)
(target_commit target_datetime)))))
(render-compare-by-datetime/derivations mime-types
conn
parsed-query-parameters)))
(('GET "compare" "packages")
(let* ((parsed-query-parameters
(parse-query-parameters
request
`((base_commit ,(parse-commit conn) #:required)
(target_commit ,(parse-commit conn) #:required)))))
(render-compare/packages mime-types
conn
parsed-query-parameters)))
(_ #f)))
(define (render-compare mime-types
conn
query-parameters)
(if (any-invalid-query-parameters? query-parameters)
(case (most-appropriate-mime-type
'(application/json text/html)
mime-types)
((application/json)
(render-json
'((error . "invalid query"))))
(else
(render-html
#:sxml (compare-invalid-parameters
query-parameters
(match (assq-ref query-parameters 'base_commit)
(($ <invalid-query-parameter> value)
(select-job-for-commit conn value))
(_ #f))
(match (assq-ref query-parameters 'target_commit)
(($ <invalid-query-parameter> value)
(select-job-for-commit conn value))
(_ #f))))))
(let ((base-revision-id (commit->revision-id
conn
(assq-ref query-parameters 'base_commit)))
(target-revision-id (commit->revision-id
conn
(assq-ref query-parameters 'target_commit))))
(let-values
(((base-packages-vhash target-packages-vhash)
(package-data->package-data-vhashes
(package-differences-data conn
base-revision-id
target-revision-id))))
(let* ((new-packages
(package-data-vhashes->new-packages base-packages-vhash
target-packages-vhash))
(removed-packages
(package-data-vhashes->removed-packages base-packages-vhash
target-packages-vhash))
(version-changes
(package-data-version-changes base-packages-vhash
target-packages-vhash))
(lint-warnings-data
(group-list-by-first-n-fields
2
(lint-warning-differences-data conn
base-revision-id
target-revision-id))))
(case (most-appropriate-mime-type
'(application/json text/html)
mime-types)
((application/json)
(render-json
`((new-packages . ,(list->vector new-packages))
(removed-packages . ,(list->vector removed-packages))
(version-changes . ,(list->vector
(map
(match-lambda
((name data ...)
`((name . ,name)
,@data)))
version-changes))))
#:extra-headers http-headers-for-unchanging-content))
(else
(render-html
#:sxml (compare query-parameters
(guix-revisions-cgit-url-bases
conn
(list base-revision-id
target-revision-id))
new-packages
removed-packages
version-changes
lint-warnings-data)
#:extra-headers http-headers-for-unchanging-content))))))))
(define (render-compare-by-datetime mime-types
conn
query-parameters)
(if (any-invalid-query-parameters? query-parameters)
(case (most-appropriate-mime-type
'(application/json text/html)
mime-types)
((application/json)
(render-json
'((error . "invalid query"))))
(else
(render-html
#:sxml (compare-invalid-parameters
query-parameters
(match (assq-ref query-parameters 'base_commit)
(($ <invalid-query-parameter> value)
(select-job-for-commit conn value))
(_ #f))
(match (assq-ref query-parameters 'target_commit)
(($ <invalid-query-parameter> value)
(select-job-for-commit conn value))
(_ #f))))))
(let ((base-branch (assq-ref query-parameters 'base_branch))
(base-datetime (assq-ref query-parameters 'base_datetime))
(target-branch (assq-ref query-parameters 'target_branch))
(target-datetime (assq-ref query-parameters 'target_datetime)))
(let* ((base-revision-details
(select-guix-revision-for-branch-and-datetime conn
base-branch
base-datetime))
(base-revision-id
(first base-revision-details))
(target-revision-details
(select-guix-revision-for-branch-and-datetime conn
target-branch
target-datetime))
(target-revision-id
(first target-revision-details)))
(let-values
(((base-packages-vhash target-packages-vhash)
(package-data->package-data-vhashes
(package-differences-data conn
base-revision-id
target-revision-id))))
(let* ((new-packages
(package-data-vhashes->new-packages base-packages-vhash
target-packages-vhash))
(removed-packages
(package-data-vhashes->removed-packages base-packages-vhash
target-packages-vhash))
(version-changes
(package-data-version-changes base-packages-vhash
target-packages-vhash))
(lint-warnings-data
(group-list-by-first-n-fields
2
(lint-warning-differences-data conn
base-revision-id
target-revision-id))))
(case (most-appropriate-mime-type
'(application/json text/html)
mime-types)
((application/json)
(render-json
`((new-packages . ,(list->vector new-packages))
(removed-packages . ,(list->vector removed-packages))
(version-changes . ,(list->vector
(map
(match-lambda
((name data ...)
`((name . ,name)
,@data)))
version-changes))))
#:extra-headers http-headers-for-unchanging-content))
(else
(render-html
#:sxml (compare `(,@query-parameters
(base_commit . ,(second base-revision-details))
(target_commit . ,(second target-revision-details)))
(guix-revisions-cgit-url-bases
conn
(list base-revision-id
target-revision-id))
new-packages
removed-packages
version-changes
lint-warnings-data)
#:extra-headers http-headers-for-unchanging-content)))))))))
(define (render-compare/derivations mime-types
conn
query-parameters)
(define (derivations->alist derivations)
(map (match-lambda
((file-name system target buildstatus)
`((file_name . ,file-name)
(system . ,system)
(target . ,target)
(build_status . ,(if (string=? buildstatus "")
"unknown"
buildstatus)))))
derivations))
(if (any-invalid-query-parameters? query-parameters)
(case (most-appropriate-mime-type
'(application/json text/html)
mime-types)
((application/json)
(render-json
'((error . "invalid query"))))
(else
(render-html
#:sxml (compare/derivations
query-parameters
(valid-systems conn)
build-status-strings
'()))))
(let ((base-commit (assq-ref query-parameters 'base_commit))
(target-commit (assq-ref query-parameters 'target_commit))
(systems (assq-ref query-parameters 'system))
(targets (assq-ref query-parameters 'target))
(build-statuses (assq-ref query-parameters 'build_status)))
(let*
((data
(package-differences-data conn
(commit->revision-id conn base-commit)
(commit->revision-id conn target-commit)
#:systems systems
#:targets targets))
(names-and-versions
(package-data->names-and-versions data)))
(let-values
(((base-packages-vhash target-packages-vhash)
(package-data->package-data-vhashes data)))
(let ((derivation-changes
(package-data-derivation-changes names-and-versions
base-packages-vhash
target-packages-vhash)))
(case (most-appropriate-mime-type
'(application/json text/html)
mime-types)
((application/json)
(render-json
derivation-changes
#:extra-headers http-headers-for-unchanging-content))
(else
(render-html
#:sxml (compare/derivations
query-parameters
(valid-systems conn)
build-status-strings
derivation-changes)
#:extra-headers http-headers-for-unchanging-content)))))))))
(define (render-compare-by-datetime/derivations mime-types
conn
query-parameters)
(define (derivations->alist derivations)
(map (match-lambda
((file-name system target buildstatus)
`((file_name . ,file-name)
(system . ,system)
(target . ,target)
(build_status . ,(if (string=? buildstatus "")
"unknown"
buildstatus)))))
derivations))
(if (any-invalid-query-parameters? query-parameters)
(case (most-appropriate-mime-type
'(application/json text/html)
mime-types)
((application/json)
(render-json
'((error . "invalid query"))))
(else
(render-html
#:sxml (compare-by-datetime/derivations
query-parameters
(valid-systems conn)
build-status-strings
'()))))
(let ((base-branch (assq-ref query-parameters 'base_branch))
(base-datetime (assq-ref query-parameters 'base_datetime))
(target-branch (assq-ref query-parameters 'target_branch))
(target-datetime (assq-ref query-parameters 'target_datetime))
(systems (assq-ref query-parameters 'system))
(targets (assq-ref query-parameters 'target))
(build-statuses (assq-ref query-parameters 'build_status)))
(let*
((base-revision-details
(select-guix-revision-for-branch-and-datetime conn
base-branch
base-datetime))
(target-revision-details
(select-guix-revision-for-branch-and-datetime conn
target-branch
target-datetime))
(data
(package-differences-data conn
(first base-revision-details)
(first target-revision-details)
#:systems systems
#:targets targets))
(names-and-versions
(package-data->names-and-versions data)))
(let-values
(((base-packages-vhash target-packages-vhash)
(package-data->package-data-vhashes data)))
(let ((derivation-changes
(package-data-derivation-changes names-and-versions
base-packages-vhash
target-packages-vhash)))
(case (most-appropriate-mime-type
'(application/json text/html)
mime-types)
((application/json)
(render-json
derivation-changes
#:extra-headers http-headers-for-unchanging-content))
(else
(render-html
#:sxml (compare-by-datetime/derivations
query-parameters
(valid-systems conn)
build-status-strings
base-revision-details
target-revision-details
derivation-changes)
#:extra-headers http-headers-for-unchanging-content)))))))))
(define (render-compare/packages mime-types
conn
query-parameters)
(define (package-data-vhash->json vh)
(delete-duplicates
(vhash-fold (lambda (name data result)
(cons `((name . ,name)
(version . ,(car data)))
result))
'()
vh)))
(if (any-invalid-query-parameters? query-parameters)
(case (most-appropriate-mime-type
'(application/json text/html)
mime-types)
((application/json)
(render-json
'((error . "invalid query"))))
(else
(render-html
#:sxml (compare-invalid-parameters
query-parameters
(match (assq-ref query-parameters 'base_commit)
(($ <invalid-query-parameter> value)
(select-job-for-commit conn value))
(_ #f))
(match (assq-ref query-parameters 'target_commit)
(($ <invalid-query-parameter> value)
(select-job-for-commit conn value))
(_ #f))))))
(let ((base-commit (assq-ref query-parameters 'base_commit))
(target-commit (assq-ref query-parameters 'target_commit)))
(let ((base-revision-id (commit->revision-id conn base-commit))
(target-revision-id (commit->revision-id conn target-commit)))
(let-values
(((base-packages-vhash target-packages-vhash)
(package-data->package-data-vhashes
(package-differences-data conn
base-revision-id
target-revision-id))))
(case (most-appropriate-mime-type
'(application/json text/html)
mime-types)
((application/json)
(render-json
`((base
. ((commit . ,base-commit)
(packages . ,(list->vector
(package-data-vhash->json base-packages-vhash)))))
(target
. ((commit . ,target-commit)
(packages . ,(list->vector
(package-data-vhash->json target-packages-vhash))))))
#:extra-headers http-headers-for-unchanging-content))
(else
(render-html
#:sxml (compare/packages
query-parameters
base-packages-vhash
target-packages-vhash)
#:extra-headers http-headers-for-unchanging-content))))))))
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