diff options
Diffstat (limited to 'guix/scripts/challenge.scm')
| -rw-r--r-- | guix/scripts/challenge.scm | 156 |
1 files changed, 149 insertions, 7 deletions
diff --git a/guix/scripts/challenge.scm b/guix/scripts/challenge.scm index aabb2ee549..277eec9a5d 100644 --- a/guix/scripts/challenge.scm +++ b/guix/scripts/challenge.scm @@ -25,17 +25,23 @@ #:use-module (guix monads) #:use-module (guix base32) #:use-module (guix packages) + #:use-module (guix progress) #:use-module (guix serialization) #:use-module (guix scripts substitute) #:use-module (rnrs bytevectors) + #:autoload (guix http-client) (http-fetch) + #:use-module ((guix build syscalls) #:select (terminal-columns)) + #:use-module (gcrypt hash) #:use-module (srfi srfi-1) #:use-module (srfi srfi-9) + #:use-module (srfi srfi-11) #:use-module (srfi srfi-26) #:use-module (srfi srfi-34) #:use-module (srfi srfi-37) #:use-module (ice-9 match) #:use-module (ice-9 vlist) #:use-module (ice-9 format) + #:use-module (ice-9 ftw) #:use-module (web uri) #:export (compare-contents @@ -49,6 +55,8 @@ comparison-report-mismatch? comparison-report-inconclusive? + differing-files + guix-challenge)) ;;; Commentary: @@ -179,13 +187,128 @@ taken since we do not import the archives." items local)))) + +;;; +;;; Reporting. +;;; + +(define dump-port* ;FIXME: deduplicate + (@@ (guix serialization) dump)) + +(define (port-sha256* port size) + ;; Like 'port-sha256', but limited to SIZE bytes. + (let-values (((out get) (open-sha256-port))) + (dump-port* port out size) + (close-port out) + (get))) + +(define (archive-contents port) + "Return a list representing the files contained in the nar read from PORT." + (fold-archive (lambda (file type contents result) + (match type + ((or 'regular 'executable) + (match contents + ((port . size) + (cons `(,file ,type ,(port-sha256* port size)) + result)))) + ('directory result) + ('symlink + (cons `(,file ,type ,contents) result)))) + '() + port + "")) + +(define (store-item-contents item) + "Return a list of files and contents for ITEM in the same format as +'archive-contents'." + (file-system-fold (const #t) ;enter? + (lambda (file stat result) ;leaf + (define short + (string-drop file (string-length item))) + + (match (stat:type stat) + ('regular + (let ((size (stat:size stat)) + (type (if (zero? (logand (stat:mode stat) + #o100)) + 'regular + 'executable))) + (cons `(,short ,type + ,(call-with-input-file file + (cut port-sha256* <> size))) + result))) + ('symlink + (cons `(,short symlink ,(readlink file)) + result)))) + (lambda (directory stat result) result) ;down + (lambda (directory stat result) result) ;up + (lambda (file stat result) result) ;skip + (lambda (file stat errno result) result) ;error + '() + item + lstat)) + +(define (narinfo-contents narinfo) + "Fetch the nar described by NARINFO and return a list representing the file +it contains." + (let*-values (((uri compression size) + (narinfo-best-uri narinfo)) + ((port response) + (http-fetch uri))) + (define reporter + (progress-reporter/file (narinfo-path narinfo) size + #:abbreviation (const (uri-host uri)))) + + (define result + (call-with-decompressed-port (string->symbol compression) + (progress-report-port reporter port) + archive-contents)) + + (close-port port) + (erase-current-line (current-output-port)) + result)) + +(define (differing-files comparison-report) + "Return a list of files that differ among the nars and possibly the local +store item specified in COMPARISON-REPORT." + (define contents + (map narinfo-contents + (comparison-report-narinfos comparison-report))) + + (define local-contents + (and (comparison-report-local-sha256 comparison-report) + (store-item-contents (comparison-report-item comparison-report)))) + + (match (apply lset-difference equal? + (take (delete-duplicates + (if local-contents + (cons local-contents contents) + contents)) + 2)) + (((files _ ...) ...) + files))) + +(define (report-differing-files comparison-report) + "Report differences among the nars and possibly the local store item +specified in COMPARISON-REPORT." + (match (differing-files comparison-report) + (() + #t) + ((files ...) + (format #t (N_ " differing file:~%" + " differing files:~%" + (length files))) + (format #t "~{ ~a~%~}" files)))) + (define* (summarize-report comparison-report #:key + (report-differences (const #f)) (hash->string bytevector->nix-base32-string) verbose?) - "Write to the current error port a summary of REPORT, a <comparison-report> -object. When VERBOSE?, display matches in addition to mismatches and -inconclusive reports." + "Write to the current error port a summary of COMPARISON-REPORT, a +<comparison-report> object. When VERBOSE?, display matches in addition to +mismatches and inconclusive reports. Upon mismatch, call REPORT-DIFFERENCES +with COMPARISON-REPORT." (define (report-hashes item local narinfos) (if local (report (G_ " local hash: ~a~%") (hash->string local)) @@ -200,7 +323,8 @@ inconclusive reports." (match comparison-report (($ <comparison-report> item 'mismatch local (narinfos ...)) (report (G_ "~a contents differ:~%") item) - (report-hashes item local narinfos)) + (report-hashes item local narinfos) + (report-differences comparison-report)) (($ <comparison-report> item 'inconclusive #f narinfos) (warning (G_ "could not challenge '~a': no local build~%") item)) (($ <comparison-report> item 'inconclusive locals ()) @@ -237,6 +361,8 @@ Challenge the substitutes for PACKAGE... provided by one or more servers.\n")) compare build results with those at URLS")) (display (G_ " -v, --verbose show details about successful comparisons")) + (display (G_ " + --diff=MODE show differences according to MODE")) (newline) (display (G_ " -h, --help display this help and exit")) @@ -254,6 +380,18 @@ Challenge the substitutes for PACKAGE... provided by one or more servers.\n")) (lambda args (show-version-and-exit "guix challenge"))) + (option '("diff") #t #f + (lambda (opt name arg result . rest) + (define mode + (match arg + ("none" (const #t)) + ("simple" report-differing-files) + (_ (leave (G_ "~a: unknown diff mode~%") arg)))) + + (apply values + (alist-cons 'difference-report mode result) + rest))) + (option '("substitute-urls") #t #f (lambda (opt name arg result . rest) (apply values @@ -269,7 +407,8 @@ Challenge the substitutes for PACKAGE... provided by one or more servers.\n")) (define %default-options `((system . ,(%current-system)) - (substitute-urls . ,%default-substitute-urls))) + (substitute-urls . ,%default-substitute-urls) + (difference-report . ,report-differing-files))) ;;; @@ -286,12 +425,14 @@ Challenge the substitutes for PACKAGE... provided by one or more servers.\n")) opts)) (system (assoc-ref opts 'system)) (urls (assoc-ref opts 'substitute-urls)) + (diff (assoc-ref opts 'difference-report)) (verbose? (assoc-ref opts 'verbose?))) (leave-on-EPIPE (with-store store ;; Disable grafts since substitute servers normally provide only ;; ungrafted stuff. - (parameterize ((%graft? #f)) + (parameterize ((%graft? #f) + (current-terminal-columns (terminal-columns))) (let ((files (match files (() (filter (cut locally-built? store <>) @@ -305,7 +446,8 @@ Challenge the substitutes for PACKAGE... provided by one or more servers.\n")) (mlet* %store-monad ((items (mapm %store-monad ensure-store-item files)) (reports (compare-contents items urls))) - (for-each (cut summarize-report <> #:verbose? verbose?) + (for-each (cut summarize-report <> #:verbose? verbose? + #:report-differences diff) reports) (report "\n") (summarize-report-list reports) |