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| author | Arun Isaac | 2023-01-05 15:15:11 +0000 |
|---|---|---|
| committer | Arun Isaac | 2023-01-05 15:15:11 +0000 |
| commit | eb7141b9f8ce0043098bba19e490418ca27077f6 (patch) | |
| tree | 0de6b375f331c40dfd2ca5c1ed9e5b5491c87509 | |
| parent | aaefd56475fac0bdfa9717bd83a8dddf854e8d67 (diff) | |
| download | gn-machines-eb7141b9f8ce0043098bba19e490418ca27077f6.tar.gz | |
Create custom 502 error page for CD.
This 502 error page is more informative than a generic "Bad Gateway" error message. It tells the user that the CD is down but not the entire container itself. * genenetwork-development.scm: Import guile-lib from (gnu packages guile-xyz). (%ci-domain): New variable. (cd-error-pages-gexp): New function. (development-server-reverse-proxy-server-block): Use (cd-error-pages-gexp) to construct error pages. (laminar-reverse-proxy-server-block): Use %ci-domain.
| -rw-r--r-- | genenetwork-development.scm | 56 |
1 files changed, 53 insertions, 3 deletions
diff --git a/genenetwork-development.scm b/genenetwork-development.scm index 88dca36..86fc1df 100644 --- a/genenetwork-development.scm +++ b/genenetwork-development.scm @@ -35,7 +35,7 @@ ((gnu packages gnupg) #:select (guile-gcrypt)) ((gnu packages graphviz) #:select (graphviz)) ((gnu packages guile) #:select (guile-3.0 guile-zlib)) - ((gnu packages guile-xyz) #:select (guile-dbd-mysql guile-dbi guile-hashing guile-libyaml)) + ((gnu packages guile-xyz) #:select (guile-dbd-mysql guile-dbi guile-hashing guile-lib guile-libyaml)) ((gnu packages guile-xyz) #:select (guile-sparql) #:prefix guix:) ((gnu packages haskell-apps) #:select (shellcheck)) ((gnu packages python-check) #:select (python-mypy)) @@ -718,6 +718,48 @@ menu link to channels.scm and the issue tracker at ISSUE-TRACKER-URI." (mkdir-p "/var/lib/laminar/custom") (switch-symlinks "/var/lib/laminar/custom/index.html" #$template)))) +(define %ci-domain + "ci.genenetwork.org") + +(define (cd-error-pages-gexp) + "Return a G-expression that builds a directory with error pages for +the GeneNetwork continuous deployment." + (with-imported-modules '((guix build utils)) + (with-extensions (list guile-lib) + #~(begin + (use-modules (guix build utils) + (htmlprag)) + + (define (ci-badge job) + `(div (a (@ (href ,(string-append "https://" #$%ci-domain "/jobs/" job))) + (img (@ (src ,(string-append "https://" #$%ci-domain "/badge/" job ".svg"))))))) + + (define (page-sxml jobs) + `(html + (head + (title "GeneNetwork CD down!")) + (body + (h1 "GeneNetwork CD is down!") + (p "Is the CI red?") + ,@(map ci-badge jobs)))) + + (mkdir-p (string-append #$output "/error")) + (call-with-output-file (string-append #$output "/error/502.html") + (lambda (port) + (display "<!DOCTYPE html>" port) + (newline port) + (display + (sxml->html + ;; Construct a 502 page pulling out CI job names using a + ;; dummy default genenetwork configuration. + (page-sxml '#$(append-map (lambda (project) + (map forge-laminar-job-name + (forge-project-ci-jobs project))) + (genenetwork-projects + (genenetwork-configuration))))) + port) + (newline port))))))) + (define (channels-scm-gexp published-channel-names) "Return a G-expression that builds a directory with a channels.scm file to be served by the laminar reverse @@ -762,7 +804,15 @@ on." (body (list "rewrite /api3/(.*) /api/$1 break;" (string-append "proxy_pass http://localhost:" (number->string gn3-port) ";") - "proxy_set_header Host $host;"))))))) + "proxy_set_header Host $host;"))) + (nginx-location-configuration + (uri " /error/") + (body (list #~(string-append + "root " + #$(computed-file "genenetwork-cd-error-pages" + (cd-error-pages-gexp)) + ";")))))) + (raw-content (list "error_page 502 /error/502.html;")))) (define (laminar-reverse-proxy-server-block listen laminar-bind-http webhook-port published-channel-names) "Return an <nginx-server-configuration> object to reverse proxy @@ -771,7 +821,7 @@ laminar listening on LAMINAR-BIND-HTTP. WEBHOOK-PORT is the port the webhook server is listening on. PUBLISHED-CHANNEL-NAMES is a list of channel names for which a channels.scm should be published." (nginx-server-configuration - (server-name '("ci.genenetwork.org")) + (server-name (list %ci-domain)) (listen (list listen)) (locations (list (nginx-location-configuration |