Support publishing build events

Add a table to store events, which have a type and a JSON blob. These can be
used to record changes, this commit inserts events when new builds are
created, and when the status of builds change.

The EventsOutbox table is then used to track when events have been sent
out. This is done through the new cuirass-send-events script.

* Makefile.am (bin_SCRIPTS): Add bin/cuirass-send-events.
.gitignore: Add bin/cuirass-send-events.
(dist_pkgmodule_DATA): Add src/cuirass/send-events.scm.
(dist_sql_DATA): Add src/sql/upgrade-5.sql.
(EXTRA_DIST): bin/cuirass-send-events.in.
(bin/cuirass-send-events): New rule.
* bin/cuirass-send-events.in: New file.
* src/cuirass/send-events.scm: New file.
* src/sql/upgrade-5.sql: New file.
* src/cuirass/database.scm (changes-count): New procedure.
(db-update-build-status!): Call db-add-event after updating the build status.
(db-add-event): New procedure.
(db-add-build): Insert an event when a new build is inserted.
(db-delete-events-with-ids-<=-to): New procedure.
* src/schema.sql (Events): New table.
This commit is contained in:
Christopher Baines 2019-10-21 22:43:16 +01:00
parent 5c5790ad21
commit 12def48b3b
8 changed files with 311 additions and 13 deletions

1
.gitignore vendored
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@ -10,6 +10,7 @@
/aclocal.m4
/autom4te.cache/
/bin/cuirass
/bin/cuirass-send-events
/bin/evaluate
/build-aux/config.guess
/build-aux/config.sub

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@ -21,7 +21,7 @@
# You should have received a copy of the GNU General Public License
# along with Cuirass. If not, see <http://www.gnu.org/licenses/>.
bin_SCRIPTS = bin/cuirass bin/evaluate
bin_SCRIPTS = bin/cuirass bin/cuirass-send-events bin/evaluate
noinst_SCRIPTS = pre-inst-env
guilesitedir = $(datarootdir)/guile/site/@GUILE_EFFECTIVE_VERSION@
@ -45,6 +45,7 @@ dist_pkgmodule_DATA = \
src/cuirass/database.scm \
src/cuirass/http.scm \
src/cuirass/logging.scm \
src/cuirass/send-events.scm \
src/cuirass/ui.scm \
src/cuirass/utils.scm \
src/cuirass/templates.scm
@ -68,7 +69,8 @@ dist_sql_DATA = \
src/sql/upgrade-1.sql \
src/sql/upgrade-2.sql \
src/sql/upgrade-3.sql \
src/sql/upgrade-4.sql
src/sql/upgrade-4.sql \
src/sql/upgrade-5.sql
dist_css_DATA = \
src/static/css/bootstrap.css \
@ -143,6 +145,7 @@ sql-check: src/schema.sql
EXTRA_DIST = \
.dir-locals.el \
bin/cuirass.in \
bin/cuirass-send-events.in \
bin/evaluate.in \
bootstrap \
build-aux/guix.scm \
@ -202,6 +205,7 @@ generate_file = \
# These files depend on Makefile so they are rebuilt if $(VERSION),
# $(datadir) or other do_subst'ituted variables change.
bin/cuirass: $(srcdir)/bin/cuirass.in
bin/cuirass-send-events: $(srcdir)/bin/cuirass-send-events.in
bin/evaluate: $(srcdir)/bin/evaluate.in
$(bin_SCRIPTS): Makefile
$(generate_file); chmod +x $@

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@ -0,0 +1,80 @@
#!/bin/sh
# -*- scheme -*-
# @configure_input@
#GUILE_LOAD_PATH="@PACKAGE_LOAD_PATH@${GUILE_LOAD_PATH:+:}$GUILE_LOAD_PATH"
#GUILE_LOAD_COMPILED_PATH="@PACKAGE_LOAD_COMPILED_PATH@${GUILE_LOAD_COMPILED_PATH:+:}$GUILE_LOAD_COMPILED_PATH"
exec ${GUILE:-@GUILE@} --no-auto-compile -e main -s "$0" "$@"
!#
;;;; cuirass -- continuous integration tool
;;; Copyright © 2016 Mathieu Lirzin <mthl@gnu.org>
;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
;;; Copyright © 2018 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2018 Clément Lassieur <clement@lassieur.org>
;;; Copyright © 2019 Christopher Baines <mail@cbaines.net>
;;;
;;; This file is part of Cuirass.
;;;
;;; Cuirass is free software: you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation, either version 3 of the License, or
;;; (at your option) any later version.
;;;
;;; Cuirass 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 General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with Cuirass. If not, see <http://www.gnu.org/licenses/>.
(use-modules (cuirass)
(cuirass ui)
(cuirass logging)
(cuirass utils)
(cuirass send-events)
(guix ui)
(fibers)
(fibers channels)
(srfi srfi-19)
(ice-9 getopt-long))
(define (show-help)
(format #t "Usage: ~a [OPTIONS]~%" (%program-name))
(display "Send events to the target URL.
-T --target-url=URL Send events to URL.
-D --database=DB Use DB to store build results.
-h, --help Display this help message")
(newline)
(show-package-information))
(define %options
'((target-url (single-char #\T) (value #t))
(database (single-char #\D) (value #t))
(help (single-char #\h) (value #f))))
;;;
;;; Entry point.
;;;
(define* (main #:optional (args (command-line)))
;; Always have stdout/stderr line-buffered.
(setvbuf (current-output-port) 'line)
(setvbuf (current-error-port) 'line)
(let ((opts (getopt-long args %options)))
(parameterize
((%program-name (car args))
(%package-database (option-ref opts 'database (%package-database)))
(%package-cachedir
(option-ref opts 'cache-directory (%package-cachedir))))
(cond
((option-ref opts 'help #f)
(show-help)
(exit 0))
(else
(while #t
(send-events (option-ref opts 'target-url #f))
(sleep 5)))))))

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@ -54,6 +54,7 @@ exec ${GUILE:-@GUILE@} --no-auto-compile -e main -s "$0" "$@"
--listen=HOST Listen on the network interface for HOST
-I, --interval=N Wait N seconds between each poll
--use-substitutes Allow usage of pre-built substitutes
--record-events Record events for distribution
--threads=N Use up to N kernel threads
-V, --version Display version
-h, --help Display this help message")
@ -72,6 +73,7 @@ exec ${GUILE:-@GUILE@} --no-auto-compile -e main -s "$0" "$@"
(use-substitutes (value #f))
(threads (value #t))
(fallback (value #f))
(record-events (value #f))
(ttl (value #t))
(version (single-char #\V) (value #f))
(help (single-char #\h) (value #f))))
@ -95,6 +97,7 @@ exec ${GUILE:-@GUILE@} --no-auto-compile -e main -s "$0" "$@"
(option-ref opts 'cache-directory (%package-cachedir)))
(%use-substitutes? (option-ref opts 'use-substitutes #f))
(%fallback? (option-ref opts 'fallback #f))
(%record-events? (option-ref opts 'record-events #f))
(%gc-root-ttl
(time-second (string->duration (option-ref opts 'ttl "30d")))))
(cond

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@ -54,6 +54,9 @@
db-get-builds-max
db-get-builds-query-min
db-get-builds-query-max
db-add-event
db-get-events
db-delete-events-with-ids-<=-to
db-get-evaluations
db-get-evaluations-build-summary
db-get-evaluations-id-min
@ -67,6 +70,7 @@
%package-database
%package-schema-file
%db-channel
%record-events?
;; Macros.
with-db-critical-section
with-database))
@ -164,6 +168,9 @@ specified."
(define %db-channel
(make-parameter #f))
(define %record-events?
(make-parameter #f))
(define-syntax-rule (with-db-critical-section db exp ...)
"Evaluate EXP... in the critical section corresponding to %DB-CHANNEL.
DB is bound to the argument of that critical section: the database
@ -270,6 +277,12 @@ database object."
(vector-ref (car (sqlite-exec db "SELECT last_insert_rowid();"))
0))
(define (changes-count db)
"The number of database rows that were changed or inserted or deleted by the
most recently completed INSERT, DELETE, or UPDATE statement."
(vector-ref (car (sqlite-exec db "SELECT changes();"))
0))
(define (expect-one-row rows)
"Several SQL queries expect one result, or zero if not found. This gets rid
of the list, and returns #f when there is no result."
@ -504,7 +517,15 @@ VALUES ("
(if (null? new-outputs)
(begin (sqlite-exec db "ROLLBACK;")
#f)
(begin (sqlite-exec db "COMMIT;")
(begin (db-add-event 'build
(assq-ref build #:timestamp)
`((#:derivation . ,(assq-ref build #:derivation))
;; TODO Ideally this would use the value
;; from build, with a default of scheduled,
;; but it's hard to convert to the symbol,
;; so just hard code scheduled for now.
(#:event . scheduled)))
(sqlite-exec db "COMMIT;")
derivation)))
;; If we get a unique-constraint-failed error, that means we have
@ -521,23 +542,42 @@ log file for DRV."
(define now
(time-second (current-time time-utc)))
(define status-names
`((,(build-status succeeded) . "succeeded")
(,(build-status failed) . "failed")
(,(build-status failed-dependency) . "failed (dependency)")
(,(build-status failed-other) . "failed (other)")
(,(build-status canceled) . "canceled")))
(with-db-critical-section db
(if (= status (build-status started))
(sqlite-exec db "UPDATE Builds SET starttime=" now ", status="
status "WHERE derivation=" drv ";")
(begin
(sqlite-exec db "UPDATE Builds SET starttime=" now ", status="
status "WHERE derivation=" drv ";")
(db-add-event 'build
now
`((#:derivation . ,drv)
(#:event . started))))
;; Update only if we're switching to a different status; otherwise
;; leave things unchanged. This ensures that 'stoptime' remains valid
;; and doesn't change every time we mark DRV as 'succeeded' several
;; times in a row, for instance.
(if log-file
(sqlite-exec db "UPDATE Builds SET stoptime=" now
", status=" status ", log=" log-file
"WHERE derivation=" drv "AND status != " status ";")
(sqlite-exec db "UPDATE Builds SET stoptime=" now
", status=" status
"WHERE derivation=" drv " AND status != " status
";")))))
(begin
(if log-file
(sqlite-exec db "UPDATE Builds SET stoptime=" now
", status=" status ", log=" log-file
"WHERE derivation=" drv "AND status != " status ";")
(sqlite-exec db "UPDATE Builds SET stoptime=" now
", status=" status
"WHERE derivation=" drv " AND status != " status
";"))
(when (positive? (changes-count db))
(db-add-event 'build
now
`((#:derivation . ,drv)
(#:event . ,(assq-ref status-names
status)))))))))
(define (db-get-outputs derivation)
"Retrieve the OUTPUTS of the build identified by DERIVATION in the
@ -741,6 +781,63 @@ ORDER BY ~a, rowid ASC;" order))
(let ((key (if (number? derivation-or-id) 'id 'derivation)))
(expect-one-row (db-get-builds `((,key . ,derivation-or-id)))))))
(define (db-add-event type timestamp details)
(when (%record-events?)
(with-db-critical-section db
(sqlite-exec db "\
INSERT INTO Events (type, timestamp, event_json) VALUES ("
(symbol->string type) ", "
timestamp ", "
(object->json-string details)
");")
#t)))
(define (db-get-events filters)
(with-db-critical-section db
(let* ((stmt-text "\
SELECT Events.id,
Events.type,
Events.timestamp,
Events.event_json
FROM Events
WHERE (:type IS NULL OR (:type = Events.type))
AND (:borderlowtime IS NULL OR
:borderlowid IS NULL OR
((:borderlowtime, :borderlowid) <
(Events.timestamp, Events.id)))
AND (:borderhightime IS NULL OR
:borderhighid IS NULL OR
((:borderhightime, :borderhighid) >
(Events.timestamp, Events.id)))
ORDER BY Events.id ASC
LIMIT :nr;")
(stmt (sqlite-prepare db stmt-text #:cache? #t)))
(sqlite-bind-arguments
stmt
#:type (and=> (assq-ref filters 'type)
symbol->string)
#:nr (match (assq-ref filters 'nr)
(#f -1)
(x x)))
(sqlite-reset stmt)
(let loop ((rows (sqlite-fold-right cons '() stmt))
(events '()))
(match rows
(() (reverse events))
((#(id type timestamp event_json) . rest)
(loop rest
(cons `((#:id . ,id)
(#:type . ,type)
(#:timestamp . ,timestamp)
(#:event_json . ,event_json))
events))))))))
(define (db-delete-events-with-ids-<=-to id)
(with-db-critical-section db
(sqlite-exec
db
"DELETE FROM Events WHERE id <= " id ";")))
(define (db-get-pending-derivations)
"Return the list of derivation file names corresponding to pending builds in
the database. The returned list is guaranteed to not have any duplicates."

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@ -0,0 +1,91 @@
;;;; http.scm -- HTTP API
;;; Copyright © 2019 Christopher Baines <mail@cbaines.net>
;;;
;;; This file is part of Cuirass.
;;;
;;; Cuirass is free software: you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation, either version 3 of the License, or
;;; (at your option) any later version.
;;;
;;; Cuirass 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 General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with Cuirass. If not, see <http://www.gnu.org/licenses/>.
(define-module (cuirass send-events)
#:use-module (cuirass config)
#:use-module (cuirass database)
#:use-module (cuirass utils)
#:use-module (cuirass logging)
#:use-module (web client)
#:use-module (web response)
#:use-module (json)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-11)
#:use-module (rnrs bytevectors)
#:use-module (ice-9 textual-ports)
#:export (send-events))
(define* (send-events target-url
#:key (batch-limit 100))
"Send up to BATCH-LIMIT events to TARGET-URL"
(with-exponential-backoff-upon-error
(lambda ()
(let ((events-to-send
(db-get-events `((nr . ,batch-limit)))))
(unless (null? events-to-send)
(let ((body
(object->json-string
`((items
. ,(list->vector
(map (lambda (event)
(let ((event-json
(json-string->scm
(assq-ref event #:event_json))))
`((id . ,(assq-ref event #:id))
(type . ,(assq-ref event #:type))
(timestamp . ,(assq-ref event #:timestamp))
,@event-json)))
events-to-send)))))))
(let*-values
(((response body)
(http-post target-url
#:body body
;; Guile doesn't treat JSON as text, so decode the
;; body manually
#:decode-body? #f))
((code)
(response-code response)))
(unless (and (>= code 200)
(< code 300))
(throw
'request-failure
(simple-format #f "code: ~A response: ~A"
code
(utf8->string body))))))
(db-delete-events-with-ids-<=-to
(assq-ref (last events-to-send) #:id))
(simple-format #t "Sent ~A events\n" (length events-to-send)))))))
(define* (with-exponential-backoff-upon-error thunk #:key (retry-number 1))
"Call THUNK and catch exceptions, retrying after a number of seconds that
increases exponentially."
(catch
#t
thunk
(lambda (key . args)
(simple-format (current-error-port)
"Failure sending events (try ~A)\n"
retry-number)
(print-exception (current-error-port) #f key args)
(let ((sleep-length (integer-expt 2 retry-number)))
(simple-format (current-error-port)
"\nWaiting for ~A seconds\n"
sleep-length)
(sleep sleep-length)
(with-exponential-backoff-upon-error thunk #:retry-number
(+ retry-number 1))))))

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@ -64,6 +64,13 @@ CREATE TABLE Builds (
FOREIGN KEY (evaluation) REFERENCES Evaluations (id)
);
CREATE TABLE Events (
id INTEGER PRIMARY KEY,
type TEXT NOT NULL,
timestamp INTEGER NOT NULL,
event_json TEXT NOT NULL
);
-- Create indexes to speed up common queries, in particular those
-- corresponding to /api/latestbuilds and /api/queue HTTP requests.
CREATE INDEX Builds_index ON Builds(job_name, system, status ASC, timestamp ASC, derivation, evaluation, stoptime DESC);

15
src/sql/upgrade-5.sql Normal file
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@ -0,0 +1,15 @@
BEGIN TRANSACTION;
CREATE TABLE Events (
id INTEGER PRIMARY KEY,
type TEXT NOT NULL,
timestamp INTEGER NOT NULL,
event_json TEXT NOT NULL
);
CREATE TABLE EventsOutbox (
event_id INTEGER NOT NULL,
FOREIGN KEY (event_id) REFERENCES Events (id)
);
COMMIT;