* src/cuirass/database.scm (db-get-builds): Make 'order' a separate
filter. Add 'format-limit-clause'. Reverse OUTPUTS.
* tests/database.scm (make-dummy-eval, make-dummy-derivation)
(make-dummy-build): New procedures.
(with-temporary-database): New macro.
("database"): Use 'make-dummy-build'.
("db-get-builds"): New test.
* doc/cuirass.texi (Sections)[Web API]: New section describing the HTTP API.
* src/cuirass/http.scm (spec->json-string): Move it to utils.scm and rename it
object->json-string.
(object->json-scm): Move it utils.scm.
(handle-*-request): New helpers procedures.
(request-parameters): New procedure to parse a request query.
(url-handler): Add new API's.
* src/cuirass/utils.scm (object->json-scm, object->json-string): Exported
procedures moved from http.scm.
* tests/http.scm: Add various tests on new HTTP API.
integration.
* bin/evaluate.in (fill-job): New procedure.
(main): Use it to fill informations (nix-name, system) that will later be
added to database.
* doc/cuirass.texi (Database)[Derivation]: Add system and nix_name fields.
(Database)[Builds]: Add id, status, timestamp, starttime and stoptime
fields. Remove output field.
(Database)[Outputs]: New table describing the build outputs.
* src/cuirass/base.scm (build-packages): Add new fields to build object before
adding it to database.
* src/cuirass/database.scm (db-get-build, db-get-builds): New procedures to get
a build by id from database and a list of builds using filter parameters
respectively.
* src/schema.sql (Outputs) : New table.
(Derivations): Add system and nix_name columns.
(Builds): Remove output column and add id, status, timestamp, starttime and
stoptime columns.
* src/cuirass/database.scm (db-get-stamp, db-add-stamp): Replace #:id
by #:name. There is no #:id in specifications. Plus, the primary key
of Specifications is #:name.
This fixes the issue of having multiple identical derivations associated with
an evaluation as reported by Ludovic Courtès <ludo@gnu.org> at
<https://lists.gnu.org/archive/html/guix-devel/2017-01/msg00109.html>.
* src/cuirass/database.scm (db-add-derivation): Ignore if JOB is already
present in DB.
