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nixos: add services.jenkins.jobBuilder option

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This option allows to define (declarative) Jenkins jobs, using Jenkins
Job Builder (JJB) as backend.

Example:

  services.jenkins = {
    enable = true;
    jobBuilder = {
      enable = true;
      yamlJobs = ''
        - job:
            name: jenkins-job-test
            builders:
              - shell: echo 'Hello world!'
      '';
    };
  };

Jobs can be defined using YAML, JSON and Nix.

Note that it really is declarative configuration; if you remove a
previously defined job, the module will remove the jobdir under
$JENKINS_HOME.

Jobs managed through the Jenkins WebUI (or by other means) are not
touched by this module.

Changes v1 -> v2:
* add nixJobs
* let jsonJobs take a list of strings (allows merge)
* 4 space indent in shell code
This commit is contained in:
Bjørn Forsman 2015-10-08 22:15:15 +02:00
parent a487b3326b
commit 27f41d8c0a
2 changed files with 156 additions and 0 deletions
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1
nixos/modules/module-list.nix
View file

@ -118,6 +118,7 @@
./services/computing/slurm/slurm.nix
./services/continuous-integration/jenkins/default.nix
./services/continuous-integration/jenkins/slave.nix
./services/continuous-integration/jenkins/job-builder.nix
./services/databases/4store-endpoint.nix
./services/databases/4store.nix
./services/databases/couchdb.nix

155
nixos/modules/services/continuous-integration/jenkins/job-builder.nix Normal file
View file

@ -0,0 +1,155 @@
{ config, lib, pkgs, ... }:
with lib;
let
jenkinsCfg = config.services.jenkins;
cfg = config.services.jenkins.jobBuilder;
in {
options = {
services.jenkins.jobBuilder = {
enable = mkOption {
type = types.bool;
default = false;
description = ''
Whether or not to enable the Jenkins Job Builder (JJB) service. It
allows defining jobs for Jenkins in a declarative manner.
Jobs managed through the Jenkins WebUI (or by other means) are left
unchanged.
Note that it really is declarative configuration; if you remove a
previously defined job, the corresponding job directory will be
deleted.
Please see the Jenkins Job Builder documentation for more info:
<link xlink:href="http://docs.openstack.org/infra/jenkins-job-builder/">
http://docs.openstack.org/infra/jenkins-job-builder/</link>
'';
};
yamlJobs = mkOption {
default = "";
type = types.lines;
example = ''
- job:
name: jenkins-job-test-1
builders:
- shell: echo 'Hello world!'
'';
description = ''
Job descriptions for Jenkins Job Builder in YAML format.
'';
};
jsonJobs = mkOption {
default = [ ];
type = types.listOf types.str;
example = literalExample ''
[
'''
[ { "job":
{ "name": "jenkins-job-test-2",
"builders": [ "shell": "echo 'Hello world!'" ]
}
}
]
'''
]
'';
description = ''
Job descriptions for Jenkins Job Builder in JSON format.
'';
};
nixJobs = mkOption {
default = [ ];
type = types.listOf types.attrs;
example = literalExample ''
[ { job =
{ name = "jenkins-job-test-3";
builders = [
{ shell = "echo 'Hello world!'"; }
];
};
}
];
'';
description = ''
Job descriptions for Jenkins Job Builder in Nix format.
This is a trivial wrapper around jsonJobs, using builtins.toJSON
behind the scene.
'';
};
};
};
config = mkIf (jenkinsCfg.enable && cfg.enable) {
systemd.services.jenkins-job-builder = {
description = "Jenkins Job Builder Service";
# JJB can run either before or after jenkins. We chose after, so we can
# always use curl to notify (running) jenkins to reload its config.
after = [ "jenkins.service" ];
wantedBy = [ "multi-user.target" ];
path = with pkgs; [ jenkins-job-builder curl ];
# Q: Why manipulate files directly instead of using "jenkins-jobs upload [...]"?
# A: Because this module is for administering a local jenkins install,
# and using local file copy allows us to not worry about
# authentication.
script =
let
yamlJobsFile = builtins.toFile "jobs.yaml" cfg.yamlJobs;
jsonJobsFiles =
map (x: (builtins.toFile "jobs.json" x))
(cfg.jsonJobs ++ [(builtins.toJSON cfg.nixJobs)]);
jobBuilderOutputDir = "/run/jenkins-job-builder/output";
# Stamp file is placed in $JENKINS_HOME/jobs/$JOB_NAME/ to indicate
# ownership. Enables tracking and removal of stale jobs.
ownerStamp = ".config-xml-managed-by-nixos-jenkins-job-builder";
in
''
rm -rf ${jobBuilderOutputDir}
cur_decl_jobs=/run/jenkins-job-builder/declarative-jobs
rm -f "$cur_decl_jobs"
# Create / update jobs
mkdir -p ${jobBuilderOutputDir}
for inputFile in ${yamlJobsFile} ${concatStringsSep " " jsonJobsFiles}; do
HOME="${jenkinsCfg.home}" "${pkgs.jenkins-job-builder}/bin/jenkins-jobs" --ignore-cache test -o "${jobBuilderOutputDir}" "$inputFile"
done
for file in "${jobBuilderOutputDir}/"*; do
test -f "$file" || continue
jobname="$(basename $file)"
jobdir="${jenkinsCfg.home}/jobs/$jobname"
echo "Creating / updating job \"$jobname\""
mkdir -p "$jobdir"
touch "$jobdir/${ownerStamp}"
cp "$file" "$jobdir/config.xml"
echo "$jobname" >> "$cur_decl_jobs"
done
# Remove stale jobs
for file in "${jenkinsCfg.home}"/jobs/*/${ownerStamp}; do
test -f "$file" || continue
jobdir="$(dirname $file)"
jobname="$(basename "$jobdir")"
grep --quiet --line-regexp "$jobname" "$cur_decl_jobs" 2>/dev/null && continue
echo "Deleting stale job \"$jobname\""
rm -rf "$jobdir"
done
echo "Asking Jenkins to reload config"
curl --silent -X POST http://localhost:${toString jenkinsCfg.port}/reload
'';
serviceConfig = {
User = jenkinsCfg.user;
RuntimeDirectory = "jenkins-job-builder";
};
};
};
}