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|
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.gerrit;
# NixOS option type for git-like configs
gitIniType = with types;
let
primitiveType = either str (either bool int);
multipleType = either primitiveType (listOf primitiveType);
sectionType = lazyAttrsOf multipleType;
supersectionType = lazyAttrsOf (either multipleType sectionType);
in lazyAttrsOf supersectionType;
gerritConfig = pkgs.writeText "gerrit.conf" (
lib.generators.toGitINI cfg.settings
);
replicationConfig = pkgs.writeText "replication.conf" (
lib.generators.toGitINI cfg.replicationSettings
);
# Wrap the gerrit java with all the java options so it can be called
# like a normal CLI app
gerrit-cli = pkgs.writeShellScriptBin "gerrit" ''
set -euo pipefail
jvmOpts=(
${lib.escapeShellArgs cfg.jvmOpts}
-Xmx${cfg.jvmHeapLimit}
)
exec ${cfg.jvmPackage}/bin/java \
"''${jvmOpts[@]}" \
-jar ${cfg.package}/webapps/${cfg.package.name}.war \
"$@"
'';
gerrit-plugins = pkgs.runCommand
"gerrit-plugins"
{
buildInputs = [ gerrit-cli ];
}
''
shopt -s nullglob
mkdir $out
for name in ${toString cfg.builtinPlugins}; do
echo "Installing builtin plugin $name.jar"
gerrit cat plugins/$name.jar > $out/$name.jar
done
for file in ${toString cfg.plugins}; do
name=$(echo "$file" | cut -d - -f 2-)
echo "Installing plugin $name"
ln -sf "$file" $out/$name
done
'';
in
{
options = {
services.gerrit = {
enable = mkEnableOption "Gerrit service";
package = mkOption {
type = types.package;
default = pkgs.gerrit;
description = "Gerrit package to use";
};
jvmPackage = mkOption {
type = types.package;
default = pkgs.jre_headless;
defaultText = "pkgs.jre_headless";
description = "Java Runtime Environment package to use";
};
jvmOpts = mkOption {
type = types.listOf types.str;
default = [
"-Dflogger.backend_factory=com.google.common.flogger.backend.log4j.Log4jBackendFactory#getInstance"
"-Dflogger.logging_context=com.google.gerrit.server.logging.LoggingContext#getInstance"
];
description = "A list of JVM options to start gerrit with.";
};
jvmHeapLimit = mkOption {
type = types.str;
default = "1024m";
description = ''
How much memory to allocate to the JVM heap
'';
};
listenAddress = mkOption {
type = types.str;
default = "[::]:8080";
description = ''
<literal>hostname:port</literal> to listen for HTTP traffic.
This is bound using the systemd socket activation.
'';
};
settings = mkOption {
type = gitIniType;
default = {};
description = ''
Gerrit configuration. This will be generated to the
<literal>etc/gerrit.config</literal> file.
'';
};
replicationSettings = mkOption {
type = gitIniType;
default = {};
description = ''
Replication configuration. This will be generated to the
<literal>etc/replication.config</literal> file.
'';
};
plugins = mkOption {
type = types.listOf types.package;
default = [];
description = ''
List of plugins to add to Gerrit. Each derivation is a jar file
itself where the name of the derivation is the name of plugin.
'';
};
builtinPlugins = mkOption {
type = types.listOf (types.enum cfg.package.passthru.plugins);
default = [];
description = ''
List of builtins plugins to install. Those are shipped in the
<literal>gerrit.war</literal> file.
'';
};
serverId = mkOption {
type = types.str;
description = ''
Set a UUID that uniquely identifies the server.
This can be generated with
<literal>nix-shell -p utillinux --run uuidgen</literal>.
'';
};
};
};
config = mkIf cfg.enable {
assertions = [
{
assertion = cfg.replicationSettings != {} -> elem "replication" cfg.builtinPlugins;
message = "Gerrit replicationSettings require enabling the replication plugin";
}
];
services.gerrit.settings = {
cache.directory = "/var/cache/gerrit";
container.heapLimit = cfg.jvmHeapLimit;
gerrit.basePath = lib.mkDefault "git";
gerrit.serverId = cfg.serverId;
httpd.inheritChannel = "true";
httpd.listenUrl = lib.mkDefault "http://${cfg.listenAddress}";
index.type = lib.mkDefault "lucene";
};
# Add the gerrit CLI to the system to run `gerrit init` and friends.
environment.systemPackages = [ gerrit-cli ];
systemd.sockets.gerrit = {
unitConfig.Description = "Gerrit HTTP socket";
wantedBy = [ "sockets.target" ];
listenStreams = [ cfg.listenAddress ];
};
systemd.services.gerrit = {
description = "Gerrit";
wantedBy = [ "multi-user.target" ];
requires = [ "gerrit.socket" ];
after = [ "gerrit.socket" "network.target" ];
path = [
gerrit-cli
pkgs.bash
pkgs.coreutils
pkgs.git
pkgs.openssh
];
environment = {
GERRIT_HOME = "%S/gerrit";
GERRIT_TMP = "%T";
HOME = "%S/gerrit";
XDG_CONFIG_HOME = "%S/gerrit/.config";
};
preStart = ''
set -euo pipefail
# bootstrap if nothing exists
if [[ ! -d git ]]; then
gerrit init --batch --no-auto-start
fi
# install gerrit.war for the plugin manager
rm -rf bin
mkdir bin
ln -sfv ${cfg.package}/webapps/${cfg.package.name}.war bin/gerrit.war
# copy the config, keep it mutable because Gerrit
ln -sfv ${gerritConfig} etc/gerrit.config
ln -sfv ${replicationConfig} etc/replication.config
# install the plugins
rm -rf plugins
ln -sv ${gerrit-plugins} plugins
''
;
serviceConfig = {
CacheDirectory = "gerrit";
DynamicUser = true;
ExecStart = "${gerrit-cli}/bin/gerrit daemon --console-log";
LimitNOFILE = 4096;
StandardInput = "socket";
StandardOutput = "journal";
StateDirectory = "gerrit";
WorkingDirectory = "%S/gerrit";
};
};
};
meta.maintainers = with lib.maintainers; [ edef zimbatm ];
}
|
