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|
{ config, options, lib, pkgs, ... }:
with lib;
let
cfg = config.services.hbase;
opt = options.services.hbase;
buildProperty = configAttr:
(builtins.concatStringsSep "\n"
(lib.mapAttrsToList
(name: value: ''
<property>
<name>${name}</name>
<value>${builtins.toString value}</value>
</property>
'')
configAttr));
configFile = pkgs.writeText "hbase-site.xml"
''<configuration>
${buildProperty (opt.settings.default // cfg.settings)}
</configuration>
'';
configDir = pkgs.runCommand "hbase-config-dir" { preferLocalBuild = true; } ''
mkdir -p $out
cp ${cfg.package}/conf/* $out/
rm $out/hbase-site.xml
ln -s ${configFile} $out/hbase-site.xml
'' ;
in {
###### interface
options = {
services.hbase = {
enable = mkOption {
type = types.bool;
default = false;
description = ''
Whether to run HBase.
'';
};
package = mkOption {
type = types.package;
default = pkgs.hbase;
defaultText = literalExpression "pkgs.hbase";
description = ''
HBase package to use.
'';
};
user = mkOption {
type = types.str;
default = "hbase";
description = ''
User account under which HBase runs.
'';
};
group = mkOption {
type = types.str;
default = "hbase";
description = ''
Group account under which HBase runs.
'';
};
dataDir = mkOption {
type = types.path;
default = "/var/lib/hbase";
description = ''
Specifies location of HBase database files. This location should be
writable and readable for the user the HBase service runs as
(hbase by default).
'';
};
logDir = mkOption {
type = types.path;
default = "/var/log/hbase";
description = ''
Specifies the location of HBase log files.
'';
};
settings = mkOption {
type = with lib.types; attrsOf (oneOf [ str int bool ]);
default = {
"hbase.rootdir" = "file://${cfg.dataDir}/hbase";
"hbase.zookeeper.property.dataDir" = "${cfg.dataDir}/zookeeper";
};
defaultText = literalExpression ''
{
"hbase.rootdir" = "file://''${config.${opt.dataDir}}/hbase";
"hbase.zookeeper.property.dataDir" = "''${config.${opt.dataDir}}/zookeeper";
}
'';
description = ''
configurations in hbase-site.xml, see <link xlink:href="https://github.com/apache/hbase/blob/master/hbase-server/src/test/resources/hbase-site.xml"/> for details.
'';
};
};
};
###### implementation
config = mkIf config.services.hbase.enable {
systemd.tmpfiles.rules = [
"d '${cfg.dataDir}' - ${cfg.user} ${cfg.group} - -"
"d '${cfg.logDir}' - ${cfg.user} ${cfg.group} - -"
];
systemd.services.hbase = {
description = "HBase Server";
wantedBy = [ "multi-user.target" ];
environment = {
# JRE 15 removed option `UseConcMarkSweepGC` which is needed.
JAVA_HOME = "${pkgs.jre8}";
HBASE_LOG_DIR = cfg.logDir;
};
serviceConfig = {
User = cfg.user;
Group = cfg.group;
ExecStart = "${cfg.package}/bin/hbase --config ${configDir} master start";
};
};
users.users.hbase = {
description = "HBase Server user";
group = "hbase";
uid = config.ids.uids.hbase;
};
users.groups.hbase.gid = config.ids.gids.hbase;
};
}
|