nixpkgs-suyu/nixos/modules/services/cluster/hadoop/conf.nix
2021-11-03 22:44:25 +05:30

44 lines
1.5 KiB
Nix

{ cfg, pkgs, lib }:
let
propertyXml = name: value: ''
<property>
<name>${name}</name>
<value>${builtins.toString value}</value>
</property>
'';
siteXml = fileName: properties: pkgs.writeTextDir fileName ''
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!-- generated by NixOS -->
<configuration>
${builtins.concatStringsSep "\n" (pkgs.lib.mapAttrsToList propertyXml properties)}
</configuration>
'';
cfgLine = name: value: ''
${name}=${builtins.toString value}
'';
cfgFile = fileName: properties: pkgs.writeTextDir fileName ''
# generated by NixOS
${builtins.concatStringsSep "" (pkgs.lib.mapAttrsToList cfgLine properties)}
'';
userFunctions = ''
hadoop_verify_logdir() {
echo Skipping verification of log directory
}
'';
hadoopEnv = ''
export HADOOP_LOG_DIR=/tmp/hadoop/$USER
'';
in
pkgs.runCommand "hadoop-conf" {} ''
mkdir -p $out/
cp ${siteXml "core-site.xml" cfg.coreSite}/* $out/
cp ${siteXml "hdfs-site.xml" cfg.hdfsSite}/* $out/
cp ${siteXml "mapred-site.xml" cfg.mapredSite}/* $out/
cp ${siteXml "yarn-site.xml" cfg.yarnSite}/* $out/
cp ${siteXml "httpfs-site.xml" cfg.httpfsSite}/* $out/
cp ${cfgFile "container-executor.cfg" cfg.containerExecutorCfg}/* $out/
cp ${pkgs.writeTextDir "hadoop-user-functions.sh" userFunctions}/* $out/
cp ${pkgs.writeTextDir "hadoop-env.sh" hadoopEnv}/* $out/
cp ${cfg.log4jProperties} $out/log4j.properties
${lib.concatMapStringsSep "\n" (dir: "cp -r ${dir}/* $out/") cfg.extraConfDirs}
''