1 files changed, 31 insertions, 0 deletions
diff --git a/nixos/modules/services/cluster/hadoop/conf.nix b/nixos/modules/services/cluster/hadoop/conf.nix
new file mode 100644
index 00000000000..38db10406b9
--- /dev/null
+++ b/nixos/modules/services/cluster/hadoop/conf.nix
@@ -0,0 +1,31 @@
+{ hadoop, pkgs }:
+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>
+  '';
+  userFunctions = ''
+    hadoop_verify_logdir() {
+      echo Skipping verification of log directory
+    }
+  '';
+in
+pkgs.buildEnv {
+  name = "hadoop-conf";
+  paths = [
+    (siteXml "core-site.xml" hadoop.coreSite)
+    (siteXml "hdfs-site.xml" hadoop.hdfsSite)
+    (siteXml "mapred-site.xml" hadoop.mapredSite)
+    (siteXml "yarn-site.xml" hadoop.yarnSite)
+    (pkgs.writeTextDir "hadoop-user-functions.sh" userFunctions)
+  ];
+}