From d45a3021ea22eb9d088abf7af27367f6d39b56cf Mon Sep 17 00:00:00 2001
From: Igor Pashev <pashev.igor@gmail.com>
Date: Sat, 15 Sep 2018 15:59:02 +0300
Subject: Support node configuration in Jenkins

Similar to jobs.
---
 modules/apps/jenkins/default.nix  | 15 +++++++++++++++
 modules/apps/jenkins/instance.nix |  9 +++++++++
 2 files changed, 24 insertions(+)

diff --git a/modules/apps/jenkins/default.nix b/modules/apps/jenkins/default.nix
index 42ae197..210a4ea 100644
--- a/modules/apps/jenkins/default.nix
+++ b/modules/apps/jenkins/default.nix
@@ -26,6 +26,7 @@ let
 
   configFiles = name: cfg: mapAttrs (n: v: maybeFile "jenkins-${name}-${n}" v) cfg.config;
   jobFiles = name: cfg: mapAttrs (n: v: maybeFile "jenkins-${name}-job-${n}.xml" v) cfg.jobs;
+  nodeFiles = name: cfg: mapAttrs (n: v: maybeFile "jenkins-${name}-node-${n}.xml" v) cfg.nodes;
 
   keyrings =
     let
@@ -87,6 +88,20 @@ let
           '') (jobFiles name cfg)
         )}
 
+        if [ -d nodes ]; then
+          find nodes -maxdepth 1 -mindepth 1 -type d \
+            ${concatMapStringsSep " " (k: "-not -name '${escape [ "[" ] k}'") (attrNames cfg.nodes)} \
+            -print0 | xargs -0 --verbose --no-run-if-empty rm -rf
+        fi
+
+        ${concatStringsSep "\n" (
+          mapAttrsToList (n: p: ''
+            mkdir -p -- 'nodes/${n}'
+            rm -rf -- 'nodes/${n}/config.xml'
+            ${pkgs.libxml2}/bin/xmllint --xinclude --format '${p}' > 'nodes/${n}/config.xml'
+          '') (nodeFiles name cfg)
+        )}
+
         mkdir -p secrets
         echo ${if cfg.master-access-control then "false" else "true"} > secrets/slave-to-master-security-kill-switch
 
diff --git a/modules/apps/jenkins/instance.nix b/modules/apps/jenkins/instance.nix
index 6cca8a4..89c5c93 100644
--- a/modules/apps/jenkins/instance.nix
+++ b/modules/apps/jenkins/instance.nix
@@ -62,6 +62,15 @@ in {
       default = true;
     };
 
+    nodes = mkOption {
+      description = ''
+        Nodes. Each value is either inline XML text or an XML file.
+        Any existing nodes, not mentioned here, are physically removed.
+      '';
+      type = attrsOf (either str path);
+      default = {};
+    };
+
     jobs = mkOption {
       description = ''
         Jenkins jobs. Each value is either inline XML text or an XML file.
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