From 924471087c667640bad7ba38b5f9b00f2770f906 Mon Sep 17 00:00:00 2001
From: lassulus <lassulus@lassul.us>
Date: Tue, 23 Feb 2021 23:42:12 +0100
Subject: news: build graph.svg on change

---
 krebs/2configs/news.nix | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/krebs/2configs/news.nix b/krebs/2configs/news.nix
index 780c270bf..a6cf02c17 100644
--- a/krebs/2configs/news.nix
+++ b/krebs/2configs/news.nix
@@ -29,6 +29,36 @@
     "d /var/lib/brockman 1750 brockman nginx -"
   ];
 
+  systemd.services.brockman-graph = {
+    path = [
+      pkgs.graphviz
+      pkgs.jq
+      pkgs.inotifyTools
+    ];
+    serviceConfig = {
+      ExecStart = pkgs.writers.writeDash "brockman-graph" ''
+
+        while :; do
+          graphviz="$(cat /var/lib/brockman/brockman.json \
+            | jq -r '
+              .bots |
+              to_entries |
+              map(select(.value.extraChannels|length > 1 )) |
+              .[] |
+              "\"\(.key)\" -> {\(.value.extraChannels|map("\""+.+"\"")|join(" "))}"
+          ')"
+          echo "digraph news { $graphviz }" | circo -Tsvg > /var/lib/brockman/graph.svg
+
+          inotifywait -q -e MODIFY /var/lib/brockman/brockman.json
+        done
+      '';
+      User = "brockman";
+    };
+    wantedBy = [ "multi-user.target" ];
+  };
+
+  systemd.services.brockman.serviceConfig.LimitNOFILE = 16384;
+  systemd.services.brockman.environment.BROCKMAN_LOG_LEVEL = "DEBUG";
   krebs.brockman = {
     enable = true;
     config = {
@@ -57,6 +87,7 @@
             "#all"
             "#aluhut"
             "#news"
+            "#lasstube"
           ];
         };
       }
-- 
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