From 5af2f438441c46bc508a038303b6e36946f7f5d4 Mon Sep 17 00:00:00 2001
From: makefu <github@syntax-fehler.de>
Date: Thu, 28 Dec 2017 16:06:49 +0100
Subject: ma stats.airsensor: generate Topic receiver

---
 makefu/2configs/stats/telegraf/airsensor.nix | 36 +++++++++++++++++++++++++---
 1 file changed, 33 insertions(+), 3 deletions(-)

diff --git a/makefu/2configs/stats/telegraf/airsensor.nix b/makefu/2configs/stats/telegraf/airsensor.nix
index 09d23e7d4..9d481000f 100644
--- a/makefu/2configs/stats/telegraf/airsensor.nix
+++ b/makefu/2configs/stats/telegraf/airsensor.nix
@@ -1,11 +1,36 @@
 { pkgs, ...}:
-
-{
+let
+  genTopic = name: topic: tags: {
+      servers = [ "tcp://localhost:1883" ];
+      qos = 0;
+      connection_timeout = "30s";
+      topics = [ topic ];
+      tags = tags;
+      persistent_session = false;
+      name_override = name;
+      data_format = "value";
+      data_type = "float";
+    };
+  bamStat = stat:   # Temperature or Humidity
+            host:   # easy{1-4}
+            sensor: # dht11, dht22, ds18
+            (genTopic stat
+                      "/bam/${host}/${sensor}/${stat}"
+                      {"host" = host;
+                       "scope" = "bam";
+                       "sensor" = sensor;
+                      } );
+  dht22 = host: [(bamStat "Temperature" host "dht22")
+                 (bamStat "Humidity" host "dht22")];
+  dht11 = host: [(bamStat "Temperature" host "dht11")
+                 (bamStat "Humidity" host "dht11")];
+  ds18 = host:  [(bamStat "Temperature" host "ds18")];
+in {
   services.udev.extraRules = ''
     SUBSYSTEMS=="usb", ATTRS{product}=="iAQ Stick", GROUP="input"
   '';
   users.users.telegraf.extraGroups = [ "input" ];
-  services.telegraf.extraConfig.inputs.exec = [
+  services.telegraf.extraConfig.inputs.exec =  [
     {
       commands = [ "${pkgs.airsensor-py}/bin/airsensor-py"];
       timeout = "10s";
@@ -16,4 +41,9 @@
       tags.unit="VOC";
     }
   ];
+  services.telegraf.extraConfig.inputs.mqtt_consumer =
+       (dht22 "easy1")
+    ++ (dht22 "easy2")
+    ++ (dht11 "easy3")
+    ++ (ds18  "easy3");
 }
-- 
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