stromzaehler

bundles/stromzaehler/files/stromzaehler

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+#!/bin/bash
+
+# gpiochip number + pin number
+gpio=$(expr 458 + 3)
+
+# prepare
+if ! [[ -e "/sys/class/gpio/gpio$gpio" ]]; then
+  echo $gpio > "/sys/class/gpio/export"
+fi
+echo in > "/sys/class/gpio/gpio$gpio/direction"
+
+# loop
+previous_state=false
+while sleep 0.001; do
+  state=$(cat "/sys/class/gpio/gpio$gpio/value")
+  if ! [[ "$state" = "$previous_state" ]] && [[ "$state" = 0 ]]
+  then
+    if ! [ -z $previous_impulse ] # skip first iteration
+    then
+      delay=$(expr $(date --utc +%s%N) - $previous_impulse)
+      impulse_per_hour=$(expr 3600000000000 / $delay)
+      watt=$(expr $impulse_per_hour / $(expr 2000 / 1000))
+      echo "$watt watts"
+      curl "https://${influxdb_domain}/api/v2/write?org=${influxdb_org}&bucket=${influxdb_bucket}&precision=ns" ${'\\'}
+        -X POST ${'\\'}
+        --header "Authorization: Token ${influxdb_token}" ${'\\'}
+        --header "Content-Type: text/plain; charset=utf-8" ${'\\'}
+        --header "Accept: application/json" ${'\\'}
+        --data-binary "powermeter,host=${node_name} watts=$watt" ${'\\'}
+        2&> /dev/null &
+    fi
+    previous_impulse=$(date --utc +%s%N)
+  fi
+  previous_state=$state
+done

bundles/stromzaehler/items.py

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+influxdb_metadata = repo.get_node(node.metadata.get('stromzaehler/influxdb_node')).metadata.get('influxdb')
+
+files = {
+    '/opt/stromzaehler': {
+        'content_type': 'mako',
+        'mode': '550',
+        'context': {
+            'node_name': node.name,
+            'influxdb_domain': influxdb_metadata['hostname'],
+            'influxdb_bucket': influxdb_metadata['bucket'],
+            'influxdb_org': influxdb_metadata['org'],
+            'influxdb_token': influxdb_metadata['admin_token'],
+        },
+        'triggers': [
+            'svc_systemd:stromzaehler:restart'
+        ],
+    },
+}
+
+svc_systemd = {
+    'stromzaehler': {
+        # 'enabled': False,
+        # 'running': False,
+        'needs': [
+            'file:/opt/stromzaehler',
+        ],
+    }
+}

bundles/stromzaehler/metadata.py

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+defaults = {
+    'apt': {
+        'packages': {
+            'curl': {},
+            'gpiod': {},
+        },
+    },
+    'systemd': {
+        'units': {
+            'stromzaehler.service': {
+                'Unit': {
+                    'Description': 'stromzaehler',
+                    'After': 'network.target',
+                },
+                'Service': {
+                    'ExecStart': '/opt/stromzaehler',
+                },
+                'Install': {
+                    'WantedBy': {'multi-user.target'},
+                },
+            },
+        },
+    },
+}

nodes/home.stromzaehler.py

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+{
+    'hostname': '10.0.0.15',
+    'groups': [
+        'debian-11',
+        'raspberry-pi',
+        'monitored',
+    ],
+    'bundles': [
+        'stromzaehler',
+    ],
+    'metadata': {
+        'id': 'dd521b8a-dc03-43f5-b29f-068f948ba3b8',
+        'network': {
+            'internal': {
+                'interface': 'eth0',
+                'ipv4': '10.0.0.15/24',
+                'gateway4': '10.0.0.1',
+            },
+        },
+        'stromzaehler': {
+            'influxdb_node': 'home.server',
+        },
+    },
+}