Added fetching mikrotik POE usage to InfluxDB too

1 files changed, 96 insertions, 0 deletions

diff --git a/switch-snmp/snmpOmada.py b/switch-snmp/snmpOmada.py
new file mode 100644
index 0000000..f1546a7
--- /dev/null
+++ b/switch-snmp/snmpOmada.py
@@ -0,0 +1,96 @@
+# wget https://static.tp-link.com/upload/software/2022/202209/20220915/privateMibs(20220831).zip
+# cp -v *.mib /home/eden/.snmp/mibs
+# sudo apt install snmp
+# sudo apt-get install snmp-mibs-downloader
+
+import subprocess
+from dataclasses import dataclass
+import dotenv
+import os
+import pandas
+import configparser
+
+from influxdb_client import InfluxDBClient, Point, WritePrecision
+from influxdb_client.client.write_api import SYNCHRONOUS
+
+DIVIDE_BY_10_ENDPOINTS = ["tpPoePower", "tpPoeVoltage"]
+
+@dataclass
+class SNMPReading:
+    endpoint: str
+    port: int
+    reading: float
+
+    @classmethod
+    def from_string(cls, str_):
+        s = str_.split()
+        if len(s) != 4:
+            raise Exception("Couldn't parse")
+        endpoint_and_port, _, type_, reading = s
+        endpoint, port = endpoint_and_port.split(".")
+
+        if reading.isdigit():
+            reading = int(reading)
+        if endpoint in DIVIDE_BY_10_ENDPOINTS:
+            reading = reading / 10
+
+        return cls(endpoint, int(port), reading)
+
+def get_alternate_name(port, host):
+    port_names = configparser.ConfigParser()
+    port_names.read(os.path.join(os.path.dirname(__file__), "omada-switches.conf"))
+    port_names = {int(k): v for k, v in port_names[host].items()}
+
+    try:
+        return port_names[port]
+    except KeyError:
+        return port
+
+def snmp_walk(host):
+    proc = subprocess.Popen(
+        ["snmpwalk", "-Os", "-c", "tplink", "-v", "2c", "-m", "TPLINK-POWER-OVER-ETHERNET-MIB", host, "tplinkPowerOverEthernetMIB"],
+        stdout = subprocess.PIPE
+    )
+    out = []
+    while True:
+        line = proc.stdout.readline()
+        if not line:
+            break
+        try:
+            out.append(SNMPReading.from_string(line.rstrip().decode()))
+        except Exception:
+            pass
+
+    return out
+
+def readings_to_points(readings, switch_host):
+    points = []
+    df = pandas.DataFrame(readings)
+    df["port_name"] = df["port"].apply(get_alternate_name, args = (switch_host, ))
+    for p, group_df in df.groupby(["port", "port_name"]):
+        port, port_name = p
+        fields = dict(zip(group_df['endpoint'], group_df['reading']))
+
+        points.append({
+            "measurement": "switch_status", 
+            "tags": {"port": port, "port_name": port_name, "switch_host": switch_host, "type": "Omada"}, 
+            "fields": fields
+        })
+    
+    return points
+
+def get_points():
+    if not os.path.exists(os.path.join(os.path.dirname(__file__), "omada-switches.conf")):
+        raise FileNotFoundError("Couldn't find config file")
+    switches = configparser.ConfigParser()
+    switches.read(os.path.join(os.path.dirname(__file__), "omada-switches.conf"))
+    points = []
+    for switch_host in switches.sections():
+        points += readings_to_points(snmp_walk(switch_host), switch_host)
+    return points
+
+if __name__ == "__main__":
+    import mikrotik
+    points = get_points()
+    print(points)
+    mikrotik.append(points)
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