friso/rpi-mqtt-monitor
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This commit is contained in:
Hristo Jelev
2021-11-16 23:25:26 +02:00
parent e298c4da3f
commit b62fa8e47c
1 changed files with 200 additions and 178 deletions
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42
src/rpi-cpu2mqtt.py
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@@ -21,6 +21,7 @@ def check_used_space(path):
used_space = int(100 - ((free_space / total_space) * 100))
return used_space
def check_cpu_load():
# bash command to get cpu load from uptime command
p = subprocess.Popen("uptime", shell=True, stdout=subprocess.PIPE).communicate()[0]
@@ -30,6 +31,7 @@ def check_cpu_load():
cpu_load = round(float(cpu_load), 1)
return cpu_load
def check_voltage():
try:
full_cmd = "vcgencmd measure_volts | cut -f2 -d= | sed 's/000//'"
@@ -39,18 +41,21 @@ def check_voltage():
voltage = 0
return voltage
def check_swap():
full_cmd = "free -t | awk 'NR == 3 {print $3/$2*100}'"
swap = subprocess.Popen(full_cmd, shell=True, stdout=subprocess.PIPE).communicate()[0]
swap = round(float(swap.decode("utf-8").replace(",", ".")), 1)
return swap
def check_memory():
full_cmd = "free -t | awk 'NR == 2 {print $3/$2*100}'"
memory = subprocess.Popen(full_cmd, shell=True, stdout=subprocess.PIPE).communicate()[0]
memory = round(float(memory.decode("utf-8").replace(",", ".")))
return memory
def check_cpu_temp():
full_cmd = "cat /sys/class/thermal/thermal_zone*/temp 2> /dev/null | sed 's/\(.\)..$//' | tail -n 1"
try:
@@ -60,14 +65,17 @@ def check_cpu_temp():
cpu_temp = 0
return cpu_temp
def check_sys_clock_speed():
full_cmd = "awk '{printf (\"%0.0f\",$1/1000); }' </sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq"
return subprocess.Popen(full_cmd, shell=True, stdout=subprocess.PIPE).communicate()[0]
def check_uptime():
full_cmd = "awk '{print int($1/3600/24)}' /proc/uptime"
return int(subprocess.Popen(full_cmd, shell=True, stdout=subprocess.PIPE).communicate()[0])
def config_json(what_config):
data = {
"state_topic": "",
@@ -115,7 +123,9 @@ def config_json(what_config):
# Return our built discovery config
return json.dumps(data)
def publish_to_mqtt (cpu_load = 0, cpu_temp = 0, used_space = 0, voltage = 0, sys_clock_speed = 0, swap = 0, memory = 0, uptime_days = 0):
def publish_to_mqtt(cpu_load=0, cpu_temp=0, used_space=0, voltage=0, sys_clock_speed=0, swap=0, memory=0,
uptime_days=0):
# connect to mqtt server
client = paho.Client()
client.username_pw_set(config.mqtt_user, config.mqtt_password)
@@ -124,56 +134,67 @@ def publish_to_mqtt (cpu_load = 0, cpu_temp = 0, used_space = 0, voltage = 0, sy
# publish monitored values to MQTT
if config.cpu_load:
if config.discovery_messages:
client.publish("homeassistant/sensor/"+config.mqtt_topic_prefix+"/"+hostname+"_cpuload/config", config_json('cpuload'), qos=0)
client.publish("homeassistant/sensor/" + config.mqtt_topic_prefix + "/" + hostname + "_cpuload/config",
config_json('cpuload'), qos=0)
time.sleep(config.sleep_time)
client.publish(config.mqtt_topic_prefix + "/" + hostname + "/cpuload", cpu_load, qos=1)
time.sleep(config.sleep_time)
if config.cpu_temp:
if config.discovery_messages:
client.publish("homeassistant/sensor/"+config.mqtt_topic_prefix+"/"+hostname+"_cputemp/config", config_json('cputemp'), qos=0)
client.publish("homeassistant/sensor/" + config.mqtt_topic_prefix + "/" + hostname + "_cputemp/config",
config_json('cputemp'), qos=0)
time.sleep(config.sleep_time)
client.publish(config.mqtt_topic_prefix + "/" + hostname + "/cputemp", cpu_temp, qos=1)
time.sleep(config.sleep_time)
if config.used_space:
if config.discovery_messages:
client.publish("homeassistant/sensor/"+config.mqtt_topic_prefix+"/"+hostname+"_diskusage/config", config_json('diskusage'), qos=0)
client.publish("homeassistant/sensor/" + config.mqtt_topic_prefix + "/" + hostname + "_diskusage/config",
config_json('diskusage'), qos=0)
time.sleep(config.sleep_time)
client.publish(config.mqtt_topic_prefix + "/" + hostname + "/diskusage", used_space, qos=1)
time.sleep(config.sleep_time)
if config.voltage:
if config.discovery_messages:
client.publish("homeassistant/sensor/"+config.mqtt_topic_prefix+"/"+hostname+"_voltage/config", config_json('voltage'), qos=0)
client.publish("homeassistant/sensor/" + config.mqtt_topic_prefix + "/" + hostname + "_voltage/config",
config_json('voltage'), qos=0)
time.sleep(config.sleep_time)
client.publish(config.mqtt_topic_prefix + "/" + hostname + "/voltage", voltage, qos=1)
time.sleep(config.sleep_time)
if config.swap:
if config.discovery_messages:
client.publish("homeassistant/sensor/"+config.mqtt_topic_prefix+"/"+hostname+"_swap/config", config_json('swap'), qos=0)
client.publish("homeassistant/sensor/" + config.mqtt_topic_prefix + "/" + hostname + "_swap/config",
config_json('swap'), qos=0)
time.sleep(config.sleep_time)
client.publish(config.mqtt_topic_prefix + "/" + hostname + "/swap", swap, qos=1)
time.sleep(config.sleep_time)
if config.memory:
if config.discovery_messages:
client.publish("homeassistant/sensor/"+config.mqtt_topic_prefix+"/"+hostname+"_memory/config", config_json('memory'), qos=0)
client.publish("homeassistant/sensor/" + config.mqtt_topic_prefix + "/" + hostname + "_memory/config",
config_json('memory'), qos=0)
time.sleep(config.sleep_time)
client.publish(config.mqtt_topic_prefix + "/" + hostname + "/memory", memory, qos=1)
time.sleep(config.sleep_time)
if config.sys_clock_speed:
if config.discovery_messages:
client.publish("homeassistant/sensor/"+config.mqtt_topic_prefix+"/"+hostname+"_sys_clock_speed/config", config_json('sys_clock_speed'), qos=0)
client.publish(
"homeassistant/sensor/" + config.mqtt_topic_prefix + "/" + hostname + "_sys_clock_speed/config",
config_json('sys_clock_speed'), qos=0)
time.sleep(config.sleep_time)
client.publish(config.mqtt_topic_prefix + "/" + hostname + "/sys_clock_speed", sys_clock_speed, qos=1)
time.sleep(config.sleep_time)
if config.uptime:
if config.discovery_messages:
client.publish("homeassistant/sensor/"+config.mqtt_topic_prefix+"/"+hostname+"_uptime_days/config", config_json('uptime_days'), qos=0)
client.publish("homeassistant/sensor/" + config.mqtt_topic_prefix + "/" + hostname + "_uptime_days/config",
config_json('uptime_days'), qos=0)
time.sleep(config.sleep_time)
client.publish(config.mqtt_topic_prefix + "/" + hostname + "/uptime_days", uptime_days, qos=1)
time.sleep(config.sleep_time)
# disconect from mqtt server
client.disconnect()
def bulk_publish_to_mqtt (cpu_load = 0, cpu_temp = 0, used_space = 0, voltage = 0, sys_clock_speed = 0, swap = 0, memory = 0, uptime_days = 0):
def bulk_publish_to_mqtt(cpu_load=0, cpu_temp=0, used_space=0, voltage=0, sys_clock_speed=0, swap=0, memory=0,
uptime_days=0):
# compose the CSV message containing the measured values
values = cpu_load, float(cpu_temp), used_space, float(voltage), int(sys_clock_speed), swap, memory, uptime_days
@@ -190,6 +211,7 @@ def bulk_publish_to_mqtt (cpu_load = 0, cpu_temp = 0, used_space = 0, voltage =
# disconect from mqtt server
client.disconnect()
if __name__ == '__main__':
# set all monitored values to False in case they are turned off in the config
cpu_load = cpu_temp = used_space = voltage = sys_clock_speed = swap = memory = uptime_days = False