esphome/esphomeyaml/mqtt.py

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from __future__ import print_function
import hashlib
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import logging
from datetime import datetime
import paho.mqtt.client as mqtt
from esphomeyaml import core
from esphomeyaml.const import CONF_BROKER, CONF_DISCOVERY_PREFIX, CONF_ESPHOMEYAML, \
CONF_LOG_TOPIC, \
CONF_MQTT, CONF_NAME, CONF_PASSWORD, CONF_PORT, CONF_TOPIC_PREFIX, \
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CONF_USERNAME
from esphomeyaml.helpers import color
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_LOGGER = logging.getLogger(__name__)
def initialize(config, subscriptions, on_message, username, password, client_id):
def on_connect(client, userdata, flags, return_code):
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for topic in subscriptions:
client.subscribe(topic)
client = mqtt.Client(client_id or u'')
client.on_connect = on_connect
client.on_message = on_message
if username is None:
if config[CONF_MQTT].get(CONF_USERNAME):
client.username_pw_set(config[CONF_MQTT][CONF_USERNAME],
config[CONF_MQTT][CONF_PASSWORD])
elif username:
client.username_pw_set(username, password)
client.connect(config[CONF_MQTT][CONF_BROKER], config[CONF_MQTT][CONF_PORT])
try:
client.loop_forever()
except KeyboardInterrupt:
pass
return 0
def show_logs(config, topic=None, username=None, password=None, client_id=None, escape=False):
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if topic is not None:
pass # already have topic
elif CONF_MQTT in config:
conf = config[CONF_MQTT]
if CONF_LOG_TOPIC in conf:
topic = config[CONF_MQTT][CONF_LOG_TOPIC]
elif CONF_TOPIC_PREFIX in config[CONF_MQTT]:
topic = config[CONF_MQTT][CONF_TOPIC_PREFIX] + u'/debug'
else:
topic = config[CONF_ESPHOMEYAML][CONF_NAME] + u'/debug'
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else:
_LOGGER.error(u"MQTT isn't setup, can't start MQTT logs")
return 1
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_LOGGER.info(u"Starting log output from %s", topic)
def on_message(client, userdata, msg):
time = datetime.now().time().strftime(u'[%H:%M:%S]')
message = msg.payload.decode('utf-8')
if escape:
message = message.replace('\033', '\\033')
print(time + message)
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return initialize(config, [topic], on_message, username, password, client_id)
def clear_topic(config, topic, username=None, password=None, client_id=None):
if topic is None:
discovery_prefix = config[CONF_MQTT].get(CONF_DISCOVERY_PREFIX, u'homeassistant')
name = config[CONF_ESPHOMEYAML][CONF_NAME]
topic = u'{}/+/{}/#'.format(discovery_prefix, name)
_LOGGER.info(u"Clearing messages from %s", topic)
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def on_message(client, userdata, msg):
if not msg.payload:
return
print(u"Clearing topic {}".format(msg.topic))
client.publish(msg.topic, None, retain=True)
return initialize(config, [topic], on_message, username, password, client_id)
# From marvinroger/async-mqtt-client -> scripts/get-fingerprint/get-fingerprint.py
def get_fingerprint(config):
import ssl
addr = config[CONF_MQTT][CONF_BROKER], config[CONF_MQTT][CONF_PORT]
_LOGGER.info("Getting fingerprint from %s:%s", addr[0], addr[1])
try:
cert_pem = ssl.get_server_certificate(addr)
except IOError as err:
_LOGGER.error("Unable to connect to server: %s", err)
return 1
cert_der = ssl.PEM_cert_to_DER_cert(cert_pem)
sha1 = hashlib.sha1(cert_der).hexdigest()
print(u"SHA1 Fingerprint: " + color('cyan', sha1))
print(u"Copy above string into mqtt.ssl_fingerprints section of {}".format(core.CONFIG_PATH))
return 0