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|
#!/usr/bin/env ruby
# FIXME
$LOAD_PATH << "/home/pks/.local/lib/ruby/gems/json-2.3.1/lib/"
$LOAD_PATH << "/home/pks/.local/lib/ruby/gems/mqtt-0.5.0/lib/"
$LOAD_PATH << "/home/pks/.local/lib/ruby/gems/optimist-3.0.1/lib/"
$LOAD_PATH << "/home/pks/.local/lib/ruby/gems/sqlite3-1.4.2/lib/"
$LOAD_PATH << "/home/pks/.local/lib/ruby/gems/zipf-1.2.6/lib/"
require 'json'
require 'mqtt'
require 'optimist'
require 'sqlite3'
require 'time'
require 'zipf'
def shutdown
STDERR.write "Shutting down ...\n"
$db.close
$logfile.close
STDERR.write "Done!\n"
exit
end
Signal.trap("INT") { shutdown }
Signal.trap("TERM") { shutdown }
def db_open_or_new filename
if File.exists? filename
$db = SQLite3::Database.open filename
else
$db = SQLite3::Database.new filename
$db.execute <<-SQL
create table power_log(
id INTEGER PRIMARY KEY,
timestamp DATETIME,
device_name TEXT,
device_location TEXT,
total FLOAT,
total_start_time DATETIME
);
SQL
$db.execute <<-SQL
create table power_meter(
id INTEGER PRIMARY KEY,
timestamp DATETIME,
total FLOAT
);
SQL
end
end
def db_execute sql, data
3.times {
begin
$db.execute sql, data
break
rescue SQLite3::BusyException
STDERR.write "DB busy, skipping data point '#{d.to_s}'\n"
sleep 1
end
}
end
def parse_topic topic
parts = topic.split "/"
else
_, device_name, _, device_location_1, device_location_2, _ = parts
end
device_location = [device_location_1, device_location_2]
return device_name, device_location
end
def parse_message message
return JSON.parse message
end
def insert_power device_name, device_location, data
if data.has_key? "ENERGY"
timestamp = Time.parse(data["Time"]).utc.to_i
total_start_time = Time.parse(data["ENERGY"]["TotalStartTime"]).utc.to_i
db_execute \
"INSERT INTO power(timestamp, device_name, device_location_primary, device_location_secondary, total, total_start_time) VALUES(?,?,?,?,?,?)", \
[timestamp, device_name, device_location[0], device_location[1], data["ENERGY"]["Total"], total_start_time]
end
end
def main
options = Optimist::options do
opt :host, "MQTT hostname", :type => :string, :default => 'localhost', :short => '-h'
opt :port, "MQTT port", :type => :int, :default => 1883, :short => '-p'
opt :db, "SQLite3 database file", :type => :string, :required => true, :short => '-d'
opt :log, "Logfile", :type => :string, :required => true, :short => '-l'
end
db_open_or_new options[:db]
$logfile = WriteFile.new options[:log]
$mqtt_client = MQTT::Client.connect(
:host => options[:host],
:port => options[:port],
:ssl => false)
$mqtt_client.subscribe '#'
$mqtt_client.get do |topic,message|
begin
puts "#{topic}\t#{message}
#device_name, device_location = parse_topic topic
#data = parse_message message
#insert_power device_name, device_location, data
#$logfile.write "#{topic}\t#{message}\n"
rescue => exception
$logfile.write "[Ignoring]\t#{topic}\t#{message}\n"
end
end
shutdown
end
main
|
