137 lines
5.6 KiB
Python
137 lines
5.6 KiB
Python
#
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# Copyright 2010 Nick Foster
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#
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# This file is part of gr-air-modes
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#
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# gr-air-modes is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3, or (at your option)
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# any later version.
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#
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# gr-air-modes is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with gr-air-modes; see the file COPYING. If not, write to
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# the Free Software Foundation, Inc., 51 Franklin Street,
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# Boston, MA 02110-1301, USA.
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#
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import time, os, sys, threading
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from string import split, join
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import air_modes
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import sqlite3
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from air_modes.exceptions import *
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from gnuradio.gr.pubsub import pubsub
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class output_sql:
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def __init__(self, cpr, filename, lock, publisher):
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#pubsub.__init__(self)
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self._cpr = cpr
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self._lock = lock;
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#create the database
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self.filename = filename
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self._db = sqlite3.connect(filename)
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#now execute a schema to create the tables you need
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c = self._db.cursor()
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query = """CREATE TABLE IF NOT EXISTS "positions" (
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"icao" INTEGER KEY NOT NULL,
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"seen" TEXT NOT NULL,
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"alt" INTEGER,
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"lat" REAL,
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"lon" REAL
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);"""
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c.execute(query)
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query = """CREATE TABLE IF NOT EXISTS "vectors" (
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"icao" INTEGER KEY NOT NULL,
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"seen" TEXT NOT NULL,
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"speed" REAL,
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"heading" REAL,
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"vertical" REAL
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);"""
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c.execute(query)
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query = """CREATE TABLE IF NOT EXISTS "ident" (
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"icao" INTEGER PRIMARY KEY NOT NULL,
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"ident" TEXT NOT NULL
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);"""
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c.execute(query)
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c.close()
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self._db.commit()
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#we close the db conn now to reopen it in the output() thread context.
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self._db.close()
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self._db = None
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publisher.subscribe("type17_dl", self.insert)
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def insert(self, message):
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with self._lock:
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try:
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#we're checking to see if the db is empty, and creating the db object
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#if it is. the reason for this is so that the db writing is done within
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#the thread context of output(), rather than the thread context of the
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#constructor.
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if self._db is None:
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self._db = sqlite3.connect(self.filename)
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query = self.make_insert_query(message)
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if query is not None:
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c = self._db.cursor()
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c.execute(query)
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c.close()
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# self._db.commit()
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except ADSBError:
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pass
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def make_insert_query(self, msg):
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#assembles a SQL query tailored to our database
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#this version ignores anything that isn't Type 17 for now, because we just don't care
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query = None
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msgtype = msg.data["df"]
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if msgtype == 17:
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query = self.sql17(msg.data)
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#self["new_adsb"] = data["aa"] #publish change notification
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return query
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#TODO: if there's a way to publish selective reports on upsert to distinguish,
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#for instance, between a new ICAO that's just been heard, and a refresh of an
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#existing ICAO, both of those would be useful publishers for the GUI model.
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#otherwise, worst-case you can just refresh everything every time a report
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#comes in, but it's going to use more CPU. Not likely a problem if you're only
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#looking at ADS-B (no mode S) data.
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#It's probably time to look back at the Qt SQL table model and see if it can be
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#bent into shape for you.
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def sql17(self, data):
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icao24 = data["aa"]
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bdsreg = data["me"].get_type()
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#self["bds%.2i" % bdsreg] = icao24 #publish under "bds08", "bds06", etc.
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if bdsreg == 0x08:
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(msg, typename) = air_modes.parseBDS08(data)
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return "INSERT OR REPLACE INTO ident (icao, ident, type) VALUES (" + "%i" % icao24 + ", '" + msg + "', '" + typename + "')"
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elif bdsreg == 0x06:
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[ground_track, decoded_lat, decoded_lon, rnge, bearing] = air_modes.parseBDS06(data, self._cpr)
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altitude = 0
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if decoded_lat is None: #no unambiguously valid position available
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raise CPRNoPositionError
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else:
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return "INSERT INTO positions (icao, seen, alt, lat, lon) VALUES (" + "%i" % icao24 + ", datetime('now'), " + str(altitude) + ", " + "%.6f" % decoded_lat + ", " + "%.6f" % decoded_lon + ")"
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elif bdsreg == 0x05:
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[altitude, decoded_lat, decoded_lon, rnge, bearing] = air_modes.parseBDS05(data, self._cpr)
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if decoded_lat is None: #no unambiguously valid position available
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raise CPRNoPositionError
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else:
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return "INSERT INTO positions (icao, seen, alt, lat, lon) VALUES (" + "%i" % icao24 + ", datetime('now'), " + str(altitude) + ", " + "%.6f" % decoded_lat + ", " + "%.6f" % decoded_lon + ")"
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elif bdsreg == 0x09:
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subtype = data["bds09"].get_type()
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if subtype == 0:
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[velocity, heading, vert_spd, turnrate] = air_modes.parseBDS09_0(data)
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return "INSERT INTO vectors (icao, seen, speed, heading, vertical) VALUES (" + "%i" % icao24 + ", datetime('now'), " + "%.0f" % velocity + ", " + "%.0f" % heading + ", " + "%.0f" % vert_spd + ")"
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elif subtype == 1:
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[velocity, heading, vert_spd] = air_modes.parseBDS09_1(data)
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return "INSERT INTO vectors (icao, seen, speed, heading, vertical) VALUES (" + "%i" % icao24 + ", datetime('now'), " + "%.0f" % velocity + ", " + "%.0f" % heading + ", " + "%.0f" % vert_spd + ")"
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else:
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raise NoHandlerError
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