simple avls script to get avls data out of db

server/scripts/popufare-avls

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+#!/bin/bash
+#
+# Copyright (c) 2020 Clementine Computing LLC.
+#
+# This file is part of PopuFare.
+#
+# PopuFare is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# PopuFare is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with PopuFare.  If not, see <https://www.gnu.org/licenses/>.
+#
+
+
+# A simple script ot query the AVLS data and format it out nicely.
+# This is a rough draft and should be considered experimental
+#
+# NOTE: this assumes the existence of a 'db-config' file that holds database
+# credential information. For example:
+#
+# $ cat db-config
+# [client]
+# database=popufare
+# user=u
+# password=p
+#
+# usage:
+#
+#  ./popufave-avls '2020-11-05 00:00:00'
+#
+#
+
+querytd="$1"
+
+if [[ "$1" == "" ]] ; then
+  querytd=`date --date '-10 min' +'%Y-%m-%d %H:%M:%S'`
+fi
+
+cat <<EOF | mysql --defaults-file=db-config | tr ',' '_' | tr '\t' ','
+set @ts = "$querytd";
+
+select
+    a.equip_num as vehicle_id,
+    floor(a.latitude/100.0) +  ((a.latitude -  (100.0*floor(a.latitude/100.0)))/60.0)  as vehicle_lat,
+    floor(a.longitude/100.0) + ((a.longitude - (100.0*floor(a.longitude/100.0)))/60.0) as vehicle_lon,
+-- a.latitude as vehicle_lat,
+-- a.longitude as vehicle_lon,
+
+    a.heading as vehicle_bearing,
+    a.chirp_time as vehicle_timestamp,
+    a.velocity as vehicle_velocity,
+    a.route as route_id,
+    concat(convert(a.route, char), '_', convert(a.trip, char)) trip_id,
+
+
+    floor(s.latitude/100.0)  + ((s.latitude -  (100.0*floor(s.latitude/100.0)))/60.0)  as stop_lat,
+    floor(s.longitude/100.0) + ((s.longitude - (100.0*floor(s.longitude/100.0)))/60.0) as stop_lon,
+-- s.latitude as stop_lat,
+-- s.longitude as stop_lon,
+
+    s.name as stop_name
+
+from 
+  avls_data a,
+  stops s, 
+  paddles p
+where 
+      a.paddle = p.id
+  and a.route = p.route
+  and a.trip = p.trip
+  and ( (a.stop = 0 and p.stop is null) or
+        (a.stop = p.stop) )
+  and p.stopid = s.id
+  and a.chirp_time >= @ts
+order by chirp_time desc ;
+EOF
+
+