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import bsddb
import psycopg2
from subprocess import Popen,PIPE
import time
import sys
db = bsddb.btopen("test.btdbm")
conn = psycopg2.connect("dbname=ebus user=ebus")
cur = conn.cursor()
sql = """SELECT * from sensor"""
cur.execute(sql)
sensors = cur.fetchall()
sensors = map(lambda a: (a[0], a[1]), sensors)
sensors = dict(sensors)
cur.close()
conn.close()
pg_dump = Popen(["psql","-A","-t"], stdin=PIPE, stdout=PIPE)
pg_dump.stdin.write("COPY value TO stdout WITH DELIMITER '|' NULL AS '';\n")
pg_dump.stdin.close()
c=0
try:
while not pg_dump.stdout.closed:
line = pg_dump.stdout.readline()
c += 1
if line == "":
continue
(oid, s_timestamp, sensor_id, type, value_float, value_int, value_string) = line.split("|")
name = sensors[int(sensor_id)]
timestamp = time.strptime(s_timestamp.split(".")[0], "%Y-%m-%d %H:%M:%S")
timestamp = time.mktime(timestamp)
if type == "int":
value= value_int
elif type == "float":
value = value_float
else:
continue
db["%s:%d"%(name,timestamp)] = value
if c%10000==0:
print "%d: %s:%s=%s"%(c,name,s_timestamp,value)
except KeyboardInterrupt:
db.close()
print "done"
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