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from __future__ import print_function
import mysql.connector
from mysql.connector import errorcode
from datetime import datetime
class DB_Stats:
TABLES={}
TABLES['Usages'] = (
"CREATE TABLE `Usages` ("
" `ts` TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,"
" `user_hash` CHAR(40) NOT NULL,"
" `resource_name` CHAR(80),"
" `start_date` TIMESTAMP NOT NULL,"
" `data_type` CHAR (30) NOT NULL,"
" `data` INTEGER NOT NULL,"
" PRIMARY KEY (`user_hash`,`start_date`,`resource_name`, `data_type`)"
" )")
TABLES['Resources'] = (
"CREATE TABLE Resources ("
" `name` CHAR(250),"
" PRIMARY KEY (name)"
" )")
TABLES['Users'] = (
"CREATE TABLE Users("
" `hash` CHAR (40) NOT NULL,"
" `uuid` CHAR (32) NOT NULL,"
" `machine_sn` CHAR(80),"
" `age` INTEGER NOT NULL,"
" `school` CHAR(80),"
" `sw_version` CHAR (80),"
" `ts` TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,"
" PRIMARY KEY (hash)"
" )")
TABLES['Runs'] = (
"CREATE TABLE Runs("
" `last_ts` TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP "
")")
def __init__(self, db_name, user, password):
self.db_name = db_name
self.user = user
self.password = password
def create_database(self, cursor):
try:
cursor.execute(
"CREATE DATABASE {} DEFAULT CHARACTER SET 'utf8'".format(self.db_name))
except mysql.connector.Error as err:
raise Exception ("Failed creating database: {}".format(err))
def create_tables(self, cursor):
for name, ddl in self.TABLES.iteritems():
try:
print("Creating table {}: ".format(name), end='')
cursor.execute(ddl)
except mysql.connector.Error as err:
if err.errno == errorcode.ER_TABLE_EXISTS_ERROR:
print("already exists.")
else:
raise Exception ("Error: {}".format(err))
else:
print("OK")
def create (self):
self.cnx = mysql.connector.connect(user=self.user, password=self.password)
cursor = self.cnx.cursor()
"""Try connect to db """
try:
self.cnx.database = self.db_name
print("DB ["+self.db_name+"] created already, will try create tables:" )
self.create_tables(cursor)
except mysql.connector.Error as err:
"""If db not exist, then create"""
if err.errno == errorcode.ER_BAD_DB_ERROR:
self.create_database(cursor)
self.cnx.database = self.db_name
self.create_tables(cursor)
else:
raise Exception ("Error: {}".format(err))
cursor.close()
def close (self):
self.cnx.close()
def store_activity_uptime(self, rrd):
self.store_resource(rrd.get_name())
self.store_user(rrd)
cursor = self.cnx.cursor()
insert = ("INSERT INTO Usages "
"(user_hash, "
"resource_name, "
"start_date, "
"data_type, "
"data) "
"VALUES (%s, %s, %s, %s ,%s) ")
for d in rrd.get_uptime_by_interval():
info = (rrd.get_user_hash(), rrd.get_name() , datetime.fromtimestamp(float(d[0])), 'uptime', d[1])
try:
cursor.execute(insert, info)
if self.update_last_record(rrd.get_date_last_record()) == 0:
self.cnx.commit()
except mysql.connector.Error as err:
print("Fail {}: {}".format(cursor.statement, err))
cursor.close()
def store_resource(self, resource_name):
cursor = self.cnx.cursor()
op = ("SELECT name FROM Resources WHERE name = %s")
params = (resource_name,)
try:
cursor.execute(op, params)
result = cursor.fetchone()
if result != None:
print("Resource {} already in db".format(resource_name))
else:
insert = ("INSERT INTO Resources (name) VALUES (%s)")
info = (resource_name, )
cursor.execute(insert, info)
self.cnx.commit()
except mysql.connector.Error as err:
print("Fail {}: {}".format(cursor.statement, err))
cursor.close()
def store_user (self, rrd):
cursor = self.cnx.cursor()
op = ("SELECT hash FROM Users WHERE hash = %s")
params = (rrd.get_user_hash(), )
try:
cursor.execute(op, params)
result = cursor.fetchone()
if result != None:
print("User {} already in db".format(rrd.user_hash))
else:
"""FIXME change hardcoded values """
insert = ("INSERT INTO Users (hash, uuid, machine_sn, age, school, sw_version) VALUES (%s, %s, %s, %s, %s, %s)")
params = (rrd.get_user_hash(), rrd.get_uuid(), "unk_machine_sn", 0, "unk_escuela", "1.0.0")
cursor.execute(insert, params)
self.cnx.commit()
except mysql.connector.Error as err:
print("Fail {}: {}".format(cursor.statement, err))
cursor.close()
def update_last_record (self, ts):
cursor = self.cnx.cursor()
res = 0
op = ("SELECT * FROM Runs")
params = (datetime.fromtimestamp(float(ts)),)
try:
cursor.execute(op)
result = cursor.fetchone()
if result != None:
op = ("UPDATE Runs SET last_ts = %s")
cursor.execute(op, params)
self.cnx.commit()
else:
op = ("INSERT INTO Runs VALUES(%s)")
cursor.execute(op, params)
self.cnx.commit()
except mysql.connector.Error as err:
print("Fail {}: {}".format(cursor.statement, err))
res = -1
cursor.close()
return res
def get_date_last_record (self):
cursor = self.cnx.cursor()
op = ("SELECT UNIX_TIMESTAMP ((SELECT last_ts FROM Runs))")
try:
cursor.execute(op)
result = cursor.fetchone()
if result != None:
print ("last record: {}".format(result[0]))
return result[0]
else:
print ("Last date record is None")
return 0
except mysql.connector.Error as err:
print("Fail {}: {}".format(cursor.statement, err))
cursor.close()
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