| 1 | ############################################################################## |
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| 2 | # |
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| 3 | # DSAGE: Distributed SAGE |
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| 4 | # |
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| 5 | # Copyright (C) 2006, 2007 Yi Qiang <yqiang@gmail.com> |
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| 6 | # |
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| 7 | # Distributed under the terms of the GNU General Public License (GPL) |
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| 8 | # |
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| 9 | # This code is distributed in the hope that it will be useful, |
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| 10 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | # General Public License for more details. |
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| 13 | # |
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| 14 | # The full text of the GPL is available at: |
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| 15 | # |
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| 16 | # http://www.gnu.org/licenses/ |
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| 17 | # |
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| 18 | ############################################################################## |
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| 19 | |
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| 20 | import datetime |
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| 21 | import os |
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| 22 | import sqlite3 |
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| 23 | |
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| 24 | from twisted.python import log |
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| 25 | |
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| 26 | import sage.dsage.database.sql_functions as sql_functions |
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| 27 | from sage.dsage.misc.constants import DSAGE_DIR |
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| 28 | |
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| 29 | class MonitorDatabase(object): |
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| 30 | """ |
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| 31 | This table keeps track of workers. |
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| 32 | |
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| 33 | """ |
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| 34 | |
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| 35 | CREATE_MONITOR_TABLE = """CREATE TABLE monitors |
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| 36 | ( |
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| 37 | uuid text NOT NULL UNIQUE, |
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| 38 | hostname TEXT, |
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| 39 | ip TEXT, |
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| 40 | workers INTEGER, |
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| 41 | sage_version text, |
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| 42 | os text, |
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| 43 | kernel_version TEXT, |
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| 44 | cpus INTEGER, |
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| 45 | cpu_speed INTEGER, |
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| 46 | cpu_model TEXT, |
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| 47 | mem_total INTEGER, |
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| 48 | mem_free INTEGER, |
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| 49 | connected BOOL, |
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| 50 | busy BOOL, |
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| 51 | anonymous BOOL DEFAULT 0, |
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| 52 | last_connection timestamp |
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| 53 | ) |
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| 54 | """ |
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| 55 | |
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| 56 | def __init__(self, db_file=os.path.join(DSAGE_DIR, 'db', 'dsage.db'), |
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| 57 | log_file=os.path.join(DSAGE_DIR, 'server.log'), log_level=0, |
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| 58 | test=False): |
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| 59 | self.tablename = 'monitors' |
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| 60 | if test: |
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| 61 | self.db_file = 'monitordb_test.db' |
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| 62 | self.log_level = 5 |
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| 63 | self.log_file = 'monitordb_test.log' |
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| 64 | else: |
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| 65 | self.db_file = db_file |
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| 66 | self.log_file = log_file |
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| 67 | self.log_level = log_level |
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| 68 | if not os.path.exists(self.db_file): |
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| 69 | dir, file = os.path.split(self.db_file) |
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| 70 | if not os.path.isdir(dir): |
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| 71 | os.mkdir(dir) |
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| 72 | self.con = sqlite3.connect(self.db_file, |
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| 73 | isolation_level=None, |
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| 74 | detect_types=sqlite3.PARSE_DECLTYPES|sqlite3.PARSE_COLNAMES) |
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| 75 | sql_functions.optimize_sqlite(self.con) |
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| 76 | self.con.text_factory = str |
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| 77 | |
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| 78 | if sql_functions.table_exists(self.con, self.tablename) is None: |
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| 79 | sql_functions.create_table(self.con, |
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| 80 | self.tablename, |
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| 81 | self.CREATE_MONITOR_TABLE) |
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| 82 | self.con.commit() |
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| 83 | |
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| 84 | def _set_parameter(self, uuid, key, value): |
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| 85 | query = """UPDATE monitors |
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| 86 | SET %s=? |
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| 87 | WHERE uuid=?""" % (key) |
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| 88 | cur = self.con.cursor() |
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| 89 | cur.execute(query, (value, uuid)) |
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| 90 | self.con.commit() |
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| 91 | |
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| 92 | def set_anonymous(self, uuid, anonymous=True): |
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| 93 | return self._set_parameter(uuid, 'anonymous', anonymous) |
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| 94 | |
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| 95 | def add_monitor(self, host_info): |
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| 96 | query = """INSERT INTO monitors |
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| 97 | (uuid, |
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| 98 | hostname, |
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| 99 | ip, |
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| 100 | workers, |
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| 101 | sage_version, |
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| 102 | os, |
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| 103 | kernel_version, |
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| 104 | cpus, |
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| 105 | cpu_speed, |
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| 106 | cpu_model, |
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| 107 | mem_total, |
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| 108 | mem_free) |
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| 109 | VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?) |
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| 110 | """ |
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| 111 | |
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| 112 | uuid = host_info['uuid'] |
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| 113 | hostname = host_info['hostname'] |
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| 114 | ip = host_info['ip'] |
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| 115 | workers = host_info['workers'] |
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| 116 | sage_version = host_info['sage_version'] |
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| 117 | os = host_info['os'] |
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| 118 | kernel_version = host_info['kernel_version'] |
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| 119 | cpus = host_info['cpus'] |
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| 120 | cpu_speed = host_info['cpu_speed'] |
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| 121 | cpu_model = host_info['cpu_model'] |
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| 122 | mem_total = host_info['mem_total'] |
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| 123 | mem_free = host_info['mem_free'] |
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| 124 | |
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| 125 | cur = self.con.cursor() |
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| 126 | cur.execute(query, (uuid, hostname, ip, workers, sage_version, os, |
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| 127 | kernel_version, cpus, cpu_speed, cpu_model, |
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| 128 | mem_total, mem_free)) |
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| 129 | self.con.commit() |
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| 130 | |
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| 131 | def update_monitor(self, host_info): |
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| 132 | query = """UPDATE monitors |
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| 133 | SET hostname = ?, ip = ?, workers = ?, sage_version = ?, os = ?, |
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| 134 | kernel_version = ?, cpus = ?, cpu_speed = ?, cpu_model = ?, mem_total |
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| 135 | = ?, mem_free = ? |
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| 136 | WHERE uuid = ? |
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| 137 | """ |
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| 138 | |
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| 139 | uuid = host_info['uuid'] |
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| 140 | hostname = host_info['hostname'] |
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| 141 | ip = host_info['ip'] |
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| 142 | workers = host_info['workers'] |
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| 143 | sage_version = host_info['sage_version'] |
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| 144 | os = host_info['os'] |
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| 145 | kernel_version = host_info['kernel_version'] |
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| 146 | cpus = host_info['cpus'] |
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| 147 | cpu_speed = host_info['cpu_speed'] |
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| 148 | cpu_model = host_info['cpu_model'] |
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| 149 | mem_total = host_info['mem_total'] |
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| 150 | mem_free = host_info['mem_free'] |
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| 151 | |
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| 152 | cur = self.con.cursor() |
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| 153 | cur.execute(query, (hostname, ip, workers, sage_version, os, |
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| 154 | kernel_version, cpus, cpu_speed, cpu_model, |
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| 155 | mem_total, mem_free, uuid)) |
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| 156 | |
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| 157 | def get_monitor(self, uuid): |
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| 158 | query = """SELECT |
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| 159 | uuid, |
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| 160 | workers, |
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| 161 | hostname, |
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| 162 | ip, |
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| 163 | anonymous, |
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| 164 | sage_version, |
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| 165 | os |
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| 166 | FROM monitors |
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| 167 | WHERE uuid = ?""" |
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| 168 | |
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| 169 | cur = self.con.cursor() |
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| 170 | cur.execute(query, (uuid,)) |
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| 171 | result = cur.fetchone() |
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| 172 | if result is None: |
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| 173 | return result |
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| 174 | columns = [desc[0] for desc in cur.description] |
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| 175 | monitor = dict(zip(columns, result)) |
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| 176 | for k, v in monitor.iteritems(): |
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| 177 | if k == 'anonymous': |
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| 178 | monitor[k] = bool(v) |
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| 179 | |
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| 180 | return monitor |
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| 181 | |
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| 182 | def get_monitor_list(self): |
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| 183 | """ |
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| 184 | Returns a list of connected monitors. |
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| 185 | |
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| 186 | """ |
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| 187 | |
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| 188 | query = """SELECT uuid, hostname, ip, anonymous, sage_version, os |
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| 189 | FROM monitors |
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| 190 | WHERE connected""" |
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| 191 | cur = self.con.cursor() |
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| 192 | cur.execute(query) |
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| 193 | result = cur.fetchall() |
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| 194 | columns = [desc[0] for desc in cur.description] |
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| 195 | monitors = [dict(zip(columns, monitor)) for monitor in result] |
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| 196 | for monitor in monitors: |
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| 197 | for k, v in monitor.iteritems(): |
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| 198 | if k == 'anonymous': |
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| 199 | monitor[k] = bool(v) |
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| 200 | |
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| 201 | return monitors |
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| 202 | |
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| 203 | def set_connected(self, uuid, connected=True): |
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| 204 | """ |
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| 205 | Sets the connected status of a monitor. |
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| 206 | |
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| 207 | Parameters: |
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| 208 | uuid -- string |
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| 209 | connected -- bool |
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| 210 | |
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| 211 | """ |
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| 212 | |
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| 213 | cur = self.con.cursor() |
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| 214 | if connected: |
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| 215 | query = """UPDATE monitors SET connected=1, last_connection=? |
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| 216 | WHERE uuid=?""" |
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| 217 | cur.execute(query, (datetime.datetime.now(), uuid)) |
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| 218 | else: |
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| 219 | query = """UPDATE monitors SET connected=0 WHERE uuid=?""" |
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| 220 | cur.execute(query, (uuid,)) |
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| 221 | |
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| 222 | self.con.commit() |
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| 223 | |
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| 224 | def is_connected(self, uuid): |
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| 225 | """ |
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| 226 | Returns whether the monitor is connected. |
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| 227 | |
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| 228 | """ |
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| 229 | |
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| 230 | query = """SELECT connected FROM monitors WHERE uuid = ?""" |
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| 231 | cur = self.con.cursor() |
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| 232 | cur.execute(query, (uuid,)) |
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| 233 | result = cur.fetchone()[0] |
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| 234 | |
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| 235 | return result |
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| 236 | |
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| 237 | def set_busy(self, uuid, busy): |
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| 238 | """ |
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| 239 | Sets whether or not a worker is doing a job. |
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| 240 | |
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| 241 | """ |
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| 242 | |
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| 243 | if busy: |
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| 244 | query = """UPDATE monitors SET busy=1 WHERE uuid=?""" |
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| 245 | else: |
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| 246 | query = """UPDATE monitors SET busy=0 WHERE uuid=?""" |
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| 247 | |
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| 248 | cur = self.con.cursor() |
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| 249 | cur.execute(query, (uuid,)) |
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| 250 | self.con.commit() |
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| 251 | |
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| 252 | def get_worker_count(self, connected, busy=False): |
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| 253 | """ |
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| 254 | Returns the number of workers. |
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| 255 | |
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| 256 | Parameters: |
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| 257 | connected -- bool |
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| 258 | busy -- bool |
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| 259 | |
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| 260 | """ |
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| 261 | |
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| 262 | if connected and not busy: |
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| 263 | query = """SELECT workers FROM monitors WHERE connected AND NOT busy""" |
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| 264 | elif connected and busy: |
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| 265 | query = """SELECT workers FROM monitors WHERE connected AND busy""" |
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| 266 | elif not connected and not busy: |
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| 267 | query = """SELECT workers FROM monitors WHERE NOT connected AND NOT busy""" |
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| 268 | elif not connected and busy: |
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| 269 | query = """SELECT workers FROM monitors WHERE NOT connected AND busy""" |
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| 270 | cur = self.con.cursor() |
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| 271 | cur.execute(query) |
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| 272 | |
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| 273 | result = cur.fetchall() |
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| 274 | |
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| 275 | return sum(w[0] for w in result) |
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| 276 | |
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| 277 | def get_cpu_speed(self, connected=True, busy=False): |
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| 278 | """ |
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| 279 | Returns the aggregate cpu speed in Mhz. |
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| 280 | |
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| 281 | Parameters: |
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| 282 | connected -- bool |
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| 283 | |
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| 284 | """ |
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| 285 | |
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| 286 | if connected and busy: |
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| 287 | query = """SELECT cpu_speed, workers FROM monitors |
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| 288 | WHERE connected AND busy""" |
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| 289 | elif connected: |
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| 290 | query = """SELECT cpu_speed, workers FROM monitors |
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| 291 | WHERE connected""" |
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| 292 | else: |
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| 293 | query = """SELECT cpu_speed, workers FROM monitors""" |
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| 294 | |
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| 295 | cur = self.con.cursor() |
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| 296 | cur.execute(query) |
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| 297 | |
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| 298 | result = cur.fetchall() |
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| 299 | |
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| 300 | cpu_speed = sum([s[0]*s[1] for s in result]) |
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| 301 | |
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| 302 | return cpu_speed |
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| 303 | |
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| 304 | def get_cpu_count(self, connected=True): |
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| 305 | """ |
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| 306 | Returns the number of cpus that are available. |
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| 307 | |
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| 308 | Parameters: |
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| 309 | connected -- bool |
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| 310 | |
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| 311 | """ |
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| 312 | |
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| 313 | if connected: |
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| 314 | query = """SELECT workers, cpus FROM monitors WHERE connected""" |
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| 315 | else: |
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| 316 | query = """SELECT workers, cpus FROM monitors""" |
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| 317 | |
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| 318 | cur = self.con.cursor() |
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| 319 | cur.execute(query) |
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| 320 | |
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| 321 | result = cur.fetchall() |
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| 322 | |
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| 323 | cpu_count = sum(min(s[0:2]) for s in result) |
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| 324 | |
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| 325 | return cpu_count |
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