/mysql_watcher/log_watcher

#!/usr/bin/env python
#
# $LicenseInfo:firstyear=2010&license=mit$
# 
# Copyright (c) 2010, Linden Research, Inc.
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
# $/LicenseInfo$
#

"""
Summarizes data collected by mysql_logger
"""

try:
    import psyco
    psyco.full()
except:
    pass

import curses
import curses.wrapper
import getopt
import os
import re
import socket
import sys
import time
import traceback

from llbase import llsd
from dblibs.dbutil import LLQueryStream, LLQueryStatMap, LLBinnedQueryStats, LLLogQueryStream, LLLogIter
from dblibs.dbbrowser import *

DISPLAY_INTERVAL = 5.0
DUMP_INTERVAL = 360.0


def watch_host(stdscr, host, query_metadata):
    "Watches query traffic for a particular host.  Returns the overall query counts when exited by breaking"

    #
    # Options/parameters
    #
    output_path = "./" + host
    # Generate a chronologically sorted list of all log files in the directory.
    MAX_LOGS=36
    log_files = []
    for i in range(0, MAX_LOGS):
        # Count down from the max and rename
        n = MAX_LOGS - i
        
        log_filename = output_path + "/query.log.%d.gz" % n
        if os.path.exists(log_filename):
            log_files.append(log_filename)
    
    log_filename = output_path + "/query.log"
    if os.path.exists(log_filename):
        log_files.append(log_filename)

    # Start listening to data stream
    query_stream = LLLogQueryStream(LLLogIter(log_files))

    # Curses configuration stuff
    size = stdscr.getmaxyx()
    stdscr.nodelay(True) # Non-blocking keyboard input

    sort_by = "total_time"

    count = 0
    cur_time = 0
    last_display_time = time.time()
    last_dump_time = time.time()
    last_count = 0
    total_stats = LLQueryStatMap("Total", time.time())
    binned_stats = LLBinnedQueryStats()
    display_stats = total_stats

    query_browser = LLQueryBrowser(stdscr, total_stats, query_metadata)


    done = False
    try:
        while not done:
            (event_type, query) = query_stream.getNextEvent()

            if event_type == "QueryStart":
                total_stats.queryStart(query)
                binned_stats.queryStart(query)
            elif (event_type == "QueryResponse"):
                total_stats.queryResponse(query)
                binned_stats.queryResponse(query)
                count += 1
            elif event_type == "Quit":
                # Quit is an "instantaneous" query, both start and response
                total_stats.queryStart(query)
                total_stats.queryResponse(query)
                binned_stats.queryStart(query)
                binned_stats.queryResponse(query)
                continue
            elif event_type == None:
                # no more data
                # Open the next file
                if len(log_files):
                    query_stream 
                time.sleep(0.01)

            # Spam
            if (0 == (count % 100)) or (None == event_type):
                # Check keyboard input
                c = 0
                done = False
                while -1 != c:
                    c = stdscr.getch()
                    if -1 == c:
                        pass
                    elif query_browser.handleKey(c):
                        query_browser.redraw()
                        pass
                    elif c == ord('q'):
                        # Quit
                        done = True
                        break
                    elif c == ord(' '):
                        # Switch which bins we're displaying
                        query_browser.setQueryMap(display_stats)
                        query_browser.redraw()
                    elif c == ord('d'):
                        # Dump output
                        total_stats.dumpTiming("%s/query_timing.txt" % output_path)
                        total_stats.dumpLLSD("%s/query_dump.llsd" % output_path)
                        binned_stats.dumpTiming(output_path)
                        binned_stats.dumpLLSD(output_path)
                    else:
                        print "Pressed key %s" % c

                cur_time = time.time()
                if (cur_time - last_display_time > DISPLAY_INTERVAL):
                    last_display_time = cur_time
                    last_count = count
                    query_browser.setQueryMap(display_stats)
                    query_browser.redraw()
                if (cur_time - last_dump_time > DUMP_INTERVAL):
                    last_dump_time = cur_time
                    total_stats.dumpTiming("%s/query_timing.txt" % output_path)
                    total_stats.dumpLLSD("%s/query_dump.llsd" % output_path)
                    binned_stats.dumpTiming(output_path)
                    binned_stats.dumpLLSD(output_path)
    except:
        traceback.print_exc()

    total_stats.dumpTiming("%s/query_timing.txt" % output_path)
    total_stats.dumpLLSD("%s/query_dump.llsd" % output_path)


if __name__ == "__main__":
    opts, args = getopt.getopt(sys.argv[1:], "", ["host="])

    host = None
    for o, a in opts:
        if o in ("--host"):
            host = a

    if not host:
        raise "No host specified"

    query_metadata = LLQueryMetadata("./query_info.llsd")

    #watch_host(None, host, query_metadata)
    curses.wrapper(watch_host, host, query_metadata)