handlers.py
author Tero Marttila <terom@fixme.fi>
Tue, 10 Feb 2009 02:57:16 +0200
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child 80 a0662cff1d9d
permissions -rw-r--r--
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"""
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    Our URL action handlers
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"""
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import datetime, calendar, pytz
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from qmsk.web import http, template
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import urls, channels, helpers
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import preferences as prefs
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from preferences import preferences
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import config
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# load templates from here
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templates = template.TemplateLoader("templates",
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    _helper_class   = helpers.Helpers,
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    urls            = urls,
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    channel_list    = config.LOG_CHANNELS,
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    config          = config,
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)
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# our LogSearch thing
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# XXX: move elsewhere
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import log_search
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search_index = log_search.LogSearchIndex("logs/index", 'r')
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def index (request) :
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    """
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        The topmost index page, display a list of available channels, perhaps some general stats
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    """
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    return templates.render_to_response("index",
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        req             = request,
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    )
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# XXX: fix this namespace crap
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@preferences.handler()
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def preferences_ (request) :
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    """
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        Preferences editor
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    """
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    # POST?
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    if request.is_post() :
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        # update any modified preferences
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        for pref in preferences.pref_list :
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            # get+parse new POST'd value
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            # XXX: this doesn't postprocess
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            new_value = pref.parse(request.get_post(pref.name))
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            # update if changed
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            if new_value != request.prefs[pref] :
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                request.prefs.set(pref.name, new_value)
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    # render
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    return templates.render_to_response("preferences",
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        req             = request,
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        prefs           = request.prefs,
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        preferences     = prefs,
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        timezones       = pytz.common_timezones,
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    )
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def channel_select (request, channel) :
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    """
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        Redirect to the appropriate channel_view
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    """
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    return http.Redirect(urls.channel.build(request, channel=channel))
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@preferences.handler(prefs.formatter)
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def channel_last (request, channel, count, formatter, type=None) :
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    """
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        The main channel view page, displaying the most recent lines
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    """
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    # get latest events
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    lines = channel.source.get_latest(count)
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    # we can render in various modes...
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    if not type :
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        # normal HTML
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        lines = formatter.format_html(lines)
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        return templates.render_to_response("channel_last",
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            req             = request,
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            prefs           = request.prefs,
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            channel         = channel,
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            count           = count,
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            lines           = lines,
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        )
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    elif type == 'txt' :
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        # plaintext
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        lines = formatter.format_txt(lines)
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        # build data
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        data = '\n'.join(data for line, data in lines)
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        return http.Response(data, 'text/plain')
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    elif type == 'png' :
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        # PNG image
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        png_data = formatter.format_png(lines)
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        return http.Response(png_data, 'image/png', charset=None)
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    else :
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        raise http.ResponseError("Unrecognized type: %r" % (type, ))
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@preferences.handler(prefs.formatter, prefs.timezone, prefs.count)
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def channel_link (request, channel, timestamp, formatter, timezone, count) :
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    """
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        Display channel_date for specific UTC timestamp
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    """
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    # convert timestamp to user's timezone
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    timestamp = timestamp.astimezone(timezone)
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    # get correct day's correct page of lines
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    page, max, lines = channel.source.get_date_paged(timestamp, count)
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    # lines
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    lines = formatter.format_html(lines)
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    # render
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    return templates.render_to_response("channel_date",
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        req             = request,
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        prefs           = request.prefs,
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        channel         = channel,
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        date            = timestamp,
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        page            = page,
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        count           = count,
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        max             = max,
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        lines           = lines,
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    )
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@preferences.handler(prefs.timezone)
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def channel_calendar (request, channel, year, month, timezone) :
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    """
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        Display a list of avilable logs for some month
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    """
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    # current date as default
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    now = timezone.localize(datetime.datetime.now())
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    # target year/month
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    target = timezone.localize(datetime.datetime(
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        year    = year if year else now.year,
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        month   = month if month else now.month,
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        day     = 1
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    ))
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    # get set of days available
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    days = channel.source.get_month_days(target)
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    # display calendar
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    return templates.render_to_response("channel_calendar",
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        req             = request,
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        prefs           = request.prefs,
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        channel         = channel,
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        calendar        = calendar.Calendar(),
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        month           = target.date(),
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        days            = days,
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    )
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@preferences.handler(prefs.formatter, prefs.timezone, prefs.count)
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def channel_date (request, channel, date, formatter, timezone, count, page=1) :
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    """
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        Display all log data for the given date
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    """
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    # fix date timezone
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    date = date.replace(tzinfo=timezone)
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    # get that day's events, either paged or not
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    if page :
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        page, max, lines = channel.source.get_date_paged(date, count, page)
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    else :
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        lines = channel.source.get_date(date)
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        max = None
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    # lines
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    lines = formatter.format_html(lines)
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    # render
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    return templates.render_to_response("channel_date",
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        req             = request,
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        prefs           = request.prefs,
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        channel         = channel,
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        date            = date,
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        page            = page,
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        count           = count,
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        max             = max,
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        lines           = lines,
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    )
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@preferences.handler(prefs.formatter, prefs.count)
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def channel_search (request, channel, formatter, count, q=None, page=1, max=1) :
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    """
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        Display the search form for the channel for GET, or do the search for POST.
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    """
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    # calculate skip offset from page/count
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    skip = (page - 1) * count
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    # got a search query?
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    if q :
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        try :
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            # do search
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            lines = search_index.search_simple(channel, q, count, skip)
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            # update max?
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            if max and page > max :
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                max = page
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        except log_search.NoResultsFound :
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            # no lines
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            lines = None
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        else :
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            # format
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            lines = formatter.format_html(lines, full_timestamps=True)
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    else :
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        lines = None
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    # render
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    return templates.render_to_response("channel_search",
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        req             = request,
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        prefs           = request.prefs,
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        channel         = channel,
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        search_query    = q,
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        count           = count,
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        page            = page,
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        skip            = skip,
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        max             = max,
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        lines           = lines,
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    )
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