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# -*- coding: utf-8 -*- |
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# |
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# This file is part of Glances. |
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# |
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# Copyright (C) 2019 Nicolargo <[email protected]> |
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# |
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# Glances is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU Lesser General Public License as published by |
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# the Free Software Foundation, either version 3 of the License, or |
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# (at your option) any later version. |
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# |
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# Glances is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU Lesser General Public License for more details. |
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# |
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# You should have received a copy of the GNU Lesser General Public License |
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# along with this program. If not, see <http://www.gnu.org/licenses/>. |
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"""Curses browser interface class .""" |
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import sys |
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import math |
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import curses |
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from glances.outputs.glances_curses import _GlancesCurses |
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from glances.logger import logger |
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from glances.timer import Timer |
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class GlancesCursesBrowser(_GlancesCurses): |
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"""Class for the Glances curse client browser.""" |
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def __init__(self, args=None): |
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"""Init the father class.""" |
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super(GlancesCursesBrowser, self).__init__(args=args) |
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_colors_list = { |
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'UNKNOWN': self.no_color, |
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'SNMP': self.default_color2, |
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'ONLINE': self.default_color2, |
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'OFFLINE': self.ifCRITICAL_color2, |
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'PROTECTED': self.ifWARNING_color2, |
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} |
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self.colors_list.update(_colors_list) |
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# First time scan tag |
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# Used to display a specific message when the browser is started |
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self.first_scan = True |
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# Init refresh time |
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self.__refresh_time = args.time |
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# Init the cursor position for the client browser |
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self.cursor_position = 0 |
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# Active Glances server number |
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self._active_server = None |
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self._current_page = 0 |
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self._page_max = 0 |
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self._page_max_lines = 0 |
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self.is_end = False |
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self._revesed_sorting = False |
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self._stats_list = None |
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@property |
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def active_server(self): |
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"""Return the active server or None if it's the browser list.""" |
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return self._active_server |
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@active_server.setter |
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def active_server(self, index): |
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"""Set the active server or None if no server selected.""" |
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self._active_server = index |
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@property |
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def cursor(self): |
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"""Get the cursor position.""" |
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return self.cursor_position |
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@cursor.setter |
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def cursor(self, position): |
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"""Set the cursor position.""" |
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self.cursor_position = position |
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def get_pagelines(self, stats): |
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if self._current_page == self._page_max - 1: |
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page_lines = len(stats) % self._page_max_lines |
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else: |
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page_lines = self._page_max_lines |
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return page_lines |
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def _get_status_count(self, stats): |
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counts = {} |
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for item in stats: |
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color = item['status'] |
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counts[color] = counts.get(color, 0) + 1 |
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result = '' |
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for key in counts.keys(): |
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result += key + ': ' + str(counts[key]) + ' ' |
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return result |
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def _get_stats(self, stats): |
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stats_list = None |
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if self._stats_list is not None: |
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stats_list = self._stats_list |
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stats_list.sort(reverse = self._revesed_sorting, |
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key = lambda x: { 'UNKNOWN' : 0, |
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'OFFLINE' : 1, |
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'PROTECTED' : 2, |
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'SNMP' : 3, |
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'ONLINE': 4 }.get(x['status'], 99)) |
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else: |
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stats_list = stats |
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return stats_list |
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def cursor_up(self, stats): |
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"""Set the cursor to position N-1 in the list.""" |
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if 0 <= self.cursor_position - 1: |
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self.cursor_position -= 1 |
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else: |
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if self._current_page - 1 < 0 : |
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self._current_page = self._page_max - 1 |
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self.cursor_position = (len(stats) - 1) % self._page_max_lines |
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else: |
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self._current_page -= 1 |
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self.cursor_position = self._page_max_lines - 1 |
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def cursor_down(self, stats): |
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"""Set the cursor to position N-1 in the list.""" |
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if self.cursor_position + 1 < self.get_pagelines(stats): |
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self.cursor_position += 1 |
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else: |
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if self._current_page + 1 < self._page_max: |
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self._current_page += 1 |
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else: |
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self._current_page = 0 |
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self.cursor_position = 0 |
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def cursor_pageup(self, stats): |
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"""Set prev page.""" |
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if self._current_page - 1 < 0: |
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self._current_page = self._page_max - 1 |
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else: |
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self._current_page -= 1 |
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self.cursor_position = 0 |
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def cursor_pagedown(self, stats): |
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"""Set next page.""" |
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if self._current_page + 1 < self._page_max: |
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self._current_page += 1 |
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else: |
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self._current_page = 0 |
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self.cursor_position = 0 |
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def __catch_key(self, stats): |
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# Catch the browser pressed key |
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self.pressedkey = self.get_key(self.term_window) |
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refresh = False |
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if self.pressedkey != -1: |
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logger.debug("Key pressed. Code=%s" % self.pressedkey) |
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# Actions... |
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if self.pressedkey == ord('\x1b') or self.pressedkey == ord('q'): |
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# 'ESC'|'q' > Quit |
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self.end() |
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logger.info("Stop Glances client browser") |
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# sys.exit(0) |
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self.is_end = True |
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elif self.pressedkey == 10: |
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# 'ENTER' > Run Glances on the selected server |
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self.active_server = self._current_page * self._page_max_lines + self.cursor_position |
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logger.debug("Server {}/{} selected".format(self.active_server, len(stats))) |
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elif self.pressedkey == curses.KEY_UP or self.pressedkey == 65: |
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# 'UP' > Up in the server list |
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self.cursor_up(stats) |
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logger.debug("Server {}/{} selected".format(self.cursor + 1, len(stats))) |
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elif self.pressedkey == curses.KEY_DOWN or self.pressedkey == 66: |
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# 'DOWN' > Down in the server list |
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self.cursor_down(stats) |
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logger.debug("Server {}/{} selected".format(self.cursor + 1, len(stats))) |
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elif self.pressedkey == curses.KEY_PPAGE: |
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# 'Page UP' > Prev page in the server list |
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self.cursor_pageup(stats) |
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logger.debug("PageUP: Server ({}/{}) pages.".format(self._current_page + 1, self._page_max)) |
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elif self.pressedkey == curses.KEY_NPAGE: |
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# 'Page Down' > Next page in the server list |
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self.cursor_pagedown(stats) |
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logger.debug("PageDown: Server {}/{} pages".format(self._current_page + 1, self._page_max)) |
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elif self.pressedkey == ord('1'): |
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self._stats_list = None |
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refresh = True |
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elif self.pressedkey == ord('2'): |
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self._revesed_sorting = False |
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self._stats_list = stats.copy() |
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refresh = True |
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elif self.pressedkey == ord('3'): |
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self._revesed_sorting = True |
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self._stats_list = stats.copy() |
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refresh = True |
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if refresh: |
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self._current_page = 0 |
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self.cursor_position = 0 |
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self.flush(stats) |
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# Return the key code |
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return self.pressedkey |
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def update(self, |
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stats, |
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duration=3, |
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cs_status=None, |
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return_to_browser=False): |
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"""Update the servers' list screen. |
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Wait for __refresh_time sec / catch key every 100 ms. |
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stats: Dict of dict with servers stats |
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""" |
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# Flush display |
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logger.debug('Servers list: {}'.format(stats)) |
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self.flush(stats) |
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# Wait |
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exitkey = False |
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countdown = Timer(self.__refresh_time) |
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while not countdown.finished() and not exitkey: |
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# Getkey |
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pressedkey = self.__catch_key(stats) |
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# Is it an exit or select server key ? |
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exitkey = ( |
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pressedkey == ord('\x1b') or pressedkey == ord('q') or pressedkey == 10) |
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if not exitkey and pressedkey > -1: |
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# Redraw display |
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self.flush(stats) |
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# Wait 100ms... |
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self.wait() |
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return self.active_server |
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def flush(self, stats): |
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"""Update the servers' list screen. |
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stats: List of dict with servers stats |
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""" |
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self.erase() |
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self.display(stats) |
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def display(self, stats, cs_status=None): |
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"""Display the servers list. |
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Return: |
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True if the stats have been displayed |
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False if the stats have not been displayed (no server available) |
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""" |
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# Init the internal line/column for Glances Curses |
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self.init_line_column() |
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# Get the current screen size |
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screen_x = self.screen.getmaxyx()[1] |
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screen_y = self.screen.getmaxyx()[0] |
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stats_max = screen_y - 3 |
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stats_len = len(stats) |
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self._page_max_lines = stats_max |
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self._page_max = int(math.ceil(stats_len / stats_max)) |
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# Init position |
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x = 0 |
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y = 0 |
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# Display top header |
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if stats_len == 0: |
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if self.first_scan and not self.args.disable_autodiscover: |
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msg = 'Glances is scanning your network. Please wait...' |
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self.first_scan = False |
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else: |
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msg = 'No Glances server available' |
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elif len(stats) == 1: |
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msg = 'One Glances server available' |
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else: |
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msg = '{} Glances servers available'.format(stats_len) |
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if self.args.disable_autodiscover: |
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msg += ' (auto discover is disabled)' |
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if screen_y > 1: |
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self.term_window.addnstr(y, x, |
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msg, |
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screen_x - x, |
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self.colors_list['TITLE']) |
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msg = '{}'.format(self._get_status_count(stats)) |
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self.term_window.addnstr(y + 1, x, |
|
299
|
|
|
msg, |
|
300
|
|
|
screen_x - x) |
|
301
|
|
|
|
|
302
|
|
|
if stats_len > stats_max and screen_y > 2: |
|
303
|
|
|
msg = '{} servers displayed.({}/{}) {}'.format(self.get_pagelines(stats), |
|
|
|
|
|
|
304
|
|
|
self._current_page + 1, |
|
|
|
|
|
|
305
|
|
|
self._page_max, |
|
|
|
|
|
|
306
|
|
|
self._get_status_count(stats)) |
|
|
|
|
|
|
307
|
|
|
self.term_window.addnstr(y + 1, x, |
|
308
|
|
|
msg, |
|
309
|
|
|
screen_x - x) |
|
310
|
|
|
|
|
|
|
|
|
|
311
|
|
|
if stats_len == 0: |
|
312
|
|
|
return False |
|
313
|
|
|
|
|
314
|
|
|
# Display the Glances server list |
|
315
|
|
|
# ================================ |
|
316
|
|
|
|
|
317
|
|
|
# Table of table |
|
318
|
|
|
# Item description: [stats_id, column name, column size] |
|
319
|
|
|
column_def = [ |
|
320
|
|
|
['name', 'Name', 16], |
|
321
|
|
|
['alias', None, None], |
|
322
|
|
|
['load_min5', 'LOAD', 6], |
|
323
|
|
|
['cpu_percent', 'CPU%', 5], |
|
324
|
|
|
['mem_percent', 'MEM%', 5], |
|
325
|
|
|
['status', 'STATUS', 9], |
|
326
|
|
|
['ip', 'IP', 15], |
|
327
|
|
|
# ['port', 'PORT', 5], |
|
328
|
|
|
['hr_name', 'OS', 16], |
|
329
|
|
|
] |
|
330
|
|
|
y = 2 |
|
|
|
|
|
|
331
|
|
|
|
|
332
|
|
|
# Display table header |
|
333
|
|
|
xc = x + 2 |
|
|
|
|
|
|
334
|
|
|
for cpt, c in enumerate(column_def): |
|
|
|
|
|
|
335
|
|
|
if xc < screen_x and y < screen_y and c[1] is not None: |
|
336
|
|
|
self.term_window.addnstr(y, xc, |
|
337
|
|
|
c[1], |
|
338
|
|
|
screen_x - x, |
|
339
|
|
|
self.colors_list['BOLD']) |
|
340
|
|
|
xc += c[2] + self.space_between_column |
|
|
|
|
|
|
341
|
|
|
y += 1 |
|
|
|
|
|
|
342
|
|
|
|
|
343
|
|
|
# If a servers has been deleted from the list... |
|
344
|
|
|
# ... and if the cursor is in the latest position |
|
345
|
|
|
if self.cursor > len(stats) - 1: |
|
346
|
|
|
# Set the cursor position to the latest item |
|
347
|
|
|
self.cursor = len(stats) - 1 |
|
348
|
|
|
|
|
349
|
|
|
stats_list = self._get_stats(stats) |
|
350
|
|
|
start_line = self._page_max_lines * self._current_page |
|
|
|
|
|
|
351
|
|
|
end_line = start_line + self.get_pagelines(stats_list) |
|
352
|
|
|
current_page = stats_list[start_line:end_line] |
|
353
|
|
|
|
|
|
|
|
|
|
354
|
|
|
# Display table |
|
355
|
|
|
line = 0 |
|
356
|
|
|
for v in current_page: |
|
|
|
|
|
|
357
|
|
|
# Limit the number of displayed server (see issue #1256) |
|
358
|
|
|
if line >= stats_max: |
|
359
|
|
|
continue |
|
360
|
|
|
# Get server stats |
|
361
|
|
|
server_stat = {} |
|
362
|
|
|
for c in column_def: |
|
|
|
|
|
|
363
|
|
|
try: |
|
364
|
|
|
server_stat[c[0]] = v[c[0]] |
|
365
|
|
|
except KeyError as e: |
|
|
|
|
|
|
366
|
|
|
logger.debug( |
|
367
|
|
|
"Cannot grab stats {} from server (KeyError: {})".format(c[0], e)) |
|
|
|
|
|
|
368
|
|
|
server_stat[c[0]] = '?' |
|
369
|
|
|
# Display alias instead of name |
|
370
|
|
|
try: |
|
371
|
|
|
if c[0] == 'alias' and v[c[0]] is not None: |
|
372
|
|
|
server_stat['name'] = v[c[0]] |
|
373
|
|
|
except KeyError: |
|
374
|
|
|
pass |
|
375
|
|
|
|
|
376
|
|
|
# Display line for server stats |
|
377
|
|
|
cpt = 0 |
|
378
|
|
|
xc = x |
|
|
|
|
|
|
379
|
|
|
|
|
380
|
|
|
# Is the line selected ? |
|
381
|
|
|
if line == self.cursor: |
|
382
|
|
|
# Display cursor |
|
383
|
|
|
self.term_window.addnstr( |
|
384
|
|
|
y, xc, ">", screen_x - xc, self.colors_list['BOLD']) |
|
385
|
|
|
|
|
386
|
|
|
# Display the line |
|
387
|
|
|
xc += 2 |
|
|
|
|
|
|
388
|
|
|
for c in column_def: |
|
|
|
|
|
|
389
|
|
|
if xc < screen_x and y < screen_y and c[1] is not None: |
|
390
|
|
|
# Display server stats |
|
391
|
|
|
self.term_window.addnstr( |
|
392
|
|
|
y, xc, format(server_stat[c[0]]), c[2], self.colors_list[v['status']]) |
|
|
|
|
|
|
393
|
|
|
xc += c[2] + self.space_between_column |
|
|
|
|
|
|
394
|
|
|
cpt += 1 |
|
395
|
|
|
# Next line, next server... |
|
396
|
|
|
y += 1 |
|
|
|
|
|
|
397
|
|
|
line += 1 |
|
398
|
|
|
|
|
399
|
|
|
return True |
|
400
|
|
|
|
nicolargo /
glances
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