service_info.hpp (3301B)
1 // Copyright (c) 2020 Morel Bérenger 2 // 3 // This software is provided 'as-is', without any express or implied 4 // warranty. In no event will the authors be held liable for any damages 5 // arising from the use of this software. 6 // 7 // Permission is granted to anyone to use this software for any purpose, 8 // including commercial applications, and to alter it and redistribute it 9 // freely, subject to the following restrictions: 10 // 11 // 1. The origin of this software must not be misrepresented; you must not 12 // claim that you wrote the original software. If you use this software 13 // in a product, an acknowledgment in the product documentation would be 14 // appreciated but is not required. 15 // 2. Altered source versions must be plainly marked as such, and must not be 16 // misrepresented as being the original software. 17 // 3. This notice may not be removed or altered from any source distribution. 18 19 #ifndef SERVICE_INFO_HPP 20 #define SERVICE_INFO_HPP 21 22 #include <regex.h> 23 24 struct area_t 25 { 26 uint16_t x, y; 27 uint16_t w, h; 28 }; 29 30 enum status_t 31 { 32 DOWN, 33 WAKING, 34 UP, 35 }; 36 37 bool add_serv_info( void* var, char* arg ); 38 bool show_serv_info( void const* val, FILE* target ); 39 40 // registers info about a service: 41 // * pointer to the filepath of logs to analyse 42 // * directory inotify watcher 43 // * file inotify watcher if the file exists 44 // * open file descriptor if the file exists 45 // * time since last "starting" regex was met, without "stoping" regex 46 // * offset from filepath at which directory name ends 47 struct service_info_t 48 { 49 // passed argument is kept as is, and occurrences of ':' are 50 // used as end-of-string. The .*_sz vars are relative to 51 // previous index, 0 for filename_sz. 52 char * path = nullptr; //path to watch with inotify 53 int dir_wfd = -1; //inotify fd for parent dir 54 int file_wfd = -1; //file to read data from 55 int file_fd = -1; //file to read data from 56 uint16_t filename = UINT16_MAX;//path offset, regex showing start of svc 57 uint16_t svstart = UINT16_MAX;//path offset, regex showing start of svc 58 uint16_t svstop = UINT16_MAX;//path offset, regex showind death of svc 59 //TODO: use for service identification 60 //uint16_t svcname = UINT16_MAX;//path offset, regex showing start of svc 61 uint16_t live_delay = 0; //seconds needed to be alive since birth 62 uint16_t birth_time = UINT16_MAX;//seconds since birth, MAX when not alive 63 64 area_t draw_area; 65 }; 66 67 bool file_watch( service_info_t& svc, pollfd& pfd ); 68 69 size_t name_sz( service_info_t const& svc ); 70 char const* name( service_info_t const& svc ); 71 status_t status( service_info_t const& svc ); 72 73 bool print_status( service_info_t const& svc ); 74 bool refresh( service_info_t & svc, time_t time ); 75 bool update( service_info_t & svc ); 76 77 // stores the "master" inotify. Inotify is used to avoid 78 // active probing files and still be able to handle log 79 // rotations. 80 extern int g_inotify_watch_fd; 81 82 // stores the screen's dimensions, and the place in which 83 // to start drawing (might be handy later). 84 // Initialised at startup 85 // TODO: keep it up to date with ioctl and SIGWINCH 86 extern area_t g_screen_area; 87 88 extern char const* g_color_down; 89 extern char const* g_color_up; 90 extern char const* g_color_wake; 91 92 char const* move_to( service_info_t const& svc ); 93 94 #endif