lucacuzzocrea/Server_Monitor
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Server_Monitor/code/main.cpp

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#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "platform.h"
#include "render/render.h"
#include "enginestate.h"
#include "lib/types.h"
#include "lib/math.h"
#include "gui/gui.h"
#include "debug/logger.h"
#include "debug/log_viewer.h"
#include "gui/layout.h"
#include "stb_image.h"
#include <time.h>
#include <sys/utsname.h>
#include <sys/sysinfo.h>
#include <NetworkManager.h>
#include <libvirt/libvirt.h>
#include <mntent.h>
#include <sys/statvfs.h>
#include <sys/stat.h>
bool process_input(); // Returns true when the program needs to exit
void process_gui();
void app_init();
void app_deinit();
enum Section_Status
{
SECTION_STATUS_NONE,
SECTION_STATUS_OK,
SECTION_STATUS_WARNING,
SECTION_STATUS_ERROR
};
struct App_Data
{
f64 glib_iteration_t = -1;
f64 system_sample_t = -1;
f64 network_sample_t = -1;
f64 virt_sample_t = -1;
f64 fs_sample_t = -1;
f64 glib_iteration_delta = 0.1;
f64 system_sample_delta = 0.2;
f64 network_sample_delta = 0.2;
f64 virt_sample_delta = 0.5;
f64 fs_sample_delta = 1.0;
bool show_grid = false;
};
struct System_Info
{
char hostname[128];
char kernel[128];
time_t time;
char cached_date_string[128];
char cached_time_string[128];
s32 cpus_total;
s32 cpus_active;
f32 load[3];
s64 uptime;
u64 ram_total;
u64 ram_used;
u64 ram_available;
Section_Status status;
};
struct Network_Device
{
char name[128];
NMDeviceType type;
NMDeviceState state;
};
struct Network_Info
{
s32 device_count;
Network_Device devices[32];
Section_Status status;
};
struct Virt_Domain
{
char name[128];
s32 state;
u32 vcpus;
f32 cpu_usage;
u64 prev_cpuTime;
u64 ram_total;
u64 ram_used;
u64 ram_available;
};
struct Virt_Info
{
s32 domain_count;
Virt_Domain domains[32];
Section_Status status;
};
struct FS_Entry
{
char device[256];
char directory[256];
char type[128];
u64 bytes_total;
u64 bytes_available;
};
struct FS_Info
{
s32 fs_count;
FS_Entry fs[32];
Section_Status status;
};
System_Info system_info;
Network_Info network_info;
Virt_Info virt_info;
FS_Info fs_info;
App_Data app_data;
Gui_Style style_default;
void style_select(Gui_Context *ctx, Section_Status status)
{
switch(status)
{
case SECTION_STATUS_NONE: {
ctx->style.button_color = style_default.button_color;
ctx->style.button_color_hovered = style_default.button_color_hovered;
ctx->style.window_background_color = style_default.window_background_color;
ctx->style.window_background_color_inactive = style_default.window_background_color_inactive;
ctx->style.window_border_color = style_default.window_border_color;
ctx->style.window_border_color_inactive = style_default.window_border_color_inactive;
} break;
case SECTION_STATUS_OK: {
ctx->style.button_color_hovered = ctx->style.button_color = v4{0,1,0,1};
ctx->style.window_background_color_inactive = ctx->style.window_background_color = v4{0,.6,0,1};
ctx->style.window_border_color_inactive = ctx->style.window_border_color = v4{0,1,0,1};
} break;
case SECTION_STATUS_WARNING: {
ctx->style.button_color_hovered = ctx->style.button_color = v4{1,.8,0,1};
ctx->style.window_background_color_inactive = ctx->style.window_background_color = v4{.6,.5,0,1};
ctx->style.window_border_color_inactive = ctx->style.window_border_color = v4{1,.8,0,1};
} break;
case SECTION_STATUS_ERROR: {
ctx->style.button_color_hovered = ctx->style.button_color = v4{1,0,0,1};
ctx->style.window_background_color_inactive = ctx->style.window_background_color = v4{0.6,0,0,1};
ctx->style.window_border_color_inactive = ctx->style.window_border_color = v4{1,0,0,1};
} break;
}
}
// Icons
r_texture icon_disk;
r_texture icon_lan;
r_texture icon_ram;
r_texture icon_vpn;
r_texture icon_wifi;
r_texture icon_cpu;
u32 seconds_to_duration_text(char *text, f64 seconds, bool show_millis = false)
{
u32 written = 0;
u32 days = seconds / (24 * 3600);
seconds -= days * (24 * 3600);
u32 hours = seconds / 3600;
seconds -= hours * 3600;
u32 minutes = seconds / 60;
seconds -= minutes * 60;
if(days)
written += sprintf(text + written, "%s%dd", (written ? " " : ""), days);
if(days || hours)
written += sprintf(text + written, "%s%dh", (written ? " " : ""), hours);
if(days || hours || minutes)
written += sprintf(text + written, "%s%dm", (written ? " " : ""), minutes);
if(days || hours || minutes || seconds)
{
if(show_millis)
written += sprintf(text + written, "%s%.3lfs", (written ? " " : ""), seconds);
else
written += sprintf(text + written, "%s%.0lfs", (written ? " " : ""), seconds);
}
return written;
}
r_texture load_image_monochrome(const char *filename)
{
s32 width, height, channels;
stbi_set_flip_vertically_on_load(false);
u8 *data = stbi_load(filename, &width, &height, &channels, 1);
for(u64 i = 0; i < (width*height); i++) // Flipped colors
data[i] = 0xFF - data[i];
return r_texture_create(data, {width, height}, R_TEXTURE_ALPHA);
}
int main(int argc, char *argv[])
{
bool status;
LOG_INIT();
p_init(true);
LogViewer log_viewer = LogViewer::Init(&global_logger);
p_window_open();
p_window_name((char*)"Server Monitor");
r_init();
gui_init();
log_viewer.Print_New_Messages_On_Console();
app_init();
f64 start = p_time();
f64 prev_t = 0;
f32 max_render_time = 1.0 / 30.0;
f64 processing_start = 0;
while(1)
{
// Engine
engine.time = p_time() - start;
engine.delta_t = engine.time - prev_t;
//LOG(LOG_INFO, "Frame time: %.3lf ms FPS: %.2lf", 1000*delta_t, 1/delta_t);
r_time_update(engine.time);
// @Hack: @Performance: Reduced framerate to use less resources. Text rendering is highly inefficient right now. Maybe it will improve later and this will not be necessary anymore.
f64 processing_time = engine.time - processing_start;
if(processing_time < max_render_time)
p_wait(maximum(0, (max_render_time - 1.02*processing_time) * 1000));
processing_start = p_time() - start;
// Input
bool exit = process_input();
if(exit)
break;
// GUI
r_framebuffer_select(&r_render_state.framebuffer_SCREEN);
r_clear({0,0,0,0});
process_gui();
log_viewer.Print_New_Messages_On_Console();
r_swap();
prev_t = engine.time;
}
app_deinit();
gui_deinit();
p_window_close();
LOG_DEINIT();
p_deinit();
return 0;
}
bool process_input()
{
// Events
Event event;
while(p_next_event(&event))
{
gui_handle_event(&event);
switch(event.type)
{
case EVENT_QUIT: {
return true;
};
case EVENT_MOUSE_MOVE:
{
} break;
case EVENT_KEY:
{
switch(event.key.key_code)
{
case KEY_G:
case KEY_F2: {
if(event.key.pressed)
app_data.show_grid = !app_data.show_grid;
} break;
default: {
// Other keys. Put default to suppress warnings
} break;
}
} break;
case EVENT_RESIZE:
{
//LOG(LOG_DEBUG, "New size: %u %u", signal.resize.width, signal.resize.height);
s32 width = event.resize.width;
s32 height = event.resize.height;
r_size_update(width, height);
global_gui_state.default_context.width = width;
global_gui_state.default_context.height = height;
engine.gui_scaling = minimum(width, height) * 0.03;
global_gui_state.default_context.style.font_size = engine.gui_scaling;
global_gui_state.default_context.style.button_radius = engine.gui_scaling / 10;
} break;
case EVENT_FOCUS:
{
} break;
case EVENT_UNFOCUS:
{
} break;
}
}
return false;
}
void system_info_gui(Gui_Layout_Grid *grid)
{
Gui_Context *ctx = &global_gui_state.default_context;
// No window info
// Clock and date
system_info.time = time(NULL);
struct tm *time_info = localtime(&system_info.time);
char clock[64], timezone[64];
strftime(clock, 128, "%H:%M:%S", time_info);
strftime(timezone, 128, "%Z", time_info);
f32 old_font_size = ctx->style.font_size;
ctx->style.font_size *= 3;
gui_text_aligned(grid->rect_at({2,1}, {2,2}), clock, GUI_ALIGN_CENTER);
ctx->style.font_size = old_font_size;
gui_text_aligned(grid->rect_at({2,3}, {2,1}), timezone, GUI_ALIGN_CENTER);
gui_text_aligned(grid->rect_at({2,0}, {2,1}), system_info.cached_date_string, GUI_ALIGN_CENTER);
// Host
gui_text_aligned(grid->rect_at({0,0}, {2,1}), system_info.hostname, GUI_ALIGN_LEFT);
// Uptime
char uptime[128] = "Uptime: "; seconds_to_duration_text(uptime + strlen("Uptime: "), system_info.uptime);
gui_text_aligned(grid->rect_at({4,0}, {2,1}), uptime, GUI_ALIGN_RIGHT);
Rect r;
Gui_Layout_Grid layout;
// Window reserved for future system info
r = grid->rect_at({0,1}, {2,3});
layout = gui_layout_grid_create_by_divisions(v2{0,0}, r.size, 2, 3, 0.2*engine.gui_scaling);
style_select(ctx, system_info.status);
gui_window_start(r, 0xabc23401);
style_select(ctx, SECTION_STATUS_NONE);
gui_window_end();
// Window with cpu n., load, ram
r = grid->rect_at({4,1}, {2,3});
layout = gui_layout_grid_create_by_divisions(v2{0,0}, r.size, 4, 3, 0.2*engine.gui_scaling);
style_select(ctx, system_info.status);
gui_window_start(r, 0xabcdef01);
style_select(ctx, SECTION_STATUS_NONE);
char load[128]; snprintf(load, 128, "Load: %.2f %.2f %.2f", system_info.load[0], system_info.load[1], system_info.load[2]);
char processors[128]; snprintf(processors, 128, "CPUs: %d/%d", system_info.cpus_active, system_info.cpus_total);
// slider for ram?
char ram[128]; snprintf(ram, 128, "%.2f/%.2f GiB", system_info.ram_used / (1024.0*1024.0*1024.0), system_info.ram_total / (1024.0*1024.0*1024.0));
f32 ram_value = system_info.ram_used;
gui_text_aligned(layout.cell(layout.max_cells_count.x), processors, GUI_ALIGN_LEFT);
v2 ram_text_size = gui_text_compute_size("RAM: ");
Rect ram_rect = layout.cell(layout.max_cells_count.x);
ram_rect.position.x += ram_text_size.x;
ram_rect.size.x -= ram_text_size.x;
gui_text_aligned(layout.rect(), "RAM: ", GUI_ALIGN_LEFT);
gui_slider_text(ram_rect, 0, system_info.ram_total, &ram_value, ram);
gui_text_aligned(layout.cell(layout.max_cells_count.x), load, GUI_ALIGN_LEFT);
gui_window_end();
}
void network_gui(Gui_Layout_Grid *grid)
{
Gui_Context *ctx = &global_gui_state.default_context;
Rect r = grid->rect_at({0,5}, {2,grid->max_cells_count.y - 5});
Gui_Layout_Grid layout = gui_layout_grid_create_by_divisions(v2{0,0}, r.size, 2, grid->max_cells_count.y - 5, 0.2*engine.gui_scaling);
style_select(ctx, network_info.status);
gui_window_start(r, 0xabcdef02);
style_select(ctx, SECTION_STATUS_NONE);
gui_text_aligned(layout.cell(GUI_LAYOUT_MAX_CELLS), "Network", GUI_ALIGN_CENTER);
layout.row();
r = layout.rect_at({0,1}, layout.max_cells_count - v2s{0,1});
layout = gui_layout_grid_create_by_divisions(r.position, r.size, layout.max_cells_count.x, layout.max_cells_count.y/3, 0.2*engine.gui_scaling);
for(s32 i = 0; i < network_info.device_count; i++)
{
Network_Device *device = &network_info.devices[i];
if(device->type != NM_DEVICE_TYPE_ETHERNET && device->type != NM_DEVICE_TYPE_WIFI && device->type != NM_DEVICE_TYPE_WIREGUARD)
continue;
{
Section_Status status = SECTION_STATUS_OK;
if(device->state == NM_DEVICE_STATE_PREPARE ||
device->state == NM_DEVICE_STATE_CONFIG ||
device->state == NM_DEVICE_STATE_IP_CONFIG ||
device->state == NM_DEVICE_STATE_IP_CHECK)
{
// Bump status
if(status < SECTION_STATUS_WARNING)
status = SECTION_STATUS_WARNING;
}
else if(device->state != NM_DEVICE_STATE_ACTIVATED)
{
// Bump status
if(status < SECTION_STATUS_ERROR)
status = SECTION_STATUS_ERROR;
}
Rect r = layout.cell();
style_select(ctx, status);
gui_panel(r);
style_select(ctx, SECTION_STATUS_NONE);
Gui_Layout_Grid layout = gui_layout_grid_create_by_divisions(r.position, r.size, 9, 4, 0.1*engine.gui_scaling);
const char *type_text = "";
r_texture *icon = &icon_lan;
switch(device->type)
{
case NM_DEVICE_TYPE_ETHERNET: {
icon = &icon_lan;
type_text = "Ethernet";
} break;
case NM_DEVICE_TYPE_WIFI: {
icon = &icon_wifi;
type_text = "WiFi";
} break;
case NM_DEVICE_TYPE_TUN: {
icon = &icon_vpn;
type_text = "TAP/TUN";
} break;
case NM_DEVICE_TYPE_BRIDGE: {
icon = &icon_lan;
type_text = "Bridge";
} break;
case NM_DEVICE_TYPE_VLAN: {
icon = &icon_lan;
type_text = "vlan";
} break;
case NM_DEVICE_TYPE_WIREGUARD: {
icon = &icon_vpn;
type_text = "VPN";
} break;
default: {
icon = &icon_lan;
type_text = "";
} break;
}
const char *state_text = "";
switch(device->state)
{
case NM_DEVICE_STATE_UNKNOWN: state_text = "UNKNOWN"; break;
case NM_DEVICE_STATE_UNMANAGED: state_text = "UNMANAGED"; break;
case NM_DEVICE_STATE_UNAVAILABLE: state_text = "UNAVAILABLE"; break;
case NM_DEVICE_STATE_DISCONNECTED: state_text = "DISCONNECTED"; break;
case NM_DEVICE_STATE_PREPARE: state_text = "PREPARE"; break;
case NM_DEVICE_STATE_CONFIG: state_text = "CONFIG"; break;
case NM_DEVICE_STATE_NEED_AUTH: state_text = "NEED_AUTH"; break;
case NM_DEVICE_STATE_IP_CONFIG: state_text = "IP_CONFIG"; break;
case NM_DEVICE_STATE_IP_CHECK: state_text = "IP_CHECK"; break;
case NM_DEVICE_STATE_SECONDARIES: state_text = "SECONDARIES"; break;
case NM_DEVICE_STATE_ACTIVATED: state_text = "ACTIVATED"; break;
case NM_DEVICE_STATE_DEACTIVATING: state_text = "DEACTIVATING"; break;
case NM_DEVICE_STATE_FAILED: state_text = "FAILED"; break;
default: gui_button(layout.cell(), ""); break;
}
Rect icon_r = layout.cell(1);
icon_r.position += (icon_r.size - v2{1,1}*minimum(icon_r.size.x, icon_r.size.y)) * .5;
icon_r.size = v2{1,1} * minimum(icon_r.size.x, icon_r.size.y);
gui_image(icon_r, icon);
gui_text(layout.cell(layout.max_cells_count.x - layout.cursor.x), device->name);
layout.cell(1);
gui_text(layout.cell(layout.max_cells_count.x - layout.cursor.x), type_text);
layout.row(2);
layout.cell(1);
gui_text(layout.cell(layout.max_cells_count.x - layout.cursor.x), state_text);
}
}
gui_window_end();
}
void vm_gui(Gui_Layout_Grid *grid)
{
Gui_Context *ctx = &global_gui_state.default_context;
Rect r = grid->rect_at({2,5}, {2,grid->max_cells_count.y - 5});
Gui_Layout_Grid layout = gui_layout_grid_create_by_divisions(v2{0,0}, r.size, 2, grid->max_cells_count.y - 5, 0.2*engine.gui_scaling);
style_select(ctx, virt_info.status);
gui_window_start(r, 0xabcdef03);
style_select(ctx, SECTION_STATUS_NONE);
gui_text_aligned(layout.cell(GUI_LAYOUT_MAX_CELLS), "Virtual machines", GUI_ALIGN_CENTER);
layout.row();
r = layout.rect_at({0,1}, layout.max_cells_count - v2s{0,1});
layout = gui_layout_grid_create_by_divisions(r.position, r.size, layout.max_cells_count.x, layout.max_cells_count.y/4, 0.2*engine.gui_scaling);
for(s32 i = 0; i < virt_info.domain_count; i++)
{
Virt_Domain *domain = &virt_info.domains[i];
// Status
Section_Status status = SECTION_STATUS_NONE;
switch(domain->state)
{
case VIR_DOMAIN_NOSTATE:
status = SECTION_STATUS_NONE;
break;
case VIR_DOMAIN_RUNNING:
status = SECTION_STATUS_OK;
break;
case VIR_DOMAIN_BLOCKED:
case VIR_DOMAIN_SHUTOFF:
case VIR_DOMAIN_CRASHED:
status = SECTION_STATUS_ERROR;
break;
case VIR_DOMAIN_SHUTDOWN:
status = SECTION_STATUS_ERROR;
break;
case VIR_DOMAIN_PAUSED:
case VIR_DOMAIN_PMSUSPENDED:
status = SECTION_STATUS_WARNING;
break;
default:
status = SECTION_STATUS_NONE;
}
Rect r = layout.cell();
style_select(ctx, status);
gui_panel(r);
style_select(ctx, SECTION_STATUS_NONE);
Gui_Layout_Grid layout = gui_layout_grid_create_by_divisions(r.position, r.size, 2, 4, 0.1*engine.gui_scaling);
gui_text(layout.cell(2), domain->name);
char ram[128]; snprintf(ram, 128, "%.2f GB", domain->ram_total / (1024.0*1024.0*1024.0));
gui_text(layout.cell(1), ram);
char cpu_count[128]; snprintf(cpu_count, 128, "%hd vCPU", domain->vcpus);
gui_text(layout.cell(1), cpu_count);
layout.row(2);
char cpu[128]; snprintf(cpu, 128, "CPU: %.2f%%", domain->cpu_usage * 100);
gui_text(layout.cell(2), cpu);
layout.row();
}
gui_window_end();
}
void fs_gui(Gui_Layout_Grid *grid)
{
Gui_Context *ctx = &global_gui_state.default_context;
Rect r = grid->rect_at({4,5}, {2,grid->max_cells_count.y - 5});
Gui_Layout_Grid layout = gui_layout_grid_create_by_divisions(v2{0,0}, r.size, 1, grid->max_cells_count.y - 5, 0.2*engine.gui_scaling);
style_select(ctx, fs_info.status);
gui_window_start(r, 0xabcdef04);
style_select(ctx, SECTION_STATUS_NONE);
gui_text_aligned(layout.cell(GUI_LAYOUT_MAX_CELLS), "Storage", GUI_ALIGN_CENTER);
layout.row();
r = layout.rect_at({0,1}, layout.max_cells_count - v2s{0,1});
layout = gui_layout_grid_create_by_divisions(r.position, r.size, layout.max_cells_count.x, layout.max_cells_count.y/3, 0.2*engine.gui_scaling);
for(s32 i = 0; i < fs_info.fs_count; i++)
{
Rect r = layout.cell();
gui_panel(r);
Gui_Layout_Grid layout = gui_layout_grid_create_by_divisions(r.position, r.size, 8, 4, 0.1*engine.gui_scaling);
Rect icon_r = layout.cell(1);
icon_r.position += (icon_r.size - v2{1,1}*minimum(icon_r.size.x, icon_r.size.y)) * .5;
icon_r.size = v2{1,1} * minimum(icon_r.size.x, icon_r.size.y);
gui_image(icon_r, &icon_disk);
gui_text(layout.cell(layout.max_cells_count.x - layout.cursor.x), fs_info.fs[i].directory);
layout.row(2);
char space[64]; snprintf(space, 64, "%.1f/%.1f GiB", (f32)(fs_info.fs[i].bytes_total - fs_info.fs[i].bytes_available) / (1024*1024*1024), (f32)fs_info.fs[i].bytes_total / (1024*1024*1024));
char percentage[64]; snprintf(percentage, 64, "%.1f%%", (f32)(fs_info.fs[i].bytes_total - fs_info.fs[i].bytes_available) / fs_info.fs[i].bytes_total * 100);
f32 space_value = fs_info.fs[i].bytes_total - fs_info.fs[i].bytes_available;
gui_slider_text(layout.cell(layout.max_cells_count.x), 0, fs_info.fs[i].bytes_total, &space_value, space);
gui_text_aligned(layout.cell(layout.max_cells_count.x), percentage, GUI_ALIGN_CENTER);
}
gui_window_end();
}
NMClient *nmclient;
virConnectPtr virt_connection;
void collect_static_data()
{
// Hostname
struct utsname host_info;
uname(&host_info);
system_info.hostname[0] = 0;
if(host_info.nodename[0])
strncpy(system_info.hostname, host_info.nodename, 128);
snprintf(system_info.kernel, 128, "%s %s", host_info.sysname, host_info.release);
}
void collect_new_data_if_needed()
{
if(engine.time - app_data.glib_iteration_t >= app_data.glib_iteration_delta)
{
g_main_context_iteration(NULL, false);
app_data.glib_iteration_t = engine.time;
}
if(engine.time - app_data.system_sample_t >= app_data.system_sample_delta)
{
// Clock
system_info.time = time(NULL);
struct tm *time_info = localtime(&system_info.time);
strftime(system_info.cached_date_string, 128, "%a %e %b %Y", time_info);
strftime(system_info.cached_time_string, 128, "%H:%M:%S %Z", time_info);
// CPU count
system_info.cpus_total = get_nprocs();
system_info.cpus_active = get_nprocs_conf();
// System info for later
struct sysinfo sys_info;
sysinfo(&sys_info);
// Uptime
system_info.uptime = sys_info.uptime;
// Load
system_info.load;
for(int i = 0; i < 3; i++)
system_info.load[i] = round((f32)sys_info.loads[i] / (1 << SI_LOAD_SHIFT) * 100) / 100;
// Memory
system_info.ram_total = sys_info.totalram * sys_info.mem_unit;
system_info.ram_available = (sys_info.freeram + sys_info.bufferram) * sys_info.mem_unit;
system_info.ram_used = sys_info.totalram * sys_info.mem_unit - system_info.ram_available;
// Status
system_info.status = SECTION_STATUS_NONE;
app_data.system_sample_t = engine.time;
}
if(engine.time - app_data.network_sample_t >= app_data.network_sample_delta)
{
const GPtrArray *devices = nm_client_get_devices(nmclient);
network_info.device_count = devices->len;
for(int i = 0; i < devices->len; i++)
{
NMDevice *device = (NMDevice*)devices->pdata[i];
strncpy(network_info.devices[i].name, nm_device_get_iface(device), 128);
network_info.devices[i].type = nm_device_get_device_type(device);
network_info.devices[i].state = nm_device_get_state(device);
}
// Update section status
network_info.status = SECTION_STATUS_OK;
for(int i = 0; i < network_info.device_count; i++)
{
Network_Device *device = &network_info.devices[i];
if(device->type == NM_DEVICE_TYPE_ETHERNET || device->type == NM_DEVICE_TYPE_WIREGUARD)
{
if(device->state == NM_DEVICE_STATE_PREPARE ||
device->state == NM_DEVICE_STATE_CONFIG ||
device->state == NM_DEVICE_STATE_IP_CONFIG ||
device->state == NM_DEVICE_STATE_IP_CHECK)
{
// Bump status
if(network_info.status < SECTION_STATUS_WARNING)
network_info.status = SECTION_STATUS_WARNING;
}
else if(device->state != NM_DEVICE_STATE_ACTIVATED)
{
// Bump status
if(network_info.status < SECTION_STATUS_ERROR)
network_info.status = SECTION_STATUS_ERROR;
}
}
}
app_data.network_sample_t = engine.time;
}
if(engine.time - app_data.virt_sample_t >= app_data.virt_sample_delta)
{
virDomainPtr *domains;
virt_info.domain_count = virConnectListAllDomains(virt_connection, &domains, 0);
for(int i = 0; i < virt_info.domain_count; i++)
{
Virt_Domain *dom = &virt_info.domains[i];
// Name
strncpy(dom->name, virDomainGetName(domains[i]), 128);
// State
virDomainInfo info;
int res = virDomainGetInfo(domains[i], &info);
dom->state = info.state;
// CPU
dom->vcpus = info.nrVirtCpu;
dom->cpu_usage = (info.cpuTime - dom->prev_cpuTime) / ((engine.time - app_data.virt_sample_t) * 1e9 * dom->vcpus);
dom->prev_cpuTime = info.cpuTime;
dom->ram_total = info.memory * 1024; // mem * 1000 or mem * 1024 ??
dom->ram_used = dom->ram_total;
dom->ram_available = 0;
}
p_free(domains);
// Update section status
virt_info.status = SECTION_STATUS_OK;
for(int i = 0; i < virt_info.domain_count; i++)
{
Virt_Domain *domain = &virt_info.domains[i];
if(domain->state == VIR_DOMAIN_PAUSED ||
domain->state == VIR_DOMAIN_PMSUSPENDED)
{
// Bump status
if(virt_info.status < SECTION_STATUS_WARNING)
virt_info.status = SECTION_STATUS_WARNING;
}
else if(domain->state != VIR_DOMAIN_RUNNING)
{
// Bump status
if(virt_info.status < SECTION_STATUS_ERROR)
virt_info.status = SECTION_STATUS_ERROR;
}
}
app_data.virt_sample_t = engine.time;
}
if(engine.time - app_data.fs_sample_t >= app_data.fs_sample_delta)
{
FILE *file = setmntent("/proc/mounts", "r");
fs_info.fs_count = 0;
for(struct mntent *ent = getmntent(file); ent != NULL; ent = getmntent(file))
{
strncpy(fs_info.fs[fs_info.fs_count].device, ent->mnt_fsname, 256);
strncpy(fs_info.fs[fs_info.fs_count].directory, ent->mnt_dir, 256);
strncpy(fs_info.fs[fs_info.fs_count].type, ent->mnt_type, 128);
fs_info.fs[fs_info.fs_count].bytes_total = 0;
fs_info.fs[fs_info.fs_count].bytes_available = 0;
struct stat s;
if(stat(ent->mnt_fsname, &s) != 0 || !S_ISBLK(s.st_mode))
continue;
struct statvfs svfs;
if(statvfs(ent->mnt_dir, &svfs) == 0)
{
fs_info.fs[fs_info.fs_count].bytes_total = svfs.f_frsize * svfs.f_blocks;
fs_info.fs[fs_info.fs_count].bytes_available = svfs.f_frsize * svfs.f_bavail;
}
fs_info.fs_count++;
}
endmntent(file);
fs_info.status = SECTION_STATUS_NONE;
}
}
void process_gui()
{
collect_new_data_if_needed();
gui_frame_begin(engine.time);
Gui_Layout_Grid layout = gui_layout_grid_create_by_divisions(v2{0,0}, v2{r_render_state.width,r_render_state.height} , 6, 22, 0.5*engine.gui_scaling);
system_info_gui(&layout);
network_gui(&layout);
vm_gui(&layout);
fs_gui(&layout);
gui_frame_end();
if(app_data.show_grid)
{
layout.cursor = {0,0};
while(layout.cursor.y < layout.max_cells_count.y)
{
r_2d_immediate_rectangle_outline(layout.cell(), {0,1,0,1});
char coords[32]; snprintf(coords, 32, "(%d, %d)", layout.cursor.x - 1, layout.cursor.y);
gui_text_aligned(layout.rect(), coords, GUI_ALIGN_CENTER); // abuse: used after gui_frame_end
}
}
}
void app_init()
{
app_data.system_sample_t = 0;
app_data.network_sample_t = 0;
app_data.virt_sample_t = 0;
app_data.glib_iteration_t = 0;
nmclient = nm_client_new(NULL, NULL);
virt_connection = virConnectOpenReadOnly("qemu:///system");
collect_static_data();
style_default = global_gui_state.default_context.style;
// Icons
icon_disk = load_image_monochrome("assets/icons/harddisk-symbolic.png");
icon_lan = load_image_monochrome("assets/icons/lan-symbolic.png");
icon_ram = load_image_monochrome("assets/icons/memory-symbolic.png");
icon_vpn = load_image_monochrome("assets/icons/network-vpn-symbolic.png");
icon_wifi = load_image_monochrome("assets/icons/network-wireless-symbolic.png");
icon_cpu = load_image_monochrome("assets/icons/processor-symbolic.png");
}
void app_deinit()
{
virConnectClose(virt_connection);
}
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