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4020402e7b
PVE-mods/GPUcollecter.pm
Meliox 4020402e7b change gpu name
2026-01-04 15:25:06 +01:00

918 lines
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Perl
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package PVE::API2::GPUMonitor;
use strict;
use warnings;
use JSON;
use POSIX qw(WNOHANG);
use Fcntl qw(:flock);
use Time::HiRes qw(time);
use Fcntl qw(:flock O_CREAT O_EXCL O_WRONLY);
use File::Path qw(remove_tree);
# debug configuration - set to 0 to disable all _debug output
my $debug_ENABLED = 1;
my $VERSION = '1.0.0';
# debug function showing line number and call chain
# Usage: _debug(__LINE__, "message")
sub _debug {
return unless $debug_ENABLED;
my ($line, $message) = @_;
# Get function call chain
my @caller1 = caller(1); # who called _debug()
my @caller2 = caller(2); # parent of caller
my $sub1 = $caller1[3] || 'main';
my $sub2 = $caller2[3];
$sub1 =~ s/.*:://; # Remove package prefix
if (defined $sub2) {
$sub2 =~ s/.*:://;
warn "[$sub2 -> $sub1:$line] $message\n";
} else {
# No parent caller (called from top level)
warn "[$sub1:$line] $message\n";
}
}
my $pve_mod_working_dir = '/run/pveproxy/pve-mod';
my $stats_dir = $pve_mod_working_dir;
my $state_file = "$pve_mod_working_dir/stats.json";
my $lock_file = "$pve_mod_working_dir/pve-mod-worker.lock";
my $pve_mod_worker_lock = "$pve_mod_working_dir/pve-mod-pve_mod_worker.lock";
my $startup_lock = $lock_file . ".startup";
my $last_snapshot = {};
my $last_mtime = 0;
my $is_collector_parent = 0; # Flag to track if this process started collectors
my $last_get_graphic_stats_time = 0; # Track when get_graphic_stats was last called
my $COLLECTOR_TIMEOUT = 10; # Stop collectors x seconds after last get_graphic_stats call
my $intel_gpu_enabled = 1; # Set to 0 to disable Intel GPU support
my $amd_gpu_enabled = 0; # Set to 1 to enable AMD GPU support (not yet implemented)
my $nvidia_gpu_enabled = 0; # Set to 1 to enable NVIDIA GPU support (not yet implemented)
my $pve_mod_worker_pid;
my $pve_mod_worker_running = 0;
# ============================================================================
# Intel GPU Support
# ============================================================================
# Parse Intel GPU line output format
sub _parse_intel_gpu_line {
my ($line) = @_;
# Expected format (with aligned columns):
# Freq MHz IRQ RC6 Power W RCS BCS VCS VECS
# req act /s % gpu pkg % se wa % se wa % se wa % se wa
# 0 0 0 0 0.00 7.47 0.00 0 0 0.00 0 0 0.00 0 0 0.00 0 0
# Remove leading/trailing whitespace
$line =~ s/^\s+|\s+$//g;
# Split by whitespace and filter empty values
my @values = grep { $_ ne '' } split(/\s+/, $line);
# Expected: req(0) act(1) irq(2) rc6(3) gpu(4) pkg(5) rcs%(6) rcs_se(7) rcs_wa(8)
# bcs%(9) bcs_se(10) bcs_wa(11) vcs%(12) vcs_se(13) vcs_wa(14) vecs%(15) vecs_se(16) vecs_wa(17)
return unless @values >= 18;
my $stats = {
frequency => {
requested => $values[0] + 0.0,
actual => $values[1] + 0.0,
unit => "MHz"
},
interrupts => {
count => $values[2] + 0.0,
unit => "irq/s"
},
rc6 => {
value => $values[3] + 0.0,
unit => "%"
},
power => {
GPU => $values[4] + 0.0,
Package => $values[5] + 0.0,
unit => "W"
},
engines => {
"Render/3D" => {
busy => $values[6] + 0.0,
sema => $values[7] + 0.0,
wait => $values[8] + 0.0,
unit => "%"
},
Blitter => {
busy => $values[9] + 0.0,
sema => $values[10] + 0.0,
wait => $values[11] + 0.0,
unit => "%"
},
Video => {
busy => $values[12] + 0.0,
sema => $values[13] + 0.0,
wait => $values[14] + 0.0,
unit => "%"
},
VideoEnhance => {
busy => $values[15] + 0.0,
sema => $values[16] + 0.0,
wait => $values[17] + 0.0,
unit => "%"
}
},
clients => {}
};
return $stats;
}
# Get list of Intel GPU devices
sub _get_intel_gpu_devices {
my @devices = ();
return @devices unless -x '/usr/bin/intel_gpu_top';
if (open my $fh, '-|', 'intel_gpu_top -L') {
while (<$fh>) {
chomp;
# Parse: "card0 Intel Alderlake_n (Gen12) pci:vendor=8086,device=46D0,card=0"
# or: "card0 Intel Alderlake_n (Gen12) pci:0000:00:02.0"
if (/^(card\d+)\s+(.+?)\s+(pci:[^\s]+)/) {
my $card = $1;
my $name = $2;
my $path = $3;
push @devices, {
card => $card,
name => $name,
path => $path,
drm_path => "/dev/dri/$card"
};
_debug(__LINE__, "Found GPU device: $card -> $name ($path)");
}
}
close $fh;
} else {
_debug(__LINE__, "Failed to run intel_gpu_top -L: $!");
}
return @devices;
}
sub _collector_for_intel_device {
my ($device) = @_;
$0 = "pve-mod-gpu-intel-collector: $device->{card}";
my $drm_dev = "drm:/dev/dri/$device->{card}";
my $intel_gpu_top_pid = undef;
# Each device writes to its own file
my $device_state_file = "$pve_mod_working_dir/stats-$device->{card}.json";
_debug(__LINE__, "Collector started for device: $drm_dev, writing to $device_state_file");
# Set up signal handlers for graceful shutdown
my $shutdown = 0;
$SIG{TERM} = sub {
_debug(__LINE__, "Collector for $device->{card} received SIGTERM");
$shutdown = 1;
kill 'TERM', $intel_gpu_top_pid if defined $intel_gpu_top_pid && $intel_gpu_top_pid > 0;
};
$SIG{INT} = sub {
_debug(__LINE__, "Collector for $device->{card} received SIGINT");
$shutdown = 1;
kill 'TERM', $intel_gpu_top_pid if defined $intel_gpu_top_pid && $intel_gpu_top_pid > 0;
};
# Run intel_gpu_top once and keep reading from it
_debug(__LINE__, "About to open pipe to intel_gpu_top");
$intel_gpu_top_pid = open(my $fh, '-|', "intel_gpu_top -d $drm_dev -s 1000 -l 2>&1");
unless (defined $intel_gpu_top_pid && $intel_gpu_top_pid > 0) {
_debug(__LINE__, "Failed to run intel_gpu_top for $drm_dev: $!");
exit 1;
}
_debug(__LINE__, "Pipe opened successfully, PID=$intel_gpu_top_pid");
my $line_count = 0;
my $node_name = "node0"; # You may want to generate this based on device index
while (my $line = <$fh>) {
last if $shutdown;
$line_count++;
chomp $line;
# Skip header lines
next if $line =~ /MHz|IRQ|RC6|Power|RCS|BCS|VCS|VECS|req\s+act|^\s*$/;
# Check if this is a data line
if ($line =~ /^\s*[\d\s\.]+$/) {
my $stats = _parse_intel_gpu_line($line);
if ($stats) {
# Build device-specific structure (just the node, not the full Graphics/Intel hierarchy)
my $device_data = {
$node_name => {
name => $device->{name},
device_path => $device->{path},
drm_path => $device->{drm_path},
stats => $stats
}
};
# Write to device-specific file
eval {
open my $ofh, '>', $device_state_file or die "Failed to open $device_state_file: $!";
print $ofh JSON->new->pretty->encode($device_data);
close $ofh;
_debug(__LINE__, "Wrote stats to $device_state_file (line #$line_count)");
};
if ($@) {
_debug(__LINE__, "Error writing stats: $@");
}
}
}
}
close $fh;
_debug(__LINE__, "Collector for $device->{card} shutting down");
exit 0;
}
# ============================================================================
# AMD GPU Support (Placeholder)
# ============================================================================
sub _get_amd_gpu_devices {
# TODO: Implement AMD GPU detection
# Use rocminfo or similar tools to detect AMD GPUs
_debug(__LINE__, "AMD GPU support not yet implemented");
return ();
}
sub _parse_amd_gpu_line {
my ($line) = @_;
# TODO: Implement AMD GPU line parsing
# Parse rocm-smi or similar output
_debug(__LINE__, "AMD GPU line parsing not yet implemented");
return undef;
}
sub _collector_for_amd_device {
my ($device) = @_;
# TODO: Implement AMD GPU collector
_debug(__LINE__, "AMD GPU collector not yet implemented");
exit 0;
}
# ============================================================================
# NVIDIA GPU Support (Placeholder)
# ============================================================================
sub get_nvidia_gpu_devices {
# TODO: Implement NVIDIA GPU detection
# Use nvidia-smi to detect NVIDIA GPUs
_debug(__LINE__, "NVIDIA GPU support not yet implemented");
return ();
}
sub parse_nvidia_gpu_line {
my ($line) = @_;
# TODO: Implement NVIDIA GPU line parsing
# Parse nvidia-smi output
_debug(__LINE__, "NVIDIA GPU line parsing not yet implemented");
return undef;
}
sub collector_for_nvidia_device {
my ($device) = @_;
# TODO: Implement NVIDIA GPU collector
_debug(__LINE__, "NVIDIA GPU collector not yet implemented");
exit 0;
}
# ============================================================================
# Supporting functions
# ============================================================================
# Check if a process is alive
sub _is_process_alive {
my ($pid) = @_;
return -d "/proc/$pid";
}
sub _read_lock_pid {
my ($lock_path) = @_;
return undef unless open(my $fh, '<', $lock_path);
my $pid = <$fh>;
close($fh);
chomp $pid if defined $pid;
return $pid;
}
sub _acquire_exclusive_lock {
my ($lock_path, $purpose) = @_;
$purpose //= 'lock';
my $fh;
# Try to create lock file exclusively
if (sysopen($fh, $lock_path, O_CREAT|O_EXCL|O_WRONLY, 0644)) {
_debug(__LINE__, "Acquired $purpose on first try");
return $fh;
}
# Lock file creation failed - check if it's stale or held by another process
_debug(__LINE__, ucfirst($purpose) . " exists, checking if stale");
my $lock_pid = _read_lock_pid($lock_path);
if (!defined $lock_pid) {
_debug(__LINE__, "Could not read $purpose file: $!");
return undef;
}
if ($lock_pid eq '' || $lock_pid !~ /^\d+$/) {
_debug(__LINE__, "Invalid PID in $purpose: '" . ($lock_pid // 'undefined') . "', removing");
unlink($lock_path);
} elsif (_is_process_alive($lock_pid)) {
_debug(__LINE__, ucfirst($purpose) . " holder PID $lock_pid is still alive");
return undef;
} else {
_debug(__LINE__, ucfirst($purpose) . " holder PID $lock_pid is dead, removing stale lock");
unlink($lock_path);
}
# Try to acquire lock again after cleanup
unless (sysopen($fh, $lock_path, O_CREAT|O_EXCL|O_WRONLY, 0644)) {
_debug(__LINE__, "Failed to acquire $purpose on retry: $!");
return undef;
}
_debug(__LINE__, "Acquired $purpose after removing stale lock");
return $fh;
}
sub _is_lock_stale {
my ($lock_path) = @_;
return 0 unless open(my $fh, '<', $lock_path);
my $lock_pid = <$fh>;
chomp $lock_pid if defined $lock_pid;
close($fh);
# Invalid or missing PID
return 1 unless defined $lock_pid && $lock_pid =~ /^\d+$/;
# Valid PID but process is dead
return !_is_process_alive($lock_pid);
}
sub _ensure_pve_mod_directory_exists {
unless (-d $pve_mod_working_dir) {
_debug(__LINE__, "Creating directory $pve_mod_working_dir");
unless (mkdir($pve_mod_working_dir, 0755)) {
_debug(__LINE__, "Failed to create $pve_mod_working_dir: $!. PVE Mod cannot start.");
die "Failed to create $pve_mod_working_dir: $!";
}
_debug(__LINE__, "Directory $pve_mod_working_dir created");
} else {
_debug(__LINE__, "Directory $pve_mod_working_dir already exists");
}
}
sub _pve_mod_hello {
_debug(__LINE__, "PVE Mod is being started. Version $VERSION");
}
# ============================================================================
# API calls
# ============================================================================
sub get_graphic_stats {
# todo name the process without overruling other processes
_debug(__LINE__, "get_graphic_stats called");
_pve_mod_hello();
# Start PVE Mod
_pve_mod_starter();
# Find all device-specific stat files
my $dh;
unless (opendir($dh, $stats_dir)) {
_debug(__LINE__, "Failed to open stats directory: $stats_dir: $!");
return $last_snapshot;
}
my @stat_files = grep { /^stats-card\d+\.json$/ } readdir($dh);
closedir($dh);
unless (@stat_files) {
_debug(__LINE__, "No device stat files found in $stats_dir");
return $last_snapshot;
}
_debug(__LINE__, "Found " . scalar(@stat_files) . " device stat file(s): " . join(', ', @stat_files));
# Check if any files have been modified
my $newest_mtime = 0;
my $files_changed = 0;
foreach my $file (@stat_files) {
my $filepath = "$stats_dir/$file";
my @stat = stat($filepath);
if (@stat && $stat[9] > $newest_mtime) {
$newest_mtime = $stat[9];
}
}
if ($newest_mtime == $last_mtime) {
_debug(__LINE__, "No device files modified, returning cached snapshot");
return $last_snapshot;
}
_debug(__LINE__, "Device files modified ($last_mtime -> $newest_mtime), reading and merging files");
# Merge all device files
my $merged = {
Graphics => {
Intel => {}
}
};
foreach my $file (@stat_files) {
my $filepath = "$stats_dir/$file";
_debug(__LINE__, "Reading device file: $filepath");
eval {
my $fh;
unless (open($fh, '<', $filepath)) {
_debug(__LINE__, "Failed to open $filepath: $!");
return;
}
local $/;
my $json = <$fh>;
close($fh);
_debug(__LINE__, "Read $file, JSON length: " . length($json) . " bytes");
my $device_data = decode_json($json);
# Merge this device's data into the main structure
foreach my $node_name (keys %$device_data) {
$merged->{Graphics}->{Intel}->{$node_name} = $device_data->{$node_name};
_debug(__LINE__, "Merged node '$node_name' from $file");
}
};
if ($@) {
_debug(__LINE__, "Failed to read/parse $filepath: $@");
}
}
# Update cache
$last_snapshot = $merged;
$last_mtime = $newest_mtime;
$last_get_graphic_stats_time = time();
_debug(__LINE__, "Successfully merged " . scalar(keys %{$merged->{Graphics}->{Intel}}) . " device node(s)");
# Notify pve_mod_worker of activity
_notify_pve_mod_worker();
return $last_snapshot;
}
# ============================================================================
# Main Collector
# ============================================================================
sub _start_graphics_collectors {
if ($intel_gpu_enabled == 0 && $amd_gpu_enabled == 0 && $nvidia_gpu_enabled == 0) {
_debug(__LINE__, "No GPU types enabled, skipping collector startup");
return;
}
else {
_debug(__LINE__, "Starting graphics collectors");
}
# NOW check if collectors are already running (while holding startup lock)
my %existing_collectors;
if (-f $lock_file) {
_debug(__LINE__, "Lock file exists: $lock_file");
if (open(my $lock_fh, '<', $lock_file)) {
_debug(__LINE__, "Opened lock file for reading");
flock($lock_fh, LOCK_EX) or _debug(__LINE__, "Failed to lock $lock_file: $!");
while (my $line = <$lock_fh>) {
chomp $line;
if ($line =~ /^(\d+)\s+(\S+)/) {
$existing_collectors{$2} = $1;
} elsif ($line =~ /^(\d+)$/) {
# Backward compatibility: only PID, no card
$existing_collectors{"unknown"} = $1;
}
}
close($lock_fh);
} else {
_debug(__LINE__, "Failed to open lock file: $!");
}
} else {
_debug(__LINE__, "Lock file does not exist. Clean start");
}
# Generalized device collector management for future AMD/NVIDIA support
my @all_devices;
my @all_types;
my @all_collectors;
# Intel
if ($intel_gpu_enabled) {
_debug(__LINE__, "Intel GPU support enabled");
_debug(__LINE__, "Checking for intel_gpu_top");
unless (-x '/usr/bin/intel_gpu_top') {
_debug(__LINE__, "intel_gpu_top not executable");
unlink($startup_lock);
return;
}
_debug(__LINE__, "intel_gpu_top is executable");
_debug(__LINE__, "Getting Intel GPU devices");
my @intel_devices = _get_intel_gpu_devices();
unless (@intel_devices) {
_debug(__LINE__, "No Intel GPU devices found");
unlink($startup_lock);
return;
}
_debug(__LINE__, "Found " . scalar(@intel_devices) . " Intel GPU device(s)");
foreach my $device (@intel_devices) {
push @all_devices, $device;
push @all_types, 'intel';
}
}
# AMD (future)
if ($amd_gpu_enabled) {
my @amd_devices = _get_amd_gpu_devices();
_debug(__LINE__, "Got " . scalar(@amd_devices) . " AMD devices");
foreach my $device (@amd_devices) {
push @all_devices, $device;
push @all_types, 'amd';
}
}
# NVIDIA (future)
if ($nvidia_gpu_enabled) {
my @nvidia_devices = get_nvidia_gpu_devices();
_debug(__LINE__, "Got " . scalar(@nvidia_devices) . " NVIDIA devices");
foreach my $device (@nvidia_devices) {
push @all_devices, $device;
push @all_types, 'nvidia';
}
}
my @child_pids;
my @child_devices;
my @child_types;
for (my $i = 0; $i < @all_devices; $i++) {
my $device = $all_devices[$i];
my $type = $all_types[$i];
my $card = $device->{card};
my $existing_pid = $existing_collectors{$card};
if ($existing_pid && _is_process_alive($existing_pid)) {
_debug(__LINE__, "Collector for $type $card already running with PID $existing_pid");
push @child_pids, $existing_pid;
push @child_devices, $device;
push @child_types, $type;
next;
}
_debug(__LINE__, "About to fork collector for $type $card");
my $pid = fork();
unless (defined $pid) {
_debug(__LINE__, "fork failed: $!");
unlink($startup_lock);
die "fork failed: $!";
}
if ($pid == 0) {
# Child process
_debug(__LINE__, "In child process for $type $card");
if ($type eq 'intel') {
_collector_for_intel_device($device);
} elsif ($type eq 'amd') {
_collector_for_amd_device($device);
} elsif ($type eq 'nvidia') {
collector_for_nvidia_device($device);
} else {
_debug(__LINE__, "Unknown GPU type $type for $card");
exit(1);
}
# Should not reach here
exit(0);
} else {
_debug(__LINE__, "Forked child PID $pid for $type $card");
push @child_pids, $pid;
push @child_devices, $device;
push @child_types, $type;
}
}
_debug(__LINE__, "Active children: " . join(", ", @child_pids));
# Write child PIDs and device cards/types to lock file
if (open(my $lock_fh, '>', $lock_file)) {
_debug(__LINE__, "Opened lock file for writing");
for (my $i = 0; $i < @child_pids; $i++) {
my $pid = $child_pids[$i];
my $device = $child_devices[$i];
my $type = $child_types[$i];
my $card = $device->{card} // '';
print $lock_fh "$pid $card $type\n";
}
flock($lock_fh, LOCK_UN);
close($lock_fh);
_debug(__LINE__, "Wrote " . scalar(@child_pids) . " collector PID(s) to lock file");
} else {
_debug(__LINE__, "Failed to open lock file for writing: $!");
foreach my $pid (@child_pids) {
_debug(__LINE__, "Killing child $pid due to lock file write failure");
kill 'TERM', $pid;
}
unlink($startup_lock);
return;
}
# Wait briefly to ensure collector is actually running
sleep 0.1;
# Verify at least one child is still alive (by PID only)
my $any_alive = 0;
for (my $i = 0; $i < @child_pids; $i++) {
my $pid = $child_pids[$i];
my $device = $child_devices[$i];
my $card = $device->{card} // '';
my $alive = kill(0, $pid);
if ($alive) {
$any_alive = 1;
_debug(__LINE__, "Verified child PID $pid for $card is alive");
} else {
_debug(__LINE__, "WARNING - Child PID $pid for $card died immediately!");
}
}
unless ($any_alive) {
_debug(__LINE__, "ERROR - No children alive after fork!");
}
_debug(__LINE__, "Graphics collectors started");
}
# ============================================================================
# PVE Mod Worker
# ============================================================================
sub _pve_mod_starter {
# Check if pve_mod_worker is already running - if so, entire system is already up
_debug(__LINE__, "Checking if pve_mod_worker is already running");
if (_is_pve_mod_worker_running()) {
_debug(__LINE__, "pve_mod_worker process already running, system is already started");
return "pve_mod_worker process already running, system is already started";
}
_debug(__LINE__, "PVE mod worker is not running. PVE Mod will be started.");
# Ensure directory exists
_ensure_pve_mod_directory_exists();
# Try to acquire startup lock FIRST (prevents race conditions)
_debug(__LINE__, "Trying to acquire startup lock: $startup_lock");
my $startup_fh = _acquire_exclusive_lock($startup_lock, 'startup lock');
return unless $startup_fh;
print $startup_fh "$$\n";
close($startup_fh);
_debug(__LINE__, "Wrote PID, $$, to startup lock");
# Start graphics collectors
_start_graphics_collectors();
# Start sensor collector
# TBD
# Start UPS collector
# TBD
_debug(__LINE__, "All collectors started");
# Start pve mod workers
_pve_mod_worker();
# Remove startup lock LAST
unlink($startup_lock);
_debug(__LINE__, "Released startup lock");
_debug(__LINE__, "pve_mod_worker started successfully, returning");
}
# ============================================================================
# PVE Mod Worker
# ============================================================================
sub _pve_mod_worker {
_debug(__LINE__, "_pve_mod_worker called");
# Check if worker is already running
my $pve_mod_worker_fh = _acquire_exclusive_lock($pve_mod_worker_lock, 'pve_mod_worker lock');
return unless $pve_mod_worker_fh;
print $pve_mod_worker_fh "$$\n";
close($pve_mod_worker_fh);
_debug(__LINE__, "Forking new pve_mod_worker process");
my $pve_mod_worker_pid = fork();
unless (defined $pve_mod_worker_pid) {
_debug(__LINE__, "Failed to fork pve_mod_worker process: $!");
return;
}
if ($pve_mod_worker_pid == 0) {
# Child process - run the pve_mod_worker
_debug(__LINE__, "Child process forked, calling _pve_mod_keep_alive");
_pve_mod_keep_alive();
exit(0); # Should never reach here
} else {
# Parent process - write PID to lock file
_debug(__LINE__, "Forked pve_mod_worker process with PID $pve_mod_worker_pid");
if (open my $fh, '>', $pve_mod_worker_lock) {
print $fh "$pve_mod_worker_pid\n";
close $fh;
_debug(__LINE__, "Wrote pve_mod_worker PID to lock file: $pve_mod_worker_lock");
} else {
_debug(__LINE__, "Failed to write pve_mod_worker lock file: $!");
kill('TERM', $pve_mod_worker_pid);
}
}
_debug(__LINE__, "pve_mod_worker process started successfully");
}
sub _notify_pve_mod_worker {
_debug(__LINE__, "_notify_pve_mod_worker called");
unless (-f $pve_mod_worker_lock) {
_debug(__LINE__, "pve_mod_worker lock file does not exist");
return;
}
_debug(__LINE__, "pve_mod_worker lock file exists, reading PID");
if (open my $fh, '<', $pve_mod_worker_lock) {
my $pid = <$fh>;
close $fh;
chomp $pid if defined $pid;
if (defined $pid && $pid =~ /^(\d+)$/) {
# Untaint by capturing in regex - $1 is now untainted
my $clean_pid = $1;
if (_is_process_alive($clean_pid)) {
_debug(__LINE__, "Sending USR1 signal to pve_mod_worker PID $clean_pid");
my $result = kill('USR1', $clean_pid);
_debug(__LINE__, "Signal result: $result");
} else {
_debug(__LINE__, "pve_mod_worker process $clean_pid is not alive, removing stale lock");
unlink($pve_mod_worker_lock);
}
} else {
# Stale lock, remove it
_debug(__LINE__, "pve_mod_worker lock is stale (PID: " . ($pid // 'undefined') . "), removing");
unlink($pve_mod_worker_lock);
}
} else {
_debug(__LINE__, "Failed to open pve_mod_worker lock file: $!");
}
}
sub _pve_mod_keep_alive {
_debug(__LINE__, "pve_mod_worker process started with PID $$");
my $last_activity = time();
# Set up signal handlers
$SIG{USR1} = sub {
$last_activity = time();
_debug(__LINE__, "Activity ping received");
};
$SIG{TERM} = sub {
_debug(__LINE__, "pve_mod_worker received SIGTERM, shutting down");
unlink($pve_mod_worker_lock) if -f $pve_mod_worker_lock;
exit(0);
};
$SIG{INT} = sub {
_debug(__LINE__, "pve_mod_worker received SIGINT, shutting down");
unlink($pve_mod_worker_lock) if -f $pve_mod_worker_lock;
exit(0);
};
_debug(__LINE__, "Entering pve_mod_worker loop, timeout=${COLLECTOR_TIMEOUT}s");
while (1) {
_debug(__LINE__, "pve_mod_worker loop start: checking activity");
my $idle_time = time() - $last_activity;
_debug(__LINE__, "pve_mod_worker loop: idle_time=${idle_time}s, timeout=${COLLECTOR_TIMEOUT}s");
if ($idle_time > $COLLECTOR_TIMEOUT) {
_debug(__LINE__, "Timeout reached, stopping collectors");
_stop_collectors();
_debug(__LINE__, "Collectors stopped, exiting pve_mod_worker");
unlink($pve_mod_worker_lock) if -f $pve_mod_worker_lock;
exit(0);
}
sleep(1);
}
# Should never reach here
_debug(__LINE__, "pve_mod_worker loop exited unexpectedly!");
}
sub _is_pve_mod_worker_running {
return -f $pve_mod_worker_lock;
}
# ============================================================================
# Other
# ============================================================================
sub _stop_collectors {
_debug(__LINE__, "Stopping all collectors");
# Read current PIDs from lock file
my @pids;
if (open my $lock_fh, '<', $lock_file) {
while (my $line = <$lock_fh>) {
chomp $line;
# Extract PID from "PID card type" format
if ($line =~ /^(\d+)/) {
push @pids, $1;
}
}
close($lock_fh);
}
_debug(__LINE__, "Cleanup complete_1");
if (@pids) {
_debug(__LINE__, "Sending SIGTERM to " . scalar(@pids) . " collector process(es)");
foreach my $pid (@pids) {
kill('TERM', $pid) if kill(0, $pid);
}
_debug(__LINE__, "Cleanup complete_2");
# Wait up to 5 seconds for graceful shutdown
my $timeout = 5;
my $start = time();
while (time() - $start < $timeout) {
my $any_alive = 0;
foreach my $pid (@pids) {
if (kill(0, $pid)) {
$any_alive = 1;
last;
}
}
last unless $any_alive;
select(undef, undef, undef, 0.1);
}
_debug(__LINE__, "Cleanup complete_3");
# Force kill any survivors
foreach my $pid (@pids) {
if (kill(0, $pid)) {
_debug(__LINE__, "Force killing collector process $pid");
kill('KILL', $pid);
}
}
_debug(__LINE__, "Cleanup complete_4");
}
if (-f $state_file) {
unlink $state_file or _debug(__LINE__, "Failed to remove $state_file: $!");
}
if (-f $lock_file) {
unlink $lock_file or _debug(__LINE__, "Failed to remove $lock_file: $!");
}
# Remove pve mod worker directory and all files if it exists
if (-d $pve_mod_working_dir) {
remove_tree($pve_mod_working_dir, { error => \my $err });
_debug(__LINE__, "Cleanup errors: @$err") if @$err;
}
_debug(__LINE__, "Cleanup complete_5");
}
END { _stop_collectors() }
1;
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