* Created a new tool (that may go away) for monitoring for network changes as quickly and with as few resources as possible. Signed-off-by: Digimer <digimer@alteeve.ca>main
Digimer
7 years ago
parent
f72d8e0f70
commit
fe4a1d5a1c
6 changed files with 174 additions and 15 deletions
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#!/usr/bin/perl |
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# |
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# This daemon watches for network changes and updates a cache file when changes are found. |
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# |
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# NOTE: This daemon does NOT connect to the databases. This is meant to be as quick as possible and to use as |
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# few resources as possible. It will exit with 'ok' or 'change' depending on if something in the |
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# network changed. |
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# |
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# Exit codes; |
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# 0 = Normal exit |
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# |
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# TODO: |
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# |
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|
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use strict; |
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use warnings; |
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use Time::HiRes qw(gettimeofday tv_interval); |
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my $start_time = [gettimeofday]; |
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use Anvil::Tools; |
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|
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my $THIS_FILE = ($0 =~ /^.*\/(.*)$/)[0]; |
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my $running_directory = ($0 =~ /^(.*?)\/$THIS_FILE$/)[0]; |
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if (($running_directory =~ /^\./) && ($ENV{PWD})) |
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{ |
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$running_directory =~ s/^\./$ENV{PWD}/; |
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} |
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|
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# Turn off buffering so that the pinwheel will display while waiting for the SSH call(s) to complete. |
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$| = 1; |
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|
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my $anvil = Anvil::Tools->new(); |
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$anvil->Log->level({set => 2}); |
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|
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scan($anvil); |
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|
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my $total = tv_interval ($start_time, [gettimeofday]); |
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print "Total runtime: [".$total."]\n"; |
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$anvil->nice_exit({exit_code => 0}); |
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|
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|
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############################################################################################################# |
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# Functions # |
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############################################################################################################# |
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|
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sub scan |
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{ |
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my ($anvil) = @_; |
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|
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my $directory = $anvil->data->{path}{sysfs}{network_interfaces}; |
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print $THIS_FILE." ".__LINE__."; directory: [".$directory."]\n"; |
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local(*DIRECTORY); |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 3, key => "log_0018", variables => { directory => $directory }}); |
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opendir(DIRECTORY, $directory); |
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while(my $file = readdir(DIRECTORY)) |
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{ |
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next if $file eq "."; |
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next if $file eq ".."; |
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next if $file eq "lo"; |
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my $full_path = "$directory/$file"; |
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print $THIS_FILE." ".__LINE__."; full_path: [".$full_path."]\n"; |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 3, list => { full_path => $full_path }}); |
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if (-d $full_path) |
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{ |
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# Pull out the data I want. Note that some of these don't exist with virtio-net interfaces. |
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my $interface = $file; |
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my $mac_address = -e $full_path."/address" ? $anvil->Storage->read_file({file => $full_path."/address"}) : ""; |
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my $link_state = -e $full_path."/carrier" ? $anvil->Storage->read_file({file => $full_path."/carrier"}) : 0; |
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my $mtu = -e $full_path."/mtu" ? $anvil->Storage->read_file({file => $full_path."/mtu"}) : 0; |
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my $duplex = -e $full_path."/duplex" ? $anvil->Storage->read_file({file => $full_path."/duplex"}) : "unknown"; # full or half? |
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my $operational = -e $full_path."/operstate" ? $anvil->Storage->read_file({file => $full_path."/operstate"}) : "unknown"; # up or down |
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my $speed = $link_state ? $anvil->Storage->read_file({file => $full_path."/speed"}) : 0; # Mbps (ie: 1000 = Gbps), gives a very high number for unplugged link |
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if ($speed > 100000) |
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{ |
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# NOTE: This is probably 0 now... Though someday >100 Gbps will be reasonable |
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# and we'll need to change this. |
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$speed = 0; |
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} |
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|
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# Find the media, if possible. |
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my $media = "unknown"; |
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my $shell_call = $anvil->data->{path}{exe}{ethtool}." $interface"; |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 3, list => { shell_call => $shell_call }}); |
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my $ethtool = $anvil->System->call({shell_call => $shell_call}); |
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foreach my $line (split/\n/, $ethtool) |
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{ |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 3, list => { line => $line }}); |
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if ($line =~ /Supported ports: \[ (.*?) \]/i) |
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{ |
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$media = lc($1); |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 3, list => { media => $media }}); |
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last; |
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} |
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} |
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|
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# Log |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 3, list => { |
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interface => $interface, |
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mac_address => $mac_address, |
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link_state => $link_state, |
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mtu => $mtu, |
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duplex => $duplex, |
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operational => $operational, |
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speed => $speed, |
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media => $media, |
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}}); |
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} |
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} |
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closedir(DIRECTORY); |
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return(0); |
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} |
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