Merge pull request #174 from Tsu-ba-me/issues/172-get-server-preview
Web UI: add endpoint for getting server previewmain
Digimer
3 years ago
committed by
GitHub
commit
f55a315d4b
7 changed files with 335 additions and 2 deletions
@ -0,0 +1,136 @@ |
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#!/usr/bin/perl |
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# |
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# Gets a server VM's screenshot and convert it to a Base64 string. |
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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 Anvil::Tools; |
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use JSON; |
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$| = 1; |
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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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my $anvil = Anvil::Tools->new(); |
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sub is_job_incomplete |
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{ |
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my $parameters = shift; |
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my $job_uuid = $parameters->{job_uuid}; |
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my $query = " |
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SELECT |
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job_progress |
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FROM |
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public.jobs |
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WHERE |
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job_uuid = ".$anvil->Database->quote($job_uuid)." |
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;"; |
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my $job_progress = $anvil->Database->query({ query => $query, source => $THIS_FILE, line => __LINE__ })->[0]->[0]; |
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return $job_progress == 100 ? 0 : 1; |
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} |
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sub get_server_host_uuid |
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{ |
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my $parameters = shift; |
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my $server_uuid = $parameters->{server_uuid}; |
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my $query = " |
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SELECT |
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server_host_uuid |
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FROM |
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public.servers |
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WHERE |
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server_uuid = ".$anvil->Database->quote($server_uuid)." |
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;"; |
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return $anvil->Database->query({ query => $query, source => $THIS_FILE, line => __LINE__ })->[0]->[0]; |
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} |
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sub get_screenshot |
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{ |
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my $parameters = shift; |
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my $server_uuid = $parameters->{server_uuid}; |
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my $server_host_uuid = $parameters->{server_host_uuid}; |
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my $resize_args = defined $parameters->{resize_args} ? $parameters->{resize_args} : "512x512"; |
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my ($job_uuid) = $anvil->Database->insert_or_update_jobs({ |
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job_command => $anvil->data->{path}{exe}{'anvil-get-server-screenshot'}, |
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job_data => "server-uuid=".$server_uuid."\nresize=".$resize_args, |
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job_host_uuid => $server_host_uuid, |
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job_description => "job_0357", |
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job_name => "cgi-bin::get_server_screenshot::".$server_uuid, |
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job_progress => 0, |
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job_title => "job_0356" |
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}); |
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# Wait until the job is complete before continuing. |
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while(is_job_incomplete({ job_uuid => $job_uuid })) |
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{ |
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sleep(2); |
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} |
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my $query = " |
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SELECT state_note |
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FROM public.states |
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WHERE state_name = ".$anvil->Database->quote("server_screenshot::".$server_uuid)." |
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;"; |
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my $encoded_image = $anvil->Database->query({ query => $query, source => $THIS_FILE, line => __LINE__ })->[0]->[0]; |
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return $encoded_image; |
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} |
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$anvil->Get->switches; |
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$anvil->Database->connect; |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 2, secure => 0, key => "log_0132"}); |
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if (not $anvil->data->{sys}{database}{connections}) |
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{ |
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# No databases, exit. |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 0, 'print' => 1, priority => "err", key => "error_0003"}); |
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$anvil->nice_exit({exit_code => 1}); |
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} |
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my $cookie_problem = $anvil->Account->read_cookies(); |
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# Don't do anything data-related if the user is not logged in. |
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if ($cookie_problem) |
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{ |
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$anvil->Log->entry({ source => $THIS_FILE, line => __LINE__, level => 0, 'print' => 1, priority => "err", key => "error_0307" }); |
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$anvil->nice_exit({ exit_code => 1 }); |
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} |
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# Read in any CGI variables, if needed. |
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$anvil->Get->cgi(); |
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print $anvil->Template->get({ file => "shared.html", name => "json_headers", show_name => 0 })."\n"; |
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my $server_uuid = defined $anvil->data->{cgi}{server_uuid}{value} ? $anvil->data->{cgi}{server_uuid}{value} : $anvil->data->{switches}{'server-uuid'}; |
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my $resize_args = defined $anvil->data->{cgi}{resize}{value} ? $anvil->data->{cgi}{resize}{value} : $anvil->data->{switches}{'resize'}; |
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my $response_body = {}; |
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if ($server_uuid) |
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{ |
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my $encoded_image = get_screenshot({ |
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server_uuid => $server_uuid, |
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server_host_uuid => get_server_host_uuid({ server_uuid => $server_uuid }), |
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resize_args => $resize_args |
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}); |
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if (defined $encoded_image) |
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{ |
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$response_body->{screenshot} = $encoded_image; |
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} |
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} |
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print JSON->new->utf8->encode($response_body)."\n"; |
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@ -0,0 +1,186 @@ |
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#!/usr/bin/perl |
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# |
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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 Anvil::Tools; |
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$| = 1; |
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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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my $anvil = Anvil::Tools->new(); |
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sub system_call |
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{ |
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my $parameters = shift; |
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my $shell_call = $parameters->{shell_call}; |
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my ($shell_output, $shell_return_code) = $anvil->System->call({ shell_call => $shell_call }); |
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$anvil->Log->variables({ source => $THIS_FILE, line => __LINE__, level => 2, list => { |
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shell_call => $shell_call, |
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shell_output => $shell_output, |
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shell_return_code => $shell_return_code |
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} }); |
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return ($shell_output, $shell_return_code); |
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} |
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sub is_existing_server_screenshot_outdated |
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{ |
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my $parameters = shift; |
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my $server_uuid = $parameters->{server_uuid}; |
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my ($encoded_image, $variable_uuid, $variable_mtime) = $anvil->Database->read_variable({ variable_name => "server_screenshot::".$server_uuid }); |
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my $time_difference = time - $variable_mtime; |
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return $time_difference > 120 ? 1 : 0; |
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} |
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sub get_server_screenshot |
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{ |
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my $parameters = shift; |
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my $server_uuid = $parameters->{server_uuid}; |
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my ($resize_x, $resize_y) = split(/x/ , $parameters->{resize_args}); |
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my $shell_call = "virsh screenshot --domain ".$server_uuid." --file /dev/stdout | sed 's/Screenshot.*//'"; |
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if ($resize_x =~ /^\d+$/ && $resize_y =~ /^\d+$/) |
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{ |
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$shell_call .= " | pamscale -quiet -xyfit ".$resize_x." ".$resize_y; |
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$shell_call .= " | pamtopng -quiet"; |
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} |
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$shell_call .= " | base64 --wrap 0"; |
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my ($shell_output, $shell_return_code) = system_call({ shell_call => $shell_call }); |
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return $shell_return_code == 0 ? $shell_output : undef; |
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} |
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sub insert_server_screenshot |
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{ |
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my $parameters = shift; |
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my $server_uuid = $parameters->{server_uuid}; |
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my $encoded_image = $parameters->{encoded_image}; |
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$anvil->Database->insert_or_update_states({ |
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state_name => "server_screenshot::".$server_uuid, |
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state_note => $encoded_image |
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}); |
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} |
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$anvil->Get->switches; |
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$anvil->Database->connect; |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 2, secure => 0, key => "log_0132"}); |
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if (not $anvil->data->{sys}{database}{connections}) |
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{ |
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# No databases, exit. |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 0, 'print' => 1, priority => "err", key => "error_0003"}); |
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$anvil->nice_exit({exit_code => 1}); |
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} |
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# Try to get a job UUID if not given. |
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if (not $anvil->data->{switches}{'job-uuid'}) |
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{ |
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$anvil->data->{switches}{'job-uuid'} = $anvil->Job->get_job_uuid({ program => $THIS_FILE }); |
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$anvil->Log->variables({ source => $THIS_FILE, line => __LINE__, level => 2, list => { |
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"switches::job-uuid" => $anvil->data->{switches}{'job-uuid'} |
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} }); |
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} |
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# Handle this script as a job when job UUID is provided. |
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if ($anvil->data->{switches}{'job-uuid'}) |
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{ |
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$anvil->Job->clear(); |
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$anvil->Job->get_job_details(); |
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$anvil->Job->update_progress({ |
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progress => 1, |
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job_picked_up_by => $$, |
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job_picked_up_at => time, |
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message => "message_0263" |
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}); |
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foreach my $line (split/\n/, $anvil->data->{jobs}{job_data}) |
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{ |
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if ($line =~ /server-uuid=(.*?)$/) |
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{ |
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$anvil->data->{switches}{'server-uuid'} = $1; |
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} |
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if ($line =~ /resize=(.*?)$/) |
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{ |
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$anvil->data->{switches}{'resize'} = $1; |
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} |
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if ($line =~ /stdout=(.*?)$/) |
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{ |
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$anvil->data->{switches}{'stdout'} = $1; |
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} |
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} |
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} |
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my $server_uuid = $anvil->data->{switches}{'server-uuid'}; |
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my $resize_args = $anvil->data->{switches}{'resize'}; |
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my $is_stdout = $anvil->data->{switches}{'stdout'}; |
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my $job_uuid = $anvil->data->{switches}{'job-uuid'}; |
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$anvil->Log->variables({ source => $THIS_FILE, line => __LINE__, level => 2, list => { |
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server_uuid => $server_uuid, |
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resize_args => $resize_args, |
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is_stdout => $is_stdout, |
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job_uuid => $job_uuid |
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} }); |
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if ($server_uuid) |
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{ |
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my $encoded_image; |
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if ($is_stdout) |
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{ |
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$encoded_image = get_server_screenshot({ server_uuid => $server_uuid, resize_args => $resize_args }); |
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if (defined $encoded_image) |
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{ |
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print($encoded_image); |
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$anvil->Job->update_progress({ progress => 100, message => "message_0264" }); |
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} |
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else |
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{ |
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$anvil->Job->update_progress({ progress => 100, message => "message_0265" }); |
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} |
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} |
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elsif (is_existing_server_screenshot_outdated({ server_uuid => $server_uuid })) |
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{ |
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$encoded_image = get_server_screenshot({ server_uuid => $server_uuid, resize_args => $resize_args }); |
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if (defined $encoded_image) |
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{ |
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insert_server_screenshot({ server_uuid => $server_uuid, encoded_image => $encoded_image }); |
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$anvil->Job->update_progress({ progress => 100, message => "message_0264" }); |
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} |
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else |
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{ |
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$anvil->Job->update_progress({ progress => 100, message => "message_0265" }); |
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} |
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} |
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else |
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{ |
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$anvil->Job->update_progress({ progress => 100, message => "message_0266" }); |
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} |
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} |
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else |
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{ |
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$anvil->Job->update_progress({ progress => 100, message => "message_0266" }); |
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} |
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