[SOLVED] How can i control the same app in two servers?


 
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Top Forums UNIX for Dummies Questions & Answers [SOLVED] How can i control the same app in two servers?
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Old 09-07-2012
The lockfile's sheer existence is the indicator that the app is running. You can leave it empty, or you can put some info about the running instance of your app into it like PID, start time, user, server it runs on, so it can be used for other administrative tasks as well. You have to make sure it disappears once the app stops, even if it is, say, aborted or terminated by a signal.
 
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Mojo(3pm)						User Contributed Perl Documentation						 Mojo(3pm)

NAME
Mojo - Duct tape for the HTML5 web! SYNOPSIS
use Mojo::Base 'Mojo'; # All the complexities of CGI, PSGI, HTTP and WebSockets get reduced to a # single method call! sub handler { my ($self, $tx) = @_; # Request my $method = $tx->req->method; my $path = $tx->req->url->path; # Response $tx->res->code(200); $tx->res->headers->content_type('text/plain'); $tx->res->body("$method request for $path!"); # Resume transaction $tx->resume; } DESCRIPTION
Mojo provides a flexible runtime environment for Perl real-time web frameworks. It provides all the basic tools and helpers needed to write simple web applications and higher level web frameworks such as Mojolicious. See Mojolicious for more! ATTRIBUTES
Mojo implements the following attributes. "home" my $home = $app->home; $app = $app->home(Mojo::Home->new); The home directory of your application, defaults to a Mojo::Home object which stringifies to the actual path. # Generate portable path relative to home directory my $path = $app->home->rel_file('data/important.txt'); "log" my $log = $app->log; $app = $app->log(Mojo::Log->new); The logging layer of your application, defaults to a Mojo::Log object. # Log debug message $app->log->debug('It works!'); "ua" my $ua = $app->ua; $app = $app->ua(Mojo::UserAgent->new); A full featured HTTP 1.1 user agent for use in your applications, defaults to a Mojo::UserAgent object. Note that this user agent should not be used in plugins, since non-blocking requests that are already in progress will interfere with new blocking ones. # Perform blocking request my $body = $app->ua->get('mojolicio.us')->res->body; METHODS
Mojo inherits all methods from Mojo::Base and implements the following new ones. "new" my $app = Mojo->new; Construct a new Mojo application. Will automatically detect your home directory and set up logging to "log/mojo.log" if there's a "log" directory. "build_tx" my $tx = $app->build_tx; Transaction builder, defaults to building a Mojo::Transaction::HTTP object. "config" my $config = $app->config; my $foo = $app->config('foo'); $app = $app->config({foo => 'bar'}); $app = $app->config(foo => 'bar'); Application configuration. # Manipulate configuration $app->config->{foo} = 'bar'; my $foo = $app->config->{foo}; delete $app->config->{foo}; "handler" $app->handler($tx); The handler is the main entry point to your application or framework and will be called for each new transaction, which will usually be a Mojo::Transaction::HTTP or Mojo::Transaction::WebSocket object. Meant to be overloaded in a subclass. sub handler { my ($self, $tx) = @_; ... } SEE ALSO
Mojolicious, Mojolicious::Guides, <http://mojolicio.us>. perl v5.14.2 2012-09-05 Mojo(3pm)