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Sequential dynamic requests
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| #!/usr/bin/perl | |
| use Mojo::Base -strict; | |
| use Mojo::IOLoop; | |
| use Mojo::UserAgent; | |
| use Mojo::URL; | |
| my $ua = Mojo::UserAgent->new(max_redirects => 3); | |
| sub find_new_url { | |
| my ($url, $dom) = @_; | |
| return undef unless my $new_url = $dom->find('a[href]')->shuffle->first->attr('href'); | |
| $new_url = Mojo::URL->new($new_url)->to_abs($url); | |
| say $new_url->to_string; | |
| return $new_url; | |
| } | |
| my $callback; | |
| $callback = sub { | |
| shift; # skip $ua | |
| my $tx = shift; | |
| my $url = find_new_url($tx->req->url, $tx->res->dom); | |
| return Mojo::IOLoop->stop unless $url; | |
| $ua->get($url => $callback); | |
| }; | |
| $ua->get('https://ru.wikipedia.org/' => $callback); | |
| Mojo::IOLoop->start; |
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| #!/usr/bin/perl | |
| use Mojo::Base -strict; | |
| use Mojo::IOLoop; | |
| use Mojo::UserAgent; | |
| use Mojo::URL; | |
| my $ua = Mojo::UserAgent->new(max_redirects => 3); | |
| sub find_new_url { | |
| my ($url, $dom) = @_; | |
| # find url from response and return; | |
| return undef unless my $new_url = $dom->find('a[href]')->shuffle->first->attr('href'); | |
| $new_url = Mojo::URL->new($new_url)->to_abs($url); | |
| say $new_url->to_string; | |
| return $new_url; | |
| } | |
| my $delay_step; | |
| $delay_step = sub { | |
| shift; # skip delay | |
| my $tx = shift; | |
| my $url = find_new_url($tx->req->url, $tx->res->dom); | |
| return Mojo::IOLoop->stop unless $url; | |
| my $delay = Mojo::IOLoop->delay($delay_step); | |
| $ua->get($url => $delay->begin); | |
| }; | |
| my $delay = Mojo::IOLoop->delay($delay_step); | |
| $ua->get('https://ru.wikipedia.org/' => $delay->begin); | |
| Mojo::IOLoop->start; |
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| #!/usr/bin/perl | |
| use Mojo::Base -strict; | |
| use Mojo::IOLoop; | |
| use Mojo::UserAgent; | |
| my $ua = Mojo::UserAgent->new(max_redirects => 3); | |
| my $urls = ['https://www.google.ru', 'https://twitter.com', 'http://algolist.ru']; | |
| my $delay = Mojo::IOLoop->delay; | |
| for my $u (@$urls) { | |
| push @{$delay->remaining}, sub { | |
| my ($delay, $tx) = @_; | |
| if ($tx) { | |
| # do what you want | |
| } | |
| say $u; | |
| $ua->get($u => $delay->begin); | |
| }; | |
| } | |
| # last callback | |
| push @{$delay->remaining}, sub { | |
| my ($delay, $tx) = @_; | |
| if ($tx) { | |
| # do what you want | |
| } | |
| say 'Done'; | |
| }; | |
| Mojo::IOLoop->next_tick($delay->begin()); | |
| $delay->wait; |
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