From 2ca4a50194108d378b961fb8ddc9a0455933d96d Mon Sep 17 00:00:00 2001 From: Daniel Friesel Date: Wed, 16 Sep 2020 17:21:49 +0200 Subject: all requests but IRIS are async now --- lib/DBInfoscreen/Helper/Wagonorder.pm | 139 ++++++++++++++++++++++++++-------- 1 file changed, 107 insertions(+), 32 deletions(-) (limited to 'lib/DBInfoscreen/Helper') diff --git a/lib/DBInfoscreen/Helper/Wagonorder.pm b/lib/DBInfoscreen/Helper/Wagonorder.pm index 91006fc..5f0555d 100644 --- a/lib/DBInfoscreen/Helper/Wagonorder.pm +++ b/lib/DBInfoscreen/Helper/Wagonorder.pm @@ -4,10 +4,7 @@ use strict; use warnings; use 5.020; -use DateTime; -use Encode qw(decode encode); -use Mojo::JSON qw(decode_json); -use XML::LibXML; +use Mojo::Promise; sub new { my ( $class, %opt ) = @_; @@ -23,48 +20,126 @@ sub new { } -sub is_available { +sub is_available_p { my ( $self, $train, $wr_link ) = @_; - - if ( $self->check_wagonorder( $train->train_no, $wr_link ) ) { - return 1; - } - elsif ( $train->is_wing ) { - my $wing = $train->wing_of; - if ( $self->check_wagonorder( $wing->train_no, $wr_link ) ) { - return 1; + my $promise = Mojo::Promise->new; + + $self->check_wagonorder_p( $train->train_no, $wr_link )->then( + sub { + $promise->resolve; + return; + }, + sub { + if ( $train->is_wing ) { + my $wing = $train->wing_of; + return $self->check_wagonorder_p( $wing->train_no, $wr_link ); + } + else { + $promise->reject; + return; + } } - } - return; + )->then( + sub { + $promise->resolve; + return; + }, + sub { + $promise->reject; + return; + } + )->wait; + + return $promise; } -sub check_wagonorder { +sub check_wagonorder_p { my ( $self, $train_no, $wr_link ) = @_; + my $promise = Mojo::Promise->new; + my $url = "https://lib.finalrewind.org/dbdb/has_wagonorder/${train_no}/${wr_link}"; - my $cache = $self->{cache}; + my $cache = $self->{main_cache}; - if ( my $content = $self->{cache}->get($url) ) { - return $content eq 'y' ? 1 : undef; + if ( my $content = $cache->get($url) ) { + if ( $content eq 'y' ) { + return $promise->resolve; + } + else { + return $promise->reject; + } } - my $ua = $self->{user_agent}->request_timeout(2); + $self->{user_agent}->request_timeout(5)->head_p( $url => $self->{header} ) + ->then( + sub { + my ($tx) = @_; + if ( $tx->result->is_success ) { + $cache->set( $url, 'y' ); + $promise->resolve; + } + else { + $cache->set( $url, 'n' ); + $promise->reject; + } + return; + } + )->catch( + sub { + $cache->set( $url, 'n' ); + $promise->reject; + return; + } + )->wait; + return $promise; +} + +sub get_p { + my ( $self, $train_no, $api_ts ) = @_; - my $res = eval { $ua->head( $url => $self->{header} )->result }; + my $url + = "https://www.apps-bahn.de/wr/wagenreihung/1.0/${train_no}/${api_ts}"; - if ($@) { - $self->{log}->debug("check_wagonorder($url): $@"); - return; - } - if ( $res->is_error ) { - $cache->set( $url, 'n' ); - return; - } - else { - $cache->set( $url, 'y' ); - return 1; + my $cache = $self->{realtime_cache}; + + my $promise = Mojo::Promise->new; + + if ( my $content = $cache->thaw($url) ) { + $self->{log}->debug("GET $url (cached)"); + return $promise->resolve($content); } + + $self->{user_agent}->request_timeout(10)->get_p( $url => $self->{header} ) + ->then( + sub { + my ($tx) = @_; + + if ( my $err = $tx->error ) { + $self->{log}->warn( + "wagonorder->get_p($url): HTTP $err->{code} $err->{message}" + ); + $promise->reject( + "GET $url returned HTTP $err->{code} $err->{message}"); + return; + } + + $self->{log}->debug("GET $url (OK)"); + my $json = $tx->res->json; + + $cache->freeze( $url, $json ); + $promise->resolve($json); + return; + } + )->catch( + sub { + my ($err) = @_; + $self->{log}->warn("GET $url: $err"); + $promise->reject("GET $url: $err"); + return; + } + )->wait; + return $promise; } 1; -- cgit v1.2.3