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authorDaniel Friesel <derf@finalrewind.org>2020-09-16 17:21:49 +0200
committerDaniel Friesel <derf@finalrewind.org>2020-09-16 17:21:49 +0200
commit2ca4a50194108d378b961fb8ddc9a0455933d96d (patch)
treee9e7dee370b54f473bdfcaad543f085dd16a92d4 /lib/DBInfoscreen/Helper/Wagonorder.pm
parent65aab8c7f827d0c0edf1249ea30c287c5f91ace8 (diff)
all requests but IRIS are async now
Diffstat (limited to 'lib/DBInfoscreen/Helper/Wagonorder.pm')
-rw-r--r--lib/DBInfoscreen/Helper/Wagonorder.pm139
1 files changed, 107 insertions, 32 deletions
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;