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package LWP::UserAgent::Caching::Simple; |
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=head1 NAME |
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LWP::UserAgent::Caching::Simple - The first 'hard thing' made easy --- simple |
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=head1 VERSION |
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Version 0.06 |
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=cut |
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our $VERSION = '0.06'; |
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use strict; |
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use warnings; |
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use parent 'LWP::UserAgent::Caching'; |
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use CHI; |
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use JSON; |
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use parent 'Exporter'; |
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our @EXPORT_OK = qw(get_from_json); |
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=head1 SYNOPSIS |
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use LWP::UserAgent::Caching::Simple; |
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my $ua = LWP::UserAgent::Caching::Simple->new; |
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my $resp = $ua->get( 'http://example.com/cached?' ); |
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and maybe even something quick: |
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# use a built-in default User-Agent for quick one timers |
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use LWP::UserAgent::Caching::Simple qw(get_from_json); |
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my $hashref = get_from_json ( |
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'http://example.com/cached?', |
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'Cache-Control' => 'max-stale', # without delta-seconds, unlimited |
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'Cache-Control' => 'no-transform', # something not implemented |
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); |
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=head1 DESCRIPTION |
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This is a simplified version of L with sensible |
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defaults and less options. For more control and more options, please use that |
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module. |
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=cut |
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sub _chi_cache { |
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return CHI->new( |
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driver => 'File', |
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root_dir => '/tmp/LWP_UserAgent_Caching', |
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file_extension => '.cache', |
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) |
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} |
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sub new { |
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my ( $class) = @_; |
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my $self = $class->SUPER::new( |
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http_caching => { |
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cache => _chi_cache(), |
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} |
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); |
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return $self |
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} |
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{ |
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my $ua; |
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sub _default_useragent { |
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$ua = __PACKAGE__->new() unless $ua; |
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return $ua |
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} |
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} |
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sub get_from_json { |
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my $resp = _default_useragent()->get(@_, Accept => 'application/json'); |
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return decode_json($resp->decoded_content()) if $resp->is_success; |
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warn "HTTP Status message ${\$resp->code} [${\$resp->message}] GET $_[0]\n"; |
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return |
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} |
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=head1 METHODS |
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Since this is a subclass of L it has it's methods, like |
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the following object methods: |
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=over |
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=item request |
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=item get |
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=item post |
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=item put |
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=item delete |
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=back |
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=head1 EXPORT_OK |
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=head2 get_from_json |
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This will simply make a GET request to a server, with the C Header set |
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to C. On succes, it will turn the returned json (as requested) |
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into a perl data structure. Otherwise it will be C and print a warning. |
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=head1 CAVEATS |
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This is a super simplified way of making a straightforward request. It can |
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handle more complex requests as well, using |
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my $resp = $ua->request($http_rqst); |
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which will give a full C object back. The UserAgent is a full |
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subclass of the standard L, and one can still change the setting |
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of that, like e.g. the C<< $ua->agent('SecretAgent/007') >>. |
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=head1 AUTHOR |
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Theo van Hoesel, C<< | >>
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=head1 LICENSE AND COPYRIGHT |
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Copyright 2016 .. 2018 Theo van Hoesel. |
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=cut |
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1; |