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1 | package Promulger::List; |
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2 | use Moo; |
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3 | |
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4 | use autodie ':all'; |
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5 | use Carp; |
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6 | use Path::Class; |
7 | use Fcntl ':flock'; |
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8 | use Tie::File; |
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9 | use File::Slurp qw/read_file, write_file/; |
10 | use Data::Dumper; |
11 | $Data::Dumper::Purity = 1; |
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12 | |
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13 | use Promulger::Config; |
14 | |
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15 | has listname => ( |
16 | is => 'ro', |
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17 | isa => sub { $_[0] =~ /^\w+$/ or die "listname must be a string" }, |
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18 | required => 1, |
19 | ); |
20 | |
21 | has active => ( |
22 | is => 'rw', |
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23 | isa => sub { ($_[0] == 0 || $_[0] == 1) or die "active must be 0 or 1" }, |
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24 | required => 1, |
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25 | default => sub { 1 }, |
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26 | ); |
27 | |
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28 | has subscribers => ( |
29 | is => 'rw', |
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30 | isa => sub { ref $_[0] eq 'HASH' or die "subscribers must be a hashref" }, |
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31 | required => 1, |
32 | default => sub { {} }, |
33 | ); |
34 | |
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35 | sub resolve { |
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36 | my ($self, $proto) = @_; |
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37 | $proto =~ s/-request$//; |
38 | my $path = find_path_for($proto); |
39 | my $maybe_list; |
40 | eval { |
41 | $maybe_list = __PACKAGE__->load($path->stringify); |
42 | }; |
43 | return $maybe_list; |
44 | } |
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45 | |
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46 | sub subscribe { |
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47 | my ($self, $new) = @_; |
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48 | return if $self->subscribers->{$new}; |
49 | $self->subscribers->{$new} = 1; |
50 | $self->store(find_path_for($self->listname)->stringify); |
51 | return 1; |
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52 | } |
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53 | |
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54 | sub unsubscribe { |
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55 | my ($self, $ex) = @_; |
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56 | return unless exists $self->subscribers->{$ex}; |
57 | delete $self->subscribers->{$ex}; |
58 | $self->store(find_path_for($self->listname)->stringify); |
59 | return 1; |
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60 | } |
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61 | |
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62 | # XXX implement ACLs and other shinies -- apeiron, 2010-03-13 |
63 | sub accept_posts_from { |
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64 | my ($self, $sender) = @_; |
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65 | return grep { $sender eq $_ } keys %{$self->subscribers}; |
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66 | } |
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67 | |
68 | sub setup { |
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69 | my ($self) = @_; |
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70 | my $config = Promulger::Config->config; |
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71 | my $name = $self->listname; |
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72 | croak "${name} already a known list" if $self->resolve($name); |
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73 | my $path = find_path_for($name); |
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74 | |
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75 | my $tie = tie my @aliases, 'Tie::File', $config->{aliases}; |
76 | $tie->flock; |
77 | my @list_aliases = ($name, "${name}-request"); |
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78 | |
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79 | for my $list_alias (@list_aliases) { |
80 | if(grep { /^${list_alias}:/ } @aliases) { |
81 | croak "${list_alias} already in $config->{aliases}"; |
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82 | } |
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83 | push @aliases, |
84 | qq(${list_alias}: "|$config->{bin_root}/pmg msg -c $config->{config_file}"\n); |
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85 | } |
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86 | |
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87 | $self->store($path->stringify); |
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88 | } |
89 | |
90 | sub delete { |
91 | my ($self) = @_; |
92 | my $config = Promulger::Config->config; |
93 | my $name = $self->listname; |
94 | |
95 | my $tie = tie my @aliases, 'Tie::File', $config->{aliases}; |
96 | $tie->flock; |
97 | |
98 | my @list_aliases = ($name, "${name}-request"); |
99 | @aliases = grep { |
100 | $_ !~ /^$list_aliases[0]:/ && |
101 | $_ !~ /^$list_aliases[1]:/ |
102 | } @aliases; |
103 | |
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104 | unlink find_path_for($self->listname)->stringify; |
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105 | } |
106 | |
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107 | sub find_path_for { |
108 | my ($proto) = @_; |
109 | my $path = file(Promulger::Config->config->{list_home}, $proto . ".list"); |
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110 | return $path; |
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111 | } |
112 | |
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113 | sub store { |
114 | my ($self, $path) = @_; |
115 | my $dumped = 'do { my '. Dumper($self) . '; $VAR1; }'; |
116 | write_file($path, $dumped); |
117 | } |
118 | |
119 | sub load { |
120 | my ($class, $path) = @_; |
121 | return do $path; |
122 | } |
123 | |
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124 | 'http://mitpress.mit.edu/sicp/'; |