… | |
… | |
6 | |
6 | |
7 | use AnyEvent::FCP; |
7 | use AnyEvent::FCP; |
8 | |
8 | |
9 | my $fcp = new AnyEvent::FCP; |
9 | my $fcp = new AnyEvent::FCP; |
10 | |
10 | |
11 | # transactions return condvars |
11 | # transactions return condvars |
12 | my $lp_cv = $fcp->list_peers; |
12 | my $lp_cv = $fcp->list_peers; |
13 | my $pr_cv = $fcp->list_persistent_requests; |
13 | my $pr_cv = $fcp->list_persistent_requests; |
14 | |
14 | |
15 | my $peers = $lp_cv->recv; |
15 | my $peers = $lp_cv->recv; |
16 | my $reqs = $pr_cv->recv; |
16 | my $reqs = $pr_cv->recv; |
… | |
… | |
26 | The module uses L<AnyEvent> to find a suitable event module. |
26 | The module uses L<AnyEvent> to find a suitable event module. |
27 | |
27 | |
28 | Only very little is implemented, ask if you need more, and look at the |
28 | Only very little is implemented, ask if you need more, and look at the |
29 | example program later in this section. |
29 | example program later in this section. |
30 | |
30 | |
|
|
31 | =head2 EXAMPLE |
|
|
32 | |
|
|
33 | This example fetches the download list and sets the priority of all files |
|
|
34 | with "a" in their name to "emergency": |
|
|
35 | |
|
|
36 | use AnyEvent::FCP; |
|
|
37 | |
|
|
38 | my $fcp = new AnyEvent::FCP; |
|
|
39 | |
|
|
40 | $fcp->watch_global (1, 0); |
|
|
41 | my $req = $fcp->list_persistent_requests; |
|
|
42 | |
|
|
43 | TODO |
|
|
44 | for my $req (values %$req) { |
|
|
45 | if ($req->{filename} =~ /a/) { |
|
|
46 | $fcp->modify_persistent_request (1, $req->{identifier}, undef, 0); |
|
|
47 | } |
|
|
48 | } |
|
|
49 | |
31 | =head2 IMPORT TAGS |
50 | =head2 IMPORT TAGS |
32 | |
51 | |
33 | Nothing much can be "imported" from this module right now. |
52 | Nothing much can be "imported" from this module right now. |
34 | |
53 | |
35 | =head2 THE AnyEvent::FCP CLASS |
54 | =head1 THE AnyEvent::FCP CLASS |
36 | |
55 | |
37 | =over 4 |
56 | =over 4 |
38 | |
57 | |
39 | =cut |
58 | =cut |
40 | |
59 | |
… | |
… | |
42 | |
61 | |
43 | use common::sense; |
62 | use common::sense; |
44 | |
63 | |
45 | use Carp; |
64 | use Carp; |
46 | |
65 | |
47 | our $VERSION = '0.2'; |
66 | our $VERSION = 0.5; |
48 | |
67 | |
49 | use Scalar::Util (); |
68 | use Scalar::Util (); |
50 | |
69 | |
51 | use AnyEvent; |
70 | use AnyEvent; |
52 | use AnyEvent::Handle; |
71 | use AnyEvent::Handle; |
|
|
72 | use AnyEvent::Util (); |
|
|
73 | |
|
|
74 | our %TOLC; # tolc cache |
53 | |
75 | |
54 | sub touc($) { |
76 | sub touc($) { |
55 | local $_ = shift; |
77 | local $_ = shift; |
56 | 1 while s/((?:^|_)(?:svk|chk|uri|fcp)(?:_|$))/\U$1/; |
78 | 1 while s/((?:^|_)(?:svk|chk|uri|fcp|ds|mime|dda)(?:_|$))/\U$1/; |
57 | s/(?:^|_)(.)/\U$1/g; |
79 | s/(?:^|_)(.)/\U$1/g; |
58 | $_ |
80 | $_ |
59 | } |
81 | } |
60 | |
82 | |
61 | sub tolc($) { |
83 | sub tolc($) { |
62 | local $_ = shift; |
84 | local $_ = shift; |
63 | 1 while s/(SVK|CHK|URI|FCP)([^_])/$1\_$2/i; |
85 | 1 while s/(SVK|CHK|URI|FCP|DS|MIME|DDA)([^_])/$1\_$2/; |
64 | 1 while s/([^_])(SVK|CHK|URI|FCP)/$1\_$2/i; |
86 | 1 while s/([^_])(SVK|CHK|URI|FCP|DS|MIME|DDA)/$1\_$2/; |
65 | s/(?<=[a-z])(?=[A-Z])/_/g; |
87 | s/(?<=[a-z])(?=[A-Z])/_/g; |
66 | lc |
88 | lc |
67 | } |
89 | } |
68 | |
90 | |
69 | =item $fcp = new AnyEvent::FCP [host => $host][, port => $port][, progress => \&cb][, name => $name] |
91 | =item $fcp = new AnyEvent::FCP key => value...; |
70 | |
92 | |
71 | Create a new FCP connection to the given host and port (default |
93 | Create a new FCP connection to the given host and port (default |
72 | 127.0.0.1:9481, or the environment variables C<FREDHOST> and C<FREDPORT>). |
94 | 127.0.0.1:9481, or the environment variables C<FREDHOST> and C<FREDPORT>). |
73 | |
95 | |
74 | If no C<name> was specified, then AnyEvent::FCP will generate a |
96 | If no C<name> was specified, then AnyEvent::FCP will generate a |
75 | (hopefully) unique client name for you. |
97 | (hopefully) unique client name for you. |
76 | |
98 | |
77 | =cut |
99 | The following keys can be specified (they are all optional): |
78 | |
100 | |
79 | #TODO |
101 | =over 4 |
80 | #You can install a progress callback that is being called with the AnyEvent::FCP |
102 | |
81 | #object, a txn object, the type of the transaction and the attributes. Use |
103 | =item name => $string |
82 | #it like this: |
104 | |
83 | # |
105 | A unique name to identify this client. If none is specified, a randomly |
84 | # sub progress_cb { |
106 | generated name will be used. |
85 | # my ($self, $txn, $type, $attr) = @_; |
107 | |
86 | # |
108 | =item host => $hostname |
87 | # warn "progress<$txn,$type," . (join ":", %$attr) . ">\n"; |
109 | |
88 | # } |
110 | The hostname or IP address of the freenet node. Default is C<$ENV{FREDHOST}> |
|
|
111 | or C<127.0.0.1>. |
|
|
112 | |
|
|
113 | =item port => $portnumber |
|
|
114 | |
|
|
115 | The port number of the FCP port. Default is C<$ENV{FREDPORT}> or C<9481>. |
|
|
116 | |
|
|
117 | =item timeout => $seconds |
|
|
118 | |
|
|
119 | The timeout, in seconds, after which a connection error is assumed when |
|
|
120 | there is no activity. Default is C<7200>, i.e. two hours. |
|
|
121 | |
|
|
122 | =item keepalive => $seconds |
|
|
123 | |
|
|
124 | The interval, in seconds, at which keepalive messages will be |
|
|
125 | sent. Default is C<540>, i.e. nine minutes. |
|
|
126 | |
|
|
127 | These keepalive messages are useful both to detect that a connection is |
|
|
128 | no longer working and to keep any (home) routers from expiring their |
|
|
129 | masquerading entry. |
|
|
130 | |
|
|
131 | =item on_eof => $callback->($fcp) |
|
|
132 | |
|
|
133 | Invoked when the underlying L<AnyEvent::Handle> signals EOF, currently |
|
|
134 | regardless of whether the EOF was expected or not. |
|
|
135 | |
|
|
136 | =item on_error => $callback->($fcp, $message) |
|
|
137 | |
|
|
138 | Invoked on any (fatal) errors, such as unexpected connection close. The |
|
|
139 | callback receives the FCP object and a textual error message. |
|
|
140 | |
|
|
141 | =item on_failure => $callback->($fcp, $type, $args, $backtrace, $error) |
|
|
142 | |
|
|
143 | Invoked when an FCP request fails that didn't have a failure callback. See |
|
|
144 | L<FCP REQUESTS> for details. |
|
|
145 | |
|
|
146 | =back |
|
|
147 | |
|
|
148 | =cut |
89 | |
149 | |
90 | sub new { |
150 | sub new { |
91 | my $class = shift; |
151 | my $class = shift; |
|
|
152 | |
|
|
153 | my $rand = join "", map chr 0x21 + rand 94, 1..40; # ~ 262 bits entropy |
|
|
154 | |
92 | my $self = bless { @_ }, $class; |
155 | my $self = bless { |
93 | |
156 | host => $ENV{FREDHOST} || "127.0.0.1", |
94 | $self->{host} ||= $ENV{FREDHOST} || "127.0.0.1"; |
157 | port => $ENV{FREDPORT} || 9481, |
95 | $self->{port} ||= $ENV{FREDPORT} || 9481; |
158 | timeout => 3600 * 2, |
96 | $self->{name} ||= time.rand.rand.rand; # lame |
159 | keepalive => 9 * 60, |
97 | $self->{timeout} ||= 600; |
160 | name => time.rand.rand.rand, # lame |
98 | |
161 | @_, |
99 | $self->{id} = "a0"; |
162 | queue => [], |
|
|
163 | req => {}, |
|
|
164 | prefix => "..:aefcpid:$rand:", |
|
|
165 | idseq => "a0", |
|
|
166 | }, $class; |
100 | |
167 | |
101 | { |
168 | { |
102 | Scalar::Util::weaken (my $self = $self); |
169 | Scalar::Util::weaken (my $self = $self); |
|
|
170 | |
|
|
171 | $self->{kw} = AE::timer $self->{keepalive}, $self->{keepalive}, sub { |
|
|
172 | $self->{hdl}->push_write ("\n"); |
|
|
173 | }; |
|
|
174 | |
|
|
175 | our $ENDMESSAGE = qr<\012(EndMessage|Data)\012>; |
|
|
176 | |
|
|
177 | # these are declared here for performance reasons |
|
|
178 | my ($k, $v, $type); |
|
|
179 | my $rdata; |
|
|
180 | |
|
|
181 | my $on_read = sub { |
|
|
182 | my ($hdl) = @_; |
|
|
183 | |
|
|
184 | # we only carve out whole messages here |
|
|
185 | while ($hdl->{rbuf} =~ /\012(EndMessage|Data)\012/) { |
|
|
186 | # remember end marker |
|
|
187 | $rdata = $1 eq "Data" |
|
|
188 | or $1 eq "EndMessage" |
|
|
189 | or return $self->fatal ("protocol error, expected message end, got $1\n"); |
|
|
190 | |
|
|
191 | my @lines = split /\012/, substr $hdl->{rbuf}, 0, $-[0]; |
|
|
192 | |
|
|
193 | substr $hdl->{rbuf}, 0, $+[0], ""; # remove pkg |
|
|
194 | |
|
|
195 | $type = shift @lines; |
|
|
196 | $type = ($TOLC{$type} ||= tolc $type); |
|
|
197 | |
|
|
198 | my %kv; |
|
|
199 | |
|
|
200 | for (@lines) { |
|
|
201 | ($k, $v) = split /=/, $_, 2; |
|
|
202 | $k = ($TOLC{$k} ||= tolc $k); |
|
|
203 | |
|
|
204 | if ($k =~ /\./) { |
|
|
205 | # generic, slow case |
|
|
206 | my @k = split /\./, $k; |
|
|
207 | my $ro = \\%kv; |
|
|
208 | |
|
|
209 | while (@k) { |
|
|
210 | $k = shift @k; |
|
|
211 | if ($k =~ /^\d+$/) { |
|
|
212 | $ro = \$$ro->[$k]; |
|
|
213 | } else { |
|
|
214 | $ro = \$$ro->{$k}; |
|
|
215 | } |
|
|
216 | } |
|
|
217 | |
|
|
218 | $$ro = $v; |
|
|
219 | |
|
|
220 | next; |
|
|
221 | } |
|
|
222 | |
|
|
223 | # special comon case, for performance only |
|
|
224 | $kv{$k} = $v; |
|
|
225 | } |
|
|
226 | |
|
|
227 | if ($rdata) { |
|
|
228 | $_[0]->push_read (chunk => delete $kv{data_length}, sub { |
|
|
229 | $rdata = \$_[1]; |
|
|
230 | $self->recv ($type, \%kv, $rdata); |
|
|
231 | }); |
|
|
232 | |
|
|
233 | last; # do not tgry to parse more messages |
|
|
234 | } else { |
|
|
235 | $self->recv ($type, \%kv); |
|
|
236 | } |
|
|
237 | } |
|
|
238 | }; |
103 | |
239 | |
104 | $self->{hdl} = new AnyEvent::Handle |
240 | $self->{hdl} = new AnyEvent::Handle |
105 | connect => [$self->{host} => $self->{port}], |
241 | connect => [$self->{host} => $self->{port}], |
106 | timeout => $self->{timeout}, |
242 | timeout => $self->{timeout}, |
|
|
243 | on_read => $on_read, |
|
|
244 | on_eof => sub { |
|
|
245 | if ($self->{on_eof}) { |
|
|
246 | $self->{on_eof}($self); |
|
|
247 | } else { |
|
|
248 | $self->fatal ("EOF"); |
|
|
249 | } |
|
|
250 | }, |
107 | on_error => sub { |
251 | on_error => sub { |
108 | warn "<@_>\n"; |
252 | $self->fatal ($_[2]); |
109 | exit 1; |
|
|
110 | }, |
253 | }, |
111 | on_read => sub { $self->on_read (@_) }, |
254 | ; |
112 | on_eof => $self->{on_eof} || sub { }; |
|
|
113 | |
255 | |
114 | Scalar::Util::weaken ($self->{hdl}{fcp} = $self); |
256 | Scalar::Util::weaken ($self->{hdl}{fcp} = $self); |
115 | } |
257 | } |
116 | |
258 | |
117 | $self->send_msg ( |
259 | $self->send_msg (client_hello => |
118 | client_hello => |
|
|
119 | name => $self->{name}, |
260 | name => $self->{name}, |
120 | expected_version => "2.0", |
261 | expected_version => "2.0", |
121 | ); |
262 | ); |
122 | |
263 | |
123 | $self |
264 | $self |
124 | } |
265 | } |
125 | |
266 | |
126 | #sub progress { |
267 | sub fatal { |
127 | # my ($self, $txn, $type, $attr) = @_; |
268 | my ($self, $msg) = @_; |
128 | # |
269 | |
129 | # $self->{progress}->($self, $txn, $type, $attr) |
270 | $self->{hdl}->shutdown; |
130 | # if $self->{progress}; |
271 | delete $self->{kw}; |
131 | #} |
272 | |
|
|
273 | if ($self->{on_error}) { |
|
|
274 | $self->{on_error}->($self, $msg); |
|
|
275 | } else { |
|
|
276 | die $msg; |
|
|
277 | } |
|
|
278 | } |
|
|
279 | |
|
|
280 | sub identifier { |
|
|
281 | $_[0]{prefix} . ++$_[0]{idseq} |
|
|
282 | } |
132 | |
283 | |
133 | sub send_msg { |
284 | sub send_msg { |
134 | my ($self, $type, %kv) = @_; |
285 | my ($self, $type, %kv) = @_; |
135 | |
286 | |
136 | my $data = delete $kv{data}; |
287 | my $data = delete $kv{data}; |
137 | |
288 | |
138 | if (exists $kv{id_cb}) { |
289 | if (exists $kv{id_cb}) { |
139 | my $id = $kv{identifier} || ++$self->{id}; |
290 | my $id = $kv{identifier} ||= $self->identifier; |
140 | $self->{id}{$id} = delete $kv{id_cb}; |
291 | $self->{id}{$id} = delete $kv{id_cb}; |
141 | $kv{identifier} = $id; |
|
|
142 | } |
292 | } |
143 | |
293 | |
144 | my $msg = (touc $type) . "\012" |
294 | my $msg = (touc $type) . "\012" |
145 | . join "", map +(touc $_) . "=$kv{$_}\012", keys %kv; |
295 | . join "", map +(touc $_) . "=$kv{$_}\012", keys %kv; |
146 | |
296 | |
… | |
… | |
158 | } |
308 | } |
159 | |
309 | |
160 | $self->{hdl}->push_write ($msg); |
310 | $self->{hdl}->push_write ($msg); |
161 | } |
311 | } |
162 | |
312 | |
163 | sub on_read { |
313 | sub on { |
164 | my ($self) = @_; |
314 | my ($self, $cb) = @_; |
165 | |
315 | |
166 | my $type; |
316 | # cb return undef - message eaten, remove cb |
167 | my %kv; |
317 | # cb return 0 - message eaten |
168 | my $rdata; |
318 | # cb return 1 - pass to next |
169 | |
319 | |
170 | my $done_cb = sub { |
320 | push @{ $self->{on} }, $cb; |
171 | $kv{pkt_type} = $type; |
321 | } |
172 | |
322 | |
173 | if (my $cb = $self->{queue}[0]) { |
323 | sub _push_queue { |
174 | $cb->($self, $type, \%kv, $rdata) |
324 | my ($self, $queue) = @_; |
175 | and shift @{ $self->{queue} }; |
325 | |
176 | } else { |
326 | shift @$queue; |
177 | $self->default_recv ($type, \%kv, $rdata); |
327 | $queue->[0]($self, AnyEvent::Util::guard { $self->_push_queue ($queue) }) |
|
|
328 | if @$queue; |
|
|
329 | } |
|
|
330 | |
|
|
331 | # lock so only one $type (arbitrary string) is in flight, |
|
|
332 | # to work around horribly misdesigned protocol. |
|
|
333 | sub serialise { |
|
|
334 | my ($self, $type, $cb) = @_; |
|
|
335 | |
|
|
336 | my $queue = $self->{serialise}{$type} ||= []; |
|
|
337 | push @$queue, $cb; |
|
|
338 | $cb->($self, AnyEvent::Util::guard { $self->_push_queue ($queue) }) |
|
|
339 | unless $#$queue; |
|
|
340 | } |
|
|
341 | |
|
|
342 | # how to merge these types into $self->{persistent} |
|
|
343 | our %PERSISTENT_TYPE = ( |
|
|
344 | persistent_get => sub { %{ $_[1] } = (type => "persistent_get" , %{ $_[2] }) }, |
|
|
345 | persistent_put => sub { %{ $_[1] } = (type => "persistent_put" , %{ $_[2] }) }, |
|
|
346 | persistent_put_dir => sub { %{ $_[1] } = (type => "persistent_put_dir", %{ $_[2] }) }, |
|
|
347 | persistent_request_modified => sub { %{ $_[1] } = (%{ $_[1] }, %{ $_[2] }) }, |
|
|
348 | persistent_request_removed => sub { delete $_[0]{req}{$_[2]{identifier}} }, |
|
|
349 | |
|
|
350 | simple_progress => sub { $_[1]{simple_progress} = $_[2] }, # get/put |
|
|
351 | |
|
|
352 | uri_generated => sub { $_[1]{uri_generated} = $_[2] }, # put |
|
|
353 | generated_metadata => sub { $_[1]{generated_metadata} = $_[2] }, # put |
|
|
354 | started_compression => sub { $_[1]{started_compression} = $_[2] }, # put |
|
|
355 | finished_compression => sub { $_[1]{finished_compression} = $_[2] }, # put |
|
|
356 | put_fetchable => sub { $_[1]{put_fetchable} = $_[2] }, # put |
|
|
357 | put_failed => sub { $_[1]{put_failed} = $_[2] }, # put |
|
|
358 | put_successful => sub { $_[1]{put_successful} = $_[2] }, # put |
|
|
359 | |
|
|
360 | sending_to_network => sub { $_[1]{sending_to_network} = $_[2] }, # get |
|
|
361 | compatibility_mode => sub { $_[1]{compatibility_mode} = $_[2] }, # get |
|
|
362 | expected_hashes => sub { $_[1]{expected_hashes} = $_[2] }, # get |
|
|
363 | expected_mime => sub { $_[1]{expected_mime} = $_[2] }, # get |
|
|
364 | expected_data_length => sub { $_[1]{expected_data_length} = $_[2] }, # get |
|
|
365 | get_failed => sub { $_[1]{get_failed} = $_[2] }, # get |
|
|
366 | data_found => sub { $_[1]{data_found} = $_[2] }, # get |
|
|
367 | enter_finite_cooldown => sub { $_[1]{enter_finite_cooldown} = $_[2] }, # get |
|
|
368 | ); |
|
|
369 | |
|
|
370 | sub recv { |
|
|
371 | my ($self, $type, $kv, @extra) = @_; |
|
|
372 | |
|
|
373 | if (my $cb = $PERSISTENT_TYPE{$type}) { |
|
|
374 | my $id = $kv->{identifier}; |
|
|
375 | my $req = $_[0]{req}{$id} ||= {}; |
|
|
376 | $cb->($self, $req, $kv); |
|
|
377 | $self->recv (request_changed => $kv, $type, @extra); |
|
|
378 | } |
|
|
379 | |
|
|
380 | my $on = $self->{on}; |
|
|
381 | for (0 .. $#$on) { |
|
|
382 | unless (my $res = $on->[$_]($self, $type, $kv, @extra)) { |
|
|
383 | splice @$on, $_, 1 unless defined $res; |
|
|
384 | return; |
178 | } |
385 | } |
179 | }; |
386 | } |
180 | |
387 | |
181 | my $hdr_cb; $hdr_cb = sub { |
388 | if (my $cb = $self->{queue}[0]) { |
182 | if ($_[1] =~ /^([^=]+)=(.*)$/) { |
389 | $cb->($self, $type, $kv, @extra) |
183 | my ($k, $v) = ($1, $2); |
390 | and shift @{ $self->{queue} }; |
184 | my @k = split /\./, tolc $k; |
|
|
185 | my $ro = \\%kv; |
|
|
186 | |
|
|
187 | while (@k) { |
|
|
188 | my $k = shift @k; |
|
|
189 | if ($k =~ /^\d+$/) { |
|
|
190 | $ro = \$$ro->[$k]; |
|
|
191 | } else { |
|
|
192 | $ro = \$$ro->{$k}; |
|
|
193 | } |
|
|
194 | } |
|
|
195 | |
|
|
196 | $$ro = $v; |
|
|
197 | |
|
|
198 | $_[0]->push_read (line => $hdr_cb); |
|
|
199 | } elsif ($_[1] eq "Data") { |
|
|
200 | $_[0]->push_read (chunk => delete $kv{data_length}, sub { |
|
|
201 | $rdata = \$_[1]; |
|
|
202 | $done_cb->(); |
|
|
203 | }); |
|
|
204 | } elsif ($_[1] eq "EndMessage") { |
|
|
205 | $done_cb->(); |
|
|
206 | } else { |
391 | } else { |
207 | die "protocol error, expected message end, got $_[1]\n";#d# |
392 | $self->default_recv ($type, $kv, @extra); |
208 | } |
|
|
209 | }; |
393 | } |
210 | |
|
|
211 | $self->{hdl}->push_read (line => sub { |
|
|
212 | $type = tolc $_[1]; |
|
|
213 | $_[0]->push_read (line => $hdr_cb); |
|
|
214 | }); |
|
|
215 | } |
394 | } |
216 | |
395 | |
217 | sub default_recv { |
396 | sub default_recv { |
218 | my ($self, $type, $kv, $rdata) = @_; |
397 | my ($self, $type, $kv, $rdata) = @_; |
219 | |
398 | |
220 | if ($type eq "node_hello") { |
399 | if ($type eq "node_hello") { |
221 | $self->{node_hello} = $kv; |
400 | $self->{node_hello} = $kv; |
222 | } elsif (exists $self->{id}{$kv->{identifier}}) { |
401 | } elsif (exists $self->{id}{$kv->{identifier}}) { |
223 | $self->{id}{$kv->{identifier}}($self, $type, $kv, $rdata) |
402 | $self->{id}{$kv->{identifier}}($self, $type, $kv, $rdata) |
224 | and delete $self->{id}{$kv->{identifier}}; |
403 | and delete $self->{id}{$kv->{identifier}}; |
225 | } else { |
|
|
226 | # on_warn |
|
|
227 | #warn "protocol warning (unexpected $type message)\n"; |
|
|
228 | } |
404 | } |
229 | } |
405 | } |
|
|
406 | |
|
|
407 | =back |
|
|
408 | |
|
|
409 | =head2 FCP REQUESTS |
|
|
410 | |
|
|
411 | The following methods implement various requests. Most of them map |
|
|
412 | directory to the FCP message of the same name. The added benefit of |
|
|
413 | these over sending requests yourself is that they handle the necessary |
|
|
414 | serialisation, protocol quirks, and replies. |
|
|
415 | |
|
|
416 | All of them exist in two versions, the variant shown in this manpage, and |
|
|
417 | a variant with an extra C<_> at the end, and an extra C<$cb> argument. The |
|
|
418 | version as shown is I<synchronous> - it will wait for any replies, and |
|
|
419 | either return the reply, or croak with an error. The underscore variant |
|
|
420 | returns immediately and invokes one or more callbacks or condvars later. |
|
|
421 | |
|
|
422 | For example, the call |
|
|
423 | |
|
|
424 | $info = $fcp->get_plugin_info ($name, $detailed); |
|
|
425 | |
|
|
426 | Also comes in this underscore variant: |
|
|
427 | |
|
|
428 | $fcp->get_plugin_info_ ($name, $detailed, $cb); |
|
|
429 | |
|
|
430 | You can think of the underscore as a kind of continuation indicator - the |
|
|
431 | normal function waits and returns with the data, the C<_> indicates that |
|
|
432 | you pass the continuation yourself, and the continuation will be invoked |
|
|
433 | with the results. |
|
|
434 | |
|
|
435 | This callback/continuation argument (C<$cb>) can come in three forms itself: |
|
|
436 | |
|
|
437 | =over 4 |
|
|
438 | |
|
|
439 | =item A code reference (or rather anything not matching some other alternative) |
|
|
440 | |
|
|
441 | This code reference will be invoked with the result on success. On an |
|
|
442 | error, it will invoke the C<on_failure> callback of the FCP object, or, |
|
|
443 | if none was defined, will die (in the event loop) with a backtrace of the |
|
|
444 | call site. |
|
|
445 | |
|
|
446 | This is a popular choice, but it makes handling errors hard - make sure |
|
|
447 | you never generate protocol errors! |
|
|
448 | |
|
|
449 | In the failure case, if an C<on_failure> hook exists, it will be invoked |
|
|
450 | with the FCP object, the request type (the name of the method, an arrayref |
|
|
451 | containing the arguments from the original request invocation, a (textual) |
|
|
452 | backtrace as generated by C<Carp::longmess>, and the error object from the |
|
|
453 | server, in this order, e.g.: |
|
|
454 | |
|
|
455 | on_failure => sub { |
|
|
456 | my ($fcp, $request_type, $orig_args, $backtrace, $error_object) = @_; |
|
|
457 | |
|
|
458 | warn "FCP failure ($type @$args), $error_object->{code_description} ($error_object->{extra_description})$backtrace"; |
|
|
459 | exit 1; |
|
|
460 | }, |
|
|
461 | |
|
|
462 | =item A condvar (as returned by e.g. C<< AnyEvent->condvar >>) |
|
|
463 | |
|
|
464 | When a condvar is passed, it is sent (C<< $cv->send ($results) >>) the |
|
|
465 | results when the request has finished. Should an error occur, the error |
|
|
466 | will instead result in C<< $cv->croak ($error) >>. |
|
|
467 | |
|
|
468 | This is also a popular choice. |
|
|
469 | |
|
|
470 | =item An array with two callbacks C<[$success, $failure]> |
|
|
471 | |
|
|
472 | The C<$success> callback will be invoked with the results, while the |
|
|
473 | C<$failure> callback will be invoked on any errors. |
|
|
474 | |
|
|
475 | The C<$failure> callback will be invoked with the error object from the |
|
|
476 | server. |
|
|
477 | |
|
|
478 | =item C<undef> |
|
|
479 | |
|
|
480 | This is the same thing as specifying C<sub { }> as callback, i.e. on |
|
|
481 | success, the results are ignored, while on failure, the C<on_failure> hook |
|
|
482 | is invoked or the module dies with a backtrace. |
|
|
483 | |
|
|
484 | This is good for quick scripts, or when you really aren't interested in |
|
|
485 | the results. |
|
|
486 | |
|
|
487 | =back |
|
|
488 | |
|
|
489 | =cut |
|
|
490 | |
|
|
491 | our $NOP_CB = sub { }; |
230 | |
492 | |
231 | sub _txn { |
493 | sub _txn { |
232 | my ($name, $sub) = @_; |
494 | my ($name, $sub) = @_; |
233 | |
495 | |
234 | *{$name} = sub { |
496 | *{$name} = sub { |
235 | splice @_, 1, 0, (my $cv = AnyEvent->condvar); |
497 | my $cv = AE::cv; |
236 | &$sub; |
|
|
237 | $cv |
|
|
238 | }; |
|
|
239 | |
498 | |
240 | *{"$name\_sync"} = sub { |
499 | splice @_, 1, 0, $cv, sub { $cv->croak ($_[0]{extra_description}) }; |
241 | splice @_, 1, 0, (my $cv = AnyEvent->condvar); |
|
|
242 | &$sub; |
500 | &$sub; |
243 | $cv->recv |
501 | $cv->recv |
244 | }; |
502 | }; |
245 | } |
|
|
246 | |
503 | |
247 | =item $cv = $fcp->list_peers ([$with_metdata[, $with_volatile]]) |
504 | *{"$name\_"} = sub { |
|
|
505 | my ($ok, $err) = pop; |
248 | |
506 | |
|
|
507 | if (ARRAY:: eq ref $ok) { |
|
|
508 | ($ok, $err) = @$ok; |
|
|
509 | } elsif (UNIVERSAL::isa $ok, AnyEvent::CondVar::) { |
|
|
510 | $err = sub { $ok->croak ($_[0]{extra_description}) }; |
|
|
511 | } else { |
|
|
512 | my $bt = Carp::longmess "AnyEvent::FCP request $name"; |
|
|
513 | Scalar::Util::weaken (my $self = $_[0]); |
|
|
514 | my $args = [@_]; shift @$args; |
|
|
515 | $err = sub { |
|
|
516 | if ($self->{on_failure}) { |
|
|
517 | $self->{on_failure}($self, $name, $args, $bt, $_[0]); |
|
|
518 | } else { |
|
|
519 | die "$_[0]{code_description} ($_[0]{extra_description})$bt"; |
|
|
520 | } |
|
|
521 | }; |
|
|
522 | } |
|
|
523 | |
|
|
524 | $ok ||= $NOP_CB; |
|
|
525 | |
|
|
526 | splice @_, 1, 0, $ok, $err; |
|
|
527 | &$sub; |
|
|
528 | }; |
|
|
529 | } |
|
|
530 | |
|
|
531 | =over 4 |
|
|
532 | |
249 | =item $peers = $fcp->list_peers_sync ([$with_metdata[, $with_volatile]]) |
533 | =item $peers = $fcp->list_peers ([$with_metdata[, $with_volatile]]) |
250 | |
534 | |
251 | =cut |
535 | =cut |
252 | |
536 | |
253 | _txn list_peers => sub { |
537 | _txn list_peers => sub { |
254 | my ($self, $cv, $with_metadata, $with_volatile) = @_; |
538 | my ($self, $ok, undef, $with_metadata, $with_volatile) = @_; |
255 | |
539 | |
256 | my @res; |
540 | my @res; |
257 | |
541 | |
258 | $self->send_msg (list_peers => |
542 | $self->send_msg (list_peers => |
259 | with_metadata => $with_metadata ? "true" : "false", |
543 | with_metadata => $with_metadata ? "true" : "false", |
260 | with_volatile => $with_volatile ? "true" : "false", |
544 | with_volatile => $with_volatile ? "true" : "false", |
261 | id_cb => sub { |
545 | id_cb => sub { |
262 | my ($self, $type, $kv, $rdata) = @_; |
546 | my ($self, $type, $kv, $rdata) = @_; |
263 | |
547 | |
264 | if ($type eq "end_list_peers") { |
548 | if ($type eq "end_list_peers") { |
265 | $cv->(\@res); |
549 | $ok->(\@res); |
266 | 1 |
550 | 1 |
267 | } else { |
551 | } else { |
268 | push @res, $kv; |
552 | push @res, $kv; |
269 | 0 |
553 | 0 |
270 | } |
554 | } |
271 | }, |
555 | }, |
272 | ); |
556 | ); |
273 | }; |
557 | }; |
274 | |
558 | |
275 | =item $cv = $fcp->list_peer_notes ($node_identifier) |
|
|
276 | |
|
|
277 | =item $notes = $fcp->list_peer_notes_sync ($node_identifier) |
559 | =item $notes = $fcp->list_peer_notes ($node_identifier) |
278 | |
560 | |
279 | =cut |
561 | =cut |
280 | |
562 | |
281 | _txn list_peer_notes => sub { |
563 | _txn list_peer_notes => sub { |
282 | my ($self, $cv, $node_identifier) = @_; |
564 | my ($self, $ok, undef, $node_identifier) = @_; |
283 | |
565 | |
284 | $self->send_msg (list_peer_notes => |
566 | $self->send_msg (list_peer_notes => |
285 | node_identifier => $node_identifier, |
567 | node_identifier => $node_identifier, |
286 | id_cb => sub { |
568 | id_cb => sub { |
287 | my ($self, $type, $kv, $rdata) = @_; |
569 | my ($self, $type, $kv, $rdata) = @_; |
288 | |
570 | |
289 | $cv->($kv); |
571 | $ok->($kv); |
290 | 1 |
572 | 1 |
291 | }, |
573 | }, |
292 | ); |
574 | ); |
293 | }; |
575 | }; |
294 | |
576 | |
295 | =item $cv = $fcp->watch_global ($enabled[, $verbosity_mask]) |
|
|
296 | |
|
|
297 | =item $fcp->watch_global_sync ($enabled[, $verbosity_mask]) |
577 | =item $fcp->watch_global ($enabled[, $verbosity_mask]) |
298 | |
578 | |
299 | =cut |
579 | =cut |
300 | |
580 | |
301 | _txn watch_global => sub { |
581 | _txn watch_global => sub { |
302 | my ($self, $cv, $enabled, $verbosity_mask) = @_; |
582 | my ($self, $ok, $err, $enabled, $verbosity_mask) = @_; |
303 | |
583 | |
304 | $self->send_msg (watch_global => |
584 | $self->send_msg (watch_global => |
305 | enabled => $enabled ? "true" : "false", |
585 | enabled => $enabled ? "true" : "false", |
306 | defined $verbosity_mask ? (verbosity_mask => $verbosity_mask+0) : (), |
586 | defined $verbosity_mask ? (verbosity_mask => $verbosity_mask+0) : (), |
307 | ); |
587 | ); |
308 | |
588 | |
309 | $cv->(); |
589 | $ok->(); |
310 | }; |
590 | }; |
311 | |
591 | |
312 | =item $cv = $fcp->list_persistent_requests |
|
|
313 | |
|
|
314 | =item $reqs = $fcp->list_persistent_requests_sync |
592 | =item $reqs = $fcp->list_persistent_requests |
315 | |
593 | |
316 | =cut |
594 | =cut |
317 | |
595 | |
318 | _txn list_persistent_requests => sub { |
596 | _txn list_persistent_requests => sub { |
319 | my ($self, $cv) = @_; |
597 | my ($self, $ok, $err) = @_; |
320 | |
598 | |
|
|
599 | $self->serialise (list_persistent_requests => sub { |
|
|
600 | my ($self, $guard) = @_; |
|
|
601 | |
321 | my %res; |
602 | my @res; |
322 | |
603 | |
323 | $self->send_msg ("list_persistent_requests"); |
604 | $self->send_msg ("list_persistent_requests"); |
324 | |
605 | |
325 | push @{ $self->{queue} }, sub { |
606 | $self->on (sub { |
326 | my ($self, $type, $kv, $rdata) = @_; |
607 | my ($self, $type, $kv, $rdata) = @_; |
327 | |
608 | |
|
|
609 | $guard if 0; |
|
|
610 | |
328 | if ($type eq "end_list_persistent_requests") { |
611 | if ($type eq "end_list_persistent_requests") { |
329 | $cv->(\%res); |
612 | $ok->(\@res); |
|
|
613 | return; |
|
|
614 | } else { |
|
|
615 | my $id = $kv->{identifier}; |
|
|
616 | |
|
|
617 | if ($type =~ /^persistent_(get|put|put_dir)$/) { |
|
|
618 | push @res, [$type, $kv]; |
|
|
619 | } |
|
|
620 | } |
|
|
621 | |
330 | 1 |
622 | 1 |
331 | } else { |
623 | }); |
332 | my $id = $kv->{identifier}; |
624 | }); |
|
|
625 | }; |
333 | |
626 | |
334 | if ($type =~ /^persistent_(get|put|put_dir)$/) { |
627 | =item $sync = $fcp->modify_persistent_request ($global, $identifier[, $client_token[, $priority_class]]) |
335 | $res{$id} = { |
628 | |
336 | type => $1, |
629 | Update either the C<client_token> or C<priority_class> of a request |
337 | %{ $res{$id} }, |
630 | identified by C<$global> and C<$identifier>, depending on which of |
|
|
631 | C<$client_token> and C<$priority_class> are not C<undef>. |
|
|
632 | |
|
|
633 | =cut |
|
|
634 | |
|
|
635 | _txn modify_persistent_request => sub { |
|
|
636 | my ($self, $ok, $err, $global, $identifier, $client_token, $priority_class) = @_; |
|
|
637 | |
|
|
638 | $self->serialise ($identifier => sub { |
|
|
639 | my ($self, $guard) = @_; |
|
|
640 | |
|
|
641 | $self->send_msg (modify_persistent_request => |
|
|
642 | global => $global ? "true" : "false", |
|
|
643 | identifier => $identifier, |
|
|
644 | defined $client_token ? (client_token => $client_token ) : (), |
|
|
645 | defined $priority_class ? (priority_class => $priority_class) : (), |
|
|
646 | ); |
|
|
647 | |
|
|
648 | $self->on (sub { |
|
|
649 | my ($self, $type, $kv, @extra) = @_; |
|
|
650 | |
|
|
651 | $guard if 0; |
|
|
652 | |
|
|
653 | if ($kv->{identifier} eq $identifier) { |
|
|
654 | if ($type eq "persistent_request_modified") { |
338 | %$kv, |
655 | $ok->($kv); |
|
|
656 | return; |
|
|
657 | } elsif ($type eq "protocol_error") { |
|
|
658 | $err->($kv); |
|
|
659 | return; |
339 | }; |
660 | } |
340 | } elsif ($type eq "simple_progress") { |
|
|
341 | delete $kv->{pkt_type}; # save memory |
|
|
342 | push @{ $res{delete $kv->{identifier}}{simple_progress} }, $kv; |
|
|
343 | } else { |
|
|
344 | $res{delete $kv->{identifier}}{delete $kv->{pkt_type}} = $kv; |
|
|
345 | } |
661 | } |
|
|
662 | |
346 | 0 |
663 | 1 |
347 | } |
664 | }); |
348 | }; |
665 | }); |
349 | }; |
666 | }; |
350 | |
667 | |
351 | =item $cv = $fcp->remove_request ($global, $identifier) |
|
|
352 | |
|
|
353 | =item $status = $fcp->remove_request_sync ($global, $identifier) |
|
|
354 | |
|
|
355 | =cut |
|
|
356 | |
|
|
357 | _txn remove_request => sub { |
|
|
358 | my ($self, $cv, $global, $identifier) = @_; |
|
|
359 | |
|
|
360 | $self->send_msg (remove_request => |
|
|
361 | global => $global ? "true" : "false", |
|
|
362 | identifier => $identifier, |
|
|
363 | id_cb => sub { |
|
|
364 | my ($self, $type, $kv, $rdata) = @_; |
|
|
365 | |
|
|
366 | $cv->($kv); |
|
|
367 | 1 |
|
|
368 | }, |
|
|
369 | ); |
|
|
370 | |
|
|
371 | $cv->(); |
|
|
372 | }; |
|
|
373 | |
|
|
374 | =item $cv = $fcp->modify_persistent_request ($global, $identifier[, $client_token[, $priority_class]]) |
|
|
375 | |
|
|
376 | =item $status = $fcp->modify_persistent_request_sync ($global, $identifier[, $client_token[, $priority_class]]) |
|
|
377 | |
|
|
378 | =cut |
|
|
379 | |
|
|
380 | _txn modify_persistent_request => sub { |
|
|
381 | my ($self, $cv, $global, $identifier, $client_token, $priority_class) = @_; |
|
|
382 | |
|
|
383 | $self->send_msg (modify_persistent_request => |
|
|
384 | global => $global ? "true" : "false", |
|
|
385 | identifier => $identifier, |
|
|
386 | defined $client_token ? (client_token => $client_token ) : (), |
|
|
387 | defined $priority_class ? (priority_class => $priority_class) : (), |
|
|
388 | id_cb => sub { |
|
|
389 | my ($self, $type, $kv, $rdata) = @_; |
|
|
390 | |
|
|
391 | $cv->($kv); |
|
|
392 | 1 |
|
|
393 | }, |
|
|
394 | ); |
|
|
395 | |
|
|
396 | $cv->(); |
|
|
397 | }; |
|
|
398 | |
|
|
399 | =item $cv = $fcp->get_plugin_info ($name, $detailed) |
|
|
400 | |
|
|
401 | =item $info = $fcp->get_plugin_info_sync ($name, $detailed) |
668 | =item $info = $fcp->get_plugin_info ($name, $detailed) |
402 | |
669 | |
403 | =cut |
670 | =cut |
404 | |
671 | |
405 | _txn get_plugin_info => sub { |
672 | _txn get_plugin_info => sub { |
406 | my ($self, $cv, $name, $detailed) = @_; |
673 | my ($self, $ok, $err, $name, $detailed) = @_; |
|
|
674 | |
|
|
675 | my $id = $self->identifier; |
407 | |
676 | |
408 | $self->send_msg (get_plugin_info => |
677 | $self->send_msg (get_plugin_info => |
|
|
678 | identifier => $id, |
409 | plugin_name => $name, |
679 | plugin_name => $name, |
410 | detailed => $detailed ? "true" : "false", |
680 | detailed => $detailed ? "true" : "false", |
411 | id_cb => sub { |
681 | ); |
|
|
682 | $self->on (sub { |
|
|
683 | my ($self, $type, $kv) = @_; |
|
|
684 | |
|
|
685 | if ($kv->{identifier} eq $id) { |
|
|
686 | if ($type eq "get_plugin_info") { |
|
|
687 | $ok->($kv); |
|
|
688 | } else { |
|
|
689 | $err->($kv, $type); |
|
|
690 | } |
|
|
691 | return; |
|
|
692 | } |
|
|
693 | |
|
|
694 | 1 |
|
|
695 | }); |
|
|
696 | }; |
|
|
697 | |
|
|
698 | =item $status = $fcp->client_get ($uri, $identifier, %kv) |
|
|
699 | |
|
|
700 | %kv can contain (L<http://wiki.freenetproject.org/FCP2p0ClientGet>). |
|
|
701 | |
|
|
702 | ignore_ds, ds_only, verbosity, max_size, max_temp_size, max_retries, |
|
|
703 | priority_class, persistence, client_token, global, return_type, |
|
|
704 | binary_blob, allowed_mime_types, filename, temp_filename |
|
|
705 | |
|
|
706 | =cut |
|
|
707 | |
|
|
708 | _txn client_get => sub { |
|
|
709 | my ($self, $ok, $err, $uri, $identifier, %kv) = @_; |
|
|
710 | |
|
|
711 | $self->serialise ($identifier => sub { |
|
|
712 | my ($self, $guard) = @_; |
|
|
713 | |
|
|
714 | $self->send_msg (client_get => |
|
|
715 | %kv, |
|
|
716 | uri => $uri, |
|
|
717 | identifier => $identifier, |
|
|
718 | ); |
|
|
719 | |
|
|
720 | $self->on (sub { |
412 | my ($self, $type, $kv, $rdata) = @_; |
721 | my ($self, $type, $kv, @extra) = @_; |
413 | |
722 | |
|
|
723 | $guard if 0; |
|
|
724 | |
|
|
725 | if ($kv->{identifier} eq $identifier) { |
|
|
726 | if ($type eq "persistent_get") { |
414 | $cv->($kv); |
727 | $ok->($kv); |
|
|
728 | return; |
|
|
729 | } elsif ($type eq "protocol_error") { |
|
|
730 | $err->($kv); |
|
|
731 | return; |
|
|
732 | } |
|
|
733 | } |
|
|
734 | |
415 | 1 |
735 | 1 |
|
|
736 | }); |
|
|
737 | }); |
|
|
738 | }; |
|
|
739 | |
|
|
740 | =item $status = $fcp->remove_request ($identifier[, $global]) |
|
|
741 | |
|
|
742 | Remove the request with the given identifier. Returns true if successful, |
|
|
743 | false on error. |
|
|
744 | |
|
|
745 | =cut |
|
|
746 | |
|
|
747 | _txn remove_request => sub { |
|
|
748 | my ($self, $ok, $err, $identifier, $global) = @_; |
|
|
749 | |
|
|
750 | $self->serialise ($identifier => sub { |
|
|
751 | my ($self, $guard) = @_; |
|
|
752 | |
|
|
753 | $self->send_msg (remove_request => |
|
|
754 | identifier => $identifier, |
|
|
755 | global => $global ? "true" : "false", |
|
|
756 | ); |
|
|
757 | $self->on (sub { |
|
|
758 | my ($self, $type, $kv, @extra) = @_; |
|
|
759 | |
|
|
760 | $guard if 0; |
|
|
761 | |
|
|
762 | if ($kv->{identifier} eq $identifier) { |
|
|
763 | if ($type eq "persistent_request_removed") { |
|
|
764 | $ok->(1); |
|
|
765 | return; |
|
|
766 | } elsif ($type eq "protocol_error") { |
|
|
767 | $err->($kv); |
|
|
768 | return; |
|
|
769 | } |
|
|
770 | } |
|
|
771 | |
|
|
772 | 1 |
|
|
773 | }); |
|
|
774 | }); |
|
|
775 | }; |
|
|
776 | |
|
|
777 | =item ($can_read, $can_write) = $fcp->test_dda ($local_directory, $remote_directory, $want_read, $want_write)) |
|
|
778 | |
|
|
779 | The DDA test in FCP is probably the single most broken protocol - only |
|
|
780 | one directory test can be outstanding at any time, and some guessing and |
|
|
781 | heuristics are involved in mangling the paths. |
|
|
782 | |
|
|
783 | This function combines C<TestDDARequest> and C<TestDDAResponse> in one |
|
|
784 | request, handling file reading and writing as well, and tries very hard to |
|
|
785 | do the right thing. |
|
|
786 | |
|
|
787 | Both C<$local_directory> and C<$remote_directory> must specify the same |
|
|
788 | directory - C<$local_directory> is the directory path on the client (where |
|
|
789 | L<AnyEvent::FCP> runs) and C<$remote_directory> is the directory path on |
|
|
790 | the server (where the freenet node runs). When both are running on the |
|
|
791 | same node, the paths are generally identical. |
|
|
792 | |
|
|
793 | C<$want_read> and C<$want_write> should be set to a true value when you |
|
|
794 | want to read (get) files or write (put) files, respectively. |
|
|
795 | |
|
|
796 | On error, an exception is thrown. Otherwise, C<$can_read> and |
|
|
797 | C<$can_write> indicate whether you can read or write to freenet via the |
|
|
798 | directory. |
|
|
799 | |
|
|
800 | =cut |
|
|
801 | |
|
|
802 | _txn test_dda => sub { |
|
|
803 | my ($self, $ok, $err, $local, $remote, $want_read, $want_write) = @_; |
|
|
804 | |
|
|
805 | $self->serialise (test_dda => sub { |
|
|
806 | my ($self, $guard) = @_; |
|
|
807 | |
|
|
808 | $self->send_msg (test_dda_request => |
|
|
809 | directory => $remote, |
|
|
810 | want_read_directory => $want_read ? "true" : "false", |
|
|
811 | want_write_directory => $want_write ? "true" : "false", |
|
|
812 | ); |
|
|
813 | $self->on (sub { |
|
|
814 | my ($self, $type, $kv) = @_; |
|
|
815 | |
|
|
816 | if ($type eq "test_dda_reply") { |
|
|
817 | # the filenames are all relative to the server-side directory, |
|
|
818 | # which might or might not match $remote anymore, so we |
|
|
819 | # need to rewrite the paths to be relative to $local |
|
|
820 | for my $k (qw(read_filename write_filename)) { |
|
|
821 | my $f = $kv->{$k}; |
|
|
822 | for my $dir ($kv->{directory}, $remote) { |
|
|
823 | if ($dir eq substr $f, 0, length $dir) { |
|
|
824 | substr $f, 0, 1 + length $dir, ""; |
|
|
825 | $kv->{$k} = $f; |
|
|
826 | last; |
|
|
827 | } |
|
|
828 | } |
|
|
829 | } |
|
|
830 | |
|
|
831 | my %response = (directory => $remote); |
|
|
832 | |
|
|
833 | if (length $kv->{read_filename}) { |
|
|
834 | if (open my $fh, "<:raw", "$local/$kv->{read_filename}") { |
|
|
835 | sysread $fh, my $buf, -s $fh; |
|
|
836 | $response{read_content} = $buf; |
|
|
837 | } |
|
|
838 | } |
|
|
839 | |
|
|
840 | if (length $kv->{write_filename}) { |
|
|
841 | if (open my $fh, ">:raw", "$local/$kv->{write_filename}") { |
|
|
842 | syswrite $fh, $kv->{content_to_write}; |
|
|
843 | } |
|
|
844 | } |
|
|
845 | |
|
|
846 | $self->send_msg (test_dda_response => %response); |
|
|
847 | |
|
|
848 | $self->on (sub { |
|
|
849 | my ($self, $type, $kv) = @_; |
|
|
850 | |
|
|
851 | $guard if 0; # reference |
|
|
852 | |
|
|
853 | if ($type eq "test_dda_complete") { |
|
|
854 | $ok->( |
|
|
855 | $kv->{read_directory_allowed} eq "true", |
|
|
856 | $kv->{write_directory_allowed} eq "true", |
|
|
857 | ); |
|
|
858 | } elsif ($type eq "protocol_error" && $kv->{identifier} eq $remote) { |
|
|
859 | $err->($kv->{extra_description}); |
|
|
860 | return; |
|
|
861 | } |
|
|
862 | |
|
|
863 | 1 |
|
|
864 | }); |
|
|
865 | |
|
|
866 | return; |
|
|
867 | } elsif ($type eq "protocol_error" && $kv->{identifier} eq $remote) { |
|
|
868 | $err->($kv); |
|
|
869 | return; |
|
|
870 | } |
|
|
871 | |
|
|
872 | 1 |
|
|
873 | }); |
|
|
874 | }); |
|
|
875 | }; |
|
|
876 | |
|
|
877 | =back |
|
|
878 | |
|
|
879 | =head2 REQUEST CACHE |
|
|
880 | |
|
|
881 | The C<AnyEvent::FCP> class keeps a request cache, where it caches all |
|
|
882 | information from requests. |
|
|
883 | |
|
|
884 | For these messages, it will store a copy of the key-value pairs, together with a C<type> slot, |
|
|
885 | in C<< $fcp->{req}{$identifier} >>: |
|
|
886 | |
|
|
887 | persistent_get |
|
|
888 | persistent_put |
|
|
889 | persistent_put_dir |
|
|
890 | |
|
|
891 | This message updates the stored data: |
|
|
892 | |
|
|
893 | persistent_request_modified |
|
|
894 | |
|
|
895 | This message will remove this entry: |
|
|
896 | |
|
|
897 | persistent_request_removed |
|
|
898 | |
|
|
899 | These messages get merged into the cache entry, under their |
|
|
900 | type, i.e. a C<simple_progress> message will be stored in C<< |
|
|
901 | $fcp->{req}{$identifier}{simple_progress} >>: |
|
|
902 | |
|
|
903 | simple_progress # get/put |
|
|
904 | |
|
|
905 | uri_generated # put |
|
|
906 | generated_metadata # put |
|
|
907 | started_compression # put |
|
|
908 | finished_compression # put |
|
|
909 | put_failed # put |
|
|
910 | put_fetchable # put |
|
|
911 | put_successful # put |
|
|
912 | |
|
|
913 | sending_to_network # get |
|
|
914 | compatibility_mode # get |
|
|
915 | expected_hashes # get |
|
|
916 | expected_mime # get |
|
|
917 | expected_data_length # get |
|
|
918 | get_failed # get |
|
|
919 | data_found # get |
|
|
920 | enter_finite_cooldown # get |
|
|
921 | |
|
|
922 | In addition, an event (basically a fake message) of type C<request_changed> is generated |
|
|
923 | on every change, which will be called as C<< $cb->($fcp, $kv, $type) >>, where C<$type> |
|
|
924 | is the type of the original message triggering the change, |
|
|
925 | |
|
|
926 | To fill this cache with the global queue and keep it updated, |
|
|
927 | call C<watch_global> to subscribe to updates, followed by |
|
|
928 | C<list_persistent_requests>. |
|
|
929 | |
|
|
930 | $fcp->watch_global_; # do not wait |
|
|
931 | $fcp->list_persistent_requests; # wait |
|
|
932 | |
|
|
933 | To get a better idea of what is stored in the cache, here is an example of |
|
|
934 | what might be stored in C<< $fcp->{req}{"Frost-gpl.txt"} >>: |
|
|
935 | |
|
|
936 | { |
|
|
937 | identifier => "Frost-gpl.txt", |
|
|
938 | uri => 'CHK@Fnx5kzdrfE,EImdzaVyEWl,AAIC--8/gpl.txt', |
|
|
939 | binary_blob => "false", |
|
|
940 | global => "true", |
|
|
941 | max_retries => -1, |
|
|
942 | max_size => 9223372036854775807, |
|
|
943 | persistence => "forever", |
|
|
944 | priority_class => 3, |
|
|
945 | real_time => "false", |
|
|
946 | return_type => "direct", |
|
|
947 | started => "true", |
|
|
948 | type => "persistent_get", |
|
|
949 | verbosity => 2147483647, |
|
|
950 | sending_to_network => { |
|
|
951 | identifier => "Frost-gpl.txt", |
|
|
952 | global => "true", |
416 | }, |
953 | }, |
417 | ); |
954 | compatibility_mode => { |
418 | |
955 | identifier => "Frost-gpl.txt", |
419 | $cv->(); |
956 | definitive => "true", |
420 | }; |
957 | dont_compress => "false", |
421 | |
958 | global => "true", |
422 | =back |
959 | max => "COMPAT_1255", |
|
|
960 | min => "COMPAT_1255", |
|
|
961 | }, |
|
|
962 | expected_hashes => { |
|
|
963 | identifier => "Frost-gpl.txt", |
|
|
964 | global => "true", |
|
|
965 | hashes => { |
|
|
966 | ed2k => "d83596f5ee3b7...", |
|
|
967 | md5 => "e0894e4a2a6...", |
|
|
968 | sha1 => "...", |
|
|
969 | sha256 => "...", |
|
|
970 | sha512 => "...", |
|
|
971 | tth => "...", |
|
|
972 | }, |
|
|
973 | }, |
|
|
974 | expected_mime => { |
|
|
975 | identifier => "Frost-gpl.txt", |
|
|
976 | global => "true", |
|
|
977 | metadata => { content_type => "application/rar" }, |
|
|
978 | }, |
|
|
979 | expected_data_length => { |
|
|
980 | identifier => "Frost-gpl.txt", |
|
|
981 | data_length => 37576, |
|
|
982 | global => "true", |
|
|
983 | }, |
|
|
984 | simple_progress => { |
|
|
985 | identifier => "Frost-gpl.txt", |
|
|
986 | failed => 0, |
|
|
987 | fatally_failed => 0, |
|
|
988 | finalized_total => "true", |
|
|
989 | global => "true", |
|
|
990 | last_progress => 1438639282628, |
|
|
991 | required => 372, |
|
|
992 | succeeded => 102, |
|
|
993 | total => 747, |
|
|
994 | }, |
|
|
995 | data_found => { |
|
|
996 | identifier => "Frost-gpl.txt", |
|
|
997 | completion_time => 1438663354026, |
|
|
998 | data_length => 37576, |
|
|
999 | global => "true", |
|
|
1000 | metadata => { content_type => "image/jpeg" }, |
|
|
1001 | startup_time => 1438657196167, |
|
|
1002 | }, |
|
|
1003 | } |
423 | |
1004 | |
424 | =head1 EXAMPLE PROGRAM |
1005 | =head1 EXAMPLE PROGRAM |
425 | |
1006 | |
426 | use AnyEvent::FCP; |
1007 | use AnyEvent::FCP; |
427 | |
1008 | |
428 | my $fcp = new AnyEvent::FCP; |
1009 | my $fcp = new AnyEvent::FCP; |
429 | |
1010 | |
430 | # let us look at the global request list |
1011 | # let us look at the global request list |
431 | $fcp->watch_global (1, 0); |
1012 | $fcp->watch_global_ (1); |
432 | |
1013 | |
433 | # list them, synchronously |
1014 | # list them, synchronously |
434 | my $req = $fcp->list_persistent_requests_sync; |
1015 | my $req = $fcp->list_persistent_requests; |
435 | |
1016 | |
436 | # go through all requests |
1017 | # go through all requests |
|
|
1018 | TODO |
437 | for my $req (values %$req) { |
1019 | for my $req (values %$req) { |
438 | # skip jobs not directly-to-disk |
1020 | # skip jobs not directly-to-disk |
439 | next unless $req->{return_type} eq "disk"; |
1021 | next unless $req->{return_type} eq "disk"; |
440 | # skip jobs not issued by FProxy |
1022 | # skip jobs not issued by FProxy |
441 | next unless $req->{identifier} =~ /^FProxy:/; |
1023 | next unless $req->{identifier} =~ /^FProxy:/; |
… | |
… | |
462 | if 0.1 > rand; |
1044 | if 0.1 > rand; |
463 | } |
1045 | } |
464 | } |
1046 | } |
465 | |
1047 | |
466 | # see if the dummy plugin is loaded, to ensure all previous requests have finished. |
1048 | # see if the dummy plugin is loaded, to ensure all previous requests have finished. |
467 | $fcp->get_plugin_info_sync ("dummy"); |
1049 | $fcp->get_plugin_info ("dummy"); |
468 | |
1050 | |
469 | =head1 SEE ALSO |
1051 | =head1 SEE ALSO |
470 | |
1052 | |
471 | L<http://wiki.freenetproject.org/FreenetFCPSpec2Point0>, L<Net::FCP>. |
1053 | L<http://wiki.freenetproject.org/FreenetFCPSpec2Point0>, L<Net::FCP>. |
472 | |
1054 | |