Commit | Line | Data |
9e72f0cf |
1 | package Object::Remote::Connection; |
2 | |
f4a85080 |
3 | use Object::Remote::Logging qw (:log :dlog router); |
dc28afe8 |
4 | use Object::Remote::Future; |
9d804009 |
5 | use Object::Remote::Null; |
676438a1 |
6 | use Object::Remote::Handle; |
fe6c9a7f |
7 | use Object::Remote::CodeContainer; |
ed5a8a8e |
8 | use Object::Remote::GlobProxy; |
9 | use Object::Remote::GlobContainer; |
7790ca36 |
10 | use Object::Remote::Tied; |
9e72f0cf |
11 | use Object::Remote; |
ed5a8a8e |
12 | use Symbol; |
9e72f0cf |
13 | use IO::Handle; |
c824fdf3 |
14 | use POSIX ":sys_wait_h"; |
9e72f0cf |
15 | use Module::Runtime qw(use_module); |
f8080c1c |
16 | use Scalar::Util qw(weaken blessed refaddr openhandle); |
9e72f0cf |
17 | use JSON::PP qw(encode_json); |
783105c4 |
18 | use Future; |
5add5e29 |
19 | use Carp qw(croak); |
783105c4 |
20 | use Moo; |
9e72f0cf |
21 | |
e1a0b9ca |
22 | BEGIN { router()->exclude_forwarding } |
c824fdf3 |
23 | |
24 | END { |
5ccce2d5 |
25 | our %child_pids; |
55c0d020 |
26 | |
5ccce2d5 |
27 | log_trace { "END handler is being invoked in " . __PACKAGE__ }; |
55c0d020 |
28 | |
5ccce2d5 |
29 | foreach(keys(%child_pids)) { |
30 | log_debug { "Killing child process '$_'" }; |
31 | kill('TERM', $_); |
32 | } |
c824fdf3 |
33 | } |
34 | |
9031635d |
35 | has _id => ( is => 'ro', required => 1, default => sub { our $NEXT_CONNECTION_ID++ } ); |
ad4f54b2 |
36 | |
9e72f0cf |
37 | has send_to_fh => ( |
38 | is => 'ro', required => 1, |
90115979 |
39 | trigger => sub { |
8f43bcd9 |
40 | my $self = $_[0]; |
41 | $_[1]->autoflush(1); |
42 | Dlog_trace { my $id = $self->_id; "connection had send_to_fh set to $_" } $_[1]; |
90115979 |
43 | }, |
9e72f0cf |
44 | ); |
45 | |
12fb4a80 |
46 | has read_channel => ( |
9e72f0cf |
47 | is => 'ro', required => 1, |
48 | trigger => sub { |
12fb4a80 |
49 | my ($self, $ch) = @_; |
55c0d020 |
50 | my $id = $self->_id; |
998ff9a4 |
51 | Dlog_trace { "trigger for read_channel has been invoked for connection $id; file handle is $_" } $ch->fh; |
9e72f0cf |
52 | weaken($self); |
12fb4a80 |
53 | $ch->on_line_call(sub { $self->_receive(@_) }); |
55c0d020 |
54 | $ch->on_close_call(sub { |
998ff9a4 |
55 | log_trace { "invoking 'done' on on_close handler for connection id '$id'" }; |
37efeb68 |
56 | $self->on_close->done(@_); |
f8080c1c |
57 | }); |
9e72f0cf |
58 | }, |
59 | ); |
60 | |
12fb4a80 |
61 | has on_close => ( |
783105c4 |
62 | is => 'rw', default => sub { $_[0]->_install_future_handlers(Future->new) }, |
998ff9a4 |
63 | trigger => sub { |
8f43bcd9 |
64 | log_trace { "Installing handlers into future via trigger" }; |
65 | $_[0]->_install_future_handlers($_[1]) |
998ff9a4 |
66 | }, |
12fb4a80 |
67 | ); |
ad4f54b2 |
68 | |
47c83a13 |
69 | has child_pid => (is => 'ro'); |
70 | |
11dbd4a0 |
71 | has local_objects_by_id => ( |
72 | is => 'ro', default => sub { {} }, |
73 | coerce => sub { +{ %{$_[0]} } }, # shallow clone on the way in |
74 | ); |
9e72f0cf |
75 | |
11dbd4a0 |
76 | has remote_objects_by_id => ( |
77 | is => 'ro', default => sub { {} }, |
78 | coerce => sub { +{ %{$_[0]} } }, # shallow clone on the way in |
79 | ); |
9e72f0cf |
80 | |
a980b0b8 |
81 | has outstanding_futures => (is => 'ro', default => sub { {} }); |
82 | |
353556c4 |
83 | has _json => ( |
84 | is => 'lazy', |
85 | handles => { |
86 | _deserialize => 'decode', |
87 | _encode => 'encode', |
88 | }, |
89 | ); |
90 | |
91 | after BUILD => sub { |
998ff9a4 |
92 | my ($self) = @_; |
93 | my $pid = $self->child_pid; |
5ccce2d5 |
94 | our %child_pids; |
95 | return unless defined $pid; |
96 | $child_pids{$pid} = 1; |
97 | return; |
353556c4 |
98 | }; |
99 | |
100 | sub BUILD { } |
101 | |
d2eadebb |
102 | sub is_valid { |
103 | my ($self) = @_; |
fb258df6 |
104 | my $valid = ! $self->on_close->is_ready; |
55c0d020 |
105 | |
fb258df6 |
106 | log_trace { |
107 | my $id = $self->_id; |
108 | my $text; |
109 | if ($valid) { |
110 | $text = 'yes'; |
111 | } else { |
112 | $text = 'no'; |
113 | } |
114 | "Connection '$id' is valid: '$text'" |
115 | }; |
55c0d020 |
116 | |
fb258df6 |
117 | return $valid; |
d2eadebb |
118 | } |
119 | |
12fb4a80 |
120 | sub _fail_outstanding { |
121 | my ($self, $error) = @_; |
122 | my $outstanding = $self->outstanding_futures; |
55c0d020 |
123 | |
124 | Dlog_debug { |
d2eadebb |
125 | sprintf "Failing %i outstanding futures with '$error'", scalar(keys(%$outstanding)) |
126 | }; |
127 | |
128 | foreach(keys(%$outstanding)) { |
129 | log_trace { "Failing future for $_" }; |
130 | my $future = $outstanding->{$_}; |
867e4de5 |
131 | $future->fail("$error\n"); |
d2eadebb |
132 | } |
133 | |
12fb4a80 |
134 | %$outstanding = (); |
135 | return; |
136 | } |
137 | |
353556c4 |
138 | sub _install_future_handlers { |
139 | my ($self, $f) = @_; |
5ccce2d5 |
140 | our %child_pids; |
998ff9a4 |
141 | Dlog_trace { "Installing handlers into future for connection $_" } $self->_id; |
353556c4 |
142 | weaken($self); |
143 | $f->on_done(sub { |
998ff9a4 |
144 | my $pid = $self->child_pid; |
145 | Dlog_trace { "Executing on_done handler in future for connection $_" } $self->_id; |
353556c4 |
146 | $self->_fail_outstanding("Object::Remote connection lost: " . ($f->get)[0]); |
998ff9a4 |
147 | return unless defined $pid; |
148 | log_debug { "Waiting for child '$pid' to exit" }; |
149 | my $ret = waitpid($pid, 0); |
150 | if ($ret != $pid) { |
151 | log_debug { "Waited for pid $pid but waitpid() returned $ret" }; |
152 | return; |
153 | } elsif ($? & 127) { |
154 | log_warn { "Remote interpreter did not exit cleanly" }; |
155 | } else { |
156 | log_verbose { |
157 | my $exit_value = $? >> 8; |
158 | "Remote Perl interpreter exited with value '$exit_value'" |
159 | }; |
160 | } |
55c0d020 |
161 | |
5ccce2d5 |
162 | delete $child_pids{$pid}; |
353556c4 |
163 | }); |
55c0d020 |
164 | return $f; |
353556c4 |
165 | }; |
9e72f0cf |
166 | |
fe6c9a7f |
167 | sub _id_to_remote_object { |
168 | my ($self, $id) = @_; |
9031635d |
169 | Dlog_trace { "fetching proxy for remote object with id '$id' for connection $_" } $self->_id; |
fe6c9a7f |
170 | return bless({}, 'Object::Remote::Null') if $id eq 'NULL'; |
171 | ( |
172 | $self->remote_objects_by_id->{$id} |
173 | or Object::Remote::Handle->new(connection => $self, id => $id) |
174 | )->proxy; |
175 | } |
176 | |
9e72f0cf |
177 | sub _build__json { |
178 | weaken(my $self = shift); |
9e72f0cf |
179 | JSON::PP->new->filter_json_single_key_object( |
180 | __remote_object__ => sub { |
fe6c9a7f |
181 | $self->_id_to_remote_object(@_); |
182 | } |
183 | )->filter_json_single_key_object( |
184 | __remote_code__ => sub { |
185 | my $code_container = $self->_id_to_remote_object(@_); |
186 | sub { $code_container->call(@_) }; |
9e72f0cf |
187 | } |
6ed5d580 |
188 | )->filter_json_single_key_object( |
189 | __scalar_ref__ => sub { |
190 | my $value = shift; |
191 | return \$value; |
192 | } |
ed5a8a8e |
193 | )->filter_json_single_key_object( |
194 | __glob_ref__ => sub { |
195 | my $glob_container = $self->_id_to_remote_object(@_); |
196 | my $handle = Symbol::gensym; |
197 | tie *$handle, 'Object::Remote::GlobProxy', $glob_container; |
198 | return $handle; |
199 | } |
6163a5aa |
200 | )->filter_json_single_key_object( |
201 | __local_object__ => sub { |
202 | $self->local_objects_by_id->{$_[0]} |
203 | } |
7790ca36 |
204 | )->filter_json_single_key_object( |
205 | __remote_tied_hash__ => sub { |
37efeb68 |
206 | my %tied_hash; |
207 | tie %tied_hash, 'Object::Remote::Tied', $self->_id_to_remote_object(@_); |
208 | return \%tied_hash; |
7790ca36 |
209 | } |
210 | )->filter_json_single_key_object( |
211 | __remote_tied_array__ => sub { |
37efeb68 |
212 | my @tied_array; |
213 | tie @tied_array, 'Object::Remote::Tied', $self->_id_to_remote_object(@_); |
214 | return \@tied_array; |
7790ca36 |
215 | } |
1bf55307 |
216 | ); |
9e72f0cf |
217 | } |
218 | |
c824fdf3 |
219 | sub _load_if_possible { |
55c0d020 |
220 | my ($class) = @_; |
c824fdf3 |
221 | |
55c0d020 |
222 | use_module($class); |
c824fdf3 |
223 | |
224 | if ($@) { |
225 | log_debug { "Attempt at loading '$class' failed with '$@'" }; |
226 | } |
227 | |
228 | } |
229 | |
84b04178 |
230 | BEGIN { |
231 | unshift our @Guess, sub { blessed($_[0]) ? $_[0] : undef }; |
c824fdf3 |
232 | map _load_if_possible($_), qw( |
233 | Object::Remote::Connector::Local |
234 | Object::Remote::Connector::LocalSudo |
235 | Object::Remote::Connector::SSH |
236 | Object::Remote::Connector::UNIX |
bef36e73 |
237 | Object::Remote::Connector::INET |
55c0d020 |
238 | ); |
84b04178 |
239 | } |
240 | |
c824fdf3 |
241 | sub conn_from_spec { |
242 | my ($class, $spec, @args) = @_; |
84b04178 |
243 | foreach my $poss (do { our @Guess }) { |
c824fdf3 |
244 | if (my $conn = $poss->($spec, @args)) { |
245 | return $conn; |
fbd3b8ec |
246 | } |
84b04178 |
247 | } |
55c0d020 |
248 | |
c824fdf3 |
249 | return undef; |
250 | } |
251 | |
252 | sub new_from_spec { |
71087610 |
253 | my ($class, $spec, @args) = @_; |
c824fdf3 |
254 | return $spec if blessed $spec; |
71087610 |
255 | my $conn = $class->conn_from_spec($spec, @args); |
55c0d020 |
256 | |
c824fdf3 |
257 | die "Couldn't figure out what to do with ${spec}" |
258 | unless defined $conn; |
55c0d020 |
259 | |
260 | return $conn->maybe::start::connect; |
84b04178 |
261 | } |
262 | |
11dbd4a0 |
263 | sub remote_object { |
e144d525 |
264 | my ($self, @args) = @_; |
265 | Object::Remote::Handle->new( |
266 | connection => $self, @args |
267 | )->proxy; |
268 | } |
269 | |
4c17fea5 |
270 | sub connect { |
271 | my ($self, $to) = @_; |
9031635d |
272 | Dlog_debug { "Creating connection to remote node '$to' for connection $_" } $self->_id; |
deb77aaf |
273 | return await_future( |
274 | $self->send_class_call(0, 'Object::Remote', connect => $to) |
275 | ); |
4c17fea5 |
276 | } |
277 | |
11dbd4a0 |
278 | sub remote_sub { |
c6fe6fbd |
279 | my ($self, $sub) = @_; |
280 | my ($pkg, $name) = $sub =~ m/^(.*)::([^:]+)$/; |
fb258df6 |
281 | Dlog_debug { "Invoking remote sub '$sub' for connection '$_'" } $self->_id; |
deb77aaf |
282 | return await_future($self->send_class_call(0, $pkg, can => $name)); |
283 | } |
284 | |
285 | sub send_class_call { |
286 | my ($self, $ctx, @call) = @_; |
9031635d |
287 | Dlog_trace { "Sending a class call for connection $_" } $self->_id; |
deb77aaf |
288 | $self->send(call => class_call_handler => $ctx => call => @call); |
289 | } |
290 | |
291 | sub register_class_call_handler { |
292 | my ($self) = @_; |
3687a42d |
293 | $self->local_objects_by_id->{'class_call_handler'} ||= do { |
c5736e1c |
294 | my $o = $self->new_class_call_handler; |
3687a42d |
295 | $self->_local_object_to_id($o); |
296 | $o; |
297 | }; |
c6fe6fbd |
298 | } |
299 | |
c5736e1c |
300 | sub new_class_call_handler { |
301 | Object::Remote::CodeContainer->new( |
302 | code => sub { |
303 | my ($class, $method) = (shift, shift); |
304 | use_module($class)->$method(@_); |
305 | } |
306 | ); |
307 | } |
308 | |
9e72f0cf |
309 | sub register_remote { |
310 | my ($self, $remote) = @_; |
9031635d |
311 | Dlog_trace { my $i = $remote->id; "Registered a remote object with id of '$i' for connection $_" } $self->_id; |
9e72f0cf |
312 | weaken($self->remote_objects_by_id->{$remote->id} = $remote); |
313 | return $remote; |
314 | } |
315 | |
316 | sub send_free { |
317 | my ($self, $id) = @_; |
7790ca36 |
318 | Dlog_trace { "sending request to free object '$id' for connection $_" } $self->_id; |
302ecfbf |
319 | #TODO this shows up some times when a remote side dies in the middle of a remote |
320 | #method invocation - possibly only when the object is being constructed? |
321 | #(in cleanup) Use of uninitialized value $id in delete at ../Object-Remote/lib/Object/Remote/Connection. |
9e72f0cf |
322 | delete $self->remote_objects_by_id->{$id}; |
323 | $self->_send([ free => $id ]); |
324 | } |
325 | |
326 | sub send { |
327 | my ($self, $type, @call) = @_; |
328 | |
783105c4 |
329 | my $future = Future->new; |
a2d43709 |
330 | my $remote = $self->remote_objects_by_id->{$call[0]}; |
deb77aaf |
331 | |
332 | unshift @call, $type => $self->_local_object_to_id($future); |
9e72f0cf |
333 | |
a980b0b8 |
334 | my $outstanding = $self->outstanding_futures; |
335 | $outstanding->{$future} = $future; |
a2d43709 |
336 | $future->on_ready(sub { |
337 | undef($remote); |
338 | delete $outstanding->{$future} |
339 | }); |
a980b0b8 |
340 | |
9e72f0cf |
341 | $self->_send(\@call); |
342 | |
343 | return $future; |
344 | } |
345 | |
9d804009 |
346 | sub send_discard { |
347 | my ($self, $type, @call) = @_; |
348 | |
deb77aaf |
349 | unshift @call, $type => 'NULL'; |
9d804009 |
350 | |
351 | $self->_send(\@call); |
352 | } |
353 | |
9e72f0cf |
354 | sub _send { |
355 | my ($self, $to_send) = @_; |
9d64d2d9 |
356 | my $fh = $self->send_to_fh; |
55c0d020 |
357 | |
d2eadebb |
358 | unless ($self->is_valid) { |
5add5e29 |
359 | croak "Attempt to invoke _send on a connection that is not valid"; |
d2eadebb |
360 | } |
55c0d020 |
361 | |
9031635d |
362 | Dlog_trace { "Starting to serialize data in argument to _send for connection $_" } $self->_id; |
9d64d2d9 |
363 | my $serialized = $self->_serialize($to_send)."\n"; |
6b7b2732 |
364 | Dlog_trace { my $l = length($serialized); "serialization is completed; sending '$l' characters of serialized data to $_" } $fh; |
55c0d020 |
365 | my $ret; |
366 | eval { |
353556c4 |
367 | #TODO this should be converted over to a non-blocking ::WriteChannel class |
368 | die "filehandle is not open" unless openhandle($fh); |
369 | log_trace { "file handle has passed openhandle() test; printing to it" }; |
370 | $ret = print $fh $serialized; |
371 | die "print was not successful: $!" unless defined $ret |
f8080c1c |
372 | }; |
55c0d020 |
373 | |
f8080c1c |
374 | if ($@) { |
353556c4 |
375 | Dlog_debug { "exception encountered when trying to write to file handle $_: $@" } $fh; |
998ff9a4 |
376 | my $error = $@; |
377 | chomp($error); |
353556c4 |
378 | $self->on_close->done("could not write to file handle: $error") unless $self->on_close->is_ready; |
55c0d020 |
379 | return; |
f8080c1c |
380 | } |
55c0d020 |
381 | |
382 | return $ret; |
9e72f0cf |
383 | } |
384 | |
385 | sub _serialize { |
386 | my ($self, $data) = @_; |
3687a42d |
387 | local our @New_Ids = (-1); |
9d804009 |
388 | return eval { |
ad4f54b2 |
389 | my $flat = $self->_encode($self->_deobjectify($data)); |
ad4f54b2 |
390 | $flat; |
70a578ac |
391 | } || do { |
9d804009 |
392 | my $err = $@; # won't get here if the eval doesn't die |
393 | # don't keep refs to new things |
394 | delete @{$self->local_objects_by_id}{@New_Ids}; |
395 | die "Error serializing: $err"; |
396 | }; |
9e72f0cf |
397 | } |
398 | |
a76f2f60 |
399 | sub _local_object_to_id { |
400 | my ($self, $object) = @_; |
401 | my $id = refaddr($object); |
402 | $self->local_objects_by_id->{$id} ||= do { |
3687a42d |
403 | push our(@New_Ids), $id if @New_Ids; |
a76f2f60 |
404 | $object; |
405 | }; |
406 | return $id; |
407 | } |
408 | |
9e72f0cf |
409 | sub _deobjectify { |
410 | my ($self, $data) = @_; |
411 | if (blessed($data)) { |
6163a5aa |
412 | if ( |
413 | $data->isa('Object::Remote::Proxy') |
414 | and $data->{remote}->connection == $self |
415 | ) { |
416 | return +{ __local_object__ => $data->{remote}->id }; |
417 | } else { |
418 | return +{ __remote_object__ => $self->_local_object_to_id($data) }; |
419 | } |
9e72f0cf |
420 | } elsif (my $ref = ref($data)) { |
421 | if ($ref eq 'HASH') { |
7790ca36 |
422 | my $tied_to = tied(%$data); |
423 | if(defined($tied_to)) { |
55c0d020 |
424 | return +{__remote_tied_hash__ => $self->_local_object_to_id($tied_to)}; |
7790ca36 |
425 | } else { |
426 | return +{ map +($_ => $self->_deobjectify($data->{$_})), keys %$data }; |
427 | } |
9e72f0cf |
428 | } elsif ($ref eq 'ARRAY') { |
7790ca36 |
429 | my $tied_to = tied(@$data); |
430 | if (defined($tied_to)) { |
55c0d020 |
431 | return +{__remote_tied_array__ => $self->_local_object_to_id($tied_to)}; |
7790ca36 |
432 | } else { |
433 | return [ map $self->_deobjectify($_), @$data ]; |
434 | } |
fe6c9a7f |
435 | } elsif ($ref eq 'CODE') { |
436 | my $id = $self->_local_object_to_id( |
437 | Object::Remote::CodeContainer->new(code => $data) |
438 | ); |
439 | return +{ __remote_code__ => $id }; |
6ed5d580 |
440 | } elsif ($ref eq 'SCALAR') { |
441 | return +{ __scalar_ref__ => $$data }; |
ed5a8a8e |
442 | } elsif ($ref eq 'GLOB') { |
443 | return +{ __glob_ref__ => $self->_local_object_to_id( |
444 | Object::Remote::GlobContainer->new(handle => $data) |
445 | ) }; |
9e72f0cf |
446 | } else { |
447 | die "Can't collapse reftype $ref"; |
448 | } |
449 | } |
450 | return $data; # plain scalar |
451 | } |
452 | |
9e72f0cf |
453 | sub _receive { |
ad4f54b2 |
454 | my ($self, $flat) = @_; |
9031635d |
455 | Dlog_trace { my $l = length($flat); "Starting to deserialize $l characters of data for connection $_" } $self->_id; |
ad4f54b2 |
456 | my ($type, @rest) = eval { @{$self->_deserialize($flat)} } |
457 | or do { warn "Deserialize failed for ${flat}: $@"; return }; |
9031635d |
458 | Dlog_trace { "deserialization complete for connection $_" } $self->_id; |
9e72f0cf |
459 | eval { $self->${\"receive_${type}"}(@rest); 1 } |
ad4f54b2 |
460 | or do { warn "Receive failed for ${flat}: $@"; return }; |
9e72f0cf |
461 | return; |
462 | } |
463 | |
464 | sub receive_free { |
465 | my ($self, $id) = @_; |
9031635d |
466 | Dlog_trace { "got a receive_free for object '$id' for connection $_" } $self->_id; |
9d804009 |
467 | delete $self->local_objects_by_id->{$id} |
468 | or warn "Free: no such object $id"; |
9e72f0cf |
469 | return; |
470 | } |
471 | |
472 | sub receive_call { |
deb77aaf |
473 | my ($self, $future_id, $id, @rest) = @_; |
9031635d |
474 | Dlog_trace { "got a receive_call for object '$id' for connection $_" } $self->_id; |
deb77aaf |
475 | my $future = $self->_id_to_remote_object($future_id); |
8131a88a |
476 | $future->{method} = 'call_discard_free'; |
9e72f0cf |
477 | my $local = $self->local_objects_by_id->{$id} |
478 | or do { $future->fail("No such object $id"); return }; |
479 | $self->_invoke($future, $local, @rest); |
480 | } |
481 | |
8131a88a |
482 | sub receive_call_free { |
483 | my ($self, $future, $id, @rest) = @_; |
9031635d |
484 | Dlog_trace { "got a receive_call_free for object '$id' for connection $_" } $self->_id; |
84b04178 |
485 | $self->receive_call($future, $id, undef, @rest); |
8131a88a |
486 | $self->receive_free($id); |
487 | } |
488 | |
9e72f0cf |
489 | sub _invoke { |
84b04178 |
490 | my ($self, $future, $local, $ctx, $method, @args) = @_; |
9031635d |
491 | Dlog_trace { "got _invoke for a method named '$method' for connection $_" } $self->_id; |
dc28afe8 |
492 | if ($method =~ /^start::/) { |
493 | my $f = $local->$method(@args); |
494 | $f->on_done(sub { undef($f); $future->done(@_) }); |
3f1f1e66 |
495 | return unless $f; |
dc28afe8 |
496 | $f->on_fail(sub { undef($f); $future->fail(@_) }); |
497 | return; |
498 | } |
84b04178 |
499 | my $do = sub { $local->$method(@args) }; |
500 | eval { |
501 | $future->done( |
502 | defined($ctx) |
503 | ? ($ctx ? $do->() : scalar($do->())) |
504 | : do { $do->(); () } |
505 | ); |
506 | 1; |
507 | } or do { $future->fail($@); return; }; |
9e72f0cf |
508 | return; |
509 | } |
510 | |
9e72f0cf |
511 | 1; |
b9a9982d |
512 | |
513 | =head1 NAME |
514 | |
515 | Object::Remote::Connection - An underlying connection for L<Object::Remote> |
516 | |
b0ec7e3b |
517 | use Object::Remote; |
55c0d020 |
518 | |
b0ec7e3b |
519 | my $local = Object::Remote->connect('-'); |
de9062cf |
520 | my $remote = Object::Remote->connect('myserver'); |
521 | my $remote_user = Object::Remote->connect('user@myserver'); |
b0ec7e3b |
522 | my $local_sudo = Object::Remote->connect('user@'); |
55c0d020 |
523 | |
b0ec7e3b |
524 | #$remote can be any other connection object |
525 | my $hostname = Sys::Hostname->can::on($remote, 'hostname'); |
55c0d020 |
526 | |
b0ec7e3b |
527 | =head1 DESCRIPTION |
528 | |
de9062cf |
529 | This is the class that supports connections to remote objects. |
b0ec7e3b |
530 | |
531 | =head1 SEE ALSO |
532 | |
533 | =over 4 |
534 | |
de9062cf |
535 | =item C<Object::Remote::Role::Connector::PerlInterpreter> |
536 | |
b0ec7e3b |
537 | =item C<Object::Remote> |
b9a9982d |
538 | |
b0ec7e3b |
539 | =back |
b9a9982d |
540 | |
541 | =cut |