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