… | |
… | |
204 | use AnyEvent (); |
204 | use AnyEvent (); |
205 | use Guard (); |
205 | use Guard (); |
206 | |
206 | |
207 | use base "Exporter"; |
207 | use base "Exporter"; |
208 | |
208 | |
209 | our $VERSION = $AnyEvent::MP::Config::VERSION; |
209 | our $VERSION = '2.02'; # also in MP/Config.pm |
210 | |
210 | |
211 | our @EXPORT = qw( |
211 | our @EXPORT = qw( |
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|
212 | configure |
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|
213 | |
212 | NODE $NODE |
214 | NODE $NODE |
213 | configure |
215 | *SELF |
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|
216 | |
214 | node_of port_is_local |
217 | node_of port_is_local |
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|
218 | |
215 | snd kil |
219 | snd kil |
216 | db_set db_del |
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|
217 | db_mon db_family db_keys db_values |
|
|
218 | |
|
|
219 | *SELF |
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|
220 | |
|
|
221 | port rcv mon mon_guard psub peval spawn cal |
220 | port rcv mon mon_guard psub peval spawn cal |
222 | db_set db_del db_reg |
221 | db_set db_del db_reg |
223 | db_mon db_family db_keys db_values |
222 | db_mon db_family db_keys db_values |
224 | |
223 | |
225 | after |
224 | after |
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… | |
303 | this process. If not, then the profile name will be used as node ID, with |
302 | this process. If not, then the profile name will be used as node ID, with |
304 | a unique randoms tring (C</%u>) appended. |
303 | a unique randoms tring (C</%u>) appended. |
305 | |
304 | |
306 | The node ID can contain some C<%> sequences that are expanded: C<%n> |
305 | The node ID can contain some C<%> sequences that are expanded: C<%n> |
307 | is expanded to the local nodename, C<%u> is replaced by a random |
306 | is expanded to the local nodename, C<%u> is replaced by a random |
308 | strign to make the node unique. For example, the F<aemp> commandline |
307 | string to make the node unique. For example, the F<aemp> commandline |
309 | utility uses C<aemp/%n/%u> as nodename, which might expand to |
308 | utility uses C<aemp/%n/%u> as nodename, which might expand to |
310 | C<aemp/cerebro/ZQDGSIkRhEZQDGSIkRhE>. |
309 | C<aemp/cerebro/ZQDGSIkRhEZQDGSIkRhE>. |
311 | |
310 | |
312 | =item step 2, bind listener sockets |
311 | =item step 2, bind listener sockets |
313 | |
312 | |
… | |
… | |
418 | =cut |
417 | =cut |
419 | |
418 | |
420 | sub rcv($@); |
419 | sub rcv($@); |
421 | |
420 | |
422 | my $KILME = sub { |
421 | my $KILME = sub { |
423 | (my $tag = substr $_[0], 0, 30) =~ s/([\x20-\x7e])/./g; |
422 | (my $tag = substr $_[0], 0, 30) =~ s/([^\x20-\x7e])/./g; |
424 | kil $SELF, unhandled_message => "no callback found for message '$tag'"; |
423 | kil $SELF, unhandled_message => "no callback found for message '$tag'"; |
425 | }; |
424 | }; |
426 | |
425 | |
427 | sub port(;&) { |
426 | sub port(;&) { |
428 | my $id = $UNIQ . ++$ID; |
427 | my $id = $UNIQ . ++$ID; |
… | |
… | |
539 | $port |
538 | $port |
540 | } |
539 | } |
541 | |
540 | |
542 | =item peval $port, $coderef[, @args] |
541 | =item peval $port, $coderef[, @args] |
543 | |
542 | |
544 | Evaluates the given C<$codref> within the contetx of C<$port>, that is, |
543 | Evaluates the given C<$codref> within the context of C<$port>, that is, |
545 | when the code throws an exception the C<$port> will be killed. |
544 | when the code throws an exception the C<$port> will be killed. |
546 | |
545 | |
547 | Any remaining args will be passed to the callback. Any return values will |
546 | Any remaining args will be passed to the callback. Any return values will |
548 | be returned to the caller. |
547 | be returned to the caller. |
549 | |
548 | |
… | |
… | |
651 | In the last form (message), a message of the form C<$rcvport, @msg, |
650 | In the last form (message), a message of the form C<$rcvport, @msg, |
652 | @reason> will be C<snd>. |
651 | @reason> will be C<snd>. |
653 | |
652 | |
654 | Monitoring-actions are one-shot: once messages are lost (and a monitoring |
653 | Monitoring-actions are one-shot: once messages are lost (and a monitoring |
655 | alert was raised), they are removed and will not trigger again, even if it |
654 | alert was raised), they are removed and will not trigger again, even if it |
656 | turns out that the port is still alive. |
655 | turns out that the port is still alive (but monitoring actions added after |
|
|
656 | that will again trigger). |
657 | |
657 | |
658 | As a rule of thumb, monitoring requests should always monitor a remote |
658 | As a rule of thumb, monitoring requests should always monitor a remote |
659 | port locally (using a local C<$rcvport> or a callback). The reason is that |
659 | port locally (using a local C<$rcvport> or a callback). The reason is that |
660 | kill messages might get lost, just like any other message. Another less |
660 | kill messages might get lost, just like any other message. Another less |
661 | obvious reason is that even monitoring requests can get lost (for example, |
661 | obvious reason is that even monitoring requests can get lost (for example, |
… | |
… | |
877 | #=item $cb2 = timeout $seconds, $cb[, @args] |
877 | #=item $cb2 = timeout $seconds, $cb[, @args] |
878 | |
878 | |
879 | =item cal $port, @msg, $callback[, $timeout] |
879 | =item cal $port, @msg, $callback[, $timeout] |
880 | |
880 | |
881 | A simple form of RPC - sends a message to the given C<$port> with the |
881 | A simple form of RPC - sends a message to the given C<$port> with the |
882 | given contents (C<@msg>), but adds a reply port to the message. |
882 | given contents (C<@msg>), but appends a reply port to the message. |
883 | |
883 | |
884 | The reply port is created temporarily just for the purpose of receiving |
884 | The reply port is created temporarily just for the purpose of receiving |
885 | the reply, and will be C<kil>ed when no longer needed. |
885 | the reply, and will be C<kil>ed when no longer needed. |
886 | |
886 | |
887 | A reply message sent to the port is passed to the C<$callback> as-is. |
887 | A reply message sent to the port is passed to the C<$callback> as-is. |
… | |
… | |
1314 | C<grp_mon> can be replaced by C<db_mon> with minor changes - C<db_mon> |
1314 | C<grp_mon> can be replaced by C<db_mon> with minor changes - C<db_mon> |
1315 | passes a hash as first argument, and an extra C<$chg> argument that can be |
1315 | passes a hash as first argument, and an extra C<$chg> argument that can be |
1316 | ignored: |
1316 | ignored: |
1317 | |
1317 | |
1318 | db_mon $group => sub { |
1318 | db_mon $group => sub { |
1319 | my ($ports, $add, $chg, $lde) = @_; |
1319 | my ($ports, $add, $chg, $del) = @_; |
1320 | $ports = [keys %$ports]; |
1320 | $ports = [keys %$ports]; |
1321 | |
1321 | |
1322 | # now $ports, $add and $del are the same as |
1322 | # now $ports, $add and $del are the same as |
1323 | # were originally passed by grp_mon. |
1323 | # were originally passed by grp_mon. |
1324 | ... |
1324 | ... |
… | |
… | |
1378 | =back |
1378 | =back |
1379 | |
1379 | |
1380 | =head1 LOGGING |
1380 | =head1 LOGGING |
1381 | |
1381 | |
1382 | AnyEvent::MP does not normally log anything by itself, but since it is the |
1382 | AnyEvent::MP does not normally log anything by itself, but since it is the |
1383 | root of the contetx hierarchy for AnyEvent::MP modules, it will receive |
1383 | root of the context hierarchy for AnyEvent::MP modules, it will receive |
1384 | all log messages by submodules. |
1384 | all log messages by submodules. |
1385 | |
1385 | |
1386 | =head1 SEE ALSO |
1386 | =head1 SEE ALSO |
1387 | |
1387 | |
1388 | L<AnyEvent::MP::Intro> - a gentle introduction. |
1388 | L<AnyEvent::MP::Intro> - a gentle introduction. |