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=head1 NAME |
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IPC::DirQueue::IndexClient - client for the indexd protocol |
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=head1 DESCRIPTION |
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indexd client. |
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=cut |
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package IPC::DirQueue::IndexClient; |
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use strict; |
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use bytes; |
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use IO::Socket::INET; |
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1392441
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our @ISA = (); |
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our $DEBUG; # = 1; |
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########################################################################### |
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sub new { |
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my $class = shift; |
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my $opts = shift; |
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$class = ref($class) || $class; |
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my $self = $opts; |
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$self ||= { }; |
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if ($self->{uri} =~ m,^dq://(\S+?)(\:\d+?)?$,) { |
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$self->{host} = $1; |
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my $p = $2 || '23458'; |
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$p =~ s/^://; |
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$self->{port} = $p; |
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} |
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else { |
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die "unparseable URI: $self->{uri}"; |
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} |
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bless ($self, $class); |
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$self; |
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} |
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sub dbg { |
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$DEBUG and warn "debug: ".join('', @_); |
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} |
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########################################################################### |
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sub enqueue { |
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my ($self, $qdir, $qfile) = @_; |
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my $qid = $self->_get_dir_id($qdir); |
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$qfile =~ s,^.*queue/,,; |
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$self->sock_send("ENQ q=$qid|f=$qfile\r\n"); |
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} |
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sub sock_send { |
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my ($self, $str) = @_; |
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if (!$self->_connect()) { |
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die "connect to indexd failed"; |
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} |
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$DEBUG and dbg "--> ".$str; |
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if (!$self->{socket}->print($str)) { |
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die "print to indexd failed"; |
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} |
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my $rstr = $self->{socket}->getline(); |
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$DEBUG and dbg "<-- ".$rstr; |
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if ($rstr =~ /(2\d\d) /) { |
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return $1; |
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} |
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elsif ($rstr =~ /(2\d\d)-/) { |
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return -($1); |
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} |
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else { |
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warn "indexd replied with error: $rstr"; |
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return; |
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} |
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} |
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sub dequeue { |
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my ($self, $qdir, $qfile) = @_; |
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my $qid = $self->_get_dir_id($qdir); |
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$qfile =~ s,^.*queue/,,; |
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$self->sock_send("DEQ q=$qid|f=$qfile\r\n"); |
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} |
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sub ls { |
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my ($self, $qdir) = @_; |
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my $qid = $self->_get_dir_id($qdir); |
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my $resp = $self->sock_send("LS q=$qid|\r\n"); |
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if ($resp != -201) { |
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die "need 201- response for LS"; |
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} |
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my @list = (); |
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while (1) { |
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my $str = $self->{socket}->getline(); |
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$DEBUG and dbg "<-- ".$str; |
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if ($str =~ /^202-(\S+)/) { |
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my $withqid = $1; |
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$withqid =~ s,^q=\Q$qid\E\|f=,, or warn "$withqid sub failed"; |
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push (@list, $withqid); |
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} |
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elsif ($str =~ /^200 /) { |
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last; |
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} |
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else { |
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die "bad response from indexd on ls: $str"; |
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} |
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} |
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return @list; |
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} |
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########################################################################### |
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sub _get_dir_id { |
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my ($self, $qdir) = @_; |
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# chop off the "queue" part |
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# t/log/qdir/queue -> t/log/qdir |
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$qdir =~ s,([^/]+)/+queue/*$,$1,; |
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# the ID string is: "dirname/inode" |
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# where dirname is the final part of the path, inode is the inode |
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# number of that dir. |
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my @s = stat $qdir; |
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if (!@s) { |
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die "stat $qdir failed"; |
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} |
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return "$1/$s[1]"; |
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} |
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sub _connect { |
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my ($self) = @_; |
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return 1 if ($self->{socket}); |
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my $sock = IO::Socket::INET->new ( |
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PeerAddr => $self->{host}, |
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PeerPort => $self->{port}, |
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Proto => "tcp", |
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); |
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if (!$sock) { |
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warn "connect failed to '$self->{host}':$self->{port}: $!"; |
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return; |
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} |
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$self->{socket} = $sock; |
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return 1; |
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} |
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1; |