SOAP::Lite log transport request/response with custom identifier - perl

Question

I would like to log SOAP::Lite transport request/response contents using a custom identifier (e.g. a transaction-id or txn_id in my example below):
#!/usr/bin/perl
use strict;
use warnings;
use Data::Dumper;
use SOAP::Lite +trace => [ transport => \&log_transport, ];
sub log_transport {
my ($in) = #_;
if (ref($in) eq "HTTP::Request") {
# INSERT INTO logs ( txn_id, request ) VALUES ( $tnx_id, $in->content )
say STDERR Dumper(ref($in), $in->content);
}
elsif (ref($in) eq "HTTP::Response") {
# UPDATE logs SET response = '$in->content' WHERE txn_id = $tnx_id
say STDERR Dumper(ref($in), $in->content);
}
}
$ENV{PERL_LWP_SSL_VERIFY_HOSTNAME}=0;
my $soap = SOAP::Lite->proxy('https://www.dataaccess.com/webservicesserver/NumberConversion.wso?op=NumberToWords');
$soap->serializer()->register_ns('http://www.dataaccess.com/webservicesserver/' ,"ns");
sub getWords
{
my ($number, $txn_id) = #_ ;
my $method = SOAP::Data->name("ns:NumberToWords");
my #params = ( SOAP::Data->name("ubiNum" => $number) );
my $response = $soap->call($method => #params);
if (!$response->fault) {
say STDOUT "NumberToWords = " . $response->result;
}
else {
say STDERR "error: " . (defined $response->faultstring? $response->faultstring : $soap->transport->status);
}
}
getWords(444, '123abc');
In my example above, how can I pass the transaction-id 123abc to my logger?
P.S. I do not wish to use:
$soap->outputxml(1)->call($method => #params)

Answer 1

It does not seem like the SOAP::Trace transport callback supports extra argument passing. As a workaround you could use a lexical variable declared in the outer scope like this:
use strict;
use warnings;
use Data::Dumper;
my $TXN_ID;
use SOAP::Lite +trace => [ transport => \&log_transport, ];
sub log_transport {
my ($in) = #_;
say STDERR "Logging transaction id: $TXN_ID:";
if (ref($in) eq "HTTP::Request") {
# INSERT INTO logs ( txn_id, request ) VALUES ( $tnx_id, $in->content )
say STDERR Dumper(ref($in), $in->content);
}
elsif (ref($in) eq "HTTP::Response") {
# UPDATE logs SET response = '$in->content' WHERE txn_id = $tnx_id
say STDERR Dumper(ref($in), $in->content);
}
}
$ENV{PERL_LWP_SSL_VERIFY_HOSTNAME}=0;
my $soap = SOAP::Lite->proxy('https://www.dataaccess.com/webservicesserver/NumberConversion.wso?op=NumberToWords');
$soap->serializer()->register_ns('http://www.dataaccess.com/webservicesserver/' ,"ns");
sub getWords
{
my ($number, $txn_id) = #_ ;
$TXN_ID = $txn_id;
my $method = SOAP::Data->name("ns:NumberToWords");
my #params = ( SOAP::Data->name("ubiNum" => $number) );
my $response = $soap->call($method => #params);
if (!$response->fault) {
say STDOUT "NumberToWords = " . $response->result;
}
else {
say STDERR "error: " . (defined $response->faultstring? $response->faultstring : $soap->transport->status);
}
}
getWords(444, '123abc');