From: Dirk Koopman <djk@tobit.co.uk>
Date: Sun, 4 Sep 2022 23:01:06 +0000 (+0100)
Subject: add missing convert-users-v3-to-v4.pl
X-Git-Url: http://dxcluster.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=53b251b7abcc15dd2f854b7e8c2e71a075e9969a;p=spider.git

add missing convert-users-v3-to-v4.pl
---

diff --git a/perl/convert-users-v3-to-v4.pl b/perl/convert-users-v3-to-v4.pl
new file mode 100755
index 00000000..43489a7c
--- /dev/null
+++ b/perl/convert-users-v3-to-v4.pl
@@ -0,0 +1,177 @@
+#!/usr/bin/env perl
+#
+# Convert users.v2 or .v3 to JSON .v4 format
+#
+# It is believed that this can be run at any time...
+#
+# Copyright (c) 2020 Dirk Koopman G1TLH
+#
+#
+# 
+
+# make sure that modules are searched in the order local then perl
+
+our $root;
+
+BEGIN {
+	# root of directory tree for this system
+	$root = "/spider"; 
+	$root = $ENV{'DXSPIDER_ROOT'} if $ENV{'DXSPIDER_ROOT'};
+    unshift @INC, "$root/perl";     # this IS the right way round!
+	unshift @INC, "$root/local";
+}
+
+use strict;
+
+use DXVars;
+use DXUser;
+use JSON;
+use Data::Structure::Util qw(unbless);
+use Time::HiRes qw(gettimeofday tv_interval);
+use IO::File;
+use File::Copy;
+use Carp;
+use DB_File;
+
+use 5.10.1;
+
+my $ufn;
+my $fn = "users";
+
+my $json = JSON->new()->canonical(1);
+my $ofn = localdata("$fn.v4");
+my $convert;
+
+eval {
+	require Storable;
+};
+
+if ($@) {
+	if ( ! -e localdata("$fn.v3") && -e localdata("$fn.v2") ) {
+		$convert = 2;
+	}
+	LogDbg('',"the module Storable appears to be missing!!");
+	LogDbg('',"trying to continue in compatibility mode (this may fail)");
+	LogDbg('',"please install Storable from CPAN as soon as possible");
+}
+else {
+	import Storable qw(nfreeze thaw);
+	$convert = 3 if -e localdata("users.v3") && !-e $ufn;
+}
+
+die "need to have a $fn.v2 or (preferably) a $fn.v3 file in /spider/data or /spider/local_data\n" unless $convert;
+
+if (-e $ofn || -e "$ofn.n") {
+	my $nfn = localdata("$fn.v4.json");
+	say "You appear to have (or are using) $ofn, creating $nfn instead";
+	$ofn = $nfn;
+} else {
+	$ofn = "$ofn.n";
+	say "using $ofn.n for output";
+}
+
+
+# do a conversion if required
+if ($convert) {
+	my ($key, $val, $action, $count, $err) = ('','',0,0,0);
+	my $ta = [gettimeofday];
+	my $ofh = IO::File->new(">$ofn") or die "cannot open $ofn ($!)\n";
+	my $oldfn = localdata("users.v$convert");
+			
+	my %oldu;
+	LogDbg('',"Converting the User File from V$convert to $fn.v4 ");
+	LogDbg('',"This will take a while, maybe as much as 10 secs");
+	my $odbm = tie (%oldu, 'DB_File', $oldfn, O_RDONLY, 0666, $DB_BTREE) or confess "can't open user file: $oldfn ($!) [rebuild it from user_asc?]";
+	for ($action = R_FIRST; !$odbm->seq($key, $val, $action); $action = R_NEXT) {
+		my $ref;
+		if ($convert == 3) {
+			eval { $ref = storable_decode($val) };
+		}
+		else {
+			eval { $ref = asc_decode($val) };
+		}
+		unless ($@) {
+			if ($ref) {
+				unbless $ref;
+				$ofh->print("$ref->{call}\t" . $json->encode($ref) . "\n");
+				$count++;
+			}
+			else {
+				$err++
+			}
+		}
+		else {
+			Log('err', "DXUser: error decoding $@");
+		}
+	} 
+	undef $odbm;
+	untie %oldu;
+	my $t = _diffms($ta);
+	LogDbg('',"Conversion from $oldfn to $ofn completed $count records $err errors $t mS");
+	$ofh->close;
+}
+
+exit 0;
+
+sub asc_decode
+{
+	my $s = shift;
+	my $ref;
+	$s =~ s/\%([0-9A-F][0-9A-F])/chr(hex($1))/eg;
+	eval '$ref = ' . $s;
+	if ($@) {
+		LogDbg('err', "DXUser::asc_decode: on '$s' $@");
+		$ref = undef;
+	}
+	return $ref;
+}
+
+sub storable_decode
+{
+	my $ref;
+	$ref = thaw(shift);
+	return $ref;
+}
+
+sub LogDbg
+{
+	my (undef, $s) = @_;
+	say $s;
+}
+
+sub Log
+{
+	say shift;
+}
+
+# find the correct local_data directory
+# basically, if there is a local_data directory with this filename and it is younger than the
+# equivalent one in the (system) data directory then return that name rather than the system one
+sub localdata
+{
+	my $ifn = shift;
+	my $ofn = "$root/local_data/$ifn";
+	my $tfn;
+        
+	if (-e "$root/local_data") {
+		$tfn = "$main::data/$ifn";
+		if ((-e $tfn) && (-e $ofn)) {
+			$ofn = $tfn if -M $ofn < -M $tfn;
+		}
+		else {
+			$ofn = $tfn if -e $tfn;
+		}
+	}
+
+	return $ofn;
+}
+# measure the time taken for something to happen; use Time::HiRes qw(gettimeofday tv_interval);
+sub _diffms
+{
+    my $ta = shift;
+    my $tb = shift || [gettimeofday];
+    my $a = int($ta->[0] * 1000) + int($ta->[1] / 1000);
+    my $b = int($tb->[0] * 1000) + int($tb->[1] / 1000);
+    return $b - $a;
+}
+