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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#
# This Source Code Form is "Incompatible With Secondary Licenses", as
# defined by the Mozilla Public License, v. 2.0.
package Bugzilla::Elastic::Indexer;
use 5.10.1;
use Moo;
use List::MoreUtils qw(natatime);
use Storable qw(dclone);
use Scalar::Util qw(looks_like_number);
use Time::HiRes;
use namespace::clean;
with 'Bugzilla::Elastic::Role::HasClient';
has 'shadow_dbh' => (is => 'lazy');
has 'debug_sql' => (is => 'ro', default => 0,);
has 'progress_bar' => (is => 'ro', predicate => 'has_progress_bar',);
sub _create_index {
my ($self, $class) = @_;
my $indices = $self->client->indices;
my $index_name = $class->ES_INDEX;
unless ($indices->exists(index => $index_name)) {
$indices->create(
index => $index_name,
body => {settings => $class->ES_SETTINGS},
);
}
}
sub _bulk_helper {
my ($self, $class) = @_;
return $self->client->bulk_helper(
index => $class->ES_INDEX,
type => $class->ES_TYPE,
);
}
sub _find_largest {
my ($self, $class, $field) = @_;
my $result = $self->client->search(
index => $class->ES_INDEX,
type => $class->ES_TYPE,
body => {aggs => {$field => {extended_stats => {field => $field}}}, size => 0}
);
my $max = $result->{aggregations}{$field}{max};
if (not defined $max) {
return 0;
}
elsif (looks_like_number($max)) {
return $max;
}
else {
die "largest value for '$field' is not a number: $max";
}
}
sub _find_largest_mtime {
my ($self, $class) = @_;
return $self->_find_largest($class, 'es_mtime');
}
sub _find_largest_id {
my ($self, $class) = @_;
return $self->_find_largest($class, $class->ID_FIELD);
}
sub _put_mapping {
my ($self, $class) = @_;
my %body = (properties => scalar $class->ES_PROPERTIES);
if ($class->does('Bugzilla::Elastic::Role::ChildObject')) {
$body{_parent} = {type => $class->ES_PARENT_TYPE};
}
$self->client->indices->put_mapping(
index => $class->ES_INDEX,
type => $class->ES_TYPE,
body => \%body,
);
}
sub _debug_sql {
my ($self, $sql, $params) = @_;
if ($self->debug_sql) {
my ($out, @args) = ($sql, $params ? (@$params) : ());
$out =~ s/^\n//gs;
$out =~ s/^\s{8}//gm;
$out =~ s/\?/Bugzilla->dbh->quote(shift @args)/ge;
warn $out, "\n";
}
return ($sql, $params);
}
sub bulk_load {
my ($self, $class) = @_;
$self->_create_index($class);
my $bulk = $self->_bulk_helper($class);
my $last_mtime = $self->_find_largest_mtime($class);
my $last_id = $self->_find_largest_id($class);
my $new_ids = $self->_select_all_ids($class, $last_id);
my $updated_ids = $self->_select_updated_ids($class, $last_mtime);
$self->_put_mapping($class);
$self->_bulk_load_ids($bulk, $class, $new_ids) if @$new_ids;
$self->_bulk_load_ids($bulk, $class, $updated_ids) if @$updated_ids;
return {new => scalar @$new_ids, updated => scalar @$updated_ids,};
}
sub _select_all_ids {
my ($self, $class, $last_id) = @_;
my $dbh = Bugzilla->dbh;
my ($sql, $params) = $self->_debug_sql($class->ES_SELECT_ALL_SQL($last_id));
return $dbh->selectcol_arrayref($sql, undef, @$params);
}
sub _select_updated_ids {
my ($self, $class, $last_mtime) = @_;
my $dbh = Bugzilla->dbh;
my ($updated_sql, $updated_params)
= $self->_debug_sql($class->ES_SELECT_UPDATED_SQL($last_mtime));
return $dbh->selectcol_arrayref($updated_sql, undef, @$updated_params);
}
sub bulk_load_ids {
my ($self, $class, $ids) = @_;
$self->_create_index($class);
$self->_put_mapping($class);
$self->_bulk_load_ids($self->_bulk_helper($class), $class, $ids);
}
sub _bulk_load_ids {
my ($self, $bulk, $class, $all_ids) = @_;
my $iter = natatime $class->ES_OBJECTS_AT_ONCE, @$all_ids;
my $mtime = $self->_current_mtime;
my $progress_bar;
my $next_update;
if ($self->has_progress_bar) {
my $name = (split(/::/, $class))[-1];
$progress_bar
= $self->progress_bar->new({
name => $name, count => scalar @$all_ids, ETA => 'linear'
});
$progress_bar->message(
sprintf "loading %d $class objects, %d at a time",
scalar @$all_ids,
$class->ES_OBJECTS_AT_ONCE
);
$next_update = $progress_bar->update(0);
$progress_bar->max_update_rate(1);
}
my $total = 0;
my $start = time;
while (my @ids = $iter->()) {
if ($progress_bar) {
$total += @ids;
if ($total >= $next_update) {
$next_update = $progress_bar->update($total);
my $duration = time - $start || 1;
}
}
my $objects = $class->new_from_list(\@ids);
foreach my $object (@$objects) {
my %doc
= (id => $object->es_id, source => scalar $object->es_document($mtime),);
if ($class->does('Bugzilla::Elastic::Role::ChildObject')) {
$doc{parent} = $object->es_parent_id;
}
$bulk->index(\%doc);
}
Bugzilla->_cleanup();
}
$bulk->flush;
}
sub _build_shadow_dbh { Bugzilla->switch_to_shadow_db }
sub _current_mtime {
my ($self) = @_;
my ($mtime)
= $self->shadow_dbh->selectrow_array("SELECT UNIX_TIMESTAMP(NOW())");
return $mtime;
}
1;
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