Bug 1381869 - Use separate elasticsearch index for Bugzilla::User

This patch removes the concept of a single, bugzilla-wide index in favor of a
per-class index. bugs and comments continue to use
Bugzilla->params->{elasticsearch_index} but users use
Bugzilla->params->{elasticsearch_index} . "_user".

It is assured via the ChildObject trait (role) that comments will share the
index with bugs, and we have kept the index for bugs/comments the same to avoid
the multi-hour reindexing of production. Re-indexing users takes only five
minutes.

Subsequent work on this will allow use to version the index names and use
aliases, but I wanted to keep this patch small.

This patch also corrects some mistakes

1. $indexer->put_mapping() should not have been a public method.
2. Time::HiRes should be imported at the top of the file, not in a sub.

1 files changed, 30 insertions, 0 deletions

diff --git a/Bugzilla/User.pm b/Bugzilla/User.pm
index 2d7f38640..525733069 100644
--- a/Bugzilla/User.pm
+++ b/Bugzilla/User.pm
@@ -126,6 +126,11 @@ use constant EXTRA_REQUIRED_FIELDS => qw(is_enabled);
 
 with 'Bugzilla::Elastic::Role::Object';
 
+sub ES_INDEX {
+    my ($class) = @_;
+    sprintf("%s_%s", Bugzilla->params->{elasticsearch_index}, $class->ES_TYPE);
+}
+
 sub ES_TYPE { 'user' }
 
 sub ES_OBJECTS_AT_ONCE { 5000 }
@@ -153,6 +158,31 @@ sub ES_SELECT_ALL_SQL {
     return ("SELECT $id FROM $table WHERE $id > ? AND is_enabled AND NOT disabledtext ORDER BY $id", [$last_id // 0]);
 }
 
+sub ES_SETTINGS {
+    return {
+        number_of_shards => 2,
+        analysis         => {
+            filter => {
+                asciifolding_original => {
+                    type              => "asciifolding",
+                    preserve_original => \1,
+                },
+            },
+            analyzer => {
+                autocomplete => {
+                    type      => 'custom',
+                    tokenizer => 'keyword',
+                    filter    => [ 'lowercase', 'asciifolding_original' ],
+                },
+                folding => {
+                    tokenizer => 'standard',
+                    filter    => [ 'standard', 'lowercase', 'asciifolding_original' ],
+                },
+            }
+        }
+    };
+}
+
 sub ES_PROPERTIES {
     return {
         suggest_user => {