[performance] cache v2 filter keyword regular expressions (#2903)

* add caching of filterkeyword regular expressions

* formatting

* fix WholeWord nil check
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kim 2024-05-21 13:20:19 +00:00 committed by GitHub
commit b092da6d28
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5 changed files with 85 additions and 36 deletions

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@ -17,7 +17,10 @@
package gtsmodel
import "time"
import (
"regexp"
"time"
)
// Filter stores a filter created by a local account.
type Filter struct {
@ -39,14 +42,28 @@ type Filter struct {
// FilterKeyword stores a single keyword to filter statuses against.
type FilterKeyword struct {
ID string `bun:"type:CHAR(26),pk,nullzero,notnull,unique"` // id of this item in the database
CreatedAt time.Time `bun:"type:timestamptz,nullzero,notnull,default:current_timestamp"` // when was item created
UpdatedAt time.Time `bun:"type:timestamptz,nullzero,notnull,default:current_timestamp"` // when was item last updated
AccountID string `bun:"type:CHAR(26),notnull,nullzero"` // ID of the local account that created the filter keyword.
FilterID string `bun:"type:CHAR(26),notnull,nullzero,unique:filter_keywords_filter_id_keyword_uniq"` // ID of the filter that this keyword belongs to.
Filter *Filter `bun:"-"` // Filter corresponding to FilterID
Keyword string `bun:",nullzero,notnull,unique:filter_keywords_filter_id_keyword_uniq"` // The keyword or phrase to filter against.
WholeWord *bool `bun:",nullzero,notnull,default:false"` // Should the filter consider word boundaries?
ID string `bun:"type:CHAR(26),pk,nullzero,notnull,unique"` // id of this item in the database
CreatedAt time.Time `bun:"type:timestamptz,nullzero,notnull,default:current_timestamp"` // when was item created
UpdatedAt time.Time `bun:"type:timestamptz,nullzero,notnull,default:current_timestamp"` // when was item last updated
AccountID string `bun:"type:CHAR(26),notnull,nullzero"` // ID of the local account that created the filter keyword.
FilterID string `bun:"type:CHAR(26),notnull,nullzero,unique:filter_keywords_filter_id_keyword_uniq"` // ID of the filter that this keyword belongs to.
Filter *Filter `bun:"-"` // Filter corresponding to FilterID
Keyword string `bun:",nullzero,notnull,unique:filter_keywords_filter_id_keyword_uniq"` // The keyword or phrase to filter against.
WholeWord *bool `bun:",nullzero,notnull,default:false"` // Should the filter consider word boundaries?
Regexp *regexp.Regexp `bun:"-"` // pre-prepared regular expression
}
// Compile will compile this FilterKeyword as a prepared regular expression.
func (k *FilterKeyword) Compile() (err error) {
var wordBreak string
if k.WholeWord != nil && *k.WholeWord {
wordBreak = `\b`
}
// Compile keyword filter regexp.
quoted := regexp.QuoteMeta(k.Keyword)
k.Regexp, err = regexp.Compile(`(?i)` + wordBreak + quoted + wordBreak)
return // caller is expected to wrap this error
}
// FilterStatus stores a single status to filter.