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

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* add caching of filterkeyword regular expressions

* formatting

* fix WholeWord nil check
This commit is contained in:
kim 2024-05-21 13:20:19 +00:00 committed by GitHub
parent 6c0d93c6cb
commit b092da6d28
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GPG key ID: B5690EEEBB952194
5 changed files with 85 additions and 36 deletions
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5
internal/cache/db.go vendored
View file

@ -531,6 +531,11 @@ func (c *Caches) initFilterKeyword() {
// See internal/db/bundb/filter.go.
filterKeyword2.Filter = nil
// We specifically DO NOT unset
// the regexp field here, as any
// regexp.Regexp instance is safe
// for concurrent access.
return filterKeyword2
}

67
internal/db/bundb/filterkeyword.go
View file

@ -25,6 +25,7 @@
"github.com/superseriousbusiness/gotosocial/internal/gtscontext"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/superseriousbusiness/gotosocial/internal/log"
"github.com/superseriousbusiness/gotosocial/internal/util"
"github.com/uptrace/bun"
)
@ -34,12 +35,22 @@ func (f *filterDB) GetFilterKeywordByID(ctx context.Context, id string) (*gtsmod
"ID",
func() (*gtsmodel.FilterKeyword, error) {
var filterKeyword gtsmodel.FilterKeyword
err := f.db.
// Scan from DB.
if err := f.db.
NewSelect().
Model(&filterKeyword).
Where("? = ?", bun.Ident("id"), id).
Scan(ctx)
return &filterKeyword, err
Scan(ctx); err != nil {
return nil, err
}
// Pre-compile filter keyword regular expression.
if err := filterKeyword.Compile(); err != nil {
return nil, gtserror.Newf("error compiling filter keyword regex: %w", err)
}
return &filterKeyword, nil
},
id,
)
@ -57,20 +68,20 @@ func() (*gtsmodel.FilterKeyword, error) {
return filterKeyword, nil
}
func (f *filterDB) populateFilterKeyword(ctx context.Context, filterKeyword *gtsmodel.FilterKeyword) error {
func (f *filterDB) populateFilterKeyword(ctx context.Context, filterKeyword *gtsmodel.FilterKeyword) (err error) {
if filterKeyword.Filter == nil {
// Filter is not set, fetch from the cache or database.
filter, err := f.state.DB.GetFilterByID(
// Don't populate the filter with all of its keywords and statuses or we'll just end up back here.
filterKeyword.Filter, err = f.state.DB.GetFilterByID(
// Don't populate the filter with all of its keywords
// and statuses or we'll just end up back here.
gtscontext.SetBarebones(ctx),
filterKeyword.FilterID,
)
if err != nil {
return err
}
filterKeyword.Filter = filter
}
return nil
}
@ -84,6 +95,7 @@ func (f *filterDB) GetFilterKeywordsForAccountID(ctx context.Context, accountID
func (f *filterDB) getFilterKeywords(ctx context.Context, idColumn string, id string) ([]*gtsmodel.FilterKeyword, error) {
var filterKeywordIDs []string
if err := f.db.
NewSelect().
Model((*gtsmodel.FilterKeyword)(nil)).
@ -92,6 +104,7 @@ func (f *filterDB) getFilterKeywords(ctx context.Context, idColumn string, id st
Scan(ctx, &filterKeywordIDs); err != nil {
return nil, err
}
if len(filterKeywordIDs) == 0 {
return nil, nil
}
@ -101,6 +114,8 @@ func (f *filterDB) getFilterKeywords(ctx context.Context, idColumn string, id st
filterKeywordIDs,
func(uncachedFilterKeywordIDs []string) ([]*gtsmodel.FilterKeyword, error) {
uncachedFilterKeywords := make([]*gtsmodel.FilterKeyword, 0, len(uncachedFilterKeywordIDs))
// Scan from DB.
if err := f.db.
NewSelect().
Model(&uncachedFilterKeywords).
@ -108,6 +123,16 @@ func(uncachedFilterKeywordIDs []string) ([]*gtsmodel.FilterKeyword, error) {
Scan(ctx); err != nil {
return nil, err
}
// Compile all the keyword regular expressions.
uncachedFilterKeywords = slices.DeleteFunc(uncachedFilterKeywords, func(filterKeyword *gtsmodel.FilterKeyword) bool {
if err := filterKeyword.Compile(); err != nil {
log.Errorf(ctx, "error compiling filter keyword regex: %v", err)
return true
}
return false
})
return uncachedFilterKeywords, nil
},
)
@ -125,23 +150,26 @@ func(uncachedFilterKeywordIDs []string) ([]*gtsmodel.FilterKeyword, error) {
}
// Populate the filter keywords. Remove any that we can't populate from the return slice.
errs := gtserror.NewMultiError(len(filterKeywords))
filterKeywords = slices.DeleteFunc(filterKeywords, func(filterKeyword *gtsmodel.FilterKeyword) bool {
if err := f.populateFilterKeyword(ctx, filterKeyword); err != nil {
errs.Appendf(
"error populating filter keyword %s: %w",
filterKeyword.ID,
err,
)
log.Errorf(ctx, "error populating filter keyword: %v", err)
return true
}
return false
})
return filterKeywords, errs.Combine()
return filterKeywords, nil
}
func (f *filterDB) PutFilterKeyword(ctx context.Context, filterKeyword *gtsmodel.FilterKeyword) error {
if filterKeyword.Regexp == nil {
// Ensure regexp is compiled
// before attempted caching.
err := filterKeyword.Compile()
if err != nil {
return gtserror.Newf("error compiling filter keyword regex: %w", err)
}
}
return f.state.Caches.GTS.FilterKeyword.Store(filterKeyword, func() error {
_, err := f.db.
NewInsert().
@ -156,7 +184,14 @@ func (f *filterDB) UpdateFilterKeyword(ctx context.Context, filterKeyword *gtsmo
if len(columns) > 0 {
columns = append(columns, "updated_at")
}
if filterKeyword.Regexp == nil {
// Ensure regexp is compiled
// before attempted caching.
err := filterKeyword.Compile()
if err != nil {
return gtserror.Newf("error compiling filter keyword regex: %w", err)
}
}
return f.state.Caches.GTS.FilterKeyword.Store(filterKeyword, func() error {
_, err := f.db.
NewUpdate().

19
internal/gtsmodel/filter.go
View file

@ -17,7 +17,10 @@
package gtsmodel
import "time"
import (
"regexp"
"time"
)
// Filter stores a filter created by a local account.
type Filter struct {
@ -47,6 +50,20 @@ type FilterKeyword struct {
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.

12
internal/typeutils/internaltofrontend.go
View file

@ -22,7 +22,6 @@
"errors"
"fmt"
"math"
"regexp"
"strconv"
"strings"
"time"
@ -746,18 +745,9 @@ func (c *Converter) statusToAPIFilterResults(
keywordMatches := make([]string, 0, len(filter.Keywords))
fields := filterableTextFields(s)
for _, filterKeyword := range filter.Keywords {
wholeWord := util.PtrValueOr(filterKeyword.WholeWord, false)
wordBreak := ``
if wholeWord {
wordBreak = `\b`
}
re, err := regexp.Compile(`(?i)` + wordBreak + regexp.QuoteMeta(filterKeyword.Keyword) + wordBreak)
if err != nil {
return nil, err
}
var isMatch bool
for _, field := range fields {
if re.MatchString(field) {
if filterKeyword.Regexp.MatchString(field) {
isMatch = true
break
}

2
internal/typeutils/internaltofrontend_test.go
View file

@ -546,6 +546,7 @@ func (suite *InternalToFrontendTestSuite) TestWarnFilteredStatusToFrontend() {
requestingAccount := suite.testAccounts["local_account_1"]
expectedMatchingFilter := suite.testFilters["local_account_1_filter_1"]
expectedMatchingFilterKeyword := suite.testFilterKeywords["local_account_1_filter_1_keyword_1"]
suite.NoError(expectedMatchingFilterKeyword.Compile())
expectedMatchingFilterKeyword.Filter = expectedMatchingFilter
expectedMatchingFilter.Keywords = []*gtsmodel.FilterKeyword{expectedMatchingFilterKeyword}
requestingAccountFilters := []*gtsmodel.Filter{expectedMatchingFilter}
@ -700,6 +701,7 @@ func (suite *InternalToFrontendTestSuite) TestHideFilteredStatusToFrontend() {
expectedMatchingFilter := suite.testFilters["local_account_1_filter_1"]
expectedMatchingFilter.Action = gtsmodel.FilterActionHide
expectedMatchingFilterKeyword := suite.testFilterKeywords["local_account_1_filter_1_keyword_1"]
suite.NoError(expectedMatchingFilterKeyword.Compile())
expectedMatchingFilterKeyword.Filter = expectedMatchingFilter
expectedMatchingFilter.Keywords = []*gtsmodel.FilterKeyword{expectedMatchingFilterKeyword}
requestingAccountFilters := []*gtsmodel.Filter{expectedMatchingFilter}