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Refactor `modules/indexer` to make it more maintainable. And it can be easier to support more features. I'm trying to solve some of issue searching, this is a precursor to making functional changes. Current supported engines and the index versions: | engines | issues | code | | - | - | - | | db | Just a wrapper for database queries, doesn't need version | - | | bleve | The version of index is **2** | The version of index is **6** | | elasticsearch | The old index has no version, will be treated as version **0** in this PR | The version of index is **1** | | meilisearch | The old index has no version, will be treated as version **0** in this PR | - | ## Changes ### Split Splited it into mutiple packages ```text indexer ├── internal │ ├── bleve │ ├── db │ ├── elasticsearch │ └── meilisearch ├── code │ ├── bleve │ ├── elasticsearch │ └── internal └── issues ├── bleve ├── db ├── elasticsearch ├── internal └── meilisearch ``` - `indexer/interanal`: Internal shared package for indexer. - `indexer/interanal/[engine]`: Internal shared package for each engine (bleve/db/elasticsearch/meilisearch). - `indexer/code`: Implementations for code indexer. - `indexer/code/internal`: Internal shared package for code indexer. - `indexer/code/[engine]`: Implementation via each engine for code indexer. - `indexer/issues`: Implementations for issues indexer. ### Deduplication - Combine `Init/Ping/Close` for code indexer and issues indexer. - ~Combine `issues.indexerHolder` and `code.wrappedIndexer` to `internal.IndexHolder`.~ Remove it, use dummy indexer instead when the indexer is not ready. - Duplicate two copies of creating ES clients. - Duplicate two copies of `indexerID()`. ### Enhancement - [x] Support index version for elasticsearch issues indexer, the old index without version will be treated as version 0. - [x] Fix spell of `elastic_search/ElasticSearch`, it should be `Elasticsearch`. - [x] Improve versioning of ES index. We don't need `Aliases`: - Gitea does't need aliases for "Zero Downtime" because it never delete old indexes. - The old code of issues indexer uses the orignal name to create issue index, so it's tricky to convert it to an alias. - [x] Support index version for meilisearch issues indexer, the old index without version will be treated as version 0. - [x] Do "ping" only when `Ping` has been called, don't ping periodically and cache the status. - [x] Support the context parameter whenever possible. - [x] Fix outdated example config. - [x] Give up the requeue logic of issues indexer: When indexing fails, call Ping to check if it was caused by the engine being unavailable, and only requeue the task if the engine is unavailable. - It is fragile and tricky, could cause data losing (It did happen when I was doing some tests for this PR). And it works for ES only. - Just always requeue the failed task, if it caused by bad data, it's a bug of Gitea which should be fixed. --------- Co-authored-by: Giteabot <teabot@gitea.io>
136 lines
3.3 KiB
Go
136 lines
3.3 KiB
Go
// Copyright 2021 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package explore
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import (
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"net/http"
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repo_model "code.gitea.io/gitea/models/repo"
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"code.gitea.io/gitea/modules/base"
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"code.gitea.io/gitea/modules/context"
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code_indexer "code.gitea.io/gitea/modules/indexer/code"
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"code.gitea.io/gitea/modules/setting"
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)
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const (
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// tplExploreCode explore code page template
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tplExploreCode base.TplName = "explore/code"
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)
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// Code render explore code page
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func Code(ctx *context.Context) {
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if !setting.Indexer.RepoIndexerEnabled {
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ctx.Redirect(setting.AppSubURL + "/explore")
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return
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}
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ctx.Data["UsersIsDisabled"] = setting.Service.Explore.DisableUsersPage
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ctx.Data["IsRepoIndexerEnabled"] = setting.Indexer.RepoIndexerEnabled
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ctx.Data["Title"] = ctx.Tr("explore")
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ctx.Data["PageIsExplore"] = true
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ctx.Data["PageIsExploreCode"] = true
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language := ctx.FormTrim("l")
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keyword := ctx.FormTrim("q")
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queryType := ctx.FormTrim("t")
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isMatch := queryType == "match"
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ctx.Data["Keyword"] = keyword
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ctx.Data["Language"] = language
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ctx.Data["queryType"] = queryType
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ctx.Data["PageIsViewCode"] = true
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if keyword == "" {
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ctx.HTML(http.StatusOK, tplExploreCode)
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return
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}
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page := ctx.FormInt("page")
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if page <= 0 {
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page = 1
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}
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var (
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repoIDs []int64
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err error
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isAdmin bool
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)
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if ctx.Doer != nil {
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isAdmin = ctx.Doer.IsAdmin
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}
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// guest user or non-admin user
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if ctx.Doer == nil || !isAdmin {
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repoIDs, err = repo_model.FindUserCodeAccessibleRepoIDs(ctx, ctx.Doer)
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if err != nil {
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ctx.ServerError("FindUserCodeAccessibleRepoIDs", err)
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return
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}
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}
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var (
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total int
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searchResults []*code_indexer.Result
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searchResultLanguages []*code_indexer.SearchResultLanguages
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)
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if (len(repoIDs) > 0) || isAdmin {
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total, searchResults, searchResultLanguages, err = code_indexer.PerformSearch(ctx, repoIDs, language, keyword, page, setting.UI.RepoSearchPagingNum, isMatch)
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if err != nil {
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if code_indexer.IsAvailable(ctx) {
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ctx.ServerError("SearchResults", err)
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return
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}
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ctx.Data["CodeIndexerUnavailable"] = true
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} else {
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ctx.Data["CodeIndexerUnavailable"] = !code_indexer.IsAvailable(ctx)
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}
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loadRepoIDs := make([]int64, 0, len(searchResults))
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for _, result := range searchResults {
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var find bool
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for _, id := range loadRepoIDs {
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if id == result.RepoID {
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find = true
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break
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}
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}
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if !find {
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loadRepoIDs = append(loadRepoIDs, result.RepoID)
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}
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}
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repoMaps, err := repo_model.GetRepositoriesMapByIDs(loadRepoIDs)
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if err != nil {
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ctx.ServerError("GetRepositoriesMapByIDs", err)
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return
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}
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ctx.Data["RepoMaps"] = repoMaps
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if len(loadRepoIDs) != len(repoMaps) {
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// Remove deleted repos from search results
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cleanedSearchResults := make([]*code_indexer.Result, 0, len(repoMaps))
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for _, sr := range searchResults {
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if _, found := repoMaps[sr.RepoID]; found {
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cleanedSearchResults = append(cleanedSearchResults, sr)
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}
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}
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searchResults = cleanedSearchResults
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}
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}
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ctx.Data["SearchResults"] = searchResults
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ctx.Data["SearchResultLanguages"] = searchResultLanguages
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pager := context.NewPagination(total, setting.UI.RepoSearchPagingNum, page, 5)
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pager.SetDefaultParams(ctx)
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pager.AddParam(ctx, "l", "Language")
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ctx.Data["Page"] = pager
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ctx.HTML(http.StatusOK, tplExploreCode)
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}
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