forked from AkkomaGang/akkoma
Merge branch 'feat/allow_alt_text_search_config' into 'develop'
allow user defined text search config in database See merge request pleroma/pleroma!3275
This commit is contained in:
commit
6e68058b63
6 changed files with 123 additions and 5 deletions
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@ -141,3 +141,21 @@ but should only be run if necessary. **It is safe to cancel this.**
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```sh
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mix pleroma.database ensure_expiration
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```
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## Change Text Search Configuration
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Change `default_text_search_config` for database and (if necessary) text_search_config used in index, then rebuild index (it may take time).
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=== "OTP"
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```sh
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./bin/pleroma_ctl database set_text_search_config english
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```
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=== "From Source"
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```sh
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mix pleroma.database set_text_search_config english
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```
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See [PostgreSQL documentation](https://www.postgresql.org/docs/current/textsearch-configuration.html) and `docs/configuration/howto_search_cjk.md` for more detail.
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42
docs/configuration/howto_search_cjk.md
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42
docs/configuration/howto_search_cjk.md
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@ -0,0 +1,42 @@
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# How to enable text search for Chinese, Japanese and Korean
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Pleroma's full text search feature is powered by PostgreSQL's native [text search](https://www.postgresql.org/docs/current/textsearch.html), it works well out of box for most of languages, but needs extra configurations for some asian languages like Chinese, Japanese and Korean (CJK).
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## Setup and test the new search config
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In most cases, you would need an extension installed to support parsing CJK text. Here are a few extension you may choose from, or you are more than welcome to share additional ones you found working for you with the rest of Pleroma community.
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* [a generic n-gram parser](https://github.com/huangjimmy/pg_cjk_parser) supports Simplifed/Traditional Chinese, Japanese, and Korean
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* [a Korean parser](https://github.com/i0seph/textsearch_ko) based on mecab
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* [a Japanese parser](https://www.amris.co.jp/tsja/index.html) based on mecab
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* [zhparser](https://github.com/amutu/zhparser/) is a PostgreSQL extension base on the Simple Chinese Word Segmentation(SCWS)
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* [another Chinese parser](https://github.com/jaiminpan/pg_jieba) based on Jieba Chinese Word Segmentation
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Once you have the new search config , make sure you test it with the `pleroma` user in PostgreSQL (change `YOUR.CONFIG` to your real configuration name)
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```
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SELECT ts_debug('YOUR.CONFIG', '安装和配置Nginx, ElixirとErlangをインストールします');
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```
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Check output of the query, and see if it matches your expectation.
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## Update text search config and index in database
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=== "OTP"
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```sh
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./bin/pleroma_ctl database set_text_search_config YOUR.CONFIG
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```
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=== "From Source"
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```sh
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mix pleroma.database set_text_search_config YOUR.CONFIG
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```
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Note: index update may take a while.
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## Restart database connection
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Since some changes above will only apply with a new database connection, you will have to restart either Pleroma or PostgreSQL process, or use `pg_terminate_backend` SQL command without restarting either.
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Now the search results of statuses should be much more friendly for your language of choice, the results for searching users and tags were not changed, as the default parsing/matching should work for most cases.
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@ -167,4 +167,51 @@ def run(["ensure_expiration"]) do
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end)
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|> Stream.run()
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end
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def run(["set_text_search_config", tsconfig]) do
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start_pleroma()
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%{rows: [[tsc]]} = Ecto.Adapters.SQL.query!(Pleroma.Repo, "SHOW default_text_search_config;")
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shell_info("Current default_text_search_config: #{tsc}")
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%{rows: [[db]]} = Ecto.Adapters.SQL.query!(Pleroma.Repo, "SELECT current_database();")
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shell_info("Update default_text_search_config: #{tsconfig}")
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%{messages: msg} =
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Ecto.Adapters.SQL.query!(
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Pleroma.Repo,
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"ALTER DATABASE #{db} SET default_text_search_config = '#{tsconfig}';"
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)
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# non-exist config will not raise excpetion but only give >0 messages
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if length(msg) > 0 do
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shell_info("Error: #{inspect(msg, pretty: true)}")
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else
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rum_enabled = Pleroma.Config.get([:database, :rum_enabled])
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shell_info("Recreate index, RUM: #{rum_enabled}")
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# Note SQL below needs to be kept up-to-date with latest GIN or RUM index definition in future
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if rum_enabled do
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Ecto.Adapters.SQL.query!(
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Pleroma.Repo,
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"CREATE OR REPLACE FUNCTION objects_fts_update() RETURNS trigger AS $$ BEGIN
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new.fts_content := to_tsvector(new.data->>'content');
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RETURN new;
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END
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$$ LANGUAGE plpgsql"
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)
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shell_info("Refresh RUM index")
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Ecto.Adapters.SQL.query!(Pleroma.Repo, "UPDATE objects SET updated_at = NOW();")
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else
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Ecto.Adapters.SQL.query!(Pleroma.Repo, "DROP INDEX IF EXISTS objects_fts;")
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Ecto.Adapters.SQL.query!(
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Pleroma.Repo,
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"CREATE INDEX objects_fts ON objects USING gin(to_tsvector('#{tsconfig}', data->>'content')); "
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)
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end
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shell_info('Done.')
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end
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end
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end
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@ -64,7 +64,7 @@ defp query_with(q, :gin, search_query, :plain) do
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from([a, o] in q,
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where:
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fragment(
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"to_tsvector('english', ?->>'content') @@ plainto_tsquery('english', ?)",
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"to_tsvector(?->>'content') @@ plainto_tsquery(?)",
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o.data,
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^search_query
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)
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@ -75,7 +75,7 @@ defp query_with(q, :gin, search_query, :websearch) do
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from([a, o] in q,
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where:
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fragment(
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"to_tsvector('english', ?->>'content') @@ websearch_to_tsquery('english', ?)",
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"to_tsvector(?->>'content') @@ websearch_to_tsquery(?)",
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o.data,
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^search_query
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)
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@ -86,7 +86,7 @@ defp query_with(q, :rum, search_query, :plain) do
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from([a, o] in q,
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where:
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fragment(
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"? @@ plainto_tsquery('english', ?)",
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"? @@ plainto_tsquery(?)",
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o.fts_content,
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^search_query
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),
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@ -98,7 +98,7 @@ defp query_with(q, :rum, search_query, :websearch) do
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from([a, o] in q,
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where:
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fragment(
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"? @@ websearch_to_tsquery('english', ?)",
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"? @@ websearch_to_tsquery(?)",
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o.fts_content,
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^search_query
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),
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@ -0,0 +1,11 @@
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defmodule Pleroma.Repo.Migrations.AddDefaultTextSearchConfig do
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use Ecto.Migration
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def change do
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execute("DO $$
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BEGIN
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execute 'ALTER DATABASE '||current_database()||' SET default_text_search_config = ''english'' ';
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END
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$$;")
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end
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end
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@ -17,7 +17,7 @@ def up do
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execute("CREATE FUNCTION objects_fts_update() RETURNS trigger AS $$
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begin
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new.fts_content := to_tsvector('english', new.data->>'content');
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new.fts_content := to_tsvector(new.data->>'content');
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return new;
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end
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$$ LANGUAGE plpgsql")
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