mirror of
https://github.com/1f349/dendrite.git
synced 2024-11-29 23:21:36 +00:00
b5aa7ca3ab
* Move config, setup, mscs into "setup" top-level folder * oops, forgot the EDU server * Add setup * goimports
227 lines
6.9 KiB
Go
227 lines
6.9 KiB
Go
package msc2836
|
|
|
|
import (
|
|
"context"
|
|
"database/sql"
|
|
"encoding/json"
|
|
|
|
"github.com/matrix-org/dendrite/internal/sqlutil"
|
|
"github.com/matrix-org/dendrite/setup/config"
|
|
"github.com/matrix-org/gomatrixserverlib"
|
|
)
|
|
|
|
type eventInfo struct {
|
|
EventID string
|
|
OriginServerTS gomatrixserverlib.Timestamp
|
|
RoomID string
|
|
Servers []string
|
|
}
|
|
|
|
type Database interface {
|
|
// StoreRelation stores the parent->child and child->parent relationship for later querying.
|
|
// Also stores the event metadata e.g timestamp
|
|
StoreRelation(ctx context.Context, ev *gomatrixserverlib.HeaderedEvent) error
|
|
// ChildrenForParent returns the events who have the given `eventID` as an m.relationship with the
|
|
// provided `relType`. The returned slice is sorted by origin_server_ts according to whether
|
|
// `recentFirst` is true or false.
|
|
ChildrenForParent(ctx context.Context, eventID, relType string, recentFirst bool) ([]eventInfo, error)
|
|
}
|
|
|
|
type DB struct {
|
|
db *sql.DB
|
|
writer sqlutil.Writer
|
|
insertEdgeStmt *sql.Stmt
|
|
insertNodeStmt *sql.Stmt
|
|
selectChildrenForParentOldestFirstStmt *sql.Stmt
|
|
selectChildrenForParentRecentFirstStmt *sql.Stmt
|
|
}
|
|
|
|
// NewDatabase loads the database for msc2836
|
|
func NewDatabase(dbOpts *config.DatabaseOptions) (Database, error) {
|
|
if dbOpts.ConnectionString.IsPostgres() {
|
|
return newPostgresDatabase(dbOpts)
|
|
}
|
|
return newSQLiteDatabase(dbOpts)
|
|
}
|
|
|
|
func newPostgresDatabase(dbOpts *config.DatabaseOptions) (Database, error) {
|
|
d := DB{
|
|
writer: sqlutil.NewDummyWriter(),
|
|
}
|
|
var err error
|
|
if d.db, err = sqlutil.Open(dbOpts); err != nil {
|
|
return nil, err
|
|
}
|
|
_, err = d.db.Exec(`
|
|
CREATE TABLE IF NOT EXISTS msc2836_edges (
|
|
parent_event_id TEXT NOT NULL,
|
|
child_event_id TEXT NOT NULL,
|
|
rel_type TEXT NOT NULL,
|
|
parent_room_id TEXT NOT NULL,
|
|
parent_servers TEXT NOT NULL,
|
|
CONSTRAINT msc2836_edges_uniq UNIQUE (parent_event_id, child_event_id, rel_type)
|
|
);
|
|
|
|
CREATE TABLE IF NOT EXISTS msc2836_nodes (
|
|
event_id TEXT PRIMARY KEY NOT NULL,
|
|
origin_server_ts BIGINT NOT NULL,
|
|
room_id TEXT NOT NULL
|
|
);
|
|
`)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if d.insertEdgeStmt, err = d.db.Prepare(`
|
|
INSERT INTO msc2836_edges(parent_event_id, child_event_id, rel_type, parent_room_id, parent_servers) VALUES($1, $2, $3, $4, $5) ON CONFLICT DO NOTHING
|
|
`); err != nil {
|
|
return nil, err
|
|
}
|
|
if d.insertNodeStmt, err = d.db.Prepare(`
|
|
INSERT INTO msc2836_nodes(event_id, origin_server_ts, room_id) VALUES($1, $2, $3) ON CONFLICT DO NOTHING
|
|
`); err != nil {
|
|
return nil, err
|
|
}
|
|
selectChildrenQuery := `
|
|
SELECT child_event_id, origin_server_ts, room_id FROM msc2836_edges
|
|
LEFT JOIN msc2836_nodes ON msc2836_edges.child_event_id = msc2836_nodes.event_id
|
|
WHERE parent_event_id = $1 AND rel_type = $2
|
|
ORDER BY origin_server_ts
|
|
`
|
|
if d.selectChildrenForParentOldestFirstStmt, err = d.db.Prepare(selectChildrenQuery + "ASC"); err != nil {
|
|
return nil, err
|
|
}
|
|
if d.selectChildrenForParentRecentFirstStmt, err = d.db.Prepare(selectChildrenQuery + "DESC"); err != nil {
|
|
return nil, err
|
|
}
|
|
return &d, err
|
|
}
|
|
|
|
func newSQLiteDatabase(dbOpts *config.DatabaseOptions) (Database, error) {
|
|
d := DB{
|
|
writer: sqlutil.NewExclusiveWriter(),
|
|
}
|
|
var err error
|
|
if d.db, err = sqlutil.Open(dbOpts); err != nil {
|
|
return nil, err
|
|
}
|
|
_, err = d.db.Exec(`
|
|
CREATE TABLE IF NOT EXISTS msc2836_edges (
|
|
parent_event_id TEXT NOT NULL,
|
|
child_event_id TEXT NOT NULL,
|
|
rel_type TEXT NOT NULL,
|
|
parent_room_id TEXT NOT NULL,
|
|
parent_servers TEXT NOT NULL,
|
|
UNIQUE (parent_event_id, child_event_id, rel_type)
|
|
);
|
|
|
|
CREATE TABLE IF NOT EXISTS msc2836_nodes (
|
|
event_id TEXT PRIMARY KEY NOT NULL,
|
|
origin_server_ts BIGINT NOT NULL,
|
|
room_id TEXT NOT NULL
|
|
);
|
|
`)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if d.insertEdgeStmt, err = d.db.Prepare(`
|
|
INSERT INTO msc2836_edges(parent_event_id, child_event_id, rel_type, parent_room_id, parent_servers) VALUES($1, $2, $3, $4, $5) ON CONFLICT (parent_event_id, child_event_id, rel_type) DO NOTHING
|
|
`); err != nil {
|
|
return nil, err
|
|
}
|
|
if d.insertNodeStmt, err = d.db.Prepare(`
|
|
INSERT INTO msc2836_nodes(event_id, origin_server_ts, room_id) VALUES($1, $2, $3) ON CONFLICT DO NOTHING
|
|
`); err != nil {
|
|
return nil, err
|
|
}
|
|
selectChildrenQuery := `
|
|
SELECT child_event_id, origin_server_ts, room_id FROM msc2836_edges
|
|
LEFT JOIN msc2836_nodes ON msc2836_edges.child_event_id = msc2836_nodes.event_id
|
|
WHERE parent_event_id = $1 AND rel_type = $2
|
|
ORDER BY origin_server_ts
|
|
`
|
|
if d.selectChildrenForParentOldestFirstStmt, err = d.db.Prepare(selectChildrenQuery + "ASC"); err != nil {
|
|
return nil, err
|
|
}
|
|
if d.selectChildrenForParentRecentFirstStmt, err = d.db.Prepare(selectChildrenQuery + "DESC"); err != nil {
|
|
return nil, err
|
|
}
|
|
return &d, nil
|
|
}
|
|
|
|
func (p *DB) StoreRelation(ctx context.Context, ev *gomatrixserverlib.HeaderedEvent) error {
|
|
parent, child, relType := parentChildEventIDs(ev)
|
|
if parent == "" || child == "" {
|
|
return nil
|
|
}
|
|
relationRoomID, relationServers := roomIDAndServers(ev)
|
|
relationServersJSON, err := json.Marshal(relationServers)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return p.writer.Do(p.db, nil, func(txn *sql.Tx) error {
|
|
_, err := txn.Stmt(p.insertEdgeStmt).ExecContext(ctx, parent, child, relType, relationRoomID, string(relationServersJSON))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
_, err = txn.Stmt(p.insertNodeStmt).ExecContext(ctx, ev.EventID(), ev.OriginServerTS(), ev.RoomID())
|
|
return err
|
|
})
|
|
}
|
|
|
|
func (p *DB) ChildrenForParent(ctx context.Context, eventID, relType string, recentFirst bool) ([]eventInfo, error) {
|
|
var rows *sql.Rows
|
|
var err error
|
|
if recentFirst {
|
|
rows, err = p.selectChildrenForParentRecentFirstStmt.QueryContext(ctx, eventID, relType)
|
|
} else {
|
|
rows, err = p.selectChildrenForParentOldestFirstStmt.QueryContext(ctx, eventID, relType)
|
|
}
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer rows.Close() // nolint: errcheck
|
|
var children []eventInfo
|
|
for rows.Next() {
|
|
var evInfo eventInfo
|
|
if err := rows.Scan(&evInfo.EventID, &evInfo.OriginServerTS, &evInfo.RoomID); err != nil {
|
|
return nil, err
|
|
}
|
|
children = append(children, evInfo)
|
|
}
|
|
return children, nil
|
|
}
|
|
|
|
func parentChildEventIDs(ev *gomatrixserverlib.HeaderedEvent) (parent, child, relType string) {
|
|
if ev == nil {
|
|
return
|
|
}
|
|
body := struct {
|
|
Relationship struct {
|
|
RelType string `json:"rel_type"`
|
|
EventID string `json:"event_id"`
|
|
} `json:"m.relationship"`
|
|
}{}
|
|
if err := json.Unmarshal(ev.Content(), &body); err != nil {
|
|
return
|
|
}
|
|
if body.Relationship.EventID == "" || body.Relationship.RelType == "" {
|
|
return
|
|
}
|
|
return body.Relationship.EventID, ev.EventID(), body.Relationship.RelType
|
|
}
|
|
|
|
func roomIDAndServers(ev *gomatrixserverlib.HeaderedEvent) (roomID string, servers []string) {
|
|
servers = []string{}
|
|
if ev == nil {
|
|
return
|
|
}
|
|
body := struct {
|
|
RoomID string `json:"relationship_room_id"`
|
|
Servers []string `json:"relationship_servers"`
|
|
}{}
|
|
if err := json.Unmarshal(ev.Unsigned(), &body); err != nil {
|
|
return
|
|
}
|
|
return body.RoomID, body.Servers
|
|
}
|