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Component-wide TransactionWriters (#1290)

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* Offset updates take place using TransactionWriter

* Refactor TransactionWriter in current state server

* Refactor TransactionWriter in federation sender

* Refactor TransactionWriter in key server

* Refactor TransactionWriter in media API

* Refactor TransactionWriter in server key API

* Refactor TransactionWriter in sync API

* Refactor TransactionWriter in user API

* Fix deadlocking Sync API tests

* Un-deadlock device database

* Fix appservice API

* Rename TransactionWriters to Writers

* Move writers up a layer in sync API

* Document sqlutil.Writer interface

* Add note to Writer documentation
This commit is contained in:
Neil Alexander 2020-08-21 10:42:08 +01:00 • committed by GitHub
parent 5aaf32bbed
commit 9d53351dc2
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56 changed files with 483 additions and 483 deletions
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13
internal/sqlutil/partition_offset_table.go
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@ -53,6 +53,8 @@ const upsertPartitionOffsetsSQL = "" +
// PartitionOffsetStatements represents a set of statements that can be run on a partition_offsets table.
type PartitionOffsetStatements struct {
db *sql.DB
writer Writer
selectPartitionOffsetsStmt *sql.Stmt
upsertPartitionOffsetStmt *sql.Stmt
}
@ -60,7 +62,9 @@ type PartitionOffsetStatements struct {
// Prepare converts the raw SQL statements into prepared statements.
// Takes a prefix to prepend to the table name used to store the partition offsets.
// This allows multiple components to share the same database schema.
func (s *PartitionOffsetStatements) Prepare(db *sql.DB, prefix string) (err error) {
func (s *PartitionOffsetStatements) Prepare(db *sql.DB, writer Writer, prefix string) (err error) {
s.db = db
s.writer = writer
_, err = db.Exec(strings.Replace(partitionOffsetsSchema, "${prefix}", prefix, -1))
if err != nil {
return
@ -121,6 +125,9 @@ func (s *PartitionOffsetStatements) selectPartitionOffsets(
func (s *PartitionOffsetStatements) upsertPartitionOffset(
ctx context.Context, topic string, partition int32, offset int64,
) error {
_, err := s.upsertPartitionOffsetStmt.ExecContext(ctx, topic, partition, offset)
return err
return s.writer.Do(s.db, nil, func(txn *sql.Tx) error {
stmt := TxStmt(txn, s.upsertPartitionOffsetStmt)
_, err := stmt.ExecContext(ctx, topic, partition, offset)
return err
})
}