feat: support statement_timeout and transaction_timeout property #578
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This was referenced Oct 27, 2025
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Add a statement_timeout connection property that is used as the default timeout for the execution of all statements that are executed on a connection. The timeout is only used for the actual execution, and not attached to the iterator that is returned for a query. This also means that a query that is executed without the DirectExecuteQuery option, will ignore the statement_timeout value. Also adds a transaction_timeout property that is additionally used for all statements in a read/write transaction. The deadline of the transaction is calculated at the start of the transaction, and all statements in the transaction get this deadline, unless the statement already has an earlier deadline from for example a statement_timeout or a context deadline. This change also fixes some issues with deadlines when using the gRPC API of SpannerLib. The context that is used for an RPC invocation is cancelled after the RPC has finished. This context should therefore not be used as the context for any query execution, as the context is attached to the row iterator, and would cancel the query execution halfway. Fixes #574 Fixes #575
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Add a statement_timeout connection property that is used as the default timeout
for all statements that are executed on a connection. If both a context timeout
and a statement_timeout is specified, then the lower of the two will be used.
Also adds a transaction_timeout property that is additionally used for all
statements in a read/write transaction. The deadline of the transaction is
calculated at the start of the transaction, and all statements in the transaction
get this deadline, unless the statement already has an earlier deadline from
for example a statement_timeout or a context deadline.
Fixes #574
Fixes #575