263 lines
7.6 KiB
PL/PgSQL
263 lines
7.6 KiB
PL/PgSQL
--
|
|
-- Test explicit subtransactions
|
|
--
|
|
|
|
-- Test table to see if transactions get properly rolled back
|
|
|
|
CREATE TABLE subtransaction_tbl (
|
|
i integer
|
|
);
|
|
|
|
CREATE FUNCTION subtransaction_ctx_test(what_error text = NULL) RETURNS text
|
|
AS $$
|
|
with plpy.subtransaction():
|
|
plpy.execute("INSERT INTO subtransaction_tbl VALUES (1)")
|
|
plpy.execute("INSERT INTO subtransaction_tbl VALUES (2)")
|
|
if what_error == "SPI":
|
|
plpy.execute("INSERT INTO subtransaction_tbl VALUES ('oops')")
|
|
elif what_error == "Python":
|
|
raise Exception("Python exception")
|
|
$$ LANGUAGE plpython3u;
|
|
|
|
SELECT subtransaction_ctx_test();
|
|
SELECT * FROM subtransaction_tbl;
|
|
TRUNCATE subtransaction_tbl;
|
|
SELECT subtransaction_ctx_test('SPI');
|
|
SELECT * FROM subtransaction_tbl;
|
|
TRUNCATE subtransaction_tbl;
|
|
SELECT subtransaction_ctx_test('Python');
|
|
SELECT * FROM subtransaction_tbl;
|
|
TRUNCATE subtransaction_tbl;
|
|
|
|
-- Nested subtransactions
|
|
|
|
CREATE FUNCTION subtransaction_nested_test(swallow boolean = 'f') RETURNS text
|
|
AS $$
|
|
plpy.execute("INSERT INTO subtransaction_tbl VALUES (1)")
|
|
with plpy.subtransaction():
|
|
plpy.execute("INSERT INTO subtransaction_tbl VALUES (2)")
|
|
try:
|
|
with plpy.subtransaction():
|
|
plpy.execute("INSERT INTO subtransaction_tbl VALUES (3)")
|
|
plpy.execute("error")
|
|
except plpy.SPIError as e:
|
|
if not swallow:
|
|
raise
|
|
plpy.notice("Swallowed %s(%r)" % (e.__class__.__name__, e.args[0]))
|
|
return "ok"
|
|
$$ LANGUAGE plpython3u;
|
|
|
|
SELECT subtransaction_nested_test();
|
|
SELECT * FROM subtransaction_tbl;
|
|
TRUNCATE subtransaction_tbl;
|
|
|
|
SELECT subtransaction_nested_test('t');
|
|
SELECT * FROM subtransaction_tbl;
|
|
TRUNCATE subtransaction_tbl;
|
|
|
|
-- Nested subtransactions that recursively call code dealing with
|
|
-- subtransactions
|
|
|
|
CREATE FUNCTION subtransaction_deeply_nested_test() RETURNS text
|
|
AS $$
|
|
plpy.execute("INSERT INTO subtransaction_tbl VALUES (1)")
|
|
with plpy.subtransaction():
|
|
plpy.execute("INSERT INTO subtransaction_tbl VALUES (2)")
|
|
plpy.execute("SELECT subtransaction_nested_test('t')")
|
|
return "ok"
|
|
$$ LANGUAGE plpython3u;
|
|
|
|
SELECT subtransaction_deeply_nested_test();
|
|
SELECT * FROM subtransaction_tbl;
|
|
TRUNCATE subtransaction_tbl;
|
|
|
|
-- Error conditions from not opening/closing subtransactions
|
|
|
|
CREATE FUNCTION subtransaction_exit_without_enter() RETURNS void
|
|
AS $$
|
|
plpy.subtransaction().__exit__(None, None, None)
|
|
$$ LANGUAGE plpython3u;
|
|
|
|
CREATE FUNCTION subtransaction_enter_without_exit() RETURNS void
|
|
AS $$
|
|
plpy.subtransaction().__enter__()
|
|
$$ LANGUAGE plpython3u;
|
|
|
|
CREATE FUNCTION subtransaction_exit_twice() RETURNS void
|
|
AS $$
|
|
plpy.subtransaction().__enter__()
|
|
plpy.subtransaction().__exit__(None, None, None)
|
|
plpy.subtransaction().__exit__(None, None, None)
|
|
$$ LANGUAGE plpython3u;
|
|
|
|
CREATE FUNCTION subtransaction_enter_twice() RETURNS void
|
|
AS $$
|
|
plpy.subtransaction().__enter__()
|
|
plpy.subtransaction().__enter__()
|
|
$$ LANGUAGE plpython3u;
|
|
|
|
CREATE FUNCTION subtransaction_exit_same_subtransaction_twice() RETURNS void
|
|
AS $$
|
|
s = plpy.subtransaction()
|
|
s.__enter__()
|
|
s.__exit__(None, None, None)
|
|
s.__exit__(None, None, None)
|
|
$$ LANGUAGE plpython3u;
|
|
|
|
CREATE FUNCTION subtransaction_enter_same_subtransaction_twice() RETURNS void
|
|
AS $$
|
|
s = plpy.subtransaction()
|
|
s.__enter__()
|
|
s.__enter__()
|
|
s.__exit__(None, None, None)
|
|
$$ LANGUAGE plpython3u;
|
|
|
|
-- No warnings here, as the subtransaction gets indeed closed
|
|
CREATE FUNCTION subtransaction_enter_subtransaction_in_with() RETURNS void
|
|
AS $$
|
|
with plpy.subtransaction() as s:
|
|
s.__enter__()
|
|
$$ LANGUAGE plpython3u;
|
|
|
|
CREATE FUNCTION subtransaction_exit_subtransaction_in_with() RETURNS void
|
|
AS $$
|
|
try:
|
|
with plpy.subtransaction() as s:
|
|
s.__exit__(None, None, None)
|
|
except ValueError as e:
|
|
raise ValueError(e)
|
|
$$ LANGUAGE plpython3u;
|
|
|
|
SELECT subtransaction_exit_without_enter();
|
|
SELECT subtransaction_enter_without_exit();
|
|
SELECT subtransaction_exit_twice();
|
|
SELECT subtransaction_enter_twice();
|
|
SELECT subtransaction_exit_same_subtransaction_twice();
|
|
SELECT subtransaction_enter_same_subtransaction_twice();
|
|
SELECT subtransaction_enter_subtransaction_in_with();
|
|
SELECT subtransaction_exit_subtransaction_in_with();
|
|
|
|
-- Make sure we don't get a "current transaction is aborted" error
|
|
SELECT 1 as test;
|
|
|
|
-- Mix explicit subtransactions and normal SPI calls
|
|
|
|
CREATE FUNCTION subtransaction_mix_explicit_and_implicit() RETURNS void
|
|
AS $$
|
|
p = plpy.prepare("INSERT INTO subtransaction_tbl VALUES ($1)", ["integer"])
|
|
try:
|
|
with plpy.subtransaction():
|
|
plpy.execute("INSERT INTO subtransaction_tbl VALUES (1)")
|
|
plpy.execute(p, [2])
|
|
plpy.execute(p, ["wrong"])
|
|
except plpy.SPIError:
|
|
plpy.warning("Caught a SPI error from an explicit subtransaction")
|
|
|
|
try:
|
|
plpy.execute("INSERT INTO subtransaction_tbl VALUES (1)")
|
|
plpy.execute(p, [2])
|
|
plpy.execute(p, ["wrong"])
|
|
except plpy.SPIError:
|
|
plpy.warning("Caught a SPI error")
|
|
$$ LANGUAGE plpython3u;
|
|
|
|
SELECT subtransaction_mix_explicit_and_implicit();
|
|
SELECT * FROM subtransaction_tbl;
|
|
TRUNCATE subtransaction_tbl;
|
|
|
|
-- Alternative method names for Python <2.6
|
|
|
|
CREATE FUNCTION subtransaction_alternative_names() RETURNS void
|
|
AS $$
|
|
s = plpy.subtransaction()
|
|
s.enter()
|
|
s.exit(None, None, None)
|
|
$$ LANGUAGE plpython3u;
|
|
|
|
SELECT subtransaction_alternative_names();
|
|
|
|
-- try/catch inside a subtransaction block
|
|
|
|
CREATE FUNCTION try_catch_inside_subtransaction() RETURNS void
|
|
AS $$
|
|
with plpy.subtransaction():
|
|
plpy.execute("INSERT INTO subtransaction_tbl VALUES (1)")
|
|
try:
|
|
plpy.execute("INSERT INTO subtransaction_tbl VALUES ('a')")
|
|
except plpy.SPIError:
|
|
plpy.notice("caught")
|
|
$$ LANGUAGE plpython3u;
|
|
|
|
SELECT try_catch_inside_subtransaction();
|
|
SELECT * FROM subtransaction_tbl;
|
|
TRUNCATE subtransaction_tbl;
|
|
|
|
ALTER TABLE subtransaction_tbl ADD PRIMARY KEY (i);
|
|
|
|
CREATE FUNCTION pk_violation_inside_subtransaction() RETURNS void
|
|
AS $$
|
|
with plpy.subtransaction():
|
|
plpy.execute("INSERT INTO subtransaction_tbl VALUES (1)")
|
|
try:
|
|
plpy.execute("INSERT INTO subtransaction_tbl VALUES (1)")
|
|
except plpy.SPIError:
|
|
plpy.notice("caught")
|
|
$$ LANGUAGE plpython3u;
|
|
|
|
SELECT pk_violation_inside_subtransaction();
|
|
SELECT * FROM subtransaction_tbl;
|
|
|
|
DROP TABLE subtransaction_tbl;
|
|
|
|
-- cursor/subtransactions interactions
|
|
|
|
CREATE FUNCTION cursor_in_subxact() RETURNS int AS $$
|
|
with plpy.subtransaction():
|
|
cur = plpy.cursor("select * from generate_series(1, 20) as gen(i)")
|
|
cur.fetch(10)
|
|
fetched = cur.fetch(10);
|
|
return int(fetched[5]["i"])
|
|
$$ LANGUAGE plpython3u;
|
|
|
|
CREATE FUNCTION cursor_aborted_subxact() RETURNS int AS $$
|
|
try:
|
|
with plpy.subtransaction():
|
|
cur = plpy.cursor("select * from generate_series(1, 20) as gen(i)")
|
|
cur.fetch(10);
|
|
plpy.execute("select no_such_function()")
|
|
except plpy.SPIError:
|
|
fetched = cur.fetch(10)
|
|
return int(fetched[5]["i"])
|
|
return 0 # not reached
|
|
$$ LANGUAGE plpython3u;
|
|
|
|
CREATE FUNCTION cursor_plan_aborted_subxact() RETURNS int AS $$
|
|
try:
|
|
with plpy.subtransaction():
|
|
plpy.execute('create temporary table tmp(i) '
|
|
'as select generate_series(1, 10)')
|
|
plan = plpy.prepare("select i from tmp")
|
|
cur = plpy.cursor(plan)
|
|
plpy.execute("select no_such_function()")
|
|
except plpy.SPIError:
|
|
fetched = cur.fetch(5)
|
|
return fetched[2]["i"]
|
|
return 0 # not reached
|
|
$$ LANGUAGE plpython3u;
|
|
|
|
CREATE FUNCTION cursor_close_aborted_subxact() RETURNS boolean AS $$
|
|
try:
|
|
with plpy.subtransaction():
|
|
cur = plpy.cursor('select 1')
|
|
plpy.execute("select no_such_function()")
|
|
except plpy.SPIError:
|
|
cur.close()
|
|
return True
|
|
return False # not reached
|
|
$$ LANGUAGE plpython3u;
|
|
|
|
SELECT cursor_in_subxact();
|
|
SELECT cursor_aborted_subxact();
|
|
SELECT cursor_plan_aborted_subxact();
|
|
SELECT cursor_close_aborted_subxact();
|