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Add validator to PL/Python

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Jan Urbański, reviewed by Hitoshi Harada
This commit is contained in:
Peter Eisentraut 2011-02-01 22:53:40 +02:00
parent 6c6e6f7fd3
commit 15f55cc38a
10 changed files with 259 additions and 7 deletions
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2
src/include/catalog/catversion.h
View File

@ -53,6 +53,6 @@
*/
/* yyyymmddN */
#define CATALOG_VERSION_NO 201101251
#define CATALOG_VERSION_NO 201102011
#endif

6
src/include/catalog/pg_pltemplate.h
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@ -72,8 +72,8 @@ DATA(insert ( "pltcl" t t "pltcl_call_handler" _null_ _null_ "$libdir/pltcl" _n
DATA(insert ( "pltclu" f f "pltclu_call_handler" _null_ _null_ "$libdir/pltcl" _null_ ));
DATA(insert ( "plperl" t t "plperl_call_handler" "plperl_inline_handler" "plperl_validator" "$libdir/plperl" _null_ ));
DATA(insert ( "plperlu" f f "plperl_call_handler" "plperl_inline_handler" "plperl_validator" "$libdir/plperl" _null_ ));
DATA(insert ( "plpythonu" f f "plpython_call_handler" "plpython_inline_handler" _null_ "$libdir/plpython" _null_ ));
DATA(insert ( "plpython2u" f f "plpython_call_handler" "plpython_inline_handler" _null_ "$libdir/plpython2" _null_ ));
DATA(insert ( "plpython3u" f f "plpython3_call_handler" "plpython3_inline_handler" _null_ "$libdir/plpython3" _null_ ));
DATA(insert ( "plpythonu" f f "plpython_call_handler" "plpython_inline_handler" "plpython_validator" "$libdir/plpython" _null_ ));
DATA(insert ( "plpython2u" f f "plpython_call_handler" "plpython_inline_handler" "plpython_validator" "$libdir/plpython2" _null_ ));
DATA(insert ( "plpython3u" f f "plpython3_call_handler" "plpython3_inline_handler" "plpython3_validator" "$libdir/plpython3" _null_ ));
#endif /* PG_PLTEMPLATE_H */

2
src/pl/plpython/expected/README
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@ -1,5 +1,7 @@
Guide to alternative expected files:
plpython_error_0.out Python 2.4 and older
plpython_unicode.out any version, when server encoding != SQL_ASCII and client encoding = UTF8; else ...
plpython_unicode_0.out any version, when server encoding != SQL_ASCII and client encoding != UTF8; else ...
plpython_unicode_2.out Python 2.2

24
src/pl/plpython/expected/plpython_error.out
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@ -1,6 +1,30 @@
-- test error handling, i forgot to restore Warn_restart in
-- the trigger handler once. the errors and subsequent core dump were
-- interesting.
/* Flat out Python syntax error
*/
CREATE FUNCTION python_syntax_error() RETURNS text
AS
'.syntaxerror'
LANGUAGE plpythonu;
ERROR: could not compile PL/Python function "python_syntax_error"
DETAIL: SyntaxError: invalid syntax (<string>, line 2)
/* With check_function_bodies = false the function should get defined
* and the error reported when called
*/
SET check_function_bodies = false;
CREATE FUNCTION python_syntax_error() RETURNS text
AS
'.syntaxerror'
LANGUAGE plpythonu;
SELECT python_syntax_error();
ERROR: could not compile PL/Python function "python_syntax_error"
DETAIL: SyntaxError: invalid syntax (<string>, line 2)
/* Run the function twice to check if the hashtable entry gets cleaned up */
SELECT python_syntax_error();
ERROR: could not compile PL/Python function "python_syntax_error"
DETAIL: SyntaxError: invalid syntax (<string>, line 2)
RESET check_function_bodies;
/* Flat out syntax error
*/
CREATE FUNCTION sql_syntax_error() RETURNS text

152
src/pl/plpython/expected/plpython_error_0.out Normal file
View File

@ -0,0 +1,152 @@
-- test error handling, i forgot to restore Warn_restart in
-- the trigger handler once. the errors and subsequent core dump were
-- interesting.
/* Flat out Python syntax error
*/
CREATE FUNCTION python_syntax_error() RETURNS text
AS
'.syntaxerror'
LANGUAGE plpythonu;
ERROR: could not compile PL/Python function "python_syntax_error"
DETAIL: SyntaxError: invalid syntax (line 2)
/* With check_function_bodies = false the function should get defined
* and the error reported when called
*/
SET check_function_bodies = false;
CREATE FUNCTION python_syntax_error() RETURNS text
AS
'.syntaxerror'
LANGUAGE plpythonu;
SELECT python_syntax_error();
ERROR: could not compile PL/Python function "python_syntax_error"
DETAIL: SyntaxError: invalid syntax (line 2)
/* Run the function twice to check if the hashtable entry gets cleaned up */
SELECT python_syntax_error();
ERROR: could not compile PL/Python function "python_syntax_error"
DETAIL: SyntaxError: invalid syntax (line 2)
RESET check_function_bodies;
/* Flat out syntax error
*/
CREATE FUNCTION sql_syntax_error() RETURNS text
AS
'plpy.execute("syntax error")'
LANGUAGE plpythonu;
SELECT sql_syntax_error();
WARNING: plpy.SPIError: unrecognized error in PLy_spi_execute_query
CONTEXT: PL/Python function "sql_syntax_error"
ERROR: plpy.SPIError: syntax error at or near "syntax"
LINE 1: syntax error
^
QUERY: syntax error
CONTEXT: PL/Python function "sql_syntax_error"
/* check the handling of uncaught python exceptions
*/
CREATE FUNCTION exception_index_invalid(text) RETURNS text
AS
'return args[1]'
LANGUAGE plpythonu;
SELECT exception_index_invalid('test');
ERROR: IndexError: list index out of range
CONTEXT: PL/Python function "exception_index_invalid"
/* check handling of nested exceptions
*/
CREATE FUNCTION exception_index_invalid_nested() RETURNS text
AS
'rv = plpy.execute("SELECT test5(''foo'')")
return rv[0]'
LANGUAGE plpythonu;
SELECT exception_index_invalid_nested();
WARNING: plpy.SPIError: unrecognized error in PLy_spi_execute_query
CONTEXT: PL/Python function "exception_index_invalid_nested"
ERROR: plpy.SPIError: function test5(unknown) does not exist
LINE 1: SELECT test5('foo')
^
HINT: No function matches the given name and argument types. You might need to add explicit type casts.
QUERY: SELECT test5('foo')
CONTEXT: PL/Python function "exception_index_invalid_nested"
/* a typo
*/
CREATE FUNCTION invalid_type_uncaught(a text) RETURNS text
AS
'if "plan" not in SD:
q = "SELECT fname FROM users WHERE lname = $1"
SD["plan"] = plpy.prepare(q, [ "test" ])
rv = plpy.execute(SD["plan"], [ a ])
if len(rv):
return rv[0]["fname"]
return None
'
LANGUAGE plpythonu;
SELECT invalid_type_uncaught('rick');
WARNING: plpy.SPIError: unrecognized error in PLy_spi_prepare
CONTEXT: PL/Python function "invalid_type_uncaught"
ERROR: plpy.SPIError: type "test" does not exist
CONTEXT: PL/Python function "invalid_type_uncaught"
/* for what it's worth catch the exception generated by
* the typo, and return None
*/
CREATE FUNCTION invalid_type_caught(a text) RETURNS text
AS
'if "plan" not in SD:
q = "SELECT fname FROM users WHERE lname = $1"
try:
SD["plan"] = plpy.prepare(q, [ "test" ])
except plpy.SPIError, ex:
plpy.notice(str(ex))
return None
rv = plpy.execute(SD["plan"], [ a ])
if len(rv):
return rv[0]["fname"]
return None
'
LANGUAGE plpythonu;
SELECT invalid_type_caught('rick');
WARNING: plpy.SPIError: unrecognized error in PLy_spi_prepare
CONTEXT: PL/Python function "invalid_type_caught"
NOTICE: type "test" does not exist
CONTEXT: PL/Python function "invalid_type_caught"
invalid_type_caught
---------------------
(1 row)
/* for what it's worth catch the exception generated by
* the typo, and reraise it as a plain error
*/
CREATE FUNCTION invalid_type_reraised(a text) RETURNS text
AS
'if "plan" not in SD:
q = "SELECT fname FROM users WHERE lname = $1"
try:
SD["plan"] = plpy.prepare(q, [ "test" ])
except plpy.SPIError, ex:
plpy.error(str(ex))
rv = plpy.execute(SD["plan"], [ a ])
if len(rv):
return rv[0]["fname"]
return None
'
LANGUAGE plpythonu;
SELECT invalid_type_reraised('rick');
WARNING: plpy.SPIError: unrecognized error in PLy_spi_prepare
CONTEXT: PL/Python function "invalid_type_reraised"
ERROR: plpy.Error: type "test" does not exist
CONTEXT: PL/Python function "invalid_type_reraised"
/* no typo no messing about
*/
CREATE FUNCTION valid_type(a text) RETURNS text
AS
'if "plan" not in SD:
SD["plan"] = plpy.prepare("SELECT fname FROM users WHERE lname = $1", [ "text" ])
rv = plpy.execute(SD["plan"], [ a ])
if len(rv):
return rv[0]["fname"]
return None
'
LANGUAGE plpythonu;
SELECT valid_type('rick');
valid_type
------------
(1 row)

6
src/pl/plpython/expected/plpython_record.out
View File

@ -47,6 +47,7 @@ CREATE FUNCTION test_in_out_params_multi(first in text,
second out text, third out text) AS $$
return first + '_record_in_to_out';
$$ LANGUAGE plpythonu;
ERROR: PL/Python functions cannot return type record
CREATE FUNCTION test_inout_params(first inout text) AS $$
return first + '_inout';
$$ LANGUAGE plpythonu;
@ -299,7 +300,10 @@ SELECT * FROM test_in_out_params('test_in');
-- this doesn't work yet :-(
SELECT * FROM test_in_out_params_multi('test_in');
ERROR: PL/Python functions cannot return type record
ERROR: function test_in_out_params_multi(unknown) does not exist
LINE 1: SELECT * FROM test_in_out_params_multi('test_in');
^
HINT: No function matches the given name and argument types. You might need to add explicit type casts.
SELECT * FROM test_inout_params('test_in');
first
---------------

6
src/pl/plpython/expected/plpython_types.out
View File

@ -571,9 +571,13 @@ PL/Python function "test_type_conversion_array_mixed2"
CREATE FUNCTION test_type_conversion_array_record() RETURNS type_record[] AS $$
return [None]
$$ LANGUAGE plpythonu;
SELECT * FROM test_type_conversion_array_record();
ERROR: PL/Python functions cannot return type type_record[]
DETAIL: PL/Python does not support conversion to arrays of row types.
SELECT * FROM test_type_conversion_array_record();
ERROR: function test_type_conversion_array_record() does not exist
LINE 1: SELECT * FROM test_type_conversion_array_record();
^
HINT: No function matches the given name and argument types. You might need to add explicit type casts.
CREATE FUNCTION test_type_conversion_array_string() RETURNS text[] AS $$
return 'abc'
$$ LANGUAGE plpythonu;

6
src/pl/plpython/expected/plpython_types_3.out
View File

@ -571,9 +571,13 @@ PL/Python function "test_type_conversion_array_mixed2"
CREATE FUNCTION test_type_conversion_array_record() RETURNS type_record[] AS $$
return [None]
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_array_record();
ERROR: PL/Python functions cannot return type type_record[]
DETAIL: PL/Python does not support conversion to arrays of row types.
SELECT * FROM test_type_conversion_array_record();
ERROR: function test_type_conversion_array_record() does not exist
LINE 1: SELECT * FROM test_type_conversion_array_record();
^
HINT: No function matches the given name and argument types. You might need to add explicit type casts.
CREATE FUNCTION test_type_conversion_array_string() RETURNS text[] AS $$
return 'abc'
$$ LANGUAGE plpython3u;

39
src/pl/plpython/plpython.c
View File

@ -251,15 +251,18 @@ typedef struct PLyResultObject
#if PY_MAJOR_VERSION >= 3
/* Use separate names to avoid clash in pg_pltemplate */
#define plpython_validator plpython3_validator
#define plpython_call_handler plpython3_call_handler
#define plpython_inline_handler plpython3_inline_handler
#endif
/* exported functions */
Datum plpython_validator(PG_FUNCTION_ARGS);
Datum plpython_call_handler(PG_FUNCTION_ARGS);
Datum plpython_inline_handler(PG_FUNCTION_ARGS);
void _PG_init(void);
PG_FUNCTION_INFO_V1(plpython_validator);
PG_FUNCTION_INFO_V1(plpython_call_handler);
PG_FUNCTION_INFO_V1(plpython_inline_handler);
@ -437,6 +440,42 @@ plpython_return_error_callback(void *arg)
errcontext("while creating return value");
}
static bool
PLy_procedure_is_trigger(Form_pg_proc procStruct)
{
return (procStruct->prorettype == TRIGGEROID ||
(procStruct->prorettype == OPAQUEOID &&
procStruct->pronargs == 0));
}
Datum
plpython_validator(PG_FUNCTION_ARGS)
{
Oid funcoid = PG_GETARG_OID(0);
HeapTuple tuple;
Form_pg_proc procStruct;
bool is_trigger;
if (!check_function_bodies)
{
PG_RETURN_VOID();
}
/* Get the new function's pg_proc entry */
tuple = SearchSysCache1(PROCOID, ObjectIdGetDatum(funcoid));
if (!HeapTupleIsValid(tuple))
elog(ERROR, "cache lookup failed for function %u", funcoid);
procStruct = (Form_pg_proc) GETSTRUCT(tuple);
is_trigger = PLy_procedure_is_trigger(procStruct);
ReleaseSysCache(tuple);
PLy_procedure_get(funcoid, is_trigger);
PG_RETURN_VOID();
}
Datum
plpython_call_handler(PG_FUNCTION_ARGS)
{

23
src/pl/plpython/sql/plpython_error.sql
View File

@ -2,6 +2,29 @@
-- the trigger handler once. the errors and subsequent core dump were
-- interesting.
/* Flat out Python syntax error
*/
CREATE FUNCTION python_syntax_error() RETURNS text
AS
'.syntaxerror'
LANGUAGE plpythonu;
/* With check_function_bodies = false the function should get defined
* and the error reported when called
*/
SET check_function_bodies = false;
CREATE FUNCTION python_syntax_error() RETURNS text
AS
'.syntaxerror'
LANGUAGE plpythonu;
SELECT python_syntax_error();
/* Run the function twice to check if the hashtable entry gets cleaned up */
SELECT python_syntax_error();
RESET check_function_bodies;
/* Flat out syntax error
*/
CREATE FUNCTION sql_syntax_error() RETURNS text