static void dblink_connstr_check(const char *connstr);
static void dblink_security_check(PGconn *conn, remoteConn *rconn);
static void dblink_res_error(PGconn *conn, const char *conname, PGresult *res,
- const char *dblink_context_msg, bool fail);
+ bool fail, const char *fmt,...) pg_attribute_printf(5, 6);
static char *get_connect_string(const char *servername);
static char *escape_param_str(const char *from);
static void validate_pkattnums(Relation rel,
res = PQexec(conn, buf.data);
if (!res || PQresultStatus(res) != PGRES_COMMAND_OK)
{
- dblink_res_error(conn, conname, res, "could not open cursor", fail);
+ dblink_res_error(conn, conname, res, fail,
+ "while opening cursor \"%s\"", curname);
PG_RETURN_TEXT_P(cstring_to_text("ERROR"));
}
res = PQexec(conn, buf.data);
if (!res || PQresultStatus(res) != PGRES_COMMAND_OK)
{
- dblink_res_error(conn, conname, res, "could not close cursor", fail);
+ dblink_res_error(conn, conname, res, fail,
+ "while closing cursor \"%s\"", curname);
PG_RETURN_TEXT_P(cstring_to_text("ERROR"));
}
(PQresultStatus(res) != PGRES_COMMAND_OK &&
PQresultStatus(res) != PGRES_TUPLES_OK))
{
- dblink_res_error(conn, conname, res,
- "could not fetch from cursor", fail);
+ dblink_res_error(conn, conname, res, fail,
+ "while fetching from cursor \"%s\"", curname);
return (Datum) 0;
}
else if (PQresultStatus(res) == PGRES_COMMAND_OK)
if (PQresultStatus(res) != PGRES_COMMAND_OK &&
PQresultStatus(res) != PGRES_TUPLES_OK)
{
- dblink_res_error(conn, conname, res,
- "could not execute query", fail);
+ dblink_res_error(conn, conname, res, fail,
+ "while executing query");
/* if fail isn't set, we'll return an empty query result */
}
else
PGresult *res1 = res;
res = NULL;
- dblink_res_error(conn, conname, res1,
- "could not execute query", fail);
+ dblink_res_error(conn, conname, res1, fail,
+ "while executing query");
/* if fail isn't set, we'll return an empty query result */
}
else if (PQresultStatus(res) == PGRES_COMMAND_OK)
(PQresultStatus(res) != PGRES_COMMAND_OK &&
PQresultStatus(res) != PGRES_TUPLES_OK))
{
- dblink_res_error(conn, conname, res,
- "could not execute command", fail);
+ dblink_res_error(conn, conname, res, fail,
+ "while executing command");
/*
* and save a copy of the command status string to return as our
ereport(ERROR,
(errcode(ERRCODE_FDW_OUT_OF_MEMORY),
errmsg("out of memory"),
- errdetail("could not get libpq's default connection options")));
+ errdetail("Could not get libpq's default connection options.")));
}
/* Validate each supplied option. */
}
}
+/*
+ * Report an error received from the remote server
+ *
+ * res: the received error result (will be freed)
+ * fail: true for ERROR ereport, false for NOTICE
+ * fmt and following args: sprintf-style format and values for errcontext;
+ * the resulting string should be worded like "while <some action>"
+ */
static void
dblink_res_error(PGconn *conn, const char *conname, PGresult *res,
- const char *dblink_context_msg, bool fail)
+ bool fail, const char *fmt,...)
{
int level;
char *pg_diag_sqlstate = PQresultErrorField(res, PG_DIAG_SQLSTATE);
char *message_detail;
char *message_hint;
char *message_context;
- const char *dblink_context_conname = "unnamed";
+ va_list ap;
+ char dblink_context_msg[512];
if (fail)
level = ERROR;
if (message_primary == NULL)
message_primary = pchomp(PQerrorMessage(conn));
+ /*
+ * Now that we've copied all the data we need out of the PGresult, it's
+ * safe to free it. We must do this to avoid PGresult leakage. We're
+ * leaking all the strings too, but those are in palloc'd memory that will
+ * get cleaned up eventually.
+ */
if (res)
PQclear(res);
- if (conname)
- dblink_context_conname = conname;
+ /*
+ * Format the basic errcontext string. Below, we'll add on something
+ * about the connection name. That's a violation of the translatability
+ * guidelines about constructing error messages out of parts, but since
+ * there's no translation support for dblink, there's no need to worry
+ * about that (yet).
+ */
+ va_start(ap, fmt);
+ vsnprintf(dblink_context_msg, sizeof(dblink_context_msg), fmt, ap);
+ va_end(ap);
ereport(level,
(errcode(sqlstate),
errmsg("could not obtain message string for remote error"),
message_detail ? errdetail_internal("%s", message_detail) : 0,
message_hint ? errhint("%s", message_hint) : 0,
- message_context ? errcontext("%s", message_context) : 0,
- errcontext("Error occurred on dblink connection named \"%s\": %s.",
- dblink_context_conname, dblink_context_msg)));
+ message_context ? (errcontext("%s", message_context)) : 0,
+ conname ?
+ (errcontext("%s on dblink connection named \"%s\"",
+ dblink_context_msg, conname)) :
+ (errcontext("%s on unnamed dblink connection",
+ dblink_context_msg))));
}
/*
ereport(ERROR,
(errcode(ERRCODE_FDW_OUT_OF_MEMORY),
errmsg("out of memory"),
- errdetail("could not get libpq's default connection options")));
+ errdetail("Could not get libpq's default connection options.")));
}
/* first gather the server connstr options */
-- open a cursor with bad SQL and fail_on_error set to false
SELECT dblink_open('rmt_foo_cursor','SELECT * FROM foobar',false);
NOTICE: relation "foobar" does not exist
-CONTEXT: Error occurred on dblink connection named "unnamed": could not open cursor.
+CONTEXT: while opening cursor "rmt_foo_cursor" on unnamed dblink connection
dblink_open
-------------
ERROR
SELECT *
FROM dblink_fetch('rmt_foobar_cursor',4,false) AS t(a int, b text, c text[]);
NOTICE: cursor "rmt_foobar_cursor" does not exist
-CONTEXT: Error occurred on dblink connection named "unnamed": could not fetch from cursor.
+CONTEXT: while fetching from cursor "rmt_foobar_cursor" on unnamed dblink connection
a | b | c
---+---+---
(0 rows)
-- close the wrong cursor
SELECT dblink_close('rmt_foobar_cursor',false);
NOTICE: cursor "rmt_foobar_cursor" does not exist
-CONTEXT: Error occurred on dblink connection named "unnamed": could not close cursor.
+CONTEXT: while closing cursor "rmt_foobar_cursor" on unnamed dblink connection
dblink_close
--------------
ERROR
SELECT *
FROM dblink_fetch('rmt_foo_cursor',4) AS t(a int, b text, c text[]);
ERROR: cursor "rmt_foo_cursor" does not exist
-CONTEXT: Error occurred on dblink connection named "unnamed": could not fetch from cursor.
+CONTEXT: while fetching from cursor "rmt_foo_cursor" on unnamed dblink connection
-- this time, 'cursor "rmt_foo_cursor" not found' as a notice
SELECT *
FROM dblink_fetch('rmt_foo_cursor',4,false) AS t(a int, b text, c text[]);
NOTICE: cursor "rmt_foo_cursor" does not exist
-CONTEXT: Error occurred on dblink connection named "unnamed": could not fetch from cursor.
+CONTEXT: while fetching from cursor "rmt_foo_cursor" on unnamed dblink connection
a | b | c
---+---+---
(0 rows)
SELECT *
FROM dblink('SELECT * FROM foobar',false) AS t(a int, b text, c text[]);
NOTICE: relation "foobar" does not exist
-CONTEXT: Error occurred on dblink connection named "unnamed": could not execute query.
+CONTEXT: while executing query on unnamed dblink connection
a | b | c
---+---+---
(0 rows)
-- botch a change to some other data
SELECT dblink_exec('UPDATE foobar SET f3[2] = ''b99'' WHERE f1 = 11',false);
NOTICE: relation "foobar" does not exist
-CONTEXT: Error occurred on dblink connection named "unnamed": could not execute command.
+CONTEXT: while executing command on unnamed dblink connection
dblink_exec
-------------
ERROR
FROM dblink('myconn','SELECT * FROM foobar',false) AS t(a int, b text, c text[])
WHERE t.a > 7;
NOTICE: relation "foobar" does not exist
-CONTEXT: Error occurred on dblink connection named "myconn": could not execute query.
+CONTEXT: while executing query on dblink connection named "myconn"
a | b | c
---+---+---
(0 rows)
-- open a cursor incorrectly
SELECT dblink_open('myconn','rmt_foo_cursor','SELECT * FROM foobar',false);
NOTICE: relation "foobar" does not exist
-CONTEXT: Error occurred on dblink connection named "myconn": could not open cursor.
+CONTEXT: while opening cursor "rmt_foo_cursor" on dblink connection named "myconn"
dblink_open
-------------
ERROR
-- this should fail because there is no open transaction
SELECT dblink_exec('myconn','DECLARE xact_test CURSOR FOR SELECT * FROM foo');
ERROR: DECLARE CURSOR can only be used in transaction blocks
-CONTEXT: Error occurred on dblink connection named "myconn": could not execute command.
+CONTEXT: while executing command on dblink connection named "myconn"
-- reset remote transaction state
SELECT dblink_exec('myconn','ABORT');
dblink_exec
SELECT *
FROM dblink_fetch('myconn','rmt_foobar_cursor',4,false) AS t(a int, b text, c text[]);
NOTICE: cursor "rmt_foobar_cursor" does not exist
-CONTEXT: Error occurred on dblink connection named "myconn": could not fetch from cursor.
+CONTEXT: while fetching from cursor "rmt_foobar_cursor" on dblink connection named "myconn"
a | b | c
---+---+---
(0 rows)
SELECT *
FROM dblink_fetch('myconn','rmt_foo_cursor',4) AS t(a int, b text, c text[]);
ERROR: cursor "rmt_foo_cursor" does not exist
-CONTEXT: Error occurred on dblink connection named "myconn": could not fetch from cursor.
+CONTEXT: while fetching from cursor "rmt_foo_cursor" on dblink connection named "myconn"
-- close the named persistent connection
SELECT dblink_disconnect('myconn');
dblink_disconnect
ereport(ERROR,
(errcode(ERRCODE_SYNTAX_ERROR),
errmsg("conflicting or redundant options"),
- errhint("option \"force_not_null\" supplied more than once for a column")));
+ errhint("Option \"force_not_null\" supplied more than once for a column.")));
force_not_null = def;
/* Don't care what the value is, as long as it's a legal boolean */
(void) defGetBoolean(def);
ereport(ERROR,
(errcode(ERRCODE_SYNTAX_ERROR),
errmsg("conflicting or redundant options"),
- errhint("option \"force_null\" supplied more than once for a column")));
+ errhint("Option \"force_null\" supplied more than once for a column.")));
force_null = def;
(void) defGetBoolean(def);
}
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("generating random data is not supported by this build"),
- errdetail("This functionality requires a source of strong random numbers"),
- errhint("You need to rebuild PostgreSQL using --enable-strong-random")));
+ errdetail("This functionality requires a source of strong random numbers."),
+ errhint("You need to rebuild PostgreSQL using --enable-strong-random.")));
#endif
}
else
message_detail ? errdetail_internal("%s", message_detail) : 0,
message_hint ? errhint("%s", message_hint) : 0,
message_context ? errcontext("%s", message_context) : 0,
- sql ? errcontext("Remote SQL command: %s", sql) : 0));
+ sql ? errcontext("remote SQL command: %s", sql) : 0));
}
PG_CATCH();
{
SAVEPOINT s;
SELECT * FROM ft1 WHERE 1 / (c1 - 1) > 0; -- ERROR
ERROR: division by zero
-CONTEXT: Remote SQL command: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1" WHERE (((1 / ("C 1" - 1)) > 0))
+CONTEXT: remote SQL command: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1" WHERE (((1 / ("C 1" - 1)) > 0))
ROLLBACK TO s;
FETCH c;
c1 | c2 | c3 | c4 | c5 | c6 | c7 | c8
INSERT INTO ft1(c1, c2) VALUES(11, 12); -- duplicate key
ERROR: duplicate key value violates unique constraint "t1_pkey"
DETAIL: Key ("C 1")=(11) already exists.
-CONTEXT: Remote SQL command: INSERT INTO "S 1"."T 1"("C 1", c2, c3, c4, c5, c6, c7, c8) VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
+CONTEXT: remote SQL command: INSERT INTO "S 1"."T 1"("C 1", c2, c3, c4, c5, c6, c7, c8) VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
INSERT INTO ft1(c1, c2) VALUES(11, 12) ON CONFLICT DO NOTHING; -- works
INSERT INTO ft1(c1, c2) VALUES(11, 12) ON CONFLICT (c1, c2) DO NOTHING; -- unsupported
ERROR: there is no unique or exclusion constraint matching the ON CONFLICT specification
INSERT INTO ft1(c1, c2) VALUES(1111, -2); -- c2positive
ERROR: new row for relation "T 1" violates check constraint "c2positive"
DETAIL: Failing row contains (1111, -2, null, null, null, null, ft1 , null).
-CONTEXT: Remote SQL command: INSERT INTO "S 1"."T 1"("C 1", c2, c3, c4, c5, c6, c7, c8) VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
+CONTEXT: remote SQL command: INSERT INTO "S 1"."T 1"("C 1", c2, c3, c4, c5, c6, c7, c8) VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
UPDATE ft1 SET c2 = -c2 WHERE c1 = 1; -- c2positive
ERROR: new row for relation "T 1" violates check constraint "c2positive"
DETAIL: Failing row contains (1, -1, 00001_trig_update, 1970-01-02 08:00:00+00, 1970-01-02 00:00:00, 1, 1 , foo).
-CONTEXT: Remote SQL command: UPDATE "S 1"."T 1" SET c2 = (- c2) WHERE (("C 1" = 1))
+CONTEXT: remote SQL command: UPDATE "S 1"."T 1" SET c2 = (- c2) WHERE (("C 1" = 1))
-- Test savepoint/rollback behavior
select c2, count(*) from ft2 where c2 < 500 group by 1 order by 1;
c2 | count
update ft2 set c2 = -2 where c2 = 42 and c1 = 10; -- fail on remote side
ERROR: new row for relation "T 1" violates check constraint "c2positive"
DETAIL: Failing row contains (10, -2, 00010_trig_update_trig_update, 1970-01-11 08:00:00+00, 1970-01-11 00:00:00, 0, 0 , foo).
-CONTEXT: Remote SQL command: UPDATE "S 1"."T 1" SET c2 = (-2) WHERE ((c2 = 42)) AND (("C 1" = 10))
+CONTEXT: remote SQL command: UPDATE "S 1"."T 1" SET c2 = (-2) WHERE ((c2 = 42)) AND (("C 1" = 10))
rollback to savepoint s3;
select c2, count(*) from ft2 where c2 < 500 group by 1 order by 1;
c2 | count
INSERT INTO ft1(c1, c2) VALUES(1111, -2); -- c2positive
ERROR: new row for relation "T 1" violates check constraint "c2positive"
DETAIL: Failing row contains (1111, -2, null, null, null, null, ft1 , null).
-CONTEXT: Remote SQL command: INSERT INTO "S 1"."T 1"("C 1", c2, c3, c4, c5, c6, c7, c8) VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
+CONTEXT: remote SQL command: INSERT INTO "S 1"."T 1"("C 1", c2, c3, c4, c5, c6, c7, c8) VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
UPDATE ft1 SET c2 = -c2 WHERE c1 = 1; -- c2positive
ERROR: new row for relation "T 1" violates check constraint "c2positive"
DETAIL: Failing row contains (1, -1, 00001_trig_update, 1970-01-02 08:00:00+00, 1970-01-02 00:00:00, 1, 1 , foo).
-CONTEXT: Remote SQL command: UPDATE "S 1"."T 1" SET c2 = (- c2) WHERE (("C 1" = 1))
+CONTEXT: remote SQL command: UPDATE "S 1"."T 1" SET c2 = (- c2) WHERE (("C 1" = 1))
ALTER FOREIGN TABLE ft1 DROP CONSTRAINT ft1_c2positive;
-- But inconsistent check constraints provide inconsistent results
ALTER FOREIGN TABLE ft1 ADD CONSTRAINT ft1_c2negative CHECK (c2 < 0);
ereport(ERROR,
(errcode(ERRCODE_FDW_OUT_OF_MEMORY),
errmsg("out of memory"),
- errdetail("could not get libpq's default connection options")));
+ errdetail("Could not get libpq's default connection options.")));
/* Count how many libpq options are available. */
num_libpq_opts = 0;
ereport((log_checkpoints ? LOG : DEBUG2),
(errmsg("recovery restart point at %X/%X",
(uint32) (lastCheckPoint.redo >> 32), (uint32) lastCheckPoint.redo),
- xtime ? errdetail("last completed transaction was at log time %s",
+ xtime ? errdetail("Last completed transaction was at log time %s.",
timestamptz_to_str(xtime)) : 0));
LWLockRelease(CheckpointLock);
ereport(LOG,
(errmsg("starting logical decoding for slot \"%s\"",
NameStr(slot->data.name)),
- errdetail("streaming transactions committing after %X/%X, reading WAL from %X/%X",
+ errdetail("Streaming transactions committing after %X/%X, reading WAL from %X/%X.",
(uint32) (slot->data.confirmed_flush >> 32),
(uint32) slot->data.confirmed_flush,
(uint32) (slot->data.restart_lsn >> 32),
projects / postgresql.git / commitdiff