/*
This file is part of GNUnet
- (C) 2009, 2010, 2011 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2009-2016 GNUnet e.V.
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
*/
/**
#include "platform.h"
#include "gnunet_datastore_plugin.h"
-#include <postgresql/libpq-fe.h>
+#include "gnunet_postgres_lib.h"
+#include "gnunet_pq_lib.h"
-#define DEBUG_POSTGRES GNUNET_NO
/**
* After how many ms "busy" should a DB operation fail for good?
/**
* Context for all functions in this plugin.
*/
-struct Plugin
+struct Plugin
{
/**
* Our execution environment.
};
-/**
- * Check if the result obtained from Postgres has
- * the desired status code. If not, log an error, clear the
- * result and return GNUNET_SYSERR.
- *
- * @param plugin global context
- * @param ret result to check
- * @param expected_status expected return value
- * @param command name of SQL command that was run
- * @param args arguments to SQL command
- * @param line line number for error reporting
- * @return GNUNET_OK if the result is acceptable
- */
-static int
-check_result (struct Plugin *plugin,
- PGresult * ret,
- int expected_status,
- const char *command, const char *args, int line)
-{
- if (ret == NULL)
- {
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
- "datastore-postgres",
- "Postgres failed to allocate result for `%s:%s' at %d\n",
- command, args, line);
- return GNUNET_SYSERR;
- }
- if (PQresultStatus (ret) != expected_status)
- {
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
- "datastore-postgres",
- _("`%s:%s' failed at %s:%d with error: %s"),
- command, args, __FILE__, line, PQerrorMessage (plugin->dbh));
- PQclear (ret);
- return GNUNET_SYSERR;
- }
- return GNUNET_OK;
-}
-
-/**
- * Run simple SQL statement (without results).
- *
- * @param plugin global context
- * @param sql statement to run
- * @param line code line for error reporting
- */
-static int
-pq_exec (struct Plugin *plugin,
- const char *sql, int line)
-{
- PGresult *ret;
- ret = PQexec (plugin->dbh, sql);
- if (GNUNET_OK != check_result (plugin,
- ret,
- PGRES_COMMAND_OK, "PQexec", sql, line))
- return GNUNET_SYSERR;
- PQclear (ret);
- return GNUNET_OK;
-}
-
-/**
- * Prepare SQL statement.
- *
- * @param plugin global context
- * @param name name for the prepared SQL statement
- * @param sql SQL code to prepare
- * @param nparams number of parameters in sql
- * @param line code line for error reporting
- * @return GNUNET_OK on success
- */
-static int
-pq_prepare (struct Plugin *plugin,
- const char *name, const char *sql, int nparams, int line)
-{
- PGresult *ret;
- ret = PQprepare (plugin->dbh, name, sql, nparams, NULL);
- if (GNUNET_OK !=
- check_result (plugin,
- ret, PGRES_COMMAND_OK, "PQprepare", sql, line))
- return GNUNET_SYSERR;
- PQclear (ret);
- return GNUNET_OK;
-}
-
/**
* @brief Get a database handle
*
* @param plugin global context
- * @return GNUNET_OK on success, GNUNET_SYSERR on error
+ * @return #GNUNET_OK on success, #GNUNET_SYSERR on error
*/
static int
init_connection (struct Plugin *plugin)
{
- char *conninfo;
PGresult *ret;
- /* Open database and precompile statements */
- conninfo = NULL;
- GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg,
- "datastore-postgres",
- "CONFIG",
- &conninfo);
- plugin->dbh = PQconnectdb (conninfo == NULL ? "" : conninfo);
+ plugin->dbh = GNUNET_POSTGRES_connect (plugin->env->cfg, "datastore-postgres");
if (NULL == plugin->dbh)
- {
- /* FIXME: warn about out-of-memory? */
- GNUNET_free_non_null (conninfo);
- return GNUNET_SYSERR;
- }
- if (PQstatus (plugin->dbh) != CONNECTION_OK)
- {
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
- "datastore-postgres",
- _("Unable to initialize Postgres with configuration `%s': %s"),
- conninfo,
- PQerrorMessage (plugin->dbh));
- PQfinish (plugin->dbh);
- plugin->dbh = NULL;
- GNUNET_free_non_null (conninfo);
- return GNUNET_SYSERR;
- }
- GNUNET_free_non_null (conninfo);
- ret = PQexec (plugin->dbh,
- "CREATE TABLE gn090 ("
- " repl INTEGER NOT NULL DEFAULT 0,"
- " type INTEGER NOT NULL DEFAULT 0,"
- " prio INTEGER NOT NULL DEFAULT 0,"
- " anonLevel INTEGER NOT NULL DEFAULT 0,"
- " expire BIGINT NOT NULL DEFAULT 0,"
- " hash BYTEA NOT NULL DEFAULT '',"
- " vhash BYTEA NOT NULL DEFAULT '',"
- " value BYTEA NOT NULL DEFAULT '')" "WITH OIDS");
- if ( (ret == NULL) ||
- ( (PQresultStatus (ret) != PGRES_COMMAND_OK) &&
- (0 != strcmp ("42P07", /* duplicate table */
- PQresultErrorField
- (ret,
- PG_DIAG_SQLSTATE)))))
- {
- (void) check_result (plugin,
- ret, PGRES_COMMAND_OK, "CREATE TABLE", "gn090", __LINE__);
- PQfinish (plugin->dbh);
- plugin->dbh = NULL;
- return GNUNET_SYSERR;
- }
+ return GNUNET_SYSERR;
+
+ ret =
+ PQexec (plugin->dbh,
+ "CREATE TABLE gn090 ("
+ " repl INTEGER NOT NULL DEFAULT 0,"
+ " type INTEGER NOT NULL DEFAULT 0,"
+ " prio INTEGER NOT NULL DEFAULT 0,"
+ " anonLevel INTEGER NOT NULL DEFAULT 0,"
+ " expire BIGINT NOT NULL DEFAULT 0,"
+ " rvalue BIGINT NOT NULL DEFAULT 0,"
+ " hash BYTEA NOT NULL DEFAULT '',"
+ " vhash BYTEA NOT NULL DEFAULT '',"
+ " value BYTEA NOT NULL DEFAULT '')"
+ "WITH OIDS");
+ if ( (NULL == ret) ||
+ ((PQresultStatus (ret) != PGRES_COMMAND_OK) &&
+ (0 != strcmp ("42P07", /* duplicate table */
+ PQresultErrorField
+ (ret,
+ PG_DIAG_SQLSTATE)))))
+ {
+ (void) GNUNET_POSTGRES_check_result (plugin->dbh,
+ ret,
+ PGRES_COMMAND_OK,
+ "CREATE TABLE",
+ "gn090");
+ PQfinish (plugin->dbh);
+ plugin->dbh = NULL;
+ return GNUNET_SYSERR;
+ }
+
if (PQresultStatus (ret) == PGRES_COMMAND_OK)
+ {
+ if ((GNUNET_OK !=
+ GNUNET_POSTGRES_exec (plugin->dbh, "CREATE INDEX idx_hash ON gn090 (hash)")) ||
+ (GNUNET_OK !=
+ GNUNET_POSTGRES_exec (plugin->dbh, "CREATE INDEX idx_hash_vhash ON gn090 (hash,vhash)")) ||
+ (GNUNET_OK !=
+ GNUNET_POSTGRES_exec (plugin->dbh, "CREATE INDEX idx_prio ON gn090 (prio)")) ||
+ (GNUNET_OK !=
+ GNUNET_POSTGRES_exec (plugin->dbh, "CREATE INDEX idx_expire ON gn090 (expire)")) ||
+ (GNUNET_OK !=
+ GNUNET_POSTGRES_exec (plugin->dbh,
+ "CREATE INDEX idx_prio_anon ON gn090 (prio,anonLevel)")) ||
+ (GNUNET_OK !=
+ GNUNET_POSTGRES_exec (plugin->dbh,
+ "CREATE INDEX idx_prio_hash_anon ON gn090 (prio,hash,anonLevel)")) ||
+ (GNUNET_OK !=
+ GNUNET_POSTGRES_exec (plugin->dbh, "CREATE INDEX idx_repl_rvalue ON gn090 (repl,rvalue)")) ||
+ (GNUNET_OK !=
+ GNUNET_POSTGRES_exec (plugin->dbh, "CREATE INDEX idx_expire_hash ON gn090 (expire,hash)")))
{
- if ((GNUNET_OK !=
- pq_exec (plugin, "CREATE INDEX idx_hash ON gn090 (hash)", __LINE__)) ||
- (GNUNET_OK !=
- pq_exec (plugin, "CREATE INDEX idx_hash_vhash ON gn090 (hash,vhash)",
- __LINE__))
- || (GNUNET_OK !=
- pq_exec (plugin, "CREATE INDEX idx_prio ON gn090 (prio)", __LINE__))
- || (GNUNET_OK !=
- pq_exec (plugin, "CREATE INDEX idx_expire ON gn090 (expire)", __LINE__))
- || (GNUNET_OK !=
- pq_exec (plugin, "CREATE INDEX idx_comb3 ON gn090 (prio,anonLevel)",
- __LINE__))
- || (GNUNET_OK !=
- pq_exec
- (plugin, "CREATE INDEX idx_comb4 ON gn090 (prio,hash,anonLevel)",
- __LINE__))
- || (GNUNET_OK !=
- pq_exec (plugin, "CREATE INDEX idx_comb7 ON gn090 (expire,hash)",
- __LINE__)))
- {
- PQclear (ret);
- PQfinish (plugin->dbh);
- plugin->dbh = NULL;
- return GNUNET_SYSERR;
- }
- }
- PQclear (ret);
- ret = PQexec (plugin->dbh,
- "ALTER TABLE gn090 ALTER value SET STORAGE EXTERNAL");
- if (GNUNET_OK !=
- check_result (plugin,
- ret, PGRES_COMMAND_OK,
- "ALTER TABLE", "gn090", __LINE__))
- {
+ PQclear (ret);
PQfinish (plugin->dbh);
plugin->dbh = NULL;
return GNUNET_SYSERR;
}
+ }
PQclear (ret);
- ret = PQexec (plugin->dbh,
- "ALTER TABLE gn090 ALTER hash SET STORAGE PLAIN");
+
+ ret =
+ PQexec (plugin->dbh,
+ "ALTER TABLE gn090 ALTER value SET STORAGE EXTERNAL");
if (GNUNET_OK !=
- check_result (plugin,
- ret, PGRES_COMMAND_OK,
- "ALTER TABLE", "gn090", __LINE__))
- {
- PQfinish (plugin->dbh);
- plugin->dbh = NULL;
- return GNUNET_SYSERR;
- }
+ GNUNET_POSTGRES_check_result (plugin->dbh, ret, PGRES_COMMAND_OK, "ALTER TABLE", "gn090"))
+ {
+ PQfinish (plugin->dbh);
+ plugin->dbh = NULL;
+ return GNUNET_SYSERR;
+ }
PQclear (ret);
- ret = PQexec (plugin->dbh,
- "ALTER TABLE gn090 ALTER vhash SET STORAGE PLAIN");
+ ret = PQexec (plugin->dbh, "ALTER TABLE gn090 ALTER hash SET STORAGE PLAIN");
if (GNUNET_OK !=
- check_result (plugin,
- ret, PGRES_COMMAND_OK, "ALTER TABLE", "gn090", __LINE__))
- {
- PQfinish (plugin->dbh);
- plugin->dbh = NULL;
- return GNUNET_SYSERR;
- }
+ GNUNET_POSTGRES_check_result (plugin->dbh, ret, PGRES_COMMAND_OK, "ALTER TABLE", "gn090"))
+ {
+ PQfinish (plugin->dbh);
+ plugin->dbh = NULL;
+ return GNUNET_SYSERR;
+ }
+ PQclear (ret);
+ ret = PQexec (plugin->dbh, "ALTER TABLE gn090 ALTER vhash SET STORAGE PLAIN");
+ if (GNUNET_OK !=
+ GNUNET_POSTGRES_check_result (plugin->dbh, ret, PGRES_COMMAND_OK, "ALTER TABLE", "gn090"))
+ {
+ PQfinish (plugin->dbh);
+ plugin->dbh = NULL;
+ return GNUNET_SYSERR;
+ }
PQclear (ret);
if ((GNUNET_OK !=
- pq_prepare (plugin,
- "getvt",
+ GNUNET_POSTGRES_prepare (plugin->dbh, "getvt",
"SELECT type, prio, anonLevel, expire, hash, value, oid FROM gn090 "
"WHERE hash=$1 AND vhash=$2 AND type=$3 "
- "ORDER BY oid ASC LIMIT 1 OFFSET $4",
- 4,
- __LINE__)) ||
+ "ORDER BY oid ASC LIMIT 1 OFFSET $4", 4)) ||
(GNUNET_OK !=
- pq_prepare (plugin,
- "gett",
+ GNUNET_POSTGRES_prepare (plugin->dbh, "gett",
"SELECT type, prio, anonLevel, expire, hash, value, oid FROM gn090 "
"WHERE hash=$1 AND type=$2 "
- "ORDER BY oid ASC LIMIT 1 OFFSET $3",
- 3,
- __LINE__)) ||
+ "ORDER BY oid ASC LIMIT 1 OFFSET $3", 3)) ||
(GNUNET_OK !=
- pq_prepare (plugin,
- "getv",
+ GNUNET_POSTGRES_prepare (plugin->dbh, "getv",
"SELECT type, prio, anonLevel, expire, hash, value, oid FROM gn090 "
"WHERE hash=$1 AND vhash=$2 "
- "ORDER BY oid ASC LIMIT 1 OFFSET $3",
- 3,
- __LINE__)) ||
+ "ORDER BY oid ASC LIMIT 1 OFFSET $3", 3)) ||
(GNUNET_OK !=
- pq_prepare (plugin,
- "get",
+ GNUNET_POSTGRES_prepare (plugin->dbh, "get",
"SELECT type, prio, anonLevel, expire, hash, value, oid FROM gn090 "
- "WHERE hash=$1 "
- "ORDER BY oid ASC LIMIT 1 OFFSET $2",
- 2,
- __LINE__)) ||
+ "WHERE hash=$1 " "ORDER BY oid ASC LIMIT 1 OFFSET $2", 2)) ||
+ (GNUNET_OK !=
+ GNUNET_POSTGRES_prepare (plugin->dbh, "count_getvt",
+ "SELECT count(*) FROM gn090 WHERE hash=$1 AND vhash=$2 AND type=$3", 3)) ||
+ (GNUNET_OK !=
+ GNUNET_POSTGRES_prepare (plugin->dbh, "count_gett",
+ "SELECT count(*) FROM gn090 WHERE hash=$1 AND type=$2", 2)) ||
+ (GNUNET_OK !=
+ GNUNET_POSTGRES_prepare (plugin->dbh, "count_getv",
+ "SELECT count(*) FROM gn090 WHERE hash=$1 AND vhash=$2", 2)) ||
+ (GNUNET_OK !=
+ GNUNET_POSTGRES_prepare (plugin->dbh, "count_get",
+ "SELECT count(*) FROM gn090 WHERE hash=$1", 1)) ||
(GNUNET_OK !=
- pq_prepare (plugin,
- "put",
- "INSERT INTO gn090 (repl, type, prio, anonLevel, expire, hash, vhash, value) "
- "VALUES ($1, $2, $3, $4, $5, $6, $7, $8)",
- 8,
- __LINE__)) ||
+ GNUNET_POSTGRES_prepare (plugin->dbh, "put",
+ "INSERT INTO gn090 (repl, type, prio, anonLevel, expire, rvalue, hash, vhash, value) "
+ "VALUES ($1, $2, $3, $4, $5, RANDOM(), $6, $7, $8)", 9)) ||
(GNUNET_OK !=
- pq_prepare (plugin,
- "update",
+ GNUNET_POSTGRES_prepare (plugin->dbh, "update",
"UPDATE gn090 SET prio = prio + $1, expire = CASE WHEN expire < $2 THEN $2 ELSE expire END "
- "WHERE oid = $3",
- 3,
- __LINE__)) ||
+ "WHERE oid = $3", 3)) ||
(GNUNET_OK !=
- pq_prepare (plugin,
- "decrepl",
+ GNUNET_POSTGRES_prepare (plugin->dbh, "decrepl",
"UPDATE gn090 SET repl = GREATEST (repl - 1, 0) "
- "WHERE oid = $1",
- 1,
- __LINE__)) ||
+ "WHERE oid = $1", 1)) ||
(GNUNET_OK !=
- pq_prepare (plugin,
- "select_non_anonymous",
- "SELECT type, prio, anonLevel, expire, hash, value, oid FROM gn090 "
- "WHERE anonLevel = 0 AND type = $1 ORDER BY oid DESC LIMIT 1 OFFSET $2",
- 1,
- __LINE__)) ||
+ GNUNET_POSTGRES_prepare (plugin->dbh, "select_non_anonymous",
+ "SELECT type, prio, anonLevel, expire, hash, value, oid FROM gn090 "
+ "WHERE anonLevel = 0 AND type = $1 ORDER BY oid DESC LIMIT 1 OFFSET $2",
+ 1)) ||
(GNUNET_OK !=
- pq_prepare (plugin,
- "select_expiration_order",
- "(SELECT type, prio, anonLevel, expire, hash, value, oid FROM gn090 "
- "WHERE expire < $1 ORDER BY prio ASC LIMIT 1) "
- "UNION "
- "(SELECT type, prio, anonLevel, expire, hash, value, oid FROM gn090 "
- "ORDER BY prio ASC LIMIT 1) "
- "ORDER BY expire ASC LIMIT 1",
- 1,
- __LINE__)) ||
+ GNUNET_POSTGRES_prepare (plugin->dbh, "select_expiration_order",
+ "(SELECT type, prio, anonLevel, expire, hash, value, oid FROM gn090 "
+ "WHERE expire < $1 ORDER BY prio ASC LIMIT 1) " "UNION "
+ "(SELECT type, prio, anonLevel, expire, hash, value, oid FROM gn090 "
+ "ORDER BY prio ASC LIMIT 1) " "ORDER BY expire ASC LIMIT 1",
+ 1)) ||
(GNUNET_OK !=
- pq_prepare (plugin,
- "select_replication_order",
- "SELECT type, prio, anonLevel, expire, hash, value, oid FROM gn090 " \
- "ORDER BY repl DESC,RANDOM() LIMIT 1",
- 0,
- __LINE__)) ||
+ GNUNET_POSTGRES_prepare (plugin->dbh, "select_replication_order",
+ "SELECT type, prio, anonLevel, expire, hash, value, oid FROM gn090 "
+ "ORDER BY repl DESC,RANDOM() LIMIT 1", 0)) ||
(GNUNET_OK !=
- pq_prepare (plugin,
- "delrow",
- "DELETE FROM gn090 " "WHERE oid=$1",
- 1,
- __LINE__)))
- {
- PQfinish (plugin->dbh);
- plugin->dbh = NULL;
- return GNUNET_SYSERR;
- }
- return GNUNET_OK;
-}
-
-
-/**
- * Delete the row identified by the given rowid (qid
- * in postgres).
- *
- * @param plugin global context
- * @param rowid which row to delete
- * @return GNUNET_OK on success
- */
-static int
-delete_by_rowid (struct Plugin *plugin,
- unsigned int rowid)
-{
- uint32_t browid;
- const char *paramValues[] = { (const char *) &browid };
- int paramLengths[] = { sizeof (browid) };
- const int paramFormats[] = { 1 };
- PGresult *ret;
-
- browid = htonl (rowid);
- ret = PQexecPrepared (plugin->dbh,
- "delrow",
- 1, paramValues, paramLengths, paramFormats, 1);
- if (GNUNET_OK !=
- check_result (plugin,
- ret, PGRES_COMMAND_OK, "PQexecPrepared", "delrow",
- __LINE__))
- {
- return GNUNET_SYSERR;
- }
- PQclear (ret);
+ GNUNET_POSTGRES_prepare (plugin->dbh, "delrow", "DELETE FROM gn090 " "WHERE oid=$1", 1)) ||
+ (GNUNET_OK !=
+ GNUNET_POSTGRES_prepare (plugin->dbh, "get_keys", "SELECT hash FROM gn090", 0)))
+ {
+ PQfinish (plugin->dbh);
+ plugin->dbh = NULL;
+ return GNUNET_SYSERR;
+ }
return GNUNET_OK;
}
* Get an estimate of how much space the database is
* currently using.
*
- * @param cls our "struct Plugin*"
+ * @param cls our `struct Plugin *`
* @return number of bytes used on disk
*/
-static unsigned long long
-postgres_plugin_estimate_size (void *cls)
+static void
+postgres_plugin_estimate_size (void *cls, unsigned long long *estimate)
{
struct Plugin *plugin = cls;
unsigned long long total;
PGresult *ret;
- ret = PQexecParams (plugin->dbh,
- "SELECT SUM(LENGTH(value))+256*COUNT(*) FROM gn090",
- 0, NULL, NULL, NULL, NULL, 1);
- if (GNUNET_OK != check_result (plugin,
- ret,
- PGRES_TUPLES_OK,
- "PQexecParams",
- "get_size",
- __LINE__))
- {
- return 0;
- }
- if ((PQntuples (ret) != 1) ||
- (PQnfields (ret) != 1) ||
- (PQgetlength (ret, 0, 0) != sizeof (unsigned long long)))
- {
- GNUNET_break (0);
- PQclear (ret);
- return 0;
- }
+ if (NULL == estimate)
+ return;
+ ret =
+ PQexecParams (plugin->dbh,
+ "SELECT SUM(LENGTH(value))+256*COUNT(*) FROM gn090", 0,
+ NULL, NULL, NULL, NULL, 1);
+ if (GNUNET_OK !=
+ GNUNET_POSTGRES_check_result (plugin->dbh,
+ ret,
+ PGRES_TUPLES_OK,
+ "PQexecParams",
+ "get_size"))
+ {
+ *estimate = 0;
+ return;
+ }
+ if ((PQntuples (ret) != 1) || (PQnfields (ret) != 1) )
+ {
+ GNUNET_break (0);
+ PQclear (ret);
+ *estimate = 0;
+ return;
+ }
+ if (PQgetlength (ret, 0, 0) != sizeof (unsigned long long))
+ {
+ GNUNET_break (0 == PQgetlength (ret, 0, 0));
+ PQclear (ret);
+ *estimate = 0;
+ return;
+ }
total = GNUNET_ntohll (*(const unsigned long long *) PQgetvalue (ret, 0, 0));
PQclear (ret);
- return total;
+ *estimate = total;
}
/**
* Store an item in the datastore.
*
- * @param cls closure
+ * @param cls closure with the `struct Plugin`
* @param key key for the item
* @param size number of bytes in data
* @param data content stored
* @param anonymity anonymity-level for the content
* @param replication replication-level for the content
* @param expiration expiration time for the content
- * @param msg set to error message
- * @return GNUNET_OK on success
+ * @param cont continuation called with success or failure status
+ * @param cont_cls continuation closure
*/
-static int
+static void
postgres_plugin_put (void *cls,
- const GNUNET_HashCode * key,
+ const struct GNUNET_HashCode *key,
uint32_t size,
- const void *data,
+ const void *data,
enum GNUNET_BLOCK_Type type,
- uint32_t priority,
+ uint32_t priority,
uint32_t anonymity,
- uint32_t replication,
- struct GNUNET_TIME_Absolute expiration,
- char **msg)
+ uint32_t replication,
+ struct GNUNET_TIME_Absolute expiration,
+ PluginPutCont cont,
+ void *cont_cls)
{
struct Plugin *plugin = cls;
- GNUNET_HashCode vhash;
+ uint32_t utype = type;
+ struct GNUNET_HashCode vhash;
PGresult *ret;
- uint32_t btype = htonl (type);
- uint32_t bprio = htonl (priority);
- uint32_t banon = htonl (anonymity);
- uint32_t brepl = htonl (replication);
- uint64_t bexpi = GNUNET_TIME_absolute_hton (expiration).abs_value__;
- const char *paramValues[] = {
- (const char *) &brepl,
- (const char *) &btype,
- (const char *) &bprio,
- (const char *) &banon,
- (const char *) &bexpi,
- (const char *) key,
- (const char *) &vhash,
- (const char *) data
+ struct GNUNET_PQ_QueryParam params[] = {
+ GNUNET_PQ_query_param_uint32 (&replication),
+ GNUNET_PQ_query_param_uint32 (&utype),
+ GNUNET_PQ_query_param_uint32 (&priority),
+ GNUNET_PQ_query_param_uint32 (&anonymity),
+ GNUNET_PQ_query_param_absolute_time (&expiration),
+ GNUNET_PQ_query_param_auto_from_type (key),
+ GNUNET_PQ_query_param_auto_from_type (&vhash),
+ GNUNET_PQ_query_param_fixed_size (data, size),
+ GNUNET_PQ_query_param_end
};
- int paramLengths[] = {
- sizeof (brepl),
- sizeof (btype),
- sizeof (bprio),
- sizeof (banon),
- sizeof (bexpi),
- sizeof (GNUNET_HashCode),
- sizeof (GNUNET_HashCode),
- size
- };
- const int paramFormats[] = { 1, 1, 1, 1, 1, 1, 1, 1 };
GNUNET_CRYPTO_hash (data, size, &vhash);
- ret = PQexecPrepared (plugin->dbh,
- "put", 8, paramValues, paramLengths, paramFormats, 1);
- if (GNUNET_OK != check_result (plugin, ret,
- PGRES_COMMAND_OK,
- "PQexecPrepared", "put", __LINE__))
- return GNUNET_SYSERR;
+ ret = GNUNET_PQ_exec_prepared (plugin->dbh,
+ "put",
+ params);
+ if (GNUNET_OK !=
+ GNUNET_POSTGRES_check_result (plugin->dbh,
+ ret,
+ PGRES_COMMAND_OK,
+ "PQexecPrepared", "put"))
+ {
+ cont (cont_cls, key, size,
+ GNUNET_SYSERR,
+ _("Postgress exec failure"));
+ return;
+ }
PQclear (ret);
- plugin->env->duc (plugin->env->cls, size + GNUNET_DATASTORE_ENTRY_OVERHEAD);
-#if DEBUG_POSTGRES
+ plugin->env->duc (plugin->env->cls,
+ size + GNUNET_DATASTORE_ENTRY_OVERHEAD);
GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
"datastore-postgres",
- "Stored %u bytes in database\n",
+ "Stored %u bytes in database\n",
(unsigned int) size);
-#endif
- return GNUNET_OK;
+ cont (cont_cls, key, size, GNUNET_OK, NULL);
}
/**
- * Function invoked to process the result and call
- * the processor.
+ * Function invoked to process the result and call the processor.
*
* @param plugin global plugin data
* @param proc function to call the value (once only).
* @param proc_cls closure for proc
* @param res result from exec
+ * @param filename filename for error messages
+ * @param line line number for error messages
*/
-static void
+static void
process_result (struct Plugin *plugin,
- PluginDatumProcessor proc, void *proc_cls,
- PGresult *res,
- int line)
+ PluginDatumProcessor proc,
+ void *proc_cls,
+ PGresult * res,
+ const char *filename, int line)
{
int iret;
- enum GNUNET_BLOCK_Type type;
+ uint32_t rowid;
+ uint32_t utype;
uint32_t anonymity;
uint32_t priority;
- uint32_t size;
- unsigned int rowid;
+ size_t size;
+ void *data;
struct GNUNET_TIME_Absolute expiration_time;
- GNUNET_HashCode key;
-
- if (GNUNET_OK != check_result (plugin,
- res,
- PGRES_TUPLES_OK,
- "PQexecPrepared",
- "select",
- line))
- {
-#if DEBUG_POSTGRES
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
- "datastore-postgres",
- "Ending iteration (postgres error)\n");
-#endif
- proc (proc_cls,
- NULL, 0, NULL, 0, 0, 0,
- GNUNET_TIME_UNIT_ZERO_ABS, 0);
- return;
- }
+ struct GNUNET_HashCode key;
+ struct GNUNET_PQ_ResultSpec rs[] = {
+ GNUNET_PQ_result_spec_uint32 ("type", &utype),
+ GNUNET_PQ_result_spec_uint32 ("prio", &priority),
+ GNUNET_PQ_result_spec_uint32 ("anonLevel", &anonymity),
+ GNUNET_PQ_result_spec_uint32 ("oid", &rowid),
+ GNUNET_PQ_result_spec_absolute_time ("expire", &expiration_time),
+ GNUNET_PQ_result_spec_auto_from_type ("hash", &key),
+ GNUNET_PQ_result_spec_variable_size ("value", &data, &size),
+ GNUNET_PQ_result_spec_end
+ };
+
+ if (GNUNET_OK !=
+ GNUNET_POSTGRES_check_result_ (plugin->dbh,
+ res,
+ PGRES_TUPLES_OK,
+ "PQexecPrepared",
+ "select",
+ filename, line))
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
+ "datastore-postgres",
+ "Ending iteration (postgres error)\n");
+ proc (proc_cls, NULL, 0, NULL, 0, 0, 0,
+ GNUNET_TIME_UNIT_ZERO_ABS, 0);
+ return;
+ }
if (0 == PQntuples (res))
- {
- /* no result */
-#if DEBUG_POSTGRES
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
- "datastore-postgres",
- "Ending iteration (no more results)\n");
-#endif
- proc (proc_cls,
- NULL, 0, NULL, 0, 0, 0,
- GNUNET_TIME_UNIT_ZERO_ABS, 0);
- PQclear (res);
- return;
- }
- if ((1 != PQntuples (res)) ||
- (7 != PQnfields (res)) ||
- (sizeof (uint32_t) != PQfsize (res, 0)) ||
- (sizeof (uint32_t) != PQfsize (res, 6)))
- {
- GNUNET_break (0);
- proc (proc_cls,
- NULL, 0, NULL, 0, 0, 0,
- GNUNET_TIME_UNIT_ZERO_ABS, 0);
- PQclear (res);
- return;
- }
- rowid = ntohl (*(uint32_t *) PQgetvalue (res, 0, 6));
- if ((sizeof (uint32_t) != PQfsize (res, 0)) ||
- (sizeof (uint32_t) != PQfsize (res, 1)) ||
- (sizeof (uint32_t) != PQfsize (res, 2)) ||
- (sizeof (uint64_t) != PQfsize (res, 3)) ||
- (sizeof (GNUNET_HashCode) != PQgetlength (res, 0, 4)) )
- {
- GNUNET_break (0);
- PQclear (res);
- delete_by_rowid (plugin, rowid);
- proc (proc_cls,
- NULL, 0, NULL, 0, 0, 0,
- GNUNET_TIME_UNIT_ZERO_ABS, 0);
- return;
- }
+ {
+ /* no result */
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
+ "datastore-postgres",
+ "Ending iteration (no more results)\n");
+ proc (proc_cls, NULL, 0, NULL, 0, 0, 0,
+ GNUNET_TIME_UNIT_ZERO_ABS, 0);
+ PQclear (res);
+ return;
+ }
+ if (1 != PQntuples (res))
+ {
+ GNUNET_break (0);
+ proc (proc_cls, NULL, 0, NULL, 0, 0, 0,
+ GNUNET_TIME_UNIT_ZERO_ABS, 0);
+ PQclear (res);
+ return;
+ }
+ if (GNUNET_OK !=
+ GNUNET_PQ_extract_result (res,
+ rs,
+ 0))
+ {
+ GNUNET_break (0);
+ PQclear (res);
+ GNUNET_POSTGRES_delete_by_rowid (plugin->dbh,
+ "delrow",
+ rowid);
+ proc (proc_cls, NULL, 0, NULL, 0, 0, 0,
+ GNUNET_TIME_UNIT_ZERO_ABS, 0);
+ return;
+ }
- type = ntohl (*(uint32_t *) PQgetvalue (res, 0, 0));
- priority = ntohl (*(uint32_t *) PQgetvalue (res, 0, 1));
- anonymity = ntohl ( *(uint32_t *) PQgetvalue (res, 0, 2));
- expiration_time.abs_value = GNUNET_ntohll (*(uint64_t *) PQgetvalue (res, 0, 3));
- memcpy (&key,
- PQgetvalue (res, 0, 4),
- sizeof (GNUNET_HashCode));
- size = PQgetlength (res, 0, 5);
-#if DEBUG_POSTGRES
GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
"datastore-postgres",
- "Found result of size %u bytes and type %u in database\n",
- (unsigned int) size,
- (unsigned int) type);
-#endif
+ "Found result of size %u bytes and type %u in database\n",
+ (unsigned int) size,
+ (unsigned int) utype);
iret = proc (proc_cls,
&key,
size,
- PQgetvalue (res, 0, 5),
- (enum GNUNET_BLOCK_Type) type,
+ data,
+ (enum GNUNET_BLOCK_Type) utype,
priority,
anonymity,
expiration_time,
rowid);
PQclear (res);
if (iret == GNUNET_NO)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Processor asked for item %u to be removed.\n",
+ (unsigned int) rowid);
+ if (GNUNET_OK ==
+ GNUNET_POSTGRES_delete_by_rowid (plugin->dbh,
+ "delrow",
+ rowid))
{
-#if DEBUG_POSTGRES
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Processor asked for item %u to be removed.\n",
- rowid);
-#endif
- if (GNUNET_OK == delete_by_rowid (plugin, rowid))
- {
-#if DEBUG_POSTGRES
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
- "datastore-postgres",
- "Deleting %u bytes from database\n",
- (unsigned int) size);
-#endif
- plugin->env->duc (plugin->env->cls,
- - (size + GNUNET_DATASTORE_ENTRY_OVERHEAD));
-#if DEBUG_POSTGRES
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
- "datastore-postgres",
- "Deleted %u bytes from database\n",
- (unsigned int) size);
-#endif
- }
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
+ "datastore-postgres",
+ "Deleting %u bytes from database\n",
+ (unsigned int) size);
+ plugin->env->duc (plugin->env->cls,
+ - (size + GNUNET_DATASTORE_ENTRY_OVERHEAD));
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
+ "datastore-postgres",
+ "Deleted %u bytes from database\n",
+ (unsigned int) size);
}
+ }
}
* Iterate over the results for a particular key
* in the datastore.
*
- * @param cls closure
+ * @param cls closure with the 'struct Plugin'
+ * @param offset offset of the result (modulo num-results);
+ * specific ordering does not matter for the offset
* @param key maybe NULL (to match all entries)
* @param vhash hash of the value, maybe NULL (to
* match all values that have the right key).
* there may be!
* @param type entries of which type are relevant?
* Use 0 for any type.
- * @param iter function to call on each matching value;
- * will be called once with a NULL value at the end
- * @param iter_cls closure for iter
+ * @param proc function to call on the matching value;
+ * will be called once with a NULL if no value matches
+ * @param proc_cls closure for iter
*/
static void
postgres_plugin_get_key (void *cls,
uint64_t offset,
- const GNUNET_HashCode *key,
- const GNUNET_HashCode *vhash,
- enum GNUNET_BLOCK_Type type,
- PluginDatumProcessor proc, void *proc_cls)
+ const struct GNUNET_HashCode *key,
+ const struct GNUNET_HashCode *vhash,
+ enum GNUNET_BLOCK_Type type,
+ PluginDatumProcessor proc,
+ void *proc_cls)
{
struct Plugin *plugin = cls;
- const int paramFormats[] = { 1, 1, 1, 1, 1 };
- int paramLengths[4];
- const char *paramValues[4];
- int nparams;
- const char *pname;
+ uint32_t utype = type;
PGresult *ret;
uint64_t total;
- uint64_t blimit_off;
- uint32_t btype;
-
- GNUNET_assert (key != NULL);
- paramValues[0] = (const char*) key;
- paramLengths[0] = sizeof (GNUNET_HashCode);
- btype = htonl (type);
- if (type != 0)
+ uint64_t limit_off;
+
+ if (0 != type)
+ {
+ if (NULL != vhash)
{
- if (vhash != NULL)
- {
- paramValues[1] = (const char *) vhash;
- paramLengths[1] = sizeof (GNUNET_HashCode);
- paramValues[2] = (const char *) &btype;
- paramLengths[2] = sizeof (btype);
- paramValues[3] = (const char *) &blimit_off;
- paramLengths[3] = sizeof (blimit_off);
- nparams = 4;
- pname = "getvt";
- ret = PQexecParams (plugin->dbh,
- "SELECT count(*) FROM gn090 WHERE hash=$1 AND vhash=$2 AND type=$3",
- 3,
- NULL,
- paramValues,
- paramLengths,
- paramFormats, 1);
- }
- else
- {
- paramValues[1] = (const char *) &btype;
- paramLengths[1] = sizeof (btype);
- paramValues[2] = (const char *) &blimit_off;
- paramLengths[2] = sizeof (blimit_off);
- nparams = 3;
- pname = "gett";
- ret = PQexecParams (plugin->dbh,
- "SELECT count(*) FROM gn090 WHERE hash=$1 AND type=$2",
- 2,
- NULL,
- paramValues,
- paramLengths,
- paramFormats, 1);
- }
+ struct GNUNET_PQ_QueryParam params[] = {
+ GNUNET_PQ_query_param_auto_from_type (key),
+ GNUNET_PQ_query_param_auto_from_type (vhash),
+ GNUNET_PQ_query_param_uint32 (&utype),
+ GNUNET_PQ_query_param_end
+ };
+ ret = GNUNET_PQ_exec_prepared (plugin->dbh,
+ "count_getvt",
+ params);
}
- else
+ else
{
- if (vhash != NULL)
- {
- paramValues[1] = (const char *) vhash;
- paramLengths[1] = sizeof (GNUNET_HashCode);
- paramValues[2] = (const char *) &blimit_off;
- paramLengths[2] = sizeof (blimit_off);
- nparams = 3;
- pname = "getv";
- ret = PQexecParams (plugin->dbh,
- "SELECT count(*) FROM gn090 WHERE hash=$1 AND vhash=$2",
- 2,
- NULL,
- paramValues,
- paramLengths,
- paramFormats, 1);
- }
- else
- {
- paramValues[1] = (const char *) &blimit_off;
- paramLengths[1] = sizeof (blimit_off);
- nparams = 2;
- pname = "get";
- ret = PQexecParams (plugin->dbh,
- "SELECT count(*) FROM gn090 WHERE hash=$1",
- 1,
- NULL,
- paramValues,
- paramLengths,
- paramFormats, 1);
- }
+ struct GNUNET_PQ_QueryParam params[] = {
+ GNUNET_PQ_query_param_auto_from_type (key),
+ GNUNET_PQ_query_param_uint32 (&utype),
+ GNUNET_PQ_query_param_end
+ };
+ ret = GNUNET_PQ_exec_prepared (plugin->dbh,
+ "count_gett",
+ params);
}
- if (GNUNET_OK != check_result (plugin,
- ret,
- PGRES_TUPLES_OK,
- "PQexecParams",
- pname,
- __LINE__))
+ }
+ else
+ {
+ if (NULL != vhash)
{
- proc (proc_cls,
- NULL, 0, NULL, 0, 0, 0,
- GNUNET_TIME_UNIT_ZERO_ABS, 0);
- return;
+ struct GNUNET_PQ_QueryParam params[] = {
+ GNUNET_PQ_query_param_auto_from_type (key),
+ GNUNET_PQ_query_param_auto_from_type (vhash),
+ GNUNET_PQ_query_param_end
+ };
+ ret = GNUNET_PQ_exec_prepared (plugin->dbh,
+ "count_getv",
+ params);
}
- if ((PQntuples (ret) != 1) ||
- (PQnfields (ret) != 1) ||
- (PQgetlength (ret, 0, 0) != sizeof (unsigned long long)))
+ else
{
- GNUNET_break (0);
- PQclear (ret);
- proc (proc_cls,
- NULL, 0, NULL, 0, 0, 0,
- GNUNET_TIME_UNIT_ZERO_ABS, 0);
- return;
+ struct GNUNET_PQ_QueryParam params[] = {
+ GNUNET_PQ_query_param_auto_from_type (key),
+ GNUNET_PQ_query_param_end
+ };
+ ret = GNUNET_PQ_exec_prepared (plugin->dbh,
+ "count_get",
+ params);
}
- total = GNUNET_ntohll (*(const unsigned long long *) PQgetvalue (ret, 0, 0));
+ }
+
+ if (GNUNET_OK !=
+ GNUNET_POSTGRES_check_result (plugin->dbh,
+ ret,
+ PGRES_TUPLES_OK,
+ "PQexecParams",
+ "count"))
+ {
+ proc (proc_cls, NULL, 0, NULL, 0, 0, 0,
+ GNUNET_TIME_UNIT_ZERO_ABS, 0);
+ return;
+ }
+ if ( (PQntuples (ret) != 1) ||
+ (PQnfields (ret) != 1) ||
+ (PQgetlength (ret, 0, 0) != sizeof (uint64_t)))
+ {
+ GNUNET_break (0);
+ PQclear (ret);
+ proc (proc_cls, NULL, 0, NULL, 0, 0, 0,
+ GNUNET_TIME_UNIT_ZERO_ABS, 0);
+ return;
+ }
+ total = GNUNET_ntohll (*(const uint64_t *) PQgetvalue (ret, 0, 0));
PQclear (ret);
- if (total == 0)
+ if (0 == total)
+ {
+ proc (proc_cls, NULL, 0, NULL, 0, 0, 0,
+ GNUNET_TIME_UNIT_ZERO_ABS, 0);
+ return;
+ }
+ limit_off = offset % total;
+
+ if (0 != type)
+ {
+ if (NULL != vhash)
+ {
+ struct GNUNET_PQ_QueryParam params[] = {
+ GNUNET_PQ_query_param_auto_from_type (key),
+ GNUNET_PQ_query_param_auto_from_type (vhash),
+ GNUNET_PQ_query_param_uint32 (&utype),
+ GNUNET_PQ_query_param_uint64 (&limit_off),
+ GNUNET_PQ_query_param_end
+ };
+ ret = GNUNET_PQ_exec_prepared (plugin->dbh,
+ "getvt",
+ params);
+ }
+ else
{
- proc (proc_cls,
- NULL, 0, NULL, 0, 0, 0,
- GNUNET_TIME_UNIT_ZERO_ABS, 0);
- return;
+ struct GNUNET_PQ_QueryParam params[] = {
+ GNUNET_PQ_query_param_auto_from_type (key),
+ GNUNET_PQ_query_param_uint32 (&utype),
+ GNUNET_PQ_query_param_uint64 (&limit_off),
+ GNUNET_PQ_query_param_end
+ };
+ ret = GNUNET_PQ_exec_prepared (plugin->dbh,
+ "gett",
+ params);
}
- blimit_off = GNUNET_htonll (offset % total);
- ret = PQexecPrepared (plugin->dbh,
- pname,
- nparams,
- paramValues,
- paramLengths,
- paramFormats, 1);
+ }
+ else
+ {
+ if (NULL != vhash)
+ {
+ struct GNUNET_PQ_QueryParam params[] = {
+ GNUNET_PQ_query_param_auto_from_type (key),
+ GNUNET_PQ_query_param_auto_from_type (vhash),
+ GNUNET_PQ_query_param_uint64 (&limit_off),
+ GNUNET_PQ_query_param_end
+ };
+ ret = GNUNET_PQ_exec_prepared (plugin->dbh,
+ "getv",
+ params);
+ }
+ else
+ {
+ struct GNUNET_PQ_QueryParam params[] = {
+ GNUNET_PQ_query_param_auto_from_type (key),
+ GNUNET_PQ_query_param_uint64 (&limit_off),
+ GNUNET_PQ_query_param_end
+ };
+ ret = GNUNET_PQ_exec_prepared (plugin->dbh,
+ "get",
+ params);
+ }
+ }
process_result (plugin,
- proc, proc_cls,
- ret, __LINE__);
+ proc,
+ proc_cls,
+ ret,
+ __FILE__, __LINE__);
}
* Select a subset of the items in the datastore and call
* the given iterator for each of them.
*
- * @param cls our "struct Plugin*"
+ * @param cls our `struct Plugin *`
+ * @param offset offset of the result (modulo num-results);
+ * specific ordering does not matter for the offset
* @param type entries of which type should be considered?
* Use 0 for any type.
- * @param iter function to call on each matching value;
- * will be called once with a NULL value at the end
- * @param iter_cls closure for iter
+ * @param proc function to call on the matching value;
+ * will be called with a NULL if no value matches
+ * @param proc_cls closure for @a proc
*/
static void
postgres_plugin_get_zero_anonymity (void *cls,
uint64_t offset,
- enum GNUNET_BLOCK_Type type,
- PluginDatumProcessor proc, void *proc_cls)
+ enum GNUNET_BLOCK_Type type,
+ PluginDatumProcessor proc,
+ void *proc_cls)
{
struct Plugin *plugin = cls;
- uint32_t btype;
- uint64_t boff;
- const int paramFormats[] = { 1, 1 };
- int paramLengths[] = { sizeof (btype), sizeof (boff) };
- const char *paramValues[] = { (const char*) &btype, (const char*) &boff };
+ uint32_t utype = type;
+ struct GNUNET_PQ_QueryParam params[] = {
+ GNUNET_PQ_query_param_uint32 (&utype),
+ GNUNET_PQ_query_param_uint64 (&offset),
+ GNUNET_PQ_query_param_end
+ };
PGresult *ret;
- btype = htonl ((uint32_t) type);
- boff = GNUNET_htonll (offset);
- ret = PQexecPrepared (plugin->dbh,
- "select_non_anonymous",
- 2,
- paramValues,
- paramLengths,
- paramFormats, 1);
+ ret = GNUNET_PQ_exec_prepared (plugin->dbh,
+ "select_non_anonymous",
+ params);
+
process_result (plugin,
proc, proc_cls,
- ret, __LINE__);
+ ret,
+ __FILE__, __LINE__);
}
/**
- * Context for 'repl_iter' function.
+ * Context for #repl_iter() function.
*/
struct ReplCtx
{
-
+
/**
* Plugin handle.
*/
struct Plugin *plugin;
-
+
/**
* Function to call for the result (or the NULL).
*/
PluginDatumProcessor proc;
-
+
/**
- * Closure for proc.
+ * Closure for @e proc.
*/
void *proc_cls;
};
* Decrements the replication counter and calls the original
* iterator.
*
- * @param cls closure
- * @param next_cls closure to pass to the "next" function.
+ * @param cls closure with the `struct ReplCtx *`
* @param key key for the content
- * @param size number of bytes in data
+ * @param size number of bytes in @a data
* @param data content stored
* @param type type of the content
* @param priority priority of the content
* @param expiration expiration time for the content
* @param uid unique identifier for the datum;
* maybe 0 if no unique identifier is available
- *
- * @return GNUNET_SYSERR to abort the iteration, GNUNET_OK to continue
+ * @return #GNUNET_SYSERR to abort the iteration,
+ * #GNUNET_OK to continue
* (continue on call to "next", of course),
- * GNUNET_NO to delete the item and continue (if supported)
+ * #GNUNET_NO to delete the item and continue (if supported)
*/
static int
repl_proc (void *cls,
- const GNUNET_HashCode *key,
+ const struct GNUNET_HashCode *key,
uint32_t size,
- const void *data,
+ const void *data,
enum GNUNET_BLOCK_Type type,
uint32_t priority,
- uint32_t anonymity,
- struct GNUNET_TIME_Absolute expiration,
- uint64_t uid)
+ uint32_t anonymity,
+ struct GNUNET_TIME_Absolute expiration,
+ uint64_t uid)
{
struct ReplCtx *rc = cls;
struct Plugin *plugin = rc->plugin;
int ret;
+ uint32_t oid = (uint32_t) uid;
+ struct GNUNET_PQ_QueryParam params[] = {
+ GNUNET_PQ_query_param_uint32 (&oid),
+ GNUNET_PQ_query_param_end
+ };
PGresult *qret;
- uint32_t boid;
ret = rc->proc (rc->proc_cls,
key,
- size, data,
- type, priority, anonymity, expiration,
- uid);
- if (NULL != key)
- {
- boid = htonl ( (uint32_t) uid);
- const char *paramValues[] = {
- (const char *) &boid,
- };
- int paramLengths[] = {
- sizeof (boid),
- };
- const int paramFormats[] = { 1 };
- qret = PQexecPrepared (plugin->dbh,
- "decrepl",
- 1, paramValues, paramLengths, paramFormats, 1);
- if (GNUNET_OK != check_result (plugin,
- qret,
- PGRES_COMMAND_OK,
- "PQexecPrepared",
- "decrepl", __LINE__))
- return GNUNET_SYSERR;
- PQclear (qret);
- }
+ size, data,
+ type,
+ priority,
+ anonymity,
+ expiration, uid);
+ if (NULL == key)
+ return ret;
+ qret = GNUNET_PQ_exec_prepared (plugin->dbh,
+ "decrepl",
+ params);
+ if (GNUNET_OK !=
+ GNUNET_POSTGRES_check_result (plugin->dbh,
+ qret,
+ PGRES_COMMAND_OK,
+ "PQexecPrepared",
+ "decrepl"))
+ return GNUNET_SYSERR;
+ PQclear (qret);
return ret;
}
/**
- * Get a random item for replication. Returns a single, not expired, random item
- * from those with the highest replication counters. The item's
- * replication counter is decremented by one IF it was positive before.
- * Call 'proc' with all values ZERO or NULL if the datastore is empty.
+ * Get a random item for replication. Returns a single, not expired,
+ * random item from those with the highest replication counters. The
+ * item's replication counter is decremented by one IF it was positive
+ * before. Call @a proc with all values ZERO or NULL if the datastore
+ * is empty.
*
- * @param cls closure
+ * @param cls closure with the `struct Plugin`
* @param proc function to call the value (once only).
- * @param proc_cls closure for iter
+ * @param proc_cls closure for @a proc
*/
static void
postgres_plugin_get_replication (void *cls,
- PluginDatumProcessor proc, void *proc_cls)
+ PluginDatumProcessor proc,
+ void *proc_cls)
{
struct Plugin *plugin = cls;
struct ReplCtx rc;
rc.proc = proc;
rc.proc_cls = proc_cls;
ret = PQexecPrepared (plugin->dbh,
- "select_replication_order",
- 0,
- NULL, NULL, NULL, 1);
+ "select_replication_order", 0, NULL, NULL,
+ NULL, 1);
process_result (plugin,
- &repl_proc, &rc,
- ret, __LINE__);
+ &repl_proc,
+ &rc,
+ ret,
+ __FILE__, __LINE__);
}
/**
- * Get a random item for expiration.
- * Call 'iter' with all values ZERO or NULL if the datastore is empty.
+ * Get a random item for expiration. Call @a proc with all values
+ * ZERO or NULL if the datastore is empty.
*
- * @param cls closure
+ * @param cls closure with the `struct Plugin`
* @param proc function to call the value (once only).
- * @param proc_cls closure for iter
+ * @param proc_cls closure for @a proc
*/
static void
postgres_plugin_get_expiration (void *cls,
- PluginDatumProcessor proc, void *proc_cls)
+ PluginDatumProcessor proc,
+ void *proc_cls)
{
struct Plugin *plugin = cls;
- uint64_t btime;
- const int paramFormats[] = { 1 };
- int paramLengths[] = { sizeof (btime) };
- const char *paramValues[] = { (const char*) &btime };
+ struct GNUNET_TIME_Absolute now;
+ struct GNUNET_PQ_QueryParam params[] = {
+ GNUNET_PQ_query_param_absolute_time (&now),
+ GNUNET_PQ_query_param_end
+ };
PGresult *ret;
-
- btime = GNUNET_htonll (GNUNET_TIME_absolute_get ().abs_value);
- ret = PQexecPrepared (plugin->dbh,
- "select_expiration_order",
- 1,
- paramValues,
- paramLengths,
- paramFormats,
- 1);
+
+ now = GNUNET_TIME_absolute_get ();
+ ret = GNUNET_PQ_exec_prepared (plugin->dbh,
+ "select_expiration_order",
+ params);
process_result (plugin,
proc, proc_cls,
- ret, __LINE__);
+ ret,
+ __FILE__, __LINE__);
}
* Note that it is possible for multiple values to match this put.
* In that case, all of the respective values are updated.
*
- * @param cls our "struct Plugin*"
+ * @param cls our `struct Plugin *`
* @param uid unique identifier of the datum
* @param delta by how much should the priority
* change? If priority + delta < 0 the
* @param expire new expiration time should be the
* MAX of any existing expiration time and
* this value
- * @param msg set to error message
- * @return GNUNET_OK on success
+ * @param cont continuation called with success or failure status
+ * @param cons_cls continuation closure
*/
-static int
+static void
postgres_plugin_update (void *cls,
uint64_t uid,
- int delta, struct GNUNET_TIME_Absolute expire,
- char **msg)
+ int delta,
+ struct GNUNET_TIME_Absolute expire,
+ PluginUpdateCont cont,
+ void *cont_cls)
{
struct Plugin *plugin = cls;
- PGresult *ret;
- int32_t bdelta = (int32_t) htonl ((uint32_t) delta);
- uint32_t boid = htonl ( (uint32_t) uid);
- uint64_t bexpire = GNUNET_TIME_absolute_hton (expire).abs_value__;
- const char *paramValues[] = {
- (const char *) &bdelta,
- (const char *) &bexpire,
- (const char *) &boid,
+ uint32_t idelta = delta;
+ uint32_t oid = (uint32_t) uid;
+ struct GNUNET_PQ_QueryParam params[] = {
+ GNUNET_PQ_query_param_uint32 (&idelta),
+ GNUNET_PQ_query_param_absolute_time (&expire),
+ GNUNET_PQ_query_param_uint32 (&oid),
+ GNUNET_PQ_query_param_end
};
- int paramLengths[] = {
- sizeof (bdelta),
- sizeof (bexpire),
- sizeof (boid),
- };
- const int paramFormats[] = { 1, 1, 1 };
+ PGresult *ret;
- ret = PQexecPrepared (plugin->dbh,
- "update",
- 3, paramValues, paramLengths, paramFormats, 1);
- if (GNUNET_OK != check_result (plugin,
- ret,
- PGRES_COMMAND_OK,
- "PQexecPrepared", "update", __LINE__))
- return GNUNET_SYSERR;
+ ret = GNUNET_PQ_exec_prepared (plugin->dbh,
+ "update",
+ params);
+ if (GNUNET_OK !=
+ GNUNET_POSTGRES_check_result (plugin->dbh,
+ ret,
+ PGRES_COMMAND_OK,
+ "PQexecPrepared",
+ "update"))
+ {
+ cont (cont_cls,
+ GNUNET_SYSERR,
+ NULL);
+ return;
+ }
PQclear (ret);
- return GNUNET_OK;
+ cont (cont_cls,
+ GNUNET_OK,
+ NULL);
+}
+
+
+/**
+ * Get all of the keys in the datastore.
+ *
+ * @param cls closure with the `struct Plugin *`
+ * @param proc function to call on each key
+ * @param proc_cls closure for @a proc
+ */
+static void
+postgres_plugin_get_keys (void *cls,
+ PluginKeyProcessor proc,
+ void *proc_cls)
+{
+ struct Plugin *plugin = cls;
+ int ret;
+ int i;
+ struct GNUNET_HashCode key;
+ PGresult * res;
+
+ res = PQexecPrepared (plugin->dbh,
+ "get_keys",
+ 0, NULL, NULL, NULL, 1);
+ ret = PQntuples (res);
+ for (i=0;i<ret;i++)
+ {
+ if (sizeof (struct GNUNET_HashCode) !=
+ PQgetlength (res, i, 0))
+ {
+ memcpy (&key,
+ PQgetvalue (res, i, 0),
+ sizeof (struct GNUNET_HashCode));
+ proc (proc_cls, &key, 1);
+ }
+ }
+ PQclear (res);
+ proc (proc_cls, NULL, 0);
}
/**
* Drop database.
+ *
+ * @param cls closure with the `struct Plugin *`
*/
-static void
+static void
postgres_plugin_drop (void *cls)
{
struct Plugin *plugin = cls;
- pq_exec (plugin, "DROP TABLE gn090", __LINE__);
+ if (GNUNET_OK !=
+ GNUNET_POSTGRES_exec (plugin->dbh,
+ "DROP TABLE gn090"))
+ GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING,
+ "postgres",
+ _("Failed to drop table from database.\n"));
}
/**
* Entry point for the plugin.
*
- * @param cls the "struct GNUNET_DATASTORE_PluginEnvironment*"
- * @return our "struct Plugin*"
+ * @param cls the `struct GNUNET_DATASTORE_PluginEnvironment*`
+ * @return our `struct Plugin *`
*/
void *
libgnunet_plugin_datastore_postgres_init (void *cls)
struct GNUNET_DATASTORE_PluginFunctions *api;
struct Plugin *plugin;
- plugin = GNUNET_malloc (sizeof (struct Plugin));
+ plugin = GNUNET_new (struct Plugin);
plugin->env = env;
if (GNUNET_OK != init_connection (plugin))
- {
- GNUNET_free (plugin);
- return NULL;
- }
- api = GNUNET_malloc (sizeof (struct GNUNET_DATASTORE_PluginFunctions));
+ {
+ GNUNET_free (plugin);
+ return NULL;
+ }
+ api = GNUNET_new (struct GNUNET_DATASTORE_PluginFunctions);
api->cls = plugin;
api->estimate_size = &postgres_plugin_estimate_size;
api->put = &postgres_plugin_put;
api->get_replication = &postgres_plugin_get_replication;
api->get_expiration = &postgres_plugin_get_expiration;
api->get_zero_anonymity = &postgres_plugin_get_zero_anonymity;
+ api->get_keys = &postgres_plugin_get_keys;
api->drop = &postgres_plugin_drop;
GNUNET_log_from (GNUNET_ERROR_TYPE_INFO,
"datastore-postgres",
- _("Postgres database running\n"));
+ _("Postgres database running\n"));
return api;
}
/**
* Exit point from the plugin.
- * @param cls our "struct Plugin*"
+ *
+ * @param cls our `struct Plugin *`
* @return always NULL
*/
void *
{
struct GNUNET_DATASTORE_PluginFunctions *api = cls;
struct Plugin *plugin = api->cls;
-
+
PQfinish (plugin->dbh);
GNUNET_free (plugin);
GNUNET_free (api);
projects / oweals / gnunet.git / blobdiff