/*
- This file is part of GNUnet
- (C) 2009 Christian Grothoff (and other contributing authors)
-
- GNUnet is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 3, or (at your
- option) any later version.
-
- GNUnet is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- 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.
-*/
+ * This file is part of GNUnet
+ * (C) 2009, 2011 Christian Grothoff (and other contributing authors)
+ *
+ * GNUnet is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 3, or (at your
+ * option) any later version.
+ *
+ * GNUnet is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * 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.
+ */
/**
* @file datastore/plugin_datastore_sqlite.c
*/
#include "platform.h"
-#include "plugin_datastore.h"
+#include "gnunet_datastore_plugin.h"
#include <sqlite3.h>
-#define DEBUG_SQLITE GNUNET_YES
-
-
/**
- * Log an error message at log-level 'level' that indicates
- * a failure of the command 'cmd' on file 'filename'
- * with the message given by strerror(errno).
+ * Enable or disable logging debug messages.
*/
-#define LOG_SQLITE(db, msg, level, cmd) do { GNUNET_log_from (level, "sqlite", _("`%s' failed at %s:%d with error: %s\n"), cmd, __FILE__, __LINE__, sqlite3_errmsg(db->dbh)); if (msg != NULL) GNUNET_asprintf(msg, _("`%s' failed at %s:%u with error: %s"), cmd, __FILE__, __LINE__, sqlite3_errmsg(db->dbh)); } while(0)
-
-#define SELECT_IT_LOW_PRIORITY_1 \
- "SELECT size,type,prio,anonLevel,expire,hash,value,_ROWID_ FROM gn080 WHERE (prio = ? AND hash > ?) "\
- "ORDER BY hash ASC LIMIT 1"
-
-#define SELECT_IT_LOW_PRIORITY_2 \
- "SELECT size,type,prio,anonLevel,expire,hash,value,_ROWID_ FROM gn080 WHERE (prio > ?) "\
- "ORDER BY prio ASC, hash ASC LIMIT 1"
-
-#define SELECT_IT_NON_ANONYMOUS_1 \
- "SELECT size,type,prio,anonLevel,expire,hash,value,_ROWID_ FROM gn080 WHERE (prio = ? AND hash < ? AND anonLevel = 0 AND expire > %llu) "\
- " ORDER BY hash DESC LIMIT 1"
-
-#define SELECT_IT_NON_ANONYMOUS_2 \
- "SELECT size,type,prio,anonLevel,expire,hash,value,_ROWID_ FROM gn080 WHERE (prio < ? AND anonLevel = 0 AND expire > %llu)"\
- " ORDER BY prio DESC, hash DESC LIMIT 1"
-
-#define SELECT_IT_EXPIRATION_TIME_1 \
- "SELECT size,type,prio,anonLevel,expire,hash,value,_ROWID_ FROM gn080 WHERE (expire = ? AND hash > ?) "\
- " ORDER BY hash ASC LIMIT 1"
-
-#define SELECT_IT_EXPIRATION_TIME_2 \
- "SELECT size,type,prio,anonLevel,expire,hash,value,_ROWID_ FROM gn080 WHERE (expire > ?) "\
- " ORDER BY expire ASC, hash ASC LIMIT 1"
-
-#define SELECT_IT_MIGRATION_ORDER_1 \
- "SELECT size,type,prio,anonLevel,expire,hash,value,_ROWID_ FROM gn080 WHERE (expire = ? AND hash < ?) "\
- " ORDER BY hash DESC LIMIT 1"
+#define DEBUG_SQLITE GNUNET_NO
-#define SELECT_IT_MIGRATION_ORDER_2 \
- "SELECT size,type,prio,anonLevel,expire,hash,value,_ROWID_ FROM gn080 WHERE (expire < ? AND expire > %llu) "\
- " ORDER BY expire DESC, hash DESC LIMIT 1"
+/**
+ * We allocate items on the stack at times. To prevent a stack
+ * overflow, we impose a limit on the maximum size for the data per
+ * item. 64k should be enough.
+ */
+#define MAX_ITEM_SIZE 65536
/**
* After how many ms "busy" should a DB operation fail for good?
#define BUSY_TIMEOUT_MS 250
+/**
+ * Log an error message at log-level 'level' that indicates
+ * a failure of the command 'cmd' on file 'filename'
+ * with the message given by strerror(errno).
+ */
+#define LOG_SQLITE(db, msg, level, cmd) do { GNUNET_log_from (level, "sqlite", _("`%s' failed at %s:%d with error: %s\n"), cmd, __FILE__, __LINE__, sqlite3_errmsg(db->dbh)); if (msg != NULL) GNUNET_asprintf(msg, _("`%s' failed at %s:%u with error: %s"), cmd, __FILE__, __LINE__, sqlite3_errmsg(db->dbh)); } while(0)
+
+
/**
* Context for all functions in this plugin.
*/
-struct Plugin
+struct Plugin
{
/**
* Our execution environment.
*/
sqlite3 *dbh;
+ /**
+ * Precompiled SQL for deletion.
+ */
+ sqlite3_stmt *delRow;
+
/**
* Precompiled SQL for update.
*/
sqlite3_stmt *updPrio;
/**
- * Precompiled SQL for insertion.
+ * Get maximum repl value in database.
*/
- sqlite3_stmt *insertContent;
+ sqlite3_stmt *maxRepl;
+
+ /**
+ * Precompiled SQL for replication decrement.
+ */
+ sqlite3_stmt *updRepl;
+
+ /**
+ * Precompiled SQL for replication selection.
+ */
+ sqlite3_stmt *selRepl;
+
+ /**
+ * Precompiled SQL for expiration selection.
+ */
+ sqlite3_stmt *selExpi;
/**
- * Closure of the 'next_task' (must be freed if 'next_task' is cancelled).
+ * Precompiled SQL for expiration selection.
*/
- struct NextContext *next_task_nc;
+ sqlite3_stmt *selZeroAnon;
/**
- * Pending task with scheduler for running the next request.
+ * Precompiled SQL for insertion.
*/
- GNUNET_SCHEDULER_TaskIdentifier next_task;
+ sqlite3_stmt *insertContent;
/**
* Should the database be dropped on shutdown?
* @return 0 on success
*/
static int
-sq_prepare (sqlite3 * dbh, const char *zSql,
- sqlite3_stmt ** ppStmt)
+sq_prepare (sqlite3 * dbh, const char *zSql, sqlite3_stmt ** ppStmt)
{
char *dummy;
- return sqlite3_prepare_v2 (dbh,
- zSql,
- strlen (zSql), ppStmt, (const char **) &dummy);
+ int result;
+
+ result =
+ sqlite3_prepare_v2 (dbh, zSql, strlen (zSql), ppStmt,
+ (const char **) &dummy);
+#if DEBUG_SQLITE && 0
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "sqlite",
+ "Prepared `%s' / %p: %d\n", zSql, *ppStmt, result);
+#endif
+ return result;
}
/**
* Create our database indices.
- *
+ *
* @param dbh handle to the database
*/
static void
create_indices (sqlite3 * dbh)
{
/* create indices */
- sqlite3_exec (dbh,
- "CREATE INDEX idx_hash ON gn080 (hash)", NULL, NULL, NULL);
- sqlite3_exec (dbh,
- "CREATE INDEX idx_hash_vhash ON gn080 (hash,vhash)", NULL,
- NULL, NULL);
- sqlite3_exec (dbh, "CREATE INDEX idx_prio ON gn080 (prio)", NULL, NULL,
- NULL);
- sqlite3_exec (dbh, "CREATE INDEX idx_expire ON gn080 (expire)", NULL, NULL,
- NULL);
- sqlite3_exec (dbh, "CREATE INDEX idx_comb3 ON gn080 (prio,anonLevel)", NULL,
- NULL, NULL);
- sqlite3_exec (dbh, "CREATE INDEX idx_comb4 ON gn080 (prio,hash,anonLevel)",
- NULL, NULL, NULL);
- sqlite3_exec (dbh, "CREATE INDEX idx_comb7 ON gn080 (expire,hash)", NULL,
- NULL, NULL);
+ if ((SQLITE_OK !=
+ sqlite3_exec (dbh, "CREATE INDEX IF NOT EXISTS idx_hash ON gn090 (hash)",
+ NULL, NULL, NULL)) ||
+ (SQLITE_OK !=
+ sqlite3_exec (dbh,
+ "CREATE INDEX IF NOT EXISTS idx_hash_vhash ON gn090 (hash,vhash)",
+ NULL, NULL, NULL)) ||
+ (SQLITE_OK !=
+ sqlite3_exec (dbh,
+ "CREATE INDEX IF NOT EXISTS idx_expire_repl ON gn090 (expire ASC,repl DESC)",
+ NULL, NULL, NULL)) ||
+ (SQLITE_OK !=
+ sqlite3_exec (dbh,
+ "CREATE INDEX IF NOT EXISTS idx_comb ON gn090 (anonLevel ASC,expire ASC,prio,type,hash)",
+ NULL, NULL, NULL)) ||
+ (SQLITE_OK !=
+ sqlite3_exec (dbh,
+ "CREATE INDEX IF NOT EXISTS idx_anon_type_hash ON gn090 (anonLevel ASC,type,hash)",
+ NULL, NULL, NULL)) ||
+ (SQLITE_OK !=
+ sqlite3_exec (dbh,
+ "CREATE INDEX IF NOT EXISTS idx_expire ON gn090 (expire ASC)",
+ NULL, NULL, NULL)) ||
+ (SQLITE_OK !=
+ sqlite3_exec (dbh,
+ "CREATE INDEX IF NOT EXISTS idx_repl_rvalue ON gn090 (repl,rvalue)",
+ NULL, NULL, NULL)) ||
+ (SQLITE_OK !=
+ sqlite3_exec (dbh,
+ "CREATE INDEX IF NOT EXISTS idx_repl ON gn090 (repl DESC)",
+ NULL, NULL, NULL)))
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, "sqlite",
+ "Failed to create indices: %s\n", sqlite3_errmsg (dbh));
}
-
#if 0
#define CHECK(a) GNUNET_break(a)
#define ENULL NULL
#endif
-
-
/**
* Initialize the database connections and associated
* data structures (create tables and indices
*/
static int
database_setup (const struct GNUNET_CONFIGURATION_Handle *cfg,
- struct Plugin *plugin)
+ struct Plugin *plugin)
{
sqlite3_stmt *stmt;
char *afsdir;
+
#if ENULL_DEFINED
char *e;
#endif
-
- if (GNUNET_OK !=
- GNUNET_CONFIGURATION_get_value_filename (cfg,
- "datastore-sqlite",
- "FILENAME",
- &afsdir))
- {
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
- "sqlite",
- _("Option `%s' in section `%s' missing in configuration!\n"),
- "FILENAME",
- "datastore-sqlite");
- return GNUNET_SYSERR;
- }
+
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_filename (cfg, "datastore-sqlite",
+ "FILENAME", &afsdir))
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, "sqlite",
+ _
+ ("Option `%s' in section `%s' missing in configuration!\n"),
+ "FILENAME", "datastore-sqlite");
+ return GNUNET_SYSERR;
+ }
if (GNUNET_OK != GNUNET_DISK_file_test (afsdir))
+ {
+ if (GNUNET_OK != GNUNET_DISK_directory_create_for_file (afsdir))
{
- if (GNUNET_OK != GNUNET_DISK_directory_create_for_file (afsdir))
- {
- GNUNET_break (0);
- GNUNET_free (afsdir);
- return GNUNET_SYSERR;
- }
- /* database is new or got deleted, reset payload to zero! */
- plugin->env->duc (plugin->env->cls, 0);
+ GNUNET_break (0);
+ GNUNET_free (afsdir);
+ return GNUNET_SYSERR;
}
- plugin->fn = GNUNET_STRINGS_to_utf8 (afsdir, strlen (afsdir),
+ /* database is new or got deleted, reset payload to zero! */
+ plugin->env->duc (plugin->env->cls, 0);
+ }
#ifdef ENABLE_NLS
- nl_langinfo (CODESET)
+ plugin->fn =
+ GNUNET_STRINGS_to_utf8 (afsdir, strlen (afsdir), nl_langinfo (CODESET));
#else
- "UTF-8" /* good luck */
+ plugin->fn = GNUNET_STRINGS_to_utf8 (afsdir, strlen (afsdir), "UTF-8"); /* good luck */
#endif
- );
GNUNET_free (afsdir);
-
+
/* Open database and precompile statements */
if (sqlite3_open (plugin->fn, &plugin->dbh) != SQLITE_OK)
- {
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
- "sqlite",
- _("Unable to initialize SQLite: %s.\n"),
- sqlite3_errmsg (plugin->dbh));
- return GNUNET_SYSERR;
- }
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, "sqlite",
+ _("Unable to initialize SQLite: %s.\n"),
+ sqlite3_errmsg (plugin->dbh));
+ return GNUNET_SYSERR;
+ }
+ CHECK (SQLITE_OK ==
+ sqlite3_exec (plugin->dbh, "PRAGMA temp_store=MEMORY", NULL, NULL,
+ ENULL));
CHECK (SQLITE_OK ==
- sqlite3_exec (plugin->dbh,
- "PRAGMA temp_store=MEMORY", NULL, NULL, ENULL));
+ sqlite3_exec (plugin->dbh, "PRAGMA synchronous=OFF", NULL, NULL,
+ ENULL));
CHECK (SQLITE_OK ==
- sqlite3_exec (plugin->dbh,
- "PRAGMA synchronous=OFF", NULL, NULL, ENULL));
+ sqlite3_exec (plugin->dbh, "PRAGMA legacy_file_format=OFF", NULL, NULL,
+ ENULL));
CHECK (SQLITE_OK ==
- sqlite3_exec (plugin->dbh,
- "PRAGMA auto_vacuum=INCREMENTAL", NULL, NULL, ENULL));
+ sqlite3_exec (plugin->dbh, "PRAGMA auto_vacuum=INCREMENTAL", NULL,
+ NULL, ENULL));
CHECK (SQLITE_OK ==
- sqlite3_exec (plugin->dbh,
- "PRAGMA count_changes=OFF", NULL, NULL, ENULL));
+ sqlite3_exec (plugin->dbh, "PRAGMA locking_mode=EXCLUSIVE", NULL, NULL,
+ ENULL));
CHECK (SQLITE_OK ==
- sqlite3_exec (plugin->dbh,
- "PRAGMA page_size=4092", NULL, NULL, ENULL));
+ sqlite3_exec (plugin->dbh, "PRAGMA count_changes=OFF", NULL, NULL,
+ ENULL));
+ CHECK (SQLITE_OK ==
+ sqlite3_exec (plugin->dbh, "PRAGMA page_size=4092", NULL, NULL,
+ ENULL));
CHECK (SQLITE_OK == sqlite3_busy_timeout (plugin->dbh, BUSY_TIMEOUT_MS));
/* We have to do it here, because otherwise precompiling SQL might fail */
CHECK (SQLITE_OK ==
sq_prepare (plugin->dbh,
- "SELECT 1 FROM sqlite_master WHERE tbl_name = 'gn080'",
+ "SELECT 1 FROM sqlite_master WHERE tbl_name = 'gn090'",
&stmt));
- if ( (sqlite3_step (stmt) == SQLITE_DONE) &&
- (sqlite3_exec (plugin->dbh,
- "CREATE TABLE gn080 ("
- " size INT4 NOT NULL DEFAULT 0,"
- " type INT4 NOT NULL DEFAULT 0,"
- " prio INT4 NOT NULL DEFAULT 0,"
- " anonLevel INT4 NOT NULL DEFAULT 0,"
- " expire INT8 NOT NULL DEFAULT 0,"
- " hash TEXT NOT NULL DEFAULT '',"
- " vhash TEXT NOT NULL DEFAULT '',"
- " value BLOB NOT NULL DEFAULT '')", NULL, NULL,
- NULL) != SQLITE_OK) )
- {
- LOG_SQLITE (plugin, NULL,
- GNUNET_ERROR_TYPE_ERROR,
- "sqlite3_exec");
- sqlite3_finalize (stmt);
- return GNUNET_SYSERR;
- }
+ if ((sqlite3_step (stmt) == SQLITE_DONE) &&
+ (sqlite3_exec
+ (plugin->dbh,
+ "CREATE TABLE gn090 (" " repl INT4 NOT NULL DEFAULT 0,"
+ " type INT4 NOT NULL DEFAULT 0," " prio INT4 NOT NULL DEFAULT 0,"
+ " anonLevel INT4 NOT NULL DEFAULT 0,"
+ " expire INT8 NOT NULL DEFAULT 0," " rvalue INT8 NOT NULL,"
+ " hash TEXT NOT NULL DEFAULT ''," " vhash TEXT NOT NULL DEFAULT '',"
+ " value BLOB NOT NULL DEFAULT '')", NULL, NULL, NULL) != SQLITE_OK))
+ {
+ LOG_SQLITE (plugin, NULL, GNUNET_ERROR_TYPE_ERROR, "sqlite3_exec");
+ sqlite3_finalize (stmt);
+ return GNUNET_SYSERR;
+ }
sqlite3_finalize (stmt);
create_indices (plugin->dbh);
- CHECK (SQLITE_OK ==
- sq_prepare (plugin->dbh,
- "SELECT 1 FROM sqlite_master WHERE tbl_name = 'gn071'",
- &stmt));
- if ( (sqlite3_step (stmt) == SQLITE_DONE) &&
- (sqlite3_exec (plugin->dbh,
- "CREATE TABLE gn071 ("
- " key TEXT NOT NULL DEFAULT '',"
- " value INTEGER NOT NULL DEFAULT 0)", NULL, NULL,
- NULL) != SQLITE_OK) )
- {
- LOG_SQLITE (plugin, NULL,
- GNUNET_ERROR_TYPE_ERROR, "sqlite3_exec");
- sqlite3_finalize (stmt);
- return GNUNET_SYSERR;
- }
- sqlite3_finalize (stmt);
+ if ((sq_prepare
+ (plugin->dbh,
+ "UPDATE gn090 "
+ "SET prio = prio + ?, expire = MAX(expire,?) WHERE _ROWID_ = ?",
+ &plugin->updPrio) != SQLITE_OK) ||
+ (sq_prepare
+ (plugin->dbh,
+ "UPDATE gn090 " "SET repl = MAX (0, repl - 1) WHERE _ROWID_ = ?",
+ &plugin->updRepl) != SQLITE_OK) ||
+ (sq_prepare
+ (plugin->dbh,
+ "SELECT type,prio,anonLevel,expire,hash,value,_ROWID_ "
+ "FROM gn090 INDEXED BY idx_repl_rvalue " "WHERE repl=?2 AND"
+ " (rvalue>=?1 OR"
+ " NOT EXISTS (SELECT 1 FROM gn090 INDEXED BY idx_repl_rvalue WHERE repl=?2 AND rvalue>=?1 LIMIT 1))"
+ " ORDER BY rvalue ASC" " LIMIT 1",
+ &plugin->selRepl) != SQLITE_OK) ||
+ (sq_prepare
+ (plugin->dbh,
+ "SELECT MAX(repl) " "FROM gn090 INDEXED BY idx_repl_rvalue",
+ &plugin->maxRepl) != SQLITE_OK) ||
+ (sq_prepare
+ (plugin->dbh,
+ "SELECT type,prio,anonLevel,expire,hash,value,_ROWID_ "
+ "FROM gn090 INDEXED BY idx_expire"
+ " WHERE NOT EXISTS (SELECT 1 FROM gn090 WHERE expire < ?1 LIMIT 1) OR (expire < ?1) "
+ " ORDER BY expire ASC LIMIT 1", &plugin->selExpi) != SQLITE_OK) ||
+ (sq_prepare
+ (plugin->dbh,
+ "SELECT type,prio,anonLevel,expire,hash,value,_ROWID_ "
+ "FROM gn090 INDEXED BY idx_anon_type_hash "
+ "WHERE (anonLevel = 0 AND type=?1) "
+ "ORDER BY hash DESC LIMIT 1 OFFSET ?2",
+ &plugin->selZeroAnon) != SQLITE_OK) ||
+ (sq_prepare
+ (plugin->dbh,
+ "INSERT INTO gn090 (repl, type, prio, "
+ "anonLevel, expire, rvalue, hash, vhash, value) "
+ "VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)",
+ &plugin->insertContent) != SQLITE_OK) ||
+ (sq_prepare
+ (plugin->dbh, "DELETE FROM gn090 WHERE _ROWID_ = ?",
+ &plugin->delRow) != SQLITE_OK))
+ {
+ LOG_SQLITE (plugin, NULL, GNUNET_ERROR_TYPE_ERROR, "precompiling");
+ return GNUNET_SYSERR;
+ }
- if ((sq_prepare (plugin->dbh,
- "UPDATE gn080 SET prio = prio + ?, expire = MAX(expire,?) WHERE "
- "_ROWID_ = ?",
- &plugin->updPrio) != SQLITE_OK) ||
- (sq_prepare (plugin->dbh,
- "INSERT INTO gn080 (size, type, prio, "
- "anonLevel, expire, hash, vhash, value) VALUES "
- "(?, ?, ?, ?, ?, ?, ?, ?)",
- &plugin->insertContent) != SQLITE_OK))
- {
- LOG_SQLITE (plugin, NULL,
- GNUNET_ERROR_TYPE_ERROR, "precompiling");
- return GNUNET_SYSERR;
- }
return GNUNET_OK;
}
static void
database_shutdown (struct Plugin *plugin)
{
+ int result;
+
+#if SQLITE_VERSION_NUMBER >= 3007000
+ sqlite3_stmt *stmt;
+#endif
+
+ if (plugin->delRow != NULL)
+ sqlite3_finalize (plugin->delRow);
if (plugin->updPrio != NULL)
sqlite3_finalize (plugin->updPrio);
+ if (plugin->updRepl != NULL)
+ sqlite3_finalize (plugin->updRepl);
+ if (plugin->selRepl != NULL)
+ sqlite3_finalize (plugin->selRepl);
+ if (plugin->maxRepl != NULL)
+ sqlite3_finalize (plugin->maxRepl);
+ if (plugin->selExpi != NULL)
+ sqlite3_finalize (plugin->selExpi);
+ if (plugin->selZeroAnon != NULL)
+ sqlite3_finalize (plugin->selZeroAnon);
if (plugin->insertContent != NULL)
sqlite3_finalize (plugin->insertContent);
- sqlite3_close (plugin->dbh);
+ result = sqlite3_close (plugin->dbh);
+#if SQLITE_VERSION_NUMBER >= 3007000
+ if (result == SQLITE_BUSY)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, "sqlite",
+ _
+ ("Tried to close sqlite without finalizing all prepared statements.\n"));
+ stmt = sqlite3_next_stmt (plugin->dbh, NULL);
+ while (stmt != NULL)
+ {
+#if DEBUG_SQLITE
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "sqlite",
+ "Closing statement %p\n", stmt);
+#endif
+ result = sqlite3_finalize (stmt);
+#if DEBUG_SQLITE
+ if (result != SQLITE_OK)
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "sqlite",
+ "Failed to close statement %p: %d\n", stmt, result);
+#endif
+ stmt = sqlite3_next_stmt (plugin->dbh, NULL);
+ }
+ result = sqlite3_close (plugin->dbh);
+ }
+#endif
+ if (SQLITE_OK != result)
+ LOG_SQLITE (plugin, NULL, GNUNET_ERROR_TYPE_ERROR, "sqlite3_close");
+
GNUNET_free_non_null (plugin->fn);
}
* @param rid the ID of the row to delete
*/
static int
-delete_by_rowid (struct Plugin* plugin,
- unsigned long long rid)
+delete_by_rowid (struct Plugin *plugin, unsigned long long rid)
{
- sqlite3_stmt *stmt;
-
- if (sq_prepare (plugin->dbh,
- "DELETE FROM gn080 WHERE _ROWID_ = ?", &stmt) != SQLITE_OK)
- {
+ if (SQLITE_OK != sqlite3_bind_int64 (plugin->delRow, 1, rid))
+ {
+ LOG_SQLITE (plugin, NULL, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_bind_XXXX");
+ if (SQLITE_OK != sqlite3_reset (plugin->delRow))
LOG_SQLITE (plugin, NULL,
- GNUNET_ERROR_TYPE_ERROR |
- GNUNET_ERROR_TYPE_BULK, "sq_prepare");
- return GNUNET_SYSERR;
- }
- sqlite3_bind_int64 (stmt, 1, rid);
- if (SQLITE_DONE != sqlite3_step (stmt))
- {
+ GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ return GNUNET_SYSERR;
+ }
+ if (SQLITE_DONE != sqlite3_step (plugin->delRow))
+ {
+ LOG_SQLITE (plugin, NULL, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_step");
+ if (SQLITE_OK != sqlite3_reset (plugin->delRow))
LOG_SQLITE (plugin, NULL,
- GNUNET_ERROR_TYPE_ERROR |
- GNUNET_ERROR_TYPE_BULK, "sqlite3_step");
- sqlite3_finalize (stmt);
- return GNUNET_SYSERR;
- }
- sqlite3_finalize (stmt);
+ GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ return GNUNET_SYSERR;
+ }
+ if (SQLITE_OK != sqlite3_reset (plugin->delRow))
+ LOG_SQLITE (plugin, NULL, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
return GNUNET_OK;
}
-/**
- * Context for the universal iterator.
- */
-struct NextContext;
-
-/**
- * Type of a function that will prepare
- * the next iteration.
- *
- * @param cls closure
- * @param nc the next context; NULL for the last
- * call which gives the callback a chance to
- * clean up the closure
- * @return GNUNET_OK on success, GNUNET_NO if there are
- * no more values, GNUNET_SYSERR on error
- */
-typedef int (*PrepareFunction)(void *cls,
- struct NextContext *nc);
-
-
-/**
- * Context we keep for the "next request" callback.
- */
-struct NextContext
-{
- /**
- * Internal state.
- */
- struct Plugin *plugin;
-
- /**
- * Function to call on the next value.
- */
- PluginIterator iter;
-
- /**
- * Closure for iter.
- */
- void *iter_cls;
-
- /**
- * Function to call to prepare the next
- * iteration.
- */
- PrepareFunction prep;
-
- /**
- * Closure for prep.
- */
- void *prep_cls;
-
- /**
- * Statement that the iterator will get the data
- * from (updated or set by prep).
- */
- sqlite3_stmt *stmt;
-
- /**
- * Row ID of the last result.
- */
- unsigned long long last_rowid;
-
- /**
- * Key of the last result.
- */
- GNUNET_HashCode lastKey;
-
- /**
- * Expiration time of the last value visited.
- */
- struct GNUNET_TIME_Absolute lastExpiration;
-
- /**
- * Priority of the last value visited.
- */
- unsigned int lastPriority;
-
- /**
- * Number of results processed so far.
- */
- unsigned int count;
-
- /**
- * Set to GNUNET_YES if we must stop now.
- */
- int end_it;
-};
-
-
-/**
- * Continuation of "sqlite_next_request".
- *
- * @param cls the next context
- * @param tc the task context (unused)
- */
-static void
-sqlite_next_request_cont (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- struct NextContext * nc = cls;
- struct Plugin *plugin;
- unsigned long long rowid;
- sqlite3_stmt *stmtd;
- int ret;
- unsigned int type;
- unsigned int size;
- unsigned int priority;
- unsigned int anonymity;
- struct GNUNET_TIME_Absolute expiration;
- const GNUNET_HashCode *key;
- const void *data;
-
- plugin = nc->plugin;
- plugin->next_task = GNUNET_SCHEDULER_NO_TASK;
- plugin->next_task_nc = NULL;
- if ( (GNUNET_YES == nc->end_it) ||
- (GNUNET_OK != (nc->prep(nc->prep_cls,
- nc))) )
- {
- END:
- nc->iter (nc->iter_cls,
- NULL, NULL, 0, NULL, 0, 0, 0,
- GNUNET_TIME_UNIT_ZERO_ABS, 0);
- nc->prep (nc->prep_cls, NULL);
- GNUNET_free (nc);
- return;
- }
-
- rowid = sqlite3_column_int64 (nc->stmt, 7);
- nc->last_rowid = rowid;
- type = sqlite3_column_int (nc->stmt, 1);
- size = sqlite3_column_bytes (nc->stmt, 6);
- if (sqlite3_column_bytes (nc->stmt, 5) != sizeof (GNUNET_HashCode))
- {
- GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING,
- "sqlite",
- _("Invalid data in database. Trying to fix (by deletion).\n"));
- if (SQLITE_OK != sqlite3_reset (nc->stmt))
- LOG_SQLITE (nc->plugin, NULL,
- GNUNET_ERROR_TYPE_ERROR |
- GNUNET_ERROR_TYPE_BULK, "sqlite3_reset");
- if (sq_prepare
- (nc->plugin->dbh,
- "DELETE FROM gn080 WHERE NOT LENGTH(hash) = ?",
- &stmtd) != SQLITE_OK)
- {
- LOG_SQLITE (nc->plugin, NULL,
- GNUNET_ERROR_TYPE_ERROR |
- GNUNET_ERROR_TYPE_BULK,
- "sq_prepare");
- goto END;
- }
-
- if (SQLITE_OK != sqlite3_bind_int (stmtd, 1, sizeof (GNUNET_HashCode)))
- LOG_SQLITE (nc->plugin, NULL,
- GNUNET_ERROR_TYPE_ERROR |
- GNUNET_ERROR_TYPE_BULK, "sqlite3_bind_int");
- if (SQLITE_DONE != sqlite3_step (stmtd))
- LOG_SQLITE (nc->plugin, NULL,
- GNUNET_ERROR_TYPE_ERROR |
- GNUNET_ERROR_TYPE_BULK, "sqlite3_step");
- if (SQLITE_OK != sqlite3_finalize (stmtd))
- LOG_SQLITE (nc->plugin, NULL,
- GNUNET_ERROR_TYPE_ERROR |
- GNUNET_ERROR_TYPE_BULK, "sqlite3_finalize");
- goto END;
- }
-
- priority = sqlite3_column_int (nc->stmt, 2);
- anonymity = sqlite3_column_int (nc->stmt, 3);
- expiration.abs_value = sqlite3_column_int64 (nc->stmt, 4);
- key = sqlite3_column_blob (nc->stmt, 5);
- nc->lastPriority = priority;
- nc->lastExpiration = expiration;
- memcpy (&nc->lastKey, key, sizeof(GNUNET_HashCode));
- data = sqlite3_column_blob (nc->stmt, 6);
- nc->count++;
- ret = nc->iter (nc->iter_cls,
- nc,
- key,
- size,
- data,
- type,
- priority,
- anonymity,
- expiration,
- rowid);
- if (ret == GNUNET_SYSERR)
- {
- nc->end_it = GNUNET_YES;
- return;
- }
-#if DEBUG_SQLITE
- if (ret == GNUNET_NO)
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
- "sqlite",
- "Asked to remove entry %llu (%u bytes)\n",
- (unsigned long long) rowid,
- size + GNUNET_DATASTORE_ENTRY_OVERHEAD);
-#endif
- if ( (ret == GNUNET_NO) &&
- (GNUNET_OK == delete_by_rowid (plugin, rowid)) )
- {
- plugin->env->duc (plugin->env->cls,
- - (size + GNUNET_DATASTORE_ENTRY_OVERHEAD));
-#if DEBUG_SQLITE
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
- "sqlite",
- "Removed entry %llu (%u bytes)\n",
- (unsigned long long) rowid,
- size + GNUNET_DATASTORE_ENTRY_OVERHEAD);
-#endif
- }
-}
-
-
-/**
- * Function invoked on behalf of a "PluginIterator"
- * asking the database plugin to call the iterator
- * with the next item.
- *
- * @param next_cls whatever argument was given
- * to the PluginIterator as "next_cls".
- * @param end_it set to GNUNET_YES if we
- * should terminate the iteration early
- * (iterator should be still called once more
- * to signal the end of the iteration).
- */
-static void
-sqlite_next_request (void *next_cls,
- int end_it)
-{
- struct NextContext * nc= next_cls;
-
- if (GNUNET_YES == end_it)
- nc->end_it = GNUNET_YES;
- nc->plugin->next_task_nc = nc;
- nc->plugin->next_task = GNUNET_SCHEDULER_add_now (nc->plugin->env->sched,
- &sqlite_next_request_cont,
- nc);
-}
-
-
-
/**
* Store an item in the datastore.
*
* @param type type of the content
* @param priority priority of the content
* @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 an error message
* @return GNUNET_OK on success
*/
static int
-sqlite_plugin_put (void *cls,
- const GNUNET_HashCode * key,
- uint32_t size,
- const void *data,
- enum GNUNET_BLOCK_Type type,
- uint32_t priority,
- uint32_t anonymity,
- struct GNUNET_TIME_Absolute expiration,
- char ** msg)
+sqlite_plugin_put (void *cls, const GNUNET_HashCode * key, uint32_t size,
+ const void *data, enum GNUNET_BLOCK_Type type,
+ uint32_t priority, uint32_t anonymity, uint32_t replication,
+ struct GNUNET_TIME_Absolute expiration, char **msg)
{
struct Plugin *plugin = cls;
int n;
+ int ret;
sqlite3_stmt *stmt;
GNUNET_HashCode vhash;
+ uint64_t rvalue;
+ if (size > MAX_ITEM_SIZE)
+ return GNUNET_SYSERR;
#if DEBUG_SQLITE
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
- "sqlite",
- "Storing in database block with type %u/key `%s'/priority %u/expiration %llu (%lld).\n",
- type,
- GNUNET_h2s(key),
- priority,
- (unsigned long long) GNUNET_TIME_absolute_get_remaining (expiration).rel_value,
- (long long) expiration.abs_value);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "sqlite",
+ "Storing in database block with type %u/key `%s'/priority %u/expiration in %llu ms (%lld).\n",
+ type, GNUNET_h2s (key), priority,
+ (unsigned long long)
+ GNUNET_TIME_absolute_get_remaining (expiration).rel_value,
+ (long long) expiration.abs_value);
#endif
GNUNET_CRYPTO_hash (data, size, &vhash);
stmt = plugin->insertContent;
- if ((SQLITE_OK != sqlite3_bind_int (stmt, 1, size)) ||
+ rvalue = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_WEAK, UINT64_MAX);
+ if ((SQLITE_OK != sqlite3_bind_int (stmt, 1, replication)) ||
(SQLITE_OK != sqlite3_bind_int (stmt, 2, type)) ||
(SQLITE_OK != sqlite3_bind_int (stmt, 3, priority)) ||
(SQLITE_OK != sqlite3_bind_int (stmt, 4, anonymity)) ||
(SQLITE_OK != sqlite3_bind_int64 (stmt, 5, expiration.abs_value)) ||
+ (SQLITE_OK != sqlite3_bind_int64 (stmt, 6, rvalue)) ||
(SQLITE_OK !=
- sqlite3_bind_blob (stmt, 6, key, sizeof (GNUNET_HashCode),
+ sqlite3_bind_blob (stmt, 7, key, sizeof (GNUNET_HashCode),
SQLITE_TRANSIENT)) ||
(SQLITE_OK !=
- sqlite3_bind_blob (stmt, 7, &vhash, sizeof (GNUNET_HashCode),
- SQLITE_TRANSIENT))
- || (SQLITE_OK !=
- sqlite3_bind_blob (stmt, 8, data, size,
- SQLITE_TRANSIENT)))
- {
- LOG_SQLITE (plugin,
- msg,
- GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK, "sqlite3_bind_XXXX");
- if (SQLITE_OK != sqlite3_reset (stmt))
- LOG_SQLITE (plugin, NULL,
- GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK, "sqlite3_reset");
- return GNUNET_SYSERR;
- }
+ sqlite3_bind_blob (stmt, 8, &vhash, sizeof (GNUNET_HashCode),
+ SQLITE_TRANSIENT)) ||
+ (SQLITE_OK != sqlite3_bind_blob (stmt, 9, data, size, SQLITE_TRANSIENT)))
+ {
+ LOG_SQLITE (plugin, msg, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_bind_XXXX");
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ LOG_SQLITE (plugin, NULL,
+ GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ return GNUNET_SYSERR;
+ }
n = sqlite3_step (stmt);
- if (n != SQLITE_DONE)
- {
- if (n == SQLITE_BUSY)
- {
- LOG_SQLITE (plugin, msg,
- GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK, "sqlite3_step");
- sqlite3_reset (stmt);
- GNUNET_break (0);
- return GNUNET_NO;
- }
- LOG_SQLITE (plugin, msg,
- GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK, "sqlite3_step");
- sqlite3_reset (stmt);
- database_shutdown (plugin);
- database_setup (plugin->env->cfg,
- plugin);
- return GNUNET_SYSERR;
- }
- if (SQLITE_OK != sqlite3_reset (stmt))
- LOG_SQLITE (plugin, NULL,
- GNUNET_ERROR_TYPE_ERROR |
- GNUNET_ERROR_TYPE_BULK, "sqlite3_reset");
- plugin->env->duc (plugin->env->cls,
- size + GNUNET_DATASTORE_ENTRY_OVERHEAD);
+ switch (n)
+ {
+ case SQLITE_DONE:
+ plugin->env->duc (plugin->env->cls, size + GNUNET_DATASTORE_ENTRY_OVERHEAD);
#if DEBUG_SQLITE
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
- "sqlite",
- "Stored new entry (%u bytes)\n",
- size + GNUNET_DATASTORE_ENTRY_OVERHEAD);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "sqlite",
+ "Stored new entry (%u bytes)\n",
+ size + GNUNET_DATASTORE_ENTRY_OVERHEAD);
#endif
- return GNUNET_OK;
+ ret = GNUNET_OK;
+ break;
+ case SQLITE_BUSY:
+ GNUNET_break (0);
+ LOG_SQLITE (plugin, msg, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_step");
+ ret = GNUNET_SYSERR;
+ break;
+ default:
+ LOG_SQLITE (plugin, msg, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_step");
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ LOG_SQLITE (plugin, NULL,
+ GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ database_shutdown (plugin);
+ database_setup (plugin->env->cfg, plugin);
+ return GNUNET_SYSERR;
+ }
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ LOG_SQLITE (plugin, NULL, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ return ret;
}
* @return GNUNET_OK on success
*/
static int
-sqlite_plugin_update (void *cls,
- uint64_t uid,
- int delta, struct GNUNET_TIME_Absolute expire,
- char **msg)
+sqlite_plugin_update (void *cls, uint64_t uid, int delta,
+ struct GNUNET_TIME_Absolute expire, char **msg)
{
struct Plugin *plugin = cls;
int n;
- sqlite3_bind_int (plugin->updPrio, 1, delta);
- sqlite3_bind_int64 (plugin->updPrio, 2, expire.abs_value);
- sqlite3_bind_int64 (plugin->updPrio, 3, uid);
+ if ((SQLITE_OK != sqlite3_bind_int (plugin->updPrio, 1, delta)) ||
+ (SQLITE_OK != sqlite3_bind_int64 (plugin->updPrio, 2, expire.abs_value))
+ || (SQLITE_OK != sqlite3_bind_int64 (plugin->updPrio, 3, uid)))
+ {
+ LOG_SQLITE (plugin, msg, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_bind_XXXX");
+ if (SQLITE_OK != sqlite3_reset (plugin->updPrio))
+ LOG_SQLITE (plugin, NULL,
+ GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ return GNUNET_SYSERR;
+
+ }
n = sqlite3_step (plugin->updPrio);
- if (n != SQLITE_DONE)
- LOG_SQLITE (plugin, msg,
- GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK,
- "sqlite3_step");
+ if (SQLITE_OK != sqlite3_reset (plugin->updPrio))
+ LOG_SQLITE (plugin, NULL, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ switch (n)
+ {
+ case SQLITE_DONE:
#if DEBUG_SQLITE
- else
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
- "sqlite",
- "Block updated\n");
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "sqlite", "Block updated\n");
#endif
- sqlite3_reset (plugin->updPrio);
-
- if (n == SQLITE_BUSY)
+ return GNUNET_OK;
+ case SQLITE_BUSY:
+ LOG_SQLITE (plugin, msg, GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_step");
return GNUNET_NO;
- return n == SQLITE_DONE ? GNUNET_OK : GNUNET_SYSERR;
+ default:
+ LOG_SQLITE (plugin, msg, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_step");
+ return GNUNET_SYSERR;
+ }
}
/**
- * Internal context for an iteration.
- */
-struct IterContext
-{
- /**
- * FIXME.
- */
- sqlite3_stmt *stmt_1;
-
- /**
- * FIXME.
- */
- sqlite3_stmt *stmt_2;
-
- /**
- * FIXME.
- */
- int is_asc;
-
- /**
- * FIXME.
- */
- int is_prio;
-
- /**
- * FIXME.
- */
- int is_migr;
-
- /**
- * FIXME.
- */
- int limit_nonanonymous;
-
- /**
- * Desired type for blocks returned by this iterator.
- */
- enum GNUNET_BLOCK_Type type;
-};
-
-
-/**
- * Prepare our SQL query to obtain the next record from the database.
+ * Execute statement that gets a row and call the callback
+ * with the result. Resets the statement afterwards.
*
- * @param cls our "struct IterContext"
- * @param nc NULL to terminate the iteration, otherwise our context for
- * getting the next result.
- * @return GNUNET_OK on success, GNUNET_NO if there are no more results,
- * GNUNET_SYSERR on error (or end of iteration)
+ * @param plugin the plugin
+ * @param stmt the statement
+ * @param proc processor to call
+ * @param proc_cls closure for 'proc'
*/
-static int
-iter_next_prepare (void *cls,
- struct NextContext *nc)
+static void
+execute_get (struct Plugin *plugin, sqlite3_stmt * stmt,
+ PluginDatumProcessor proc, void *proc_cls)
{
- struct IterContext *ic = cls;
- struct Plugin *plugin;
+ int n;
+ struct GNUNET_TIME_Absolute expiration;
+ unsigned long long rowid;
+ unsigned int size;
int ret;
- if (nc == NULL)
+ n = sqlite3_step (stmt);
+ switch (n)
+ {
+ case SQLITE_ROW:
+ size = sqlite3_column_bytes (stmt, 5);
+ rowid = sqlite3_column_int64 (stmt, 6);
+ if (sqlite3_column_bytes (stmt, 4) != sizeof (GNUNET_HashCode))
{
+ GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, "sqlite",
+ _
+ ("Invalid data in database. Trying to fix (by deletion).\n"));
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ LOG_SQLITE (plugin, NULL,
+ GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ if (GNUNET_OK == delete_by_rowid (plugin, rowid))
+ plugin->env->duc (plugin->env->cls,
+ -(size + GNUNET_DATASTORE_ENTRY_OVERHEAD));
+ break;
+ }
+ expiration.abs_value = sqlite3_column_int64 (stmt, 3);
#if DEBUG_SQLITE
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Asked to clean up iterator state.\n");
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "sqlite",
+ "Found reply in database with expiration %llu\n",
+ (unsigned long long) expiration.abs_value);
#endif
- sqlite3_finalize (ic->stmt_1);
- sqlite3_finalize (ic->stmt_2);
- return GNUNET_SYSERR;
- }
- sqlite3_reset (ic->stmt_1);
- sqlite3_reset (ic->stmt_2);
- plugin = nc->plugin;
- if (ic->is_prio)
- {
-#if DEBUG_SQLITE
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Restricting to results larger than the last priority %u\n",
- nc->lastPriority);
-#endif
- sqlite3_bind_int (ic->stmt_1, 1, nc->lastPriority);
- sqlite3_bind_int (ic->stmt_2, 1, nc->lastPriority);
- }
- else
- {
-#if DEBUG_SQLITE
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Restricting to results larger than the last expiration %llu\n",
- (unsigned long long) nc->lastExpiration.abs_value);
-#endif
- sqlite3_bind_int64 (ic->stmt_1, 1, nc->lastExpiration.abs_value);
- sqlite3_bind_int64 (ic->stmt_2, 1, nc->lastExpiration.abs_value);
- }
-#if DEBUG_SQLITE
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Restricting to results larger than the last key `%s'\n",
- GNUNET_h2s(&nc->lastKey));
-#endif
- sqlite3_bind_blob (ic->stmt_1, 2,
- &nc->lastKey,
- sizeof (GNUNET_HashCode),
- SQLITE_TRANSIENT);
- if (SQLITE_ROW == (ret = sqlite3_step (ic->stmt_1)))
- {
-#if DEBUG_SQLITE
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Result found using iterator 1\n");
-#endif
- nc->stmt = ic->stmt_1;
- return GNUNET_OK;
- }
- if (ret != SQLITE_DONE)
- {
+ ret = proc (proc_cls, sqlite3_column_blob (stmt, 4) /* key */ ,
+ size, sqlite3_column_blob (stmt, 5) /* data */ ,
+ sqlite3_column_int (stmt, 0) /* type */ ,
+ sqlite3_column_int (stmt, 1) /* priority */ ,
+ sqlite3_column_int (stmt, 2) /* anonymity */ ,
+ expiration, rowid);
+ if (SQLITE_OK != sqlite3_reset (stmt))
LOG_SQLITE (plugin, NULL,
- GNUNET_ERROR_TYPE_ERROR |
- GNUNET_ERROR_TYPE_BULK,
- "sqlite3_step");
- return GNUNET_SYSERR;
- }
- if (SQLITE_OK != sqlite3_reset (ic->stmt_1))
- LOG_SQLITE (plugin, NULL,
- GNUNET_ERROR_TYPE_ERROR |
- GNUNET_ERROR_TYPE_BULK,
- "sqlite3_reset");
- if (SQLITE_ROW == (ret = sqlite3_step (ic->stmt_2)))
- {
-#if DEBUG_SQLITE
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Result found using iterator 2\n");
-#endif
- nc->stmt = ic->stmt_2;
- return GNUNET_OK;
- }
- if (ret != SQLITE_DONE)
- {
- LOG_SQLITE (plugin, NULL,
- GNUNET_ERROR_TYPE_ERROR |
- GNUNET_ERROR_TYPE_BULK,
- "sqlite3_step");
- return GNUNET_SYSERR;
- }
- if (SQLITE_OK != sqlite3_reset (ic->stmt_2))
- LOG_SQLITE (plugin, NULL,
- GNUNET_ERROR_TYPE_ERROR |
- GNUNET_ERROR_TYPE_BULK,
- "sqlite3_reset");
-#if DEBUG_SQLITE
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "No result found using either iterator\n");
-#endif
- return GNUNET_NO;
-}
-
-
-/**
- * Call a method for each key in the database and
- * call the callback method on it.
- *
- * @param plugin our plugin context
- * @param type entries of which type should be considered?
- * @param is_asc are we iterating in ascending order?
- * @param is_prio are we iterating by priority (otherwise by expiration)
- * @param is_migr are we iterating in migration order?
- * @param limit_nonanonymous are we restricting results to those with anonymity
- * level zero?
- * @param stmt_str_1 first SQL statement to execute
- * @param stmt_str_2 SQL statement to execute to get "more" results (inner iteration)
- * @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
- */
-static void
-basic_iter (struct Plugin *plugin,
- enum GNUNET_BLOCK_Type type,
- int is_asc,
- int is_prio,
- int is_migr,
- int limit_nonanonymous,
- const char *stmt_str_1,
- const char *stmt_str_2,
- PluginIterator iter,
- void *iter_cls)
-{
- struct NextContext *nc;
- struct IterContext *ic;
- sqlite3_stmt *stmt_1;
- sqlite3_stmt *stmt_2;
-
-#if DEBUG_SQLITE
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "At %llu, using queries `%s' and `%s'\n",
- (unsigned long long) GNUNET_TIME_absolute_get ().abs_value,
- stmt_str_1,
- stmt_str_2);
-#endif
- if (sq_prepare (plugin->dbh, stmt_str_1, &stmt_1) != SQLITE_OK)
- {
+ GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ if ((GNUNET_NO == ret) && (GNUNET_OK == delete_by_rowid (plugin, rowid)))
+ plugin->env->duc (plugin->env->cls,
+ -(size + GNUNET_DATASTORE_ENTRY_OVERHEAD));
+ return;
+ case SQLITE_DONE:
+ /* database must be empty */
+ if (SQLITE_OK != sqlite3_reset (stmt))
LOG_SQLITE (plugin, NULL,
- GNUNET_ERROR_TYPE_ERROR |
- GNUNET_ERROR_TYPE_BULK, "sqlite3_prepare_v2");
- iter (iter_cls, NULL, NULL, 0, NULL, 0, 0, 0, GNUNET_TIME_UNIT_ZERO_ABS, 0);
- return;
- }
- if (sq_prepare (plugin->dbh, stmt_str_2, &stmt_2) != SQLITE_OK)
- {
+ GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ break;
+ case SQLITE_BUSY:
+ case SQLITE_ERROR:
+ case SQLITE_MISUSE:
+ default:
+ LOG_SQLITE (plugin, NULL, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_step");
+ if (SQLITE_OK != sqlite3_reset (stmt))
LOG_SQLITE (plugin, NULL,
- GNUNET_ERROR_TYPE_ERROR |
- GNUNET_ERROR_TYPE_BULK, "sqlite3_prepare_v2");
- sqlite3_finalize (stmt_1);
- iter (iter_cls, NULL, NULL, 0, NULL, 0, 0, 0, GNUNET_TIME_UNIT_ZERO_ABS, 0);
- return;
- }
- nc = GNUNET_malloc (sizeof(struct NextContext) +
- sizeof(struct IterContext));
- nc->plugin = plugin;
- nc->iter = iter;
- nc->iter_cls = iter_cls;
- nc->stmt = NULL;
- ic = (struct IterContext*) &nc[1];
- ic->stmt_1 = stmt_1;
- ic->stmt_2 = stmt_2;
- ic->type = type;
- ic->is_asc = is_asc;
- ic->is_prio = is_prio;
- ic->is_migr = is_migr;
- ic->limit_nonanonymous = limit_nonanonymous;
- nc->prep = &iter_next_prepare;
- nc->prep_cls = ic;
- if (is_asc)
- {
- nc->lastPriority = 0;
- nc->lastExpiration.abs_value = 0;
- memset (&nc->lastKey, 0, sizeof (GNUNET_HashCode));
- }
- else
- {
- nc->lastPriority = 0x7FFFFFFF;
- nc->lastExpiration.abs_value = 0x7FFFFFFFFFFFFFFFLL;
- memset (&nc->lastKey, 255, sizeof (GNUNET_HashCode));
- }
- sqlite_next_request (nc, GNUNET_NO);
-}
-
-
-/**
- * Select a subset of the items in the datastore and call
- * the given iterator for each of them.
- *
- * @param cls our plugin context
- * @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
- */
-static void
-sqlite_plugin_iter_low_priority (void *cls,
- enum GNUNET_BLOCK_Type type,
- PluginIterator iter,
- void *iter_cls)
-{
- basic_iter (cls,
- type,
- GNUNET_YES, GNUNET_YES,
- GNUNET_NO, GNUNET_NO,
- SELECT_IT_LOW_PRIORITY_1,
- SELECT_IT_LOW_PRIORITY_2,
- iter, iter_cls);
-}
-
-
-/**
- * Select a subset of the items in the datastore and call
- * the given iterator for each of them.
- *
- * @param cls our plugin context
- * @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
- */
-static void
-sqlite_plugin_iter_zero_anonymity (void *cls,
- enum GNUNET_BLOCK_Type type,
- PluginIterator iter,
- void *iter_cls)
-{
- struct GNUNET_TIME_Absolute now;
- char *q1;
- char *q2;
-
- now = GNUNET_TIME_absolute_get ();
- GNUNET_asprintf (&q1, SELECT_IT_NON_ANONYMOUS_1,
- (unsigned long long) now.abs_value);
- GNUNET_asprintf (&q2, SELECT_IT_NON_ANONYMOUS_2,
- (unsigned long long) now.abs_value);
- basic_iter (cls,
- type,
- GNUNET_NO, GNUNET_YES,
- GNUNET_NO, GNUNET_YES,
- q1,
- q2,
- iter, iter_cls);
- GNUNET_free (q1);
- GNUNET_free (q2);
+ GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ GNUNET_break (0);
+ database_shutdown (plugin);
+ database_setup (plugin->env->cfg, plugin);
+ break;
+ }
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ LOG_SQLITE (plugin, NULL, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ proc (proc_cls, NULL, 0, NULL, 0, 0, 0, GNUNET_TIME_UNIT_ZERO_ABS, 0);
}
/**
* Select a subset of the items in the datastore and call
- * the given iterator for each of them.
- *
- * @param cls our plugin context
- * @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
- */
-static void
-sqlite_plugin_iter_ascending_expiration (void *cls,
- enum GNUNET_BLOCK_Type type,
- PluginIterator iter,
- void *iter_cls)
-{
- struct GNUNET_TIME_Absolute now;
- char *q1;
- char *q2;
-
- now = GNUNET_TIME_absolute_get ();
- GNUNET_asprintf (&q1, SELECT_IT_EXPIRATION_TIME_1,
- (unsigned long long) 0*now.abs_value);
- GNUNET_asprintf (&q2, SELECT_IT_EXPIRATION_TIME_2,
- (unsigned long long) 0*now.abs_value);
- basic_iter (cls,
- type,
- GNUNET_YES, GNUNET_NO,
- GNUNET_NO, GNUNET_NO,
- q1, q2,
- iter, iter_cls);
- GNUNET_free (q1);
- GNUNET_free (q2);
-}
-
-
-/**
- * Select a subset of the items in the datastore and call
- * the given iterator for each of them.
+ * the given processor for the item.
*
* @param cls our plugin context
+ * @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;
+ * @param proc 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_cls closure for proc
*/
static void
-sqlite_plugin_iter_migration_order (void *cls,
- enum GNUNET_BLOCK_Type type,
- PluginIterator iter,
- void *iter_cls)
-{
- struct GNUNET_TIME_Absolute now;
- char *q;
-
- now = GNUNET_TIME_absolute_get ();
- GNUNET_asprintf (&q, SELECT_IT_MIGRATION_ORDER_2,
- (unsigned long long) now.abs_value);
- basic_iter (cls,
- type,
- GNUNET_NO, GNUNET_NO,
- GNUNET_YES, GNUNET_NO,
- SELECT_IT_MIGRATION_ORDER_1,
- q,
- iter, iter_cls);
- GNUNET_free (q);
-}
-
-
-/**
- * Call sqlite using the already prepared query to get
- * the next result.
- *
- * @param cls not used
- * @param nc context with the prepared query
- * @return GNUNET_OK on success, GNUNET_SYSERR on error, GNUNET_NO if
- * there are no more results
- */
-static int
-all_next_prepare (void *cls,
- struct NextContext *nc)
+sqlite_plugin_get_zero_anonymity (void *cls, uint64_t offset,
+ enum GNUNET_BLOCK_Type type,
+ PluginDatumProcessor proc, void *proc_cls)
{
- struct Plugin *plugin;
- int ret;
+ struct Plugin *plugin = cls;
+ sqlite3_stmt *stmt;
- if (nc == NULL)
- {
-#if DEBUG_SQLITE
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Asked to clean up iterator state.\n");
-#endif
- return GNUNET_SYSERR;
- }
- plugin = nc->plugin;
- if (SQLITE_ROW == (ret = sqlite3_step (nc->stmt)))
- {
- return GNUNET_OK;
- }
- if (ret != SQLITE_DONE)
- {
+ GNUNET_assert (type != GNUNET_BLOCK_TYPE_ANY);
+ stmt = plugin->selZeroAnon;
+ if ((SQLITE_OK != sqlite3_bind_int (stmt, 1, type)) ||
+ (SQLITE_OK != sqlite3_bind_int64 (stmt, 2, offset)))
+ {
+ LOG_SQLITE (plugin, NULL, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_bind_XXXX");
+ if (SQLITE_OK != sqlite3_reset (stmt))
LOG_SQLITE (plugin, NULL,
- GNUNET_ERROR_TYPE_ERROR |
- GNUNET_ERROR_TYPE_BULK,
- "sqlite3_step");
- return GNUNET_SYSERR;
- }
- return GNUNET_NO;
+ GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ proc (proc_cls, NULL, 0, NULL, 0, 0, 0, GNUNET_TIME_UNIT_ZERO_ABS, 0);
+ return;
+ }
+ execute_get (plugin, stmt, proc, proc_cls);
}
+
/**
- * Select a subset of the items in the datastore and call
- * the given iterator for each of them.
+ * Get results for a particular key in the datastore.
*
- * @param cls our plugin context
- * @param type entries of which type should be considered?
- * Use 0 for any type.
- * @param iter function to call on each matching value;
+ * @param cls closure
+ * @param offset offset (mod count).
+ * @param key key to match, never NULL
+ * @param vhash hash of the value, maybe NULL (to
+ * match all values that have the right key).
+ * Note that for DBlocks there is no difference
+ * betwen key and vhash, but for other blocks
+ * there may be!
+ * @param type entries of which type are relevant?
+ * Use 0 for any type.
+ * @param proc 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_cls closure for proc
*/
static void
-sqlite_plugin_iter_all_now (void *cls,
- enum GNUNET_BLOCK_Type type,
- PluginIterator iter,
- void *iter_cls)
+sqlite_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)
{
struct Plugin *plugin = cls;
- struct NextContext *nc;
+ int ret;
+ int total;
+ int limit_off;
+ unsigned int sqoff;
sqlite3_stmt *stmt;
+ char scratch[256];
- if (sq_prepare (plugin->dbh,
- "SELECT size,type,prio,anonLevel,expire,hash,value,_ROWID_ FROM gn080",
- &stmt) != SQLITE_OK)
- {
- LOG_SQLITE (plugin, NULL,
- GNUNET_ERROR_TYPE_ERROR |
- GNUNET_ERROR_TYPE_BULK, "sqlite3_prepare_v2");
- iter (iter_cls, NULL, NULL, 0, NULL, 0, 0, 0, GNUNET_TIME_UNIT_ZERO_ABS, 0);
- return;
- }
- nc = GNUNET_malloc (sizeof(struct NextContext));
- nc->plugin = plugin;
- nc->iter = iter;
- nc->iter_cls = iter_cls;
- nc->stmt = stmt;
- nc->prep = &all_next_prepare;
- nc->prep_cls = NULL;
- sqlite_next_request (nc, GNUNET_NO);
+ GNUNET_assert (proc != NULL);
+ GNUNET_assert (key != NULL);
+ GNUNET_snprintf (scratch, sizeof (scratch),
+ "SELECT count(*) FROM gn090 WHERE hash=?%s%s",
+ vhash == NULL ? "" : " AND vhash=?",
+ type == 0 ? "" : " AND type=?");
+ if (sq_prepare (plugin->dbh, scratch, &stmt) != SQLITE_OK)
+ {
+ LOG_SQLITE (plugin, NULL, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite_prepare");
+ proc (proc_cls, NULL, 0, NULL, 0, 0, 0, GNUNET_TIME_UNIT_ZERO_ABS, 0);
+ return;
+ }
+ sqoff = 1;
+ ret =
+ sqlite3_bind_blob (stmt, sqoff++, key, sizeof (GNUNET_HashCode),
+ SQLITE_TRANSIENT);
+ if ((vhash != NULL) && (ret == SQLITE_OK))
+ ret =
+ sqlite3_bind_blob (stmt, sqoff++, vhash, sizeof (GNUNET_HashCode),
+ SQLITE_TRANSIENT);
+ if ((type != 0) && (ret == SQLITE_OK))
+ ret = sqlite3_bind_int (stmt, sqoff++, type);
+ if (SQLITE_OK != ret)
+ {
+ LOG_SQLITE (plugin, NULL, GNUNET_ERROR_TYPE_ERROR, "sqlite_bind");
+ sqlite3_finalize (stmt);
+ proc (proc_cls, NULL, 0, NULL, 0, 0, 0, GNUNET_TIME_UNIT_ZERO_ABS, 0);
+ return;
+ }
+ ret = sqlite3_step (stmt);
+ if (ret != SQLITE_ROW)
+ {
+ LOG_SQLITE (plugin, NULL, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite_step");
+ sqlite3_finalize (stmt);
+ proc (proc_cls, NULL, 0, NULL, 0, 0, 0, GNUNET_TIME_UNIT_ZERO_ABS, 0);
+ return;
+ }
+ total = sqlite3_column_int (stmt, 0);
+ sqlite3_finalize (stmt);
+ if (0 == total)
+ {
+ proc (proc_cls, NULL, 0, NULL, 0, 0, 0, GNUNET_TIME_UNIT_ZERO_ABS, 0);
+ return;
+ }
+ limit_off = (int) (offset % total);
+ if (limit_off < 0)
+ limit_off += total;
+ GNUNET_snprintf (scratch, sizeof (scratch),
+ "SELECT type, prio, anonLevel, expire, hash, value, _ROWID_ "
+ "FROM gn090 WHERE hash=?%s%s "
+ "ORDER BY _ROWID_ ASC LIMIT 1 OFFSET ?",
+ vhash == NULL ? "" : " AND vhash=?",
+ type == 0 ? "" : " AND type=?");
+ if (sq_prepare (plugin->dbh, scratch, &stmt) != SQLITE_OK)
+ {
+ LOG_SQLITE (plugin, NULL, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite_prepare");
+ proc (proc_cls, NULL, 0, NULL, 0, 0, 0, GNUNET_TIME_UNIT_ZERO_ABS, 0);
+ return;
+ }
+ sqoff = 1;
+ ret =
+ sqlite3_bind_blob (stmt, sqoff++, key, sizeof (GNUNET_HashCode),
+ SQLITE_TRANSIENT);
+ if ((vhash != NULL) && (ret == SQLITE_OK))
+ ret =
+ sqlite3_bind_blob (stmt, sqoff++, vhash, sizeof (GNUNET_HashCode),
+ SQLITE_TRANSIENT);
+ if ((type != 0) && (ret == SQLITE_OK))
+ ret = sqlite3_bind_int (stmt, sqoff++, type);
+ if (ret == SQLITE_OK)
+ ret = sqlite3_bind_int64 (stmt, sqoff++, limit_off);
+ if (ret != SQLITE_OK)
+ {
+ LOG_SQLITE (plugin, NULL, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite_bind");
+ proc (proc_cls, NULL, 0, NULL, 0, 0, 0, GNUNET_TIME_UNIT_ZERO_ABS, 0);
+ return;
+ }
+ execute_get (plugin, stmt, proc, proc_cls);
+ sqlite3_finalize (stmt);
}
+
/**
- * FIXME.
+ * Context for 'repl_proc' function.
*/
-struct GetNextContext
+struct ReplCtx
{
/**
- * FIXME.
- */
- int total;
-
- /**
- * FIXME.
- */
- int off;
-
- /**
- * FIXME.
- */
- int have_vhash;
-
- /**
- * FIXME.
+ * Function to call for the result (or the NULL).
*/
- unsigned int type;
+ PluginDatumProcessor proc;
/**
- * FIXME.
+ * Closure for proc.
*/
- sqlite3_stmt *stmt;
+ void *proc_cls;
/**
- * FIXME.
+ * UID to use.
*/
- GNUNET_HashCode key;
+ uint64_t uid;
/**
- * FIXME.
+ * Yes if UID was set.
*/
- GNUNET_HashCode vhash;
+ int have_uid;
};
-
/**
- * FIXME.
+ * Wrapper for the processor for 'sqlite_plugin_replication_get'.
+ * Decrements the replication counter and calls the original
+ * processor.
+ *
+ * @param cls closure
+ * @param key key for the content
+ * @param size number of bytes in data
+ * @param data content stored
+ * @param type type of the content
+ * @param priority priority of the content
+ * @param anonymity anonymity-level for the content
+ * @param expiration expiration time for the content
+ * @param uid unique identifier for the datum;
+ * maybe 0 if no unique identifier is available
*
- * @param cls our "struct GetNextContext*"
- * @param nc FIXME
- * @return GNUNET_YES if there are more results,
- * GNUNET_NO if there are no more results,
- * GNUNET_SYSERR on internal error
+ * @return GNUNET_OK for normal return,
+ * GNUNET_NO to delete the item
*/
static int
-get_next_prepare (void *cls,
- struct NextContext *nc)
+repl_proc (void *cls, const GNUNET_HashCode * key, uint32_t size,
+ const void *data, enum GNUNET_BLOCK_Type type, uint32_t priority,
+ uint32_t anonymity, struct GNUNET_TIME_Absolute expiration,
+ uint64_t uid)
{
- struct GetNextContext *gnc = cls;
- int sqoff;
+ struct ReplCtx *rc = cls;
int ret;
- int limit_off;
- if (nc == NULL)
- {
- sqlite3_finalize (gnc->stmt);
- return GNUNET_SYSERR;
- }
- if (nc->count == gnc->total)
- return GNUNET_NO;
- if (nc->count + gnc->off == gnc->total)
- nc->last_rowid = 0;
- if (nc->count == 0)
- limit_off = gnc->off;
- else
- limit_off = 0;
- sqoff = 1;
- sqlite3_reset (nc->stmt);
- ret = sqlite3_bind_blob (nc->stmt,
- sqoff++,
- &gnc->key,
- sizeof (GNUNET_HashCode),
- SQLITE_TRANSIENT);
- if ((gnc->have_vhash) && (ret == SQLITE_OK))
- ret = sqlite3_bind_blob (nc->stmt,
- sqoff++,
- &gnc->vhash,
- sizeof (GNUNET_HashCode), SQLITE_TRANSIENT);
- if ((gnc->type != 0) && (ret == SQLITE_OK))
- ret = sqlite3_bind_int (nc->stmt, sqoff++, gnc->type);
- if (ret == SQLITE_OK)
- ret = sqlite3_bind_int64 (nc->stmt, sqoff++, nc->last_rowid + 1);
- if (ret == SQLITE_OK)
- ret = sqlite3_bind_int (nc->stmt, sqoff++, limit_off);
- if (ret != SQLITE_OK)
- return GNUNET_SYSERR;
- if (SQLITE_ROW != sqlite3_step (nc->stmt))
- return GNUNET_NO;
- return GNUNET_OK;
+ ret =
+ rc->proc (rc->proc_cls, key, size, data, type, priority, anonymity,
+ expiration, uid);
+ if (key != NULL)
+ {
+ rc->uid = uid;
+ rc->have_uid = GNUNET_YES;
+ }
+ return ret;
}
/**
- * Iterate over the results for a particular key
- * in the datastore.
+ * Get a random item for replication. Returns a single 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.
*
* @param cls closure
- * @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).
- * Note that for DBlocks there is no difference
- * betwen key and vhash, but for other blocks
- * 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 the value (once only).
+ * @param proc_cls closure for proc
*/
static void
-sqlite_plugin_get (void *cls,
- const GNUNET_HashCode * key,
- const GNUNET_HashCode * vhash,
- enum GNUNET_BLOCK_Type type,
- PluginIterator iter, void *iter_cls)
+sqlite_plugin_get_replication (void *cls, PluginDatumProcessor proc,
+ void *proc_cls)
{
struct Plugin *plugin = cls;
- struct GetNextContext *gpc;
- struct NextContext *nc;
- int ret;
- int total;
+ struct ReplCtx rc;
+ uint64_t rvalue;
+ uint32_t repl;
sqlite3_stmt *stmt;
- char scratch[256];
- int sqoff;
- GNUNET_assert (iter != NULL);
- if (key == NULL)
- {
- sqlite_plugin_iter_low_priority (cls, type, iter, iter_cls);
- return;
- }
- GNUNET_snprintf (scratch, sizeof (scratch),
- "SELECT count(*) FROM gn080 WHERE hash=:1%s%s",
- vhash == NULL ? "" : " AND vhash=:2",
- type == 0 ? "" : (vhash ==
- NULL) ? " AND type=:2" : " AND type=:3");
- if (sq_prepare (plugin->dbh, scratch, &stmt) != SQLITE_OK)
- {
+#if DEBUG_SQLITE
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "sqlite",
+ "Getting random block based on replication order.\n");
+#endif
+ rc.have_uid = GNUNET_NO;
+ rc.proc = proc;
+ rc.proc_cls = proc_cls;
+ stmt = plugin->maxRepl;
+ if (SQLITE_ROW != sqlite3_step (stmt))
+ {
+ if (SQLITE_OK != sqlite3_reset (stmt))
LOG_SQLITE (plugin, NULL,
- GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK, "sqlite_prepare");
- iter (iter_cls, NULL, NULL, 0, NULL, 0, 0, 0, GNUNET_TIME_UNIT_ZERO_ABS, 0);
- return;
- }
- sqoff = 1;
- ret = sqlite3_bind_blob (stmt,
- sqoff++,
- key, sizeof (GNUNET_HashCode), SQLITE_TRANSIENT);
- if ((vhash != NULL) && (ret == SQLITE_OK))
- ret = sqlite3_bind_blob (stmt,
- sqoff++,
- vhash,
- sizeof (GNUNET_HashCode), SQLITE_TRANSIENT);
- if ((type != 0) && (ret == SQLITE_OK))
- ret = sqlite3_bind_int (stmt, sqoff++, type);
- if (SQLITE_OK != ret)
- {
+ GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ /* DB empty */
+ proc (proc_cls, NULL, 0, NULL, 0, 0, 0, GNUNET_TIME_UNIT_ZERO_ABS, 0);
+ return;
+ }
+ repl = sqlite3_column_int (stmt, 0);
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ LOG_SQLITE (plugin, NULL, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ stmt = plugin->selRepl;
+ rvalue = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_WEAK, UINT64_MAX);
+ if (SQLITE_OK != sqlite3_bind_int64 (stmt, 1, rvalue))
+ {
+ LOG_SQLITE (plugin, NULL, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_bind_XXXX");
+ if (SQLITE_OK != sqlite3_reset (stmt))
LOG_SQLITE (plugin, NULL,
- GNUNET_ERROR_TYPE_ERROR, "sqlite_bind");
- sqlite3_reset (stmt);
- sqlite3_finalize (stmt);
- iter (iter_cls, NULL, NULL, 0, NULL, 0, 0, 0, GNUNET_TIME_UNIT_ZERO_ABS, 0);
- return;
- }
- ret = sqlite3_step (stmt);
- if (ret != SQLITE_ROW)
- {
+ GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ proc (proc_cls, NULL, 0, NULL, 0, 0, 0, GNUNET_TIME_UNIT_ZERO_ABS, 0);
+ return;
+ }
+ if (SQLITE_OK != sqlite3_bind_int (stmt, 2, repl))
+ {
+ LOG_SQLITE (plugin, NULL, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_bind_XXXX");
+ if (SQLITE_OK != sqlite3_reset (stmt))
LOG_SQLITE (plugin, NULL,
- GNUNET_ERROR_TYPE_ERROR| GNUNET_ERROR_TYPE_BULK,
- "sqlite_step");
- sqlite3_reset (stmt);
- sqlite3_finalize (stmt);
- iter (iter_cls, NULL, NULL, 0, NULL, 0, 0, 0, GNUNET_TIME_UNIT_ZERO_ABS, 0);
- return;
- }
- total = sqlite3_column_int (stmt, 0);
- sqlite3_reset (stmt);
- sqlite3_finalize (stmt);
- if (0 == total)
+ GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ proc (proc_cls, NULL, 0, NULL, 0, 0, 0, GNUNET_TIME_UNIT_ZERO_ABS, 0);
+ return;
+ }
+ execute_get (plugin, stmt, &repl_proc, &rc);
+ if (GNUNET_YES == rc.have_uid)
+ {
+ if (SQLITE_OK != sqlite3_bind_int64 (plugin->updRepl, 1, rc.uid))
{
- iter (iter_cls, NULL, NULL, 0, NULL, 0, 0, 0, GNUNET_TIME_UNIT_ZERO_ABS, 0);
+ LOG_SQLITE (plugin, NULL,
+ GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_bind_XXXX");
+ if (SQLITE_OK != sqlite3_reset (plugin->updRepl))
+ LOG_SQLITE (plugin, NULL,
+ GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
return;
}
+ if (SQLITE_DONE != sqlite3_step (plugin->updRepl))
+ LOG_SQLITE (plugin, NULL,
+ GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_step");
+ if (SQLITE_OK != sqlite3_reset (plugin->updRepl))
+ LOG_SQLITE (plugin, NULL,
+ GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ }
+}
- GNUNET_snprintf (scratch, sizeof (scratch),
- "SELECT size, type, prio, anonLevel, expire, hash, value, _ROWID_ "
- "FROM gn080 WHERE hash=:1%s%s AND _ROWID_ >= :%d "
- "ORDER BY _ROWID_ ASC LIMIT 1 OFFSET :d",
- vhash == NULL ? "" : " AND vhash=:2",
- type == 0 ? "" : (vhash ==
- NULL) ? " AND type=:2" : " AND type=:3",
- sqoff, sqoff + 1);
- if (sq_prepare (plugin->dbh, scratch, &stmt) != SQLITE_OK)
- {
+
+
+/**
+ * Get a random item that has expired or has low priority.
+ * Call 'proc' with all values ZERO or NULL if the datastore is empty.
+ *
+ * @param cls closure
+ * @param proc function to call the value (once only).
+ * @param proc_cls closure for proc
+ */
+static void
+sqlite_plugin_get_expiration (void *cls, PluginDatumProcessor proc,
+ void *proc_cls)
+{
+ struct Plugin *plugin = cls;
+ sqlite3_stmt *stmt;
+ struct GNUNET_TIME_Absolute now;
+
+#if DEBUG_SQLITE
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "sqlite",
+ "Getting random block based on expiration and priority order.\n");
+#endif
+ now = GNUNET_TIME_absolute_get ();
+ stmt = plugin->selExpi;
+ if (SQLITE_OK != sqlite3_bind_int64 (stmt, 1, now.abs_value))
+ {
+ LOG_SQLITE (plugin, NULL, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_bind_XXXX");
+ if (SQLITE_OK != sqlite3_reset (stmt))
LOG_SQLITE (plugin, NULL,
- GNUNET_ERROR_TYPE_ERROR |
- GNUNET_ERROR_TYPE_BULK, "sqlite_prepare");
- iter (iter_cls, NULL, NULL, 0, NULL, 0, 0, 0, GNUNET_TIME_UNIT_ZERO_ABS, 0);
- return;
- }
- nc = GNUNET_malloc (sizeof(struct NextContext) +
- sizeof(struct GetNextContext));
- nc->plugin = plugin;
- nc->iter = iter;
- nc->iter_cls = iter_cls;
- nc->stmt = stmt;
- gpc = (struct GetNextContext*) &nc[1];
- gpc->total = total;
- gpc->type = type;
- gpc->key = *key;
- gpc->stmt = stmt; /* alias used for freeing at the end! */
- if (NULL != vhash)
- {
- gpc->have_vhash = GNUNET_YES;
- gpc->vhash = *vhash;
- }
- gpc->off = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, total);
- nc->prep = &get_next_prepare;
- nc->prep_cls = gpc;
- sqlite_next_request (nc, GNUNET_NO);
+ GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ proc (proc_cls, NULL, 0, NULL, 0, 0, 0, GNUNET_TIME_UNIT_ZERO_ABS, 0);
+ return;
+ }
+ execute_get (plugin, stmt, proc, proc_cls);
}
*
* @param cls our plugin context
*/
-static void
+static void
sqlite_plugin_drop (void *cls)
{
struct Plugin *plugin = cls;
+
plugin->drop_on_shutdown = GNUNET_YES;
}
+/**
+ * Get an estimate of how much space the database is
+ * currently using.
+ *
+ * @param cls the 'struct Plugin'
+ * @return the size of the database on disk (estimate)
+ */
static unsigned long long
-sqlite_plugin_get_size (void *cls)
+sqlite_plugin_estimate_size (void *cls)
{
struct Plugin *plugin = cls;
sqlite3_stmt *stmt;
uint64_t pages;
uint64_t page_size;
+
#if ENULL_DEFINED
char *e;
#endif
if (SQLITE_VERSION_NUMBER < 3006000)
- {
- GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING,
- "datastore-sqlite",
- _("sqlite version to old to determine size, assuming zero\n"));
- return 0;
- }
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, "datastore-sqlite",
+ _
+ ("sqlite version to old to determine size, assuming zero\n"));
+ return 0;
+ }
+ CHECK (SQLITE_OK == sqlite3_exec (plugin->dbh, "VACUUM", NULL, NULL, ENULL));
CHECK (SQLITE_OK ==
- sqlite3_exec (plugin->dbh,
- "VACUUM", NULL, NULL, ENULL));
- CHECK (SQLITE_OK ==
- sqlite3_exec (plugin->dbh,
- "PRAGMA auto_vacuum=INCREMENTAL", NULL, NULL, ENULL));
- CHECK (SQLITE_OK ==
- sq_prepare (plugin->dbh,
- "PRAGMA page_count",
- &stmt));
- if (SQLITE_ROW ==
- sqlite3_step (stmt))
+ sqlite3_exec (plugin->dbh, "PRAGMA auto_vacuum=INCREMENTAL", NULL,
+ NULL, ENULL));
+ CHECK (SQLITE_OK == sq_prepare (plugin->dbh, "PRAGMA page_count", &stmt));
+ if (SQLITE_ROW == sqlite3_step (stmt))
pages = sqlite3_column_int64 (stmt, 0);
else
pages = 0;
sqlite3_finalize (stmt);
- CHECK (SQLITE_OK ==
- sq_prepare (plugin->dbh,
- "PRAGMA page_size",
- &stmt));
- CHECK (SQLITE_ROW ==
- sqlite3_step (stmt));
+ CHECK (SQLITE_OK == sq_prepare (plugin->dbh, "PRAGMA page_size", &stmt));
+ CHECK (SQLITE_ROW == sqlite3_step (stmt));
page_size = sqlite3_column_int64 (stmt, 0);
sqlite3_finalize (stmt);
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
- _("Using sqlite page utilization to estimate payload (%llu pages of size %llu bytes)\n"),
- (unsigned long long) pages,
- (unsigned long long) page_size);
- return pages * page_size;
+ _
+ ("Using sqlite page utilization to estimate payload (%llu pages of size %llu bytes)\n"),
+ (unsigned long long) pages, (unsigned long long) page_size);
+ return pages * page_size;
}
-
+
/**
* Entry point for the plugin.
struct GNUNET_DATASTORE_PluginFunctions *api;
if (plugin.env != NULL)
- return NULL; /* can only initialize once! */
- memset (&plugin, 0, sizeof(struct Plugin));
+ return NULL; /* can only initialize once! */
+ memset (&plugin, 0, sizeof (struct Plugin));
plugin.env = env;
- if (GNUNET_OK !=
- database_setup (env->cfg, &plugin))
- {
- database_shutdown (&plugin);
- return NULL;
- }
+ if (GNUNET_OK != database_setup (env->cfg, &plugin))
+ {
+ database_shutdown (&plugin);
+ return NULL;
+ }
api = GNUNET_malloc (sizeof (struct GNUNET_DATASTORE_PluginFunctions));
api->cls = &plugin;
- api->get_size = &sqlite_plugin_get_size;
+ api->estimate_size = &sqlite_plugin_estimate_size;
api->put = &sqlite_plugin_put;
- api->next_request = &sqlite_next_request;
- api->get = &sqlite_plugin_get;
api->update = &sqlite_plugin_update;
- api->iter_low_priority = &sqlite_plugin_iter_low_priority;
- api->iter_zero_anonymity = &sqlite_plugin_iter_zero_anonymity;
- api->iter_ascending_expiration = &sqlite_plugin_iter_ascending_expiration;
- api->iter_migration_order = &sqlite_plugin_iter_migration_order;
- api->iter_all_now = &sqlite_plugin_iter_all_now;
+ api->get_key = &sqlite_plugin_get_key;
+ api->get_replication = &sqlite_plugin_get_replication;
+ api->get_expiration = &sqlite_plugin_get_expiration;
+ api->get_zero_anonymity = &sqlite_plugin_get_zero_anonymity;
api->drop = &sqlite_plugin_drop;
- GNUNET_log_from (GNUNET_ERROR_TYPE_INFO,
- "sqlite", _("Sqlite database running\n"));
+ GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, "sqlite",
+ _("Sqlite database running\n"));
return api;
}
struct GNUNET_DATASTORE_PluginFunctions *api = cls;
struct Plugin *plugin = api->cls;
- if (plugin->next_task != GNUNET_SCHEDULER_NO_TASK)
- {
- GNUNET_SCHEDULER_cancel (plugin->env->sched,
- plugin->next_task);
- plugin->next_task = GNUNET_SCHEDULER_NO_TASK;
- plugin->next_task_nc->prep (plugin->next_task_nc->prep_cls, NULL);
- GNUNET_free (plugin->next_task_nc);
- plugin->next_task_nc = NULL;
- }
+#if DEBUG_SQLITE
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "sqlite",
+ "sqlite plugin is done\n");
+#endif
+
fn = NULL;
if (plugin->drop_on_shutdown)
fn = GNUNET_strdup (plugin->fn);
+#if DEBUG_SQLITE
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "sqlite",
+ "Shutting down database\n");
+#endif
database_shutdown (plugin);
- plugin->env = NULL;
+ plugin->env = NULL;
GNUNET_free (api);
if (fn != NULL)
- {
- if (0 != UNLINK(fn))
- GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING,
- "unlink",
- fn);
- GNUNET_free (fn);
- }
+ {
+ if (0 != UNLINK (fn))
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", fn);
+ GNUNET_free (fn);
+ }
+#if DEBUG_SQLITE
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "sqlite",
+ "sqlite plugin is finished\n");
+#endif
return NULL;
}
projects / oweals / gnunet.git / blobdiff