--- /dev/null
+/*
+ This file is part of GNUnet.
+ Copyright (C) 2012, 2013, 2014, 2017, 2018 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
+ 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., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
+*/
+
+/**
+ * @file zonemaster/gnunet-service-zonemaster-monitor.c
+ * @brief monitor namestore changes and publish them immediately to GNUnet name system
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "gnunet_util_lib.h"
+#include "gnunet_dht_service.h"
+#include "gnunet_namestore_service.h"
+#include "gnunet_statistics_service.h"
+
+
+#define LOG_STRERROR_FILE(kind,syscall,filename) GNUNET_log_from_strerror_file (kind, "util", syscall, filename)
+
+
+/**
+ * How often should we (re)publish each record before
+ * it expires?
+ */
+#define PUBLISH_OPS_PER_EXPIRATION 4
+
+/**
+ * How many pending DHT operations do we allow at most?
+ */
+#define DHT_QUEUE_LIMIT 2000
+
+/**
+ * How many events may the namestore give us before it has to wait
+ * for us to keep up?
+ */
+#define NAMESTORE_QUEUE_LIMIT 50
+
+/**
+ * What replication level do we use for DHT PUT operations?
+ */
+#define DHT_GNS_REPLICATION_LEVEL 5
+
+
+/**
+ * Handle for DHT PUT activity triggered from the namestore monitor.
+ */
+struct DhtPutActivity
+{
+ /**
+ * Kept in a DLL.
+ */
+ struct DhtPutActivity *next;
+
+ /**
+ * Kept in a DLL.
+ */
+ struct DhtPutActivity *prev;
+
+ /**
+ * Handle for the DHT PUT operation.
+ */
+ struct GNUNET_DHT_PutHandle *ph;
+
+ /**
+ * When was this PUT initiated?
+ */
+ struct GNUNET_TIME_Absolute start_date;
+};
+
+
+/**
+ * Handle to the statistics service
+ */
+static struct GNUNET_STATISTICS_Handle *statistics;
+
+/**
+ * Our handle to the DHT
+ */
+static struct GNUNET_DHT_Handle *dht_handle;
+
+/**
+ * Our handle to the namestore service
+ */
+static struct GNUNET_NAMESTORE_Handle *namestore_handle;
+
+/**
+ * Handle to monitor namestore changes to instant propagation.
+ */
+static struct GNUNET_NAMESTORE_ZoneMonitor *zmon;
+
+/**
+ * Head of monitor activities; kept in a DLL.
+ */
+static struct DhtPutActivity *ma_head;
+
+/**
+ * Tail of monitor activities; kept in a DLL.
+ */
+static struct DhtPutActivity *ma_tail;
+
+/**
+ * Number of entries in the DHT queue #ma_head.
+ */
+static unsigned int ma_queue_length;
+
+/**
+ * Optimize block insertion by caching map of private keys to
+ * public keys in memory?
+ */
+static int cache_keys;
+
+
+/**
+ * Task run during shutdown.
+ *
+ * @param cls unused
+ * @param tc unused
+ */
+static void
+shutdown_task (void *cls)
+{
+ struct DhtPutActivity *ma;
+
+ (void) cls;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Shutting down!\n");
+ while (NULL != (ma = ma_head))
+ {
+ GNUNET_DHT_put_cancel (ma->ph);
+ ma_queue_length--;
+ GNUNET_CONTAINER_DLL_remove (ma_head,
+ ma_tail,
+ ma);
+ GNUNET_free (ma);
+ }
+ if (NULL != statistics)
+ {
+ GNUNET_STATISTICS_destroy (statistics,
+ GNUNET_NO);
+ statistics = NULL;
+ }
+ if (NULL != zmon)
+ {
+ GNUNET_NAMESTORE_zone_monitor_stop (zmon);
+ zmon = NULL;
+ }
+ if (NULL != namestore_handle)
+ {
+ GNUNET_NAMESTORE_disconnect (namestore_handle);
+ namestore_handle = NULL;
+ }
+ if (NULL != dht_handle)
+ {
+ GNUNET_DHT_disconnect (dht_handle);
+ dht_handle = NULL;
+ }
+}
+
+
+/**
+ * Continuation called from DHT once the PUT operation triggered
+ * by a monitor is done.
+ *
+ * @param cls a `struct DhtPutActivity`
+ */
+static void
+dht_put_monitor_continuation (void *cls)
+{
+ struct DhtPutActivity *ma = cls;
+
+ GNUNET_NAMESTORE_zone_monitor_next (zmon,
+ 1);
+ ma_queue_length--;
+ GNUNET_CONTAINER_DLL_remove (ma_head,
+ ma_tail,
+ ma);
+ GNUNET_free (ma);
+}
+
+
+/**
+ * Convert namestore records from the internal format to that
+ * suitable for publication (removes private records, converts
+ * to absolute expiration time).
+ *
+ * @param rd input records
+ * @param rd_count size of the @a rd and @a rd_public arrays
+ * @param rd_public where to write the converted records
+ * @return number of records written to @a rd_public
+ */
+static unsigned int
+convert_records_for_export (const struct GNUNET_GNSRECORD_Data *rd,
+ unsigned int rd_count,
+ struct GNUNET_GNSRECORD_Data *rd_public)
+{
+ struct GNUNET_TIME_Absolute now;
+ unsigned int rd_public_count;
+
+ rd_public_count = 0;
+ now = GNUNET_TIME_absolute_get ();
+ for (unsigned int i=0;i<rd_count;i++)
+ if (0 == (rd[i].flags & GNUNET_GNSRECORD_RF_PRIVATE))
+ {
+ rd_public[rd_public_count] = rd[i];
+ if (rd_public[rd_public_count].expiration_time < now.abs_value_us)
+ {
+ /* record already expired, skip it */
+ continue;
+ }
+ rd_public_count++;
+ }
+ return rd_public_count;
+}
+
+
+/**
+ * Store GNS records in the DHT.
+ *
+ * @param key key of the zone
+ * @param label label to store under
+ * @param rd_public public record data
+ * @param rd_public_count number of records in @a rd_public
+ * @param cont function to call with PUT result
+ * @param cont_cls closure for @a cont
+ * @return DHT PUT handle, NULL on error
+ */
+static struct GNUNET_DHT_PutHandle *
+perform_dht_put (const struct GNUNET_CRYPTO_EcdsaPrivateKey *key,
+ const char *label,
+ const struct GNUNET_GNSRECORD_Data *rd_public,
+ unsigned int rd_public_count,
+ GNUNET_SCHEDULER_TaskCallback cont,
+ void *cont_cls)
+{
+ struct GNUNET_GNSRECORD_Block *block;
+ struct GNUNET_HashCode query;
+ struct GNUNET_TIME_Absolute expire;
+ size_t block_size;
+ struct GNUNET_DHT_PutHandle *ret;
+
+ expire = GNUNET_GNSRECORD_record_get_expiration_time (rd_public_count,
+ rd_public);
+ if (cache_keys)
+ block = GNUNET_GNSRECORD_block_create2 (key,
+ expire,
+ label,
+ rd_public,
+ rd_public_count);
+ else
+ block = GNUNET_GNSRECORD_block_create (key,
+ expire,
+ label,
+ rd_public,
+ rd_public_count);
+ if (NULL == block)
+ {
+ GNUNET_break (0);
+ return NULL; /* whoops */
+ }
+ block_size = ntohl (block->purpose.size)
+ + sizeof (struct GNUNET_CRYPTO_EcdsaSignature)
+ + sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey);
+ GNUNET_GNSRECORD_query_from_private_key (key,
+ label,
+ &query);
+ GNUNET_STATISTICS_update (statistics,
+ "DHT put operations initiated",
+ 1,
+ GNUNET_NO);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Storing %u record(s) for label `%s' in DHT with expiration `%s' under key %s\n",
+ rd_public_count,
+ label,
+ GNUNET_STRINGS_absolute_time_to_string (expire),
+ GNUNET_h2s (&query));
+ ret = GNUNET_DHT_put (dht_handle,
+ &query,
+ DHT_GNS_REPLICATION_LEVEL,
+ GNUNET_DHT_RO_DEMULTIPLEX_EVERYWHERE,
+ GNUNET_BLOCK_TYPE_GNS_NAMERECORD,
+ block_size,
+ block,
+ expire,
+ cont,
+ cont_cls);
+ GNUNET_free (block);
+ return ret;
+}
+
+
+/**
+ * Process a record that was stored in the namestore
+ * (invoked by the monitor).
+ *
+ * @param cls closure, NULL
+ * @param zone private key of the zone; NULL on disconnect
+ * @param label label of the records; NULL on disconnect
+ * @param rd_count number of entries in @a rd array, 0 if label was deleted
+ * @param rd array of records with data to store
+ */
+static void
+handle_monitor_event (void *cls,
+ const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone,
+ const char *label,
+ unsigned int rd_count,
+ const struct GNUNET_GNSRECORD_Data *rd)
+{
+ struct GNUNET_GNSRECORD_Data rd_public[rd_count];
+ unsigned int rd_public_count;
+ struct DhtPutActivity *ma;
+
+ (void) cls;
+ GNUNET_STATISTICS_update (statistics,
+ "Namestore monitor events received",
+ 1,
+ GNUNET_NO);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received %u records for label `%s' via namestore monitor\n",
+ rd_count,
+ label);
+ /* filter out records that are not public, and convert to
+ absolute expiration time. */
+ rd_public_count = convert_records_for_export (rd,
+ rd_count,
+ rd_public);
+ if (0 == rd_public_count)
+ {
+ GNUNET_NAMESTORE_zone_monitor_next (zmon,
+ 1);
+ return; /* nothing to do */
+ }
+ ma = GNUNET_new (struct DhtPutActivity);
+ ma->start_date = GNUNET_TIME_absolute_get ();
+ ma->ph = perform_dht_put (zone,
+ label,
+ rd,
+ rd_count,
+ &dht_put_monitor_continuation,
+ ma);
+ if (NULL == ma->ph)
+ {
+ /* PUT failed, do not remember operation */
+ GNUNET_free (ma);
+ GNUNET_NAMESTORE_zone_monitor_next (zmon,
+ 1);
+ return;
+ }
+ GNUNET_CONTAINER_DLL_insert_tail (ma_head,
+ ma_tail,
+ ma);
+ ma_queue_length++;
+ if (ma_queue_length > DHT_QUEUE_LIMIT)
+ {
+ ma = ma_head;
+ GNUNET_CONTAINER_DLL_remove (ma_head,
+ ma_tail,
+ ma);
+ GNUNET_DHT_put_cancel (ma->ph);
+ ma_queue_length--;
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ "DHT PUT unconfirmed after %s, aborting PUT\n",
+ GNUNET_STRINGS_relative_time_to_string (GNUNET_TIME_absolute_get_duration (ma->start_date),
+ GNUNET_YES));
+ GNUNET_free (ma);
+ }
+}
+
+
+/**
+ * The zone monitor encountered an IPC error trying to to get in
+ * sync. Restart from the beginning.
+ *
+ * @param cls NULL
+ */
+static void
+handle_monitor_error (void *cls)
+{
+ (void) cls;
+ GNUNET_STATISTICS_update (statistics,
+ "Namestore monitor errors encountered",
+ 1,
+ GNUNET_NO);
+}
+
+
+/**
+ * Performe zonemaster duties: watch namestore, publish records.
+ *
+ * @param cls closure
+ * @param server the initialized server
+ * @param c configuration to use
+ */
+static void
+run (void *cls,
+ const struct GNUNET_CONFIGURATION_Handle *c,
+ struct GNUNET_SERVICE_Handle *service)
+{
+ unsigned long long max_parallel_bg_queries = 128;
+
+ (void) cls;
+ (void) service;
+ namestore_handle = GNUNET_NAMESTORE_connect (c);
+ if (NULL == namestore_handle)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Failed to connect to the namestore!\n"));
+ GNUNET_SCHEDULER_shutdown ();
+ return;
+ }
+ cache_keys = GNUNET_CONFIGURATION_get_value_yesno (c,
+ "namestore",
+ "CACHE_KEYS");
+ if (GNUNET_OK ==
+ GNUNET_CONFIGURATION_get_value_number (c,
+ "zonemaster",
+ "MAX_PARALLEL_BACKGROUND_QUERIES",
+ &max_parallel_bg_queries))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Number of allowed parallel background queries: %llu\n",
+ max_parallel_bg_queries);
+ }
+ if (0 == max_parallel_bg_queries)
+ max_parallel_bg_queries = 1;
+ dht_handle = GNUNET_DHT_connect (c,
+ (unsigned int) max_parallel_bg_queries);
+ if (NULL == dht_handle)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Could not connect to DHT!\n"));
+ GNUNET_SCHEDULER_add_now (&shutdown_task,
+ NULL);
+ return;
+ }
+
+ /* Schedule periodic put for our records. */
+ statistics = GNUNET_STATISTICS_create ("zonemaster-mon",
+ c);
+ zmon = GNUNET_NAMESTORE_zone_monitor_start (c,
+ NULL,
+ GNUNET_NO,
+ &handle_monitor_error,
+ NULL,
+ &handle_monitor_event,
+ NULL,
+ NULL /* sync_cb */,
+ NULL);
+ GNUNET_NAMESTORE_zone_monitor_next (zmon,
+ NAMESTORE_QUEUE_LIMIT - 1);
+ GNUNET_break (NULL != zmon);
+ GNUNET_SCHEDULER_add_shutdown (&shutdown_task,
+ NULL);
+}
+
+
+/**
+ * Define "main" method using service macro.
+ */
+GNUNET_SERVICE_MAIN
+("zonemaster-monitor",
+ GNUNET_SERVICE_OPTION_NONE,
+ &run,
+ NULL,
+ NULL,
+ NULL,
+ GNUNET_MQ_handler_end());
+
+
+/* end of gnunet-service-zonemaster-monitor.c */
/*
This file is part of GNUnet.
- Copyright (C) 2012, 2013, 2014, 2017 GNUnet e.V.
+ Copyright (C) 2012, 2013, 2014, 2017, 2018 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
#include "gnunet_dht_service.h"
#include "gnunet_namestore_service.h"
#include "gnunet_statistics_service.h"
-#include "gnunet_namestore_plugin.h"
-#include "gnunet_signatures.h"
#define LOG_STRERROR_FILE(kind,syscall,filename) GNUNET_log_from_strerror_file (kind, "util", syscall, filename)
*/
#define LATE_ITERATION_SPEEDUP_FACTOR 2
-/**
- * How long until a DHT PUT attempt should time out?
- */
-#define DHT_OPERATION_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 60)
-
/**
* What replication level do we use for DHT PUT operations?
*/
*/
static struct GNUNET_NAMESTORE_ZoneIterator *namestore_iter;
-/**
- * Handle to monitor namestore changes to instant propagation.
- */
-static struct GNUNET_NAMESTORE_ZoneMonitor *zmon;
-
-/**
- * Head of monitor activities; kept in a DLL.
- */
-static struct DhtPutActivity *ma_head;
-
-/**
- * Tail of monitor activities; kept in a DLL.
- */
-static struct DhtPutActivity *ma_tail;
-
/**
* Head of iteration put activities; kept in a DLL.
*/
(void) cls;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Shutting down!\n");
- while (NULL != (ma = ma_head))
- {
- GNUNET_DHT_put_cancel (ma->ph);
- ma_queue_length--;
- GNUNET_CONTAINER_DLL_remove (ma_head,
- ma_tail,
- ma);
- GNUNET_free (ma);
- }
while (NULL != (ma = it_head))
{
GNUNET_DHT_put_cancel (ma->ph);
GNUNET_NAMESTORE_zone_iteration_stop (namestore_iter);
namestore_iter = NULL;
}
- if (NULL != zmon)
- {
- GNUNET_NAMESTORE_zone_monitor_stop (zmon);
- zmon = NULL;
- }
if (NULL != namestore_handle)
{
GNUNET_NAMESTORE_disconnect (namestore_handle);
publish_zone_dht_start (void *cls);
-/**
- * Continuation called from DHT once the PUT operation triggered
- * by a monitor is done.
- *
- * @param cls a `struct DhtPutActivity`
- */
-static void
-dht_put_monitor_continuation (void *cls)
-{
- struct DhtPutActivity *ma = cls;
-
- GNUNET_NAMESTORE_zone_monitor_next (zmon,
- 1);
- ma_queue_length--;
- GNUNET_CONTAINER_DLL_remove (ma_head,
- ma_tail,
- ma);
- GNUNET_free (ma);
-}
-
-
/**
* Calculate #target_iteration_velocity_per_record.
*/
}
-/**
- * Process a record that was stored in the namestore
- * (invoked by the monitor).
- *
- * @param cls closure, NULL
- * @param zone private key of the zone; NULL on disconnect
- * @param label label of the records; NULL on disconnect
- * @param rd_count number of entries in @a rd array, 0 if label was deleted
- * @param rd array of records with data to store
- */
-static void
-handle_monitor_event (void *cls,
- const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone,
- const char *label,
- unsigned int rd_count,
- const struct GNUNET_GNSRECORD_Data *rd)
-{
- struct GNUNET_GNSRECORD_Data rd_public[rd_count];
- unsigned int rd_public_count;
- struct DhtPutActivity *ma;
-
- (void) cls;
- GNUNET_STATISTICS_update (statistics,
- "Namestore monitor events received",
- 1,
- GNUNET_NO);
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received %u records for label `%s' via namestore monitor\n",
- rd_count,
- label);
- /* filter out records that are not public, and convert to
- absolute expiration time. */
- rd_public_count = convert_records_for_export (rd,
- rd_count,
- rd_public);
- if (0 == rd_public_count)
- {
- GNUNET_NAMESTORE_zone_monitor_next (zmon,
- 1);
- return; /* nothing to do */
- }
- num_public_records++;
- ma = GNUNET_new (struct DhtPutActivity);
- ma->start_date = GNUNET_TIME_absolute_get ();
- ma->ph = perform_dht_put (zone,
- label,
- rd,
- rd_count,
- &dht_put_monitor_continuation,
- ma);
- if (NULL == ma->ph)
- {
- /* PUT failed, do not remember operation */
- GNUNET_free (ma);
- GNUNET_NAMESTORE_zone_monitor_next (zmon,
- 1);
- return;
- }
- GNUNET_CONTAINER_DLL_insert_tail (ma_head,
- ma_tail,
- ma);
- ma_queue_length++;
- if (ma_queue_length > DHT_QUEUE_LIMIT)
- {
- ma = ma_head;
- GNUNET_CONTAINER_DLL_remove (ma_head,
- ma_tail,
- ma);
- GNUNET_DHT_put_cancel (ma->ph);
- ma_queue_length--;
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- "DHT PUT unconfirmed after %s, aborting PUT\n",
- GNUNET_STRINGS_relative_time_to_string (GNUNET_TIME_absolute_get_duration (ma->start_date),
- GNUNET_YES));
- GNUNET_free (ma);
- }
-}
-
-
-/**
- * The zone monitor is now in SYNC with the current state of the
- * name store. Start to perform periodic iterations.
- *
- * @param cls NULL
- */
-static void
-monitor_sync_event (void *cls)
-{
- (void) cls;
- if ( (NULL == zone_publish_task) &&
- (NULL == namestore_iter) )
- zone_publish_task = GNUNET_SCHEDULER_add_now (&publish_zone_dht_start,
- NULL);
-}
-
-
-/**
- * The zone monitor encountered an IPC error trying to to get in
- * sync. Restart from the beginning.
- *
- * @param cls NULL
- */
-static void
-handle_monitor_error (void *cls)
-{
- (void) cls;
- GNUNET_STATISTICS_update (statistics,
- "Namestore monitor errors encountered",
- 1,
- GNUNET_NO);
- if (NULL != zone_publish_task)
- {
- GNUNET_SCHEDULER_cancel (zone_publish_task);
- zone_publish_task = NULL;
- }
- if (NULL != namestore_iter)
- {
- GNUNET_NAMESTORE_zone_iteration_stop (namestore_iter);
- namestore_iter = NULL;
- }
- zone_publish_task = GNUNET_SCHEDULER_add_now (&publish_zone_dht_start,
- NULL);
-}
-
-
/**
* Performe zonemaster duties: watch namestore, publish records.
*
"Target zone iteration velocity (μs)",
target_iteration_velocity_per_record.rel_value_us,
GNUNET_NO);
- zmon = GNUNET_NAMESTORE_zone_monitor_start (c,
- NULL,
- GNUNET_NO,
- &handle_monitor_error,
- NULL,
- &handle_monitor_event,
- NULL,
- &monitor_sync_event,
- NULL);
- GNUNET_NAMESTORE_zone_monitor_next (zmon,
- NAMESTORE_QUEUE_LIMIT - 1);
- GNUNET_break (NULL != zmon);
+ zone_publish_task = GNUNET_SCHEDULER_add_now (&publish_zone_dht_start,
+ NULL);
GNUNET_SCHEDULER_add_shutdown (&shutdown_task,
NULL);
}
projects / oweals / gnunet.git / commitdiff