-towards an API for the successor set

2 files changed, 33 insertions, 0 deletions

diff --git a/src/dht/gnunet-service-wdht_datacache.c b/src/dht/gnunet-service-wdht_datacache.c
index 6bf68028a..978c8f177 100644
--- a/src/dht/gnunet-service-wdht_datacache.c
+++ b/src/dht/gnunet-service-wdht_datacache.c
@@ -37,6 +37,12 @@
   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, __VA_ARGS__)
 
 /**
+ * How many "closest" results to we return for migration when
+ * asked (at most)?
+ */
+#define NUM_CLOSEST 42
+
+/**
  * Handle to the datacache service (for inserting/retrieving data)
  */
 static struct GNUNET_DATACACHE_Handle *datacache;
@@ -424,6 +430,23 @@ GDS_DATACACHE_get_random_key (struct GNUNET_HashCode *key)
 
 
 /**
+ * Handle a request for data close to a key that we have received from
+ * another peer.
+ *
+ * @param key the location at which the peer is looking for data that is close
+ */
+void
+GDS_DATACACHE_get_successors (const struct GNUNET_HashCode *key)
+{
+  GNUNET_DATACACHE_get_closest (datacache,
+                                key,
+                                NUM_CLOSEST,
+                                NULL /* FIXME */,
+                                NULL);
+}
+
+
+/**
  * Initialize datacache subsystem.
  */
 void
diff --git a/src/dht/gnunet-service-wdht_datacache.h b/src/dht/gnunet-service-wdht_datacache.h
index 0b28477c1..818138a87 100644
--- a/src/dht/gnunet-service-wdht_datacache.h
+++ b/src/dht/gnunet-service-wdht_datacache.h
@@ -88,6 +88,16 @@ GDS_DATACACHE_get_random_key (struct GNUNET_HashCode *key);
 
 
 /**
+ * Handle a request for data close to a key that we have received from
+ * another peer.
+ *
+ * @param key the location at which the peer is looking for data that is close
+ */
+void
+GDS_DATACACHE_get_successors (const struct GNUNET_HashCode *key);
+
+
+/**
  * Initialize datacache subsystem.
  */
 void