From 06f45b04aaa8a9832599035cafee142f09700b9b Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Sun, 1 Aug 2021 13:20:49 +0200
Subject: -move DB-agnostic types to GNUNET_DB

---
 src/include/gnunet_db_lib.h | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

(limited to 'src/include/gnunet_db_lib.h')

diff --git a/src/include/gnunet_db_lib.h b/src/include/gnunet_db_lib.h
index 85ad13e31..63c45112d 100644
--- a/src/include/gnunet_db_lib.h
+++ b/src/include/gnunet_db_lib.h
@@ -61,4 +61,47 @@ enum GNUNET_DB_QueryStatus
                                            that returned more than one result. */
 };
 
+
+/**
+ * Handle for an active LISTENer to a database.
+ */
+struct GNUNET_DB_EventHandler;
+
+/**
+ * Function called on events received from Postgres.
+ *
+ * @param cls closure
+ * @param extra additional event data provided
+ * @param extra_size number of bytes in @a extra
+ */
+typedef void
+(*GNUNET_DB_EventCallback)(void *cls,
+                           const void *extra,
+                           size_t extra_size);
+
+GNUNET_NETWORK_STRUCT_BEGIN
+
+
+/**
+ * Header of a structure that describes an
+ * event channel we may subscribe to or notify on.
+ */
+struct GNUNET_DB_EventHeaderP
+{
+  /**
+   * The length of the struct (in bytes, including the length field itself),
+   * in big-endian format.
+   */
+  uint16_t size GNUNET_PACKED;
+
+  /**
+   * The type of the message (GNUNET_DB_EVENT_TYPE_XXXX), in big-endian format.
+   */
+  uint16_t type GNUNET_PACKED;
+
+};
+
+GNUNET_NETWORK_STRUCT_END
+
+
 #endif
-- 
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