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[cascardo/ovs.git] / lib / ovsdb-idl.h

diff --git a/lib/ovsdb-idl.h b/lib/ovsdb-idl.h
index 6b5e198..ac63ec9 100644 (file)
--- a/lib/ovsdb-idl.h
+++ b/lib/ovsdb-idl.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
+/* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2015 Nicira, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -23,6 +23,10 @@
  * raw JSON into data structures that are easier for clients to digest.  Most
  * notably, references to rows via UUID become C pointers.
  *
+ * The IDL always presents a consistent snapshot of the database to its client,
+ * that is, it won't present the effects of some part of a transaction applied
+ * at the database server without presenting all of its effects.
+ *
  * The IDL also assists with issuing database transactions.  The client creates
  * a transaction, manipulates the IDL data structures, and commits or aborts
  * the transaction.  The IDL then composes and issues the necessary JSON-RPC
@@ -57,6 +61,7 @@ bool ovsdb_idl_is_lock_contended(const struct ovsdb_idl *);
 
 unsigned int ovsdb_idl_get_seqno(const struct ovsdb_idl *);
 bool ovsdb_idl_has_ever_connected(const struct ovsdb_idl *);
+void ovsdb_idl_enable_reconnect(struct ovsdb_idl *);
 void ovsdb_idl_force_reconnect(struct ovsdb_idl *);
 void ovsdb_idl_verify_write_only(struct ovsdb_idl *);
 
@@ -114,6 +119,8 @@ const struct ovsdb_datum *ovsdb_idl_get(const struct ovsdb_idl_row *,
                                         const struct ovsdb_idl_column *,
                                         enum ovsdb_atomic_type key_type,
                                         enum ovsdb_atomic_type value_type);
+bool ovsdb_idl_is_mutable(const struct ovsdb_idl_row *,
+                          const struct ovsdb_idl_column *);
 
 bool ovsdb_idl_row_is_synthetic(const struct ovsdb_idl_row *);
 \f
@@ -186,7 +193,7 @@ const char *ovsdb_idl_txn_status_to_string(enum ovsdb_idl_txn_status);
 
 struct ovsdb_idl_txn *ovsdb_idl_txn_create(struct ovsdb_idl *);
 void ovsdb_idl_txn_add_comment(struct ovsdb_idl_txn *, const char *, ...)
-    PRINTF_FORMAT (2, 3);
+    OVS_PRINTF_FORMAT (2, 3);
 void ovsdb_idl_txn_set_dry_run(struct ovsdb_idl_txn *);
 void ovsdb_idl_txn_increment(struct ovsdb_idl_txn *,
                              const struct ovsdb_idl_row *,
@@ -215,5 +222,25 @@ const struct ovsdb_idl_row *ovsdb_idl_txn_insert(
     const struct uuid *);
 
 struct ovsdb_idl *ovsdb_idl_txn_get_idl (struct ovsdb_idl_txn *);
+void ovsdb_idl_get_initial_snapshot(struct ovsdb_idl *);
+\f
+
+/* ovsdb_idl_loop provides an easy way to manage the transactions related
+ * to 'idl' and to cope with different status during transaction. */
+struct ovsdb_idl_loop {
+    struct ovsdb_idl *idl;
+    unsigned int skip_seqno;
+
+    struct ovsdb_idl_txn *committing_txn;
+    unsigned int precommit_seqno;
+
+    struct ovsdb_idl_txn *open_txn;
+};
+
+#define OVSDB_IDL_LOOP_INITIALIZER(IDL) { .idl = (IDL) }
+
+void ovsdb_idl_loop_destroy(struct ovsdb_idl_loop *);
+struct ovsdb_idl_txn *ovsdb_idl_loop_run(struct ovsdb_idl_loop *);
+void ovsdb_idl_loop_commit_and_wait(struct ovsdb_idl_loop *);
 
 #endif /* ovsdb-idl.h */