X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Fovsdb-idl.h;h=9179e380eb1bb0f99d1dc2f6a423771548a2ef4c;hb=c259baae45d76592eb14db5abde20aa72e7f2605;hp=31fae98427faa3ff1c09e0e44cd5a39a9fae8566;hpb=ce5a3e38dacd8042dd7c4de7be24aca9c2887103;p=openvswitch

diff --git a/lib/ovsdb-idl.h b/lib/ovsdb-idl.h
index 31fae984..9179e380 100644
--- a/lib/ovsdb-idl.h
+++ b/lib/ovsdb-idl.h
@@ -16,9 +16,24 @@
 #ifndef OVSDB_IDL_H
 #define OVSDB_IDL_H 1
 
+/* Open vSwitch Database Interface Definition Language (OVSDB IDL).
+ *
+ * The OVSDB IDL maintains an in-memory replica of a database.  It issues RPC
+ * requests to an OVSDB database server and parses the responses, converting
+ * raw JSON into data structures that are easier for clients to digest.  Most
+ * notably, references to rows via UUID become C pointers.
+ *
+ * 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
+ * requests and reports to the client whether the transaction completed
+ * successfully.
+ */
+
 #include <stdbool.h>
 #include <stdint.h>
 #include "compiler.h"
+#include "ovsdb-types.h"
 
 struct json;
 struct ovsdb_datum;
@@ -31,13 +46,17 @@ struct ovsdb_idl *ovsdb_idl_create(const char *remote,
                                    const struct ovsdb_idl_class *);
 void ovsdb_idl_destroy(struct ovsdb_idl *);
 
-void ovsdb_idl_run(struct ovsdb_idl *);
+bool ovsdb_idl_run(struct ovsdb_idl *);
 void ovsdb_idl_wait(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_force_reconnect(struct ovsdb_idl *);
 
+void ovsdb_idl_set_write_only(struct ovsdb_idl *,
+                              const struct ovsdb_idl_column *);
+void ovsdb_idl_omit(struct ovsdb_idl *, const struct ovsdb_idl_column *);
+
 const struct ovsdb_idl_row *ovsdb_idl_get_row_for_uuid(
     const struct ovsdb_idl *, const struct ovsdb_idl_table_class *,
     const struct uuid *);
@@ -45,6 +64,13 @@ const struct ovsdb_idl_row *ovsdb_idl_first_row(
     const struct ovsdb_idl *, const struct ovsdb_idl_table_class *);
 const struct ovsdb_idl_row *ovsdb_idl_next_row(const struct ovsdb_idl_row *);
 
+const struct ovsdb_datum *ovsdb_idl_read(const struct ovsdb_idl_row *,
+                                         const struct ovsdb_idl_column *);
+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);
+
 enum ovsdb_idl_txn_status {
     TXN_UNCHANGED,              /* Transaction didn't include any changes. */
     TXN_INCOMPLETE,             /* Commit in progress, please wait. */
@@ -76,9 +102,6 @@ int64_t ovsdb_idl_txn_get_increment_new_value(const struct ovsdb_idl_txn *);
 const struct uuid *ovsdb_idl_txn_get_insert_uuid(const struct ovsdb_idl_txn *,
                                                  const struct uuid *);
 
-void ovsdb_idl_txn_read(const struct ovsdb_idl_row *,
-                        const struct ovsdb_idl_column *,
-                        struct ovsdb_datum *);
 void ovsdb_idl_txn_write(const struct ovsdb_idl_row *,
                          const struct ovsdb_idl_column *,
                          struct ovsdb_datum *);