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Recent IDL change tracking patches allow quick traversal of changed rows. This patch adds additional support to track changed columns. It allows an IDL client to efficiently check if a specific column of a row was updated by IDL. Signed-off-by: Shad Ansari <shad.ansar@hpe.com> Signed-off-by: Ben Pfaff <blp@ovn.org>
92 lines
3.3 KiB
C
92 lines
3.3 KiB
C
/* Copyright (c) 2009, 2010, 2011, 2012 Nicira, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef OVSDB_IDL_PROVIDER_H
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#define OVSDB_IDL_PROVIDER_H 1
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#include "hmap.h"
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#include "list.h"
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#include "ovsdb-idl.h"
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#include "ovsdb-types.h"
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#include "shash.h"
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#include "uuid.h"
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struct ovsdb_idl_row {
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struct hmap_node hmap_node; /* In struct ovsdb_idl_table's 'rows'. */
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struct uuid uuid; /* Row "_uuid" field. */
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struct ovs_list src_arcs; /* Forward arcs (ovsdb_idl_arc.src_node). */
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struct ovs_list dst_arcs; /* Backward arcs (ovsdb_idl_arc.dst_node). */
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struct ovsdb_idl_table *table; /* Containing table. */
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struct ovsdb_datum *old; /* Committed data (null if orphaned). */
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/* Transactional data. */
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struct ovsdb_datum *new; /* Modified data (null to delete row). */
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unsigned long int *prereqs; /* Bitmap of columns to verify in "old". */
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unsigned long int *written; /* Bitmap of columns from "new" to write. */
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struct hmap_node txn_node; /* Node in ovsdb_idl_txn's list. */
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/* Tracking data */
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unsigned int change_seqno[OVSDB_IDL_CHANGE_MAX];
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struct ovs_list track_node; /* Rows modified/added/deleted by IDL */
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unsigned long int *updated; /* Bitmap of columns updated by IDL */
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};
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struct ovsdb_idl_column {
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char *name;
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struct ovsdb_type type;
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bool mutable;
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void (*parse)(struct ovsdb_idl_row *, const struct ovsdb_datum *);
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void (*unparse)(struct ovsdb_idl_row *);
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};
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struct ovsdb_idl_table_class {
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char *name;
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bool is_root;
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const struct ovsdb_idl_column *columns;
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size_t n_columns;
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size_t allocation_size;
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void (*row_init)(struct ovsdb_idl_row *);
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};
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struct ovsdb_idl_table {
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const struct ovsdb_idl_table_class *class;
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unsigned char *modes; /* OVSDB_IDL_* bitmasks, indexed by column. */
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bool need_table; /* Monitor table even if no columns are selected
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* for replication. */
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struct shash columns; /* Contains "const struct ovsdb_idl_column *"s. */
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struct hmap rows; /* Contains "struct ovsdb_idl_row"s. */
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struct ovsdb_idl *idl; /* Containing idl. */
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unsigned int change_seqno[OVSDB_IDL_CHANGE_MAX];
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struct ovs_list track_list; /* Tracked rows (ovsdb_idl_row.track_node). */
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};
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struct ovsdb_idl_class {
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const char *database; /* <db-name> for this database. */
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const struct ovsdb_idl_table_class *tables;
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size_t n_tables;
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};
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struct ovsdb_idl_row *ovsdb_idl_get_row_arc(
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struct ovsdb_idl_row *src,
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struct ovsdb_idl_table_class *dst_table,
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const struct uuid *dst_uuid);
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void ovsdb_idl_txn_verify(const struct ovsdb_idl_row *,
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const struct ovsdb_idl_column *);
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struct ovsdb_idl_txn *ovsdb_idl_txn_get(const struct ovsdb_idl_row *);
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#endif /* ovsdb-idl-provider.h */
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