mirror of
https://github.com/openvswitch/ovs
synced 2025-10-17 14:28:02 +00:00
1b1d2e6daa
This commit adds support for OVSDB clustering via Raft. Please read ovsdb(7) for information on how to set up a clustered database. It is simple and boils down to running "ovsdb-tool create-cluster" on one server and "ovsdb-tool join-cluster" on each of the others and then starting ovsdb-server in the usual way on all of them. One you have a clustered database, you configure ovn-controller and ovn-northd to use it by pointing them to all of the servers, e.g. where previously you might have said "tcp:1.2.3.4" was the database server, now you say that it is "tcp:1.2.3.4,tcp:5.6.7.8,tcp:9.10.11.12". This also adds support for database clustering to ovs-sandbox. Acked-by: Justin Pettit <jpettit@ovn.org> Tested-by: aginwala <aginwala@asu.edu> Signed-off-by: Ben Pfaff <blp@ovn.org>
93 lines
2.8 KiB
C
93 lines
2.8 KiB
C
/* Copyright (c) 2008, 2009, 2010, 2016, 2017 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 UUID_H
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#define UUID_H 1
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#include "openvswitch/uuid.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* An initializer or expression for an all-zero UUID. */
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#define UUID_ZERO ((struct uuid) { .parts = { 0, 0, 0, 0 } })
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/* Formats a UUID as a string, in the conventional format.
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*
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* Example:
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* struct uuid uuid = ...;
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* printf("This UUID is "UUID_FMT"\n", UUID_ARGS(&uuid));
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*
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*/
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#define UUID_LEN 36
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#define UUID_FMT "%08x-%04x-%04x-%04x-%04x%08x"
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#define UUID_ARGS(UUID) \
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((unsigned int) ((UUID)->parts[0])), \
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((unsigned int) ((UUID)->parts[1] >> 16)), \
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((unsigned int) ((UUID)->parts[1] & 0xffff)), \
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((unsigned int) ((UUID)->parts[2] >> 16)), \
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((unsigned int) ((UUID)->parts[2] & 0xffff)), \
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((unsigned int) ((UUID)->parts[3]))
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/* Returns a hash value for 'uuid'. This hash value is the same regardless of
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* whether we are running on a 32-bit or 64-bit or big-endian or little-endian
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* architecture. */
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static inline size_t
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uuid_hash(const struct uuid *uuid)
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{
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return uuid->parts[0];
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}
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/* Returns true if 'a == b', false otherwise. */
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static inline bool
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uuid_equals(const struct uuid *a, const struct uuid *b)
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{
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return (a->parts[0] == b->parts[0]
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&& a->parts[1] == b->parts[1]
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&& a->parts[2] == b->parts[2]
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&& a->parts[3] == b->parts[3]);
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}
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/* Returns the first 'n' hex digits of 'uuid', for 0 < 'n' <= 8.
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*
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* This is useful for displaying a few leading digits of the uuid, e.g. to
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* display 4 digits:
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* printf("%04x", uuid_prefix(uuid, 4));
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*/
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static inline unsigned int
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uuid_prefix(const struct uuid *uuid, int digits)
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{
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return (uuid->parts[0] >> (32 - 4 * digits));
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}
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void uuid_init(void);
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void uuid_generate(struct uuid *);
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struct uuid uuid_random(void);
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void uuid_zero(struct uuid *);
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bool uuid_is_zero(const struct uuid *);
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int uuid_compare_3way(const struct uuid *, const struct uuid *);
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bool uuid_from_string(struct uuid *, const char *);
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bool uuid_from_string_prefix(struct uuid *, const char *);
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int uuid_is_partial_string(const char *);
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int uuid_is_partial_match(const struct uuid *, const char *match);
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void uuid_set_bits_v4(struct uuid *);
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#ifdef __cplusplus
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}
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#endif
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#endif /* uuid.h */
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