[ovs-dev] [PATCH 3/5] ovsdb-server: Integrate stream replay engine.
Dumitru Ceara
dceara at redhat.com
Tue Jul 14 13:35:49 UTC 2020
On 6/30/20 3:24 AM, Ilya Maximets wrote:
> This change adds support of stream record/replay functionality to
> ovsdb-server.
>
> Since current replay engine doesn't work well with time-based
> events generated locally, it will work only with standalone databases
> for now (raft heavily depends on time).
>
> To use this functionality run:
>
> # record:
> <copy current db for later use by replay>
> ovsdb-server --sream-replay-record --predictable-uuids-with-seed=1234 <...>
Typo: s/sream/stream
> <connect some clients and run some ovsdb transactions>
> ovs-appctl -t ovsdb-server exit
>
> # replay:
> <restore db from the copy>
> ovsdb-server --sream-replay --predictable-uuids-with-seed=1234 <...>
Typo: s/sream/stream
Thanks,
Dumitru
> At this point ovsdb-server should execute all the same commands
> and transactions. Since the last command was 'exit' via unixctl,
> ovsdb-server will exit in the end.
>
> Signed-off-by: Ilya Maximets <i.maximets at ovn.org>
> ---
> ovsdb/ovsdb-server.c | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/ovsdb/ovsdb-server.c b/ovsdb/ovsdb-server.c
> index 3af09c8c1..178fa6fa5 100644
> --- a/ovsdb/ovsdb-server.c
> +++ b/ovsdb/ovsdb-server.c
> @@ -1716,6 +1716,7 @@ parse_options(int argc, char *argv[],
> VLOG_OPTION_ENUMS,
> DAEMON_OPTION_ENUMS,
> SSL_OPTION_ENUMS,
> + STREAM_REPLAY_OPTION_ENUMS,
> };
>
> static const struct option long_options[] = {
> @@ -1731,6 +1732,7 @@ parse_options(int argc, char *argv[],
> {"bootstrap-ca-cert", required_argument, NULL, OPT_BOOTSTRAP_CA_CERT},
> {"peer-ca-cert", required_argument, NULL, OPT_PEER_CA_CERT},
> STREAM_SSL_LONG_OPTIONS,
> + STREAM_REPLAY_LONG_OPTIONS,
> {"sync-from", required_argument, NULL, OPT_SYNC_FROM},
> {"sync-exclude-tables", required_argument, NULL, OPT_SYNC_EXCLUDE},
> {"active", no_argument, NULL, OPT_ACTIVE},
> @@ -1807,6 +1809,8 @@ parse_options(int argc, char *argv[],
> stream_ssl_set_peer_ca_cert_file(optarg);
> break;
>
> + STREAM_REPLAY_OPTION_HANDLERS
> +
> case OPT_SYNC_FROM:
> *sync_from = xstrdup(optarg);
> break;
> @@ -1868,7 +1872,7 @@ usage(void)
> program_name, program_name, ovs_dbdir());
> printf("\nJSON-RPC options (may be specified any number of times):\n"
> " --remote=REMOTE connect or listen to REMOTE\n");
> - stream_usage("JSON-RPC", true, true, true, false);
> + stream_usage("JSON-RPC", true, true, true, true);
> daemon_usage();
> vlog_usage();
> replication_usage();
>
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