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Consolidate generation of various server control commands

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This is needed for better switchover control, so we can instruct
the remote repmgr to issue the appropriate server command rather
than trying to work out what it should be from the local node.
This commit is contained in:
Ian Barwick
2017-08-02 12:01:20 +09:00
parent 5b7b276ada
commit aa528dfdfb
8 changed files with 397 additions and 51 deletions
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238
repmgr-client.c
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@@ -29,6 +29,7 @@
* For internal use:
* NODE ARCHIVE-CONFIG
* NODE RESTORE-CONFIG
* NODE SERVICE
*/
#include <unistd.h>
@@ -302,8 +303,8 @@ main(int argc, char **argv)
runtime_options.upstream_node_id = repmgr_atoi(optarg, "--upstream-node-id", &cli_errors, false);
break;
/* standby clone options *
* --------------------- */
/* "standby clone" options *
* ----------------------- */
/* -c/--fast-checkpoint */
case 'c':
@@ -383,8 +384,8 @@ main(int argc, char **argv)
runtime_options.without_barman = true;
break;
/* standby register options *
* --------------------- */
/* "standby register" options *
* -------------------------- */
case OPT_REGISTER_WAIT:
runtime_options.wait_register_sync = true;
@@ -394,9 +395,24 @@ main(int argc, char **argv)
}
break;
/* "node service" options *
* ---------------------- */
/* event options *
* ------------- */
/* --action (repmgr node service --action) */
case OPT_ACTION:
strncpy(runtime_options.action, optarg, MAXLEN);
break;
case OPT_LIST:
runtime_options.list = true;
break;
case OPT_CHECK:
runtime_options.check = true;
break;
/* "cluster event" options *
* ----------------------- */
case OPT_EVENT:
strncpy(runtime_options.event, optarg, MAXLEN);
@@ -411,6 +427,8 @@ main(int argc, char **argv)
runtime_options.all = true;
break;
/* logging options *
* --------------- */
@@ -578,7 +596,7 @@ main(int argc, char **argv)
* { PRIMARY | MASTER } REGISTER |
* STANDBY {REGISTER | UNREGISTER | CLONE [node] | PROMOTE | FOLLOW [node] | SWITCHOVER | REWIND} |
* BDR { REGISTER | UNREGISTER } |
* NODE { STATUS } |
* NODE { STATUS | ARCHIVE-CONFIG | RESTORE-CONFIG | SERVICE } |
* CLUSTER { CROSSCHECK | MATRIX | SHOW | CLEANUP | EVENT }
*
* [node] is an optional hostname, provided instead of the -h/--host optipn
@@ -656,6 +674,8 @@ main(int argc, char **argv)
action = NODE_ARCHIVE_CONFIG;
else if (strcasecmp(repmgr_action, "RESTORE-CONFIG") == 0)
action = NODE_RESTORE_CONFIG;
else if (strcasecmp(repmgr_action, "SERVICE") == 0)
action = NODE_SERVICE;
}
else if (strcasecmp(repmgr_node_type, "CLUSTER") == 0)
@@ -972,11 +992,18 @@ main(int argc, char **argv)
case NODE_STATUS:
do_node_status();
break;
case NODE_CHECK:
do_node_check();
break;
case NODE_ARCHIVE_CONFIG:
do_node_archive_config();
break;
case NODE_RESTORE_CONFIG:
do_node_restore_config();
break;
case NODE_SERVICE:
do_node_service();
break;
/* CLUSTER */
case CLUSTER_SHOW:
@@ -1293,6 +1320,20 @@ check_cli_parameters(const int action)
action_name(action));
}
}
/* repmgr node service --action */
if (runtime_options.action)
{
switch (action)
{
case NODE_SERVICE:
break;
default:
item_list_append_format(&cli_warnings,
_("--action not required when executing %s"),
action_name(action));
}
}
}
@@ -1330,6 +1371,8 @@ action_name(const int action)
return "NODE ARCHIVE-CONFIG";
case NODE_RESTORE_CONFIG:
return "NODE RESTORE-CONFIG";
case NODE_SERVICE:
return "NODE_SERVICE";
case CLUSTER_SHOW:
return "CLUSTER SHOW";
@@ -2513,3 +2556,184 @@ remote_command(const char *host, const char *user, const char *command, PQExpBuf
}
/* ======================== */
/* server control functions */
/* ======================== */
void
get_server_action(t_server_action action, char *script, char *data_dir)
{
PQExpBufferData command;
if (data_dir == NULL)
data_dir = "(none provided)";
switch(action)
{
case ACTION_NONE:
script[0] = '\0';
return;
case ACTION_START:
{
if (config_file_options.service_start_command[0] != '\0')
{
maxlen_snprintf(script, "%s",
config_file_options.service_start_command);
}
else
{
initPQExpBuffer(&command);
appendPQExpBuffer(
&command,
"%s %s -w -D ",
make_pg_path("pg_ctl"),
config_file_options.pg_ctl_options);
appendShellString(
&command,
data_dir);
appendPQExpBuffer(
&command,
" start");
strncpy(script, command.data, MAXLEN);
termPQExpBuffer(&command);
}
return;
}
case ACTION_STOP:
{
if (config_file_options.service_stop_command[0] != '\0')
{
maxlen_snprintf(script, "%s",
config_file_options.service_stop_command);
}
else
{
initPQExpBuffer(&command);
appendPQExpBuffer(
&command,
"%s %s -D ",
make_pg_path("pg_ctl"),
config_file_options.pg_ctl_options);
appendShellString(
&command,
data_dir);
appendPQExpBuffer(
&command,
" -m fast -W stop");
strncpy(script, command.data, MAXLEN);
termPQExpBuffer(&command);
}
return;
}
case ACTION_RESTART:
{
if (config_file_options.service_restart_command[0] != '\0')
{
maxlen_snprintf(script, "%s",
config_file_options.service_restart_command);
}
else
{
initPQExpBuffer(&command);
appendPQExpBuffer(
&command,
"%s %s -w -D ",
make_pg_path("pg_ctl"),
config_file_options.pg_ctl_options);
appendShellString(
&command,
data_dir);
appendPQExpBuffer(
&command,
" restart");
strncpy(script, command.data, MAXLEN);
termPQExpBuffer(&command);
}
return;
}
case ACTION_RELOAD:
{
if (config_file_options.service_reload_command[0] != '\0')
{
maxlen_snprintf(script, "%s", config_file_options.service_reload_command);
}
else
{
initPQExpBuffer(&command);
appendPQExpBuffer(
&command,
"%s %s -w -D ",
make_pg_path("pg_ctl"),
config_file_options.pg_ctl_options);
appendShellString(
&command,
data_dir);
appendPQExpBuffer(
&command,
" reload");
strncpy(script, command.data, MAXLEN);
termPQExpBuffer(&command);
}
return;
}
case ACTION_PROMOTE:
{
if (config_file_options.service_promote_command[0] != '\0')
{
maxlen_snprintf(script, "%s", config_file_options.service_promote_command);
}
else
{
initPQExpBuffer(&command);
appendPQExpBuffer(
&command,
"%s %s -w -D ",
make_pg_path("pg_ctl"),
config_file_options.pg_ctl_options);
appendShellString(
&command,
data_dir);
appendPQExpBuffer(
&command,
" promote");
strncpy(script, command.data, MAXLEN);
termPQExpBuffer(&command);
}
return;
}
default:
return;
}
return;
}