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Addition of show monitors command, shutdown monitor and restart monitor

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This commit is contained in:
Mark Riddoch
2013-07-25 13:13:54 +02:00
parent d5b41181ec
commit 5e6ed4cafa
6 changed files with 236 additions and 43 deletions
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50
core/monitor.c
View File

@ -66,7 +66,7 @@ MONITOR *mon;
free(mon);
return NULL;
}
mon->handle = (*mon->module->startMonitor)();
mon->handle = (*mon->module->startMonitor)(NULL);
spinlock_acquire(&monLock);
mon->next = allMonitors;
@ -104,6 +104,29 @@ MONITOR *ptr;
free(mon);
}
/**
* Start an individual monitor that has previoulsy been stopped.
*
* @param monitor The Monitor that should be started
*/
void
monitorStart(MONITOR *monitor)
{
monitor->handle = (*monitor->module->startMonitor)(monitor->handle);
}
/**
* Stop a given monitor
*
* @param monitor The monitor to stop
*/
void
monitorStop(MONITOR *monitor)
{
monitor->module->stopMonitor(monitor->handle);
}
/**
* Shutdown all running monitors
*/
@ -116,7 +139,7 @@ MONITOR *ptr;
ptr = allMonitors;
while (ptr)
{
ptr->module->stopMonitor(ptr->handle);
monitorStop(ptr);
ptr = ptr->next;
}
spinlock_release(&monLock);
@ -148,3 +171,26 @@ monitorAddUser(MONITOR *mon, char *user, char *passwd)
{
mon->module->defaultUser(mon->handle, user, passwd);
}
/**
* Show all monitors
*
* @param dcb DCB for printing output
*/
void
monitorShowAll(DCB *dcb)
{
MONITOR *ptr;
spinlock_acquire(&monLock);
ptr = allMonitors;
while (ptr)
{
dcb_printf(dcb, "Monitor: %p\n", ptr);
dcb_printf(dcb, "\tName: %s\n", ptr->name);
if (ptr->module->diagnostics)
ptr->module->diagnostics(dcb, ptr->handle);
ptr = ptr->next;
}
spinlock_release(&monLock);
}

8
include/monitor.h
View File

@ -18,6 +18,7 @@
* Copyright SkySQL Ab 2013
*/
#include <server.h>
#include <dcb.h>
/**
* @file monitor.h The interface to the monitor module
@ -27,6 +28,7 @@
*
* Date Who Description
* 07/07/13 Mark Riddoch Initial implementation
* 25/07/13 Mark Riddoch Addition of diagnotics
*
* @endverbatim
*/
@ -57,11 +59,12 @@
* monitored.
*/
typedef struct {
void *(*startMonitor)();
void *(*startMonitor)(void *);
void (*stopMonitor)(void *);
void (*registerServer)(void *, SERVER *);
void (*unregisterServer)(void *, SERVER *);
void (*defaultUser)(void *, char *, char *);
void (*diagnostics)(DCB *, void *);
} MONITOR_OBJECT;
/**
@ -78,5 +81,8 @@ extern MONITOR *monitor_alloc(char *, char *);
extern void monitor_free(MONITOR *);
extern void monitorAddServer(MONITOR *, SERVER *);
extern void monitorAddUser(MONITOR *, char *, char *);
extern void monitorStop(MONITOR *);
extern void monitorStart(MONITOR *);
extern void monitorStopAll();
extern void monitorShowAll(DCB *);
#endif

56
modules/monitor/galera_mon.c
View File

@ -39,18 +39,20 @@
#include <skygw_utils.h>
#include <log_manager.h>
#include <secrets.h>
#include <dcb.h>
static void monitorMain(void *);
static char *version_str = "V1.0.0";
static void *startMonitor();
static void *startMonitor(void *);
static void stopMonitor(void *);
static void registerServer(void *, SERVER *);
static void unregisterServer(void *, SERVER *);
static void defaultUsers(void *, char *, char *);
static void daignostics(DCB *, void *);
static MONITOR_OBJECT MyObject = { startMonitor, stopMonitor, registerServer, unregisterServer, defaultUser };
static MONITOR_OBJECT MyObject = { startMonitor, stopMonitor, registerServer, unregisterServer, defaultUser, daignostics };
/**
* Implementation of the mandatory version entry point
@ -96,10 +98,17 @@ GetModuleObject()
* @return A handle to use when interacting with the monitor
*/
static void *
startMonitor()
startMonitor(void *arg)
{
MYSQL_MONITOR *handle;
if (arg != NULL)
{
handle = (MYSQL_MONITOR *)arg;
handle->shutdown = 0;
}
else
{
if ((handle = (MYSQL_MONITOR *)malloc(sizeof(MYSQL_MONITOR))) == NULL)
return NULL;
handle->databases = NULL;
@ -107,6 +116,7 @@ MYSQL_MONITOR *handle;
handle->defaultUser = NULL;
handle->deaultPasswd = NULL;
spinlock_init(&handle->lock);
}
thread_start(monitorMain, handle);
return handle;
}
@ -194,6 +204,43 @@ MONITOR_SERVERS *ptr, *lptr;
spinlock_release(&handle->lock);
}
/**
* Diagnostic interface
*
* @param dcb DCB to send output
* @param arg The monitor handle
*/
static void
diagnostics(DCB *dcbm void *handle)
{
MYSQL_MONITOR *handle = (MYSQL_MONITOR *)arg;
MONITOR_SERVERS *db;
char *sep;
switch (handle->status)
{
case MONITOR_RUNNING:
dcb_printf(dcb, "\tMonitor running\n");
break;
case MONITOR_STOPPING:
dcb_printf(dcb, "\tMonitor stopping\n");
break;
case MONITOR_STOPPED:
dcb_printf(dcb, "\tMonitor stopped\n");
break;
}
dcb_printf(dcb, "\tMonitored servers: ");
db = handle->databases;
sep = "";
while (db)
{
dcb_printf(dcb, "%s%s:%d", sep, db->server->name, db->server->port);
sep = ", ";
db = db->next;
}
dcb_printf(dcb, "\n");
}
/**
* Set the default username and password to use to monitor if the server does not
* override this.
@ -292,11 +339,14 @@ MONITOR_SERVERS *ptr;
"module. Exiting.\n");
return;
}
handle->status = MONITOR_RUNNING;
while (1)
{
if (handle->shutdown)
{
handle->status = MONITOR_STOPPING;
mysql_thread_end();
handle->status = MONITOR_STOPPED;
return;
}
ptr = handle->databases;

58
modules/monitor/mysql_mon.c
View File

@ -26,6 +26,8 @@
* 08/07/13 Mark Riddoch Initial implementation
* 11/07/13 Mark Riddoch Addition of code to check replication
* status
* 25/07/13 Mark Riddoch Addition of decrypt for passwords and
* diagnostic interface
*
* @endverbatim
*/
@ -41,18 +43,20 @@
#include <skygw_utils.h>
#include <log_manager.h>
#include <secrets.h>
#include <dcb.h>
static void monitorMain(void *);
static char *version_str = "V1.0.0";
static void *startMonitor();
static void *startMonitor(void *);
static void stopMonitor(void *);
static void registerServer(void *, SERVER *);
static void unregisterServer(void *, SERVER *);
static void defaultUser(void *, char *, char *);
static void diagnostics(DCB *, void *);
static MONITOR_OBJECT MyObject = { startMonitor, stopMonitor, registerServer, unregisterServer, defaultUser };
static MONITOR_OBJECT MyObject = { startMonitor, stopMonitor, registerServer, unregisterServer, defaultUser, diagnostics };
/**
* Implementation of the mandatory version entry point
@ -95,13 +99,21 @@ GetModuleObject()
*
* This function creates a thread to execute the actual monitoring.
*
* @param arg The current handle - NULL if first start
* @return A handle to use when interacting with the monitor
*/
static void *
startMonitor()
startMonitor(void *arg)
{
MYSQL_MONITOR *handle;
if (arg)
{
handle = arg; /* Must be a restart */
handle->shutdown = 0;
}
else
{
if ((handle = (MYSQL_MONITOR *)malloc(sizeof(MYSQL_MONITOR))) == NULL)
return NULL;
handle->databases = NULL;
@ -109,6 +121,7 @@ MYSQL_MONITOR *handle;
handle->defaultUser = NULL;
handle->defaultPasswd = NULL;
spinlock_init(&handle->lock);
}
thread_start(monitorMain, handle);
return handle;
}
@ -217,6 +230,42 @@ MYSQL_MONITOR *handle = (MYSQL_MONITOR *)arg;
handle->defaultPasswd = strdup(passwd);
}
/**
* Daignostic interface
*
* @param dcb DCB to print diagnostics
* @param arg The monitor handle
*/
static void diagnostics(DCB *dcb, void *arg)
{
MYSQL_MONITOR *handle = (MYSQL_MONITOR *)arg;
MONITOR_SERVERS *db;
char *sep;
switch (handle->status)
{
case MONITOR_RUNNING:
dcb_printf(dcb, "\tMonitor running\n");
break;
case MONITOR_STOPPING:
dcb_printf(dcb, "\tMonitor stopping\n");
break;
case MONITOR_STOPPED:
dcb_printf(dcb, "\tMonitor stopped\n");
break;
}
dcb_printf(dcb, "\tMonitored servers: ");
db = handle->databases;
sep = "";
while (db)
{
dcb_printf(dcb, "%s%s:%d", sep, db->server->name, db->server->port);
sep = ", ";
db = db->next;
}
dcb_printf(dcb, "\n");
}
/**
* Monitor an individual server
*
@ -328,11 +377,14 @@ MONITOR_SERVERS *ptr;
"module. Exiting.\n");
return;
}
handle->status = MONITOR_RUNNING;
while (1)
{
if (handle->shutdown)
{
handle->status = MONITOR_STOPPING;
mysql_thread_end();
handle->status = MONITOR_STOPPED;
return;
}
ptr = handle->databases;

6
modules/monitor/mysqlmon.h
View File

@ -50,8 +50,14 @@ typedef struct monitor_servers {
typedef struct {
SPINLOCK lock; /**< The monitor spinlock */
int shutdown; /**< Flag to shutdown the monitor thread */
int status; /**< Monitor status */
char *defaultUser; /**< Default username for monitoring */
char *defaultPasswd; /**< Default password for monitoring */
MONITOR_SERVERS *databases; /**< Linked list of servers to monitor */
} MYSQL_MONITOR;
#define MONITOR_RUNNING 1
#define MONITOR_STOPPING 2
#define MONITOR_STOPPED 3
#endif

73
modules/routing/debugcmd.c
View File

@ -56,6 +56,7 @@
#include <config.h>
#include <telnetd.h>
#include <adminusers.h>
#include <monitor.h>
#include <debugcli.h>
#define MAXARGS 5
@ -80,26 +81,28 @@ static void telnetdShowUsers(DCB *);
* The subcommands of the show command
*/
struct subcommand showoptions[] = {
{ "sessions", 0, dprintAllSessions, "Show all active sessions in MaxScale",
{0, 0, 0} },
{ "session", 1, dprintSession, "Show a single session in MaxScale, e.g. show session 0x284830",
{ARG_TYPE_ADDRESS, 0, 0} },
{ "services", 0, dprintAllServices, "Show all configured services in MaxScale",
{0, 0, 0} },
{ "servers", 0, dprintAllServers, "Show all configured servers",
{0, 0, 0} },
{ "server", 1, dprintServer, "Show details for a server, e.g. show server 0x485390",
{ARG_TYPE_ADDRESS, 0, 0} },
{ "modules", 0, dprintAllModules, "Show all currently loaded modules",
{0, 0, 0} },
{ "dcbs", 0, dprintAllDCBs, "Show all descriptor control blocks (network connections)",
{0, 0, 0} },
{ "dcb", 1, dprintDCB, "Show a single descriptor control block e.g. show dcb 0x493340",
{ARG_TYPE_ADDRESS, 0, 0} },
{ "epoll", 0, dprintPollStats, "Show the poll statistics",
{0, 0, 0} },
{ "dbusers", 1, dcb_usersPrint, "Show statistics and user names for a service's user table",
{ARG_TYPE_ADDRESS, 0, 0} },
{ "epoll", 0, dprintPollStats, "Show the poll statistics",
{0, 0, 0} },
{ "modules", 0, dprintAllModules, "Show all currently loaded modules",
{0, 0, 0} },
{ "monitors", 0, monitorShowAll, "Show the monitors that are configured",
{0, 0, 0} },
{ "server", 1, dprintServer, "Show details for a server, e.g. show server 0x485390",
{ARG_TYPE_ADDRESS, 0, 0} },
{ "servers", 0, dprintAllServers, "Show all configured servers",
{0, 0, 0} },
{ "services", 0, dprintAllServices, "Show all configured services in MaxScale",
{0, 0, 0} },
{ "session", 1, dprintSession, "Show a single session in MaxScale, e.g. show session 0x284830",
{ARG_TYPE_ADDRESS, 0, 0} },
{ "sessions", 0, dprintAllSessions, "Show all active sessions in MaxScale",
{0, 0, 0} },
{ "users", 0, telnetdShowUsers, "Show statistics and user names for the debug interface",
{ARG_TYPE_ADDRESS, 0, 0} },
{ NULL, 0, NULL, NULL,
@ -108,6 +111,7 @@ struct subcommand showoptions[] = {
extern void shutdown_gateway();
static void shutdown_service(DCB *dcb, SERVICE *service);
static void shutdown_monitor(DCB *dcb, MONITOR *monitor);
/**
* The subcommands of the shutdown command
@ -117,6 +121,8 @@ struct subcommand shutdownoptions[] = {
{0, 0, 0} },
{ "maxscale", 0, shutdown_gateway, "Shutdown the MaxScale gateway",
{0, 0, 0} },
{ "monitor", 1, shutdown_monitor, "Shutdown a monitor, e.g. shutdown monitor 0x48381e0",
{ARG_TYPE_ADDRESS, 0, 0} },
{ "service", 1, shutdown_service, "Shutdown a service, e.g. shutdown service 0x4838320",
{ARG_TYPE_ADDRESS, 0, 0} },
{ NULL, 0, NULL, NULL,
@ -124,10 +130,13 @@ struct subcommand shutdownoptions[] = {
};
static void restart_service(DCB *dcb, SERVICE *service);
static void restart_monitor(DCB *dcb, MONITOR *monitor);
/**
* The subcommands of the restart command
*/
struct subcommand restartoptions[] = {
{ "monitor", 1, restart_monitor, "Restart a monitor, e.g. restart monitor 0x48181e0",
{ARG_TYPE_ADDRESS, 0, 0} },
{ "service", 1, restart_service, "Restart a service, e.g. restart service 0x4838320",
{ARG_TYPE_ADDRESS, 0, 0} },
{ NULL, 0, NULL, NULL,
@ -163,10 +172,10 @@ static void reload_config(DCB *dcb);
* The subcommands of the reload command
*/
struct subcommand reloadoptions[] = {
{ "users", 1, reload_users, "Reload the user data for a service. E.g. reload users 0x849420",
{ARG_TYPE_ADDRESS, 0, 0} },
{ "config", 0, reload_config, "Reload the configuration data for MaxScale.",
{ARG_TYPE_ADDRESS, 0, 0} },
{ "users", 1, reload_users, "Reload the user data for a service. E.g. reload users 0x849420",
{ARG_TYPE_ADDRESS, 0, 0} },
{ NULL, 0, NULL, NULL,
{0, 0, 0} }
};
@ -189,13 +198,13 @@ static struct {
char *cmd;
struct subcommand *options;
} cmds[] = {
{ "show", showoptions },
{ "shutdown", shutdownoptions },
{ "add", addoptions },
{ "clear", clearoptions },
{ "restart", restartoptions },
{ "set", setoptions },
{ "clear", clearoptions },
{ "show", showoptions },
{ "shutdown", shutdownoptions },
{ "reload", reloadoptions },
{ "add", addoptions },
{ NULL, NULL }
};
@ -537,3 +546,27 @@ telnetdShowUsers(DCB *dcb)
dcb_printf(dcb, "Administration interface users:\n");
dcb_PrintAdminUsers(dcb);
}
/**
* Command to shutdown a running monitor
*
* @param dcb The DCB to use to print messages
* @param monitor The monitor to shutdown
*/
static void
shutdown_monitor(DCB *dcb, MONITOR *monitor)
{
monitorStop(monitor);
}
/**
* Command to restart a stopped monitor
*
* @param dcb The DCB to use to print messages
* @param monitor The monitor to restart
*/
static void
restart_monitor(DCB *dcb, MONITOR *monitor)
{
monitorStart(monitor);
}