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550 lines (456 loc) · 16.3 KB
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<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Display of status information on pgpool
*
* PHP versions 4 and 5
*
* LICENSE: Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby
* granted, provided that the above copyright notice appear in all
* copies and that both that copyright notice and this permission
* notice appear in supporting documentation, and that the name of the
* author not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. The author makes no representations about the
* suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* @author Ryuma Ando <ando@ecomas.co.jp>
* @copyright 2003-2015 PgPool Global Development Group
* @version SVN: $Id$
*/
require_once('common.php');
require_once('command.php');
/* --------------------------------------------------------------------- */
/* Status.php */
/* --------------------------------------------------------------------- */
// Check login status
if (!isset($_SESSION[SESSION_LOGIN_USER])) {
header('Location: login.php');
exit();
}
$is_pgpool_running = DoesPgpoolPidExist();
// Do action
$nodeNumber = (isset($_POST['nodeNumber'])) ? $_POST['nodeNumber'] : -1;
$action = (isset($_POST['action'])) ? $_POST['action'] : FALSE;
$viewPHP = _doAction($action, $nodeNumber);
// Set vars
setNodeInfoFromConf();
$tpl->assign('action', $action);
$tpl->assign('pgpoolIsRunning', $is_pgpool_running);
$tpl->assign('viewPHP', $viewPHP);
$tpl->assign('help', basename( __FILE__, '.php'));
$tpl->assign('pgpoolConf', _PGPOOL2_CONFIG_FILE);
$tpl->assign('pcpConf', _PGPOOL2_PASSWORD_FILE);
$tpl->assign('refreshTime', (0 <= _PGPOOL2_STATUS_REFRESH_TIME) ?
_PGPOOL2_STATUS_REFRESH_TIME * 1000 : 5000);
$tpl->assign('refreshTimeLog', (0 <= REFRESH_LOG_SECONDS) ?
REFRESH_LOG_SECONDS * 1000 : 5000);
$tpl->assign('useSyslog', useSyslog());
$tpl->assign('pipe', (isPipe(_PGPOOL2_LOG_FILE)) ? 1 : 0);
$tpl->assign('msgStopPgpool', $message['msgStopPgpool']);
$tpl->assign('login_user', $_SESSION[SESSION_LOGIN_USER]);
$tpl->assign('is_superuser', (isset($_SESSION[SESSION_IS_SUPER_USER])) ?
$_SESSION[SESSION_IS_SUPER_USER] : isSuperUser($_SESSION[SESSION_LOGIN_USER]));
// Set params
$configValue = readConfigParams();
$tpl->assign('params', $configValue);
// Set pgpool command option
$tpl->assign('c', _PGPOOL2_CMD_OPTION_C);
$tpl->assign('D', _PGPOOL2_CMD_OPTION_LARGE_D);
$tpl->assign('d', _PGPOOL2_CMD_OPTION_D);
$tpl->assign('m', _PGPOOL2_CMD_OPTION_M);
$tpl->assign('n', _PGPOOL2_CMD_OPTION_N);
$tpl->assign('C', _PGPOOL2_CMD_OPTION_LARGE_C);
// Display
$tpl->display('status.tpl');
/* --------------------------------------------------------------------- */
/* Functions */
/* --------------------------------------------------------------------- */
/** Execute a command */
function _doAction($action, $nodeNumber)
{
global $tpl;
$viewPHP = 'nodeStatus.php';
$tpl->assign('pgpoolStatus', NULL);
$tpl->assign('pgpoolMessage', NULL);
switch ($action) {
/* --------------------------------------------------------------------- */
/* pgpool */
/* --------------------------------------------------------------------- */
case 'startPgpool':
if (_startPgpool()) {
header("Location: " . $_SERVER['PHP_SELF']);
}
break;
case 'stopPgpool':
if (_stopPgpool()) {
header("Location: " . $_SERVER['PHP_SELF']);
}
break;
case 'restartPgpool':
if (_restartPgpool()) {
header("Location: " . $_SERVER['PHP_SELF']);
}
break;
case 'reloadPgpool':
$args = ' ';
$result = execPcp('PCP_RELOAD_PGPOOL', $args);
break;
/* --------------------------------------------------------------------- */
/* other command */
/* --------------------------------------------------------------------- */
case 'return':
if (_execPcp('PCP_ATTACH_NODE', array('n' => $nodeNumber), 'e1010') === FALSE) { exit(); }
break;
case 'recovery':
if (_execPcp('PCP_RECOVERY_NODE', array('n' => $nodeNumber), 'e1012') === FALSE) { exit(); }
break;
case 'detach':
if (_execPcp('PCP_DETACH_NODE', array('n' => $nodeNumber), 'e1007') === FALSE) { exit(); }
break;
case 'promote':
if (_execPcp('PCP_PROMOTE_NODE', array('n' => $nodeNumber), 'e1007') === FALSE) { exit(); }
break;
/* --------------------------------------------------------------------- */
/* PostgreSQL */
/* --------------------------------------------------------------------- */
case 'startPgsql':
// ...
break;
case 'stopPgsql':
_doPgCtl($nodeNumber, 'stop');
break;
case 'restartPgsql':
_doPgCtl($nodeNumber, 'restart');
break;
case 'reloadPgsql':
$result = _doPgCtl($nodeNumber, 'reload');
$tpl->assign('status', ($result) ? 'success' : 'fail');
break;
case 'addBackend':
$result = _addNewBackend();
$tpl->assign('status', ($result) ? 'success' : 'fail');
break;
case 'removeBackend':
$result = _removeBackend();
$tpl->assign('status', ($result) ? 'success' : 'fail');
break;
/* --------------------------------------------------------------------- */
/* other */
/* --------------------------------------------------------------------- */
case 'summary':
$viewPHP = 'innerSummary.php';
break;
case 'proc':
$viewPHP = 'procInfo.php';
break;
case 'watchdog':
$viewPHP = 'innerWatchdog.php';
break;
case 'node':
$viewPHP = 'nodeStatus.php';
break;
case 'log':
$viewPHP = 'innerLog.php';
break;
}
return $viewPHP;
}
/** Set node info from pgpool.conf when pgpool isn't running */
function setNodeInfoFromConf()
{
global $tpl;
global $is_pgpool_running;
if (! $is_pgpool_running) {
$nodeInfo = array();
$configValue = readConfigParams(array('backend_hostname', 'backend_port'));
if (isset($configValue['backend_hostname'])) {
foreach ($configValue['backend_hostname'] as $i => $backend_hostname) {
$nodeInfo[$i]['backend_hostname'] = $backend_hostname;
$nodeInfo[$i]['backend_port'] = $configValue['backend_port'][$i];
$nodeInfo[$i]['is_active'] = NodeActive($i);
}
}
$tpl->assign('nodeInfo', $nodeInfo);
}
$configValue = readConfigParams(array('backend_hostname'));
$tpl->assign('next_node_num', (isset($configValue['backend_hostname'])) ?
max(array_keys($configValue['backend_hostname'])) + 1 : 0);
}
/** Modify start options */
function _setStartArgs()
{
$args = array();
$args[] = "-f ". _PGPOOL2_CONFIG_FILE;
$args[] = "-F ". _PGPOOL2_PASSWORD_FILE;
foreach ($_POST as $key => $value) {
switch ($key) {
case 'c':
case 'D':
case 'd':
case 'C':
case 'n':
if ($value == 'on') {
$args[] = "-{$key}";
}
if ($key == 'n') {
$pgpoolLog = _PGPOOL2_LOG_FILE;
if ($pgpoolLog == '') {
$logDir = readLogDir();
$pgpoolLog = "$logDir/pgpool.log";
}
if (isPipe($pgpoolLog)) {
$args[] = "2>&1 > $pgpoolLog &";
} else {
$args[] = "> $pgpoolLog 2>&1 &";
}
}
break;
}
}
$args = ' ' . implode(' ', $args);
return $args;
}
/** Wait to find pgpool.pid */
function _waitForPidFile()
{
for ($i = 0; $i < PGPOOL_WAIT_SECONDS; $i++) {
if (DoesPgpoolPidExist()) {
return TRUE;
} else {
sleep(1);
}
}
return FALSE;
}
/** Wait that pgpool.pid disappears */
function _waitForNoPidFile()
{
for ($i = 0; $i < PGPOOL_WAIT_SECONDS; $i++) {
if (DoesPgpoolPidExist()) {
sleep(1);
} else {
return TRUE;
}
}
return FALSE;
}
/** Start pgpool */
function _startPgpool()
{
global $tpl;
$rtn = FALSE;
$result = execPcp('PCP_START_PGPOOL');
if (! array_key_exists('SUCCESS', $result)) {
$pgpoolStatus = 'pgpool start failed.';
$pgpoolMessage = $result;
} else {
if (_waitForPidFile()) {
$pgpoolStatus = 'pgpool start succeed';
$rtn = TRUE;
} else {
$pgpoolStatus = 'pgpool start failed. pgpool.pid not found';
}
$pgpoolMessage = $result['SUCCESS'];
}
$tpl->assign('pgpoolStatus', $pgpoolStatus);
$tpl->assign('pgpoolMessage', $pgpoolMessage);
return $rtn;
}
/** Stop pgpool */
function _stopPgpool()
{
global $_POST;
global $tpl;
$rtn = FALSE;
$m = $_POST['stop_mode'];
$result = execPcp('PCP_STOP_PGPOOL', array('m' => $m));
if (!array_key_exists('SUCCESS', $result)) {
$errorCode = 'e1006';
$tpl->assign('errorCode', $errorCode);
$tpl->display('error.tpl');
exit();
} else {
if (_waitForNoPidFile()) {
$pgpoolStatus = 'pgpool stop succeed';
$rtn = TRUE;
} else {
$pgpoolStatus = 'pgpool stop failed. pgpool.pid exists.';
}
$tpl->assign('pgpoolStatus', $pgpoolStatus);
}
return $rtn;
}
/** Restart pgpool */
function _restartPgpool()
{
global $_POST;
global $tpl;
$rtn = FALSE;
// Stop pgpool
$m = $_POST['stop_mode'];
$result = execPcp('PCP_STOP_PGPOOL', array('m' => $m));
if (!array_key_exists('SUCCESS', $result)) {
$errorCode = 'e1006';
$tpl->assign('errorCode', $errorCode);
$tpl->display('error.tpl');
exit();
}
if (_waitForNoPidFile()) {
// Start pgpool
$args = _setStartArgs();
$result = execPcp('PCP_START_PGPOOL', $args);
if (!array_key_exists('SUCCESS', $result)) {
$pgpoolStatus = 'pgpool restart failed.';
$pgpoolMessage = $result;
} else {
if (_waitForPidFile()) {
$pgpoolStatus = 'pgpool restart succeed';
$rtn = TRUE;
} else {
$pgpoolStatus = 'pgpool restart failed. pgpool.pid not found';
}
$pgpoolMessage = $result['SUCCESS'];
}
} else {
$pgpoolStatus = 'pgpool restart failed. pgpool.pid exists.';
}
$tpl->assign('pgpoolStatus', $pgpoolStatus);
$tpl->assign('pgpoolMessage', $pgpoolMessage);
return $rtn;
}
/** Execute PCP command with node number */
function _execPcp($pcp_command, $nodeNumber, $errorCode)
{
global $tpl;
$result = execPcp($pcp_command, $nodeNumber);
if (!array_key_exists('SUCCESS', $result)) {
$tpl->assign('errorCode', $errorCode);
$tpl->display('error.tpl');
return FALSE;
}
return TRUE;
}
/** Add a new backend and reload conf */
function _addNewBackend()
{
global $is_pgpool_running;
global $_POST;
// Check
if ($_POST['backend_hostname'][0] == NULL || $_POST['backend_port'][0] == NULL ||
$_POST['backend_weight'][0] == NULL)
{
return FALSE;
}
// Get next nodeNumber
$configValue = readConfigParams(array('backend_hostname'));
$i = (isset($configValue['backend_hostname'])) ?
max(array_keys($configValue['backend_hostname'])) + 1 : 0;
// add
$lines[] = "backend_hostname{$i} = '{$_POST['backend_hostname'][0]}'\n";
$lines[] = "backend_port{$i} = {$_POST['backend_port'][0]}\n";
$lines[] = "backend_weight{$i} = {$_POST['backend_weight'][0]}\n";
$lines[] = "backend_data_directory{$i} = '{$_POST['backend_data_directory'][0]}'\n";
if (paramExists('backend_flag')) {
$lines[] = "backend_flag{$i}= '{$_POST['backend_flag'][0]}'\n";
}
// Write pgpool.conf
$outfp = fopen(_PGPOOL2_CONFIG_FILE, 'a');
if (! $outfp) { return FALSE; }
foreach ($lines as $line) {
if (fputs($outfp, $line) === FALSE) {
return FALSE;
}
}
fclose($outfp);
// Reload pgpool
$result = TRUE;
if (isset($_POST['reload_ok']) && $is_pgpool_running) {
$result = execPcp('PCP_RELOAD_PGPOOL', NO_ARGS);
}
return $result;
}
/** Remove a backend and reload conf */
function _removeBackend()
{
global $is_pgpool_running;
global $_POST;
if (!isset($_POST['nodeNumber'])) { return FALSE; }
$nodeNumber = $_POST['nodeNumber'];
// Read execept backend info of node $nodeNumber
$lines_to_write = array();
$fd = fopen(_PGPOOL2_CONFIG_FILE, 'r');
if (! $fd) { return FALSE; }
while (! feof($fd)) {
$line = fgets($fd);
if (strpos($line, "backend_hostname") !== FALSE ||
strpos($line, "backend_port") !== FALSE ||
strpos($line, "backend_weight") !== FALSE ||
strpos($line, "backend_data_directory") !== FALSE ||
strpos($line, "backend_flag") !== FALSE)
{
continue;
}
$lines_to_write[] = $line;
}
fclose($fd);
// Get all the current backends' info
$params = readConfigParams(array('backend_hostname', 'backend_port', 'backend_weight',
'backend_data_directory', 'backend_flag'));
$i = 0;
foreach ($params['backend_hostname'] as $old_i => $arr) {
if ($old_i == $nodeNumber) { continue; }
$lines_to_write[] = "backend_hostname{$i} = '{$params['backend_hostname'][$old_i]}'\n";
$lines_to_write[] = "backend_port{$i} = {$params['backend_port'][$old_i]}\n";
$lines_to_write[] = "backend_weight{$i} = {$params['backend_weight'][$old_i]}\n";
$lines_to_write[] = "backend_data_directory{$i} = '{$params['backend_data_directory'][$old_i]}'\n";
if (paramExists('backend_flag')) {
$lines_to_write[] = "backend_flag{$i} = '{$params['backend_flag'][$old_i]}'\n";
}
$i++;
}
// Write editted lines
$fd = fopen(_PGPOOL2_CONFIG_FILE, 'w');
if (! $fd) { return FALSE; }
foreach ($lines_to_write as $line) {
if (fputs($fd, $line) === FALSE) {
return FALSE;
}
}
fclose($fd);
// Reload pgpool
$result = TRUE;
if ($is_pgpool_running) {
$result = execPcp('PCP_RELOAD_PGPOOL', NO_ARGS);
}
return $result;
}
/** Execute pg_ctl through pgpool_pgctl() */
function _doPgCtl($nodeNumber, $pg_ctl_action)
{
global $_POST;
if (isSuperUser($_SESSION[SESSION_LOGIN_USER]) == FALSE) { return FALSE; }
$params = readConfigParams(array(
'backend_hostname', 'backend_port', 'backend_weight',
));
$conn = openDBConnection(array(
'host' => $params['backend_hostname'][$nodeNumber],
'port' => $params['backend_port'][$nodeNumber],
'dbname' => 'template1',
'user' => $_SESSION[SESSION_LOGIN_USER],
'password' => $_SESSION[SESSION_LOGIN_USER_PASSWORD],
'connect_timeout' => _PGPOOL2_PG_CONNECT_TIMEOUT,
));
if ($conn == FALSE) {
closeDBConnection($conn);
return FALSE;
}
$query = sprintf("SELECT pgpool_pgctl('%s', '%s')",
$pg_ctl_action,
(isset($_POST['stop_mode'])) ? $_POST['stop_mode'] : NULL);
$result = execQuery($conn, $query);
closeDBConnection($conn);
return $result;
}