function stacked_bar_chart($host_instance_list)
{
$title = new title('所有instance实际内存使用');
$title->set_style("{color: #567300; font-size: 16px; font-weight:bold;}");
$bar_stack = new bar_stack();
$bar_stack->set_colours(array('#C4D318', '#7D7B6A'));
$max = 64;
foreach ($host_instance_list as $i => $instance) {
$jvmmem = isset($instance['jvmmem']) ? explode('/', $instance['jvmmem']) : array();
if ($jvmmem) {
foreach ($jvmmem as &$j) {
$j = intval($j);
}
$max = $max < $jvmmem[1] ? $jvmmem[1] : $max;
$jvmmem[1] = $jvmmem[1] - $jvmmem[0];
}
$bar_stack->append_stack($jvmmem);
$lables[] = $instance['port_num'];
$services[$i] = $instance['service_name'];
}
$bar_stack->set_keys(array(new bar_stack_key('#C4D318', 'used', 13), new bar_stack_key('#7D7B6A', 'total', 13)));
$bar_stack->set_on_click('(function(x){var services=' . json_encode($services) . ';alert(services[x]);})');
//js
$bar_stack->set_tooltip('#val#M,共#total#M');
$y = new y_axis();
$y->set_range(0, $max + 32, 256);
$x = new x_axis();
$x->set_labels_from_array($lables);
$tooltip = new tooltip();
$tooltip->set_hover();
$chart = new open_flash_chart();
$chart->set_title($title);
$chart->add_element($bar_stack);
$chart->set_x_axis($x);
$chart->add_y_axis($y);
$chart->set_tooltip($tooltip);
return $chart->toPrettyString();
}
