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graph.php
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graph.php
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<?php
// vim: tabstop=2:softtabstop=2:shiftwidth=2:expandtab
include_once "./eval_conf.php";
include_once "./get_context.php";
include_once "./functions.php";
function add_total_to_cdef($cdef,
$total_ids,
$graph_config_scale) {
// Percentage calculation for cdefs, if required
$total = " CDEF:'total'=";
if (count($total_ids) == 0) {
// Handle nothing gracefully, do nothing
} else if (count($total_ids) == 1) {
// Concat just that id, leave it at that (100%)
$total .= $total_ids[0];
if (isset($graph_config_scale))
$total .= ",${graph_config_scale},*";
$cdef = $total . ' ' . $cdef;
} else {
$total .= $total_ids[0];
for ($i = 1; $i < count($total_ids); $i++)
$total .= ',' . $total_ids[$i] . ',ADDNAN';
if (isset($graph_config['scale']))
$total .= ",${graph_config_scale},*";
// Prepend total calculation
$cdef = $total . ', ' . $cdef;
}
return $cdef;
}
function graphdef_add_series($graphdef,
$series,
$series_type,
$graph_config_percent,
$graph_config_scale,
$stack_counter,
$series_id,
$max_label_length,
$conf_graphreport_stats,
$conf_graphreport_stat_items) {
static $line_widths = array("1", "2", "3");
$label = str_pad(sanitize($series['label']), $max_label_length);
switch ($series_type) {
case "line":
// Make sure it's a recognized line type
$line_width = isset($series['line_width']) &&
in_array($series['line_width'], $line_widths) ?
$series['line_width'] : '1';
$graphdef .= "LINE" . $line_width;
$graphdef .= ":'";
if (isset($graph_config_percent) &&
$graph_config_percent == '1') {
$graphdef .= "p";
} else if (isset($graph_config_scale)) {
$graphdef .= "s";
}
$graphdef .= "${series_id}'#${series['color']}:'${label}' ";
break;
case "stack":
case "percent":
// First element in a stack has to be AREA
if ($stack_counter == 0) {
$graphdef .= "AREA";
$stack_counter++;
} else {
$graphdef .= "STACK";
}
$graphdef .= ":'";
if (isset($graph_config_percent) &&
$graph_config_percent == '1') {
$graphdef .= "p";
} else if (isset($graph_config_scale)) {
$graphdef .= "s";
}
$graphdef .= "${series_id}'#${series['color']}:'${label}' ";
break;
// Percentile lines
case "percentile":
$percentile = isset($series['percentile']) ?
floatval($series['percentile']): 95;
$graphdef .= "VDEF:t${series_id}=${series_id},${percentile},PERCENT ";
$line_width = isset($series['line_width']) &&
in_array($series['line_width'], $line_widths) ?
$series['line_width'] : '1';
$graphdef .= "LINE" . $line_width .
":'t$series_id'#{$series['color']}:'{$label}':dashes ";
break;
case "area":
$graphdef .= "AREA";
$graphdef .= ":'$series_id'#${series['color']}:'${label}' ";
break;
}
if ($conf_graphreport_stats) {
$id = $series_id;
if (isset($graph_config_percent) &&
$graph_config_percent == '1') {
$id = 'p' . $id;
} else if (isset($graph_config_scale)) {
$id = 's' . $id;
}
$graphdef .= legendEntry($id, $conf_graphreport_stat_items);
}
return array($graphdef, $stack_counter);
}
///////////////////////////////////////////////////////////////////////////////
// Populate $rrdtool_graph from $config (from JSON file).
///////////////////////////////////////////////////////////////////////////////
function rrdtool_graph_merge_args_from_json($rrdtool_graph,
$graph_config,
$context,
$size,
$conf_rrds,
$conf_graphreport_stats,
$conf_graphreport_stat_items) {
$title = sanitize($graph_config['title']);
$rrdtool_graph['title'] = $title;
// If vertical label is empty or non-existent set it to space otherwise
// rrdtool will fail
if (! isset($graph_config['vertical_label']) ||
$graph_config['vertical_label'] == "") {
$rrdtool_graph['vertical-label'] = " ";
} else {
$rrdtool_graph['vertical-label'] =
sanitize($graph_config['vertical_label']);
}
$rrdtool_graph['lower-limit'] = '0';
if (isset($graph_config['height_adjustment']) ) {
$rrdtool_graph['height'] +=
($size == 'medium') ? $graph_config['height_adjustment'] : 0;
} else {
$rrdtool_graph['height'] += ($size == 'medium') ? 28 : 0;
}
// find longest label length, so we pad the others accordingly to get
// consistent column alignment
$max_label_length = 0;
foreach($graph_config['series'] as $series)
$max_label_length = max(strlen($series['label']), $max_label_length);
$seriesdef = '';
$cdef = '';
$graphdef = '';
$stack_counter = 0;
$total_ids = array();
// Loop through all the graph series
foreach ($graph_config['series'] as $series_id => $series) {
// ignore series if context is not defined in json template
if (isset($series['contexts']) and
!in_array($context, $series['contexts']))
continue;
$rrd_dir = $conf_rrds . "/" .
$series['clustername'] . "/" .
$series['hostname'];
$metric = sanitize($series['metric']);
$metric_file = $rrd_dir . "/" . $metric . ".rrd";
// Make sure metric file exists. Otherwise we'll get a broken graph
if (is_file($metric_file)) {
// Need this when defining graphs that may use same metric names
$unique_id = "a" . $series_id;
$total_ids[] = $unique_id;
// use custom DS defined in json template if it's
// defined (default = 'sum')
$DS = isset($series['ds']) ? sanitize($series['ds']) : 'sum';
$seriesdef .= " DEF:'$unique_id'='$metric_file':'$DS':AVERAGE ";
if (isset($graph_config['scale']))
$cdef .=
" CDEF:'s${unique_id}'=${unique_id},${graph_config['scale']},* ";
if (isset($graph_config['percent']) && $graph_config['percent'] == '1')
$cdef .= " CDEF:'p${unique_id}'=${unique_id},total,/,100,* ";
// By default graph is a line graph
$series_type = isset($series['type']) ? $series['type'] : "line";
list($graphdef, $stack_counter) =
graphdef_add_series($graphdef,
$series,
$series_type,
$graph_config['percent'],
$graph_config['scale'],
$stack_counter,
$unique_id,
$max_label_length,
$conf_graphreport_stats,
$conf_graphreport_stat_items);
} // end of if (is_file($metric_file))
}
$show_total = isset($graph_config['show_total']) &&
($graph_config['show_total'] == 1);
if ($show_total ||
(isset($graph_config['percent']) &&
$graph_config['percent'] == '1')) {
$cdef = add_total_to_cdef($cdef,
$total_ids,
$graph_config['scale']);
if ($show_total) {
$cdef .= " LINE1:'total'#000000:'Total' ";
if ($conf_graphreport_stats)
$cdef .= legendEntry('total', $conf_graphreport_stat_items);
}
}
// If we end up with the empty series it means that no RRD files matched.
// This can happen if we are trying to create a report and metrics for
// this host were not collected. If that happens we should create an
// empty graph
if ($seriesdef == "") {
$rrdtool_graph['series'] =
'HRULE:1#FFCC33:"No matching metrics detected or RRDs not readable"';
} else {
$rrdtool_graph['series'] = $seriesdef . ' ' . $cdef . ' ' . $graphdef;
}
return $rrdtool_graph;
}
function build_aggregate_graph_config_from_url($conf_graph_colors) {
// If graph type is not specified default to line graph
$graph_type = isset($_GET["gtype"]) &&
in_array($_GET["gtype"], array("stack", "line", "percent")) ?
$_GET["gtype"] : 'line';
// If line width not specified default to 2
$line_width = isset($_GET["lw"]) &&
in_array($_GET["lw"], array("1", "2", "3")) ?
$_GET["lw"] : '2';
$graph_legend = isset($_GET["glegend"]) &&
in_array($_GET["glegend"], array("show", "hide")) ?
$_GET["glegend"] : 'show';
/////////////////////////////////////////////////////////////////////////////
// In order to reduce the load on the machine when someone is doing host
// compare we look whether host list has been supplied via hl arg.
// That way we do not have get metric cache
/////////////////////////////////////////////////////////////////////////////
if (isset($_GET['hl'])) {
$counter = 0;
$color_count = sizeof($conf_graph_colors);
$metric_name = str_replace("$",
"",
str_replace("^",
"",
$_GET['mreg'][0]));
$host_list = explode(",", $_GET['hl']);
foreach ($host_list as $host_cluster) {
$color_index = $counter % $color_count;
$parts = explode("|", $host_cluster);
$hostname = $parts[0];
$clustername = $parts[1];
$series = array("hostname" => $hostname,
"clustername" => $clustername,
"fill" => "true",
"metric" => $metric_name,
"color" => $conf_graph_colors[$color_index],
"label" => $hostname,
"type" => $graph_type);
if ($graph_type == "line" || $graph_type == "area") {
$series['line_width'] = $line_width;
} else if ($graph_type == "percent") {
$graph_config['percent'] = "1";
} else {
$series['stack'] = "1";
}
$graph_config['series'][] = $series;
$counter++;
}
} else {
$exclude_host_from_legend_label =
(array_key_exists('lgnd_xh', $_GET) &&
$_GET['lgnd_xh'] == "true") ? TRUE : FALSE;
$graph_config =
build_aggregate_graph_config($graph_type,
$line_width,
$_GET['hreg'],
$_GET['mreg'],
$graph_legend,
$exclude_host_from_legend_label);
}
// Set up
$graph_config["report_type"] = "standard";
$graph_config["vertical_label"] = isset($_GET["vl"]) ?
sanitize($_GET["vl"]) : NULL;
$graph_config["graph_scale"] = isset($_GET["gs"]) ?
sanitize($_GET["gs"]) : NULL;
$graph_config["scale"] = isset($_GET["scale"]) ?
sanitize($_GET["scale"]) : NULL;
$graph_config["show_total"] = isset($_GET["show_total"]) ?
sanitize($_GET["show_total"]) : NULL;
if (isset($_GET['title']) && $_GET['title'] != "")
$graph_config["title"] = sanitize($_GET['title']);
return $graph_config;
}
###############################################################################
# This builds rrdtool config for composite graphs that are defined directly
# in a view. It requires a view name and item id in order to be able
# to find the graph configuration. item_id needs to be unique otherwise
# only first definition will be used
###############################################################################
function rrdtool_graph_build_view_graph($rrdtool_graph,
$view_name,
$item_id,
$context,
$size,
$conf_rrds,
$conf_graphreport_stats,
$conf_graphreport_stat_items) {
$available_views = get_available_views();
foreach ($available_views as $view) {
// Find view settings
if ($view_name == $view['view_name'])
break;
}
foreach ($view['items'] as $view_item) {
if ($item_id == $view_item['item_id'])
break;
}
$rrdtool_graph =
rrdtool_graph_merge_args_from_json($rrdtool_graph,
$view_item,
$context,
$size,
$conf_rrds,
$conf_graphreport_stats,
$conf_graphreport_stat_items);
return array( $rrdtool_graph, $view_item);
}
///////////////////////////////////////////////////////////////////////////////
// Graphite graphs
///////////////////////////////////////////////////////////////////////////////
function build_graphite_series($context, $graph_config, $host_cluster = "") {
$targets = array();
$colors = array();
// Keep track of stacked items
$stacked = 0;
foreach ($graph_config['series'] as $item) {
if (isset($item['contexts']) and
!in_array($context, $item['contexts']))
continue;
if ($item['type'] == "stack")
$stacked++;
if (isset($item['hostname']) && isset($item['clustername'])) {
$host_cluster = $item['clustername'] . "." .
str_replace(".", "_", $item['hostname']);
}
$targets[] =
"target=". urlencode("alias(" .
$host_cluster . "." .
$item['metric'] .
".sum,'" . $item['label'] .
"')");
$colors[] = $item['color'];
}
$series = implode($targets, '&');
$series .= "&colorList=" . implode($colors, ',');
$series .= "&vtitle=" .
urlencode(isset($graph_config['vertical_label']) ?
$graph_config['vertical_label'] : "");
// Do we have any stacked elements. We assume if there is only one element
// that is stacked that rest of it is line graphs
if ($stacked > 0) {
if ($stacked > 1)
$series .= "&areaMode=stacked";
else
$series .= "&areaMode=first";
}
return $series;
}
function build_graphite_url($rrd_graphite_link,
$rrd_dir,
$conf,
$clustername,
$host,
$size,
$height,
$width,
$graph_config,
$context,
$metric_name,
$cs,
$ce,
$start,
$end,
$min,
$max,
$title,
$range) {
// Check whether the link exists from Ganglia RRD tree to the graphite
// storage/rrd_dir area
if (! is_link($rrd_graphite_link)) {
// Does the directory exist for the cluster. If not create it
if (! is_dir($conf['graphite_rrd_dir'] . "/" .
str_replace(" ", "_", $clustername)) )
mkdir($conf['graphite_rrd_dir'] . "/" .
str_replace(" ", "_", $clustername));
symlink($rrd_dir, str_replace(" ", "_", $rrd_graphite_link));
}
// Generate host cluster string
if (isset($clustername))
$host_cluster = str_replace(" ", "_", $clustername) . "." . $host;
else
$host_cluster = $host;
$height += 70;
if ($size == "small")
$width += 20;
// If graph_config is already set we can use it immediately
if (isset($graph_config)) {
$target = build_graphite_series($context, $graph_config, "");
} else {
if (isset($_GET['g'])) {
// if it's a report increase the height for additional 30 pixels
$height += 40;
$report_name = sanitize($_GET['g']);
$report_definition_file = $conf['gweb_root'] . "/graph.d/" .
$report_name . ".json";
// Check whether report is defined in graph.d directory
if (is_file($report_definition_file)) {
$graph_config = json_decode(file_get_contents($report_definition_file),
TRUE);
} else {
error_log("There is JSON config file specifying $report_name.");
exit(1);
}
if (isset($graph_config)) {
switch ($graph_config["report_type"]) {
case "template":
$target = str_replace("HOST_CLUSTER",
$conf['graphite_prefix'] . $host_cluster,
$graph_config["graphite"]);
break;
case "standard":
$target =
build_graphite_series($context,
$graph_config,
$conf['graphite_prefix'] . $host_cluster);
break;
default:
error_log("No valid report_type specified in the " .
$report_name .
" definition.");
break;
}
$title = $graph_config['title'];
} else {
error_log("Configuration file to $report_name exists; " .
"however, it doesn't appear it's a valid JSON file");
exit(1);
}
} else {
// It's a simple metric graph
$vlabel = isset($_GET["vl"]) ? sanitize($_GET["vl"]) : NULL;
$target = "target=" . $conf['graphite_prefix'] .
"$host_cluster.$metric_name.sum&hideLegend=true&vtitle=" .
urlencode($vlabel) .
"&areaMode=all&colorList=". $conf['default_metric_color'];
$title = " ";
}
}
if ($cs)
$start = date("H:i_Ymd", strtotime($cs));
if ($ce)
$end = date("H:i_Ymd", strtotime($ce));
if ($max == 0)
$max = "";
$graphite_url = $conf['graphite_url_base'] .
"?width=$width&height=$height&" .
$target .
"&from=" . $start . "&until=" . $end .
"&yMin=" . $min . "&yMax=" . $max .
"&bgcolor=FFFFFF&fgcolor=000000&title=" .
urlencode($title . " last " . $range);
return $graphite_url;
}
function build_value_for_json($value) {
if (is_numeric($value))
$val = floatval($value);
else
$val = $value;
return $val;
}
function get_timestamp($time) {
$timestamp = NULL;
if ($time == "-now" || $time == "now") {
$timestamp = time();
} else if (preg_match("/\-([0-9]*)(s)/", $time, $out)) {
$timestamp = time() - $out[1];
} else if (is_numeric($time)) {
$timestamp = $time;
} else {
$t = strtotime($time);
if ($t !== FALSE)
$timestamp = $t;
else
error_log("get_timestamp: ".
"Unable to convert time ${time} to Unix timestamp");
}
return $timestamp;
}
function get_nagios_events($overlay_nagios_base_url,
$host,
$start,
$end) {
$nagios_events = array();
$nagios_pull_url =
$overlay_nagios_base_url .
'/cgi-bin/api.cgi?action=host.gangliaevents' .
'&host=' . urlencode($host) .
'&start=' . urlencode($start) .
'&end=' . urlencode($end);
$raw_nagios_events =
@file_get_contents(
$nagios_pull_url,
0,
stream_context_create(array('http' => array('timeout' => 5),
'https' => array('timeout' => 5))));
if (strlen($raw_nagios_events) > 3) {
$nagios_events = json_decode($raw_nagios_events, TRUE);
// Handle any "ERROR" formatted messages and wipe resulting array.
if (isset($nagios_events['response_type']) &&
$nagios_events['response_type'] == 'ERROR') {
$nagios_events = array();
}
}
return $nagios_events;
}
function rrdgraph_cmd_add_overlay_events($command,
$graph_start,
$graph_end,
$conf_overlay_events_color_map_file,
$conf_overlay_events_shade_alpha,
$conf_overlay_events_tick_alpha,
$conf_overlay_events_line_type,
$conf_graph_colors,
$nagios_events) {
$debug = FALSE;
// In order not to pollute the command line with all the possible VRULEs
// we need to find the time range for the graph
$graph_end_timestamp = get_timestamp($graph_end);
$graph_start_timestamp = get_timestamp($graph_start);
if (($graph_start_timestamp == NULL) ||
($graph_end_timestamp == NULL)) {
error_log("process_over_events: ".
"Start/end timestamp(s) are NULL");
return $command;
}
// Get array of events for time range
$events_array = ganglia_events_get($graph_start_timestamp,
$graph_end_timestamp);
if (empty($events_array))
return $command;
$event_color_json = file_get_contents($conf_overlay_events_color_map_file);
if ($debug)
error_log("$event_color_json");
$event_color_array = json_decode($event_color_json, TRUE);
$initial_event_color_count = count($event_color_array);
$event_color_map = array();
foreach ($event_color_array as $event_color_entry) {
$event_color_map[$event_color_entry['summary']] =
$event_color_entry['color'];
if ($debug)
error_log("Adding event color to map: " .
$event_color_entry['summary'] .
' ' .
$event_color_entry['color']);
}
// Combine the nagios_events array, if it exists
if (count($nagios_events) > 0) {
// World's dumbest array merge:
foreach ($nagios_events as $ne) {
$events_array[] = $ne;
}
}
foreach ($events_array as $key => $row) {
$start_time[$key] = $row['start_time'];
}
// Sort events in reverse chronological order
array_multisort($start_time, SORT_DESC, $events_array);
// Default to dashed line unless events_line_type is set to solid
if ($conf_overlay_events_line_type == "solid")
$overlay_events_line_type = "";
else
$overlay_events_line_type = ":dashes";
// Preserve original rrdtool command. That's the one we'll run regex checks
// against
$original_command = $command;
// Loop through all the events
$color_count = sizeof($conf_graph_colors);
$counter = 0;
$legend_items = array();
foreach ($events_array as $id => $event) {
$evt_start = $event['start_time'];
// Make sure it's a number
if (! is_numeric($evt_start)) {
continue;
}
unset($evt_end);
if (array_key_exists('end_time', $event) &&
is_numeric($event['end_time'])) {
$evt_end = $event['end_time'];
}
// If event start is less than start bail out of the loop since
// there is nothing more to do since events are sorted in reverse
// chronological order and these events are not gonna show up in
// the graph
$in_graph = (($evt_start >= $graph_start_timestamp) &&
($evt_start <= $graph_end_timestamp)) ||
(isset($evt_end) &&
($evt_end >= $graph_start_timestamp) &&
($evt_start <= $graph_end_timestamp));
if (!$in_graph) {
if ($debug)
error_log("process_overlay_events: " .
"Event [$evt_start] does not overlap with graph " .
"[$graph_start_timestamp, $graph_end_timestamp]");
continue;
}
// Compute the part of the event to be displayed
$evt_start_in_graph_range = TRUE;
if ($evt_start < $graph_start_timestamp) {
$evt_start = $graph_start_timestamp;
$evt_start_in_graph_range = FALSE;
}
$evt_end_in_graph_range = TRUE;
if (isset($evt_end)) {
if ($evt_end > $graph_end_timestamp) {
$evt_end = $graph_end_timestamp;
$evt_end_in_graph_range = FALSE;
}
} else
$evt_end_in_graph_range = FALSE;
if (preg_match("/" . $event["host_regex"] . "/", $original_command)) {
if ($evt_start >= $graph_start_timestamp) {
// Do we have the end timestamp.
if (!isset($graph_end_timestamp) ||
($evt_start < $graph_end_timestamp)) {
// This is a potential vector since this gets added to the
// command line_width TODO: Look over sanitize
$summary =
isset($event['summary']) ? sanitize($event['summary']) : "";
// We need to keep track of summaries so that if we have identical
// summaries e.g. Deploy we can use the same color
if (array_key_exists($summary, $event_color_map)) {
$color = $event_color_map[$summary];
if ($debug)
error_log("process_overlay_events: " .
"Found existing color: $summary $color");
// Reset summary to empty string if it is already present in
// the legend
if (array_key_exists($summary, $legend_items))
$summary = "";
else
$legend_items[$summary] = TRUE;
} else {
// Haven't seen this summary before. Assign it a color
$color_index = count($event_color_map) % $color_count;
$color = $conf_graph_colors[$color_index];
$event_color_map[$summary] = $color;
$event_color_array[] = array('summary' => $summary,
'color' => $color);
if ($debug)
error_log("process_overlay_events: " .
"Adding new event color: $summary $color");
}
if (isset($evt_end)) {
// Attempt to draw a shaded area between start and end points.
// Force solid line for ranges
$overlay_events_line_type = "";
$start_vrule = '';
if ($evt_start_in_graph_range)
$start_vrule = " VRULE:" . $evt_start .
"#$color" . $conf_overlay_events_tick_alpha .
":\"" . $summary . "\"" . $overlay_events_line_type;
$end_vrule = '';
if ($evt_end_in_graph_range)
$end_vrule = " VRULE:" . $evt_end .
"#$color" . $conf_overlay_events_tick_alpha .
':""' . $overlay_events_line_type;
// We need a dummpy DEF statement, because RRDtool is too stupid
// to plot graphs without a DEF statement.
// We can't count on a static name, so we have to "find" one.
if (preg_match("/DEF:['\"]?(\w+)['\"]?=/", $command, $matches)) {
// stupid rrdtool limitation.
$area_cdef =
" CDEF:area_$counter=$matches[1],POP," .
"TIME,$evt_start,GT,1,UNKN,IF,TIME,$evt_end,LT,1,UNKN,IF,+";
$area_shade = $color . $conf_overlay_events_shade_alpha;
$area = " TICK:area_$counter#$area_shade:1";
if (!$evt_start_in_graph_range)
$area .= ':"' . $summary . '"';
$command .= "$area_cdef $area $start_vrule $end_vrule";
} else {
error_log("No DEF statements found in \$command?!");
}
} else {
$command .= " VRULE:" . $evt_start . "#" . $color .
":\"" . $summary . "\"" . $overlay_events_line_type;
}
$counter++;
} else {
if ($debug)
error_log("process_overlay_events: " .
"Event start [$evt_start] >= graph end " .
"[$graph_end_timestamp]");
}
} else {
if ($debug)
error_log("process_overlay_events: " .
"Event start [$evt_start] < graph start " .
"[$graph_start_timestamp]");
}
} // end of if ( preg_match ...
else {
// error_log("Doesn't match host_regex");
}
} // end of foreach ( $events_array ...
unset($events_array);
if (count($event_color_array) > $initial_event_color_count) {
$event_color_json = json_encode($event_color_array);
file_put_contents($conf_overlay_events_color_map_file,
$event_color_json);
}
return $command;
}
function process_graph_arguments($graph) {
$graph_report = $graph;
$graph_arguments = array();
$pos = strpos($graph, ",");
if ($pos !== FALSE) {
$graph_report = substr($graph, 0, $pos);
$args = str_getcsv(substr($graph, $pos + 1), ",", "'");
/*
ob_start();
var_dump($args);
$result = ob_get_clean();
error_log("args = $result");
*/
foreach ($args as $arg) {
if (is_numeric($arg)) {
if (ctype_digit($arg))
$graph_arguments[] = intval($arg);
else
$graph_arguments[] = floatval($arg);
} else
$graph_arguments[] = $arg;
}
}
return array($graph_report, $graph_arguments);
}
##############################################################################
# Build rrdtool command line
##############################################################################
function rrdgraph_cmd_build($rrdtool_graph,
$vlabel,
$conf,
$graph_config,
$max,
$min,
$user_trend_range,
$user_trend_history,
$user_trend_line,
$user_clustername,
$rrd_options,
$range,
$title,
$subtitle,
$size,
$context,
$grid,
$raw_host,
$graph,
$graph_arguments) {
if (! isset($graph_config)) {
$php_report_file = $conf['graphdir'] . "/" . $graph . ".php";
$json_report_file = $conf['graphdir'] . "/" . $graph . ".json";
if (is_file($php_report_file)) {
// Check for path traversal issues by making sure real path is
// actually in graphdir
if (dirname(realpath($php_report_file)) != $conf['graphdir']) {
$rrdtool_graph['series'] =
'HRULE:1#FFCC33:"Check \$conf[graphdir] should not be relative path"';
} else {
$graph_function = "graph_${graph}";
if ($conf['enable_pass_in_arguments_to_optional_graphs'] &&
count($graph_arguments)) {
$rrdtool_graph['arguments'] = $graph_arguments;
// Pass by reference call, $rrdtool_graph modified inplace
$graph_function($rrdtool_graph);
unset($rrdtool_graph['arguments']);
} else {
$graph_function($rrdtool_graph);
}
}
} else if (is_file($json_report_file )) {
if (dirname(realpath($json_report_file)) != $conf['graphdir']) {
$rrdtool_graph['series'] =
'HRULE:1#FFCC33:"Check \$conf[graphdir] should not be relative path"';
} else {
$graph_config =
json_decode(file_get_contents($json_report_file), TRUE );
// We need to add hostname and clustername if it's not specified
foreach (array_keys($graph_config['series']) as $series_id) {
if (! isset($graph_config['series'][$index]['hostname'])) {
$graph_config['series'][$series_id]['hostname'] = $raw_host;
if (isset($grid))
$graph_config['series'][$series_id]['clustername'] = $grid;
else
$graph_config['series'][$series_id]['clustername'] =
$user_clustername;
}
}
$rrdtool_graph =
rrdtool_graph_merge_args_from_json($rrdtool_graph,
$graph_config,
$context,
$size,
$conf['rrds'],
$conf['graphreport_stats'],
$conf['graphreport_stat_items']);
}
}
} else {
$rrdtool_graph =
rrdtool_graph_merge_args_from_json($rrdtool_graph,
$graph_config,
$context,
$size,
$conf['rrds'],
$conf['graphreport_stats'],
$conf['graphreport_stat_items']);
}
// We must have a 'series' value, or this is all for naught
if (!array_key_exists('series', $rrdtool_graph) ||
!strlen($rrdtool_graph['series'])) {
$rrdtool_graph['series'] =
'HRULE:1#FFCC33:"Empty RRDtool command. Likely bad graph config"';
}
// Make small graphs (host list) cleaner by removing the too-big
// legend: it is displayed above on larger cluster summary graphs.
if (($size == "small" and ! isset($subtitle)) ||
($graph_config["glegend"] == "hide"))
$rrdtool_graph['extras'] = isset($rrdtool_graph['extras']) ?
$rrdtool_graph['extras'] . " -g" : " -g" ;
// add slope-mode if rrdtool_slope_mode is set
if (isset($conf['rrdtool_slope_mode']) &&
$conf['rrdtool_slope_mode'] == TRUE)
$rrdtool_graph['slope-mode'] = '';
if (isset($rrdtool_graph['title']) && isset($title)) {
if ($conf['decorated_graph_title'])
$rrdtool_graph['title'] = $title . " " .
$rrdtool_graph['title'] .
" last $range";
}
$command = $conf['rrdtool'] . " graph - $rrd_options ";
// Look ahead six months
if ($user_trend_line) {
// We may only want to use last x months of data since for example
// if we are trending disk we may have added a disk recently which will
// skew a trend line. By default we'll use 6 months however we'll let
// user define this if they want to.
$rrdtool_graph['start'] = "-" . $user_trend_history * 2592000 . "s";
// Project the trend line this many months ahead
$rrdtool_graph['end'] = "+" . $user_trend_range * 2592000 . "s";
}
if ($max)
$rrdtool_graph['upper-limit'] = $max;
if ($min)
$rrdtool_graph['lower-limit'] = $min;
if (isset($graph_config['percent']) &&
$graph_config['percent'] == '1' ) {
$rrdtool_graph['upper-limit'] = 100;
$rrdtool_graph['lower-limit'] = 0;
}
if ($max ||
$min ||
(isset($graph_config['percent']) && $graph_config['percent'] == '1'))
$rrdtool_graph['extras'] = isset($rrdtool_graph['extras']) ?
$rrdtool_graph['extras'] . " --rigid" : " --rigid" ;
if (isset($graph_config['graph_scale'])) {
// Log scale support
if ($graph_config['graph_scale'] == 'log') {
$rrdtool_graph['extras'] = isset($rrdtool_graph['extras']) ?
$rrdtool_graph['extras'] . " --logarithm --units=si" :
" --logarithm --units=si" ;
if (!isset($rrdtool_graph['lower-limit']) ||
$rrdtool_graph['lower-limit'] < 1) {
// With log scale, the lower limit *has* to be 1 or greater.
$rrdtool_graph['lower-limit'] = 1;
}
}
}
if ($conf['rrdtool_base_1024'] &&
in_array($vlabel, array('bytes',
'Bytes',
'bytes/s',
'Bytes/s',
'kB',
'MB',
'GB',
'bits',
'Bits',
'bits/s',
'Bits/s'))) {
// Set graph base value to 1024
$rrdtool_graph['extras'] = isset($rrdtool_graph['extras']) ?
$rrdtool_graph['extras'] . " --base=1024" : " --base=1024" ;
}