PHP rrdtool_execute函数代码示例

//.........这里部分代码省略.........
		/* if we are not displaying a legend there is no point in us even processing the auto padding,
		text format stuff. */
		if ((!isset($graph_data_array["graph_nolegend"])) && ($graph["auto_padding"] == "on") && (isset($text_format_lengths{$graph_item["data_template_rrd_id"]}))) {
			/* we are basing how much to pad on area and stack text format,
			not gprint. but of course the padding has to be displayed in gprint,
			how fun! */

			$pad_number = ($greatest_text_format - $text_format_lengths{$graph_item["data_template_rrd_id"]});
			//cacti_log("MAX: $greatest_text_format, CURR: $text_format_lengths[$item_dsid], DSID: $item_dsid");
			$text_padding = str_pad("", $pad_number);

			/* two GPRINT's in a row screws up the padding, lets not do that */
			if (($graph_item_types{$graph_item["graph_type_id"]} == "GPRINT") && ($last_graph_type == "GPRINT")) {
				$text_padding = "";
			}

			$last_graph_type = $graph_item_types{$graph_item["graph_type_id"]};
		}

		/* we put this in a variable so it can be manipulated before mainly used
		if we want to skip it, like below */
		$current_graph_item_type = $graph_item_types{$graph_item["graph_type_id"]};

		/* IF this graph item has a data source... get a DEF name for it, or the cdef if that applies
		to this graph item */
		if ($graph_item["cdef_id"] == "0") {
			if (isset($cf_ds_cache{$graph_item["data_template_rrd_id"]}[$cf_id])) {
				$data_source_name = generate_graph_def_name(strval($cf_ds_cache{$graph_item["data_template_rrd_id"]}[$cf_id]));
			}else{
				$data_source_name = "";
			}
		}else{
			$data_source_name = "cdef" . generate_graph_def_name(strval($cdef_cache{$graph_item["cdef_id"]}{$graph_item["data_template_rrd_id"]}[$cf_id]));
		}

		/* to make things easier... if there is no text format set; set blank text */
		if (!isset($graph_variables["text_format"][$graph_item_id])) {
			$graph_variables["text_format"][$graph_item_id] = "";
		}

		if (!isset($hardreturn[$graph_item_id])) {
			$hardreturn[$graph_item_id] = "";
		}

		/* +++++++++++++++++++++++ GRAPH ITEMS +++++++++++++++++++++++ */

		/* most of the calculations have been done above. now we have for print everything out
		in an RRDTool-friendly fashion */
		if (ereg("^(AREA|STACK|LINE[123])$", $graph_item_types{$graph_item["graph_type_id"]})) {
			$graph_variables["text_format"][$graph_item_id] = str_replace(":", "\:", $graph_variables["text_format"][$graph_item_id]); /* escape colons */
			$txt_graph_items .= $graph_item_types{$graph_item["graph_type_id"]} . ":" . $data_source_name . "#" . $graph_item["hex"] . ":" . "\"" . $graph_variables["text_format"][$graph_item_id] . $hardreturn[$graph_item_id] . "\" ";
		}elseif ($graph_item_types{$graph_item["graph_type_id"]} == "COMMENT") {
			$txt_graph_items .= $graph_item_types{$graph_item["graph_type_id"]} . ":\"" . $graph_variables["text_format"][$graph_item_id] . $hardreturn[$graph_item_id] . "\" ";
		}elseif (($graph_item_types{$graph_item["graph_type_id"]} == "GPRINT") && (!isset($graph_data_array["graph_nolegend"]))) {
			$graph_variables["text_format"][$graph_item_id] = str_replace(":", "\:", $graph_variables["text_format"][$graph_item_id]); /* escape colons */
			$txt_graph_items .= $graph_item_types{$graph_item["graph_type_id"]} . ":" . $data_source_name . ":" . $consolidation_functions{$graph_item["consolidation_function_id"]} . ":\"$text_padding" . $graph_variables["text_format"][$graph_item_id] . $graph_item["gprint_text"] . $hardreturn[$graph_item_id] . "\" ";
		}elseif ($graph_item_types{$graph_item["graph_type_id"]} == "HRULE") {
			$graph_variables["text_format"][$graph_item_id] = str_replace(":", "\:", $graph_variables["text_format"][$graph_item_id]); /* escape colons */
			$graph_variables["value"][$graph_item_id] = str_replace(":", "\:", $graph_variables["value"][$graph_item_id]); /* escape colons */
			$txt_graph_items .= $graph_item_types{$graph_item["graph_type_id"]} . ":" . $graph_variables["value"][$graph_item_id] . "#" . $graph_item["hex"] . ":\"" . $graph_variables["text_format"][$graph_item_id] . $hardreturn[$graph_item_id] . "\" ";
		}elseif ($graph_item_types{$graph_item["graph_type_id"]} == "VRULE") {
			$graph_variables["text_format"][$graph_item_id] = str_replace(":", "\:", $graph_variables["text_format"][$graph_item_id]); /* escape colons */

			$value_array = explode(":", $graph_item["value"]);

			if ($value_array[0] < 0) {
				$value = date("U") - (-3600 * $value_array[0]) - 60 * $value_array[1];
			}else{
				$value = date("U", mktime($value_array[0],$value_array[1],0));
			}

			$txt_graph_items .= $graph_item_types{$graph_item["graph_type_id"]} . ":" . $value . "#" . $graph_item["hex"] . ":\"" . $graph_variables["text_format"][$graph_item_id] . $hardreturn[$graph_item_id] . "\" ";
		}

		$i++;

		if ($i < sizeof($graph_items)) {
			$txt_graph_items .= RRD_NL;
		}
	}
	}

	/* either print out the source or pass the source onto rrdtool to get us a nice PNG */
	if (isset($graph_data_array["print_source"])) {
		print "<PRE>" . read_config_option("path_rrdtool") . " graph $graph_opts$graph_defs$txt_graph_items</PRE>";
	}else{
		if (isset($graph_data_array["export"])) {
			rrdtool_execute("graph $graph_opts$graph_defs$txt_graph_items", false, RRDTOOL_OUTPUT_NULL, $rrd_struc);
			return 0;
		}else{
			if (isset($graph_data_array["output_flag"])) {
				$output_flag = $graph_data_array["output_flag"];
			}else{
				$output_flag = RRDTOOL_OUTPUT_GRAPH_DATA;
			}

			return rrdtool_execute("graph $graph_opts$graph_defs$txt_graph_items", false, $output_flag, $rrd_struc);
		}
	}
}

//.........这里部分代码省略.........
			if (isset($magic_item["ALL_DATA_SOURCES_DUPS"])) {
				$cdef_string = str_replace("ALL_DATA_SOURCES_DUPS", $magic_item["ALL_DATA_SOURCES_DUPS"], $cdef_string);
			}
			if (isset($magic_item["ALL_DATA_SOURCES_NODUPS"])) {
				$cdef_string = str_replace("ALL_DATA_SOURCES_NODUPS", $magic_item["ALL_DATA_SOURCES_NODUPS"], $cdef_string);
			}
			if (isset($magic_item["SIMILAR_DATA_SOURCES_DUPS"])) {
				$cdef_string = str_replace("SIMILAR_DATA_SOURCES_DUPS", $magic_item["SIMILAR_DATA_SOURCES_DUPS"], $cdef_string);
			}
			if (isset($magic_item["SIMILAR_DATA_SOURCES_NODUPS"])) {
				$cdef_string = str_replace("SIMILAR_DATA_SOURCES_NODUPS", $magic_item["SIMILAR_DATA_SOURCES_NODUPS"], $cdef_string);
			}

			/* COUNT_ALL|SIMILAR_DATA_SOURCES(NO)?DUPS are to be replaced here */
			if (isset($magic_item["COUNT_ALL_DS_DUPS"])) {
				$cdef_string = str_replace("COUNT_ALL_DS_DUPS", $magic_item["COUNT_ALL_DS_DUPS"], $cdef_string);
			}
			if (isset($magic_item["COUNT_ALL_DS_NODUPS"])) {
				$cdef_string = str_replace("COUNT_ALL_DS_NODUPS", $magic_item["COUNT_ALL_DS_NODUPS"], $cdef_string);
			}
			if (isset($magic_item["COUNT_SIMILAR_DS_DUPS"])) {
				$cdef_string = str_replace("COUNT_SIMILAR_DS_DUPS", $magic_item["COUNT_SIMILAR_DS_DUPS"], $cdef_string);
			}
			if (isset($magic_item["COUNT_SIMILAR_DS_NODUPS"])) {
				$cdef_string = str_replace("COUNT_SIMILAR_DS_NODUPS", $magic_item["COUNT_SIMILAR_DS_NODUPS"], $cdef_string);
			}

			/* data source item variables */
			$cdef_string = str_replace("CURRENT_DS_MINIMUM_VALUE", (empty($xport_item["rrd_minimum"]) ? "0" : $xport_item["rrd_minimum"]), $cdef_string);
			$cdef_string = str_replace("CURRENT_DS_MAXIMUM_VALUE", (empty($xport_item["rrd_maximum"]) ? "0" : $xport_item["rrd_maximum"]), $cdef_string);
			$cdef_string = str_replace("CURRENT_GRAPH_MINIMUM_VALUE", (empty($graph["lower_limit"]) ? "0" : $graph["lower_limit"]), $cdef_string);
			$cdef_string = str_replace("CURRENT_GRAPH_MAXIMUM_VALUE", (empty($graph["upper_limit"]) ? "0" : $graph["upper_limit"]), $cdef_string);

			/* replace query variables in cdefs */
			$cdef_string = rrd_substitute_host_query_data($cdef_string, $graph, $xport_item);

			/* make the initial "virtual" cdef name: 'cdef' + [a,b,c,d...] */
			$cdef_xport_defs .= "CDEF:cdef" . generate_graph_def_name(strval($i)) . "=";
			$cdef_xport_defs .= $cdef_string;
			$cdef_xport_defs .= " \\\n";

			/* the CDEF cache is so we do not create duplicate CDEF's on a graph */
			$cdef_cache{$xport_item["cdef_id"]}{$xport_item["data_template_rrd_id"]}[$cf_id] = "$i";
		}

		/* add the cdef string to the end of the def string */
		$xport_defs .= $cdef_xport_defs;

		/* note the current item_id for easy access */
		$xport_item_id = $xport_item["graph_templates_item_id"];

		/* IF this graph item has a data source... get a DEF name for it, or the cdef if that applies
		to this graph item */
		if ($xport_item["cdef_id"] == "0") {
			if (isset($cf_ds_cache{$xport_item["data_template_rrd_id"]}[$cf_id])) {
				$data_source_name = generate_graph_def_name(strval($cf_ds_cache{$xport_item["data_template_rrd_id"]}[$cf_id]));
			}else{
				$data_source_name = "";
			}
		}else{
			$data_source_name = "cdef" . generate_graph_def_name(strval($cdef_cache{$xport_item["cdef_id"]}{$xport_item["data_template_rrd_id"]}[$cf_id]));
		}

		/* +++++++++++++++++++++++ XPORT ITEMS +++++++++++++++++++++++ */

		$need_rrd_nl = TRUE;
		if (ereg("^(AREA|LINE[123]|STACK)$", $graph_item_types{$xport_item["graph_type_id"]})) {
			/* give all export items a name */
			if (trim($xport_variables["text_format"][$xport_item_id]) == "") {
				$legend_name = "col" . $j . "-" . $data_source_name;
			}else{
				$legend_name = $xport_variables["text_format"][$xport_item_id];
			}
			$j++;

			$txt_xport_items .= "XPORT:" . $data_source_name . ":" . "\"" . str_replace(":", "", $legend_name) . "\"";
		}else{
			$need_rrd_nl = FALSE;
		}

		$i++;

		if (($i < sizeof($xport_items)) && ($need_rrd_nl)) {
			$txt_xport_items .= RRD_NL;
		}
	}
	}

	$output_flag = RRDTOOL_OUTPUT_STDOUT;

	$xport_array = rrdxport2array(rrdtool_execute("xport $xport_opts$xport_defs$txt_xport_items", false, $output_flag, $rrd_struc));

	/* add host and graph information */
	$xport_array["meta"]["title_cache"]    = $graph["title_cache"];
	$xport_array["meta"]["vertical_label"] = $graph["vertical_label"];
	$xport_array["meta"]["local_graph_id"] = $local_graph_id;
	$xport_array["meta"]["host_id"]        = $graph["host_id"];

	return $xport_array;
}

function get_rrd_cfs($local_data_id)
{
    global $rrd_cfs, $consolidation_functions;
    $rrdfile = get_data_source_path($local_data_id, TRUE);
    if (!isset($rrd_cfs)) {
        $rrd_cfs = array();
    } else {
        if (array_key_exists($local_data_id, $rrd_cfs)) {
            return $rrd_cfs[$local_data_id];
        }
    }
    $cfs = array();
    $output = rrdtool_execute("info {$rrdfile}", FALSE, RRDTOOL_OUTPUT_STDOUT);
    /* search for
     * 		rra[0].cf = "LAST"
     * or similar
     */
    if (strlen($output)) {
        $output = explode("\n", $output);
        if (sizeof($output)) {
            foreach ($output as $line) {
                if (substr_count($line, ".cf")) {
                    $values = explode("=", $line);
                    if (!in_array(trim($values[1], '" '), $cfs)) {
                        $cfs[] = trim($values[1], '" ');
                    }
                }
            }
        }
    }
    $new_cfs = array();
    if (sizeof($cfs)) {
        foreach ($cfs as $cf) {
            switch ($cf) {
                case "AVG":
                case "AVERAGE":
                    $new_cfs[] = array_search('AVERAGE', $consolidation_functions);
                    break;
                case "MIN":
                    $new_cfs[] = array_search('MIN', $consolidation_functions);
                    break;
                case "MAX":
                    $new_cfs[] = array_search('MAX', $consolidation_functions);
                    break;
                case "LAST":
                    $new_cfs[] = array_search('LAST', $consolidation_functions);
                    break;
            }
        }
    }
    $rrd_cfs[$local_data_id] = $new_cfs;
    return $new_cfs;
}

//.........这里部分代码省略.........
                    } elseif ($graph_item_types[$graph_item["graph_type_id"]] == "HRULE") {
                        $graph_variables["text_format"][$graph_item_id] = str_replace(":", "\\:", $graph_variables["text_format"][$graph_item_id]);
                        /* escape colons */
                        $graph_variables["value"][$graph_item_id] = str_replace(":", "\\:", $graph_variables["value"][$graph_item_id]);
                        /* escape colons */
                        /* perform variable substitution; if this does not return a number, rrdtool will FAIL! */
                        $substitute = rrd_substitute_host_query_data($graph_variables["value"][$graph_item_id], $graph, $graph_item);
                        if (is_numeric($substitute)) {
                            $graph_variables["value"][$graph_item_id] = $substitute;
                        }
                        $txt_graph_items .= $graph_item_types[$graph_item["graph_type_id"]] . ":" . $graph_variables["value"][$graph_item_id] . $graph_item_color_code . ":" . cacti_escapeshellarg($graph_variables["text_format"][$graph_item_id] . $hardreturn[$graph_item_id]) . " ";
                    } elseif ($graph_item_types[$graph_item["graph_type_id"]] == "VRULE") {
                        $graph_variables["text_format"][$graph_item_id] = str_replace(":", "\\:", $graph_variables["text_format"][$graph_item_id]);
                        /* escape colons */
                        if (substr_count($graph_item["value"], ":")) {
                            $value_array = explode(":", $graph_item["value"]);
                            if ($value_array[0] < 0) {
                                $value = date("U") - -3600 * $value_array[0] - 60 * $value_array[1];
                            } else {
                                $value = date("U", mktime($value_array[0], $value_array[1], 0));
                            }
                        } else {
                            if (is_numeric($graph_item["value"])) {
                                $value = $graph_item["value"];
                            }
                        }
                        $txt_graph_items .= $graph_item_types[$graph_item["graph_type_id"]] . ":" . $value . $graph_item_color_code . ":" . cacti_escapeshellarg($graph_variables["text_format"][$graph_item_id] . $hardreturn[$graph_item_id]) . " ";
                    }
                } else {
                    $need_rrd_nl = FALSE;
                }
            } else {
                if (preg_match("/^(AREA|LINE[123]|STACK)\$/", $graph_item_types[$graph_item["graph_type_id"]])) {
                    /* give all export items a name */
                    if (trim($graph_variables["text_format"][$graph_item_id]) == "") {
                        $legend_name = "col" . $j . "-" . $data_source_name;
                    } else {
                        $legend_name = $graph_variables["text_format"][$graph_item_id];
                    }
                    $stacked_columns["col" . $j] = $graph_item_types[$graph_item["graph_type_id"]] == "STACK" ? 1 : 0;
                    $j++;
                    $txt_graph_items .= "XPORT:" . cacti_escapeshellarg($data_source_name) . ":" . str_replace(":", "", cacti_escapeshellarg($legend_name));
                } else {
                    $need_rrd_nl = FALSE;
                }
            }
            $i++;
            if ($i < sizeof($graph_items) && $need_rrd_nl) {
                $txt_graph_items .= RRD_NL;
            }
        }
    }
    if (!isset($graph_data_array['export_csv']) || $graph_data_array['export_csv'] != true) {
        $graph_array = api_plugin_hook_function('rrd_graph_graph_options', array('graph_opts' => $graph_opts, 'graph_defs' => $graph_defs, 'txt_graph_items' => $txt_graph_items, 'graph_id' => $local_graph_id, 'start' => $graph_start, 'end' => $graph_end));
        if (!empty($graph_array)) {
            $graph_defs = $graph_array['graph_defs'];
            $txt_graph_items = $graph_array['txt_graph_items'];
            $graph_opts = $graph_array['graph_opts'];
        }
        /* either print out the source or pass the source onto rrdtool to get us a nice PNG */
        if (isset($graph_data_array["print_source"])) {
            print "<PRE>" . htmlspecialchars(read_config_option("path_rrdtool") . " graph " . $graph_opts . $graph_defs . $txt_graph_items) . "</PRE>";
        } else {
            if (isset($graph_data_array["export"])) {
                rrdtool_execute("graph {$graph_opts}{$graph_defs}{$txt_graph_items}", false, RRDTOOL_OUTPUT_NULL, $rrdtool_pipe);
                return 0;
            } elseif (isset($graph_data_array['export_realtime'])) {
                $output_flag = RRDTOOL_OUTPUT_GRAPH_DATA;
                $output = rrdtool_execute("graph {$graph_opts}{$graph_defs}{$txt_graph_items}", false, $output_flag, $rrdtool_pipe);
                //cacti_log(str_replace(RRD_NL, ' ', "rrdtool graph $graph_opts$graph_defs$txt_graph_items"));
                if ($fp = fopen($graph_data_array['export_realtime'], 'w')) {
                    fwrite($fp, $output, strlen($output));
                    fclose($fp);
                    chmod($graph_data_array['export_realtime'], 0644);
                }
                return $output;
            } else {
                $graph_data_array = boost_prep_graph_array($graph_data_array);
                if (!isset($graph_data_array["output_flag"])) {
                    $output_flag = RRDTOOL_OUTPUT_GRAPH_DATA;
                } else {
                    $output_flag = $graph_data_array["output_flag"];
                }
                $output = rrdtool_execute("graph {$graph_opts}{$graph_defs}{$txt_graph_items}", false, $output_flag, $rrdtool_pipe);
                boost_graph_set_file($output, $local_graph_id, $rra_id);
                return $output;
            }
        }
    } else {
        $output_flag = RRDTOOL_OUTPUT_STDOUT;
        $xport_array = rrdxport2array(rrdtool_execute("xport {$graph_opts}{$graph_defs}{$txt_graph_items}", false, $output_flag));
        /* add host and graph information */
        $xport_array["meta"]["stacked_columns"] = $stacked_columns;
        $xport_array["meta"]["title_cache"] = cacti_escapeshellarg($graph["title_cache"]);
        $xport_array["meta"]["vertical_label"] = cacti_escapeshellarg($graph["vertical_label"]);
        $xport_array["meta"]["local_graph_id"] = $local_graph_id;
        $xport_array["meta"]["host_id"] = $graph["host_id"];
        return $xport_array;
    }
}

//.........这里部分代码省略.........

		if ($graph_item_types{$graph_item["graph_type_id"]} == "COMMENT") {
			if (read_config_option("rrdtool_version") != "rrd-1.0.x") {
				$comment_string = $graph_item_types{$graph_item["graph_type_id"]} . ":\"" . str_replace(":", "\:", $graph_variables["text_format"][$graph_item_id]) . $hardreturn[$graph_item_id] . "\" ";
				if (trim($comment_string) == 'COMMENT:"\n"') {
					$txt_graph_items .= 'COMMENT:" \n"'; # rrdtool will skip a COMMENT that holds a NL only; so add a blank to make NL work
				} else if (trim($comment_string) != "COMMENT:\"\"") {
					$txt_graph_items .= rrd_substitute_host_query_data($comment_string, $graph, $graph_item);
				}
			}else {
				$comment_string = $graph_item_types{$graph_item["graph_type_id"]} . ":\"" . $graph_variables["text_format"][$graph_item_id] . $hardreturn[$graph_item_id] . "\" ";
				if (trim($comment_string) == 'COMMENT:"\n"') {
					$txt_graph_items .= 'COMMENT:" \n"'; # rrdtool will skip a COMMENT that holds a NL only; so add a blank to make NL work
				} else if (trim($comment_string) != "COMMENT:\"\"") {
					$txt_graph_items .= rrd_substitute_host_query_data($comment_string, $graph, $graph_item);
				}
			}
		}elseif (($graph_item_types{$graph_item["graph_type_id"]} == "GPRINT") && (!isset($graph_data_array["graph_nolegend"]))) {
			$graph_variables["text_format"][$graph_item_id] = str_replace(":", "\:", $graph_variables["text_format"][$graph_item_id]); /* escape colons */
			$txt_graph_items .= $graph_item_types{$graph_item["graph_type_id"]} . ":" . $data_source_name . ":" . $consolidation_functions{$graph_item["consolidation_function_id"]} . ":\"$text_padding" . $graph_variables["text_format"][$graph_item_id] . $graph_item["gprint_text"] . $hardreturn[$graph_item_id] . "\" ";
		}elseif (ereg("^(AREA|LINE[123]|STACK|HRULE|VRULE)$", $graph_item_types{$graph_item["graph_type_id"]})) {

			/* initialize any color syntax for graph item */
			if (empty($graph_item["hex"])) {
				$graph_item_color_code = "";
			}else{
				$graph_item_color_code = "#" . $graph_item["hex"];
				if (read_config_option("rrdtool_version") != "rrd-1.0.x") {
					$graph_item_color_code .= $graph_item["alpha"];
				}
			}

			if (ereg("^(AREA|LINE[123])$", $graph_item_types{$graph_item["graph_type_id"]})) {
				$graph_item_stack_type = $graph_item_types{$graph_item["graph_type_id"]};
				$graph_variables["text_format"][$graph_item_id] = str_replace(":", "\:", $graph_variables["text_format"][$graph_item_id]); /* escape colons */
				$txt_graph_items .= $graph_item_types{$graph_item["graph_type_id"]} . ":" . $data_source_name . $graph_item_color_code . ":" . "\"" . $graph_variables["text_format"][$graph_item_id] . $hardreturn[$graph_item_id] . "\" ";
			}elseif ($graph_item_types{$graph_item["graph_type_id"]} == "STACK") {
				if (read_config_option("rrdtool_version") != "rrd-1.0.x") {
					$graph_variables["text_format"][$graph_item_id] = str_replace(":", "\:", $graph_variables["text_format"][$graph_item_id]); /* escape colons */
					$txt_graph_items .= $graph_item_stack_type . ":" . $data_source_name . $graph_item_color_code . ":" . "\"" . $graph_variables["text_format"][$graph_item_id] . $hardreturn[$graph_item_id] . "\":STACK";
				}else {
					$graph_variables["text_format"][$graph_item_id] = str_replace(":", "\:", $graph_variables["text_format"][$graph_item_id]); /* escape colons */
					$txt_graph_items .= $graph_item_types{$graph_item["graph_type_id"]} . ":" . $data_source_name . $graph_item_color_code . ":" . "\"" . $graph_variables["text_format"][$graph_item_id] . $hardreturn[$graph_item_id] . "\" ";
				}
			}elseif ($graph_item_types{$graph_item["graph_type_id"]} == "HRULE") {
				$graph_variables["text_format"][$graph_item_id] = str_replace(":", "\:", $graph_variables["text_format"][$graph_item_id]); /* escape colons */
				$graph_variables["value"][$graph_item_id] = str_replace(":", "\:", $graph_variables["value"][$graph_item_id]); /* escape colons */
				/* perform variable substitution; if this does not return a number, rrdtool will FAIL! */
				$substitute = rrd_substitute_host_query_data($graph_variables["value"][$graph_item_id], $graph, $graph_item);
				if (is_numeric($substitute)) {
					$graph_variables["value"][$graph_item_id] = trim($substitute);
				}
				$txt_graph_items .= $graph_item_types{$graph_item["graph_type_id"]} . ":" . $graph_variables["value"][$graph_item_id] . $graph_item_color_code . ":\"" . $graph_variables["text_format"][$graph_item_id] . $hardreturn[$graph_item_id] . "\" ";
			}elseif ($graph_item_types{$graph_item["graph_type_id"]} == "VRULE") {
				$graph_variables["text_format"][$graph_item_id] = str_replace(":", "\:", $graph_variables["text_format"][$graph_item_id]); /* escape colons */

				if (substr_count($graph_item["value"], ":")) {
					$value_array = explode(":", $graph_item["value"]);

					if ($value_array[0] < 0) {
						$value = date("U") - (-3600 * $value_array[0]) - 60 * $value_array[1];
					}else{
						$value = date("U", mktime($value_array[0],$value_array[1],0));
					}
				}else if (is_numeric($graph_item["value"])) {
					$value = $graph_item["value"];
				}

				$txt_graph_items .= $graph_item_types{$graph_item["graph_type_id"]} . ":" . $value . $graph_item_color_code . ":\"" . $graph_variables["text_format"][$graph_item_id] . $hardreturn[$graph_item_id] . "\" ";
			}
		}else{
			$need_rrd_nl = FALSE;
		}

		$i++;

		if (($i < sizeof($graph_items)) && ($need_rrd_nl)) {
			$txt_graph_items .= RRD_NL;
		}
	}
	}

	/* either print out the source or pass the source onto rrdtool to get us a nice PNG */
	if (isset($graph_data_array["print_source"])) {
		print "<PRE>" . read_config_option("path_rrdtool") . " graph $graph_opts$graph_defs$txt_graph_items</PRE>";
	}else{
		if (isset($graph_data_array["export"])) {
			@rrdtool_execute("graph $graph_opts$graph_defs$txt_graph_items", false, RRDTOOL_OUTPUT_NULL);
			return 0;
		}else{
			if (isset($graph_data_array["output_flag"])) {
				$output_flag = $graph_data_array["output_flag"];
			}else{
				$output_flag = RRDTOOL_OUTPUT_GRAPH_DATA;
			}

			return @rrdtool_execute("graph $graph_opts$graph_defs$txt_graph_items", false, $output_flag);
		}
	}
}

/**
 * add a (list of) datasource(s) to an (array of) rrd file(s)
 * @param array $file_array	- array of rrd files
 * @param array $ds_array	- array of datasouce parameters
 * @param bool $debug		- debug mode
 * returns mixed			- success (bool) or error message (array)
 */
function api_rrd_datasource_add($file_array, $ds_array, $debug) {
	require_once(CACTI_BASE_PATH."/lib/rrd.php");
	require(CACTI_BASE_PATH . "/include/data_source/data_source_arrays.php");
	#print_r($ds_array);
	$rrd_struc = array();

	/* iterate all given rrd files */
	foreach($file_array as $file) {
		/* create a DOM object from an rrdtool dump */
		$dom = new domDocument;
		$dom->loadXML(rrdtool_execute("dump $file", false, RRDTOOL_OUTPUT_STDOUT, $rrd_struc, 'UTIL'));
		if (!$dom) {
			$check["err_msg"] = __('Error while parsing the XML of rrdtool dump');
			return $check;
		}

		/* rrdtool dump depends on rrd file version:
		 * version 0001 => RRDTool 1.0.x
		 * version 0003 => RRDTool 1.2.x, 1.3.x, 1.4.x
		 */
		$version = trim($dom->getElementsByTagName('version')->item(0)->nodeValue);

		/* now start XML processing */
		foreach($ds_array as $ds) {
			/* first, append the <DS> strcuture in the rrd header */
			if ($ds['type'] === $data_source_types[DATA_SOURCE_TYPE_COMPUTE]) {
				append_COMPUTE_DS($dom, $version, $ds['name'], $ds['type'], $ds['cdef']);
			}else {
				append_DS($dom, $version, $ds['name'], $ds['type'], $ds['heartbeat'], $ds['min'], $ds['max']);
			}
			/* now work on the <DS> structure as part of the <cdp_prep> tree */
			append_CDP_Prep_DS($dom, $version);
			/* add <V>alues to the <database> tree */
			append_Value($dom);
		}

		if($debug) {
			echo $dom->saveXML();
		}else {
			/* for rrdtool restore, we need a file, so write the XML to disk */
			$xml_file = $file . '.xml';
			$rc = $dom->save($xml_file);
			/* verify, if write was successful */
			if ($rc === false) {
				$check["err_msg"] = __('ERROR while writing XML file: %s', $xml_file);
				return $check;
			}else {
				/* are we allowed to write the rrd file? */
				if (is_writable($file)) {
					/* restore the modified XML to rrd */
					rrdtool_execute("restore -f $xml_file $file", false, RRDTOOL_OUTPUT_STDOUT, $rrd_struc, 'UTIL');
					/* scratch that XML file to avoid filling up the disk */
					unlink($xml_file);
					cacti_log(__("Added datasource(s) to rrd file: %s", $file), false, 'UTIL');
				}else {
					$check["err_msg"] = __('ERROR: RRD file %s not writeable', $file);
					return $check;
				}
			}
		}
	}
	return true;
}

function get_rrd_cfs($local_data_id) {
	global $rrd_cfs;
	require(CACTI_BASE_PATH . "/include/presets/preset_rra_arrays.php");

	$rrdfile = get_data_source_path($local_data_id, TRUE);

	if (!isset($rrd_cfs)) {
		$rrd_cfs = array();
	}else if (array_key_exists($local_data_id, $rrd_cfs)) {
		return $rrd_cfs[$local_data_id];
	}

	$cfs = array();

	$output = rrdtool_execute("info $rrdfile", FALSE, RRDTOOL_OUTPUT_STDOUT);

	/* search for
	 * 		rra[0].cf = "LAST"
	 * or similar
	 */
	if (strlen($output)) {
		$output = explode("\n", $output);

		if (sizeof($output)) {
			foreach($output as $line) {
				if (substr_count($line, ".cf")) {
					$values = explode("=",$line);

					if (!in_array(trim($values[1]), $cfs)) {
						$cfs[] = trim($values[1], '" ');
					}
				}
			}
		}
	}

	$new_cfs = array();

	if (sizeof($cfs)) {
		foreach($cfs as $cf) {
			$new_cfs[] = array_search($cf, $consolidation_functions);
		}
	}

	$rrd_cfs[$local_data_id] = $new_cfs;

	return $new_cfs;
}

function thold_rrd_last($rra)
{
    global $config;
    $last_time_entry = @rrdtool_execute('last ' . trim(get_data_source_path($rra, true)), false, RRDTOOL_OUTPUT_STDOUT);
    return trim($last_time_entry);
}

function rrdtool_function_info($data_source_id) {
	global $config;

	/* Get the path to rrdtool file */
	$data_source_path = get_data_source_path($data_source_id, true);

	/* Execute rrdtool info command */
	$cmd_line = " info " . $data_source_path;
	$output = rrdtool_execute($cmd_line, RRDTOOL_OUTPUT_NULL, RRDTOOL_OUTPUT_STDOUT);
	if (sizeof($output) == 0) {
		return false;
	}

	/* Parse the output */
	$matches = array();
	$rrd_info = array( 'rra' => array(), "ds" => array() );
	$output = explode("\n", $output);
	foreach ($output as $line) {
		$line = trim($line);
		if (preg_match("/^ds\[(\S+)\]\.(\S+) = (\S+)$/", $line, $matches)) {
			$rrd_info["ds"][$matches[1]][$matches[2]] = $matches[3];
		} elseif (preg_match("/^rra\[(\S+)\]\.(\S+)\[(\S+)\]\.(\S+) = (\S+)$/", $line, $matches)) {
			$rrd_info['rra'][$matches[1]][$matches[2]][$matches[3]][$matches[4]] = $matches[5];
		} elseif (preg_match("/^rra\[(\S+)\]\.(\S+) = (\S+)$/", $line, $matches)) {
			$rrd_info['rra'][$matches[1]][$matches[2]] = $matches[3];
		} elseif (preg_match("/^(\S+) = \"(\S+)\"$/", $line, $matches)) {
			$rrd_info[$matches[1]] = $matches[2];
		} elseif (preg_match("/^(\S+) = (\S+)$/", $line, $matches)) {
			$rrd_info[$matches[1]] = $matches[2];
		}
	}
	$output = "";
	$matches = array();

	/* Return parsed values */
	return $rrd_info;

}

function dsstats_obtain_data_source_avgpeak_values($rrdfile, $interval, $pipes)
{
    global $config;
    /* don't attempt to get information if the file does not exist */
    if (file_exists($rrdfile)) {
        /* high speed or snail speed */
        if (read_config_option("dsstats_rrdtool_pipe") == "on") {
            $info = dsstats_rrdtool_execute("info {$rrdfile}", $pipes);
        } else {
            $info = rrdtool_execute("info {$rrdfile}", false, RRDTOOL_OUTPUT_STDOUT);
        }
        /* don't do anything if RRDfile did not return data */
        if ($info != "") {
            $info_array = explode("\n", $info);
            $average = FALSE;
            $max = FALSE;
            $dsnames = array();
            /* figure out whatis in this RRDfile.  Assume CF Uniformity as Cacti does not allow async rrdfiles.
             * also verify the consolidation functions in the RRDfile for average and max calculations.
             */
            if (sizeof($info_array)) {
                foreach ($info_array as $line) {
                    if (substr_count($line, "ds[")) {
                        $parts = explode("]", $line);
                        $parts2 = explode("[", $parts[0]);
                        $dsnames[trim($parts2[1])] = 1;
                    } else {
                        if (substr_count($line, ".cf")) {
                            $parts = explode("=", $line);
                            if (substr_count($parts[1], "AVERAGE")) {
                                $average = TRUE;
                            } elseif (substr_count($parts[1], "MAX")) {
                                $max = TRUE;
                            }
                        } else {
                            if (substr_count($line, "step")) {
                                $parts = explode("=", $line);
                                $poller_interval = trim($parts[1]);
                            }
                        }
                    }
                }
            }
            /* create the command syntax to get data */
            /* assume that an RRDfile has not more than 62 data sources */
            $defs = "abcdefghijklmnopqrstuvwzyz012345789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
            $i = 0;
            $def = "";
            $xport = "";
            $dsvalues = array();
            /* escape the file name if on Windows */
            if ($config["cacti_server_os"] != "unix") {
                $rrdfile = str_replace(":", "\\:", $rrdfile);
            }
            /* setup the export command by parsing throught the internal data source names */
            if (sizeof($dsnames)) {
                foreach ($dsnames as $dsname => $present) {
                    if ($average) {
                        $def .= "DEF:" . $defs[$i] . "=\"" . $rrdfile . "\":" . $dsname . ":AVERAGE ";
                        $xport .= " XPORT:" . $defs[$i];
                        $i++;
                    }
                    if ($max) {
                        $def .= "DEF:" . $defs[$i] . "=\"" . $rrdfile . "\":" . $dsname . ":MAX ";
                        $xport .= " XPORT:" . $defs[$i];
                        $i++;
                    }
                }
            }
            /* change the interval to something RRDtool understands */
            switch ($interval) {
                case "daily":
                    $interval = "day";
                    break;
                case "weekly":
                    $interval = "week";
                    break;
                case "monthly":
                    $interval = "month";
                    break;
                case "yearly":
                    $interval = "year";
                    break;
            }
            /* now execute the xport command */
            $xport_cmd = "xport --start now-1" . $interval . " --end now " . trim($def) . " " . trim($xport) . " --maxrows 10";
            if (read_config_option("dsstats_rrdtool_pipe") == "on") {
                $xport_data = dsstats_rrdtool_execute($xport_cmd, $pipes);
            } else {
                $xport_data = rrdtool_execute($xport_cmd, false, RRDTOOL_OUTPUT_STDOUT);
            }
            /* initialize the array of return values */
            foreach ($dsnames as $dsname => $present) {
                $dsvalues[$dsname]["AVG"] = 0;
                $dsvalues[$dsname]["AVGCNT"] = 0;
                $dsvalues[$dsname]["MAX"] = 0;
            }
            /* process the xport array and return average and peak values */
            if ($xport_data != "") {
                $xport_array = explode("\n", $xport_data);
//.........这里部分代码省略.........

function thold_rrd_last($local_data_id)
{
    $last_time_entry = @rrdtool_execute('last ' . trim(get_data_source_path($local_data_id, true)), false, RRDTOOL_OUTPUT_STDOUT);
    return trim($last_time_entry);
}

    print "    </TR>\n";
    // Time values
    $start = strtotime($date_start);
    $end = strtotime($date_end);
    $start_a = $start - $units * $tspan;
    // Display colors/types
    $disp_a = "{$type_ds}:a#{$col_ds}";
    $disp_pred = "{$type_pred}:predict#{$col_pred}";
    // Must increment unit (current timespan is included)
    $units = $units + 1;
    // For windows users (Thank you Praveen Kumar)
    $ds_name = str_replace(" ", "", $ds_name);
    $ds_var = str_replace(" ", "", $ds_var);
    // Build graph options
    $gr_ops = "--imgformat=PNG --title='{$ds_name}/{$ds_var}' --height={$height} --width={$width} --alt-autoscale-max --slope-mode --start={$start} --end={$end} DEF:a=\"{$ds_path}\":{$ds_var}:AVERAGE:start={$start_a} {$disp_a}:'采集数据' CDEF:predict={$tspan},-{$units},{$win},a,PREDICT {$disp_pred}:'预测值'";
    @rrdtool_execute("graph {$file_abs} {$gr_ops}", true, RRDTOOL_OUTPUT_NULL);
    print "    <TR>\n";
    print "        <TD>\n";
    print '            <IMG src="' . $file_rel . '" alt="">';
    print "        </TD>\n";
    print "    </TR>\n";
    print "<TR class='textHeaderDark' style='color:white;font-size=12px;background-color:#00438C;line-height:120%;'><TD>二维预测算法</TD></TR>";
    $src = $config['url_path'] . "graph_image.php?local_graph_id=45&amp;rra_id=0&amp;graph_height=" . $height . "&amp;graph_width=" . $width . "&amp;title_font_size=10&amp;view_type=tree&amp;graph_start=" . $start . "&amp;graph_end=" . $end;
    print "    <TR>\n";
    print "        <TD>\n";
    print '            <IMG src="' . $src . '">';
    print "        </TD>\n";
    print "    </TR>\n";
    print "</TABLE>\n";
}
?>

//.........这里部分代码省略.........
            $cdef_total_ds = "";
            $cdef_similar_ds = "";
            if (!empty($xport_item["cdef_id"]) && !isset($cdef_cache[$xport_item["cdef_id"]][$xport_item["data_template_rrd_id"]][$cf_id])) {
                $cdef_string = $xport_variables["cdef_cache"][$xport_item["graph_templates_item_id"]];
                /* create cdef string for "total all data sources" if requested */
                if (ereg("ALL_DATA_SOURCES_(NO)?DUPS", $cdef_string)) {
                    $item_count = 0;
                    for ($t = 0; $t < count($xport_items); $t++) {
                        if (ereg("(AREA|STACK|LINE[123])", $graph_item_types[$xport_items[$t]["graph_type_id"]]) && !empty($xport_items[$t]["data_template_rrd_id"])) {
                            /* if the user screws up CF settings, PHP will generate warnings if left unchecked */
                            if (isset($cf_ds_cache[$xport_items[$t]["data_template_rrd_id"]][$cf_id])) {
                                $def_name = generate_graph_def_name(strval($cf_ds_cache[$xport_items[$t]["data_template_rrd_id"]][$cf_id]));
                                $cdef_total_ds .= ($item_count == 0 ? "" : ",") . "TIME," . (time() - $seconds_between_graph_updates) . ",GT,{$def_name},{$def_name},UN,0,{$def_name},IF,IF";
                                /* convert unknowns to '0' first */
                                $item_count++;
                            }
                        }
                    }
                    /* if there is only one item to total, don't even bother with the summation. otherwise
                    			cdef=a,b,c,+,+ is fine. */
                    if ($item_count > 1) {
                        $cdef_total_ds .= str_repeat(",+", $item_count - 2) . ",+";
                    }
                }
                /* create cdef string for "total similar data sources" if requested */
                if (ereg("SIMILAR_DATA_SOURCES_(NO)?DUPS", $cdef_string)) {
                    $sources_seen = array();
                    $item_count = 0;
                    for ($t = 0; $t < count($xport_items); $t++) {
                        if (ereg("(AREA|STACK|LINE[123])", $graph_item_types[$xport_items[$t]["graph_type_id"]]) && !empty($xport_items[$t]["data_template_rrd_id"]) && $xport_item["data_source_name"] == $xport_items[$t]["data_source_name"]) {
                            /* if the user screws up CF settings, PHP will generate warnings if left unchecked */
                            if (isset($cf_ds_cache[$xport_items[$t]["data_template_rrd_id"]][$cf_id]) && !isset($sources_seen[$xport_items[$t]["data_template_rrd_id"]])) {
                                $def_name = generate_graph_def_name(strval($cf_ds_cache[$xport_items[$t]["data_template_rrd_id"]][$cf_id]));
                                $cdef_similar_ds .= ($item_count == 0 ? "" : ",") . "TIME," . (time() - $seconds_between_graph_updates) . ",GT,{$def_name},{$def_name},UN,0,{$def_name},IF,IF";
                                /* convert unknowns to '0' first */
                                $sources_seen[$xport_items[$t]["data_template_rrd_id"]] = 1;
                                $item_count++;
                            }
                        }
                    }
                    /* if there is only one item to total, don't even bother with the summation. otherwise
                    			cdef=a,b,c,+,+ is fine. */
                    if ($item_count > 1) {
                        $cdef_similar_ds .= str_repeat(",+", $item_count - 2) . ",+";
                    }
                }
                $cdef_string = str_replace("CURRENT_DATA_SOURCE", generate_graph_def_name(strval(isset($cf_ds_cache[$xport_item["data_template_rrd_id"]][$cf_id]) ? $cf_ds_cache[$xport_item["data_template_rrd_id"]][$cf_id] : "0")), $cdef_string);
                $cdef_string = str_replace("ALL_DATA_SOURCES_NODUPS", $cdef_total_ds, $cdef_string);
                $cdef_string = str_replace("SIMILAR_DATA_SOURCES_NODUPS", $cdef_similar_ds, $cdef_string);
                /* data source item variables */
                $cdef_string = str_replace("CURRENT_DS_MINIMUM_VALUE", empty($xport_item["rrd_minimum"]) ? "0" : $xport_item["rrd_minimum"], $cdef_string);
                $cdef_string = str_replace("CURRENT_DS_MAXIMUM_VALUE", empty($xport_item["rrd_maximum"]) ? "0" : $xport_item["rrd_maximum"], $cdef_string);
                $cdef_string = str_replace("CURRENT_GRAPH_MINIMUM_VALUE", empty($graph["lower_limit"]) ? "0" : $graph["lower_limit"], $cdef_string);
                $cdef_string = str_replace("CURRENT_GRAPH_MAXIMUM_VALUE", empty($graph["upper_limit"]) ? "0" : $graph["upper_limit"], $cdef_string);
                /* replace query variables in cdefs */
                $cdef_string = rrd_substitute_host_query_data($cdef_string, $graph, $xport_item);
                /* make the initial "virtual" cdef name: 'cdef' + [a,b,c,d...] */
                $cdef_xport_defs .= "CDEF:cdef" . generate_graph_def_name(strval($i)) . "=";
                $cdef_xport_defs .= $cdef_string;
                $cdef_xport_defs .= " \\\n";
                /* the CDEF cache is so we do not create duplicate CDEF's on a graph */
                $cdef_cache[$xport_item["cdef_id"]][$xport_item["data_template_rrd_id"]][$cf_id] = "{$i}";
            }
            /* add the cdef string to the end of the def string */
            $xport_defs .= $cdef_xport_defs;
            /* note the current item_id for easy access */
            $xport_item_id = $xport_item["graph_templates_item_id"];
            /* IF this graph item has a data source... get a DEF name for it, or the cdef if that applies
            		to this graph item */
            if ($xport_item["cdef_id"] == "0") {
                if (isset($cf_ds_cache[$xport_item["data_template_rrd_id"]][$cf_id])) {
                    $data_source_name = generate_graph_def_name(strval($cf_ds_cache[$xport_item["data_template_rrd_id"]][$cf_id]));
                } else {
                    $data_source_name = "";
                }
            } else {
                $data_source_name = "cdef" . generate_graph_def_name(strval($cdef_cache[$xport_item["cdef_id"]][$xport_item["data_template_rrd_id"]][$cf_id]));
            }
            /* +++++++++++++++++++++++ XPORT ITEMS +++++++++++++++++++++++ */
            $need_rrd_nl = TRUE;
            if (ereg("^(AREA|LINE[123]|STACK)\$", $graph_item_types[$xport_item["graph_type_id"]])) {
                $txt_xport_items .= "XPORT:" . $data_source_name . ":" . "\"" . $xport_variables["text_format"][$xport_item_id] . "\"";
            } else {
                $need_rrd_nl = FALSE;
            }
            $i++;
            if ($i < sizeof($xport_items) && $need_rrd_nl) {
                $txt_xport_items .= RRD_NL;
            }
        }
    }
    $output_flag = RRDTOOL_OUTPUT_STDOUT;
    $xport_array = rrdxport2array(rrdtool_execute("xport {$xport_opts}{$xport_defs}{$txt_xport_items}", false, $output_flag, $rrd_struc));
    /* add host and graph information */
    $xport_array["meta"]["title_cache"] = $graph["title_cache"];
    $xport_array["meta"]["vertical_label"] = $graph["vertical_label"];
    $xport_array["meta"]["local_graph_id"] = $local_graph_id;
    $xport_array["meta"]["host_id"] = $graph["host_id"];
    return $xport_array;
}