+/**
+ * collection4 - action_graph.c
+ * Copyright (C) 2010 Florian octo Forster
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA
+ *
+ * Authors:
+ * Florian octo Forster <ff at octo.it>
+ **/
+
+#include "config.h"
+
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "common.h"
#include "action_graph.h"
+#include "graph.h"
+#include "graph_instance.h"
#include "graph_list.h"
-#include "utils_params.h"
+#include "utils_cgi.h"
#include "utils_array.h"
#include <fcgiapp.h>
#include <fcgi_stdio.h>
+struct graph_data_s
+{
+ rrd_args_t *args;
+ rrd_info_t *info;
+ time_t mtime;
+ time_t expires;
+ long now;
+ long begin;
+ long end;
+};
+typedef struct graph_data_s graph_data_t;
+
static void emulate_graph (int argc, char **argv) /* {{{ */
{
int i;
return (0);
} /* }}} int ag_info_print */
-static int output_graph (rrd_info_t *info) /* {{{ */
+static int output_graph (graph_data_t *data) /* {{{ */
{
rrd_info_t *img;
+ char time_buffer[256];
+ time_t expires;
+ int status;
- for (img = info; img != NULL; img = img->next)
+ for (img = data->info; img != NULL; img = img->next)
if ((strcmp ("image", img->key) == 0)
&& (img->type == RD_I_BLO))
break;
return (ENOENT);
printf ("Content-Type: image/png\n"
- "Content-Length: %lu\n"
- "\n",
+ "Content-Length: %lu\n",
img->value.u_blo.size);
+ if (data->mtime > 0)
+ {
+ int status;
+
+ status = time_to_rfc1123 (data->mtime, time_buffer, sizeof (time_buffer));
+ if (status == 0)
+ printf ("Last-Modified: %s\n", time_buffer);
+ }
+
+ /* Print Expires header. */
+ if (data->end >= data->now)
+ {
+ /* The end of the timespan can be seen. */
+ long secs_per_pixel;
+
+ /* FIXME: Handle graphs with width != 400. */
+ secs_per_pixel = (data->end - data->begin) / 400;
+
+ expires = (time_t) (data->now + secs_per_pixel);
+ }
+ else /* if (data->end < data->now) */
+ {
+ expires = (time_t) (data->now + 86400);
+ }
+ status = time_to_rfc1123 (expires, time_buffer, sizeof (time_buffer));
+ if (status == 0)
+ printf ("Expires: %s\n", time_buffer);
+
+ printf ("X-Generator: "PACKAGE_STRING"\n");
+ printf ("\n");
+
fwrite (img->value.u_blo.ptr, img->value.u_blo.size,
/* nmemb = */ 1, stdout);
int action_graph (void) /* {{{ */
{
- str_array_t *args;
+ graph_data_t data;
graph_config_t *cfg;
graph_instance_t *inst;
- rrd_info_t *info;
int status;
+ int argc;
+ char **argv;
+
cfg = gl_graph_get_selected ();
if (cfg == NULL)
OUTPUT_ERROR ("gl_graph_get_selected () failed.\n");
if (inst == NULL)
OUTPUT_ERROR ("inst_get_selected (%p) failed.\n", (void *) cfg);
- args = array_create ();
- if (args == NULL)
+ data.args = ra_create ();
+ if (data.args == NULL)
return (ENOMEM);
- array_append (args, "graph");
- array_append (args, "-");
- array_append (args, "--imgformat");
- array_append (args, "PNG");
+ array_append (data.args->options, "graph");
+ array_append (data.args->options, "-");
+ array_append (data.args->options, "--imgformat");
+ array_append (data.args->options, "PNG");
- status = inst_get_rrdargs (cfg, inst, args);
+ status = get_time_args (&data.begin, &data.end, &data.now);
+ if (status == 0)
+ {
+ array_append (data.args->options, "-s");
+ array_append_format (data.args->options, "%li", data.begin);
+ array_append (data.args->options, "-e");
+ array_append_format (data.args->options, "%li", data.end);
+ }
+
+ status = inst_get_rrdargs (cfg, inst, data.args);
if (status != 0)
{
- array_destroy (args);
+ ra_destroy (data.args);
OUTPUT_ERROR ("inst_get_rrdargs failed with status %i.\n", status);
}
+ argc = ra_argc (data.args);
+ argv = ra_argv (data.args);
+ if ((argc < 0) || (argv == NULL))
+ {
+ ra_destroy (data.args);
+ return (-1);
+ }
+
rrd_clear_error ();
- info = rrd_graph_v (array_argc (args), array_argv (args));
- if ((info == NULL) || rrd_test_error ())
+ data.info = rrd_graph_v (argc, argv);
+ if ((data.info == NULL) || rrd_test_error ())
{
printf ("Content-Type: text/plain\n\n");
printf ("rrd_graph_v failed: %s\n", rrd_get_error ());
- emulate_graph (array_argc (args), array_argv (args));
+ emulate_graph (argc, argv);
}
else
{
int status;
- status = output_graph (info);
+ data.mtime = inst_get_mtime (inst);
+
+ status = output_graph (&data);
if (status != 0)
{
rrd_info_t *ptr;
printf ("Content-Type: text/plain\n\n");
printf ("output_graph failed. Maybe the \"image\" info was not found?\n\n");
- for (ptr = info; ptr != NULL; ptr = ptr->next)
+ for (ptr = data.info; ptr != NULL; ptr = ptr->next)
{
ag_info_print (ptr);
}
}
}
- if (info != NULL)
- rrd_info_free (info);
+ if (data.info != NULL)
+ rrd_info_free (data.info);
- array_destroy (args);
- args = NULL;
+ ra_argv_free (argv);
+ ra_destroy (data.args);
+ data.args = NULL;
return (0);
} /* }}} int action_graph */
projects / collection4.git / blobdiff