X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=action_graph.c;h=5771e17676394f07e9d5b1d71ac8fa030e16201f;hb=765bbe76d57b127ca2e72e40af3e8123aeeb217c;hp=afad4888eebb65726b58dd1a3a5cfe8e43ea62d9;hpb=7e8bef2ff6fcec4812a6075cd7e690d9b13bec0d;p=collection4.git

diff --git a/action_graph.c b/action_graph.c
index afad488..5771e17 100644
--- a/action_graph.c
+++ b/action_graph.c
@@ -2,18 +2,163 @@
 #include <stdio.h>
 #include <string.h>
 #include <errno.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include <dirent.h> /* for PATH_MAX */
+#include <assert.h>
+#include <math.h>
 
-#include <fcgiapp.h>
-#include <fcgi_stdio.h>
+#include <rrd.h>
 
+#include "common.h"
 #include "action_graph.h"
 #include "graph_list.h"
 #include "utils_params.h"
+#include "utils_array.h"
+
+#include <fcgiapp.h>
+#include <fcgi_stdio.h>
 
-int action_graph (void)
+struct data_source_s
 {
-  printf ("Content-Type: text/plain\n\n"
-      "Hello, this is %s\n", __func__);
+};
+typedef struct data_source_s data_source_t;
+
+struct graph_def_s
+{
+  data_source_t *data_sources;
+  size_t data_sources_num;
+
+  _Bool stack;
+
+  int def_num;
+};
+typedef struct graph_def_s graph_def_t;
+
+static void emulate_graph (int argc, char **argv) /* {{{ */
+{
+  int i;
+
+  printf ("rrdtool \\\n");
+  for (i = 0; i < argc; i++)
+  {
+    if (i < (argc - 1))
+      printf ("  \"%s\" \\\n", argv[i]);
+    else
+      printf ("  \"%s\"\n", argv[i]);
+  }
+} /* }}} void emulate_graph */
+
+static int ag_info_print (rrd_info_t *info) /* {{{ */
+{
+  if (info->type == RD_I_VAL)
+    printf ("[info] %s = %g;\n", info->key, info->value.u_val);
+  else if (info->type == RD_I_CNT)
+    printf ("[info] %s = %lu;\n", info->key, info->value.u_cnt);
+  else if (info->type == RD_I_STR)
+    printf ("[info] %s = %s;\n", info->key, info->value.u_str);
+  else if (info->type == RD_I_INT)
+    printf ("[info] %s = %i;\n", info->key, info->value.u_int);
+  else if (info->type == RD_I_BLO)
+    printf ("[info] %s = [blob, %lu bytes];\n", info->key, info->value.u_blo.size);
+  else
+    printf ("[info] %s = [unknown type %#x];\n", info->key, info->type);
+
+  return (0);
+} /* }}} int ag_info_print */
+
+static int output_graph (rrd_info_t *info) /* {{{ */
+{
+  rrd_info_t *img;
+
+  for (img = info; img != NULL; img = img->next)
+    if ((strcmp ("image", img->key) == 0)
+        && (img->type == RD_I_BLO))
+      break;
+
+  if (img == NULL)
+    return (ENOENT);
+
+  printf ("Content-Type: image/png\n"
+      "Content-Length: %lu\n"
+      "\n",
+      img->value.u_blo.size);
+  fwrite (img->value.u_blo.ptr, img->value.u_blo.size,
+      /* nmemb = */ 1, stdout);
+
+  return (0);
+} /* }}} int output_graph */
+
+#define OUTPUT_ERROR(...) do {             \
+  printf ("Content-Type: text/plain\n\n"); \
+  printf (__VA_ARGS__);                    \
+  return (0);                              \
+} while (0)
+
+int action_graph (void) /* {{{ */
+{
+  str_array_t *args;
+  graph_config_t *cfg;
+  graph_instance_t *inst;
+  rrd_info_t *info;
+  int status;
+
+  cfg = graph_get_selected ();
+  if (cfg == NULL)
+    OUTPUT_ERROR ("graph_get_selected () failed.\n");
+
+  inst = inst_get_selected (cfg);
+  if (inst == NULL)
+    OUTPUT_ERROR ("inst_get_selected (%p) failed.\n", (void *) cfg);
+
+  args = array_create ();
+  if (args == NULL)
+    return (ENOMEM);
+
+  array_append (args, "graph");
+  array_append (args, "-");
+  array_append (args, "--imgformat");
+  array_append (args, "PNG");
+
+  status = gl_instance_get_rrdargs (cfg, inst, args);
+  if (status != 0)
+  {
+    array_destroy (args);
+    OUTPUT_ERROR ("gl_instance_get_rrdargs failed with status %i.\n", status);
+  }
+
+  rrd_clear_error ();
+  info = rrd_graph_v (array_argc (args), array_argv (args));
+  if ((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));
+  }
+  else
+  {
+    int status;
+
+    status = output_graph (info);
+    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)
+      {
+        ag_info_print (ptr);
+      }
+    }
+  }
+
+  if (info != NULL)
+    rrd_info_free (info);
+
+  array_destroy (args);
+  args = NULL;
 
   return (0);
 } /* }}} int action_graph */