Autotoolization.

[collection4.git] / src / action_graph.c

diff --git a/src/action_graph.c b/src/action_graph.c
new file mode 100644 (file)
index 0000000..a0f257e
--- /dev/null
+++ b/src/action_graph.c
@@ -0,0 +1,150 @@
+#include <stdlib.h>
+#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 <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>
+
+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 = gl_graph_get_selected ();
+  if (cfg == NULL)
+    OUTPUT_ERROR ("gl_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 = inst_get_rrdargs (cfg, inst, args);
+  if (status != 0)
+  {
+    array_destroy (args);
+    OUTPUT_ERROR ("inst_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 */
+
+/* vim: set sw=2 sts=2 et fdm=marker : */