"show graph json" action: Implement action for exporting graph information as JSON.

diff --git a/src/Makefile.am b/src/Makefile.am
index d51326230a2b52240ca8304dbcdbb355742d807b..e3d85b67cc17caab2f78ed63b29e4e4081cfc5af 100644 (file)
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -19,6 +19,7 @@ collection_fcgi_SOURCES = main.c \
                          action_list_graphs.c action_list_graphs.h \
                          action_search_json.c action_search_json.h \
                          action_show_graph.c action_show_graph.h \
+                         action_show_graph_json.c action_show_graph_json.h \
                          action_show_instance.c action_show_instance.h \
                          common.c common.h \
                          filesystem.c filesystem.h \

diff --git a/src/action_show_graph_json.c b/src/action_show_graph_json.c
new file mode 100644 (file)
index 0000000..a182a62
--- /dev/null
+++ b/src/action_show_graph_json.c
@@ -0,0 +1,122 @@
+/**
+ * collection4 - action_show_graph_json.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 <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include <assert.h>
+
+#include "action_show_graph_json.h"
+#include "common.h"
+#include "graph.h"
+#include "graph_ident.h"
+#include "graph_instance.h"
+#include "graph_list.h"
+#include "utils_cgi.h"
+
+#include <fcgiapp.h>
+#include <fcgi_stdio.h>
+
+struct show_graph_data_s
+{
+  graph_config_t *cfg;
+  _Bool first;
+};
+typedef struct show_graph_data_s show_graph_data_t;
+
+static int show_instance_cb (graph_instance_t *inst, /* {{{ */
+    void *user_data)
+{
+  show_graph_data_t *data = user_data;
+  graph_ident_t *ident;
+  char *ident_json;
+
+  ident = inst_get_selector (inst);
+  if (ident == NULL)
+    return (ENOMEM);
+
+  ident_json = ident_to_json (ident);
+  if (ident_json == NULL)
+  {
+    ident_destroy (ident);
+    return (ENOMEM);
+  }
+
+  if (!data->first)
+    printf (",\n");
+  data->first = 0;
+
+  printf ("    %s", ident_json);
+
+  free (ident_json);
+  ident_destroy (ident);
+  return (0);
+} /* }}} int show_instance_cb */
+
+int action_show_graph_json (void) /* {{{ */
+{
+  show_graph_data_t data;
+  char title[1024];
+  graph_ident_t *ident;
+  char *ident_json;
+
+  memset (&data, 0, sizeof (data));
+  data.first = 1;
+  data.cfg = gl_graph_get_selected ();
+  if (data.cfg == NULL)
+    return (ENOMEM);
+
+  ident = graph_get_selector (data.cfg);
+  if (ident == NULL)
+    return (ENOMEM);
+
+  ident_json = ident_to_json (ident);
+  if (ident_json == NULL)
+  {
+    ident_destroy (ident);
+    return (ENOMEM);
+  }
+
+  printf ("Content-Type: text/plain\n\n");
+
+  memset (title, 0, sizeof (title));
+  graph_get_title (data.cfg, title, sizeof (title));
+  json_escape_buffer (title, sizeof (title));
+
+  printf ("{\n");
+  printf ("  \"title\": \"%s\",\n", title);
+  printf ("  \"selector\": %s,\n", ident_json);
+  printf ("  \"instances\":\n");
+  printf ("  [\n");
+  graph_inst_foreach (data.cfg, show_instance_cb, &data);
+  printf ("\n  ]\n}\n");
+
+  free (ident_json);
+  ident_destroy (ident);
+  return (0);
+} /* }}} int action_show_graph_json */
+
+/* vim: set sw=2 sts=2 et fdm=marker : */

diff --git a/src/action_show_graph_json.h b/src/action_show_graph_json.h
new file mode 100644 (file)
index 0000000..d824185
--- /dev/null
+++ b/src/action_show_graph_json.h
@@ -0,0 +1,30 @@
+/**
+ * collection4 - action_show_graph_json.h
+ * 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>
+ **/
+
+#ifndef ACTION_SHOW_GRAPH_JSON_H
+#define ACTION_SHOW_GRAPH_JSON_H 1
+
+int action_show_graph_json (void);
+
+#endif /* ACTION_SHOW_GRAPH_JSON_H */
+/* vim: set sw=2 sts=2 et fdm=marker : */

diff --git a/src/main.c b/src/main.c
index 5dc526422735559e5f9547ad7069f4e0f85dab73..1132cba80dcda7ed1c666660e1022e53b07f5e92 100644 (file)
--- a/src/main.c
+++ b/src/main.c
@@ -40,6 +40,7 @@
 #include "action_list_graphs.h"
 #include "action_search_json.h"
 #include "action_show_graph.h"
+#include "action_show_graph_json.h"
 #include "action_show_instance.h"
 
 /* Include this last, so the macro magic of <fcgi_stdio.h> doesn't interfere
@@ -62,6 +63,7 @@ static const action_t actions[] =
   { "list_graphs", action_list_graphs },
   { "search_json", action_search_json },
   { "show_graph",  action_show_graph },
+  { "show_graph_json",  action_show_graph_json },
   { "show_instance", action_show_instance },
   { "usage",       action_usage }
 };