2 * collection4 - action_list_graphs_json.c
3 * Copyright (C) 2010,2011 Florian octo Forster
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2.1 of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301 USA
21 * Florian octo Forster <ff at octo.it>
29 #include "action_list_graphs_json.h"
32 #include "graph_list.h"
33 #include "utils_cgi.h"
36 #include <fcgi_stdio.h>
38 static void write_callback (__attribute__((unused)) void *ctx, /* {{{ */
39 const char *str, unsigned int len)
41 fwrite ((void *) str, /* size = */ len, /* nmemb = */ 1, stdout);
42 } /* }}} void write_callback */
44 static int print_one_graph (graph_config_t *cfg, /* {{{ */
49 graph_ident_t *selector;
51 yajl_gen handler = user_data;
53 num_instances = graph_num_instances (cfg);
54 if (num_instances < 1)
57 selector = graph_get_selector (cfg);
60 /* TODO: Print error. */
64 yajl_gen_map_open (handler);
66 memset (title, 0, sizeof (title));
67 graph_get_title (cfg, title, sizeof (title));
69 yajl_gen_string (handler,
70 (unsigned char *) "title",
71 (unsigned int) strlen ("title"));
72 yajl_gen_string (handler,
73 (unsigned char *) title,
74 (unsigned int) strlen (title));
76 yajl_gen_string (handler,
77 (unsigned char *) "select",
78 (unsigned int) strlen ("select"));
79 ident_to_json (selector, handler);
81 yajl_gen_string (handler,
82 (unsigned char *) "num_instances",
83 (unsigned int) strlen ("num_instances"));
84 yajl_gen_integer (handler, (long int) num_instances);
86 yajl_gen_map_close (handler);
88 ident_destroy (selector);
91 } /* }}} int print_one_graph */
93 static int print_all_graphs (yajl_gen handler) /* {{{ */
96 _Bool include_dynamic = 0;
98 dynamic = param ("dynamic");
100 && (strcmp ("true", dynamic) == 0))
103 yajl_gen_array_open (handler);
105 gl_graph_get_all (include_dynamic, print_one_graph,
106 /* user_data = */ handler);
108 yajl_gen_array_close (handler);
111 } /* }}} int print_all_graphs */
113 int action_list_graphs_json (void) /* {{{ */
115 yajl_gen_config handler_config;
119 char time_buffer[128];
122 memset (&handler_config, 0, sizeof (handler_config));
123 handler_config.beautify = 1;
124 handler_config.indentString = " ";
126 handler = yajl_gen_alloc2 (write_callback,
128 /* alloc functions = */ NULL,
129 /* context = */ NULL);
133 printf ("Content-Type: application/json\n");
136 status = time_to_rfc1123 (now + 300, time_buffer, sizeof (time_buffer));
138 printf ("Expires: %s\n"
139 "Cache-Control: public\n",
143 print_all_graphs (handler);
145 yajl_gen_free (handler);
148 } /* }}} int action_list_graphs_json */
150 /* vim: set sw=2 sts=2 et fdm=marker : */