From 2f2744072ab144b8130b2296327fc3382e5f7f80 Mon Sep 17 00:00:00 2001
From: Florian Forster <octo@huhu.verplant.org>
Date: Wed, 15 Dec 2010 07:51:40 +0100
Subject: [PATCH] curl_json plugin: Fix handling of numbers which are returned
 as strings.

Also, the string handling function has been simplified. The obscure and
hardly documented sub-request for incomplete keys feature has been
removed.
---
 src/collectd.conf.pod | 16 ----------------
 src/curl_json.c       | 38 +++++++++++++++-----------------------
 2 files changed, 15 insertions(+), 39 deletions(-)

diff --git a/src/collectd.conf.pod b/src/collectd.conf.pod
index 5d10b24a..7579664b 100644
--- a/src/collectd.conf.pod
+++ b/src/collectd.conf.pod
@@ -735,22 +735,6 @@ runtime statistics module of CouchDB
     </URL>
   </Plugin>
 
-Another CouchDB example:
-The following example will collect the status values from each database:
-
-  <URL "http://localhost:5984/_all_dbs">
-    Instance "dbs"
-    <Key "*/doc_count">
-      Type "gauge"
-    </Key>
-    <Key "*/doc_del_count">
-      Type "counter"
-    </Key>
-    <Key "*/disk_size">
-      Type "bytes"
-    </Key>
-  </URL>
-
 In the B<Plugin> block, there may be one or more B<URL> blocks, each defining
 a URL to be fetched via HTTP (using libcurl) and one or more B<Key> blocks.
 The B<Key> string argument must be in a path format, which is used to collect a
diff --git a/src/curl_json.c b/src/curl_json.c
index f6bc512d..442cfcf9 100644
--- a/src/curl_json.c
+++ b/src/curl_json.c
@@ -190,34 +190,26 @@ static int cj_cb_string (void *ctx, const unsigned char *val,
                            unsigned int len)
 {
   cj_t *db = (cj_t *)ctx;
-  c_avl_tree_t *tree;
-  char *ptr;
-
-  if (db->depth != 1) /* e.g. _all_dbs */
-    return (CJ_CB_CONTINUE);
+  char str[len + 1];
 
-  cj_cb_map_key (ctx, val, len); /* same logic */
+  /* Create a null-terminated version of the string. */
+  memcpy (str, val, len);
+  str[len] = 0;
 
-  tree = db->state[db->depth].tree;
+  /* No configuration for this string -> simply return. */
+  if (db->state[db->depth].key == NULL)
+    return (CJ_CB_CONTINUE);
 
-  if ((tree != NULL) && (ptr = rindex (db->url, '/')))
+  if (!CJ_IS_KEY (db->state[db->depth].key))
   {
-    char url[PATH_MAX];
-    CURL *curl;
-
-    /* url =~ s,[^/]+$,$name, */
-    len = (ptr - db->url) + 1;
-    ptr = url;
-    sstrncpy (ptr, db->url, sizeof (url));
-    sstrncpy (ptr + len, db->state[db->depth].name, sizeof (url) - len);
-
-    curl = curl_easy_duphandle (db->curl);
-    curl_easy_setopt (curl, CURLOPT_URL, url);
-    cj_curl_perform (db, curl);
-    curl_easy_cleanup (curl);
+    NOTICE ("curl_json plugin: Found string \"%s\", but the configuration "
+        "expects a map here.", str);
+    return (CJ_CB_CONTINUE);
   }
-  return (CJ_CB_CONTINUE);
-}
+
+  /* Handle the string as if it was a number. */
+  return (cj_cb_number (ctx, (const char *) val, len));
+} /* int cj_cb_string */
 
 static int cj_cb_start (void *ctx)
 {
-- 
2.30.2