/**
* collectd - src/curl_json.c
* Copyright (C) 2009 Doug MacEachern
- * Copyright (C) 2006-2010 Florian octo Forster
+ * Copyright (C) 2006-2011 Florian octo Forster
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
*
* Authors:
* Doug MacEachern <dougm at hyperic.com>
- * Florian octo Forster <octo at verplant.org>
+ * Florian octo Forster <octo at collectd.org>
**/
#include "collectd.h"
#include "plugin.h"
#include "configfile.h"
#include "utils_avltree.h"
+#include "utils_complain.h"
#include <curl/curl.h>
#include <yajl/yajl_parse.h>
+#if HAVE_YAJL_YAJL_VERSION_H
+# include <yajl/yajl_version.h>
+#endif
+
+#if defined(YAJL_MAJOR) && (YAJL_MAJOR > 1)
+# define HAVE_YAJL_V2 1
+#endif
#define CJ_DEFAULT_HOST "localhost"
#define CJ_KEY_MAGIC 0x43484b59UL /* CHKY */
typedef struct cj_key_s cj_key_t;
struct cj_key_s /* {{{ */
{
+ unsigned long magic;
char *path;
char *type;
char *instance;
- unsigned long magic;
};
/* }}} */
_Bool verify_peer;
_Bool verify_host;
char *cacert;
+ struct curl_slist *headers;
+ char *post_body;
CURL *curl;
char curl_errbuf[CURL_ERROR_SIZE];
};
typedef struct cj_s cj_t; /* }}} */
+#if HAVE_YAJL_V2
+typedef size_t yajl_len_t;
+#else
+typedef unsigned int yajl_len_t;
+#endif
+
static int cj_read (user_data_t *ud);
static int cj_curl_perform (cj_t *db, CURL *curl);
static void cj_submit (cj_t *db, cj_key_t *key, value_t *value);
return (0);
status = yajl_parse(db->yajl, (unsigned char *)buf, len);
- if ((status != yajl_status_ok)
- && (status != yajl_status_insufficient_data))
+ if (status == yajl_status_ok)
+ return (len);
+#if !HAVE_YAJL_V2
+ else if (status == yajl_status_insufficient_data)
+ return (len);
+#endif
+
+ if (status != yajl_status_ok)
{
unsigned char *msg =
yajl_get_error(db->yajl, /* verbose = */ 1,
ds = plugin_get_ds (key->type);
if (ds == NULL)
- return -1; /* let plugin_write do the complaining */
- else
- return ds->ds[0].type; /* XXX support ds->ds_len > 1 */
+ {
+ static char type[DATA_MAX_NAME_LEN] = "!!!invalid!!!";
+
+ assert (key->type != NULL);
+ if (strcmp (type, key->type) != 0)
+ {
+ ERROR ("curl_json plugin: Unable to look up DS type \"%s\".",
+ key->type);
+ sstrncpy (type, key->type, sizeof (type));
+ }
+
+ return -1;
+ }
+ else if (ds->ds_num > 1)
+ {
+ static c_complain_t complaint = C_COMPLAIN_INIT_STATIC;
+
+ c_complain_once (LOG_WARNING, &complaint,
+ "curl_json plugin: The type \"%s\" has more than one data source. "
+ "This is currently not supported. I will return the type of the "
+ "first data source, but this will likely lead to problems later on.",
+ key->type);
+ }
+
+ return ds->ds[0].type;
}
/* yajl callbacks */
/* "number" may not be null terminated, so copy it into a buffer before
* parsing. */
static int cj_cb_number (void *ctx,
- const char *number, unsigned int number_len)
+ const char *number, yajl_len_t number_len)
{
char buffer[number_len + 1];
} /* int cj_cb_number */
static int cj_cb_map_key (void *ctx, const unsigned char *val,
- unsigned int len)
+ yajl_len_t len)
{
cj_t *db = (cj_t *)ctx;
c_avl_tree_t *tree;
}
static int cj_cb_string (void *ctx, const unsigned char *val,
- unsigned int len)
+ yajl_len_t len)
{
cj_t *db = (cj_t *)ctx;
char str[len + 1];
static int cj_cb_end_array (void * ctx)
{
- return cj_cb_start (ctx);
+ return cj_cb_end (ctx);
}
static yajl_callbacks ycallbacks = {
sfree (db->pass);
sfree (db->credentials);
sfree (db->cacert);
+ sfree (db->post_body);
+ curl_slist_free_all (db->headers);
sfree (db);
} /* }}} void cj_free */
return c_avl_create ((int (*) (const void *, const void *)) strcmp);
}
+static int cj_config_append_string (const char *name, struct curl_slist **dest, /* {{{ */
+ oconfig_item_t *ci)
+{
+ if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
+ {
+ WARNING ("curl_json plugin: `%s' needs exactly one string argument.", name);
+ return (-1);
+ }
+
+ *dest = curl_slist_append(*dest, ci->values[0].value.string);
+ if (*dest == NULL)
+ return (-1);
+
+ return (0);
+} /* }}} int cj_config_append_string */
+
static int cj_config_add_key (cj_t *db, /* {{{ */
oconfig_item_t *ci)
{
len = ptr-name;
if (len == 0)
break;
+ len = COUCH_MIN(len, sizeof (ent)-1);
sstrncpy (ent, name, len+1);
if (c_avl_get (tree, ent, (void *) &value) != 0)
return (-1);
}
+ curl_easy_setopt (db->curl, CURLOPT_NOSIGNAL, 1L);
curl_easy_setopt (db->curl, CURLOPT_WRITEFUNCTION, cj_curl_callback);
curl_easy_setopt (db->curl, CURLOPT_WRITEDATA, db);
curl_easy_setopt (db->curl, CURLOPT_USERAGENT,
curl_easy_setopt (db->curl, CURLOPT_USERPWD, db->credentials);
}
- curl_easy_setopt (db->curl, CURLOPT_SSL_VERIFYPEER, (int) db->verify_peer);
+ curl_easy_setopt (db->curl, CURLOPT_SSL_VERIFYPEER, (long) db->verify_peer);
curl_easy_setopt (db->curl, CURLOPT_SSL_VERIFYHOST,
- (int) (db->verify_host ? 2 : 0));
+ db->verify_host ? 2L : 0L);
if (db->cacert != NULL)
curl_easy_setopt (db->curl, CURLOPT_CAINFO, db->cacert);
+ if (db->headers != NULL)
+ curl_easy_setopt (db->curl, CURLOPT_HTTPHEADER, db->headers);
+ if (db->post_body != NULL)
+ curl_easy_setopt (db->curl, CURLOPT_POSTFIELDS, db->post_body);
return (0);
} /* }}} int cj_init_curl */
status = cf_util_get_boolean (child, &db->verify_host);
else if (strcasecmp ("CACert", child->key) == 0)
status = cf_util_get_string (child, &db->cacert);
+ else if (strcasecmp ("Header", child->key) == 0)
+ status = cj_config_append_string ("Header", &db->headers, child);
+ else if (strcasecmp ("Post", child->key) == 0)
+ status = cf_util_get_string (child, &db->post_body);
else if (strcasecmp ("Key", child->key) == 0)
status = cj_config_add_key (db, child);
else
host = db->host;
if (key->instance == NULL)
- ssnprintf (vl.type_instance, sizeof (vl.type_instance), "%s-%s",
- db->state[db->depth-1].name, db->state[db->depth].name);
+ {
+ if ((db->depth == 0) || (strcmp ("", db->state[db->depth-1].name) == 0))
+ sstrncpy (vl.type_instance, db->state[db->depth].name, sizeof (vl.type_instance));
+ else
+ ssnprintf (vl.type_instance, sizeof (vl.type_instance), "%s-%s",
+ db->state[db->depth-1].name, db->state[db->depth].name);
+ }
else
sstrncpy (vl.type_instance, key->instance, sizeof (vl.type_instance));
char *url;
yajl_handle yprev = db->yajl;
- db->yajl = yajl_alloc (&ycallbacks, NULL, NULL, (void *)db);
+ db->yajl = yajl_alloc (&ycallbacks,
+#if HAVE_YAJL_V2
+ /* alloc funcs = */ NULL,
+#else
+ /* alloc funcs = */ NULL, NULL,
+#endif
+ /* context = */ (void *)db);
if (db->yajl == NULL)
{
ERROR ("curl_json plugin: yajl_alloc failed.");
return (-1);
}
+ url = NULL;
+ curl_easy_getinfo(curl, CURLINFO_EFFECTIVE_URL, &url);
+
status = curl_easy_perform (curl);
- if (status != 0)
+ if (status != CURLE_OK)
{
ERROR ("curl_json plugin: curl_easy_perform failed with status %i: %s (%s)",
- status, db->curl_errbuf, url);
+ status, db->curl_errbuf, (url != NULL) ? url : "<null>");
yajl_free (db->yajl);
db->yajl = yprev;
return (-1);
}
- curl_easy_getinfo(curl, CURLINFO_EFFECTIVE_URL, &url);
curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &rc);
/* The response code is zero if a non-HTTP transport was used. */
return (-1);
}
- status = yajl_parse_complete (db->yajl);
+#if HAVE_YAJL_V2
+ status = yajl_complete_parse(db->yajl);
+#else
+ status = yajl_parse_complete(db->yajl);
+#endif
if (status != yajl_status_ok)
{
unsigned char *errmsg;
return cj_curl_perform (db, db->curl);
} /* }}} int cj_read */
+static int cj_init (void) /* {{{ */
+{
+ /* Call this while collectd is still single-threaded to avoid
+ * initialization issues in libgcrypt. */
+ curl_global_init (CURL_GLOBAL_SSL);
+ return (0);
+} /* }}} int cj_init */
+
void module_register (void)
{
plugin_register_complex_config ("curl_json", cj_config);
+ plugin_register_init ("curl_json", cj_init);
} /* void module_register */
/* vim: set sw=2 sts=2 et fdm=marker : */
projects / collectd.git / blobdiff