From: Paul Sadauskas Date: Sat, 20 Jun 2009 22:54:18 +0000 (-0600) Subject: http plugin: Set mutex around curl, so we only perform once at a time X-Git-Tag: collectd-4.8.0~26^2~24 X-Git-Url: https://git.verplant.org/?a=commitdiff_plain;h=6f618e6759257431d5ab266c1676dd53ed9d097a;p=collectd.git http plugin: Set mutex around curl, so we only perform once at a time --- diff --git a/src/http.c b/src/http.c index 06737a3d..d891ab00 100644 --- a/src/http.c +++ b/src/http.c @@ -27,6 +27,10 @@ #include "utils_cache.h" #include "utils_parse_option.h" +#if HAVE_PTHREAD_H +# include +#endif + #include /* @@ -44,18 +48,30 @@ char *user; char *pass; char *credentials; -static int http_init_curl(CURL *curl, char *curl_errbuf) +CURL *curl; +char curl_errbuf[CURL_ERROR_SIZE]; + +static pthread_mutex_t send_lock = PTHREAD_MUTEX_INITIALIZER; + +static int http_init(void) /* {{{ */ { + + curl = curl_easy_init (); + + if (curl == NULL) + { + ERROR ("curl plugin: curl_easy_init failed."); + return (-1); + } + struct curl_slist *headers=NULL; curl_easy_setopt (curl, CURLOPT_USERAGENT, PACKAGE_NAME"/"PACKAGE_VERSION); - headers = curl_slist_append(headers, "Accept: text/csv"); + headers = curl_slist_append(headers, "Accept: text/csv;q=0.8, */*;q=0.2"); headers = curl_slist_append(headers, "Content-Type: text/csv"); curl_easy_setopt (curl, CURLOPT_HTTPHEADER, headers); - curl_easy_setopt (curl, CURLOPT_FORBID_REUSE, 1); - curl_easy_setopt (curl, CURLOPT_ERRORBUFFER, curl_errbuf); curl_easy_setopt (curl, CURLOPT_URL, location); @@ -81,14 +97,9 @@ static int http_init_curl(CURL *curl, char *curl_errbuf) } return (0); -} +} /* }}} */ -static int http_init(void) -{ - return (0); -} - -static int value_list_to_string (char *buffer, int buffer_len, +static int http_value_list_to_string (char *buffer, int buffer_len, /* {{{ */ const data_set_t *ds, const value_list_t *vl, int index) { int offset = 0; @@ -138,9 +149,9 @@ static int value_list_to_string (char *buffer, int buffer_len, sfree (rates); return (0); -} /* int value_list_to_string */ +} /* }}} int http_value_list_to_string */ -static int value_list_to_timestamp (char *buffer, int buffer_len, +static int http_value_list_to_timestamp (char *buffer, int buffer_len, /* {{{ */ const data_set_t *ds, const value_list_t *vl) { int offset = 0; @@ -156,9 +167,9 @@ static int value_list_to_timestamp (char *buffer, int buffer_len, offset = status; return (0); -} /* int value_list_to_timestamp */ +} /* }}} int http_value_list_to_timestamp */ -static int value_list_to_metric_name (char *buffer, int buffer_len, +static int http_value_list_to_metric_name (char *buffer, int buffer_len, /* {{{ */ const data_set_t *ds, const value_list_t *vl) { int offset = 0; @@ -211,9 +222,9 @@ static int value_list_to_metric_name (char *buffer, int buffer_len, } return (offset); -} /* int value_list_to_metric_name */ +} /* }}} int http_value_list_to_metric_name */ -static int http_config (const char *key, const char *value) +static int http_config (const char *key, const char *value) /* {{{ */ { if (strcasecmp ("Location", key) == 0) { @@ -280,20 +291,18 @@ static int http_config (const char *key, const char *value) return (-1); } return (0); -} /* int http_config */ +} /* }}} int http_config */ -static int http_write (const data_set_t *ds, const value_list_t *vl, +static int http_write (const data_set_t *ds, const value_list_t *vl, /* {{{ */ user_data_t __attribute__((unused)) *user_data) { - CURL *curl; - char curl_errbuf[CURL_ERROR_SIZE]; char metric_name[512]; int metric_prefix_len; char value[512]; char timestamp[512]; - char csv_buffer[10240]; + char csv_buffer[1024]; int status; int offset = 0; @@ -304,30 +313,21 @@ static int http_write (const data_set_t *ds, const value_list_t *vl, return -1; } - curl = curl_easy_init (); - if (curl == NULL) - { - ERROR ("curl plugin: curl_easy_init failed."); - return (-1); - } - - http_init_curl(curl, curl_errbuf); - - metric_prefix_len = value_list_to_metric_name (metric_name, + metric_prefix_len = http_value_list_to_metric_name (metric_name, sizeof (metric_name), ds, vl); if (metric_prefix_len == -1) return (-1); - DEBUG ("http plugin: http_write: metric_name = %s;", metric_name); + DEBUG ("http plugin: http_write: metric_name = %s", metric_name); - if (value_list_to_timestamp (timestamp, sizeof (timestamp), ds, vl) != 0) + if (http_value_list_to_timestamp (timestamp, sizeof (timestamp), ds, vl) != 0) return (-1); for (i = 0; i < ds->ds_num; i++) { - if (value_list_to_string (value, sizeof (value), ds, vl, i) != 0) + if (http_value_list_to_string (value, sizeof (value), ds, vl, i) != 0) return (-1); ssnprintf(metric_name + metric_prefix_len, sizeof (metric_name) - metric_prefix_len, @@ -344,6 +344,8 @@ static int http_write (const data_set_t *ds, const value_list_t *vl, printf(csv_buffer); + pthread_mutex_lock (&send_lock); + curl_easy_setopt (curl, CURLOPT_POSTFIELDS, csv_buffer); status = curl_easy_perform (curl); if (status != 0) @@ -353,16 +355,25 @@ static int http_write (const data_set_t *ds, const value_list_t *vl, return (-1); } - curl_easy_cleanup(curl); + pthread_mutex_unlock (&send_lock); return (0); -} /* int http_write */ +} /* }}} int http_write */ -void module_register (void) +static int http_shutdown (void) /* {{{ */ +{ + curl_easy_cleanup(curl); + return (0); +} + +void module_register (void) /* {{{ */ { plugin_register_init("http", http_init); plugin_register_config ("http", http_config, config_keys, config_keys_num); plugin_register_write ("http", http_write, /* user_data = */ NULL); -} /* void module_register */ + plugin_register_shutdown("http", http_shutdown); +} /* }}} void module_register */ + +/* vim: set fdm=marker sw=8 ts=8 tw=78 : */