diff options
Diffstat (limited to 'exporting/graphite/graphite.c')
| -rw-r--r-- | exporting/graphite/graphite.c | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/exporting/graphite/graphite.c b/exporting/graphite/graphite.c new file mode 100644 index 0000000..0b33f64 --- /dev/null +++ b/exporting/graphite/graphite.c @@ -0,0 +1,220 @@ +// SPDX-License-Identifier: GPL-3.0-or-later + +#include "graphite.h" + +/** + * Initialize Graphite connector instance + * + * @param instance an instance data structure. + * @return Returns 0 on success, 1 on failure. + */ +int init_graphite_instance(struct instance *instance) +{ + instance->worker = simple_connector_worker; + + struct simple_connector_config *connector_specific_config = callocz(1, sizeof(struct simple_connector_config)); + instance->config.connector_specific_config = (void *)connector_specific_config; + connector_specific_config->default_port = 2003; + + struct simple_connector_data *connector_specific_data = callocz(1, sizeof(struct simple_connector_data)); + instance->connector_specific_data = connector_specific_data; + +#ifdef ENABLE_HTTPS + connector_specific_data->flags = NETDATA_SSL_START; + connector_specific_data->conn = NULL; + if (instance->config.options & EXPORTING_OPTION_USE_TLS) { + security_start_ssl(NETDATA_SSL_CONTEXT_EXPORTING); + } +#endif + + instance->start_batch_formatting = NULL; + instance->start_host_formatting = format_host_labels_graphite_plaintext; + instance->start_chart_formatting = NULL; + + if (EXPORTING_OPTIONS_DATA_SOURCE(instance->config.options) == EXPORTING_SOURCE_DATA_AS_COLLECTED) + instance->metric_formatting = format_dimension_collected_graphite_plaintext; + else + instance->metric_formatting = format_dimension_stored_graphite_plaintext; + + instance->end_chart_formatting = NULL; + instance->variables_formatting = NULL; + instance->end_host_formatting = flush_host_labels; + instance->end_batch_formatting = simple_connector_end_batch; + + if (instance->config.type == EXPORTING_CONNECTOR_TYPE_GRAPHITE_HTTP) + instance->prepare_header = graphite_http_prepare_header; + else + instance->prepare_header = NULL; + + instance->check_response = exporting_discard_response; + + instance->buffer = (void *)buffer_create(0); + if (!instance->buffer) { + error("EXPORTING: cannot create buffer for graphite exporting connector instance %s", instance->config.name); + return 1; + } + + simple_connector_init(instance); + + if (uv_mutex_init(&instance->mutex)) + return 1; + if (uv_cond_init(&instance->cond_var)) + return 1; + + return 0; +} + +/** + * Copy a label value and substitute underscores in place of characters which can't be used in Graphite output + * + * @param dst a destination string. + * @param src a source string. + * @param len the maximum number of characters copied. + */ + +void sanitize_graphite_label_value(char *dst, const char *src, size_t len) +{ + while (*src != '\0' && len) { + if (isspace(*src) || *src == ';' || *src == '~') + *dst++ = '_'; + else + *dst++ = *src; + src++; + len--; + } + *dst = '\0'; +} + +/** + * Format host labels for JSON connector + * + * @param instance an instance data structure. + * @param host a data collecting host. + * @return Always returns 0. + */ + +int format_host_labels_graphite_plaintext(struct instance *instance, RRDHOST *host) +{ + if (!instance->labels_buffer) + instance->labels_buffer = buffer_create(1024); + + if (unlikely(!sending_labels_configured(instance))) + return 0; + + rrdlabels_to_buffer(host->rrdlabels, instance->labels_buffer, ";", "=", "", "", + exporting_labels_filter_callback, instance, + NULL, sanitize_graphite_label_value); + + return 0; +} + +/** + * Format dimension using collected data for Graphite connector + * + * @param instance an instance data structure. + * @param rd a dimension. + * @return Always returns 0. + */ +int format_dimension_collected_graphite_plaintext(struct instance *instance, RRDDIM *rd) +{ + RRDSET *st = rd->rrdset; + RRDHOST *host = st->rrdhost; + + char chart_name[RRD_ID_LENGTH_MAX + 1]; + exporting_name_copy( + chart_name, + (instance->config.options & EXPORTING_OPTION_SEND_NAMES && st->name) ? rrdset_name(st) : rrdset_id(st), + RRD_ID_LENGTH_MAX); + + char dimension_name[RRD_ID_LENGTH_MAX + 1]; + exporting_name_copy( + dimension_name, + (instance->config.options & EXPORTING_OPTION_SEND_NAMES && rd->name) ? rrddim_name(rd) : rrddim_id(rd), + RRD_ID_LENGTH_MAX); + + buffer_sprintf( + instance->buffer, + "%s.%s.%s.%s%s%s%s " COLLECTED_NUMBER_FORMAT " %llu\n", + instance->config.prefix, + (host == localhost) ? instance->config.hostname : rrdhost_hostname(host), + chart_name, + dimension_name, + (host->tags) ? ";" : "", + (host->tags) ? rrdhost_tags(host) : "", + (instance->labels_buffer) ? buffer_tostring(instance->labels_buffer) : "", + rd->last_collected_value, + (unsigned long long)rd->last_collected_time.tv_sec); + + return 0; +} + +/** + * Format dimension using a calculated value from stored data for Graphite connector + * + * @param instance an instance data structure. + * @param rd a dimension. + * @return Always returns 0. + */ +int format_dimension_stored_graphite_plaintext(struct instance *instance, RRDDIM *rd) +{ + RRDSET *st = rd->rrdset; + RRDHOST *host = st->rrdhost; + + char chart_name[RRD_ID_LENGTH_MAX + 1]; + exporting_name_copy( + chart_name, + (instance->config.options & EXPORTING_OPTION_SEND_NAMES && st->name) ? rrdset_name(st) : rrdset_id(st), + RRD_ID_LENGTH_MAX); + + char dimension_name[RRD_ID_LENGTH_MAX + 1]; + exporting_name_copy( + dimension_name, + (instance->config.options & EXPORTING_OPTION_SEND_NAMES && rd->name) ? rrddim_name(rd) : rrddim_id(rd), + RRD_ID_LENGTH_MAX); + + time_t last_t; + NETDATA_DOUBLE value = exporting_calculate_value_from_stored_data(instance, rd, &last_t); + + if(isnan(value)) + return 0; + + buffer_sprintf( + instance->buffer, + "%s.%s.%s.%s%s%s%s " NETDATA_DOUBLE_FORMAT " %llu\n", + instance->config.prefix, + (host == localhost) ? instance->config.hostname : rrdhost_hostname(host), + chart_name, + dimension_name, + (host->tags) ? ";" : "", + (host->tags) ? rrdhost_tags(host) : "", + (instance->labels_buffer) ? buffer_tostring(instance->labels_buffer) : "", + value, + (unsigned long long)last_t); + + return 0; +} + +/** + * Prepare HTTP header + * + * @param instance an instance data structure. + * @return Returns 0 on success, 1 on failure. + */ +void graphite_http_prepare_header(struct instance *instance) +{ + struct simple_connector_data *simple_connector_data = instance->connector_specific_data; + + buffer_sprintf( + simple_connector_data->last_buffer->header, + "POST /api/put HTTP/1.1\r\n" + "Host: %s\r\n" + "%s" + "Content-Type: application/graphite\r\n" + "Content-Length: %lu\r\n" + "\r\n", + instance->config.destination, + simple_connector_data->auth_string ? simple_connector_data->auth_string : "", + (unsigned long int) buffer_strlen(simple_connector_data->last_buffer->buffer)); + + return; +} |