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0f8175dd30
Co-authored-by: Markos Fountoulakis <markos.fountoulakis.senior@gmail.com> Co-authored-by: Vladimir Kobal <vlad@prokk.net>
228 lines
7 KiB
C
228 lines
7 KiB
C
// SPDX-License-Identifier: GPL-3.0-or-later
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#include "graphite.h"
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/**
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* Initialize Graphite connector instance
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*
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* @param instance an instance data structure.
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* @return Returns 0 on success, 1 on failure.
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*/
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int init_graphite_instance(struct instance *instance)
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{
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instance->worker = simple_connector_worker;
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struct simple_connector_config *connector_specific_config = callocz(1, sizeof(struct simple_connector_config));
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instance->config.connector_specific_config = (void *)connector_specific_config;
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connector_specific_config->default_port = 2003;
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struct simple_connector_data *connector_specific_data = callocz(1, sizeof(struct simple_connector_data));
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instance->connector_specific_data = connector_specific_data;
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#ifdef ENABLE_HTTPS
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connector_specific_data->flags = NETDATA_SSL_START;
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connector_specific_data->conn = NULL;
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if (instance->config.options & EXPORTING_OPTION_USE_TLS) {
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security_start_ssl(NETDATA_SSL_CONTEXT_EXPORTING);
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}
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#endif
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instance->start_batch_formatting = NULL;
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instance->start_host_formatting = format_host_labels_graphite_plaintext;
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instance->start_chart_formatting = NULL;
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if (EXPORTING_OPTIONS_DATA_SOURCE(instance->config.options) == EXPORTING_SOURCE_DATA_AS_COLLECTED)
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instance->metric_formatting = format_dimension_collected_graphite_plaintext;
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else
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instance->metric_formatting = format_dimension_stored_graphite_plaintext;
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instance->end_chart_formatting = NULL;
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instance->end_host_formatting = flush_host_labels;
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instance->end_batch_formatting = simple_connector_end_batch;
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if (instance->config.type == EXPORTING_CONNECTOR_TYPE_GRAPHITE_HTTP)
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instance->prepare_header = graphite_http_prepare_header;
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else
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instance->prepare_header = NULL;
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instance->check_response = exporting_discard_response;
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instance->buffer = (void *)buffer_create(0);
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if (!instance->buffer) {
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error("EXPORTING: cannot create buffer for graphite exporting connector instance %s", instance->config.name);
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return 1;
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}
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simple_connector_init(instance);
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if (uv_mutex_init(&instance->mutex))
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return 1;
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if (uv_cond_init(&instance->cond_var))
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return 1;
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return 0;
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}
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/**
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* Copy a label value and substitute underscores in place of charachters which can't be used in Graphite output
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*
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* @param dst a destination string.
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* @param src a source string.
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* @param len the maximum number of characters copied.
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*/
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void sanitize_graphite_label_value(char *dst, char *src, size_t len)
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{
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while (*src != '\0' && len) {
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if (isspace(*src) || *src == ';' || *src == '~')
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*dst++ = '_';
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else
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*dst++ = *src;
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src++;
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len--;
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}
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*dst = '\0';
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}
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/**
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* Format host labels for JSON connector
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*
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* @param instance an instance data structure.
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* @param host a data collecting host.
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* @return Always returns 0.
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*/
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int format_host_labels_graphite_plaintext(struct instance *instance, RRDHOST *host)
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{
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if (!instance->labels)
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instance->labels = buffer_create(1024);
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if (unlikely(!sending_labels_configured(instance)))
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return 0;
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rrdhost_check_rdlock(host);
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netdata_rwlock_rdlock(&host->labels.labels_rwlock);
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for (struct label *label = host->labels.head; label; label = label->next) {
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if (!should_send_label(instance, label))
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continue;
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char value[CONFIG_MAX_VALUE + 1];
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sanitize_graphite_label_value(value, label->value, CONFIG_MAX_VALUE);
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if (*value) {
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buffer_strcat(instance->labels, ";");
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buffer_sprintf(instance->labels, "%s=%s", label->key, value);
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}
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}
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netdata_rwlock_unlock(&host->labels.labels_rwlock);
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return 0;
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}
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/**
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* Format dimension using collected data for Graphite connector
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*
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* @param instance an instance data structure.
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* @param rd a dimension.
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* @return Always returns 0.
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*/
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int format_dimension_collected_graphite_plaintext(struct instance *instance, RRDDIM *rd)
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{
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RRDSET *st = rd->rrdset;
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RRDHOST *host = st->rrdhost;
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char chart_name[RRD_ID_LENGTH_MAX + 1];
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exporting_name_copy(
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chart_name,
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(instance->config.options & EXPORTING_OPTION_SEND_NAMES && st->name) ? st->name : st->id,
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RRD_ID_LENGTH_MAX);
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char dimension_name[RRD_ID_LENGTH_MAX + 1];
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exporting_name_copy(
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dimension_name,
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(instance->config.options & EXPORTING_OPTION_SEND_NAMES && rd->name) ? rd->name : rd->id,
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RRD_ID_LENGTH_MAX);
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buffer_sprintf(
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instance->buffer,
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"%s.%s.%s.%s%s%s%s " COLLECTED_NUMBER_FORMAT " %llu\n",
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instance->config.prefix,
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(host == localhost) ? instance->config.hostname : host->hostname,
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chart_name,
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dimension_name,
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(host->tags) ? ";" : "",
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(host->tags) ? host->tags : "",
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(instance->labels) ? buffer_tostring(instance->labels) : "",
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rd->last_collected_value,
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(unsigned long long)rd->last_collected_time.tv_sec);
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return 0;
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}
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/**
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* Format dimension using a calculated value from stored data for Graphite connector
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*
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* @param instance an instance data structure.
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* @param rd a dimension.
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* @return Always returns 0.
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*/
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int format_dimension_stored_graphite_plaintext(struct instance *instance, RRDDIM *rd)
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{
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RRDSET *st = rd->rrdset;
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RRDHOST *host = st->rrdhost;
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char chart_name[RRD_ID_LENGTH_MAX + 1];
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exporting_name_copy(
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chart_name,
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(instance->config.options & EXPORTING_OPTION_SEND_NAMES && st->name) ? st->name : st->id,
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RRD_ID_LENGTH_MAX);
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char dimension_name[RRD_ID_LENGTH_MAX + 1];
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exporting_name_copy(
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dimension_name,
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(instance->config.options & EXPORTING_OPTION_SEND_NAMES && rd->name) ? rd->name : rd->id,
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RRD_ID_LENGTH_MAX);
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time_t last_t;
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calculated_number value = exporting_calculate_value_from_stored_data(instance, rd, &last_t);
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if(isnan(value))
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return 0;
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buffer_sprintf(
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instance->buffer,
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"%s.%s.%s.%s%s%s%s " CALCULATED_NUMBER_FORMAT " %llu\n",
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instance->config.prefix,
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(host == localhost) ? instance->config.hostname : host->hostname,
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chart_name,
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dimension_name,
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(host->tags) ? ";" : "",
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(host->tags) ? host->tags : "",
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(instance->labels) ? buffer_tostring(instance->labels) : "",
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value,
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(unsigned long long)last_t);
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return 0;
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}
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/**
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* Ppepare HTTP header
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*
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* @param instance an instance data structure.
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* @return Returns 0 on success, 1 on failure.
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*/
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void graphite_http_prepare_header(struct instance *instance)
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{
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struct simple_connector_data *simple_connector_data = instance->connector_specific_data;
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buffer_sprintf(
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simple_connector_data->last_buffer->header,
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"POST /api/put HTTP/1.1\r\n"
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"Host: %s\r\n"
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"Content-Type: application/graphite\r\n"
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"Content-Length: %lu\r\n"
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"\r\n",
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instance->config.destination,
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buffer_strlen(simple_connector_data->last_buffer->buffer));
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return;
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}
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