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-rw-r--r--exporting/graphite/graphite.c220
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;
+}