summaryrefslogtreecommitdiffstats
path: root/exporting/json
diff options
context:
space:
mode:
Diffstat (limited to 'exporting/json')
-rw-r--r--exporting/json/Makefile.am4
-rw-r--r--exporting/json/README.md35
-rw-r--r--exporting/json/json.c350
-rw-r--r--exporting/json/json.h21
4 files changed, 410 insertions, 0 deletions
diff --git a/exporting/json/Makefile.am b/exporting/json/Makefile.am
new file mode 100644
index 0000000..babdcf0
--- /dev/null
+++ b/exporting/json/Makefile.am
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
diff --git a/exporting/json/README.md b/exporting/json/README.md
new file mode 100644
index 0000000..d129ffb
--- /dev/null
+++ b/exporting/json/README.md
@@ -0,0 +1,35 @@
+<!--
+title: "Export metrics to JSON document databases"
+description: "Archive your Agent's metrics to a JSON document database for long-term storage, further analysis, or correlation with data from other sources."
+custom_edit_url: https://github.com/netdata/netdata/edit/master/exporting/json/README.md
+sidebar_label: JSON Document Databases
+-->
+
+# Export metrics to JSON document databases
+
+You can use the JSON connector for the [exporting engine](/exporting/README.md) to archive your agent's metrics to JSON
+document databases for long-term storage, further analysis, or correlation with data from other sources.
+
+## Configuration
+
+To enable data exporting to a JSON document database, run `./edit-config exporting.conf` in the Netdata configuration
+directory and set the following options:
+
+```conf
+[json:my_json_instance]
+ enabled = yes
+ destination = localhost:5448
+```
+
+Add `:http` or `:https` modifiers to the connector type if you need to use other than a plaintext protocol. For example: `json:http:my_json_instance`,
+`json:https:my_json_instance`. You can set basic HTTP authentication credentials using
+
+```conf
+ username = my_username
+ password = my_password
+```
+
+The JSON connector is further configurable using additional settings. See the [exporting reference
+doc](/exporting/README.md#options) for details.
+
+
diff --git a/exporting/json/json.c b/exporting/json/json.c
new file mode 100644
index 0000000..dd53f6f
--- /dev/null
+++ b/exporting/json/json.c
@@ -0,0 +1,350 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "json.h"
+
+/**
+ * Initialize JSON connector instance
+ *
+ * @param instance an instance data structure.
+ * @return Returns 0 on success, 1 on failure.
+ */
+int init_json_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 = 5448;
+
+ struct simple_connector_data *connector_specific_data = callocz(1, sizeof(struct simple_connector_data));
+ instance->connector_specific_data = connector_specific_data;
+
+ instance->start_batch_formatting = NULL;
+ instance->start_host_formatting = format_host_labels_json_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_json_plaintext;
+ else
+ instance->metric_formatting = format_dimension_stored_json_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;
+
+ 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 json 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;
+}
+
+/**
+ * Initialize JSON connector instance for HTTP protocol
+ *
+ * @param instance an instance data structure.
+ * @return Returns 0 on success, 1 on failure.
+ */
+int init_json_http_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 = 5448;
+
+ 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 = open_batch_json_http;
+ instance->start_host_formatting = format_host_labels_json_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_json_plaintext;
+ else
+ instance->metric_formatting = format_dimension_stored_json_plaintext;
+
+ instance->end_chart_formatting = NULL;
+ instance->variables_formatting = NULL;
+ instance->end_host_formatting = flush_host_labels;
+ instance->end_batch_formatting = close_batch_json_http;
+
+ instance->prepare_header = json_http_prepare_header;
+
+ instance->check_response = exporting_discard_response;
+
+ instance->buffer = (void *)buffer_create(0);
+
+ simple_connector_init(instance);
+
+ if (uv_mutex_init(&instance->mutex))
+ return 1;
+ if (uv_cond_init(&instance->cond_var))
+ return 1;
+
+ return 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_json_plaintext(struct instance *instance, RRDHOST *host)
+{
+ if (!instance->labels_buffer)
+ instance->labels_buffer = buffer_create(1024);
+
+ if (unlikely(!sending_labels_configured(instance)))
+ return 0;
+
+ buffer_strcat(instance->labels_buffer, "\"labels\":{");
+ rrdlabels_to_buffer(host->rrdlabels, instance->labels_buffer, "", ":", "\"", ",",
+ exporting_labels_filter_callback, instance,
+ NULL, sanitize_json_string);
+ buffer_strcat(instance->labels_buffer, "},");
+
+ return 0;
+}
+
+/**
+ * Format dimension using collected data for JSON connector
+ *
+ * @param instance an instance data structure.
+ * @param rd a dimension.
+ * @return Always returns 0.
+ */
+int format_dimension_collected_json_plaintext(struct instance *instance, RRDDIM *rd)
+{
+ RRDSET *st = rd->rrdset;
+ RRDHOST *host = st->rrdhost;
+
+ const char *tags_pre = "", *tags_post = "", *tags = rrdhost_tags(host);
+ if (!tags)
+ tags = "";
+
+ if (*tags) {
+ if (*tags == '{' || *tags == '[' || *tags == '"') {
+ tags_pre = "\"host_tags\":";
+ tags_post = ",";
+ } else {
+ tags_pre = "\"host_tags\":\"";
+ tags_post = "\",";
+ }
+ }
+
+ if (instance->config.type == EXPORTING_CONNECTOR_TYPE_JSON_HTTP) {
+ if (buffer_strlen((BUFFER *)instance->buffer) > 2)
+ buffer_strcat(instance->buffer, ",\n");
+ }
+
+ buffer_sprintf(
+ instance->buffer,
+
+ "{"
+ "\"prefix\":\"%s\","
+ "\"hostname\":\"%s\","
+ "%s%s%s"
+ "%s"
+
+ "\"chart_id\":\"%s\","
+ "\"chart_name\":\"%s\","
+ "\"chart_family\":\"%s\","
+ "\"chart_context\":\"%s\","
+ "\"chart_type\":\"%s\","
+ "\"units\":\"%s\","
+
+ "\"id\":\"%s\","
+ "\"name\":\"%s\","
+ "\"value\":" COLLECTED_NUMBER_FORMAT ","
+
+ "\"timestamp\":%llu}",
+
+ instance->config.prefix,
+ (host == localhost) ? instance->config.hostname : rrdhost_hostname(host),
+ tags_pre,
+ tags,
+ tags_post,
+ instance->labels_buffer ? buffer_tostring(instance->labels_buffer) : "",
+
+ rrdset_id(st),
+ rrdset_name(st),
+ rrdset_family(st),
+ rrdset_context(st),
+ rrdset_parts_type(st),
+ rrdset_units(st),
+ rrddim_id(rd),
+ rrddim_name(rd),
+ rd->last_collected_value,
+
+ (unsigned long long)rd->last_collected_time.tv_sec);
+
+ if (instance->config.type != EXPORTING_CONNECTOR_TYPE_JSON_HTTP) {
+ buffer_strcat(instance->buffer, "\n");
+ }
+
+ return 0;
+}
+
+/**
+ * Format dimension using a calculated value from stored data for JSON connector
+ *
+ * @param instance an instance data structure.
+ * @param rd a dimension.
+ * @return Always returns 0.
+ */
+int format_dimension_stored_json_plaintext(struct instance *instance, RRDDIM *rd)
+{
+ RRDSET *st = rd->rrdset;
+ RRDHOST *host = st->rrdhost;
+
+ time_t last_t;
+ NETDATA_DOUBLE value = exporting_calculate_value_from_stored_data(instance, rd, &last_t);
+
+ if(isnan(value))
+ return 0;
+
+ const char *tags_pre = "", *tags_post = "", *tags = rrdhost_tags(host);
+ if (!tags)
+ tags = "";
+
+ if (*tags) {
+ if (*tags == '{' || *tags == '[' || *tags == '"') {
+ tags_pre = "\"host_tags\":";
+ tags_post = ",";
+ } else {
+ tags_pre = "\"host_tags\":\"";
+ tags_post = "\",";
+ }
+ }
+
+ if (instance->config.type == EXPORTING_CONNECTOR_TYPE_JSON_HTTP) {
+ if (buffer_strlen((BUFFER *)instance->buffer) > 2)
+ buffer_strcat(instance->buffer, ",\n");
+ }
+
+ buffer_sprintf(
+ instance->buffer,
+ "{"
+ "\"prefix\":\"%s\","
+ "\"hostname\":\"%s\","
+ "%s%s%s"
+ "%s"
+
+ "\"chart_id\":\"%s\","
+ "\"chart_name\":\"%s\","
+ "\"chart_family\":\"%s\","
+ "\"chart_context\": \"%s\","
+ "\"chart_type\":\"%s\","
+ "\"units\": \"%s\","
+
+ "\"id\":\"%s\","
+ "\"name\":\"%s\","
+ "\"value\":" NETDATA_DOUBLE_FORMAT ","
+
+ "\"timestamp\": %llu}",
+
+ instance->config.prefix,
+ (host == localhost) ? instance->config.hostname : rrdhost_hostname(host),
+ tags_pre,
+ tags,
+ tags_post,
+ instance->labels_buffer ? buffer_tostring(instance->labels_buffer) : "",
+
+ rrdset_id(st),
+ rrdset_name(st),
+ rrdset_family(st),
+ rrdset_context(st),
+ rrdset_parts_type(st),
+ rrdset_units(st),
+ rrddim_id(rd),
+ rrddim_name(rd),
+ value,
+
+ (unsigned long long)last_t);
+
+ if (instance->config.type != EXPORTING_CONNECTOR_TYPE_JSON_HTTP) {
+ buffer_strcat(instance->buffer, "\n");
+ }
+
+ return 0;
+}
+
+/**
+ * Open a JSON list for a bach
+ *
+ * @param instance an instance data structure.
+ * @return Always returns 0.
+ */
+int open_batch_json_http(struct instance *instance)
+{
+ buffer_strcat(instance->buffer, "[\n");
+
+ return 0;
+}
+
+/**
+ * Close a JSON list for a bach and update buffered bytes counter
+ *
+ * @param instance an instance data structure.
+ * @return Always returns 0.
+ */
+int close_batch_json_http(struct instance *instance)
+{
+ buffer_strcat(instance->buffer, "\n]\n");
+
+ simple_connector_end_batch(instance);
+
+ return 0;
+}
+
+/**
+ * Prepare HTTP header
+ *
+ * @param instance an instance data structure.
+ * @return Returns 0 on success, 1 on failure.
+ */
+void json_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/json\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;
+}
diff --git a/exporting/json/json.h b/exporting/json/json.h
new file mode 100644
index 0000000..d916263
--- /dev/null
+++ b/exporting/json/json.h
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_EXPORTING_JSON_H
+#define NETDATA_EXPORTING_JSON_H
+
+#include "exporting/exporting_engine.h"
+
+int init_json_instance(struct instance *instance);
+int init_json_http_instance(struct instance *instance);
+
+int format_host_labels_json_plaintext(struct instance *instance, RRDHOST *host);
+
+int format_dimension_collected_json_plaintext(struct instance *instance, RRDDIM *rd);
+int format_dimension_stored_json_plaintext(struct instance *instance, RRDDIM *rd);
+
+int open_batch_json_http(struct instance *instance);
+int close_batch_json_http(struct instance *instance);
+
+void json_http_prepare_header(struct instance *instance);
+
+#endif //NETDATA_EXPORTING_JSON_H
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-16 09:06:58 +0000