From 2e85f9325a797977eea9dfea0a925775ddd211d9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Feb 2021 12:49:00 +0100 Subject: Merging upstream version 1.29.0. Signed-off-by: Daniel Baumann --- exporting/json/json.c | 362 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 362 insertions(+) create mode 100644 exporting/json/json.c (limited to 'exporting/json/json.c') diff --git a/exporting/json/json.c b/exporting/json/json.c new file mode 100644 index 000000000..f2396bafa --- /dev/null +++ b/exporting/json/json.c @@ -0,0 +1,362 @@ +// 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->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->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) + instance->labels = buffer_create(1024); + + if (unlikely(!sending_labels_configured(instance))) + return 0; + + buffer_strcat(instance->labels, "\"labels\":{"); + + int count = 0; + rrdhost_check_rdlock(host); + netdata_rwlock_rdlock(&host->labels.labels_rwlock); + for (struct label *label = host->labels.head; label; label = label->next) { + if (!should_send_label(instance, label)) + continue; + + char value[CONFIG_MAX_VALUE * 2 + 1]; + sanitize_json_string(value, label->value, CONFIG_MAX_VALUE); + if (count > 0) + buffer_strcat(instance->labels, ","); + buffer_sprintf(instance->labels, "\"%s\":\"%s\"", label->key, value); + + count++; + } + netdata_rwlock_unlock(&host->labels.labels_rwlock); + + buffer_strcat(instance->labels, "},"); + + 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 = host->tags; + 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 : host->hostname, + tags_pre, + tags, + tags_post, + instance->labels ? buffer_tostring(instance->labels) : "", + + st->id, + st->name, + st->family, + st->context, + st->type, + st->units, + + rd->id, + rd->name, + 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; + calculated_number value = exporting_calculate_value_from_stored_data(instance, rd, &last_t); + + if(isnan(value)) + return 0; + + const char *tags_pre = "", *tags_post = "", *tags = host->tags; + 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\":" CALCULATED_NUMBER_FORMAT "," + + "\"timestamp\": %llu}", + + instance->config.prefix, + (host == localhost) ? instance->config.hostname : host->hostname, + tags_pre, + tags, + tags_post, + instance->labels ? buffer_tostring(instance->labels) : "", + + st->id, + st->name, + st->family, + st->context, + st->type, + st->units, + + rd->id, + rd->name, + 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" + "Content-Type: application/json\r\n" + "Content-Length: %lu\r\n" + "\r\n", + instance->config.destination, + buffer_strlen(simple_connector_data->last_buffer->buffer)); + + return; +} -- cgit v1.2.3