// SPDX-License-Identifier: GPL-3.0-or-later #include "exporting_engine.h" #include "graphite/graphite.h" #include "json/json.h" #include "opentsdb/opentsdb.h" #ifdef ENABLE_PROMETHEUS_REMOTE_WRITE #include "prometheus/remote_write/remote_write.h" #endif #if HAVE_KINESIS #include "aws_kinesis/aws_kinesis.h" #endif #ifdef ENABLE_EXPORTING_PUBSUB #include "pubsub/pubsub.h" #endif #ifdef HAVE_MONGOC #include "mongodb/mongodb.h" #endif /** * Initialize connectors * * @param engine an engine data structure. * @return Returns 0 on success, 1 on failure. */ int init_connectors(struct engine *engine) { engine->now = now_realtime_sec(); for (struct instance *instance = engine->instance_root; instance; instance = instance->next) { instance->index = engine->instance_num++; instance->after = engine->now; switch (instance->config.type) { case EXPORTING_CONNECTOR_TYPE_GRAPHITE: if (init_graphite_instance(instance) != 0) return 1; break; case EXPORTING_CONNECTOR_TYPE_GRAPHITE_HTTP: if (init_graphite_instance(instance) != 0) return 1; break; case EXPORTING_CONNECTOR_TYPE_JSON: if (init_json_instance(instance) != 0) return 1; break; case EXPORTING_CONNECTOR_TYPE_JSON_HTTP: if (init_json_http_instance(instance) != 0) return 1; break; case EXPORTING_CONNECTOR_TYPE_OPENTSDB: if (init_opentsdb_telnet_instance(instance) != 0) return 1; break; case EXPORTING_CONNECTOR_TYPE_OPENTSDB_HTTP: if (init_opentsdb_http_instance(instance) != 0) return 1; break; case EXPORTING_CONNECTOR_TYPE_PROMETHEUS_REMOTE_WRITE: #ifdef ENABLE_PROMETHEUS_REMOTE_WRITE if (init_prometheus_remote_write_instance(instance) != 0) return 1; #endif break; case EXPORTING_CONNECTOR_TYPE_KINESIS: #if HAVE_KINESIS if (init_aws_kinesis_instance(instance) != 0) return 1; #endif break; case EXPORTING_CONNECTOR_TYPE_PUBSUB: #if ENABLE_EXPORTING_PUBSUB if (init_pubsub_instance(instance) != 0) return 1; #endif break; case EXPORTING_CONNECTOR_TYPE_MONGODB: #ifdef HAVE_MONGOC if (init_mongodb_instance(instance) != 0) return 1; #endif break; default: netdata_log_error("EXPORTING: unknown exporting connector type"); return 1; } // dispatch the instance worker thread int error = uv_thread_create(&instance->thread, instance->worker, instance); if (error) { netdata_log_error("EXPORTING: cannot create thread worker. uv_thread_create(): %s", uv_strerror(error)); return 1; } analytics_statistic_t statistic = { "EXPORTING_START", "OK", instance->config.type_name }; analytics_statistic_send(&statistic); } return 0; } // TODO: use a base64 encoder from a library static size_t base64_encode(unsigned char *input, size_t input_size, char *output, size_t output_size) { uint32_t value; static char lookup[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" "abcdefghijklmnopqrstuvwxyz" "0123456789+/"; if ((input_size / 3 + 1) * 4 >= output_size) { netdata_log_error("Output buffer for encoding size=%zu is not large enough for %zu-bytes input", output_size, input_size); return 0; } size_t count = 0; while (input_size >= 3) { value = ((input[0] << 16) + (input[1] << 8) + input[2]) & 0xffffff; output[0] = lookup[value >> 18]; output[1] = lookup[(value >> 12) & 0x3f]; output[2] = lookup[(value >> 6) & 0x3f]; output[3] = lookup[value & 0x3f]; //netdata_log_error("Base-64 encode (%04x) -> %c %c %c %c\n", value, output[0], output[1], output[2], output[3]); output += 4; input += 3; input_size -= 3; count += 4; } switch (input_size) { case 2: value = (input[0] << 10) + (input[1] << 2); output[0] = lookup[(value >> 12) & 0x3f]; output[1] = lookup[(value >> 6) & 0x3f]; output[2] = lookup[value & 0x3f]; output[3] = '='; //netdata_log_error("Base-64 encode (%06x) -> %c %c %c %c\n", (value>>2)&0xffff, output[0], output[1], output[2], output[3]); count += 4; output[4] = '\0'; break; case 1: value = input[0] << 4; output[0] = lookup[(value >> 6) & 0x3f]; output[1] = lookup[value & 0x3f]; output[2] = '='; output[3] = '='; //netdata_log_error("Base-64 encode (%06x) -> %c %c %c %c\n", value, output[0], output[1], output[2], output[3]); count += 4; output[4] = '\0'; break; case 0: output[0] = '\0'; break; } return count; } /** * Initialize a ring buffer and credentials for a simple connector * * @param instance an instance data structure. */ void simple_connector_init(struct instance *instance) { struct simple_connector_data *connector_specific_data = (struct simple_connector_data *)instance->connector_specific_data; if (connector_specific_data->first_buffer) return; connector_specific_data->header = buffer_create(0, &netdata_buffers_statistics.buffers_exporters); connector_specific_data->buffer = buffer_create(0, &netdata_buffers_statistics.buffers_exporters); // create a ring buffer struct simple_connector_buffer *first_buffer = NULL; if (instance->config.buffer_on_failures < 1) instance->config.buffer_on_failures = 1; for (int i = 0; i < instance->config.buffer_on_failures; i++) { struct simple_connector_buffer *current_buffer = callocz(1, sizeof(struct simple_connector_buffer)); if (!connector_specific_data->first_buffer) first_buffer = current_buffer; else current_buffer->next = connector_specific_data->first_buffer; connector_specific_data->first_buffer = current_buffer; } first_buffer->next = connector_specific_data->first_buffer; connector_specific_data->last_buffer = connector_specific_data->first_buffer; if (*instance->config.username || *instance->config.password) { BUFFER *auth_string = buffer_create(0, &netdata_buffers_statistics.buffers_exporters); buffer_sprintf(auth_string, "%s:%s", instance->config.username, instance->config.password); size_t encoded_size = (buffer_strlen(auth_string) / 3 + 1) * 4 + 1; char *encoded_credentials = callocz(1, encoded_size); base64_encode((unsigned char*)buffer_tostring(auth_string), buffer_strlen(auth_string), encoded_credentials, encoded_size); buffer_flush(auth_string); buffer_sprintf(auth_string, "Authorization: Basic %s\n", encoded_credentials); freez(encoded_credentials); connector_specific_data->auth_string = strdupz(buffer_tostring(auth_string)); buffer_free(auth_string); } return; }