diff options
Diffstat (limited to 'exporting/aws_kinesis/aws_kinesis.c')
| -rw-r--r-- | exporting/aws_kinesis/aws_kinesis.c | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/exporting/aws_kinesis/aws_kinesis.c b/exporting/aws_kinesis/aws_kinesis.c new file mode 100644 index 0000000..036afb4 --- /dev/null +++ b/exporting/aws_kinesis/aws_kinesis.c @@ -0,0 +1,217 @@ +// SPDX-License-Identifier: GPL-3.0-or-later + +#include "aws_kinesis.h" + +/** + * Clean AWS Kinesis * + */ +void aws_kinesis_cleanup(struct instance *instance) +{ + info("EXPORTING: cleaning up instance %s ...", instance->config.name); + kinesis_shutdown(instance->connector_specific_data); + + freez(instance->connector_specific_data); + + struct aws_kinesis_specific_config *connector_specific_config = instance->config.connector_specific_config; + if (connector_specific_config) { + freez(connector_specific_config->auth_key_id); + freez(connector_specific_config->secure_key); + freez(connector_specific_config->stream_name); + + freez(connector_specific_config); + } + + info("EXPORTING: instance %s exited", instance->config.name); + instance->exited = 1; +} + +/** + * Initialize AWS Kinesis connector instance + * + * @param instance an instance data structure. + * @return Returns 0 on success, 1 on failure. + */ +int init_aws_kinesis_instance(struct instance *instance) +{ + instance->worker = aws_kinesis_connector_worker; + + 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 = NULL; + + instance->prepare_header = NULL; + instance->check_response = NULL; + + instance->buffer = (void *)buffer_create(0); + if (!instance->buffer) { + error("EXPORTING: cannot create buffer for AWS Kinesis exporting connector instance %s", instance->config.name); + return 1; + } + if (uv_mutex_init(&instance->mutex)) + return 1; + if (uv_cond_init(&instance->cond_var)) + return 1; + + if (!instance->engine->aws_sdk_initialized) { + aws_sdk_init(); + instance->engine->aws_sdk_initialized = 1; + } + + struct aws_kinesis_specific_config *connector_specific_config = instance->config.connector_specific_config; + struct aws_kinesis_specific_data *connector_specific_data = callocz(1, sizeof(struct aws_kinesis_specific_data)); + instance->connector_specific_data = (void *)connector_specific_data; + + if (!strcmp(connector_specific_config->stream_name, "")) { + error("stream name is a mandatory Kinesis parameter but it is not configured"); + return 1; + } + + kinesis_init( + (void *)connector_specific_data, + instance->config.destination, + connector_specific_config->auth_key_id, + connector_specific_config->secure_key, + instance->config.timeoutms); + + return 0; +} + +/** + * AWS Kinesis connector worker + * + * Runs in a separate thread for every instance. + * + * @param instance_p an instance data structure. + */ +void aws_kinesis_connector_worker(void *instance_p) +{ + struct instance *instance = (struct instance *)instance_p; + struct aws_kinesis_specific_config *connector_specific_config = instance->config.connector_specific_config; + struct aws_kinesis_specific_data *connector_specific_data = instance->connector_specific_data; + + while (!instance->engine->exit) { + unsigned long long partition_key_seq = 0; + struct stats *stats = &instance->stats; + + uv_mutex_lock(&instance->mutex); + while (!instance->data_is_ready) + uv_cond_wait(&instance->cond_var, &instance->mutex); + instance->data_is_ready = 0; + + if (unlikely(instance->engine->exit)) { + uv_mutex_unlock(&instance->mutex); + break; + } + + // reset the monitoring chart counters + stats->received_bytes = + stats->sent_bytes = + stats->sent_metrics = + stats->lost_metrics = + stats->receptions = + stats->transmission_successes = + stats->transmission_failures = + stats->data_lost_events = + stats->lost_bytes = + stats->reconnects = 0; + + BUFFER *buffer = (BUFFER *)instance->buffer; + size_t buffer_len = buffer_strlen(buffer); + + stats->buffered_bytes = buffer_len; + + size_t sent = 0; + + while (sent < buffer_len) { + char partition_key[KINESIS_PARTITION_KEY_MAX + 1]; + snprintf(partition_key, KINESIS_PARTITION_KEY_MAX, "netdata_%llu", partition_key_seq++); + size_t partition_key_len = strnlen(partition_key, KINESIS_PARTITION_KEY_MAX); + + const char *first_char = buffer_tostring(buffer) + sent; + + size_t record_len = 0; + + // split buffer into chunks of maximum allowed size + if (buffer_len - sent < KINESIS_RECORD_MAX - partition_key_len) { + record_len = buffer_len - sent; + } else { + record_len = KINESIS_RECORD_MAX - partition_key_len; + while (record_len && *(first_char + record_len - 1) != '\n') + record_len--; + } + char error_message[ERROR_LINE_MAX + 1] = ""; + + debug( + D_BACKEND, + "EXPORTING: kinesis_put_record(): dest = %s, id = %s, key = %s, stream = %s, partition_key = %s, \ + buffer = %zu, record = %zu", + instance->config.destination, + connector_specific_config->auth_key_id, + connector_specific_config->secure_key, + connector_specific_config->stream_name, + partition_key, + buffer_len, + record_len); + + kinesis_put_record( + connector_specific_data, connector_specific_config->stream_name, partition_key, first_char, record_len); + + sent += record_len; + stats->transmission_successes++; + + size_t sent_bytes = 0, lost_bytes = 0; + + if (unlikely(kinesis_get_result( + connector_specific_data->request_outcomes, error_message, &sent_bytes, &lost_bytes))) { + // oops! we couldn't send (all or some of the) data + error("EXPORTING: %s", error_message); + error( + "EXPORTING: failed to write data to database backend '%s'. Willing to write %zu bytes, wrote %zu bytes.", + instance->config.destination, sent_bytes, sent_bytes - lost_bytes); + + stats->transmission_failures++; + stats->data_lost_events++; + stats->lost_bytes += lost_bytes; + + // estimate the number of lost metrics + stats->lost_metrics += (collected_number)( + stats->buffered_metrics * + (buffer_len && (lost_bytes > buffer_len) ? (double)lost_bytes / buffer_len : 1)); + + break; + } else { + stats->receptions++; + } + + if (unlikely(instance->engine->exit)) + break; + } + + stats->sent_bytes += sent; + if (likely(sent == buffer_len)) + stats->sent_metrics = stats->buffered_metrics; + + buffer_flush(buffer); + + send_internal_metrics(instance); + + stats->buffered_metrics = 0; + + uv_mutex_unlock(&instance->mutex); + +#ifdef UNIT_TESTING + return; +#endif + } + + aws_kinesis_cleanup(instance); +} |