diff options
Diffstat (limited to 'exporting/init_connectors.c')
| -rw-r--r-- | exporting/init_connectors.c | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/exporting/init_connectors.c b/exporting/init_connectors.c new file mode 100644 index 00000000..5167a68c --- /dev/null +++ b/exporting/init_connectors.c @@ -0,0 +1,218 @@ +// SPDX-License-Identifier: GPL-3.0-or-later + +#include "exporting_engine.h" +#include "graphite/graphite.h" +#include "json/json.h" +#include "opentsdb/opentsdb.h" + +#if ENABLE_PROMETHEUS_REMOTE_WRITE +#include "prometheus/remote_write/remote_write.h" +#endif + +#if HAVE_KINESIS +#include "aws_kinesis/aws_kinesis.h" +#endif + +#if ENABLE_EXPORTING_PUBSUB +#include "pubsub/pubsub.h" +#endif + +#if 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: +#if 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: +#if 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; + } + char threadname[NETDATA_THREAD_NAME_MAX + 1]; + snprintfz(threadname, NETDATA_THREAD_NAME_MAX, "EXPORTING-%zu", instance->index); + uv_thread_set_name_np(instance->thread, threadname); + + send_statistics("EXPORTING_START", "OK", instance->config.type_name); + } + + 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; +} |