New component: Exporter for OpenSearch

[MaxKsyunz]

The purpose and use-cases of the new component

An exporter for OpenSearch that sends signals directly to an OpenSearch cluster in a schema that is understood by the observability plugin.

It assumes that destination indices have the same mapping as data prepper.

Example configuration for the component

The exporter will have the following configuration options:

• endpoints -- List of OpenSearch URLs. If endpoints is missing, the OPENSEARCH_URL environment variable will be used.
• num_workers (optional) -- Number of workers publishing bulk requests concurrently.
• traces_index -- name of the index to publish traces to
• flush -- Event bulk buffer flush settings
  • bytes (default=5242880): Write buffer flush limit.
  • interval (default=30s): Write buffer time limit.
• retry: Event retry settings
  • enabled (default=true): Enable/Disable event retry on error. Retry support is enabled by default.
  • max_requests (default=3): Number of HTTP request retries.
  • initial_interval (default=100ms): Initial waiting time if a HTTP request failed.
  • max_interval (default=1m): Max waiting time if a HTTP request failed.

Telemetry data types supported

The exporter will support traces.

Is this a vendor-specific component?

• [X] This is a vendor-specific component
• [ ] If this is a vendor-specific component, I am proposing to contribute this as a representative of the vendor.

Sponsor (optional)

No response

Additional context

Metrics, logs and simple schema for observability support will be handled as separate PRs.