AssertOTelMetrics asserts OTel metrics using a closure.

DecodeBulkRequest decodes a /_bulk request's body, returning the decoded documents and a response body.

HandleBulk registers bulkHandler with mux for handling /_bulk requests, wrapping bulkHandler to conform with go-elasticsearch version checking.

NewAssertCounter returns a function that canbe used to assert counter metrics.

NewMockElasticsearchClient returns an elasticsearch.Client which sends /_bulk requests to bulkHandler.

NewMockElasticsearchClientConfig starts an httptest.Server, and returns an elasticsearch.Config which sends /_bulk requests to bulkHandler.

TimestampFormat holds the time format for formatting timestamps according to Elasticsearch's strict_date_optional_time date format, which includes a fractional seconds component.