enhancement(http sink): Adhere to instrumentation spec

[neuronull]

Closes: #14301

Epic: #13995

Error and EventsDropped emission seems to be handled by common code for this sink.

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Soak Test Results

Baseline: f705842
Comparison: afceb08
Total Vector CPUs: 4

Explanation

A soak test is an integrated performance test for vector in a repeatable rig, with varying configuration for vector. What follows is a statistical summary of a brief vector run for each configuration across SHAs given above. The goal of these tests are to determine, quickly, if vector performance is changed and to what degree by a pull request. Where appropriate units are scaled per-core.

The table below, if present, lists those experiments that have experienced a statistically significant change in their throughput performance between baseline and comparision SHAs, with 90.0% confidence OR have been detected as newly erratic. Negative values mean that baseline is faster, positive comparison. Results that do not exhibit more than a ±8.87% change in mean throughput are discarded. An experiment is erratic if its coefficient of variation is greater than 0.3. The abbreviated table will be omitted if no interesting changes are observed.

Changes in throughput with confidence ≥ 90.00% and absolute Δ mean >= ±8.87%:

experiment	Δ mean	Δ mean %	confidence
socket_to_socket_blackhole	1.93MiB	8.91	100.00%

Fine details of change detection per experiment.

experiment	Δ mean	Δ mean %	confidence	baseline mean	baseline stdev	baseline stderr	baseline outlier %	baseline CoV	comparison mean	comparison stdev	comparison stderr	comparison outlier %	comparison CoV	erratic	declared erratic
socket_to_socket_blackhole	1.93MiB	8.91	100.00%	21.64MiB	3.29MiB	68.73KiB	0	0.151885	23.57MiB	154.75KiB	3.16KiB	0	0.00641025	False	False
datadog_agent_remap_blackhole	1.53MiB	2.65	100.00%	57.65MiB	5.31MiB	110.66KiB	0	0.092057	59.18MiB	4.19MiB	87.39KiB	0	0.0707621	False	False
syslog_regex_logs2metric_ddmetrics	326.7KiB	2.63	100.00%	12.12MiB	679.51KiB	13.86KiB	0	0.0547378	12.44MiB	559.22KiB	11.39KiB	0	0.043892	False	False
datadog_agent_remap_datadog_logs	1.41MiB	2.33	100.00%	60.37MiB	3.06MiB	64.22KiB	0	0.0507218	61.77MiB	4.22MiB	87.79KiB	0	0.0682432	False	False
syslog_log2metric_splunk_hec_metrics	250.8KiB	1.43	100.00%	17.18MiB	1.06MiB	22.13KiB	0	0.0617164	17.43MiB	1.08MiB	22.54KiB	0	0.0621005	False	False
datadog_agent_remap_datadog_logs_acks	788.74KiB	1.27	100.00%	60.71MiB	3.95MiB	82.5KiB	0	0.0649742	61.48MiB	4.41MiB	91.72KiB	0	0.0716553	False	False
http_pipelines_blackhole_acks	7.34KiB	0.61	98.56%	1.18MiB	119.33KiB	2.43KiB	0	0.098644	1.19MiB	86.1KiB	1.76KiB	0	0.0707442	False	False
syslog_log2metric_humio_metrics	72.76KiB	0.57	100.00%	12.45MiB	552.36KiB	11.27KiB	0	0.0433109	12.52MiB	616.62KiB	12.56KiB	0	0.0480759	False	False
syslog_humio_logs	75.05KiB	0.46	100.00%	15.78MiB	280.7KiB	5.73KiB	0	0.0173694	15.85MiB	345.32KiB	7.07KiB	0	0.0212697	False	False
datadog_agent_remap_blackhole_acks	227.22KiB	0.36	96.95%	61.85MiB	4.25MiB	88.44KiB	0	0.0686543	62.07MiB	2.7MiB	56.54KiB	0	0.0435295	False	False
http_pipelines_no_grok_blackhole	36.7KiB	0.34	89.32%	10.59MiB	525.62KiB	10.73KiB	0	0.0484562	10.63MiB	985.53KiB	20.06KiB	0	0.0905479	False	False
http_text_to_http_json	70.73KiB	0.18	99.59%	37.95MiB	872.23KiB	17.8KiB	0	0.0224386	38.02MiB	834.29KiB	17.03KiB	0	0.0214235	False	False
splunk_hec_to_splunk_hec_logs_noack	23.6KiB	0.1	94.13%	23.82MiB	509.16KiB	10.39KiB	0	0.0208716	23.84MiB	338.6KiB	6.92KiB	0	0.0138664	False	False
splunk_hec_indexer_ack_blackhole	2.91KiB	0.01	8.93%	23.75MiB	894.66KiB	18.2KiB	0	0.0367812	23.75MiB	905.15KiB	18.42KiB	0	0.037208	False	False
enterprise_http_to_http	715.37B	0	7.61%	23.85MiB	253.59KiB	5.18KiB	0	0.0103835	23.85MiB	252.77KiB	5.17KiB	0	0.0103496	False	False
file_to_blackhole	-39.25KiB	-0.04	28.34%	95.33MiB	3.57MiB	74.03KiB	0	0.0374721	95.3MiB	3.79MiB	78.8KiB	0	0.0397185	False	False
http_pipelines_blackhole	-1.55KiB	-0.09	43.75%	1.69MiB	58.82KiB	1.2KiB	0	0.0340074	1.69MiB	117.0KiB	2.38KiB	0	0.0677022	False	False
splunk_hec_to_splunk_hec_logs_acks	-27.92KiB	-0.11	74.79%	23.77MiB	790.99KiB	16.1KiB	0	0.0324928	23.74MiB	900.43KiB	18.31KiB	0	0.0370311	False	False
http_to_http_json	-39.99KiB	-0.16	99.79%	23.85MiB	334.91KiB	6.84KiB	0	0.0137128	23.81MiB	542.43KiB	11.07KiB	0	0.0222456	False	False
http_to_http_noack	-76.5KiB	-0.31	99.94%	23.84MiB	408.95KiB	8.37KiB	0	0.0167504	23.76MiB	1016.37KiB	20.7KiB	0	0.041761	False	False
syslog_splunk_hec_logs	-64.69KiB	-0.39	99.94%	16.38MiB	705.39KiB	14.37KiB	0	0.0420574	16.31MiB	600.29KiB	12.25KiB	0	0.0359294	False	False
fluent_elasticsearch	-418.89KiB	-0.51	100.00%	79.47MiB	53.72KiB	1.08KiB	0	0.000659928	79.06MiB	4.54MiB	93.17KiB	0	0.0573537	False	False
syslog_loki	-100.08KiB	-0.69	100.00%	14.14MiB	512.88KiB	10.51KiB	0	0.0354195	14.04MiB	849.49KiB	17.27KiB	0	0.0590746	False	False
http_to_http_acks	-198.4KiB	-1.12	59.53%	17.35MiB	8.19MiB	171.1KiB	0	0.471644	17.16MiB	7.93MiB	165.53KiB	0	0.462027	True	True
splunk_hec_route_s3	-225.91KiB	-1.19	99.89%	18.53MiB	2.34MiB	48.77KiB	0	0.126234	18.31MiB	2.35MiB	49.21KiB	0	0.128494	False	False