[improve] http protocol prometheus parsing optimization

[zhangshenghang]

What's changed?

#1992

• Prometheus parsing SUMMARY and HISTOGRAM type data parsing support under HTTP protocol
• Prometheus parses monitoring indicator names under HTTP protocol and displays them on the page
• Updated ExporterParserTest test class
• Some Chinese comments translated into English

Checklist

• I have read the Contributing Guide
• I have written the necessary doc or comment.
• I have added the necessary unit tests and all cases have passed.

Monitoring metic display name

# TYPE log4j2_appender counter
log4j2_appender_total{cluster="standalone",level="debug"} 0.0
log4j2_appender_created{cluster="standalone",level="debug"} 1.715842133768E9
log4j2_appender_total{cluster="standalone",level="warn"} 12.0
log4j2_appender_created{cluster="standalone",level="warn"} 1.715842133768E9
log4j2_appender_total{cluster="standalone",level="trace"} 0.0
log4j2_appender_created{cluster="standalone",level="trace"} 1.715842133768E9
log4j2_appender_total{cluster="standalone",level="error"} 7.0
log4j2_appender_created{cluster="standalone",level="error"} 1.715842133768E9
log4j2_appender_total{cluster="standalone",level="fatal"} 0.0
log4j2_appender_created{cluster="standalone",level="fatal"} 1.715842133768E9
log4j2_appender_total{cluster="standalone",level="info"} 660.0
log4j2_appender_created{cluster="standalone",level="info"} 1.715842133768E9

histogram type data

# TYPE pulsar_metadata_store_ops_latency_ms histogram
pulsar_metadata_store_ops_latency_ms_bucket{cluster="standalone",name="metadata-store",type="get",status="success",le="1.0"} 59.0
pulsar_metadata_store_ops_latency_ms_bucket{cluster="standalone",name="metadata-store",type="get",status="success",le="3.0"} 61.0
pulsar_metadata_store_ops_latency_ms_bucket{cluster="standalone",name="metadata-store",type="get",status="success",le="5.0"} 61.0
pulsar_metadata_store_ops_latency_ms_bucket{cluster="standalone",name="metadata-store",type="get",status="success",le="10.0"} 61.0
pulsar_metadata_store_ops_latency_ms_bucket{cluster="standalone",name="metadata-store",type="get",status="success",le="20.0"} 61.0
pulsar_metadata_store_ops_latency_ms_bucket{cluster="standalone",name="metadata-store",type="get",status="success",le="50.0"} 61.0
pulsar_metadata_store_ops_latency_ms_bucket{cluster="standalone",name="metadata-store",type="get",status="success",le="100.0"} 61.0
pulsar_metadata_store_ops_latency_ms_bucket{cluster="standalone",name="metadata-store",type="get",status="success",le="200.0"} 61.0
pulsar_metadata_store_ops_latency_ms_bucket{cluster="standalone",name="metadata-store",type="get",status="success",le="500.0"} 61.0

summary type data

# TYPE pulsar_resource_group_aggregate_usage_secs summary
pulsar_resource_group_aggregate_usage_secs{cluster="standalone",quantile="0.5"} 2.69245E-4
pulsar_resource_group_aggregate_usage_secs{cluster="standalone",quantile="0.9"} 3.49601E-4
pulsar_resource_group_aggregate_usage_secs_count{cluster="standalone"} 13.0
pulsar_resource_group_aggregate_usage_secs_sum{cluster="standalone"} 0.004832498
pulsar_resource_group_aggregate_usage_secs_created{cluster="standalone"} 1.715842140749E9

[tomsun28]

LGTM!👍