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8f3dd877ff
This patch add visibility to the WCU metrics. It uses a label 'ops' to split each of the operations that contribute to WCU into their operations. When summing over all ops value the result will be the same.
118 lines
7.9 KiB
C++
118 lines
7.9 KiB
C++
/*
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* Copyright 2019-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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#include "stats.hh"
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#include "utils/histogram_metrics_helper.hh"
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#include <seastar/core/metrics.hh>
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namespace alternator {
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const char* ALTERNATOR_METRICS = "alternator";
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stats::stats() : api_operations{} {
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// Register the
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seastar::metrics::label op("op");
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_metrics.add_group("alternator", {
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#define OPERATION(name, CamelCaseName) \
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seastar::metrics::make_total_operations("operation", api_operations.name, \
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seastar::metrics::description("number of operations via Alternator API"), {op(CamelCaseName)}).set_skip_when_empty(),
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#define OPERATION_LATENCY(name, CamelCaseName) \
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seastar::metrics::make_histogram("op_latency", \
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seastar::metrics::description("Latency histogram of an operation via Alternator API"), {op(CamelCaseName)}, [this]{return to_metrics_histogram(api_operations.name.histogram());}).aggregate({seastar::metrics::shard_label}).set_skip_when_empty(), \
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seastar::metrics::make_summary("op_latency_summary", \
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seastar::metrics::description("Latency summary of an operation via Alternator API"), [this]{return to_metrics_summary(api_operations.name.summary());})(op(CamelCaseName)).set_skip_when_empty(),
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OPERATION(batch_get_item, "BatchGetItem")
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OPERATION(batch_write_item, "BatchWriteItem")
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OPERATION(create_backup, "CreateBackup")
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OPERATION(create_global_table, "CreateGlobalTable")
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OPERATION(create_table, "CreateTable")
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OPERATION(delete_backup, "DeleteBackup")
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OPERATION(delete_item, "DeleteItem")
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OPERATION(delete_table, "DeleteTable")
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OPERATION(describe_backup, "DescribeBackup")
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OPERATION(describe_continuous_backups, "DescribeContinuousBackups")
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OPERATION(describe_endpoints, "DescribeEndpoints")
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OPERATION(describe_global_table, "DescribeGlobalTable")
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OPERATION(describe_global_table_settings, "DescribeGlobalTableSettings")
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OPERATION(describe_limits, "DescribeLimits")
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OPERATION(describe_table, "DescribeTable")
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OPERATION(describe_time_to_live, "DescribeTimeToLive")
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OPERATION(get_item, "GetItem")
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OPERATION(list_backups, "ListBackups")
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OPERATION(list_global_tables, "ListGlobalTables")
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OPERATION(list_tables, "ListTables")
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OPERATION(list_tags_of_resource, "ListTagsOfResource")
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OPERATION(put_item, "PutItem")
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OPERATION(query, "Query")
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OPERATION(restore_table_from_backup, "RestoreTableFromBackup")
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OPERATION(restore_table_to_point_in_time, "RestoreTableToPointInTime")
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OPERATION(scan, "Scan")
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OPERATION(tag_resource, "TagResource")
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OPERATION(transact_get_items, "TransactGetItems")
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OPERATION(transact_write_items, "TransactWriteItems")
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OPERATION(untag_resource, "UntagResource")
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OPERATION(update_continuous_backups, "UpdateContinuousBackups")
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OPERATION(update_global_table, "UpdateGlobalTable")
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OPERATION(update_global_table_settings, "UpdateGlobalTableSettings")
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OPERATION(update_item, "UpdateItem")
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OPERATION(update_table, "UpdateTable")
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OPERATION(update_time_to_live, "UpdateTimeToLive")
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OPERATION_LATENCY(put_item_latency, "PutItem")
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OPERATION_LATENCY(get_item_latency, "GetItem")
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OPERATION_LATENCY(delete_item_latency, "DeleteItem")
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OPERATION_LATENCY(update_item_latency, "UpdateItem")
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OPERATION_LATENCY(batch_write_item_latency, "BatchWriteItem")
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OPERATION_LATENCY(batch_get_item_latency, "BatchGetItem")
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OPERATION(list_streams, "ListStreams")
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OPERATION(describe_stream, "DescribeStream")
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OPERATION(get_shard_iterator, "GetShardIterator")
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OPERATION(get_records, "GetRecords")
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OPERATION_LATENCY(get_records_latency, "GetRecords")
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});
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_metrics.add_group("alternator", {
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seastar::metrics::make_total_operations("unsupported_operations", unsupported_operations,
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seastar::metrics::description("number of unsupported operations via Alternator API")),
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seastar::metrics::make_total_operations("total_operations", total_operations,
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seastar::metrics::description("number of total operations via Alternator API")),
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seastar::metrics::make_total_operations("reads_before_write", reads_before_write,
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seastar::metrics::description("number of performed read-before-write operations")),
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seastar::metrics::make_total_operations("write_using_lwt", write_using_lwt,
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seastar::metrics::description("number of writes that used LWT")),
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seastar::metrics::make_total_operations("shard_bounce_for_lwt", shard_bounce_for_lwt,
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seastar::metrics::description("number writes that had to be bounced from this shard because of LWT requirements")),
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seastar::metrics::make_total_operations("requests_blocked_memory", requests_blocked_memory,
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seastar::metrics::description("Counts a number of requests blocked due to memory pressure.")),
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seastar::metrics::make_total_operations("requests_shed", requests_shed,
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seastar::metrics::description("Counts a number of requests shed due to overload.")),
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seastar::metrics::make_total_operations("filtered_rows_read_total", cql_stats.filtered_rows_read_total,
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seastar::metrics::description("number of rows read during filtering operations")),
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seastar::metrics::make_total_operations("filtered_rows_matched_total", cql_stats.filtered_rows_matched_total,
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seastar::metrics::description("number of rows read and matched during filtering operations")),
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seastar::metrics::make_counter("rcu_total", rcu_total,
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seastar::metrics::description("total number of consumed read units, counted as half units")).set_skip_when_empty(),
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seastar::metrics::make_counter("wcu_total", wcu_total[wcu_types::PUT_ITEM],
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seastar::metrics::description("total number of consumed write units, counted as half units"),{op("PutItem")}).set_skip_when_empty(),
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seastar::metrics::make_counter("wcu_total", wcu_total[wcu_types::DELETE_ITEM],
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seastar::metrics::description("total number of consumed write units, counted as half units"),{op("DeleteItem")}).set_skip_when_empty(),
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seastar::metrics::make_counter("wcu_total", wcu_total[wcu_types::UPDATE_ITEM],
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seastar::metrics::description("total number of consumed write units, counted as half units"),{op("UpdateItem")}).set_skip_when_empty(),
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seastar::metrics::make_counter("wcu_total", wcu_total[wcu_types::INDEX],
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seastar::metrics::description("total number of consumed write units, counted as half units"),{op("Index")}).set_skip_when_empty(),
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seastar::metrics::make_total_operations("filtered_rows_dropped_total", [this] { return cql_stats.filtered_rows_read_total - cql_stats.filtered_rows_matched_total; },
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seastar::metrics::description("number of rows read and dropped during filtering operations")),
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seastar::metrics::make_counter("batch_item_count", seastar::metrics::description("The total number of items processed across all batches"),{op("BatchWriteItem")},
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api_operations.batch_write_item_batch_total).set_skip_when_empty(),
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seastar::metrics::make_counter("batch_item_count", seastar::metrics::description("The total number of items processed across all batches"),{op("BatchGetItem")},
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api_operations.batch_get_item_batch_total).set_skip_when_empty(),
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});
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}
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}
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