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refactor metrics capture to its own mixin
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app/models/manageiq/providers/kubernetes/container_manager/metrics_capture_mixin.rb
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,126 @@ | ||
| module ManageIQ::Providers::Kubernetes::ContainerManager::MetricsCaptureMixin | ||
| class CollectionFailure < RuntimeError; end | ||
| class NoMetricsFoundError < RuntimeError; end | ||
|
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| class TargetValidationError < RuntimeError | ||
| def log_severity | ||
| :error | ||
| end | ||
| end | ||
|
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| class TargetValidationWarning < RuntimeError | ||
| def log_severity | ||
| :warn | ||
| end | ||
| end | ||
|
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| INTERVAL = 60.seconds | ||
|
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| VIM_STYLE_COUNTERS = { | ||
| "cpu_usage_rate_average" => { | ||
| :counter_key => "cpu_usage_rate_average", | ||
| :instance => "", | ||
| :capture_interval => INTERVAL.to_s, | ||
| :precision => 1, | ||
| :rollup => "average", | ||
| :unit_key => "percent", | ||
| :capture_interval_name => "realtime" | ||
| }, | ||
| "mem_usage_absolute_average" => { | ||
| :counter_key => "mem_usage_absolute_average", | ||
| :instance => "", | ||
| :capture_interval => INTERVAL.to_s, | ||
| :precision => 1, | ||
| :rollup => "average", | ||
| :unit_key => "percent", | ||
| :capture_interval_name => "realtime" | ||
| }, | ||
| "net_usage_rate_average" => { | ||
| :counter_key => "net_usage_rate_average", | ||
| :instance => "", | ||
| :capture_interval => INTERVAL.to_s, | ||
| :precision => 1, | ||
| :rollup => "average", | ||
| :unit_key => "kilobytespersecond", | ||
| :capture_interval_name => "realtime" | ||
| } | ||
| } | ||
|
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| def prometheus_capture_context(target, start_time, end_time) | ||
| PrometheusCaptureContext.new(target, start_time, end_time, INTERVAL) | ||
| end | ||
|
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| def metrics_connection(ems) | ||
| ems.connection_configurations.prometheus | ||
| end | ||
|
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| def metrics_connection_valid?(ems) | ||
| metrics_connection(ems)&.authentication&.status == "Valid" | ||
| end | ||
|
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| def verify_metrics_connection!(ems) | ||
| raise TargetValidationError, "no provider for #{target_name}" if ems.nil? | ||
|
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| raise TargetValidationWarning, "no metrics endpoint found for #{target_name}" if metrics_connection(ems).nil? | ||
| raise TargetValidationWarning, "metrics authentication isn't valid for #{target_name}" unless metrics_connection_valid?(ems) | ||
| end | ||
|
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| def build_capture_context!(ems, target, start_time, end_time) | ||
| verify_metrics_connection!(ems) | ||
| # make start_time align to minutes | ||
| start_time = start_time.beginning_of_minute | ||
|
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| context = prometheus_capture_context(target, start_time, end_time) | ||
| raise TargetValidationWarning, "no metrics endpoint found for #{target_name}" if context.nil? | ||
|
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| context | ||
| end | ||
|
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| def perf_collect_metrics(interval_name, start_time = nil, end_time = nil) | ||
| raise "No EMS defined" if target.ext_management_system.nil? | ||
|
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| start_time ||= 15.minutes.ago.beginning_of_minute.utc | ||
| ems = target.ext_management_system | ||
|
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| _log.info("Collecting metrics for #{target_name} [#{interval_name}] [#{start_time}] [#{end_time}]") | ||
|
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| begin | ||
| context = build_capture_context!(ems, target, start_time, end_time) | ||
| rescue TargetValidationError, TargetValidationWarning => e | ||
| _log.send(e.log_severity, "[#{target_name}] #{e.message}") | ||
| ems.try(:update, | ||
| :last_metrics_error => :invalid, | ||
| :last_metrics_update_date => Time.now.utc) | ||
| raise | ||
| end | ||
|
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| Benchmark.realtime_block(:collect_data) do | ||
| begin | ||
| context.collect_metrics | ||
| rescue NoMetricsFoundError => e | ||
| _log.warn("Metrics missing: [#{target_name}] #{e.message}") | ||
| rescue StandardError => e | ||
| _log.error("Metrics unavailable: [#{target_name}] #{e.message}") | ||
| ems.update(:last_metrics_error => :unavailable, | ||
| :last_metrics_update_date => Time.now.utc) if ems | ||
| raise | ||
| end | ||
| end | ||
|
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| ems.update(:last_metrics_error => nil, | ||
| :last_metrics_update_date => Time.now.utc, | ||
| :last_metrics_success_date => Time.now.utc) if ems | ||
|
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| [{target.ems_ref => VIM_STYLE_COUNTERS}, | ||
| {target.ems_ref => context.ts_values}] | ||
| end | ||
|
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| private | ||
|
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| def target_name | ||
| @target_name ||= begin | ||
| t = target || ems | ||
| "#{t.class.name.demodulize}(#{t.id})" | ||
| end | ||
| end | ||
| end |