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Simplify cache, calculate with expr

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This commit is contained in:
Thomas Gruber
2026-07-31 16:31:04 +02:00
parent 789ba7f4a5
commit 4c1f810f53
7 changed files with 744 additions and 114 deletions
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internal/metricRouter/metricRouter.go
+14 -14
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@@ -35,19 +35,19 @@ type metricRouterTagConfig struct {
// Metric router configuration
type metricRouterConfig struct {
HostnameTagName string `json:"hostname_tag"` // Key name used when adding the hostname to a metric (default 'hostname')
AddTags []metricRouterTagConfig `json:"add_tags"` // List of tags that are added when the condition is met
DelTags []metricRouterTagConfig `json:"delete_tags"` // List of tags that are removed when the condition is met
IntervalAgg []agg.MetricAggregatorIntervalConfig `json:"interval_aggregates"` // List of aggregation function processed at the end of an interval
DropMetrics []string `json:"drop_metrics"` // List of metric names to drop. For fine-grained dropping use drop_metrics_if
DropMetricsIf []string `json:"drop_metrics_if"` // List of evaluatable terms to drop metrics
RenameMetrics map[string]string `json:"rename_metrics"` // Map to rename metric name from key to value
IntervalStamp bool `json:"interval_timestamp"` // Update timestamp periodically by ticker each interval?
NumCacheIntervals int `json:"num_cache_intervals"` // Number of intervals of cached metrics for evaluation
MaxForward int `json:"max_forward"` // Number of maximal forwarded metrics at one select
NormalizeUnits bool `json:"normalize_units"` // Check unit meta flag and normalize it using cc-units
ChangeUnitPrefix map[string]string `json:"change_unit_prefix"` // Add prefix that should be applied to the metrics
MessageProcessor json.RawMessage `json:"process_messages,omitempty"`
HostnameTagName string `json:"hostname_tag"` // Key name used when adding the hostname to a metric (default 'hostname')
AddTags []metricRouterTagConfig `json:"add_tags"` // List of tags that are added when the condition is met
DelTags []metricRouterTagConfig `json:"delete_tags"` // List of tags that are removed when the condition is met
IntervalAgg []agg.MetricAggregatorExprIntervalConfig `json:"interval_aggregates"` // List of aggregation function processed at the end of an interval
DropMetrics []string `json:"drop_metrics"` // List of metric names to drop. For fine-grained dropping use drop_metrics_if
DropMetricsIf []string `json:"drop_metrics_if"` // List of evaluatable terms to drop metrics
RenameMetrics map[string]string `json:"rename_metrics"` // Map to rename metric name from key to value
IntervalStamp bool `json:"interval_timestamp"` // Update timestamp periodically by ticker each interval?
NumCacheIntervals int `json:"num_cache_intervals"` // Number of intervals of cached metrics for evaluation
MaxForward int `json:"max_forward"` // Number of maximal forwarded metrics at one select
NormalizeUnits bool `json:"normalize_units"` // Check unit meta flag and normalize it using cc-units
ChangeUnitPrefix map[string]string `json:"change_unit_prefix"` // Add prefix that should be applied to the metrics
MessageProcessor json.RawMessage `json:"process_messages,omitempty"`
}
// Metric router data structure
@@ -253,7 +253,7 @@ func (r *metricRouter) Start() {
}
// even if the metric is dropped, it is stored in the cache for
// aggregations
if r.config.NumCacheIntervals > 0 {
if r.config.NumCacheIntervals > 0 && m != nil {
r.cache.Add(m)
}
}