prometheus

type Config struct {
	// Enabled controls whether enhanced metrics are collected
	Enabled bool `mapstructure:"enabled"`

	// EndpointPatterns configures endpoint pattern matching and grouping
	EndpointPatterns EndpointPatternsConfig `mapstructure:"endpoint_patterns"`

	// CollectSizes enables request/response body size tracking
	CollectSizes bool `mapstructure:"collect_sizes"`

	// CollectQueueTime enables queue time vs processing time breakdown
	CollectQueueTime bool `mapstructure:"collect_queue_time"`

	// CollectWorkerInfo enables worker pool health metrics
	CollectWorkerInfo bool `mapstructure:"collect_worker_info"`

	// DurationBuckets defines histogram buckets for duration metrics (in seconds)
	DurationBuckets []float64 `mapstructure:"duration_buckets"`

	// SizeBuckets defines histogram buckets for size metrics (in bytes)
	SizeBuckets []float64 `mapstructure:"size_buckets"`
}

type Configurer interface {
	// UnmarshalKey reads configuration section into provided structure
	UnmarshalKey(name string, out interface{}) error
	// Has checks if configuration section exists
	Has(name string) bool
}

type EndpointMatcher struct {
	// contains filtered or unexported fields
}

type EndpointPatternsConfig struct {
	// Enabled controls whether endpoint pattern matching is active
	Enabled bool `mapstructure:"enabled"`

	// MaxPatterns limits the number of unique endpoint patterns to prevent cardinality explosion
	MaxPatterns int `mapstructure:"max_patterns"`

	// Rules defines regex patterns for grouping similar endpoints
	Rules []PatternRule `mapstructure:"rules"`

	// CacheSize defines the LRU cache size for pattern matching results
	CacheSize int `mapstructure:"cache_size"`
}

type ErrorType string

type PatternRule struct {
	// Pattern is the regex pattern to match against request paths
	Pattern string `mapstructure:"pattern"`

	// Name is the label value to use when pattern matches
	Name string `mapstructure:"name"`
}

type Plugin struct {
	// contains filtered or unexported fields
}

type WorkerPoolStats struct {
	Active      int
	Idle        int
	Total       int
	UpdatedAt   time.Time
	Utilization float64 // Percentage 0-100
}