import MetricsReducer from 'devapt-core-server/js/metrics/base/metrics_reducer.js'

public class | source

MetricsReducer

Direct Subclass:

MetricHttpReducer, MetricsBusReducer, MetricsHostReducer, MetricsNodeReducer

Reducer class for HTTP metrics collect.

Constructor Summary

Public Constructor
public	constructor(arg_metrics_name: string): nothing Reducer for metrics class.

Member Summary

Public Members
public	is_metrics_reducer: boolean Class test flag.
public	name: string Metrics series name.

Method Summary

Public Methods
public	create_state(): MetricsState Create a new state instance.
public	incr(arg_state_values: object, arg_state_key: string, arg_metrics_values_key: string): MetricsState Increment a state value.
public	reduce(arg_state: MetricsState, arg_metrics_values: object \| array): object Reduce metrics records to a state.
public	reduce_one_record(arg_state_values: object, arg_metrics_values: object, arg_state: MetricsState): object Reduce metrics records into a state.

Public Constructors

public constructor(arg_metrics_name: string): nothing source

Reducer for metrics class.

Params:

Name	Type	Attribute	Description
arg_metrics_name	string		metrics series name ('http', 'host'...)

Return:

nothing

Public Members

public is_metrics_reducer: boolean source

Class test flag.

public name: string source

Metrics series name.

Public Methods

public create_state(): MetricsState source

Create a new state instance.

Return:

MetricsState

a new metrics state instance.

public incr(arg_state_values: object, arg_state_key: string, arg_metrics_values_key: string): MetricsState source

Increment a state value.

Params:

Name	Type	Attribute	Description
arg_state_values	object		values map object.
arg_state_key	string		metrics state values.
arg_metrics_values_key	string		metrics values key.

Return:

MetricsState

a new metrics state instance.

public reduce(arg_state: MetricsState, arg_metrics_values: object | array): object source

Reduce metrics records to a state.

Params:

Name	Type	Attribute	Description
arg_state	MetricsState		metrics state.
arg_metrics_values	object \| array		metrics records values.

Return:

object

metrics state values.

public reduce_one_record(arg_state_values: object, arg_metrics_values: object, arg_state: MetricsState): object source

Reduce metrics records into a state.

Params:

Name	Type	Attribute	Description
arg_state_values	object		metrics state values.
arg_metrics_values	object		metrics records values.
arg_state	MetricsState		metrics state.

Return:

object

metrics state values.