Return list of parsed metrics, for autodiscovery.

This commit is contained in:
Stanislav Nikitin 2020-12-23 13:37:52 +05:00
parent 529113a41a
commit 7e90814fde
Signed by: pztrn
GPG Key ID: 1E944A0F0568B550
4 changed files with 41 additions and 11 deletions

View File

@ -1,12 +1,16 @@
package application
import (
"encoding/json"
"go.dev.pztrn.name/metricator/internal/models"
)
// Responds with needed data. First parameter is a type of data needed (like metric name),
// second parameter is actual metric name. Second parameter also can be empty.
func (a *Application) respond(rInfo *models.RequestInfo) string {
// If metric was requested - return only it.
if rInfo.Metric != "" {
metric, err := a.storage.Get(rInfo.Metric)
if err != nil {
return ""
@ -14,3 +18,16 @@ func (a *Application) respond(rInfo *models.RequestInfo) string {
return metric.GetValue()
}
// Otherwise we should get all metrics as slice and return them as string.
// This is needed for metrics autodiscovery.
metrics := a.storage.GetAsSlice()
metricsBytes, err := json.Marshal(metrics)
if err != nil {
// ToDo: log error
return ""
}
return string(metricsBytes)
}

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@ -3,21 +3,21 @@ package models
// Metric is a generic metric structure.
type Metric struct {
// Metric name.
name string
Name string
// HELP data, if present.
description string
Description string
// Additional parameters, data inside "{}".
params []string
Params []string
// Metric value.
value string
Value string
}
// NewMetric creates new structure for storing single metric data.
func NewMetric(name, description string, params []string) Metric {
m := Metric{
name: name,
description: description,
params: params,
Name: name,
Description: description,
Params: params,
}
return m
@ -25,10 +25,10 @@ func NewMetric(name, description string, params []string) Metric {
// GetValue returns metric's value.
func (m *Metric) GetValue() string {
return m.value
return m.Value
}
// SetValue sets value for metric.
func (m *Metric) SetValue(value string) {
m.value = value
m.Value = value
}

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@ -7,6 +7,8 @@ import "go.dev.pztrn.name/metricator/internal/models"
type GenericStorage interface {
// Get returns data from storage by key.
Get(string) (models.Metric, error)
// GetAsSlice returns all data from storage as slice.
GetAsSlice() []models.Metric
// GetDoneChan returns a channel which should be used to block execution
// until storage's routines are completed.
GetDoneChan() chan struct{}

View File

@ -46,6 +46,17 @@ func (s *Storage) Get(key string) (models.Metric, error) {
return data, nil
}
// GetAsSlice returns all data from storage as slice.
func (s *Storage) GetAsSlice() []models.Metric {
metrics := make([]models.Metric, 0, len(s.data))
for _, metric := range s.data {
metrics = append(metrics, metric)
}
return metrics
}
// GetDoneChan returns a channel which should be used to block execution
// until storage's routines are completed.
func (s *Storage) GetDoneChan() chan struct{} {