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monitor.go
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monitor.go
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package constructors
import (
"context"
"github.com/go-bricks/bricks/v2/monitoring"
"github.com/go-bricks/bricks/v2/interfaces/cfg"
confkeys "github.com/go-bricks/bricks/v2/interfaces/cfg/keys"
"github.com/go-bricks/bricks/v2/interfaces/log"
"github.com/go-bricks/bricks/v2/interfaces/monitor"
"go.uber.org/fx"
)
const (
// FxGroupMonitorContextExtractors defines group name
FxGroupMonitorContextExtractors = "monitorContextExtractors"
)
type monitorDeps struct {
fx.In
LifeCycle fx.Lifecycle
Config cfg.Config
Logger log.Logger
MonitorBuilder monitor.Builder
ContextExtractors []monitor.ContextExtractor `group:"monitorContextExtractors"`
}
// DefaultMonitor is a constructor that will create a Metrics reporter based on values from the Config Map
// such as
//
// - Tags: we will look for default tags using bricks.MonitorTagsKey within the configuration map
func DefaultMonitor(deps monitorDeps) monitor.Metrics {
tags := deps.Config.Get(confkeys.MonitorTags).StringMapString() // can be empty
reporter := monitoring.Builder().SetTags(tags).AddExtractors(deps.ContextExtractors...).DoOnError(func(err error) {
deps.Logger.WithError(err).Custom(nil, log.WarnLevel, 2, "monitoring error")
}).Build(deps.MonitorBuilder)
deps.LifeCycle.Append(fx.Hook{
OnStart: func(ctx context.Context) error {
return reporter.Connect(ctx)
},
OnStop: func(ctx context.Context) error {
return reporter.Close(ctx)
},
})
return reporter.Metrics()
}