/
config.go
59 lines (48 loc) · 2.09 KB
/
config.go
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package config
import (
"context"
"strings"
"github.com/verygoodsoftwarenotvirus/starter/internal/observability/logging"
"github.com/verygoodsoftwarenotvirus/starter/internal/observability/tracing"
"github.com/verygoodsoftwarenotvirus/starter/internal/observability/tracing/cloudtrace"
"github.com/verygoodsoftwarenotvirus/starter/internal/observability/tracing/oteltracehttp"
validation "github.com/go-ozzo/ozzo-validation/v4"
)
const (
// ProviderOtel represents the open source tracing server.
ProviderOtel = "otel"
// ProviderCloudTrace represents the GCP Cloud Trace service.
ProviderCloudTrace = "cloudtrace"
)
type (
// Config contains settings related to tracing.
Config struct {
_ struct{} `json:"-"`
CloudTrace *cloudtrace.Config `json:"cloudTrace,omitempty" toml:"cloud_trace,omitempty"`
Otel *oteltracehttp.Config `json:"otel,omitempty" toml:"otel,omitempty"`
Provider string `json:"provider,omitempty" toml:"provider,omitempty"`
}
)
// ProvideTracerProvider provides an instrumentation handler.
func (c *Config) ProvideTracerProvider(ctx context.Context, l logging.Logger) (traceProvider tracing.TracerProvider, err error) {
logger := l.WithValue("tracing_provider", c.Provider)
p := strings.TrimSpace(strings.ToLower(c.Provider))
switch p {
case ProviderOtel:
return oteltracehttp.SetupOtelHTTP(ctx, c.Otel)
case ProviderCloudTrace:
return cloudtrace.SetupCloudTrace(ctx, c.CloudTrace)
default:
logger.Debug("invalid tracing provider")
return tracing.NewNoopTracerProvider(), nil
}
}
var _ validation.ValidatableWithContext = (*Config)(nil)
// ValidateWithContext validates the config struct.
func (c *Config) ValidateWithContext(ctx context.Context) error {
return validation.ValidateStructWithContext(ctx, c,
validation.Field(&c.Provider, validation.In("", ProviderOtel, ProviderCloudTrace)),
validation.Field(&c.Otel, validation.When(c.Provider == ProviderOtel, validation.Required).Else(validation.Nil)),
validation.Field(&c.CloudTrace, validation.When(c.Provider == ProviderCloudTrace, validation.Required).Else(validation.Nil)),
)
}