Ilia Denisov
722 lines
23 KiB
Go
722 lines
23 KiB
Go
// Package telemetry provides lightweight OpenTelemetry helpers and
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// low-cardinality Game Master instruments used by the runnable skeleton.
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// Later stages emit into the instruments declared here without touching
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// this package.
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package telemetry
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import (
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"context"
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"errors"
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"fmt"
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"log/slog"
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"os"
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"strings"
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"sync"
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"time"
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"go.opentelemetry.io/otel"
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"go.opentelemetry.io/otel/attribute"
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"go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc"
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"go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp"
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"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc"
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"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp"
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"go.opentelemetry.io/otel/exporters/stdout/stdoutmetric"
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"go.opentelemetry.io/otel/exporters/stdout/stdouttrace"
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"go.opentelemetry.io/otel/metric"
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"go.opentelemetry.io/otel/propagation"
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sdkmetric "go.opentelemetry.io/otel/sdk/metric"
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"go.opentelemetry.io/otel/sdk/resource"
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sdktrace "go.opentelemetry.io/otel/sdk/trace"
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oteltrace "go.opentelemetry.io/otel/trace"
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)
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const meterName = "galaxy/gamemaster"
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const (
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defaultServiceName = "galaxy-gamemaster"
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processExporterNone = "none"
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processExporterOTLP = "otlp"
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processProtocolHTTPProtobuf = "http/protobuf"
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processProtocolGRPC = "grpc"
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)
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// ProcessConfig configures the process-wide OpenTelemetry runtime.
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type ProcessConfig struct {
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// ServiceName overrides the default OpenTelemetry service name.
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ServiceName string
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// TracesExporter selects the external traces exporter. Supported values
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// are `none` and `otlp`.
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TracesExporter string
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// MetricsExporter selects the external metrics exporter. Supported
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// values are `none` and `otlp`.
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MetricsExporter string
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// TracesProtocol selects the OTLP traces protocol when TracesExporter is
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// `otlp`.
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TracesProtocol string
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// MetricsProtocol selects the OTLP metrics protocol when
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// MetricsExporter is `otlp`.
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MetricsProtocol string
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// StdoutTracesEnabled enables the additional stdout trace exporter used
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// for local development and debugging.
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StdoutTracesEnabled bool
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// StdoutMetricsEnabled enables the additional stdout metric exporter
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// used for local development and debugging.
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StdoutMetricsEnabled bool
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}
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// Validate reports whether cfg contains a supported OpenTelemetry exporter
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// configuration.
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func (cfg ProcessConfig) Validate() error {
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switch cfg.TracesExporter {
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case processExporterNone, processExporterOTLP:
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default:
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return fmt.Errorf("unsupported traces exporter %q", cfg.TracesExporter)
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}
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switch cfg.MetricsExporter {
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case processExporterNone, processExporterOTLP:
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default:
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return fmt.Errorf("unsupported metrics exporter %q", cfg.MetricsExporter)
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}
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if cfg.TracesProtocol != "" && cfg.TracesProtocol != processProtocolHTTPProtobuf && cfg.TracesProtocol != processProtocolGRPC {
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return fmt.Errorf("unsupported OTLP traces protocol %q", cfg.TracesProtocol)
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}
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if cfg.MetricsProtocol != "" && cfg.MetricsProtocol != processProtocolHTTPProtobuf && cfg.MetricsProtocol != processProtocolGRPC {
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return fmt.Errorf("unsupported OTLP metrics protocol %q", cfg.MetricsProtocol)
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}
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return nil
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}
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// Runtime owns the Game Master OpenTelemetry providers and the
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// low-cardinality custom instruments listed in `gamemaster/README.md`
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// §Observability.
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type Runtime struct {
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tracerProvider oteltrace.TracerProvider
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meterProvider metric.MeterProvider
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meter metric.Meter
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shutdownMu sync.Mutex
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shutdownDone bool
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shutdownErr error
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shutdownFns []func(context.Context) error
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internalHTTPRequests metric.Int64Counter
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internalHTTPDuration metric.Float64Histogram
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registerRuntimeOutcomes metric.Int64Counter
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turnGenerationOutcomes metric.Int64Counter
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commandExecuteOutcomes metric.Int64Counter
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orderPutOutcomes metric.Int64Counter
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reportGetOutcomes metric.Int64Counter
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banishOutcomes metric.Int64Counter
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healthEventsConsumed metric.Int64Counter
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lobbyEventsPublished metric.Int64Counter
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notificationPublishAttempts metric.Int64Counter
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membershipCacheHits metric.Int64Counter
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engineCallLatency metric.Float64Histogram
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runtimeRecordsByStatus metric.Int64ObservableGauge
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schedulerDueGames metric.Int64ObservableGauge
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engineVersionsTotal metric.Int64ObservableGauge
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gaugeMu sync.Mutex
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gaugeRegistration metric.Registration
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}
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// NewWithProviders constructs a telemetry runtime around explicitly supplied
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// meterProvider and tracerProvider values.
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func NewWithProviders(meterProvider metric.MeterProvider, tracerProvider oteltrace.TracerProvider) (*Runtime, error) {
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if meterProvider == nil {
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meterProvider = otel.GetMeterProvider()
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}
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if tracerProvider == nil {
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tracerProvider = otel.GetTracerProvider()
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}
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if meterProvider == nil {
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return nil, errors.New("new gamemaster telemetry runtime: nil meter provider")
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}
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if tracerProvider == nil {
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return nil, errors.New("new gamemaster telemetry runtime: nil tracer provider")
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}
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return buildRuntime(meterProvider, tracerProvider, nil)
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}
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// NewProcess constructs the process-wide Game Master OpenTelemetry runtime
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// from cfg, installs the resulting providers globally, and returns the
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// runtime.
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func NewProcess(ctx context.Context, cfg ProcessConfig, logger *slog.Logger) (*Runtime, error) {
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if ctx == nil {
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return nil, errors.New("new gamemaster telemetry process: nil context")
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}
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if err := cfg.Validate(); err != nil {
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return nil, fmt.Errorf("new gamemaster telemetry process: %w", err)
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}
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if logger == nil {
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logger = slog.Default()
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}
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serviceName := strings.TrimSpace(cfg.ServiceName)
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if serviceName == "" {
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serviceName = defaultServiceName
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}
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res := resource.NewSchemaless(attribute.String("service.name", serviceName))
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tracerProvider, err := newTracerProvider(ctx, res, cfg)
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if err != nil {
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return nil, fmt.Errorf("new gamemaster telemetry process: tracer provider: %w", err)
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}
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meterProvider, err := newMeterProvider(ctx, res, cfg)
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if err != nil {
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return nil, fmt.Errorf("new gamemaster telemetry process: meter provider: %w", err)
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}
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otel.SetTracerProvider(tracerProvider)
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otel.SetMeterProvider(meterProvider)
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otel.SetTextMapPropagator(propagation.NewCompositeTextMapPropagator(
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propagation.TraceContext{},
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propagation.Baggage{},
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))
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runtime, err := buildRuntime(meterProvider, tracerProvider, []func(context.Context) error{
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meterProvider.Shutdown,
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tracerProvider.Shutdown,
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})
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if err != nil {
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return nil, fmt.Errorf("new gamemaster telemetry process: runtime: %w", err)
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}
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logger.Info("gamemaster telemetry configured",
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"service_name", serviceName,
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"traces_exporter", cfg.TracesExporter,
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"metrics_exporter", cfg.MetricsExporter,
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)
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return runtime, nil
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}
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// TracerProvider returns the runtime tracer provider.
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func (runtime *Runtime) TracerProvider() oteltrace.TracerProvider {
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if runtime == nil || runtime.tracerProvider == nil {
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return otel.GetTracerProvider()
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}
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return runtime.tracerProvider
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}
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// MeterProvider returns the runtime meter provider.
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func (runtime *Runtime) MeterProvider() metric.MeterProvider {
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if runtime == nil || runtime.meterProvider == nil {
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return otel.GetMeterProvider()
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}
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return runtime.meterProvider
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}
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// Shutdown flushes and stops the configured telemetry providers. Shutdown
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// is idempotent.
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func (runtime *Runtime) Shutdown(ctx context.Context) error {
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if runtime == nil {
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return nil
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}
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runtime.shutdownMu.Lock()
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if runtime.shutdownDone {
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err := runtime.shutdownErr
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runtime.shutdownMu.Unlock()
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return err
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}
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runtime.shutdownDone = true
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runtime.shutdownMu.Unlock()
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runtime.gaugeMu.Lock()
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if runtime.gaugeRegistration != nil {
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_ = runtime.gaugeRegistration.Unregister()
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runtime.gaugeRegistration = nil
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}
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runtime.gaugeMu.Unlock()
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var shutdownErr error
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for index := len(runtime.shutdownFns) - 1; index >= 0; index-- {
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shutdownErr = errors.Join(shutdownErr, runtime.shutdownFns[index](ctx))
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}
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runtime.shutdownMu.Lock()
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runtime.shutdownErr = shutdownErr
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runtime.shutdownMu.Unlock()
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return shutdownErr
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}
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// RecordInternalHTTPRequest records one internal HTTP request outcome.
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func (runtime *Runtime) RecordInternalHTTPRequest(ctx context.Context, attrs []attribute.KeyValue, duration time.Duration) {
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if runtime == nil {
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return
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}
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options := metric.WithAttributes(attrs...)
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runtime.internalHTTPRequests.Add(normalizeContext(ctx), 1, options)
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runtime.internalHTTPDuration.Record(normalizeContext(ctx), duration.Seconds()*1000, options)
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}
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// RecordRegisterRuntimeOutcome records one terminal outcome of the
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// register-runtime operation.
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func (runtime *Runtime) RecordRegisterRuntimeOutcome(ctx context.Context, outcome, errorCode string) {
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if runtime == nil || runtime.registerRuntimeOutcomes == nil {
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return
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}
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runtime.registerRuntimeOutcomes.Add(normalizeContext(ctx), 1, metric.WithAttributes(
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attribute.String("outcome", outcome),
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attribute.String("error_code", errorCode),
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))
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}
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// RecordTurnGenerationOutcome records one terminal outcome of a turn
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// generation. trigger is `scheduler` or `force`.
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func (runtime *Runtime) RecordTurnGenerationOutcome(ctx context.Context, outcome, errorCode, trigger string) {
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if runtime == nil || runtime.turnGenerationOutcomes == nil {
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return
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}
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runtime.turnGenerationOutcomes.Add(normalizeContext(ctx), 1, metric.WithAttributes(
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attribute.String("outcome", outcome),
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attribute.String("error_code", errorCode),
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attribute.String("trigger", trigger),
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))
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}
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// RecordCommandExecuteOutcome records one terminal outcome of a command
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// execute call.
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func (runtime *Runtime) RecordCommandExecuteOutcome(ctx context.Context, outcome, errorCode string) {
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if runtime == nil || runtime.commandExecuteOutcomes == nil {
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return
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}
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runtime.commandExecuteOutcomes.Add(normalizeContext(ctx), 1, metric.WithAttributes(
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attribute.String("outcome", outcome),
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attribute.String("error_code", errorCode),
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))
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}
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// RecordOrderPutOutcome records one terminal outcome of an order put call.
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func (runtime *Runtime) RecordOrderPutOutcome(ctx context.Context, outcome, errorCode string) {
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if runtime == nil || runtime.orderPutOutcomes == nil {
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return
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}
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runtime.orderPutOutcomes.Add(normalizeContext(ctx), 1, metric.WithAttributes(
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attribute.String("outcome", outcome),
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attribute.String("error_code", errorCode),
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))
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}
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// RecordReportGetOutcome records one terminal outcome of a report get
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// call.
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func (runtime *Runtime) RecordReportGetOutcome(ctx context.Context, outcome, errorCode string) {
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if runtime == nil || runtime.reportGetOutcomes == nil {
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return
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}
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runtime.reportGetOutcomes.Add(normalizeContext(ctx), 1, metric.WithAttributes(
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attribute.String("outcome", outcome),
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attribute.String("error_code", errorCode),
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))
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}
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// RecordBanishOutcome records one terminal outcome of a banish call.
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func (runtime *Runtime) RecordBanishOutcome(ctx context.Context, outcome, errorCode string) {
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if runtime == nil || runtime.banishOutcomes == nil {
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return
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}
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runtime.banishOutcomes.Add(normalizeContext(ctx), 1, metric.WithAttributes(
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attribute.String("outcome", outcome),
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attribute.String("error_code", errorCode),
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))
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}
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// RecordHealthEventConsumed records one consumed `runtime:health_events`
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// entry.
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func (runtime *Runtime) RecordHealthEventConsumed(ctx context.Context) {
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if runtime == nil || runtime.healthEventsConsumed == nil {
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return
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}
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runtime.healthEventsConsumed.Add(normalizeContext(ctx), 1)
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}
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// RecordLobbyEventPublished records one publication on `gm:lobby_events`.
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// eventType is `runtime_snapshot_update` or `game_finished`.
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func (runtime *Runtime) RecordLobbyEventPublished(ctx context.Context, eventType string) {
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if runtime == nil || runtime.lobbyEventsPublished == nil {
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return
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}
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runtime.lobbyEventsPublished.Add(normalizeContext(ctx), 1, metric.WithAttributes(
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attribute.String("event_type", eventType),
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))
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}
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// RecordNotificationPublishAttempt records one publication attempt to
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// `notification:intents`. result is `ok` or `error`.
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func (runtime *Runtime) RecordNotificationPublishAttempt(ctx context.Context, notificationType, result string) {
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if runtime == nil || runtime.notificationPublishAttempts == nil {
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return
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}
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runtime.notificationPublishAttempts.Add(normalizeContext(ctx), 1, metric.WithAttributes(
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attribute.String("notification_type", notificationType),
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attribute.String("result", result),
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))
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}
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// RecordMembershipCacheResult records one membership cache lookup outcome.
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// result is `hit`, `miss`, or `invalidate`.
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func (runtime *Runtime) RecordMembershipCacheResult(ctx context.Context, result string) {
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if runtime == nil || runtime.membershipCacheHits == nil {
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return
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}
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runtime.membershipCacheHits.Add(normalizeContext(ctx), 1, metric.WithAttributes(
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attribute.String("result", result),
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))
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}
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// RecordEngineCall records the wall-clock duration of one engine HTTP
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// call. op is one of `init`, `status`, `turn`, `banish`, `command`,
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// `order`, `report`.
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func (runtime *Runtime) RecordEngineCall(ctx context.Context, op string, duration time.Duration) {
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if runtime == nil || runtime.engineCallLatency == nil {
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return
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}
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runtime.engineCallLatency.Record(normalizeContext(ctx), duration.Seconds()*1000, metric.WithAttributes(
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attribute.String("op", op),
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))
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}
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// RuntimeRecordsByStatusProbe reports the number of `runtime_records`
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// rows per status. The production probe wraps the runtime record store;
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// tests may pass a stub.
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type RuntimeRecordsByStatusProbe interface {
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CountByStatus(ctx context.Context) (map[string]int, error)
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}
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// SchedulerDueGamesProbe reports how many runtime records are currently
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// due for a scheduler-driven turn generation.
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type SchedulerDueGamesProbe interface {
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CountDue(ctx context.Context) (int, error)
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}
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// EngineVersionsTotalProbe reports how many engine_versions rows are
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// registered.
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type EngineVersionsTotalProbe interface {
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CountVersions(ctx context.Context) (int, error)
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}
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// GaugeDependencies groups the collaborators required by RegisterGauges.
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type GaugeDependencies struct {
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// RuntimeRecordsByStatus probes the per-status row count for
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// `gamemaster.runtime_records_by_status`.
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RuntimeRecordsByStatus RuntimeRecordsByStatusProbe
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// SchedulerDueGames probes the due-now count for
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// `gamemaster.scheduler.due_games`.
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SchedulerDueGames SchedulerDueGamesProbe
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// EngineVersionsTotal probes the engine_versions row count for
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// `gamemaster.engine_versions_total`.
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EngineVersionsTotal EngineVersionsTotalProbe
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// Logger records non-fatal probe errors. Defaults to slog.Default
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// when nil.
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Logger *slog.Logger
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}
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// RegisterGauges installs the observable-gauge callback that reports
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// `gamemaster.runtime_records_by_status`,
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// `gamemaster.scheduler.due_games`, and
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// `gamemaster.engine_versions_total`. It is safe to call once per
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// Runtime; a second call replaces the previous registration. The runtime
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// keeps no strong reference to deps beyond the callback closure.
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//
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// The wiring layer registers the gauges once the persistence adapters
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// and scheduler probe are constructed.
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func (runtime *Runtime) RegisterGauges(deps GaugeDependencies) error {
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if runtime == nil {
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return errors.New("register gamemaster gauges: nil runtime")
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}
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if deps.RuntimeRecordsByStatus == nil {
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return errors.New("register gamemaster gauges: nil runtime records probe")
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}
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if deps.SchedulerDueGames == nil {
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return errors.New("register gamemaster gauges: nil scheduler probe")
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}
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if deps.EngineVersionsTotal == nil {
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return errors.New("register gamemaster gauges: nil engine versions probe")
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}
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logger := deps.Logger
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if logger == nil {
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logger = slog.Default()
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}
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runtime.gaugeMu.Lock()
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defer runtime.gaugeMu.Unlock()
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if runtime.gaugeRegistration != nil {
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_ = runtime.gaugeRegistration.Unregister()
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runtime.gaugeRegistration = nil
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}
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callback := func(ctx context.Context, observer metric.Observer) error {
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if counts, err := deps.RuntimeRecordsByStatus.CountByStatus(ctx); err != nil {
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logger.WarnContext(ctx, "runtime records probe failed",
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"err", err.Error(),
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)
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} else {
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for status, count := range counts {
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observer.ObserveInt64(runtime.runtimeRecordsByStatus, int64(count), metric.WithAttributes(
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attribute.String("status", status),
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))
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}
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}
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if due, err := deps.SchedulerDueGames.CountDue(ctx); err != nil {
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logger.WarnContext(ctx, "scheduler due games probe failed",
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"err", err.Error(),
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)
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} else {
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observer.ObserveInt64(runtime.schedulerDueGames, int64(due))
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}
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if versions, err := deps.EngineVersionsTotal.CountVersions(ctx); err != nil {
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logger.WarnContext(ctx, "engine versions probe failed",
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"err", err.Error(),
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)
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} else {
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observer.ObserveInt64(runtime.engineVersionsTotal, int64(versions))
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}
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return nil
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}
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registration, err := runtime.meter.RegisterCallback(callback,
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runtime.runtimeRecordsByStatus,
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runtime.schedulerDueGames,
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runtime.engineVersionsTotal,
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)
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if err != nil {
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return fmt.Errorf("register gamemaster gauges: %w", err)
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}
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runtime.gaugeRegistration = registration
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return nil
|
|
}
|
|
|
|
func buildRuntime(meterProvider metric.MeterProvider, tracerProvider oteltrace.TracerProvider, shutdownFns []func(context.Context) error) (*Runtime, error) {
|
|
meter := meterProvider.Meter(meterName)
|
|
runtime := &Runtime{
|
|
tracerProvider: tracerProvider,
|
|
meterProvider: meterProvider,
|
|
meter: meter,
|
|
shutdownFns: append([]func(context.Context) error(nil), shutdownFns...),
|
|
}
|
|
|
|
internalHTTPRequests, err := meter.Int64Counter("gamemaster.internal_http.requests")
|
|
if err != nil {
|
|
return nil, fmt.Errorf("build gamemaster telemetry runtime: internal_http.requests: %w", err)
|
|
}
|
|
internalHTTPDuration, err := meter.Float64Histogram("gamemaster.internal_http.duration", metric.WithUnit("ms"))
|
|
if err != nil {
|
|
return nil, fmt.Errorf("build gamemaster telemetry runtime: internal_http.duration: %w", err)
|
|
}
|
|
runtime.internalHTTPRequests = internalHTTPRequests
|
|
runtime.internalHTTPDuration = internalHTTPDuration
|
|
|
|
if err := registerCounters(meter, runtime); err != nil {
|
|
return nil, err
|
|
}
|
|
if err := registerHistograms(meter, runtime); err != nil {
|
|
return nil, err
|
|
}
|
|
if err := registerObservableGauges(meter, runtime); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return runtime, nil
|
|
}
|
|
|
|
func registerCounters(meter metric.Meter, runtime *Runtime) error {
|
|
specs := []struct {
|
|
name string
|
|
target *metric.Int64Counter
|
|
}{
|
|
{"gamemaster.register_runtime.outcomes", &runtime.registerRuntimeOutcomes},
|
|
{"gamemaster.turn_generation.outcomes", &runtime.turnGenerationOutcomes},
|
|
{"gamemaster.command_execute.outcomes", &runtime.commandExecuteOutcomes},
|
|
{"gamemaster.order_put.outcomes", &runtime.orderPutOutcomes},
|
|
{"gamemaster.report_get.outcomes", &runtime.reportGetOutcomes},
|
|
{"gamemaster.banish.outcomes", &runtime.banishOutcomes},
|
|
{"gamemaster.health_events.consumed", &runtime.healthEventsConsumed},
|
|
{"gamemaster.lobby_events.published", &runtime.lobbyEventsPublished},
|
|
{"gamemaster.notification.publish_attempts", &runtime.notificationPublishAttempts},
|
|
{"gamemaster.membership_cache.hits", &runtime.membershipCacheHits},
|
|
}
|
|
for _, spec := range specs {
|
|
counter, err := meter.Int64Counter(spec.name)
|
|
if err != nil {
|
|
return fmt.Errorf("build gamemaster telemetry runtime: %s: %w", spec.name, err)
|
|
}
|
|
*spec.target = counter
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func registerHistograms(meter metric.Meter, runtime *Runtime) error {
|
|
specs := []struct {
|
|
name string
|
|
unit string
|
|
target *metric.Float64Histogram
|
|
}{
|
|
{"gamemaster.engine_call.latency", "ms", &runtime.engineCallLatency},
|
|
}
|
|
for _, spec := range specs {
|
|
options := []metric.Float64HistogramOption{}
|
|
if spec.unit != "" {
|
|
options = append(options, metric.WithUnit(spec.unit))
|
|
}
|
|
histogram, err := meter.Float64Histogram(spec.name, options...)
|
|
if err != nil {
|
|
return fmt.Errorf("build gamemaster telemetry runtime: %s: %w", spec.name, err)
|
|
}
|
|
*spec.target = histogram
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func registerObservableGauges(meter metric.Meter, runtime *Runtime) error {
|
|
gauge, err := meter.Int64ObservableGauge("gamemaster.runtime_records_by_status")
|
|
if err != nil {
|
|
return fmt.Errorf("build gamemaster telemetry runtime: runtime_records_by_status: %w", err)
|
|
}
|
|
runtime.runtimeRecordsByStatus = gauge
|
|
|
|
due, err := meter.Int64ObservableGauge("gamemaster.scheduler.due_games")
|
|
if err != nil {
|
|
return fmt.Errorf("build gamemaster telemetry runtime: scheduler.due_games: %w", err)
|
|
}
|
|
runtime.schedulerDueGames = due
|
|
|
|
versions, err := meter.Int64ObservableGauge("gamemaster.engine_versions_total")
|
|
if err != nil {
|
|
return fmt.Errorf("build gamemaster telemetry runtime: engine_versions_total: %w", err)
|
|
}
|
|
runtime.engineVersionsTotal = versions
|
|
|
|
return nil
|
|
}
|
|
|
|
func newTracerProvider(ctx context.Context, res *resource.Resource, cfg ProcessConfig) (*sdktrace.TracerProvider, error) {
|
|
options := []sdktrace.TracerProviderOption{
|
|
sdktrace.WithResource(res),
|
|
}
|
|
|
|
if exporter, err := traceExporter(ctx, cfg); err != nil {
|
|
return nil, err
|
|
} else if exporter != nil {
|
|
options = append(options, sdktrace.WithBatcher(exporter))
|
|
}
|
|
|
|
if cfg.StdoutTracesEnabled {
|
|
exporter, err := stdouttrace.New(stdouttrace.WithWriter(os.Stdout))
|
|
if err != nil {
|
|
return nil, fmt.Errorf("stdout traces exporter: %w", err)
|
|
}
|
|
options = append(options, sdktrace.WithBatcher(exporter))
|
|
}
|
|
|
|
return sdktrace.NewTracerProvider(options...), nil
|
|
}
|
|
|
|
func newMeterProvider(ctx context.Context, res *resource.Resource, cfg ProcessConfig) (*sdkmetric.MeterProvider, error) {
|
|
options := []sdkmetric.Option{
|
|
sdkmetric.WithResource(res),
|
|
}
|
|
|
|
if exporter, err := metricExporter(ctx, cfg); err != nil {
|
|
return nil, err
|
|
} else if exporter != nil {
|
|
options = append(options, sdkmetric.WithReader(sdkmetric.NewPeriodicReader(exporter)))
|
|
}
|
|
|
|
if cfg.StdoutMetricsEnabled {
|
|
exporter, err := stdoutmetric.New(stdoutmetric.WithWriter(os.Stdout))
|
|
if err != nil {
|
|
return nil, fmt.Errorf("stdout metrics exporter: %w", err)
|
|
}
|
|
options = append(options, sdkmetric.WithReader(sdkmetric.NewPeriodicReader(exporter)))
|
|
}
|
|
|
|
return sdkmetric.NewMeterProvider(options...), nil
|
|
}
|
|
|
|
func traceExporter(ctx context.Context, cfg ProcessConfig) (sdktrace.SpanExporter, error) {
|
|
if cfg.TracesExporter != processExporterOTLP {
|
|
return nil, nil
|
|
}
|
|
|
|
switch normalizeProtocol(cfg.TracesProtocol) {
|
|
case processProtocolGRPC:
|
|
exporter, err := otlptracegrpc.New(ctx)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("otlp grpc traces exporter: %w", err)
|
|
}
|
|
return exporter, nil
|
|
default:
|
|
exporter, err := otlptracehttp.New(ctx)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("otlp http traces exporter: %w", err)
|
|
}
|
|
return exporter, nil
|
|
}
|
|
}
|
|
|
|
func metricExporter(ctx context.Context, cfg ProcessConfig) (sdkmetric.Exporter, error) {
|
|
if cfg.MetricsExporter != processExporterOTLP {
|
|
return nil, nil
|
|
}
|
|
|
|
switch normalizeProtocol(cfg.MetricsProtocol) {
|
|
case processProtocolGRPC:
|
|
exporter, err := otlpmetricgrpc.New(ctx)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("otlp grpc metrics exporter: %w", err)
|
|
}
|
|
return exporter, nil
|
|
default:
|
|
exporter, err := otlpmetrichttp.New(ctx)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("otlp http metrics exporter: %w", err)
|
|
}
|
|
return exporter, nil
|
|
}
|
|
}
|
|
|
|
func normalizeProtocol(value string) string {
|
|
switch strings.TrimSpace(value) {
|
|
case processProtocolGRPC:
|
|
return processProtocolGRPC
|
|
default:
|
|
return processProtocolHTTPProtobuf
|
|
}
|
|
}
|
|
|
|
func normalizeContext(ctx context.Context) context.Context {
|
|
if ctx == nil {
|
|
return context.Background()
|
|
}
|
|
|
|
return ctx
|
|
}
|