Initial commit

api/openapi/oas_cfg_gen.go

@@ -0,0 +1,277 @@
+// Code generated by ogen, DO NOT EDIT.
+
+package openapi
+
+import (
+	"net/http"
+
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/metric"
+	"go.opentelemetry.io/otel/metric/instrument"
+	"go.opentelemetry.io/otel/trace"
+
+	ht "github.com/ogen-go/ogen/http"
+	"github.com/ogen-go/ogen/middleware"
+	"github.com/ogen-go/ogen/ogenerrors"
+	"github.com/ogen-go/ogen/otelogen"
+)
+
+var (
+	// Allocate option closure once.
+	clientSpanKind = trace.WithSpanKind(trace.SpanKindClient)
+	// Allocate option closure once.
+	serverSpanKind = trace.WithSpanKind(trace.SpanKindServer)
+)
+
+type (
+	optionFunc[C any] func(*C)
+	otelOptionFunc    func(*otelConfig)
+)
+
+type otelConfig struct {
+	TracerProvider trace.TracerProvider
+	Tracer         trace.Tracer
+	MeterProvider  metric.MeterProvider
+	Meter          metric.Meter
+}
+
+func (cfg *otelConfig) initOTEL() {
+	if cfg.TracerProvider == nil {
+		cfg.TracerProvider = otel.GetTracerProvider()
+	}
+	if cfg.MeterProvider == nil {
+		cfg.MeterProvider = metric.NewNoopMeterProvider()
+	}
+	cfg.Tracer = cfg.TracerProvider.Tracer(otelogen.Name,
+		trace.WithInstrumentationVersion(otelogen.SemVersion()),
+	)
+	cfg.Meter = cfg.MeterProvider.Meter(otelogen.Name)
+}
+
+// ErrorHandler is error handler.
+type ErrorHandler = ogenerrors.ErrorHandler
+
+type serverConfig struct {
+	otelConfig
+	NotFound           http.HandlerFunc
+	MethodNotAllowed   func(w http.ResponseWriter, r *http.Request, allowed string)
+	ErrorHandler       ErrorHandler
+	Prefix             string
+	Middleware         Middleware
+	MaxMultipartMemory int64
+}
+
+// ServerOption is server config option.
+type ServerOption interface {
+	applyServer(*serverConfig)
+}
+
+var _ = []ServerOption{
+	(optionFunc[serverConfig])(nil),
+	(otelOptionFunc)(nil),
+}
+
+func (o optionFunc[C]) applyServer(c *C) {
+	o(c)
+}
+
+func (o otelOptionFunc) applyServer(c *serverConfig) {
+	o(&c.otelConfig)
+}
+
+func newServerConfig(opts ...ServerOption) serverConfig {
+	cfg := serverConfig{
+		NotFound: http.NotFound,
+		MethodNotAllowed: func(w http.ResponseWriter, r *http.Request, allowed string) {
+			w.Header().Set("Allow", allowed)
+			w.WriteHeader(http.StatusMethodNotAllowed)
+		},
+		ErrorHandler:       ogenerrors.DefaultErrorHandler,
+		Middleware:         nil,
+		MaxMultipartMemory: 32 << 20, // 32 MB
+	}
+	for _, opt := range opts {
+		opt.applyServer(&cfg)
+	}
+	cfg.initOTEL()
+	return cfg
+}
+
+type baseServer struct {
+	cfg      serverConfig
+	requests instrument.Int64Counter
+	errors   instrument.Int64Counter
+	duration instrument.Int64Histogram
+}
+
+func (s baseServer) notFound(w http.ResponseWriter, r *http.Request) {
+	s.cfg.NotFound(w, r)
+}
+
+func (s baseServer) notAllowed(w http.ResponseWriter, r *http.Request, allowed string) {
+	s.cfg.MethodNotAllowed(w, r, allowed)
+}
+
+func (cfg serverConfig) baseServer() (s baseServer, err error) {
+	s = baseServer{cfg: cfg}
+	if s.requests, err = s.cfg.Meter.Int64Counter(otelogen.ServerRequestCount); err != nil {
+		return s, err
+	}
+	if s.errors, err = s.cfg.Meter.Int64Counter(otelogen.ServerErrorsCount); err != nil {
+		return s, err
+	}
+	if s.duration, err = s.cfg.Meter.Int64Histogram(otelogen.ServerDuration); err != nil {
+		return s, err
+	}
+	return s, nil
+}
+
+type clientConfig struct {
+	otelConfig
+	Client ht.Client
+}
+
+// ClientOption is client config option.
+type ClientOption interface {
+	applyClient(*clientConfig)
+}
+
+var _ = []ClientOption{
+	(optionFunc[clientConfig])(nil),
+	(otelOptionFunc)(nil),
+}
+
+func (o optionFunc[C]) applyClient(c *C) {
+	o(c)
+}
+
+func (o otelOptionFunc) applyClient(c *clientConfig) {
+	o(&c.otelConfig)
+}
+
+func newClientConfig(opts ...ClientOption) clientConfig {
+	cfg := clientConfig{
+		Client: http.DefaultClient,
+	}
+	for _, opt := range opts {
+		opt.applyClient(&cfg)
+	}
+	cfg.initOTEL()
+	return cfg
+}
+
+type baseClient struct {
+	cfg      clientConfig
+	requests instrument.Int64Counter
+	errors   instrument.Int64Counter
+	duration instrument.Int64Histogram
+}
+
+func (cfg clientConfig) baseClient() (c baseClient, err error) {
+	c = baseClient{cfg: cfg}
+	if c.requests, err = c.cfg.Meter.Int64Counter(otelogen.ClientRequestCount); err != nil {
+		return c, err
+	}
+	if c.errors, err = c.cfg.Meter.Int64Counter(otelogen.ClientErrorsCount); err != nil {
+		return c, err
+	}
+	if c.duration, err = c.cfg.Meter.Int64Histogram(otelogen.ClientDuration); err != nil {
+		return c, err
+	}
+	return c, nil
+}
+
+// Option is config option.
+type Option interface {
+	ServerOption
+	ClientOption
+}
+
+// WithTracerProvider specifies a tracer provider to use for creating a tracer.
+//
+// If none is specified, the global provider is used.
+func WithTracerProvider(provider trace.TracerProvider) Option {
+	return otelOptionFunc(func(cfg *otelConfig) {
+		if provider != nil {
+			cfg.TracerProvider = provider
+		}
+	})
+}
+
+// WithMeterProvider specifies a meter provider to use for creating a meter.
+//
+// If none is specified, the metric.NewNoopMeterProvider is used.
+func WithMeterProvider(provider metric.MeterProvider) Option {
+	return otelOptionFunc(func(cfg *otelConfig) {
+		if provider != nil {
+			cfg.MeterProvider = provider
+		}
+	})
+}
+
+// WithClient specifies http client to use.
+func WithClient(client ht.Client) ClientOption {
+	return optionFunc[clientConfig](func(cfg *clientConfig) {
+		if client != nil {
+			cfg.Client = client
+		}
+	})
+}
+
+// WithNotFound specifies Not Found handler to use.
+func WithNotFound(notFound http.HandlerFunc) ServerOption {
+	return optionFunc[serverConfig](func(cfg *serverConfig) {
+		if notFound != nil {
+			cfg.NotFound = notFound
+		}
+	})
+}
+
+// WithMethodNotAllowed specifies Method Not Allowed handler to use.
+func WithMethodNotAllowed(methodNotAllowed func(w http.ResponseWriter, r *http.Request, allowed string)) ServerOption {
+	return optionFunc[serverConfig](func(cfg *serverConfig) {
+		if methodNotAllowed != nil {
+			cfg.MethodNotAllowed = methodNotAllowed
+		}
+	})
+}
+
+// WithErrorHandler specifies error handler to use.
+func WithErrorHandler(h ErrorHandler) ServerOption {
+	return optionFunc[serverConfig](func(cfg *serverConfig) {
+		if h != nil {
+			cfg.ErrorHandler = h
+		}
+	})
+}
+
+// WithPathPrefix specifies server path prefix.
+func WithPathPrefix(prefix string) ServerOption {
+	return optionFunc[serverConfig](func(cfg *serverConfig) {
+		cfg.Prefix = prefix
+	})
+}
+
+// WithMiddleware specifies middlewares to use.
+func WithMiddleware(m ...Middleware) ServerOption {
+	return optionFunc[serverConfig](func(cfg *serverConfig) {
+		switch len(m) {
+		case 0:
+			cfg.Middleware = nil
+		case 1:
+			cfg.Middleware = m[0]
+		default:
+			cfg.Middleware = middleware.ChainMiddlewares(m...)
+		}
+	})
+}
+
+// WithMaxMultipartMemory specifies limit of memory for storing file parts.
+// File parts which can't be stored in memory will be stored on disk in temporary files.
+func WithMaxMultipartMemory(max int64) ServerOption {
+	return optionFunc[serverConfig](func(cfg *serverConfig) {
+		if max > 0 {
+			cfg.MaxMultipartMemory = max
+		}
+	})
+}