feat: support database connectors and HTTP server configuration

config/http.go

@@ -0,0 +1,45 @@
+package config
+
+import (
+	"log"
+	"time"
+)
+
+// HTTPConfig controls built-in HTTP servers. Positive values override the
+// selected transport's defaults; zero keeps its existing behavior. Timeouts
+// follow that transport's semantics, not a handler execution deadline.
+type HTTPConfig struct {
+	ReadHeaderTimeout time.Duration `json:"readHeaderTimeout"`
+	ReadTimeout       time.Duration `json:"readTimeout"`
+	WriteTimeout      time.Duration `json:"writeTimeout"`
+	IdleTimeout       time.Duration `json:"idleTimeout"`
+	MaxHeaderBytes    int           `json:"maxHeaderBytes"`
+	// ErrorLog is a Go-only hook for the nethttp server's internal diagnostics.
+	ErrorLog *log.Logger `json:"-"`
+}
+
+func (c HTTPConfig) Validate() error {
+	for _, field := range []struct {
+		name  string
+		value time.Duration
+	}{
+		{"readHeaderTimeout", c.ReadHeaderTimeout},
+		{"readTimeout", c.ReadTimeout},
+		{"writeTimeout", c.WriteTimeout},
+		{"idleTimeout", c.IdleTimeout},
+	} {
+		if field.value < 0 {
+			return &ConfigError{Field: "http." + field.name, Message: "must be nonnegative"}
+		}
+	}
+	if c.MaxHeaderBytes < 0 {
+		return &ConfigError{Field: "http.maxHeaderBytes", Message: "must be nonnegative"}
+	}
+	return nil
+}
+
+// WithHTTPConfig sets the built-in server's HTTP options. RunWith uses a
+// caller-owned Runner and does not apply these options to that runner.
+func WithHTTPConfig(settings HTTPConfig) Option {
+	return func(cfg *Config) { cfg.HTTP = settings }
+}