Add experimental debug options

option/debug.go

@@ -0,0 +1,43 @@
+package option
+
+import (
+	"encoding/json"
+
+	"github.com/dustin/go-humanize"
+)
+
+type DebugOptions struct {
+	GCPercent    *int        `json:"gc_percent,omitempty"`
+	MaxStack     *int        `json:"max_stack,omitempty"`
+	MaxThreads   *int        `json:"max_threads,omitempty"`
+	PanicOnFault *bool       `json:"panic_on_fault,omitempty"`
+	TraceBack    string      `json:"trace_back,omitempty"`
+	MemoryLimit  BytesLength `json:"memory_limit,omitempty"`
+	OOMKiller    *bool       `json:"oom_killer,omitempty"`
+}
+
+type BytesLength int64
+
+func (l BytesLength) MarshalJSON() ([]byte, error) {
+	return json.Marshal(humanize.IBytes(uint64(l)))
+}
+
+func (l *BytesLength) UnmarshalJSON(bytes []byte) error {
+	var valueInteger int64
+	err := json.Unmarshal(bytes, &valueInteger)
+	if err == nil {
+		*l = BytesLength(valueInteger)
+		return nil
+	}
+	var valueString string
+	err = json.Unmarshal(bytes, &valueString)
+	if err != nil {
+		return err
+	}
+	parsedValue, err := humanize.ParseBytes(valueString)
+	if err != nil {
+		return err
+	}
+	*l = BytesLength(parsedValue)
+	return nil
+}