web: display GOMEMLIMIT in runtime info

Signed-off-by: Vladimir Varankin <vladimir@varank.in>

web/api/v1/api.go

@@ -143,6 +143,7 @@ type RuntimeInfo struct {
 	CorruptionCount     int64     `json:"corruptionCount"`
 	GoroutineCount      int       `json:"goroutineCount"`
 	GOMAXPROCS          int       `json:"GOMAXPROCS"`
+	GOMEMLIMIT          int64     `json:"GOMEMLIMIT"`
 	GOGC                string    `json:"GOGC"`
 	GODEBUG             string    `json:"GODEBUG"`
 	StorageRetention    string    `json:"storageRetention"`

web/web.go

@@ -29,6 +29,7 @@ import (
 	"path"
 	"path/filepath"
 	"runtime"
+	"runtime/debug"
 	"strconv"
 	"strings"
 	"sync"
@@ -710,6 +711,7 @@ func (h *Handler) runtimeInfo() (api_v1.RuntimeInfo, error) {
 		CWD:            h.cwd,
 		GoroutineCount: runtime.NumGoroutine(),
 		GOMAXPROCS:     runtime.GOMAXPROCS(0),
+		GOMEMLIMIT:     debug.SetMemoryLimit(-1),
 		GOGC:           os.Getenv("GOGC"),
 		GODEBUG:        os.Getenv("GODEBUG"),
 	}