add ilm management support (#43)

pkg/cfg/config.go

@@ -110,6 +110,8 @@ type Config struct {
 	DryRun                              bool // rollover: -n
 
 	Tag string // api ls: -t
+
+	Ilm Ilm // ilm create
 }
 
 func NewConfig() *Config {

pkg/cfg/ilm.go

@@ -0,0 +1,72 @@
+/*
+Copyright © 2026 Thomas von Dein
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+package cfg
+
+type Ilm struct {
+	Description string
+
+	HotMinAge                      string
+	HotRolloverMaxAge              string
+	HotRolloverMaxPrimaryShardSize int64
+	HotRolloverMaxDocs             int64
+	HotReadonly                    bool
+
+	WarmMinAge       string
+	WarmForceMerge   int
+	WarmShrinkShards int
+	WarmPriority     int
+
+	ColdMinAge                 string
+	ColdSearchableSnapshotRepo string
+	ColdForceMerge             int
+	ColdPriority               int
+
+	FrozenMinAge string
+
+	DeleteMinAge              string
+	DeleteSearchableSnapshots bool
+}
+
+func (cfg *Ilm) HaveHot() bool {
+	return cfg.HotMinAge != "" ||
+		cfg.HotRolloverMaxAge != "" ||
+		cfg.HotRolloverMaxDocs > 0 ||
+		cfg.HotRolloverMaxPrimaryShardSize > 0 ||
+		cfg.HotReadonly
+}
+
+func (cfg *Ilm) HaveWarm() bool {
+	return cfg.WarmMinAge != "" ||
+		cfg.WarmForceMerge > 0 ||
+		cfg.WarmShrinkShards > 0 ||
+		cfg.WarmPriority > 0
+}
+
+func (cfg *Ilm) HaveCold() bool {
+	return cfg.ColdMinAge != "" ||
+		cfg.ColdSearchableSnapshotRepo != "" ||
+		cfg.ColdForceMerge > 0 ||
+		cfg.ColdPriority > 0
+}
+
+func (cfg *Ilm) HaveFrozen() bool {
+	return cfg.FrozenMinAge != ""
+}
+
+func (cfg *Ilm) HaveDelete() bool {
+	return cfg.DeleteSearchableSnapshots || cfg.DeleteMinAge != ""
+}