shards, aliases and filtering (#18)

cmd/index_alias.go

@@ -0,0 +1,84 @@
+/*
+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 cmd
+
+import (
+	"context"
+	"errors"
+
+	"codeberg.org/scip/esctl/pkg/cfg"
+	"codeberg.org/scip/esctl/pkg/es"
+
+	"github.com/urfave/cli/v3"
+)
+
+func IndexAlias(conf *cfg.Config) *cli.Command {
+	return &cli.Command{
+		Name:    "alias",
+		Aliases: []string{"a"},
+		Usage:   "manage index aliases",
+
+		Commands: []*cli.Command{
+			IndexAliasCreate(conf),
+			IndexAliasList(conf),
+			//IndexAliasShow(conf),
+			//IndexAliasDelete(conf),
+			//IndexAliasAdd(conf), // see https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-indices-update-aliases
+		},
+	}
+}
+
+func IndexAliasCreate(conf *cfg.Config) *cli.Command {
+	return &cli.Command{
+		Name:      "create",
+		Aliases:   []string{"+"},
+		Usage:     "create an index alias",
+		UsageText: "create <index> <alias>",
+
+		Action: func(ctx context.Context, cmd *cli.Command) error {
+			index := cmd.Args().Get(0)
+			alias := cmd.Args().Get(1)
+
+			if index == "" || alias == "" {
+				return errors.New("no index or alias specified")
+			}
+
+			return es.IndexAliasCreate(conf, index, alias)
+		},
+	}
+}
+
+func IndexAliasList(conf *cfg.Config) *cli.Command {
+	return &cli.Command{
+		Name:    "list",
+		Aliases: []string{"ls"},
+		Usage:   "list index aliases",
+
+		Flags: []cli.Flag{
+			&cli.StringSliceFlag{
+				Name:        "filter",
+				Usage:       "show only aliases for indicies matching the filter",
+				Destination: &conf.Filter,
+				Aliases:     []string{"F"},
+			},
+		},
+
+		Action: func(ctx context.Context, cmd *cli.Command) error {
+			return es.IndexAliasList(conf)
+		},
+	}
+}