Additions and enhancements (#14)

- add interactive API repl
- enhance cluster status output (use -v)
- add more ccr commands
- refactoring

pkg/es/ccr_follower.go

@@ -24,13 +24,13 @@ import (
 	"codeberg.org/scip/esctl/pkg/cfg"
 )
 
-func CcrFollowerAdd(conf *cfg.Config, index string) error {
+func getRemoteName(conf *cfg.Config) (string, error) {
 	res, err := conf.DefaultCluster.ES.Cluster.RemoteInfo().
 		Header("content-type", "application/json").
 		Header("accept", "application/json").
 		Do(context.Background())
 	if err != nil {
-		return fmt.Errorf("failed to retrieve follower info: %s", err)
+		return "", fmt.Errorf("failed to retrieve follower info: %s", err)
 	}
 
 	remote := ""
@@ -40,7 +40,99 @@ func CcrFollowerAdd(conf *cfg.Config, index string) error {
 	}
 
 	if remote == "" {
-		return fmt.Errorf("cluster doesn't have a follower: %s", err)
+		return "", fmt.Errorf("cluster doesn't have a follower: %s", err)
+	}
+
+	return remote, nil
+}
+
+func wrapError(call func(*cfg.Config, string) error, conf *cfg.Config, index string) error {
+	err := call(conf, index)
+
+	if conf.Force {
+		fmt.Printf("caught error: %s, continuing anyway", err)
+	} else {
+		return err
+	}
+
+	return nil
+}
+
+func CcrFollowerRenew(conf *cfg.Config, index string) error {
+	if err := wrapError(IndexClose, conf, index); err != nil {
+		return err
+	}
+	fmt.Printf("closed %s", index)
+
+	if err := wrapError(CcrFollowerPause, conf, index); err != nil {
+		return err
+	}
+	fmt.Printf("paused %s", index)
+
+	if err := wrapError(CcrFollowerUnfollow, conf, index); err != nil {
+		return err
+	}
+	fmt.Printf("unfollowed %s", index)
+
+	if err := wrapError(IndexDelete, conf, index); err != nil {
+		return err
+	}
+	fmt.Printf("deleted %s", index)
+
+	if err := CcrFollowerAdd(conf, index); err != nil {
+		return err
+	}
+	fmt.Printf("added follower %s", index)
+
+	return nil
+}
+
+func CcrFollowerResume(conf *cfg.Config, index string) error {
+	create := conf.DefaultCluster.ES.Ccr.ResumeFollow(index).
+		Header("content-type", "application/json").
+		Header("accept", "application/json")
+
+	_, err := create.Do(context.Background())
+
+	if err != nil {
+		return fmt.Errorf("failed to resume ccr following: %s", err)
+	}
+
+	return nil
+}
+
+func CcrFollowerPause(conf *cfg.Config, index string) error {
+	create := conf.DefaultCluster.ES.Ccr.PauseFollow(index).
+		Header("content-type", "application/json").
+		Header("accept", "application/json")
+
+	_, err := create.Do(context.Background())
+
+	if err != nil {
+		return fmt.Errorf("failed to pause ccr following: %s", err)
+	}
+
+	return nil
+}
+
+func CcrFollowerUnfollow(conf *cfg.Config, index string) error {
+	create := conf.DefaultCluster.ES.Ccr.ForgetFollower(index).
+		Header("content-type", "application/json").
+		Header("accept", "application/json")
+
+	_, err := create.Do(context.Background())
+
+	if err != nil {
+		return fmt.Errorf("failed to unfollow index: %s", err)
+	}
+
+	return nil
+}
+
+func CcrFollowerAdd(conf *cfg.Config, index string) error {
+	remote, err := getRemoteName(conf)
+	if err != nil {
+		return err
 	}
 
 	create := conf.DefaultCluster.ES.Ccr.Follow(index).