add ilm forecast data collection, generalized parallel api calls

pkg/es/cluster_util.go

@@ -18,16 +18,13 @@ package es
 
 import (
 	"context"
-	"errors"
 	"fmt"
 	"regexp"
 	"strconv"
 	"strings"
-	"sync"
 
 	"codeberg.org/scip/esctl/pkg/cfg"
 	"codeberg.org/scip/esctl/pkg/printer"
-	"github.com/elastic/go-elasticsearch/v9"
 	"github.com/elastic/go-elasticsearch/v9/typedapi/cluster/health"
 	"github.com/elastic/go-elasticsearch/v9/typedapi/types"
 )
@@ -334,69 +331,6 @@ func splitArg(arg string) (string, string) {
 	}
 }
 
-func getClusterData(es *elasticsearch.TypedClient, wg *sync.WaitGroup, reschan chan apiResponse, which string) {
-	defer wg.Done()
-
-	ar := apiResponse{}
-	arerr := errors.New("")
-
-	switch which {
-	case "health":
-		res, err := es.Cluster.Health().
-			Do(context.Background())
-
-		ar.health = res
-		ar.which = ResponseHealth
-		arerr = err
-
-	case "info":
-		res, err := es.Info().
-			Do(context.Background())
-
-		ar.info = res
-		ar.which = ResponseInfo
-		arerr = err
-
-	case "ccrstats":
-		res, err := es.Ccr.Stats().
-			Do(context.Background())
-
-		ar.ccr = res
-		ar.which = ResponseCcr
-		arerr = err
-
-	case "stats":
-		res, err := es.Cluster.Stats().
-			Do(context.Background())
-
-		ar.stats = res
-		ar.which = ResponseStats
-		arerr = err
-
-	case "indices":
-		res, err := es.Cat.Indices().
-			Do(context.Background())
-
-		ar.indices = &res
-		ar.which = ResponseIndices
-		arerr = err
-
-	case "tasks":
-		res, err := es.Cat.Tasks().
-			Do(context.Background())
-
-		ar.tasks = &res
-		ar.which = ResponseTasks
-		arerr = err
-	}
-
-	if arerr != nil {
-		ar.error = fmt.Errorf("failed to get cluster health: %s", arerr)
-	}
-
-	reschan <- ar
-}
-
 // recursively traverse  the raw  settings hash and  build a  flat map
 // consisting of the translated path and its value.
 //