Refactored table_azure_storage_blob to stream results per container a…

…nd removed Go routine from the List function Closes #854 (#855)

azure/table_azure_storage_blob.go

@@ -5,7 +5,6 @@ import (
 	"fmt"
 	"net/url"
 	"strings"
-	"sync"
 
 	"github.com/turbot/steampipe-plugin-sdk/v5/grpc/proto"
 	"github.com/turbot/steampipe-plugin-sdk/v5/plugin"
@@ -389,31 +388,17 @@ func listStorageBlobs(ctx context.Context, d *plugin.QueryData, h *plugin.Hydrat
 		containers = append(containers, result.Values()...)
 	}
 
-	var wg sync.WaitGroup
-	blobCh := make(chan []blobInfo, len(containers))
-	errorCh := make(chan error, len(containers))
-
 	// Iterating all the available containers
 	for _, item := range containers {
-		wg.Add(1)
-		go getRowDataForBlobAsync(ctx, item, accountName, session.StorageEndpointSuffix, credential, &wg, blobCh, errorCh)
-	}
-
-	// wait for all containers to be processed
-	wg.Wait()
-
-	// NOTE: close channel before ranging over results
-	close(blobCh)
-	close(errorCh)
-
-	for err := range errorCh {
-		// return the first error
-		return nil, err
-	}
+		blobs, err := getRowDataForBlob(ctx, item, accountName, session.StorageEndpointSuffix, credential)
+		if err != nil {
+			plugin.Logger(ctx).Error("azure_storage_blob.listStorageBlobs.getRowDataForBlob", "api_error", err)
+			return nil, err
+		}
 
-	for item := range blobCh {
-		for _, data := range item {
+		for _, data := range blobs {
 			d.StreamListItem(ctx, &blobInfo{data.Blob, data.Name, accountName, data.Container, resourceGroup, &subscriptionID, region, data.IsSnapshot})
+
 			// Check if context has been cancelled or if the limit has been hit (if specified)
 			// if there is a limit, it will return the number of rows required to reach this limit
 			if d.RowsRemaining(ctx) == 0 {
@@ -425,17 +410,6 @@ func listStorageBlobs(ctx context.Context, d *plugin.QueryData, h *plugin.Hydrat
 	return nil, err
 }
 
-func getRowDataForBlobAsync(ctx context.Context, item storage.ListContainerItem, accountName string, storageEndpointSuffix string, credential *azblob.SharedKeyCredential, wg *sync.WaitGroup, subnetCh chan []blobInfo, errorCh chan error) {
-	defer wg.Done()
-
-	rowData, err := getRowDataForBlob(ctx, item, accountName, storageEndpointSuffix, credential)
-	if err != nil {
-		errorCh <- err
-	} else if rowData != nil {
-		subnetCh <- rowData
-	}
-}
-
 // List all the available blobs
 func getRowDataForBlob(ctx context.Context, container storage.ListContainerItem, accountName string, storageEndpointSuffix string, credential *azblob.SharedKeyCredential) ([]blobInfo, error) {
 	primaryURL, _ := url.Parse(fmt.Sprintf("https://%s.blob.%s", accountName, storageEndpointSuffix))