move describe log groups to resource api (#55485)

pkg/tsdb/cloudwatch/metric_find_query.go

@@ -7,6 +7,7 @@ import (
 	"net/url"
 	"reflect"
 	"sort"
+	"strconv"
 	"strings"
 	"sync"
 	"time"
@@ -14,6 +15,7 @@ import (
 	"github.com/aws/aws-sdk-go/aws"
 	"github.com/aws/aws-sdk-go/aws/awsutil"
 	"github.com/aws/aws-sdk-go/service/cloudwatch"
+	"github.com/aws/aws-sdk-go/service/cloudwatchlogs"
 	"github.com/aws/aws-sdk-go/service/ec2"
 	"github.com/aws/aws-sdk-go/service/resourcegroupstaggingapi"
 	"github.com/grafana/grafana-plugin-sdk-go/backend"
@@ -649,6 +651,41 @@ func (e *cloudWatchExecutor) getDimensionsForCustomMetrics(region, namespace str
 	return customMetricsDimensionsMap[dsInfo.profile][dsInfo.region][namespace].Cache, nil
 }
 
+func (e *cloudWatchExecutor) handleGetLogGroups(pluginCtx backend.PluginContext, parameters url.Values) ([]suggestData, error) {
+	region := parameters.Get("region")
+	limit := parameters.Get("limit")
+	logGroupNamePrefix := parameters.Get("logGroupNamePrefix")
+
+	logsClient, err := e.getCWLogsClient(pluginCtx, region)
+	if err != nil {
+		return nil, err
+	}
+
+	logGroupLimit := defaultLogGroupLimit
+	intLimit, err := strconv.ParseInt(limit, 10, 64)
+	if err == nil && intLimit > 0 {
+		logGroupLimit = intLimit
+	}
+
+	var response *cloudwatchlogs.DescribeLogGroupsOutput = nil
+	input := &cloudwatchlogs.DescribeLogGroupsInput{Limit: aws.Int64(logGroupLimit)}
+	if len(logGroupNamePrefix) > 0 {
+		input.LogGroupNamePrefix = aws.String(logGroupNamePrefix)
+	}
+	response, err = logsClient.DescribeLogGroups(input)
+	if err != nil || response == nil {
+		return nil, err
+	}
+
+	result := make([]suggestData, 0)
+	for _, logGroup := range response.LogGroups {
+		logGroupName := *logGroup.LogGroupName
+		result = append(result, suggestData{Text: logGroupName, Value: logGroupName, Label: logGroupName})
+	}
+
+	return result, nil
+}
+
 func isDuplicate(nameList []string, target string) bool {
 	for _, name := range nameList {
 		if name == target {