(feat): Add Sumo Logic scaler

CHANGELOG.md

@@ -60,7 +60,7 @@ To learn more about active deprecations, we recommend checking [GitHub Discussio
 
 ### New
 
-- TODO ([#XXX](https://github.com/kedacore/keda/issues/XXX))
+- **General**: Introduce new Sumo Logic Scaler ([#6734](https://github.com/kedacore/keda/issues/6734))
 
 #### Experimental
 

pkg/scalers/sumologic/logs.go

@@ -0,0 +1,124 @@
+package sumologic
+
+import (
+	"encoding/json"
+	"fmt"
+	"strconv"
+	"time"
+
+	"go.uber.org/zap"
+)
+
+const (
+	searchJobPath  = "api/v1/search/jobs"
+	stateDone      = "DONE GATHERING RESULTS"
+	stateCancelled = "CANCELLED"
+	statePaused    = "FORCE PAUSED"
+)
+
+func (c *Client) createLogSearchJob(query, from, to, tz string) (string, error) {
+	requestPayload := LogSearchRequest{
+		Query:    query,
+		From:     from,
+		To:       to,
+		TimeZone: tz,
+	}
+
+	payload, err := json.Marshal(requestPayload)
+	if err != nil {
+		return "", fmt.Errorf("failed to marshal log search request: %w", err)
+	}
+
+	url := fmt.Sprintf("%s/%s", c.config.Host, searchJobPath)
+	resp, err := c.makeRequest("POST", url, payload)
+	if err != nil {
+		return "", err
+	}
+
+	var jobResp LogSearchJobResponse
+	if err := json.Unmarshal(resp, &jobResp); err != nil {
+		return "", err
+	}
+
+	return jobResp.ID, nil
+}
+
+func (c *Client) waitForLogSearchJobCompletion(jobID string) (*LogSearchJobStatus, error) {
+	url := fmt.Sprintf("%s/%s/%s", c.config.Host, searchJobPath, jobID)
+
+	for {
+		resp, err := c.makeRequest("GET", url, nil)
+		if err != nil {
+			return nil, err
+		}
+
+		var status LogSearchJobStatus
+		if err := json.Unmarshal(resp, &status); err != nil {
+			return nil, err
+		}
+
+		c.logger.Debug("log search job state", zap.String("state", status.State), zap.Int("recordCount", status.RecordCount))
+
+		if status.State == stateDone {
+			return &status, nil
+		} else if status.State == stateCancelled || status.State == statePaused {
+			return nil, fmt.Errorf("search job failed, state: %s", status.State)
+		}
+
+		time.Sleep(2 * time.Second)
+	}
+}
+
+func (c *Client) getLogSearchRecords(jobID string, totalRecords int, resultField string) ([]float64, error) {
+	var allRecords []float64
+	offset := 0
+	limit := 10000
+
+	for offset < totalRecords {
+		remaining := totalRecords - offset
+		if remaining < limit {
+			limit = remaining
+		}
+
+		url := fmt.Sprintf("%s/%s/%s/records?offset=%d&limit=%d", c.config.Host, searchJobPath, jobID, offset, limit)
+		resp, err := c.makeRequest("GET", url, nil)
+		if err != nil {
+			return nil, err
+		}
+
+		var recordsResponse LogSearchRecordsResponse
+		if err := json.Unmarshal(resp, &recordsResponse); err != nil {
+			return nil, err
+		}
+
+		if len(recordsResponse.Records) == 0 {
+			break
+		}
+
+		for _, record := range recordsResponse.Records {
+			if result, exists := record.Map[resultField]; exists {
+				val, err := strconv.ParseFloat(result, 64)
+				if err != nil {
+					return nil, fmt.Errorf("failed to parse resultField: %s value %w", resultField, err)
+				}
+				allRecords = append(allRecords, val)
+			}
+		}
+		offset += limit
+	}
+
+	c.logger.Debug("log search total records fetched", zap.Int("totalRecords", len(allRecords)))
+
+	return allRecords, nil
+}
+
+func (c *Client) deleteLogSearchJob(jobID string) error {
+	url := fmt.Sprintf("%s/%s/%s", c.config.Host, searchJobPath, jobID)
+
+	_, err := c.makeRequest("DELETE", url, nil)
+	if err == nil {
+		c.logger.Debug("log search job deleted", zap.String("jobID", jobID))
+	}
+
+	return err
+}

pkg/scalers/sumologic/metrics.go

@@ -0,0 +1,172 @@
+package sumologic
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"time"
+)
+
+const (
+	metricsQueryPath = "api/v1/metricsQueries"
+)
+
+var validRollupTypes = map[string]bool{
+	"Avg":   true,
+	"Sum":   true,
+	"Min":   true,
+	"Max":   true,
+	"Count": true,
+}
+
+var validQueryAggregations = map[string]bool{
+	"Latest": true,
+	"Avg":    true,
+	"Sum":    true,
+	"Min":    true,
+	"Max":    true,
+	"Count":  true,
+}
+
+func (c *Client) createMetricsQuery(query string, quantization time.Duration, from, to, rollup string) ([]byte, error) {
+	metricsQuery := MetricsQuery{
+		RowID:        "A",
+		Query:        query,
+		Quantization: int64(quantization / time.Millisecond),
+		Rollup:       rollup,
+	}
+
+	timeRange := TimeRange{
+		Type: "BeginBoundedTimeRange",
+		From: TimeRangeBoundary{
+			Type:        "Iso8601TimeRangeBoundary",
+			Iso8601Time: from,
+		},
+		To: TimeRangeBoundary{
+			Type:        "Iso8601TimeRangeBoundary",
+			Iso8601Time: to,
+		},
+	}
+
+	requestPayload := MetricsQueryRequest{
+		Queries:   []MetricsQuery{metricsQuery},
+		TimeRange: timeRange,
+	}
+
+	payload, err := json.Marshal(requestPayload)
+	if err != nil {
+		return nil, fmt.Errorf("failed to marshal metrics query request: %w", err)
+	}
+
+	url := fmt.Sprintf("%s/%s", c.config.Host, metricsQueryPath)
+	return c.makeRequest("POST", url, payload)
+}
+
+func (c *Client) createMultiMetricsQuery(queries map[string]string, quantization time.Duration, from, to, rollup string) ([]byte, error) {
+	metricsQueries := make([]MetricsQuery, 0)
+	for rowID, query := range queries {
+		metricsQuery := MetricsQuery{
+			RowID:        rowID,
+			Query:        query,
+			Quantization: int64(quantization / time.Millisecond),
+			Rollup:       rollup,
+		}
+		metricsQueries = append(metricsQueries, metricsQuery)
+	}
+
+	timeRange := TimeRange{
+		Type: "BeginBoundedTimeRange",
+		From: TimeRangeBoundary{
+			Type:        "Iso8601TimeRangeBoundary",
+			Iso8601Time: from,
+		},
+		To: TimeRangeBoundary{
+			Type:        "Iso8601TimeRangeBoundary",
+			Iso8601Time: to,
+		},
+	}
+
+	requestPayload := MetricsQueryRequest{
+		Queries:   metricsQueries,
+		TimeRange: timeRange,
+	}
+
+	payload, err := json.Marshal(requestPayload)
+	if err != nil {
+		return nil, fmt.Errorf("failed to marshal metrics query request: %w", err)
+	}
+
+	url := fmt.Sprintf("%s/%s", c.config.Host, metricsQueryPath)
+	return c.makeRequest("POST", url, payload)
+}
+
+func (c *Client) parseMetricsQueryResponse(response []byte) (*MetricsQueryResponse, error) {
+	var metricsResponse MetricsQueryResponse
+	if err := json.Unmarshal(response, &metricsResponse); err != nil {
+		return nil, fmt.Errorf("failed to unmarshal metrics query response: %w", err)
+	}
+
+	if metricsResponse.Errors != nil && len(metricsResponse.Errors.Errors) > 0 {
+		return nil, fmt.Errorf("query execution failed with errors %v", metricsResponse.Errors.Errors)
+	}
+
+	return &metricsResponse, nil
+}
+
+func (c *Client) metricsStats(values []float64, dimension string) (*float64, error) {
+	if len(values) == 0 {
+		return nil, errors.New("no values provided")
+	}
+
+	var result float64
+	switch dimension {
+	case "Latest":
+		result = values[len(values)-1]
+	case "Sum":
+		for _, v := range values {
+			result += v
+		}
+	case "Count":
+		result = float64(len(values))
+	case "Avg":
+		var sum float64
+		for _, v := range values {
+			sum += v
+		}
+		result = sum / float64(len(values))
+	case "Min":
+		minVal := values[0]
+		for _, v := range values[1:] {
+			if v < minVal {
+				minVal = v
+			}
+		}
+		result = minVal
+	case "Max":
+		maxVal := values[0]
+		for _, v := range values[1:] {
+			if v > maxVal {
+				maxVal = v
+			}
+		}
+		result = maxVal
+	default:
+		return nil, fmt.Errorf("invalid aggregation '%s', supported values: Latest, Avg, Sum, Count, Min, Max", dimension)
+	}
+
+	return &result, nil
+}
+
+func IsValidRollupType(rollup string) error {
+	if !validRollupTypes[rollup] {
+		return fmt.Errorf("invalid rollup value: %s, must be one of Avg, Sum, Min, Max, Count", rollup)
+	}
+	return nil
+}
+
+func IsValidQueryAggregation(aggregation string) error {
+	if !validQueryAggregations[aggregation] {
+		return fmt.Errorf("invalid aggregation '%s', supported values: Latest, Avg, Sum, Count, Min, Max", aggregation)
+	}
+	return nil
+}