diff --git a/docker-compose.yaml b/docker-compose.yaml
index f1de6a6..6660b77 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -21,3 +21,6 @@ services:
       GF_PATHS_PLUGINS: "/var/lib/grafana/plugins"
       GF_PLUGINS_ALLOW_LOADING_UNSIGNED_PLUGINS: "slack-astra-app,slack-astra-app-backend-datasource"
       GF_SERVER_ENABLE_GZIP: "true"
+      GF_UNIFIED_ALERTING_ENABLED: "false"
+      GF_ALERTING_ENABLED: "true"
+      GF_DATABASE_WAL: "true"
diff --git a/go.mod b/go.mod
index 7ee2076..8579e8b 100644
--- a/go.mod
+++ b/go.mod
@@ -12,6 +12,12 @@ require (
 	golang.org/x/net v0.0.0-20210614182718-04defd469f4e
 )
 
-require github.com/grafana/opensearch-datasource v1.2.0
+require (
+	github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e // indirect
+	github.com/grafana/opensearch-datasource v1.2.0
+	github.com/jung-kurt/gofpdf v1.0.3-0.20190309125859-24315acbbda5 // indirect
+	github.com/sirupsen/logrus v1.6.0 // indirect
+	golang.org/x/exp v0.0.0-20200224162631-6cc2880d07d6 // indirect
+)
 
 replace golang.org/x/sys => golang.org/x/sys v0.0.0-20220615213510-4f61da869c0c
diff --git a/pkg/astra/astra.go b/pkg/astra/astra.go
index 10855b1..5db6802 100644
--- a/pkg/astra/astra.go
+++ b/pkg/astra/astra.go
@@ -16,6 +16,8 @@ type AstraExecutor struct{}
 
 var (
 	intervalCalculator tsdb.IntervalCalculator
+	_                  backend.QueryDataHandler   = (*AstraDatasource)(nil)
+	_                  backend.CheckHealthHandler = (*AstraDatasource)(nil)
 )
 
 type TsdbQueryEndpoint interface {
diff --git a/pkg/astra/client/client.go b/pkg/astra/client/client.go
index 0752319..d361b37 100644
--- a/pkg/astra/client/client.go
+++ b/pkg/astra/client/client.go
@@ -208,7 +208,6 @@ func (c *baseClientImpl) encodeBatchRequests(requests []*multiRequest) ([]byte,
 		body := string(reqBody)
 		body = strings.ReplaceAll(body, "$__interval_ms", strconv.FormatInt(r.interval.Milliseconds(), 10))
 		body = strings.ReplaceAll(body, "$__interval", r.interval.Text)
-
 		payload.WriteString(body + "\n")
 	}
 
@@ -464,7 +463,7 @@ func (c *baseClientImpl) executePPLQueryRequest(method, uriPath string, body []b
 		return nil, err
 	}
 
-	clientLog.Debug("Executing request", "url", req.URL.String(), "method", method)
+	clientLog.Debug("Executing PPL request", "url", req.URL.String(), "method", method)
 
 	var reqInfo *PPLRequestInfo
 	if c.debugEnabled {
diff --git a/pkg/astra/client/models.go b/pkg/astra/client/models.go
index f5c24f5..2225374 100644
--- a/pkg/astra/client/models.go
+++ b/pkg/astra/client/models.go
@@ -80,7 +80,7 @@ type SearchResponse struct {
 	Error        map[string]interface{} `json:"error"`
 	Aggregations map[string]interface{} `json:"aggregations"`
 	Hits         *SearchResponseHits    `json:"hits"`
-	Shards		map[string]interface{}  `json:"_shards"`
+	Shards       map[string]interface{} `json:"_shards"`
 }
 
 // MultiSearchRequest represents a multi search request
@@ -271,8 +271,8 @@ type TermsAggregation struct {
 
 // ExtendedBounds represents extended bounds
 type ExtendedBounds struct {
-	Min string `json:"min"`
-	Max string `json:"max"`
+	Min int64 `json:"min"`
+	Max int64 `json:"max"`
 }
 
 // GeoHashGridAggregation represents a geo hash grid aggregation
diff --git a/pkg/astra/lucene_handler.go b/pkg/astra/lucene_handler.go
index fd5e1db..e51a22c 100644
--- a/pkg/astra/lucene_handler.go
+++ b/pkg/astra/lucene_handler.go
@@ -69,7 +69,7 @@ func (h *luceneHandler) processQuery(q *Query) error {
 	for _, bucketAgg := range q.BucketAggs {
 		switch bucketAgg.Type {
 		case dateHistType:
-			aggBuilder = addDateHistogramAgg(aggBuilder, bucketAgg, from, to)
+			aggBuilder = addDateHistogramAgg(aggBuilder, bucketAgg, int64(fromMs), int64(toMs))
 		case histogramType:
 			aggBuilder = addHistogramAgg(aggBuilder, bucketAgg)
 		case filtersType:
@@ -168,7 +168,7 @@ func (h *luceneHandler) executeQueries() (*backend.QueryDataResponse, error) {
 	return rp.getTimeSeries()
 }
 
-func addDateHistogramAgg(aggBuilder es.AggBuilder, bucketAgg *BucketAgg, timeFrom, timeTo string) es.AggBuilder {
+func addDateHistogramAgg(aggBuilder es.AggBuilder, bucketAgg *BucketAgg, timeFrom, timeTo int64) es.AggBuilder {
 	aggBuilder.DateHistogram(bucketAgg.ID, bucketAgg.Field, func(a *es.DateHistogramAgg, b es.AggBuilder) {
 		a.Interval = bucketAgg.Settings.Get("interval").MustString("auto")
 		a.MinDocCount = bucketAgg.Settings.Get("min_doc_count").MustInt(0)