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Elasticsearch: Add tracing to data source (#74750)

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* Elasticsearch: Add tracing do data source

* Fix tests

* Address feedback

* Update pkg/tsdb/elasticsearch/response_parser.go

Co-authored-by: Sven Grossmann <sven.grossmann@grafana.com>

* Update pkg/tsdb/elasticsearch/response_parser.go

Co-authored-by: Sven Grossmann <sven.grossmann@grafana.com>

* Track error across both spans

* Add span for decoding of response

* Fix test

* Update setting of errors + fix test

---------

Co-authored-by: Sven Grossmann <sven.grossmann@grafana.com>
This commit is contained in:
Ivana Huckova
2023-09-18 10:49:12 +02:00
committed by GitHub
co-authored by Sven Grossmann
parent c7b6ac065a
commit 4f0b31d21b
9 changed files with 71 additions and 18 deletions
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pkg/tsdb/elasticsearch/client/client.go
+26 -1
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@@ -14,8 +14,11 @@ import (
"time"
"github.com/grafana/grafana-plugin-sdk-go/backend"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/codes"
"github.com/grafana/grafana/pkg/infra/log"
"github.com/grafana/grafana/pkg/infra/tracing"
)
// Used in logging to mark a stage
@@ -52,7 +55,7 @@ type Client interface {
}
// NewClient creates a new elasticsearch client
var NewClient = func(ctx context.Context, ds *DatasourceInfo, timeRange backend.TimeRange, logger log.Logger) (Client, error) {
var NewClient = func(ctx context.Context, ds *DatasourceInfo, timeRange backend.TimeRange, logger log.Logger, tracer tracing.Tracer) (Client, error) {
logger = logger.New("entity", "client")
ip, err := newIndexPattern(ds.Interval, ds.Database)
@@ -74,6 +77,7 @@ var NewClient = func(ctx context.Context, ds *DatasourceInfo, timeRange backend.
configuredFields: ds.ConfiguredFields,
indices: indices,
timeRange: timeRange,
tracer: tracer,
}, nil
}
@@ -84,6 +88,7 @@ type baseClientImpl struct {
indices []string
timeRange backend.TimeRange
logger log.Logger
tracer tracing.Tracer
}
func (c *baseClientImpl) GetConfiguredFields() ConfiguredFields {
@@ -163,8 +168,20 @@ func (c *baseClientImpl) executeRequest(method, uriPath, uriQuery string, body [
}
func (c *baseClientImpl) ExecuteMultisearch(r *MultiSearchRequest) (*MultiSearchResponse, error) {
var err error
multiRequests := c.createMultiSearchRequests(r.Requests)
queryParams := c.getMultiSearchQueryParameters()
_, span := c.tracer.Start(c.ctx, "datasource.elasticsearch.queryData.executeMultisearch")
span.SetAttributes("queryParams", queryParams, attribute.Key("queryParams").String(queryParams))
span.SetAttributes("url", c.ds.URL, attribute.Key("url").String(c.ds.URL))
defer func() {
if err != nil {
span.RecordError(err)
span.SetStatus(codes.Error, err.Error())
}
span.End()
}()
start := time.Now()
clientRes, err := c.executeBatchRequest("_msearch", queryParams, multiRequests)
if err != nil {
@@ -191,6 +208,14 @@ func (c *baseClientImpl) ExecuteMultisearch(r *MultiSearchRequest) (*MultiSearch
start = time.Now()
var msr MultiSearchResponse
dec := json.NewDecoder(res.Body)
_, resSpan := c.tracer.Start(c.ctx, "datasource.elasticsearch.queryData.executeMultisearch.decodeResponse")
defer func() {
if err != nil {
resSpan.RecordError(err)
resSpan.SetStatus(codes.Error, err.Error())
}
resSpan.End()
}()
err = dec.Decode(&msr)
if err != nil {
c.logger.Error("Failed to decode response from Elasticsearch", "error", err, "duration", time.Since(start))