1.3.1

.gitattributes

@@ -0,0 +1 @@
+node_modules/** linguist-vendored

CHANGELOG.md

@@ -1,4 +1,18 @@
 # Changelog
+## 1.3.1 (2026-03-15)
+* Improve project dropdown performance with AsyncSelect and server-side search
+* Cache default project list to reduce redundant backend requests
+* Cap ListProjects results to 100 for performance
+* Use Grafana UI components (Field, Input, Alert) in ConfigEditor and QueryEditor
+* Fix log levels from Warn to Error for GCE and ListProjects errors
+* Add request URL parsing for project search query support
+* Add .gitattributes for GitHub language statistics
+* Enhance filterQuery to skip empty traceID and missing projectId queries
+* Add null safety guard in addLinksToTraceIdColumn
+* Persist default query values via onChange in QueryEditor
+* Fix resource leak: close trace client when resource manager init fails
+* Fix direct props mutation in ConfigEditor service account impersonation
+
 ## 1.3.0 (2026-03-09)
 * Support OAuth passthrough authentication
 * Add universe domain support

package.json

@@ -1,6 +1,6 @@
 {
   "name": "googlecloud-trace-datasource",
-  "version": "1.3.0",
+  "version": "1.3.1",
   "description": "Backend Grafana plugin that enables visualization of GCP Cloud Trace traces and spans in Grafana.",
   "scripts": {
     "postinstall": "rm -rf node_modules/flatted/golang",

pkg/plugin/cloudtrace/client.go

@@ -46,8 +46,9 @@ type API interface {
 	GetTrace(context.Context, *TraceQuery) (*cloudtracepb.Trace, error)
 	// TestConnection queries for any trace from the given project
 	TestConnection(ctx context.Context, projectID string) error
-	// ListProjects returns the project IDs of all visible projects
-	ListProjects(context.Context) ([]string, error)
+	// ListProjects returns the project IDs of all visible projects.
+	// If query is non-empty it is forwarded to the Resource Manager search filter.
+	ListProjects(ctx context.Context, query string) ([]string, error)
 	// Close closes the underlying connection to the GCP API
 	Close() error
 }
@@ -79,6 +80,7 @@ func NewClient(ctx context.Context, jsonCreds []byte, universeDomain string) (*C
 	}
 	rClient, err := resourcemanager.NewProjectsClient(ctx, opts...)
 	if err != nil {
+		_ = client.Close()
 		return nil, err
 	}
 
@@ -100,6 +102,7 @@ func NewClientWithGCE(ctx context.Context, universeDomain string) (*Client, erro
 	}
 	rClient, err := resourcemanager.NewProjectsClient(ctx, opts...)
 	if err != nil {
+		_ = client.Close()
 		return nil, err
 	}
 
@@ -143,6 +146,7 @@ func NewClientWithImpersonation(ctx context.Context, jsonCreds []byte, impersona
 	}
 	rClient, err := resourcemanager.NewProjectsClient(ctx, opts...)
 	if err != nil {
+		_ = client.Close()
 		return nil, err
 	}
 
@@ -169,6 +173,7 @@ func NewClientWithAccessToken(ctx context.Context, accessToken string, universeD
 
 	rClient, err := resourcemanager.NewProjectsClient(ctx, opts...)
 	if err != nil {
+		_ = client.Close()
 		return nil, err
 	}
 
@@ -200,6 +205,7 @@ func NewClientWithPassThrough(ctx context.Context, headers map[string]string, un
 	}
 	rClient, err := resourcemanager.NewProjectsClient(ctx, opts...)
 	if err != nil {
+		_ = client.Close()
 		return nil, err
 	}
 
@@ -229,10 +235,18 @@ type TraceQuery struct {
 	TraceID   string
 }
 
-// ListProjects returns the project IDs of all visible projects
-func (c *Client) ListProjects(ctx context.Context) ([]string, error) {
+// ListProjects returns the project IDs of all visible projects.
+// If query is non-empty it is forwarded to the Resource Manager
+// SearchProjects API which supports free-text search (AIP-160).
+// Results are capped at maxProjects.
+const maxProjects = 100
+
+func (c *Client) ListProjects(ctx context.Context, query string) ([]string, error) {
 	projectIDs := []string{}
-	req := &resourcemanagerpb.SearchProjectsRequest{}
+	req := &resourcemanagerpb.SearchProjectsRequest{
+		Query:    query,
+		PageSize: maxProjects,
+	}
 	it := c.rClient.SearchProjects(ctx, req)
 	for {
 		project, err := it.Next()
@@ -246,6 +260,9 @@ func (c *Client) ListProjects(ctx context.Context) ([]string, error) {
 			continue
 		}
 		projectIDs = append(projectIDs, project.ProjectId)
+		if len(projectIDs) >= maxProjects {
+			break
+		}
 	}
 	return projectIDs, nil
 }

pkg/plugin/mocks/mocks_test.go

@@ -0,0 +1,5 @@
+package mocks
+
+import "testing"
+
+func TestMock(t *testing.T) {}

pkg/plugin/plugin.go

@@ -20,6 +20,7 @@ import (
 	"errors"
 	"fmt"
 	"net/http"
+	"net/url"
 	"regexp"
 	"strconv"
 	"strings"
@@ -209,7 +210,7 @@ func (d *CloudTraceDatasource) CallResource(ctx context.Context, req *backend.Ca
 	if resource == "gceDefaultProject" {
 		proj, err := utils.GCEDefaultProject(ctx, "")
 		if err != nil {
-			log.DefaultLogger.Warn("problem getting GCE default project", "error", err)
+			log.DefaultLogger.Error("problem getting GCE default project", "error", err)
 			return sender.Send(&backend.CallResourceResponse{
 				Status: http.StatusBadGateway,
 				Body:   []byte(sanitizeErrorMessage(err)),
@@ -228,9 +229,18 @@ func (d *CloudTraceDatasource) CallResource(ctx context.Context, req *backend.Ca
 			Body:   []byte(`No such path`),
 		})
 	} else {
-		projects, err := client.ListProjects(ctx)
+		reqUrl, err := url.Parse(req.URL)
 		if err != nil {
-			log.DefaultLogger.Warn("problem listing projects", "error", err)
+			return sender.Send(&backend.CallResourceResponse{
+				Status: http.StatusBadRequest,
+				Body:   []byte(`Invalid request URL`),
+			})
+		}
+		searchQuery := reqUrl.Query().Get("query")
+
+		projects, err := client.ListProjects(ctx, searchQuery)
+		if err != nil {
+			log.DefaultLogger.Error("problem listing projects", "error", err)
 			return sender.Send(&backend.CallResourceResponse{
 				Status: http.StatusBadGateway,
 				Body:   []byte(sanitizeErrorMessage(err)),

pkg/plugin/plugin_test.go

@@ -16,6 +16,7 @@ package plugin
 
 import (
 	"context"
+	"encoding/json"
 	"errors"
 	"testing"
 	"time"
@@ -341,3 +342,68 @@ func TestSanitizeErrorMessage_GoAngleBrackets(t *testing.T) {
 	result := sanitizeErrorMessage(err)
 	require.Equal(t, "x509: cannot parse <nil> as ASN.1", result)
 }
+
+// responseSender is a test helper that captures the CallResource response
+type responseSender struct {
+	resp *backend.CallResourceResponse
+}
+
+func (s *responseSender) Send(resp *backend.CallResourceResponse) error {
+	s.resp = resp
+	return nil
+}
+
+func TestCallResource_Projects(t *testing.T) {
+	expectedProjects := []string{"project-a", "project-b", "project-c"}
+
+	client := mocks.NewAPI(t)
+	client.On("ListProjects", mock.Anything, "").Return(expectedProjects, nil)
+
+	ds := &CloudTraceDatasource{
+		client: client,
+	}
+
+	sender := &responseSender{}
+	err := ds.CallResource(context.Background(), &backend.CallResourceRequest{
+		Path: "projects",
+		URL:  "projects",
+	}, sender)
+
+	require.NoError(t, err)
+	require.NotNil(t, sender.resp)
+	require.Equal(t, 200, sender.resp.Status)
+
+	var projects []string
+	err = json.Unmarshal(sender.resp.Body, &projects)
+	require.NoError(t, err)
+	require.Equal(t, expectedProjects, projects)
+	client.AssertExpectations(t)
+}
+
+func TestCallResource_ProjectsWithQuery(t *testing.T) {
+	expectedProjects := []string{"proj-a"}
+
+	client := mocks.NewAPI(t)
+	client.On("ListProjects", mock.Anything, "proj-a").Return(expectedProjects, nil)
+
+	ds := &CloudTraceDatasource{
+		client: client,
+	}
+
+	sender := &responseSender{}
+	err := ds.CallResource(context.Background(), &backend.CallResourceRequest{
+		Path: "projects",
+		URL:  "projects?query=proj-a",
+	}, sender)
+
+	require.NoError(t, err)
+	require.NotNil(t, sender.resp)
+	require.Equal(t, 200, sender.resp.Status)
+
+	var projects []string
+	err = json.Unmarshal(sender.resp.Body, &projects)
+	require.NoError(t, err)
+	require.Equal(t, expectedProjects, projects)
+	client.AssertExpectations(t)
+}
+