Add support for explain.tensor.ru

README.md

@@ -39,6 +39,7 @@ On default, make install puts the compiled binary in `go/bin`.
     ```bash
     postgres=# \o | plan-exporter
     ```
+    * You may wish to specify `--target [dalibo|depesz|tensor]` to customize your visualizer
 
 1. Run explain query:
     ```bash
@@ -75,6 +76,7 @@ On default, make install puts the compiled binary in `go/bin`.
   Available targets:
   - `depesz` - https://explain.depesz.com [default]
   - `dalibo` - https://explain.dalibo.com
+  - `tensor` - https://explain.tensor.ru
 
 ## Contact Information
 

visualizer/tensor/tensor.go

@@ -0,0 +1,36 @@
+// Package tensor provides a query plan exporter for the Tensor visualizer.
+package tensor
+
+import (
+	"fmt"
+	"net/url"
+
+	"github.com/agneum/plan-exporter/client"
+)
+
+// visualizer constants
+const (
+	VisualizerType = "tensor"
+	visualizerURL  = "https://explain.tensor.ru/explain"
+)
+
+// Tensor defines a query plan exporter for the Tensor visualizer.
+type Tensor struct {
+}
+
+// New creates a new Tensor exporter.
+func New() *Tensor {
+	return &Tensor{}
+}
+
+// Export posts plan to a visualizer and returns link to the visualization plan page.
+func (d *Tensor) Export(plan string) (string, error) {
+	formVal := url.Values{"explain": []string{plan}}
+
+	explainURL, err := client.MakeRequest(visualizerURL, formVal)
+	if err != nil {
+		return "", fmt.Errorf("failed to make a request: %w", err)
+	}
+
+	return explainURL, nil
+}

visualizer/visualizer.go

@@ -7,6 +7,7 @@ import (
 	"github.com/agneum/plan-exporter/pgscanner"
 	"github.com/agneum/plan-exporter/visualizer/dalibo"
 	"github.com/agneum/plan-exporter/visualizer/depesz"
+	"github.com/agneum/plan-exporter/visualizer/tensor"
 )
 
 // New creates a new query plan exporter by visualizer type.
@@ -17,6 +18,9 @@ func New(visualizer string) (pgscanner.PlanExporter, error) {
 
 	case depesz.VisualizerType:
 		return depesz.New(), nil
+
+	case tensor.VisualizerType:
+		return tensor.New(), nil
 	}
 
 	return nil, fmt.Errorf("unknown visualizer given %q", visualizer)