SupportBundle: Add count for each support bundle created (#63125)

* Export `StatsCount` function

* Add new statKV each time a bundle is created

* Export bundle count

---------

Co-authored-by: Jo <joao.guerreiro@grafana.com>

pkg/services/supportbundles/supportbundlesimpl/store.go

@@ -4,13 +4,17 @@ import (
 	"context"
 	"encoding/json"
 	"errors"
+	"fmt"
 	"sort"
+	"strconv"
 	"strings"
+	"sync"
 	"time"
 
 	"github.com/google/uuid"
 
 	"github.com/grafana/grafana/pkg/infra/kvstore"
+	"github.com/grafana/grafana/pkg/infra/log"
 	"github.com/grafana/grafana/pkg/services/supportbundles"
 	"github.com/grafana/grafana/pkg/services/user"
 )
@@ -19,17 +23,27 @@ const (
 	defaultBundleExpiration = 72 * time.Hour // 72h
 )
 
+const key = "count"
+
 func newStore(kv kvstore.KVStore) *store {
-	return &store{kv: kvstore.WithNamespace(kv, 0, "supportbundle")}
+	return &store{
+		kv:     kvstore.WithNamespace(kv, 0, "supportbundle"),
+		statKV: kvstore.WithNamespace(kv, 0, "supportbundlestats"),
+		log:    log.New("supportbundle.store"),
+	}
 }
 
 type store struct {
-	kv *kvstore.NamespacedKVStore
+	kv     *kvstore.NamespacedKVStore
+	log    log.Logger
+	mu     sync.Mutex
+	statKV *kvstore.NamespacedKVStore
 }
 
 type bundleStore interface {
 	Create(ctx context.Context, usr *user.SignedInUser) (*supportbundles.Bundle, error)
 	Get(ctx context.Context, uid string) (*supportbundles.Bundle, error)
+	StatsCount(ctx context.Context) (int64, error)
 	List() ([]supportbundles.Bundle, error)
 	Remove(ctx context.Context, uid string) error
 	Update(ctx context.Context, uid string, state supportbundles.State, tarBytes []byte) error
@@ -49,6 +63,25 @@ func (s *store) Create(ctx context.Context, usr *user.SignedInUser) (*supportbun
 		ExpiresAt: time.Now().Add(defaultBundleExpiration).Unix(),
 	}
 
+	s.mu.Lock()
+
+	bundlesCreatedString, _, err := s.statKV.Get(ctx, key)
+	if err != nil {
+		s.log.Warn("An error has occurred upon retrieving value at statKV", "key", key)
+	}
+
+	bundlesCreated, err := strconv.ParseInt(bundlesCreatedString, 10, 64)
+	if err != nil {
+		s.log.Warn("No value was found at statKV", "key", key)
+	}
+
+	bundlesCreated = bundlesCreated + 1
+
+	if err := s.statKV.Set(ctx, key, fmt.Sprint(bundlesCreated)); err != nil {
+		s.log.Warn("An error has occurred upon setting a value at statKV", "key", key)
+	}
+	s.mu.Unlock()
+
 	if err := s.set(ctx, &bundle); err != nil {
 		return nil, err
 	}
@@ -121,3 +154,14 @@ func (s *store) List() ([]supportbundles.Bundle, error) {
 
 	return res, nil
 }
+
+func (s *store) StatsCount(ctx context.Context) (int64, error) {
+	countString, exists, err := s.statKV.Get(ctx, key)
+	if err != nil {
+		return 0, err
+	}
+	if !exists {
+		return 0, nil
+	}
+	return strconv.ParseInt(countString, 10, 64)
+}