MM-11863 Add KVList method (#9467)

* Add KVList method

* Add KVList method

Add KVList method

* Add pagination support

* Change offset, limit to page, perPage

* Rename constant

app/plugin_api.go

@@ -331,6 +331,10 @@ func (api *PluginAPI) KVDelete(key string) *model.AppError {
 	return api.app.DeletePluginKey(api.id, key)
 }
 
+func (api *PluginAPI) KVList(page, perPage int) ([]string, *model.AppError) {
+	return api.app.ListPluginKeys(api.id, page, perPage)
+}
+
 func (api *PluginAPI) PublishWebSocketEvent(event string, payload map[string]interface{}, broadcast *model.WebsocketBroadcast) {
 	api.app.Publish(&model.WebSocketEvent{
 		Event:     fmt.Sprintf("custom_%v_%v", api.id, event),

app/plugin_key_value_store.go

@@ -59,3 +59,14 @@ func (a *App) DeletePluginKey(pluginId string, key string) *model.AppError {
 
 	return result.Err
 }
+
+func (a *App) ListPluginKeys(pluginId string, page, perPage int) ([]string, *model.AppError) {
+	result := <-a.Srv.Store.Plugin().List(pluginId, page, perPage)
+
+	if result.Err != nil {
+		mlog.Error(result.Err.Error())
+		return nil, result.Err
+	}
+
+	return result.Data.([]string), nil
+}

app/plugin_test.go

@@ -5,6 +5,8 @@ package app
 
 import (
 	"bytes"
+	"crypto/sha256"
+	"encoding/base64"
 	"io/ioutil"
 	"net/http"
 	"net/http/httptest"
@@ -17,6 +19,11 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
+func getHashedKey(key string) string {
+	hash := sha256.New()
+	hash.Write([]byte(key))
+	return base64.StdEncoding.EncodeToString(hash.Sum(nil))
+}
 func TestPluginKeyValueStore(t *testing.T) {
 	th := Setup().InitBasic()
 	defer th.TearDown()
@@ -40,6 +47,41 @@ func TestPluginKeyValueStore(t *testing.T) {
 	assert.Nil(t, th.App.DeletePluginKey(pluginId, "intkey"))
 	assert.Nil(t, th.App.DeletePluginKey(pluginId, "postkey"))
 	assert.Nil(t, th.App.DeletePluginKey(pluginId, "notrealkey"))
+
+	// Test ListKeys
+	assert.Nil(t, th.App.SetPluginKey(pluginId, "key2", []byte("test")))
+	hashedKey := getHashedKey("key")
+	hashedKey2 := getHashedKey("key2")
+	list, err := th.App.ListPluginKeys(pluginId, 0, 1)
+	assert.Nil(t, err)
+	assert.Equal(t, 1, len(list))
+	assert.Equal(t, hashedKey, list[0])
+
+	list, err = th.App.ListPluginKeys(pluginId, 1, 1)
+	assert.Nil(t, err)
+	assert.Equal(t, 1, len(list))
+	assert.Equal(t, hashedKey2, list[0])
+
+	//List Keys bad input
+	list, err = th.App.ListPluginKeys(pluginId, 0, 0)
+	assert.Nil(t, err)
+	assert.Equal(t, 2, len(list))
+
+	list, err = th.App.ListPluginKeys(pluginId, 0, -1)
+	assert.Nil(t, err)
+	assert.Equal(t, 2, len(list))
+
+	list, err = th.App.ListPluginKeys(pluginId, -1, 1)
+	assert.Nil(t, err)
+	assert.Equal(t, 1, len(list))
+
+	list, err = th.App.ListPluginKeys(pluginId, -1, 0)
+	assert.Nil(t, err)
+	assert.Equal(t, 2, len(list))
+
+	list, err = th.App.ListPluginKeys(pluginId, 2, 2)
+	assert.Nil(t, err)
+	assert.Equal(t, 0, len(list))
 }
 
 func TestServePluginRequest(t *testing.T) {