Backend Plugins: Provide proper plugin config to plugins (#21985)

Properly provides plugin configs to backend plugins.
Uses v0.16.0 of grafana-plugin-sdk-go-

Ref #21512
Ref #19667

go.mod

@@ -32,7 +32,7 @@ require (
 	github.com/gorilla/websocket v1.4.1
 	github.com/gosimple/slug v1.4.2
 	github.com/grafana/grafana-plugin-model v0.0.0-20190930120109-1fc953a61fb4
-	github.com/grafana/grafana-plugin-sdk-go v0.14.0
+	github.com/grafana/grafana-plugin-sdk-go v0.16.0
 	github.com/hashicorp/go-hclog v0.8.0
 	github.com/hashicorp/go-plugin v1.0.1
 	github.com/hashicorp/go-version v1.1.0

go.sum

@@ -95,6 +95,7 @@ github.com/go-xorm/xorm v0.7.1 h1:Kj7mfuqctPdX60zuxP6EoEut0f3E6K66H6hcoxiHUMc=
 github.com/go-xorm/xorm v0.7.1/go.mod h1:EHS1htMQFptzMaIHKyzqpHGw6C9Rtug75nsq6DA9unI=
 github.com/gobwas/glob v0.2.3 h1:A4xDbljILXROh+kObIiy5kIaPYD8e96x1tgBhUI5J+Y=
 github.com/gobwas/glob v0.2.3/go.mod h1:d3Ez4x06l9bZtSvzIay5+Yzi0fmZzPgnTbPcKjJAkT8=
+github.com/gogo/protobuf v1.1.1 h1:72R+M5VuhED/KujmZVcIquuo8mBgX4oVda//DQb3PXo=
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
@@ -125,8 +126,8 @@ github.com/gosimple/slug v1.4.2 h1:jDmprx3q/9Lfk4FkGZtvzDQ9Cj9eAmsjzeQGp24PeiQ=
 github.com/gosimple/slug v1.4.2/go.mod h1:ER78kgg1Mv0NQGlXiDe57DpCyfbNywXXZ9mIorhxAf0=
 github.com/grafana/grafana-plugin-model v0.0.0-20190930120109-1fc953a61fb4 h1:SPdxCL9BChFTlyi0Khv64vdCW4TMna8+sxL7+Chx+Ag=
 github.com/grafana/grafana-plugin-model v0.0.0-20190930120109-1fc953a61fb4/go.mod h1:nc0XxBzjeGcrMltCDw269LoWF9S8ibhgxolCdA1R8To=
-github.com/grafana/grafana-plugin-sdk-go v0.14.0 h1:7Y34uhBkmkZ1ywYNfTXYXZihRgxgCf9WQbad4iqJ+t8=
-github.com/grafana/grafana-plugin-sdk-go v0.14.0/go.mod h1:Dgc2ygLBJXTTIcfIgCGG6mxRcC/aZ36rKZ1tq5B5XmY=
+github.com/grafana/grafana-plugin-sdk-go v0.16.0 h1:fuoLzsQLs0RKcvXDP/cAQxaZGP1rbnoBwUaY/1yvh6k=
+github.com/grafana/grafana-plugin-sdk-go v0.16.0/go.mod h1:D1MkO+4EPCWc1Wrr260hq7wbo7Ox0grnNWBygulq7aM=
 github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0 h1:Ovs26xHkKqVztRpIrF/92BcuyuQ/YW4NSIpoGtfXNho=
 github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0/go.mod h1:8NvIoxWQoOIhqOTXgfV/d3M/q6VIi02HzZEHgUlZvzk=
 github.com/hashicorp/go-hclog v0.0.0-20180709165350-ff2cf002a8dd/go.mod h1:9bjs9uLqI8l75knNv3lV1kA55veR+WUPSiKIWcQHudI=
@@ -417,8 +418,6 @@ gopkg.in/mail.v2 v2.3.1/go.mod h1:htwXN1Qh09vZJ1NVKxQqHPBaCBbzKhp5GzuJEA4VJWw=
 gopkg.in/redis.v2 v2.3.2/go.mod h1:4wl9PJ/CqzeHk3LVq1hNLHH8krm3+AXEgut4jVc++LU=
 gopkg.in/redis.v5 v5.2.9 h1:MNZYOLPomQzZMfpN3ZtD1uyJ2IDonTTlxYiV/pEApiw=
 gopkg.in/redis.v5 v5.2.9/go.mod h1:6gtv0/+A4iM08kdRfocWYB3bLX2tebpNtfKlFT6H4mY=
-gopkg.in/square/go-jose.v2 v2.3.0 h1:nLzhkFyl5bkblqYBoiWJUt5JkWOzmiaBtCxdJAqJd3U=
-gopkg.in/square/go-jose.v2 v2.3.0/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI=
 gopkg.in/square/go-jose.v2 v2.4.1 h1:H0TmLt7/KmzlrDOpa1F+zr0Tk90PbJYBfsVUmRLrf9Y=
 gopkg.in/square/go-jose.v2 v2.4.1/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI=
 gopkg.in/stretchr/testify.v1 v1.2.2/go.mod h1:QI5V/q6UbPmuhtm10CaFZxED9NreB8PnFYN9JcR6TxU=

pkg/api/datasources.go

@@ -275,15 +275,28 @@ func (hs *HTTPServer) CallDatasourceResource(c *m.ReqContext) Response {
 	if err != nil {
 		return Error(500, "Failed to read request body", err)
 	}
+
+	jsonDataBytes, err := ds.JsonData.MarshalJSON()
+	if err != nil {
+		return Error(500, "Failed to marshal JSON data to bytes", err)
+	}
+
 	req := backendplugin.CallResourceRequest{
 		Config: backendplugin.PluginConfig{
-			OrgID:    c.OrgId,
-			PluginID: plugin.Id,
-			Instance: &backendplugin.PluginInstance{
-				ID:   ds.Id,
-				Name: ds.Name,
-				Type: ds.Type,
-				URL:  ds.Url,
+			OrgID:                   c.OrgId,
+			PluginID:                plugin.Id,
+			PluginType:              plugin.Type,
+			JSONData:                jsonDataBytes,
+			DecryptedSecureJSONData: ds.DecryptedValues(),
+			Updated:                 ds.Updated,
+			DataSourceConfig: &backendplugin.DataSourceConfig{
+				ID:               ds.Id,
+				Name:             ds.Name,
+				URL:              ds.Url,
+				Database:         ds.Database,
+				User:             ds.User,
+				BasicAuthEnabled: ds.BasicAuth,
+				BasicAuthUser:    ds.BasicAuthUser,
 			},
 		},
 		Path:    c.Params("*"),

pkg/api/plugins.go

 package api
 
 import (
+	"encoding/json"
 	"sort"
+	"time"
 
 	"github.com/grafana/grafana/pkg/plugins/backendplugin"
 
 	"github.com/grafana/grafana/pkg/api/dtos"
 	"github.com/grafana/grafana/pkg/bus"
-	m "github.com/grafana/grafana/pkg/models"
+	"github.com/grafana/grafana/pkg/models"
 	"github.com/grafana/grafana/pkg/plugins"
 	"github.com/grafana/grafana/pkg/setting"
 )
 
-func (hs *HTTPServer) GetPluginList(c *m.ReqContext) Response {
+func (hs *HTTPServer) GetPluginList(c *models.ReqContext) Response {
 	typeFilter := c.Query("type")
 	enabledFilter := c.Query("enabled")
 	embeddedFilter := c.Query("embedded")
@@ -85,7 +87,7 @@ func (hs *HTTPServer) GetPluginList(c *m.ReqContext) Response {
 	return JSON(200, result)
 }
 
-func GetPluginSettingByID(c *m.ReqContext) Response {
+func GetPluginSettingByID(c *models.ReqContext) Response {
 	pluginID := c.Params(":pluginId")
 
 	def, exists := plugins.Plugins[pluginID]
@@ -108,9 +110,9 @@ func GetPluginSettingByID(c *m.ReqContext) Response {
 		State:         def.State,
 	}
 
-	query := m.GetPluginSettingByIdQuery{PluginId: pluginID, OrgId: c.OrgId}
+	query := models.GetPluginSettingByIdQuery{PluginId: pluginID, OrgId: c.OrgId}
 	if err := bus.Dispatch(&query); err != nil {
-		if err != m.ErrPluginSettingNotFound {
+		if err != models.ErrPluginSettingNotFound {
 			return Error(500, "Failed to get login settings", nil)
 		}
 	} else {
@@ -122,7 +124,7 @@ func GetPluginSettingByID(c *m.ReqContext) Response {
 	return JSON(200, dto)
 }
 
-func UpdatePluginSetting(c *m.ReqContext, cmd m.UpdatePluginSettingCmd) Response {
+func UpdatePluginSetting(c *models.ReqContext, cmd models.UpdatePluginSettingCmd) Response {
 	pluginID := c.Params(":pluginId")
 
 	cmd.OrgId = c.OrgId
@@ -139,7 +141,7 @@ func UpdatePluginSetting(c *m.ReqContext, cmd m.UpdatePluginSettingCmd) Response
 	return Success("Plugin settings updated")
 }
 
-func GetPluginDashboards(c *m.ReqContext) Response {
+func GetPluginDashboards(c *models.ReqContext) Response {
 	pluginID := c.Params(":pluginId")
 
 	list, err := plugins.GetPluginDashboards(c.OrgId, pluginID)
@@ -154,7 +156,7 @@ func GetPluginDashboards(c *m.ReqContext) Response {
 	return JSON(200, list)
 }
 
-func GetPluginMarkdown(c *m.ReqContext) Response {
+func GetPluginMarkdown(c *models.ReqContext) Response {
 	pluginID := c.Params(":pluginId")
 	name := c.Params(":name")
 
@@ -180,7 +182,7 @@ func GetPluginMarkdown(c *m.ReqContext) Response {
 	return resp
 }
 
-func ImportDashboard(c *m.ReqContext, apiCmd dtos.ImportDashboardCommand) Response {
+func ImportDashboard(c *models.ReqContext, apiCmd dtos.ImportDashboardCommand) Response {
 	if apiCmd.PluginId == "" && apiCmd.Dashboard == nil {
 		return Error(422, "Dashboard must be set", nil)
 	}
@@ -204,7 +206,7 @@ func ImportDashboard(c *m.ReqContext, apiCmd dtos.ImportDashboardCommand) Respon
 }
 
 // /api/plugins/:pluginId/health
-func (hs *HTTPServer) CheckHealth(c *m.ReqContext) Response {
+func (hs *HTTPServer) CheckHealth(c *models.ReqContext) Response {
 	pluginID := c.Params("pluginId")
 	resp, err := hs.BackendPluginManager.CheckHealth(c.Req.Context(), pluginID)
 	if err != nil {
@@ -236,21 +238,45 @@ func (hs *HTTPServer) CheckHealth(c *m.ReqContext) Response {
 }
 
 // /api/plugins/:pluginId/resources/*
-func (hs *HTTPServer) CallResource(c *m.ReqContext) Response {
+func (hs *HTTPServer) CallResource(c *models.ReqContext) Response {
 	pluginID := c.Params("pluginId")
-	_, exists := plugins.Plugins[pluginID]
+	plugin, exists := plugins.Plugins[pluginID]
 	if !exists {
 		return Error(404, "Plugin not found, no installed plugin with that id", nil)
 	}
 
+	var jsonDataBytes []byte
+	var decryptedSecureJSONData map[string]string
+	var updated time.Time
+
+	ps, err := hs.getCachedPluginSettings(pluginID, c.SignedInUser)
+	if err != nil {
+		if err != models.ErrPluginSettingNotFound {
+			return Error(500, "Failed to get plugin settings", err)
+		}
+	} else {
+		jsonDataBytes, err = json.Marshal(&ps.JsonData)
+		if err != nil {
+			return Error(500, "Failed to marshal JSON data to bytes", err)
+		}
+
+		decryptedSecureJSONData = ps.DecryptedValues()
+		updated = ps.Updated
+	}
+
 	body, err := c.Req.Body().Bytes()
 	if err != nil {
 		return Error(500, "Failed to read request body", err)
 	}
+
 	req := backendplugin.CallResourceRequest{
 		Config: backendplugin.PluginConfig{
-			OrgID:    c.OrgId,
-			PluginID: pluginID,
+			OrgID:                   c.OrgId,
+			PluginID:                plugin.Id,
+			PluginType:              plugin.Type,
+			JSONData:                jsonDataBytes,
+			DecryptedSecureJSONData: decryptedSecureJSONData,
+			Updated:                 updated,
 		},
 		Path:    c.Params("*"),
 		Method:  c.Req.Method,
@@ -273,3 +299,22 @@ func (hs *HTTPServer) CallResource(c *m.ReqContext) Response {
 		header: resp.Headers,
 	}
 }
+
+func (hs *HTTPServer) getCachedPluginSettings(pluginID string, user *models.SignedInUser) (*models.PluginSetting, error) {
+	cacheKey := "plugin-setting-" + pluginID
+
+	if cached, found := hs.CacheService.Get(cacheKey); found {
+		ps := cached.(*models.PluginSetting)
+		if ps.OrgId == user.OrgId {
+			return ps, nil
+		}
+	}
+
+	query := models.GetPluginSettingByIdQuery{PluginId: pluginID, OrgId: user.OrgId}
+	if err := hs.Bus.Dispatch(&query); err != nil {
+		return nil, err
+	}
+
+	hs.CacheService.Set(cacheKey, query.Result, time.Second*5)
+	return query.Result, nil
+}

pkg/models/plugin_setting_cache.go

+package models
+
+var pluginSettingDecryptionCache = secureJSONDecryptionCache{
+	cache: make(map[int64]cachedDecryptedJSON),
+}
+
+// DecryptedValues returns cached decrypted values from secureJsonData.
+func (ps *PluginSetting) DecryptedValues() map[string]string {
+	pluginSettingDecryptionCache.Lock()
+	defer pluginSettingDecryptionCache.Unlock()
+
+	if item, present := pluginSettingDecryptionCache.cache[ps.Id]; present && ps.Updated.Equal(item.updated) {
+		return item.json
+	}
+
+	json := ps.SecureJsonData.Decrypt()
+	pluginSettingDecryptionCache.cache[ps.Id] = cachedDecryptedJSON{
+		updated: ps.Updated,
+		json:    json,
+	}
+
+	return json
+}
+
+// DecryptedValue returns cached decrypted value from cached secureJsonData.
+func (ps *PluginSetting) DecryptedValue(key string) (string, bool) {
+	value, exists := ps.DecryptedValues()[key]
+	return value, exists
+}
+
+// ClearPluginSettingDecryptionCache clears the datasource decryption cache.
+func ClearPluginSettingDecryptionCache() {
+	pluginSettingDecryptionCache.Lock()
+	defer pluginSettingDecryptionCache.Unlock()
+
+	pluginSettingDecryptionCache.cache = make(map[int64]cachedDecryptedJSON)
+}

pkg/models/plugin_setting_cache_test.go

+package models
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/grafana/grafana/pkg/components/securejsondata"
+)
+
+func TestPluginSettingDecryptionCache(t *testing.T) {
+	t.Run("When plugin settings hasn't been updated, encrypted JSON should be fetched from cache", func(t *testing.T) {
+		ClearPluginSettingDecryptionCache()
+
+		ps := PluginSetting{
+			Id:       1,
+			JsonData: map[string]interface{}{},
+			SecureJsonData: securejsondata.GetEncryptedJsonData(map[string]string{
+				"password": "password",
+			}),
+		}
+
+		// Populate cache
+		password, ok := ps.DecryptedValue("password")
+		require.Equal(t, "password", password)
+		require.True(t, ok)
+
+		ps.SecureJsonData = securejsondata.GetEncryptedJsonData(map[string]string{
+			"password": "",
+		})
+
+		require.Equal(t, "password", password)
+		require.True(t, ok)
+	})
+
+	t.Run("When plugin settings is updated, encrypted JSON should not be fetched from cache", func(t *testing.T) {
+		ClearPluginSettingDecryptionCache()
+
+		ps := PluginSetting{
+			Id:       1,
+			JsonData: map[string]interface{}{},
+			SecureJsonData: securejsondata.GetEncryptedJsonData(map[string]string{
+				"password": "password",
+			}),
+		}
+
+		// Populate cache
+		password, ok := ps.DecryptedValue("password")
+		require.Equal(t, "password", password)
+		require.True(t, ok)
+
+		ps.SecureJsonData = securejsondata.GetEncryptedJsonData(map[string]string{
+			"password": "",
+		})
+		ps.Updated = time.Now()
+
+		password, ok = ps.DecryptedValue("password")
+		require.Empty(t, password)
+		require.True(t, ok)
+	})
+}

pkg/plugins/backendplugin/backend_plugin.go

@@ -6,6 +6,7 @@ import (
 	"errors"
 	"fmt"
 	"net/http"
+	"time"
 
 	"github.com/grafana/grafana-plugin-sdk-go/genproto/pluginv2"
 	"github.com/prometheus/client_golang/prometheus"
@@ -205,13 +206,33 @@ func (p *BackendPlugin) callResource(ctx context.Context, req CallResourceReques
 	}
 
 	protoReq := &pluginv2.CallResource_Request{
-		Config:  &pluginv2.PluginConfig{},
+		Config: &pluginv2.PluginConfig{
+			OrgId:                   req.Config.OrgID,
+			PluginId:                req.Config.PluginID,
+			PluginType:              req.Config.PluginType,
+			JsonData:                req.Config.JSONData,
+			DecryptedSecureJsonData: req.Config.DecryptedSecureJSONData,
+			UpdatedMS:               req.Config.Updated.UnixNano() / int64(time.Millisecond),
+		},
 		Path:    req.Path,
 		Method:  req.Method,
 		Url:     req.URL,
 		Headers: reqHeaders,
 		Body:    req.Body,
 	}
+
+	if req.Config.DataSourceConfig != nil {
+		protoReq.Config.DatasourceConfig = &pluginv2.DataSourceConfig{
+			Id:               req.Config.DataSourceConfig.ID,
+			Name:             req.Config.DataSourceConfig.Name,
+			Url:              req.Config.DataSourceConfig.URL,
+			Database:         req.Config.DataSourceConfig.Database,
+			User:             req.Config.DataSourceConfig.User,
+			BasicAuthEnabled: req.Config.DataSourceConfig.BasicAuthEnabled,
+			BasicAuthUser:    req.Config.DataSourceConfig.BasicAuthUser,
+		}
+	}
+
 	protoResp, err := p.core.CallResource(ctx, protoReq)
 	if err != nil {
 		if st, ok := status.FromError(err); ok {

pkg/plugins/backendplugin/contracts.go

@@ -3,6 +3,7 @@ package backendplugin
 import (
 	"encoding/json"
 	"strconv"
+	"time"
 
 	"github.com/grafana/grafana-plugin-sdk-go/genproto/pluginv2"
 )
@@ -54,18 +55,24 @@ func checkHealthResultFromProto(protoResp *pluginv2.CheckHealth_Response) *Check
 	}
 }
 
-type PluginInstance struct {
-	ID       int64
-	Name     string
-	Type     string
-	URL      string
-	JSONData json.RawMessage
+type DataSourceConfig struct {
+	ID               int64
+	Name             string
+	URL              string
+	User             string
+	Database         string
+	BasicAuthEnabled bool
+	BasicAuthUser    string
 }
 
 type PluginConfig struct {
-	PluginID string
-	OrgID    int64
-	Instance *PluginInstance
+	OrgID                   int64
+	PluginID                string
+	PluginType              string
+	JSONData                json.RawMessage
+	DecryptedSecureJSONData map[string]string
+	Updated                 time.Time
+	DataSourceConfig        *DataSourceConfig
 }
 
 type CallResourceRequest struct {

pkg/plugins/datasource/wrapper/datasource_plugin_wrapper_v2.go

@@ -2,6 +2,7 @@ package wrapper
 
 import (
 	"context"
+	"time"
 
 	"github.com/grafana/grafana/pkg/plugins/backendplugin"
 
@@ -12,30 +13,40 @@ import (
 	"github.com/grafana/grafana/pkg/tsdb"
 )
 
-func NewDatasourcePluginWrapperV2(log log.Logger, plugin backendplugin.DatasourcePlugin) *DatasourcePluginWrapperV2 {
-	return &DatasourcePluginWrapperV2{DatasourcePlugin: plugin, logger: log}
+func NewDatasourcePluginWrapperV2(log log.Logger, pluginId, pluginType string, plugin backendplugin.DatasourcePlugin) *DatasourcePluginWrapperV2 {
+	return &DatasourcePluginWrapperV2{DatasourcePlugin: plugin, logger: log, pluginId: pluginId, pluginType: pluginType}
 }
 
 type DatasourcePluginWrapperV2 struct {
 	backendplugin.DatasourcePlugin
-	logger log.Logger
+	logger     log.Logger
+	pluginId   string
+	pluginType string
 }
 
 func (tw *DatasourcePluginWrapperV2) Query(ctx context.Context, ds *models.DataSource, query *tsdb.TsdbQuery) (*tsdb.Response, error) {
-	jsonData, err := ds.JsonData.MarshalJSON()
+	jsonDataBytes, err := ds.JsonData.MarshalJSON()
 	if err != nil {
 		return nil, err
 	}
 
 	pbQuery := &pluginv2.DataQueryRequest{
 		Config: &pluginv2.PluginConfig{
-			Name:                    ds.Name,
-			Type:                    ds.Type,
-			Url:                     ds.Url,
-			Id:                      ds.Id,
 			OrgId:                   ds.OrgId,
-			JsonData:                string(jsonData),
-			DecryptedSecureJsonData: ds.SecureJsonData.Decrypt(),
+			PluginId:                tw.pluginId,
+			PluginType:              tw.pluginType,
+			UpdatedMS:               ds.Updated.UnixNano() / int64(time.Millisecond),
+			JsonData:                jsonDataBytes,
+			DecryptedSecureJsonData: ds.DecryptedValues(),
+			DatasourceConfig: &pluginv2.DataSourceConfig{
+				Id:               ds.Id,
+				Name:             ds.Name,
+				Url:              ds.Url,
+				Database:         ds.Database,
+				User:             ds.User,
+				BasicAuthEnabled: ds.BasicAuth,
+				BasicAuthUser:    ds.BasicAuthUser,
+			},
 		},
 		Queries: []*pluginv2.DataQuery{},
 	}

pkg/plugins/datasource_plugin.go

@@ -70,7 +70,7 @@ func (p *DataSourcePlugin) onLegacyPluginStart(pluginID string, client *backendp
 func (p *DataSourcePlugin) onPluginStart(pluginID string, client *backendplugin.Client, logger log.Logger) error {
 	if client.DatasourcePlugin != nil {
 		tsdb.RegisterTsdbQueryEndpoint(pluginID, func(dsInfo *models.DataSource) (tsdb.TsdbQueryEndpoint, error) {
-			return wrapper.NewDatasourcePluginWrapperV2(logger, client.DatasourcePlugin), nil
+			return wrapper.NewDatasourcePluginWrapperV2(logger, p.Id, p.Type, client.DatasourcePlugin), nil
 		})
 	}
 

pkg/plugins/transform_plugin.go

@@ -55,7 +55,7 @@ func (p *TransformPlugin) onPluginStart(pluginID string, client *backendplugin.C
 
 	if client.DatasourcePlugin != nil {
 		tsdb.RegisterTsdbQueryEndpoint(pluginID, func(dsInfo *models.DataSource) (tsdb.TsdbQueryEndpoint, error) {
-			return wrapper.NewDatasourcePluginWrapperV2(logger, client.DatasourcePlugin), nil
+			return wrapper.NewDatasourcePluginWrapperV2(logger, p.Id, p.Type, client.DatasourcePlugin), nil
 		})
 	}
 
@@ -122,9 +122,15 @@ func (s *transformCallback) DataQuery(ctx context.Context, req *pluginv2.DataQue
 		return nil, fmt.Errorf("zero queries found in datasource request")
 	}
 
+	datasourceID := int64(0)
+
+	if req.Config.DatasourceConfig != nil {
+		datasourceID = req.Config.DatasourceConfig.Id
+	}
+
 	getDsInfo := &models.GetDataSourceByIdQuery{
-		Id:    req.Config.Id,
 		OrgId: req.Config.OrgId,
+		Id:    datasourceID,
 	}
 
 	if err := bus.Dispatch(getDsInfo); err != nil {

vendor/github.com/grafana/grafana-plugin-sdk-go/dataframe/dataframe.go

@@ -27,6 +27,46 @@ type Field struct {
 // Fields is a slice of Field pointers.
 type Fields []*Field
 
+// AppendRow adds a new row to the Frame by appending to each element of vals to
+// the corresponding Field in the dataframe.
+// The dataframe's Fields and the Fields' Vectors must be initalized or AppendRow will panic.
+// The number of arguments must match the number of Fields in the Frame and each type must coorespond
+// to the Field type or AppendRow will panic.
+func (f *Frame) AppendRow(vals ...interface{}) {
+	for i, v := range vals {
+		f.Fields[i].Vector.Append(v)
+	}
+}
+
+// AppendRowSafe adds a new row to the Frame by appending to each each element of vals to
+// the corresponding Field in the dataframe. It has the some constraints as AppendRow but will
+// return an error under those conditions instead of panicing.
+func (f *Frame) AppendRowSafe(vals ...interface{}) error {
+	if len(vals) != len(f.Fields) {
+		return fmt.Errorf("failed to append vals to Frame. Frame has %v fields but was given %v to append", len(f.Fields), len(vals))
+	}
+	// check validity before any modification
+	for i, v := range vals {
+		if f.Fields[i] == nil {
+			return fmt.Errorf("can not append to uninitalized Field at field index %v", i)
+		}
+		if f.Fields[i].Vector == nil {
+			return fmt.Errorf("can not append to uninitalized Field Vector at field index %v", i)
+		}
+		dfPType := f.Fields[i].Vector.PrimitiveType()
+		if v == nil {
+			if !dfPType.Nullable() {
+				return fmt.Errorf("can not append nil to non-nullable vector with underlying type %s at field index %v", dfPType, i)
+			}
+		}
+		if v != nil && pTypeFromVal(v) != dfPType {
+			return fmt.Errorf("invalid type appending row at index %v, got %T want %v", i, v, dfPType.ItemTypeString())
+		}
+		f.Fields[i].Vector.Append(v)
+	}
+	return nil
+}
+
 // NewField returns a new instance of Field.
 func NewField(name string, labels Labels, values interface{}) *Field {
 	var vec Vector

vendor/github.com/grafana/grafana-plugin-sdk-go/dataframe/generic_nullable_vector.go

@@ -14,6 +14,10 @@ func (v *nullablegenVector) Set(idx int, i interface{}) {
 }
 
 func (v *nullablegenVector) Append(i interface{}) {
+	if i == nil {
+		(*v) = append((*v), nil)
+		return
+	}
 	(*v) = append((*v), i.(*gen))
 }
 
@@ -21,6 +25,10 @@ func (v *nullablegenVector) At(i int) interface{} {
 	return (*v)[i]
 }
 
+func (v *nullablegenVector) PointerAt(i int) interface{} {
+	return &(*v)[i]
+}
+
 func (v *nullablegenVector) Len() int {
 	return len((*v))
 }
@@ -28,3 +36,7 @@ func (v *nullablegenVector) Len() int {
 func (v *nullablegenVector) PrimitiveType() VectorPType {
 	return vectorPType(v)
 }
+
+func (v *nullablegenVector) Extend(i int) {
+	(*v) = append((*v), make([]*gen, i)...)
+}

vendor/github.com/grafana/grafana-plugin-sdk-go/dataframe/generic_vector.go

@@ -27,6 +27,10 @@ func (v *genVector) At(i int) interface{} {
 	return (*v)[i]
 }
 
+func (v *genVector) PointerAt(i int) interface{} {
+	return &(*v)[i]
+}
+
 func (v *genVector) Len() int {
 	return len((*v))
 }
@@ -34,3 +38,7 @@ func (v *genVector) Len() int {
 func (v *genVector) PrimitiveType() VectorPType {
 	return vectorPType(v)
 }
+
+func (v *genVector) Extend(i int) {
+	(*v) = append((*v), make([]gen, i)...)
+}

vendor/github.com/grafana/grafana-plugin-sdk-go/dataframe/sql.go

+package dataframe
+
+import (
+	"database/sql"
+	"fmt"
+	"reflect"
+)
+
+// NewFromSQLRows returns a new dataframe populated with the data from rows. The Field Vector types
+// will be Vectors of pointer types, []*T, if the SQL column is nullable or if the nullable property is unknown.
+// Otherwise, they will be []T types.
+//
+// Fields will be named to match name of the SQL columns and the SQL column names must be unique (https://github.com/grafana/grafana-plugin-sdk-go/issues/59).
+//
+// All the types must be supported by the dataframe or a SQLStringConverter will be created and
+// the resulting Field Vector type will be of type []*string.
+//
+// The SQLStringConverter's ConversionFunc will be applied to matching rows if it is not nil.
+// Additionally, if the SQLStringConverter's Replacer is not nil, the replacement will be performed.
+// A map of Field/Column index to the corresponding SQLStringConverter is returned so what conversions were
+// done can be inspected.
+func NewFromSQLRows(rows *sql.Rows, converters ...SQLStringConverter) (*Frame, map[int]SQLStringConverter, error) {
+	frame, mappers, err := newForSQLRows(rows, converters...)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	for rows.Next() {
+		sRow := frame.newScannableRow()
+		err := rows.Scan(sRow...)
+		if err != nil {
+			return nil, nil, err
+		}
+	}
+
+	for fieldIdx, mapper := range mappers {
+		if mapper.ConversionFunc == nil {
+			continue
+		}
+		vec := frame.Fields[fieldIdx]
+		for i := 0; i < vec.Len(); i++ {
+			v, err := mapper.ConversionFunc(vec.Vector.At(i).(*string))
+			if err != nil {
+				return nil, nil, err
+			}
+			vec.Vector.Set(i, v)
+		}
+		if mapper.Replacer == nil {
+			continue
+		}
+		if err := Replace(frame, fieldIdx, mapper.Replacer); err != nil {
+			return nil, nil, err
+		}
+	}
+
+	return frame, mappers, nil
+}
+
+// newForSQLRows creates a new Frame appropriate for scanning SQL rows with
+// the the new Frame's ScannableRow() method.
+func newForSQLRows(rows *sql.Rows, converters ...SQLStringConverter) (*Frame, map[int]SQLStringConverter, error) {
+	mapping := make(map[int]SQLStringConverter)
+	colTypes, err := rows.ColumnTypes()
+	if err != nil {
+		return nil, nil, err
+	}
+	colNames, err := rows.Columns()
+	if err != nil {
+		return nil, nil, err
+	}
+	// In the future we can probably remove this restriction. But right now we map names to Arrow Field Names.
+	// Arrow Field names must be unique: https://github.com/grafana/grafana-plugin-sdk-go/issues/59
+	seen := map[string]int{}
+	for i, name := range colNames {
+		if j, ok := seen[name]; ok {
+			return nil, nil, fmt.Errorf(`duplicate column names are not allowed, found identical name "%v" at column indices %v and %v`, name, j, i)
+		}
+		seen[name] = i
+	}
+	frame := &Frame{}
+	for i, colType := range colTypes {
+		colName := colNames[i]
+		nullable, ok := colType.Nullable()
+		if !ok {
+			nullable = true // If we don't know if it is nullable, assume it is
+		}
+		scanType := colType.ScanType()
+		for _, converter := range converters {
+			if converter.InputScanKind == scanType.Kind() && converter.InputTypeName == colType.DatabaseTypeName() {
+				nullable = true // String converters are always nullable
+				scanType = reflect.TypeOf("")
+				mapping[i] = converter
+			}
+		}
+		var vec interface{}
+		if !nullable {
+			vec = reflect.MakeSlice(reflect.SliceOf(scanType), 0, 0).Interface()
+		} else {
+			ptrType := reflect.TypeOf(reflect.New(scanType).Interface())
+			// Nullabe types get passed to scan as a pointer to a pointer
+			vec = reflect.MakeSlice(reflect.SliceOf(ptrType), 0, 0).Interface()
+		}
+		if !ValidVectorType(vec) {
+			// Automatically create string mapper if we end up with an unsupported type
+			mapping[i] = SQLStringConverter{
+				Name:          fmt.Sprintf("Autogenerated for column %v", i),
+				InputTypeName: colType.DatabaseTypeName(),
+				InputScanKind: colType.ScanType().Kind(),
+			}
+			ptrType := reflect.TypeOf(reflect.New(reflect.TypeOf("")).Interface())
+			vec = reflect.MakeSlice(reflect.SliceOf(ptrType), 0, 0).Interface()
+		}
+		frame.Fields = append(frame.Fields, NewField(colName, nil, vec))
+	}
+	return frame, mapping, nil
+}
+
+// newScannableRow adds a row to the dataframe by extending each Field's Vector. It returns
+// a slice of references that can be passed to the database/sql rows.Scan() to scan directly into
+// the extended Vectors of the dataframe.
+func (f *Frame) newScannableRow() []interface{} {
+	row := make([]interface{}, len(f.Fields))
+	for i, field := range f.Fields {
+		vec := field.Vector
+		vec.Extend(1)
+		// non-nullable fields will be *T, and nullable fields will be **T
+		vecItemPointer := vec.PointerAt(vec.Len() - 1)
+		row[i] = vecItemPointer
+	}
+	return row
+}
+
+// SQLStringConverter can be used to store types not supported by
+// a dataframe into a *string. When scanning, if a SQL's row's InputScanType's Kind
+// and InputScanKind match that returned by the sql response, then the
+// conversion func will be run on the row.
+type SQLStringConverter struct {
+	// Name is an optional property that can be used to identify a converter
+	Name          string
+	InputScanKind reflect.Kind // reflect.Type might better or worse option?
+	InputTypeName string
+
+	// Conversion func may be nil to do no additional operations on the string conversion.
+	ConversionFunc func(in *string) (*string, error)
+
+	// If the Replacer is not nil, the replacement will be performed.
+	Replacer *StringFieldReplacer
+}
+
+// Note: SQLStringConverter is perhaps better understood as []byte. However, currently
+// the Vector type ([][]byte) is not supported. https://github.com/grafana/grafana-plugin-sdk-go/issues/57
+
+// StringFieldReplacer is used to replace a *string Field in a dataframe. The type
+// returned by the ReplaceFunc must match the type of elements of VectorType.
+// Both properties must be non-nil.
+type StringFieldReplacer struct {
+	VectorType  interface{}
+	ReplaceFunc func(in *string) (interface{}, error)
+}
+
+// Replace will replace a *string Vector of the specified Field's index
+// using the StringFieldReplacer.
+func Replace(frame *Frame, fieldIdx int, replacer *StringFieldReplacer) error {
+	if fieldIdx > len(frame.Fields) {
+		return fmt.Errorf("fieldIdx is out of bounds, field len: %v", len(frame.Fields))
+	}
+	field := frame.Fields[fieldIdx]
+	if field.Vector.PrimitiveType() != VectorPTypeNullableString {
+		return fmt.Errorf("can only replace []*string vectors, vector is of type %s", field.Vector.PrimitiveType())
+	}
+
+	if !ValidVectorType(replacer.VectorType) {
+		return fmt.Errorf("can not replace column with unsupported type %T", replacer.VectorType)
+	}
+	newVector := newVector(replacer.VectorType, field.Vector.Len())
+	for i := 0; i < newVector.Len(); i++ {
+		oldVal := field.Vector.At(i).(*string) // Vector type is checked earlier above
+		newVal, err := replacer.ReplaceFunc(oldVal)
+		if err != nil {
+			return err
+		}
+		newVector.Set(i, newVal)
+	}
+	field.Vector = newVector
+	return nil
+}

vendor/github.com/grafana/grafana-plugin-sdk-go/dataframe/vector.gen.go

@@ -27,6 +27,10 @@ func (v *uint8Vector) At(i int) interface{} {
 	return (*v)[i]
 }
 
+func (v *uint8Vector) PointerAt(i int) interface{} {
+	return &(*v)[i]
+}
+
 func (v *uint8Vector) Len() int {
 	return len((*v))
 }
@@ -35,6 +39,10 @@ func (v *uint8Vector) PrimitiveType() VectorPType {
 	return vectorPType(v)
 }
 
+func (v *uint8Vector) Extend(i int) {
+	(*v) = append((*v), make([]uint8, i)...)
+}
+
 //go:Uint16erate uint16ny -in=$GOFILE -out=vector.Uint16.go uint16 "Uint16=uint8,uint16,uint32,uint64,int8,int16,int32,int64,float32,float64,string,bool,time.Time"
 
 type uint16Vector []uint16
@@ -56,6 +64,10 @@ func (v *uint16Vector) At(i int) interface{} {
 	return (*v)[i]
 }
 
+func (v *uint16Vector) PointerAt(i int) interface{} {
+	return &(*v)[i]
+}
+
 func (v *uint16Vector) Len() int {
 	return len((*v))
 }
@@ -64,6 +76,10 @@ func (v *uint16Vector) PrimitiveType() VectorPType {
 	return vectorPType(v)
 }
 
+func (v *uint16Vector) Extend(i int) {
+	(*v) = append((*v), make([]uint16, i)...)
+}
+
 //go:Uint32erate uint32ny -in=$GOFILE -out=vector.Uint32.go uint32 "Uint32=uint8,uint16,uint32,uint64,int8,int16,int32,int64,float32,float64,string,bool,time.Time"
 
 type uint32Vector []uint32
@@ -85,6 +101,10 @@ func (v *uint32Vector) At(i int) interface{} {
 	return (*v)[i]
 }
 
+func (v *uint32Vector) PointerAt(i int) interface{} {
+	return &(*v)[i]
+}
+
 func (v *uint32Vector) Len() int {
 	return len((*v))
 }
@@ -93,6 +113,10 @@ func (v *uint32Vector) PrimitiveType() VectorPType {
 	return vectorPType(v)
 }
 
+func (v *uint32Vector) Extend(i int) {
+	(*v) = append((*v), make([]uint32, i)...)
+}
+
 //go:Uint64erate uint64ny -in=$GOFILE -out=vector.Uint64.go uint64 "Uint64=uint8,uint16,uint32,uint64,int8,int16,int32,int64,float32,float64,string,bool,time.Time"
 
 type uint64Vector []uint64
@@ -114,6 +138,10 @@ func (v *uint64Vector) At(i int) interface{} {
 	return (*v)[i]
 }
 
+func (v *uint64Vector) PointerAt(i int) interface{} {
+	return &(*v)[i]
+}
+
 func (v *uint64Vector) Len() int {
 	return len((*v))
 }
@@ -122,6 +150,10 @@ func (v *uint64Vector) PrimitiveType() VectorPType {
 	return vectorPType(v)
 }
 
+func (v *uint64Vector) Extend(i int) {
+	(*v) = append((*v), make([]uint64, i)...)
+}
+
 //go:Int8erate int8ny -in=$GOFILE -out=vector.Int8.go int8 "Int8=uint8,uint16,uint32,uint64,int8,int16,int32,int64,float32,float64,string,bool,time.Time"
 
 type int8Vector []int8
@@ -143,6 +175,10 @@ func (v *int8Vector) At(i int) interface{} {
 	return (*v)[i]
 }
 
+func (v *int8Vector) PointerAt(i int) interface{} {
+	return &(*v)[i]
+}
+
 func (v *int8Vector) Len() int {
 	return len((*v))
 }
@@ -151,6 +187,10 @@ func (v *int8Vector) PrimitiveType() VectorPType {
 	return vectorPType(v)
 }
 
+func (v *int8Vector) Extend(i int) {
+	(*v) = append((*v), make([]int8, i)...)
+}
+
 //go:Int16erate int16ny -in=$GOFILE -out=vector.Int16.go int16 "Int16=uint8,uint16,uint32,uint64,int8,int16,int32,int64,float32,float64,string,bool,time.Time"
 
 type int16Vector []int16
@@ -172,6 +212,10 @@ func (v *int16Vector) At(i int) interface{} {
 	return (*v)[i]
 }
 
+func (v *int16Vector) PointerAt(i int) interface{} {
+	return &(*v)[i]
+}
+
 func (v *int16Vector) Len() int {
 	return len((*v))
 }
@@ -180,6 +224,10 @@ func (v *int16Vector) PrimitiveType() VectorPType {
 	return vectorPType(v)
 }
 
+func (v *int16Vector) Extend(i int) {
+	(*v) = append((*v), make([]int16, i)...)
+}
+
 //go:Int32erate int32ny -in=$GOFILE -out=vector.Int32.go int32 "Int32=uint8,uint16,uint32,uint64,int8,int16,int32,int64,float32,float64,string,bool,time.Time"
 
 type int32Vector []int32
@@ -201,6 +249,10 @@ func (v *int32Vector) At(i int) interface{} {
 	return (*v)[i]
 }
 
+func (v *int32Vector) PointerAt(i int) interface{} {
+	return &(*v)[i]
+}
+
 func (v *int32Vector) Len() int {
 	return len((*v))
 }
@@ -209,6 +261,10 @@ func (v *int32Vector) PrimitiveType() VectorPType {
 	return vectorPType(v)
 }
 
+func (v *int32Vector) Extend(i int) {
+	(*v) = append((*v), make([]int32, i)...)
+}
+
 //go:Int64erate int64ny -in=$GOFILE -out=vector.Int64.go int64 "Int64=uint8,uint16,uint32,uint64,int8,int16,int32,int64,float32,float64,string,bool,time.Time"
 
 type int64Vector []int64
@@ -230,6 +286,10 @@ func (v *int64Vector) At(i int) interface{} {
 	return (*v)[i]
 }
 
+func (v *int64Vector) PointerAt(i int) interface{} {
+	return &(*v)[i]
+}
+
 func (v *int64Vector) Len() int {
 	return len((*v))
 }
@@ -238,6 +298,10 @@ func (v *int64Vector) PrimitiveType() VectorPType {
 	return vectorPType(v)
 }
 
+func (v *int64Vector) Extend(i int) {
+	(*v) = append((*v), make([]int64, i)...)
+}
+
 //go:Float32erate float32ny -in=$GOFILE -out=vector.Float32.go float32 "Float32=uint8,uint16,uint32,uint64,int8,int16,int32,int64,float32,float64,string,bool,time.Time"
 
 type float32Vector []float32
@@ -259,6 +323,10 @@ func (v *float32Vector) At(i int) interface{} {
 	return (*v)[i]
 }
 
+func (v *float32Vector) PointerAt(i int) interface{} {
+	return &(*v)[i]
+}
+
 func (v *float32Vector) Len() int {
 	return len((*v))
 }
@@ -267,6 +335,10 @@ func (v *float32Vector) PrimitiveType() VectorPType {
 	return vectorPType(v)
 }
 
+func (v *float32Vector) Extend(i int) {
+	(*v) = append((*v), make([]float32, i)...)
+}
+
 //go:Float64erate float64ny -in=$GOFILE -out=vector.Float64.go float64 "Float64=uint8,uint16,uint32,uint64,int8,int16,int32,int64,float32,float64,string,bool,time.Time"
 
 type float64Vector []float64
@@ -288,6 +360,10 @@ func (v *float64Vector) At(i int) interface{} {
 	return (*v)[i]
 }
 
+func (v *float64Vector) PointerAt(i int) interface{} {
+	return &(*v)[i]
+}
+
 func (v *float64Vector) Len() int {
 	return len((*v))
 }
@@ -296,6 +372,10 @@ func (v *float64Vector) PrimitiveType() VectorPType {
 	return vectorPType(v)
 }
 
+func (v *float64Vector) Extend(i int) {
+	(*v) = append((*v), make([]float64, i)...)
+}
+
 //go:Stringerate stringny -in=$GOFILE -out=vector.String.go string "String=uint8,uint16,uint32,uint64,int8,int16,int32,int64,float32,float64,string,bool,time.Time"
 
 type stringVector []string
@@ -317,6 +397,10 @@ func (v *stringVector) At(i int) interface{} {
 	return (*v)[i]
 }
 
+func (v *stringVector) PointerAt(i int) interface{} {
+	return &(*v)[i]
+}
+
 func (v *stringVector) Len() int {
 	return len((*v))
 }
@@ -325,6 +409,10 @@ func (v *stringVector) PrimitiveType() VectorPType {
 	return vectorPType(v)
 }
 
+func (v *stringVector) Extend(i int) {
+	(*v) = append((*v), make([]string, i)...)
+}
+
 //go:Boolerate boolny -in=$GOFILE -out=vector.Bool.go bool "Bool=uint8,uint16,uint32,uint64,int8,int16,int32,int64,float32,float64,string,bool,time.Time"
 
 type boolVector []bool
@@ -346,6 +434,10 @@ func (v *boolVector) At(i int) interface{} {
 	return (*v)[i]
 }
 
+func (v *boolVector) PointerAt(i int) interface{} {
+	return &(*v)[i]
+}
+
 func (v *boolVector) Len() int {
 	return len((*v))
 }
@@ -354,6 +446,10 @@ func (v *boolVector) PrimitiveType() VectorPType {
 	return vectorPType(v)
 }
 
+func (v *boolVector) Extend(i int) {
+	(*v) = append((*v), make([]bool, i)...)
+}
+
 //go:TimeTimeerate timeTimeny -in=$GOFILE -out=vector.TimeTime.go time.Time "TimeTime=uint8,uint16,uint32,uint64,int8,int16,int32,int64,float32,float64,string,bool,time.Time"
 
 type timeTimeVector []time.Time
@@ -375,6 +471,10 @@ func (v *timeTimeVector) At(i int) interface{} {
 	return (*v)[i]
 }
 
+func (v *timeTimeVector) PointerAt(i int) interface{} {
+	return &(*v)[i]
+}
+
 func (v *timeTimeVector) Len() int {
 	return len((*v))
 }
@@ -382,3 +482,7 @@ func (v *timeTimeVector) Len() int {
 func (v *timeTimeVector) PrimitiveType() VectorPType {
 	return vectorPType(v)
 }
+
+func (v *timeTimeVector) Extend(i int) {
+	(*v) = append((*v), make([]time.Time, i)...)
+}

vendor/github.com/grafana/grafana-plugin-sdk-go/dataframe/vector.go

@@ -9,9 +9,11 @@ import (
 type Vector interface {
 	Set(idx int, i interface{})
 	Append(i interface{})
+	Extend(i int)
 	At(i int) interface{}
 	Len() int
 	PrimitiveType() VectorPType
+	PointerAt(i int) interface{}
 	//buildArrowColumn(pool memory.Allocator, field arrow.Field) *array.Column
 }
 
@@ -81,6 +83,73 @@ func newVector(t interface{}, n int) (v Vector) {
 	return
 }
 
+
+// ValidVectorType returns if a primitive slice is a valid / supported Vector type
+func ValidVectorType(t interface{}) bool {
+	switch t.(type) {
+	// ints
+	case []int8:
+		return true
+	case []*int8:
+		return true
+	case []int16:
+		return true
+	case []*int16:
+		return true
+	case []int32:
+		return true
+	case []*int32:
+		return true
+	case []int64:
+		return true
+	case []*int64:
+		return true
+
+	// uints
+	case []uint8:
+		return true
+	case []*uint8:
+		return true
+	case []uint16:
+		return true
+	case []*uint16:
+		return true
+	case []uint32:
+		return true
+	case []*uint32:
+		return true
+	case []uint64:
+		return true
+	case []*uint64:
+		return true
+
+	// floats
+	case []float32:
+		return true
+	case []*float32:
+		return true
+	case []float64:
+		return true
+	case []*float64:
+		return true
+
+	case []string:
+		return true
+	case []*string:
+		return true
+	case []bool:
+		return true
+	case []*bool:
+		return true
+	case []time.Time:
+		return true
+	case []*time.Time:
+		return true
+	default:
+		return false
+	}
+}
+
 // VectorPType indicates the go type underlying the Vector.
 type VectorPType int
 
@@ -221,3 +290,176 @@ func vectorPType(v Vector) VectorPType {
 
 	return VectorPType(-1)
 }
+
+func pTypeFromVal(v interface{}) VectorPType {
+	switch v.(type) {
+	case int8:
+		return VectorPTypeInt8
+	case *int8:
+		return VectorPTypeNullableInt8
+
+	case int16:
+		return VectorPTypeInt16
+	case *int16:
+		return VectorPTypeNullableInt16
+
+	case int32:
+		return VectorPTypeInt32
+	case *int32:
+		return VectorPTypeNullableInt32
+
+	case int64:
+		return VectorPTypeInt64
+	case *int64:
+		return VectorPTypeNullableInt64
+
+	case uint8:
+		return VectorPTypeUint8
+	case *uint8:
+		return VectorPTypeNullableUint8
+
+	case uint16:
+		return VectorPTypeUint16
+	case *uint16:
+		return VectorPTypeNullableUint16
+
+	case uint32:
+		return VectorPTypeUint32
+	case *uint32:
+		return VectorPTypeNullableUint32
+
+	case uint64:
+		return VectorPTypeUint64
+	case *uint64:
+		return VectorPTypeNullableUint64
+
+	case float32:
+		return VectorPTypeFloat32
+	case *float32:
+		return VectorPTypeNullableFloat32
+
+	case float64:
+		return VectorPTypeFloat64
+	case *float64:
+		return VectorPTypeNullableFloat64
+
+	case string:
+		return VectorPTypeString
+	case *string:
+		return VectorPTypeNullableString
+
+	case bool:
+		return VectorPTypeBool
+	case *bool:
+		return VectorPTypeNullableBool
+
+	case time.Time:
+		return VectorPTypeTime
+	case *time.Time:
+		return VectorPTypeNullableTime
+	}
+	return VectorPType(-1)
+}
+
+func (p VectorPType) String() string {
+	if p < 0 {
+		return "invalid/unsupported"
+	}
+	return fmt.Sprintf("[]%v", p.ItemTypeString())
+
+}
+
+// ItemTypeString returns the string representation of the type of element within in the vector
+func (p VectorPType) ItemTypeString() string {
+	switch p {
+	case VectorPTypeInt8:
+		return "int8"
+	case VectorPTypeNullableInt8:
+		return "*int8"
+
+	case VectorPTypeInt16:
+		return "int16"
+	case VectorPTypeNullableInt16:
+		return "*int16"
+
+	case VectorPTypeInt32:
+		return "int32"
+	case VectorPTypeNullableInt32:
+		return "*int32"
+
+	case VectorPTypeInt64:
+		return "int64"
+	case VectorPTypeNullableInt64:
+		return "*int64"
+
+	case VectorPTypeUint8:
+		return "unit8"
+	case VectorPTypeNullableUint8:
+		return "*uint8"
+
+	case VectorPTypeUint16:
+		return "uint16"
+	case VectorPTypeNullableUint16:
+		return "*uint16"
+
+	case VectorPTypeUint32:
+		return "uint32"
+	case VectorPTypeNullableUint32:
+		return "*uint32"
+
+	case VectorPTypeUint64:
+		return "uint64"
+	case VectorPTypeNullableUint64:
+		return "*uint64"
+
+	case VectorPTypeFloat32:
+		return "float32"
+	case VectorPTypeNullableFloat32:
+		return "*float32"
+
+	case VectorPTypeFloat64:
+		return "float64"
+	case VectorPTypeNullableFloat64:
+		return "*float64"
+
+	case VectorPTypeString:
+		return "string"
+	case VectorPTypeNullableString:
+		return "*string"
+
+	case VectorPTypeBool:
+		return "bool"
+	case VectorPTypeNullableBool:
+		return "*bool"
+
+	case VectorPTypeTime:
+		return "time.Time"
+	case VectorPTypeNullableTime:
+		return "*time.Time"
+	}
+	return "invalid/unsupported type"
+}
+
+// Nullable returns if type is a nullable type
+func (p VectorPType) Nullable() bool {
+	switch p {
+	case VectorPTypeNullableInt8, VectorPTypeNullableInt16, VectorPTypeNullableInt32, VectorPTypeNullableInt64:
+		return true
+
+	case VectorPTypeNullableUint8, VectorPTypeNullableUint16, VectorPTypeNullableUint32, VectorPTypeNullableUint64:
+		return true
+
+	case VectorPTypeNullableFloat32, VectorPTypeNullableFloat64:
+		return true
+
+	case VectorPTypeNullableString:
+		return true
+
+	case VectorPTypeNullableBool:
+		return true
+
+	case VectorPTypeNullableTime:
+		return true
+	}
+	return false
+}

vendor/modules.txt

@@ -148,7 +148,7 @@ github.com/gosimple/slug
 # github.com/grafana/grafana-plugin-model v0.0.0-20190930120109-1fc953a61fb4
 github.com/grafana/grafana-plugin-model/go/datasource
 github.com/grafana/grafana-plugin-model/go/renderer
-# github.com/grafana/grafana-plugin-sdk-go v0.14.0
+# github.com/grafana/grafana-plugin-sdk-go v0.16.0
 github.com/grafana/grafana-plugin-sdk-go/backend/plugin
 github.com/grafana/grafana-plugin-sdk-go/dataframe
 github.com/grafana/grafana-plugin-sdk-go/genproto/pluginv2