InfluxDB: Upgrade InfluxDB in devenv (#26983)

* InfluxDB: Upgrade InfluxDB in devenv
* InfluxDB: De-export symbols
* InfluxDB: Remove unused code
* devenv: Make InfluxDB version configurable

Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>

devenv/docker/blocks/influxdb/.env

@@ -0,0 +1 @@
+influxdb_version=1.8.1-alpine

devenv/docker/blocks/influxdb/docker-compose.yaml

@@ -1,5 +1,5 @@
   influxdb:
-    image: influxdb:1.7.6
+    image: influxdb:${influxdb_version}
     container_name: influxdb
     ports:
       - '2004:2004'

pkg/tsdb/influxdb/flux/builder.go

@@ -27,8 +27,8 @@ type columnInfo struct {
 	converter *data.FieldConverter
 }
 
-// FrameBuilder This is an interface to help testing
-type FrameBuilder struct {
+// frameBuilder is an interface to help testing.
+type frameBuilder struct {
 	tableID      int64
 	active       *data.Frame
 	frames       []*data.Frame
@@ -50,23 +50,23 @@ func isTag(schk string) bool {
 func getConverter(t string) (*data.FieldConverter, error) {
 	switch t {
 	case stringDatatype:
-		return &AnyToOptionalString, nil
+		return &anyToOptionalString, nil
 	case timeDatatypeRFC:
-		return &TimeToOptionalTime, nil
+		return &timeToOptionalTime, nil
 	case timeDatatypeRFCNano:
-		return &TimeToOptionalTime, nil
+		return &timeToOptionalTime, nil
 	case durationDatatype:
-		return &Int64ToOptionalInt64, nil
+		return &int64ToOptionalInt64, nil
 	case doubleDatatype:
-		return &Float64ToOptionalFloat64, nil
+		return &float64ToOptionalFloat64, nil
 	case boolDatatype:
-		return &BoolToOptionalBool, nil
+		return &boolToOptionalBool, nil
 	case longDatatype:
-		return &Int64ToOptionalInt64, nil
+		return &int64ToOptionalInt64, nil
 	case uLongDatatype:
-		return &UInt64ToOptionalUInt64, nil
+		return &uint64ToOptionalUInt64, nil
 	case base64BinaryDataType:
-		return &AnyToOptionalString, nil
+		return &anyToOptionalString, nil
 	}
 
 	return nil, fmt.Errorf("no matching converter found for [%v]", t)
@@ -75,7 +75,7 @@ func getConverter(t string) (*data.FieldConverter, error) {
 // Init initializes the frame to be returned
 // fields points at entries in the frame, and provides easier access
 // names indexes the columns encountered
-func (fb *FrameBuilder) Init(metadata *query.FluxTableMetadata) error {
+func (fb *frameBuilder) Init(metadata *query.FluxTableMetadata) error {
 	columns := metadata.Columns()
 	fb.frames = make([]*data.Frame, 0)
 	fb.tableID = -1
@@ -153,7 +153,7 @@ func getTimeSeriesTimeColumn(columns []*query.FluxColumn) *query.FluxColumn {
 // Tags are appended as labels
 // _measurement holds the dataframe name
 // _field holds the field name.
-func (fb *FrameBuilder) Append(record *query.FluxRecord) error {
+func (fb *frameBuilder) Append(record *query.FluxRecord) error {
 	table, ok := record.ValueByKey("table").(int64)
 	if ok && table != fb.tableID {
 		fb.totalSeries++

pkg/tsdb/influxdb/flux/converters.go

@@ -2,34 +2,13 @@ package flux
 
 import (
 	"fmt"
-	"strconv"
 	"time"
 
 	"github.com/grafana/grafana-plugin-sdk-go/data"
 )
 
-// Int64NOOP .....
-var Int64NOOP = data.FieldConverter{
-	OutputFieldType: data.FieldTypeInt64,
-}
-
-// BoolNOOP .....
-var BoolNOOP = data.FieldConverter{
-	OutputFieldType: data.FieldTypeBool,
-}
-
-// Float64NOOP .....
-var Float64NOOP = data.FieldConverter{
-	OutputFieldType: data.FieldTypeFloat64,
-}
-
-// StringNOOP value is already in the proper format
-var StringNOOP = data.FieldConverter{
-	OutputFieldType: data.FieldTypeString,
-}
-
-// AnyToOptionalString any value as a string
-var AnyToOptionalString = data.FieldConverter{
+// anyToOptionalString any value as a string.
+var anyToOptionalString = data.FieldConverter{
 	OutputFieldType: data.FieldTypeNullableString,
 	Converter: func(v interface{}) (interface{}, error) {
 		if v == nil {
@@ -40,8 +19,8 @@ var AnyToOptionalString = data.FieldConverter{
 	},
 }
 
-// Float64ToOptionalFloat64 optional float value
-var Float64ToOptionalFloat64 = data.FieldConverter{
+// float64ToOptionalFloat64 optional float value
+var float64ToOptionalFloat64 = data.FieldConverter{
 	OutputFieldType: data.FieldTypeNullableFloat64,
 	Converter: func(v interface{}) (interface{}, error) {
 		if v == nil {
@@ -55,8 +34,8 @@ var Float64ToOptionalFloat64 = data.FieldConverter{
 	},
 }
 
-// Int64ToOptionalInt64 optional int value
-var Int64ToOptionalInt64 = data.FieldConverter{
+// int64ToOptionalInt64 optional int value
+var int64ToOptionalInt64 = data.FieldConverter{
 	OutputFieldType: data.FieldTypeNullableInt64,
 	Converter: func(v interface{}) (interface{}, error) {
 		if v == nil {
@@ -70,8 +49,8 @@ var Int64ToOptionalInt64 = data.FieldConverter{
 	},
 }
 
-// UInt64ToOptionalUInt64 optional int value
-var UInt64ToOptionalUInt64 = data.FieldConverter{
+// uint64ToOptionalUInt64 optional int value
+var uint64ToOptionalUInt64 = data.FieldConverter{
 	OutputFieldType: data.FieldTypeNullableUint64,
 	Converter: func(v interface{}) (interface{}, error) {
 		if v == nil {
@@ -85,8 +64,8 @@ var UInt64ToOptionalUInt64 = data.FieldConverter{
 	},
 }
 
-// BoolToOptionalBool optional int value
-var BoolToOptionalBool = data.FieldConverter{
+// boolToOptionalBool optional int value
+var boolToOptionalBool = data.FieldConverter{
 	OutputFieldType: data.FieldTypeNullableBool,
 	Converter: func(v interface{}) (interface{}, error) {
 		if v == nil {
@@ -100,8 +79,8 @@ var BoolToOptionalBool = data.FieldConverter{
 	},
 }
 
-// TimeToOptionalTime optional int value
-var TimeToOptionalTime = data.FieldConverter{
+// timeToOptionalTime optional int value
+var timeToOptionalTime = data.FieldConverter{
 	OutputFieldType: data.FieldTypeNullableTime,
 	Converter: func(v interface{}) (interface{}, error) {
 		if v == nil {
@@ -114,70 +93,3 @@ var TimeToOptionalTime = data.FieldConverter{
 		return &val, nil
 	},
 }
-
-// RFC3339StringToNullableTime .....
-func RFC3339StringToNullableTime(s string) (*time.Time, error) {
-	if s == "" {
-		return nil, nil
-	}
-
-	rv, err := time.Parse(time.RFC3339, s)
-	if err != nil {
-		return nil, err
-	}
-
-	u := rv.UTC()
-	return &u, nil
-}
-
-// StringToOptionalFloat64 string to float
-var StringToOptionalFloat64 = data.FieldConverter{
-	OutputFieldType: data.FieldTypeNullableFloat64,
-	Converter: func(v interface{}) (interface{}, error) {
-		if v == nil {
-			return nil, nil
-		}
-		val, ok := v.(string)
-		if !ok { // or return some default value instead of erroring
-			return nil, fmt.Errorf("[floatz] expected string input but got type %T", v)
-		}
-		fV, err := strconv.ParseFloat(val, 64)
-		return &fV, err
-	},
-}
-
-// Float64EpochSecondsToTime  numeric seconds to time
-var Float64EpochSecondsToTime = data.FieldConverter{
-	OutputFieldType: data.FieldTypeTime,
-	Converter: func(v interface{}) (interface{}, error) {
-		fV, ok := v.(float64)
-		if !ok { // or return some default value instead of erroring
-			return nil, fmt.Errorf("[seconds] expected float64 input but got type %T", v)
-		}
-		return time.Unix(int64(fV), 0).UTC(), nil
-	},
-}
-
-// Float64EpochMillisToTime convert to time
-var Float64EpochMillisToTime = data.FieldConverter{
-	OutputFieldType: data.FieldTypeTime,
-	Converter: func(v interface{}) (interface{}, error) {
-		fV, ok := v.(float64)
-		if !ok { // or return some default value instead of erroring
-			return nil, fmt.Errorf("[ms] expected float64 input but got type %T", v)
-		}
-		return time.Unix(0, int64(fV)*int64(time.Millisecond)).UTC(), nil
-	},
-}
-
-// Boolean ...
-var Boolean = data.FieldConverter{
-	OutputFieldType: data.FieldTypeBool,
-	Converter: func(v interface{}) (interface{}, error) {
-		fV, ok := v.(bool)
-		if !ok { // or return some default value instead of erroring
-			return nil, fmt.Errorf("[ms] expected bool input but got type %T", v)
-		}
-		return fV, nil
-	},
-}

pkg/tsdb/influxdb/flux/executor.go

@@ -9,12 +9,12 @@ import (
 	"github.com/influxdata/influxdb-client-go/v2/api"
 )
 
-// executeQuery runs a flux query using the QueryModel to interpolate the query and the runner to execute it.
+// executeQuery runs a flux query using the queryModel to interpolate the query and the runner to execute it.
 // maxSeries somehow limits the response.
-func executeQuery(ctx context.Context, query QueryModel, runner queryRunner, maxSeries int) (dr backend.DataResponse) {
+func executeQuery(ctx context.Context, query queryModel, runner queryRunner, maxSeries int) (dr backend.DataResponse) {
 	dr = backend.DataResponse{}
 
-	flux, err := Interpolate(query)
+	flux, err := interpolate(query)
 	if err != nil {
 		dr.Error = err
 		return
@@ -50,7 +50,7 @@ func readDataFrames(result *api.QueryTableResult, maxPoints int, maxSeries int)
 	glog.Debug("Reading data frames from query result", "maxPoints", maxPoints, "maxSeries", maxSeries)
 	dr = backend.DataResponse{}
 
-	builder := &FrameBuilder{
+	builder := &frameBuilder{
 		maxPoints: maxPoints,
 		maxSeries: maxSeries,
 	}

pkg/tsdb/influxdb/flux/executor_test.go

@@ -55,7 +55,7 @@ func verifyGoldenResponse(name string) (*backend.DataResponse, error) {
 		testDataPath: name + ".csv",
 	}
 
-	dr := executeQuery(context.Background(), QueryModel{MaxDataPoints: 100}, runner, 50)
+	dr := executeQuery(context.Background(), queryModel{MaxDataPoints: 100}, runner, 50)
 	err := experimental.CheckGoldenDataResponse("./testdata/"+name+".golden.txt", &dr, true)
 	return &dr, err
 }

pkg/tsdb/influxdb/flux/flux.go

@@ -26,29 +26,29 @@ func Query(ctx context.Context, dsInfo *models.DataSource, tsdbQuery *tsdb.TsdbQ
 	tRes := &tsdb.Response{
 		Results: make(map[string]*tsdb.QueryResult),
 	}
-	runner, err := RunnerFromDataSource(dsInfo)
+	r, err := runnerFromDataSource(dsInfo)
 	if err != nil {
 		return nil, err
 	}
-	defer runner.client.Close()
+	defer r.client.Close()
 
 	for _, query := range tsdbQuery.Queries {
-		qm, err := GetQueryModelTSDB(query, tsdbQuery.TimeRange, dsInfo)
+		qm, err := getQueryModelTSDB(query, tsdbQuery.TimeRange, dsInfo)
 		if err != nil {
 			tRes.Results[query.RefId] = &tsdb.QueryResult{Error: err}
 			continue
 		}
 
-		res := executeQuery(context.Background(), *qm, runner, 50)
+		res := executeQuery(context.Background(), *qm, r, 50)
 
 		tRes.Results[query.RefId] = backendDataResponseToTSDBResponse(&res, query.RefId)
 	}
 	return tRes, nil
 }
 
-// Runner is an influxdb2 Client with an attached org property and is used
+// runner is an influxdb2 Client with an attached org property and is used
 // for running flux queries.
-type Runner struct {
+type runner struct {
 	client influxdb2.Client
 	org    string
 }
@@ -59,13 +59,13 @@ type queryRunner interface {
 }
 
 // runQuery executes fluxQuery against the Runner's organization and returns a Flux typed result.
-func (r *Runner) runQuery(ctx context.Context, fluxQuery string) (*api.QueryTableResult, error) {
+func (r *runner) runQuery(ctx context.Context, fluxQuery string) (*api.QueryTableResult, error) {
 	qa := r.client.QueryAPI(r.org)
 	return qa.Query(ctx, fluxQuery)
 }
 
-// RunnerFromDataSource creates a runner from the datasource model (the datasource instance's configuration).
-func RunnerFromDataSource(dsInfo *models.DataSource) (*Runner, error) {
+// runnerFromDataSource creates a runner from the datasource model (the datasource instance's configuration).
+func runnerFromDataSource(dsInfo *models.DataSource) (*runner, error) {
 	org := dsInfo.JsonData.Get("organization").MustString("")
 	if org == "" {
 		return nil, fmt.Errorf("missing organization in datasource configuration")
@@ -86,7 +86,7 @@ func RunnerFromDataSource(dsInfo *models.DataSource) (*Runner, error) {
 		return nil, err
 	}
 	opts.HTTPOptions().SetHTTPClient(hc)
-	return &Runner{
+	return &runner{
 		client: influxdb2.NewClientWithOptions(url, token, opts),
 		org:    org,
 	}, nil

pkg/tsdb/influxdb/flux/macros.go

@@ -11,8 +11,8 @@ import (
 
 const variableFilter = `(?m)([a-zA-Z]+)\.([a-zA-Z]+)`
 
-// Interpolate processes macros
-func Interpolate(query QueryModel) (string, error) {
+// interpolate processes macros
+func interpolate(query queryModel) (string, error) {
 	flux := query.RawQuery
 
 	variableFilterExp, err := regexp.Compile(variableFilter)

pkg/tsdb/influxdb/flux/macros_test.go

@@ -6,6 +6,8 @@ import (
 
 	"github.com/google/go-cmp/cmp"
 	"github.com/grafana/grafana-plugin-sdk-go/backend"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 func TestInterpolate(t *testing.T) {
@@ -17,7 +19,7 @@ func TestInterpolate(t *testing.T) {
 		To:   time.Unix(0, 0),
 	}
 
-	options := QueryOptions{
+	options := queryOptions{
 		Organization:  "grafana1",
 		Bucket:        "grafana2",
 		DefaultBucket: "grafana3",
@@ -36,20 +38,17 @@ func TestInterpolate(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			query := QueryModel{
+			query := queryModel{
 				RawQuery:      tt.before,
 				Options:       options,
 				TimeRange:     timeRange,
 				MaxDataPoints: 1,
 				Interval:      1000 * 1000 * 1000,
 			}
-			interpolatedQuery, err := Interpolate(query)
-			if err != nil {
-				t.Fatal(err)
-			}
-			if diff := cmp.Diff(tt.after, interpolatedQuery); diff != "" {
-				t.Fatalf("Result mismatch (-want +got):\n%s", diff)
-			}
+			interpolatedQuery, err := interpolate(query)
+			require.NoError(t, err)
+			diff := cmp.Diff(tt.after, interpolatedQuery)
+			assert.Equal(t, "", diff)
 		})
 	}
 }

pkg/tsdb/influxdb/flux/query_models.go

@@ -10,17 +10,17 @@ import (
 	"github.com/grafana/grafana/pkg/tsdb"
 )
 
-// QueryOptions represents datasource configuration options
-type QueryOptions struct {
+// queryOptions represents datasource configuration options
+type queryOptions struct {
 	Bucket        string `json:"bucket"`
 	DefaultBucket string `json:"defaultBucket"`
 	Organization  string `json:"organization"`
 }
 
-// QueryModel represents a spreadsheet query.
-type QueryModel struct {
+// queryModel represents a query.
+type queryModel struct {
 	RawQuery string       `json:"query"`
-	Options  QueryOptions `json:"options"`
+	Options  queryOptions `json:"options"`
 
 	// Not from JSON
 	TimeRange     backend.TimeRange `json:"-"`
@@ -31,8 +31,8 @@ type QueryModel struct {
 // The following is commented out but kept as it should be useful when
 // restoring this code to be closer to the SDK's models.
 
-// func GetQueryModel(query backend.DataQuery) (*QueryModel, error) {
-// 	model := &QueryModel{}
+// func GetQueryModel(query backend.DataQuery) (*queryModel, error) {
+// 	model := &queryModel{}
 
 // 	err := json.Unmarshal(query.JSON, &model)
 // 	if err != nil {
@@ -46,9 +46,9 @@ type QueryModel struct {
 // 	return model, nil
 // }
 
-// GetQueryModelTSDB builds a QueryModel from tsdb.Query information and datasource configuration (dsInfo).
-func GetQueryModelTSDB(query *tsdb.Query, timeRange *tsdb.TimeRange, dsInfo *models.DataSource) (*QueryModel, error) {
-	model := &QueryModel{}
+// getQueryModelTSDB builds a queryModel from tsdb.Query information and datasource configuration (dsInfo).
+func getQueryModelTSDB(query *tsdb.Query, timeRange *tsdb.TimeRange, dsInfo *models.DataSource) (*queryModel, error) {
+	model := &queryModel{}
 	queryBytes, err := query.Model.Encode()
 	if err != nil {
 		return nil, fmt.Errorf("failed to re-encode the flux query into JSON: %w", err)