lib/protoparser/influx: extract stream parsing code into a separate stream package

This is a follow-up for 057698f7fb

app/vmagent/influx/request_handler.go

@@ -15,6 +15,7 @@ import (
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/promrelabel"
 	parserCommon "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
 	parser "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/influx"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/influx/stream"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/tenantmetrics"
 	"github.com/VictoriaMetrics/metrics"
 )
@@ -36,7 +37,7 @@ var (
 //
 // See https://github.com/influxdata/telegraf/tree/master/plugins/inputs/socket_listener/
 func InsertHandlerForReader(r io.Reader, isGzipped bool) error {
-	return parser.ParseStream(r, isGzipped, "", "", func(db string, rows []parser.Row) error {
+	return stream.Parse(r, isGzipped, "", "", func(db string, rows []parser.Row) error {
 		return insertRows(nil, db, rows, nil)
 	})
 }
@@ -54,7 +55,7 @@ func InsertHandlerForHTTP(at *auth.Token, req *http.Request) error {
 	precision := q.Get("precision")
 	// Read db tag from https://docs.influxdata.com/influxdb/v1.7/tools/api/#write-http-endpoint
 	db := q.Get("db")
-	return parser.ParseStream(req.Body, isGzipped, precision, db, func(db string, rows []parser.Row) error {
+	return stream.Parse(req.Body, isGzipped, precision, db, func(db string, rows []parser.Row) error {
 		return insertRows(at, db, rows, extraLabels)
 	})
 }

app/vminsert/influx/request_handler.go

@@ -14,6 +14,7 @@ import (
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
 	parserCommon "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
 	parser "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/influx"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/influx/stream"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/storage"
 	"github.com/VictoriaMetrics/metrics"
 )
@@ -34,7 +35,7 @@ var (
 //
 // See https://github.com/influxdata/telegraf/tree/master/plugins/inputs/socket_listener/
 func InsertHandlerForReader(r io.Reader) error {
-	return parser.ParseStream(r, false, "", "", func(db string, rows []parser.Row) error {
+	return stream.Parse(r, false, "", "", func(db string, rows []parser.Row) error {
 		return insertRows(db, rows, nil)
 	})
 }
@@ -52,7 +53,7 @@ func InsertHandlerForHTTP(req *http.Request) error {
 	precision := q.Get("precision")
 	// Read db tag from https://docs.influxdata.com/influxdb/v1.7/tools/api/#write-http-endpoint
 	db := q.Get("db")
-	return parser.ParseStream(req.Body, isGzipped, precision, db, func(db string, rows []parser.Row) error {
+	return stream.Parse(req.Body, isGzipped, precision, db, func(db string, rows []parser.Row) error {
 		return insertRows(db, rows, extraLabels)
 	})
 }

lib/protoparser/datadog/stream/streamparser.go

@@ -31,7 +31,7 @@ var (
 		"https://docs.datadoghq.com/metrics/custom_metrics/#naming-custom-metrics")
 )
 
-// ParseStream parses DataDog POST request for /api/v1/series from reader and calls callback for the parsed request.
+// Parse parses DataDog POST request for /api/v1/series from reader and calls callback for the parsed request.
 //
 // callback shouldn't hold series after returning.
 func Parse(r io.Reader, contentEncoding string, callback func(series []datadog.Series) error) error {

lib/protoparser/influx/stream/streamparser.go

@@ -1,4 +1,4 @@
-package influx
+package stream
 
 import (
 	"bufio"
@@ -12,6 +12,7 @@ import (
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/cgroup"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/flagutil"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/influx"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/writeconcurrencylimiter"
 	"github.com/VictoriaMetrics/metrics"
 )
@@ -22,12 +23,12 @@ var (
 		"Minimum practical duration is 1ms. Higher duration (i.e. 1s) may be used for reducing disk space usage for timestamp data")
 )
 
-// ParseStream parses r with the given args and calls callback for the parsed rows.
+// Parse parses r with the given args and calls callback for the parsed rows.
 //
 // The callback can be called concurrently multiple times for streamed data from r.
 //
 // callback shouldn't hold rows after returning.
-func ParseStream(r io.Reader, isGzipped bool, precision, db string, callback func(db string, rows []Row) error) error {
+func Parse(r io.Reader, isGzipped bool, precision, db string, callback func(db string, rows []influx.Row) error) error {
 	wcr := writeconcurrencylimiter.GetReader(r)
 	defer writeconcurrencylimiter.PutReader(wcr)
 	r = wcr
@@ -162,9 +163,9 @@ var streamContextPool sync.Pool
 var streamContextPoolCh = make(chan *streamContext, cgroup.AvailableCPUs())
 
 type unmarshalWork struct {
-	rows         Rows
+	rows         influx.Rows
 	ctx          *streamContext
-	callback     func(db string, rows []Row) error
+	callback     func(db string, rows []influx.Row) error
 	db           string
 	tsMultiplier int64
 	reqBuf       []byte
@@ -179,7 +180,7 @@ func (uw *unmarshalWork) reset() {
 	uw.reqBuf = uw.reqBuf[:0]
 }
 
-func (uw *unmarshalWork) runCallback(rows []Row) {
+func (uw *unmarshalWork) runCallback(rows []influx.Row) {
 	ctx := uw.ctx
 	if err := uw.callback(uw.db, rows); err != nil {
 		ctx.callbackErrLock.Lock()

lib/protoparser/influx/stream/streamparser_test.go

@@ -1,4 +1,4 @@
-package influx
+package stream
 
 import (
 	"testing"