feat(ooniprobe): propagate the RunType CheckIn hint (#274)

This diff propagates the RunType CheckIn hint such that we run
using less URLs when running in the background.

Part of https://github.com/ooni/probe/issues/1299.

cmd/ooniprobe/internal/nettests/nettests.go

@@ -53,6 +53,10 @@ type Controller struct {
 	// using the command line using the --input flag.
 	Inputs []string
 
+	// RunType contains the run_type hint for the CheckIn API. If
+	// not set, the underlying code defaults to "timed".
+	RunType string
+
 	// numInputs is the total number of inputs
 	numInputs int
 
@@ -115,6 +119,8 @@ func (c *Controller) Run(builder *engine.ExperimentBuilder, inputs []string) err
 	start := time.Now()
 	c.ntStartTime = start
 	for idx, input := range inputs {
+		// TODO(bassosimone): should we allow for interruption when running
+		// in unattended mode? Likewise, should we honor MaxRuntime?
 		if c.Probe.IsTerminated() {
 			log.Info("user requested us to terminate using Ctrl-C")
 			break
@@ -172,7 +178,7 @@ func (c *Controller) Run(builder *engine.ExperimentBuilder, inputs []string) err
 			}
 		}
 		// We only save the measurement to disk if we failed to upload the measurement
-		if saveToDisk == true {
+		if saveToDisk {
 			if err := exp.SaveMeasurement(measurement, msmt.MeasurementFilePath.String); err != nil {
 				return errors.Wrap(err, "failed to save measurement on disk")
 			}
@@ -204,6 +210,8 @@ func (c *Controller) Run(builder *engine.ExperimentBuilder, inputs []string) err
 
 // OnProgress should be called when a new progress event is available.
 func (c *Controller) OnProgress(perc float64, msg string) {
+	// TODO(bassosimone): should we adjust this algorithm when we have a
+	// maximum runtime that we would like to honor?
 	log.Debugf("OnProgress: %f - %s", perc, msg)
 	var eta float64
 	eta = -1.0
@@ -213,7 +221,7 @@ func (c *Controller) OnProgress(perc float64, msg string) {
 		step := 1.0 / float64(c.numInputs)
 		perc = floor + perc*step
 		if c.curInputIdx > 0 {
-			eta = (time.Now().Sub(c.ntStartTime).Seconds() / float64(c.curInputIdx)) * float64(c.numInputs-c.curInputIdx)
+			eta = (time.Since(c.ntStartTime).Seconds() / float64(c.curInputIdx)) * float64(c.numInputs-c.curInputIdx)
 		}
 	}
 	if c.ntCount > 0 {

cmd/ooniprobe/internal/nettests/run.go

@@ -1,6 +1,7 @@
 package nettests
 
 import (
+	"sync"
 	"time"
 
 	"github.com/apex/log"
@@ -12,9 +13,10 @@ import (
 // RunGroupConfig contains the settings for running a nettest group.
 type RunGroupConfig struct {
 	GroupName  string
-	Probe      *ooni.Probe
 	InputFiles []string
 	Inputs     []string
+	Probe      *ooni.Probe
+	RunType    string // hint for check-in API
 }
 
 const websitesURLLimitRemoved = `WARNING: CONFIGURATION CHANGE REQUIRED:
@@ -34,16 +36,20 @@ const websitesURLLimitRemoved = `WARNING: CONFIGURATION CHANGE REQUIRED:
 * Since 2022, we will start silently ignoring websites_url_limit
 `
 
+var deprecationWarningOnce sync.Once
+
 // RunGroup runs a group of nettests according to the specified config.
 func RunGroup(config RunGroupConfig) error {
 	if config.Probe.Config().Nettests.WebsitesURLLimit > 0 {
-		log.Warn(websitesURLLimitRemoved)
 		if config.Probe.Config().Nettests.WebsitesMaxRuntime <= 0 {
 			limit := config.Probe.Config().Nettests.WebsitesURLLimit
 			maxRuntime := 5 * limit
 			config.Probe.Config().Nettests.WebsitesMaxRuntime = maxRuntime
 		}
-		time.Sleep(30 * time.Second)
+		deprecationWarningOnce.Do(func() {
+			log.Warn(websitesURLLimitRemoved)
+			time.Sleep(30 * time.Second)
+		})
 	}
 
 	if config.Probe.IsTerminated() {
@@ -90,7 +96,7 @@ func RunGroup(config RunGroupConfig) error {
 	config.Probe.ListenForSignals()
 	config.Probe.MaybeListenForStdinClosed()
 	for i, nt := range group.Nettests {
-		if config.Probe.IsTerminated() == true {
+		if config.Probe.IsTerminated() {
 			log.Debugf("context is terminated, stopping group.Nettests early")
 			break
 		}
@@ -98,6 +104,7 @@ func RunGroup(config RunGroupConfig) error {
 		ctl := NewController(nt, config.Probe, result, sess)
 		ctl.InputFiles = config.InputFiles
 		ctl.Inputs = config.Inputs
+		ctl.RunType = config.RunType
 		ctl.SetNettestIndex(i, len(group.Nettests))
 		if err = nt.Run(ctl); err != nil {
 			log.WithError(err).Errorf("Failed to run %s", group.Label)

cmd/ooniprobe/internal/nettests/web_connectivity.go

@@ -9,12 +9,15 @@ import (
 	"github.com/ooni/probe-cli/v3/internal/engine/model"
 )
 
-// TODO(bassosimone): we should propagate the kind of run
-// to here such that we get the right runType.
-
 func lookupURLs(ctl *Controller, categories []string) ([]string, map[int64]int64, error) {
 	inputloader := &engine.InputLoader{
 		CheckInConfig: &model.CheckInConfig{
+			// Setting Charging and OnWiFi to true causes the CheckIn
+			// API to return to us as much URL as possible with the
+			// given RunType hint.
+			Charging: true,
+			OnWiFi:   true,
+			RunType:  ctl.RunType,
 			WebConnectivity: model.CheckInConfigWebConnectivity{
 				CategoryCodes: categories,
 			},
@@ -24,6 +27,7 @@ func lookupURLs(ctl *Controller, categories []string) ([]string, map[int64]int64
 		SourceFiles:  ctl.InputFiles,
 		StaticInputs: ctl.Inputs,
 	}
+	log.Infof("Calling CheckIn API with %s runType", ctl.RunType)
 	testlist, err := inputloader.Load(context.Background())
 	var urls []string
 	urlIDMap := make(map[int64]int64)