split cfg from records, add bash-like strategy, improvements

cmd/collect/main.go

@@ -11,6 +11,7 @@ import (
 	"os"
 
 	"github.com/BurntSushi/toml"
+	"github.com/curusarn/resh/pkg/cfg"
 	"github.com/curusarn/resh/pkg/records"
 
 	//  "os/exec"
@@ -34,7 +35,7 @@ func main() {
 
 	machineIDPath := "/etc/machine-id"
 
-	var config records.Config
+	var config cfg.Config
 	if _, err := toml.DecodeFile(configPath, &config); err != nil {
 		log.Fatal("Error reading config:", err)
 	}

cmd/daemon/main.go

@@ -14,6 +14,7 @@ import (
 	"strings"
 
 	"github.com/BurntSushi/toml"
+	"github.com/curusarn/resh/pkg/cfg"
 	"github.com/curusarn/resh/pkg/records"
 )
 
@@ -43,7 +44,7 @@ func main() {
 	log.SetOutput(f)
 	log.SetPrefix(strconv.Itoa(os.Getpid()) + " | ")
 
-	var config records.Config
+	var config cfg.Config
 	if _, err := toml.DecodeFile(configPath, &config); err != nil {
 		log.Println("Error reading config", err)
 		return

cmd/evaluate/main.go

@@ -13,7 +13,6 @@ import (
 	"os/exec"
 	"os/user"
 	"path/filepath"
-	"sort"
 
 	"github.com/curusarn/resh/pkg/records"
 	"github.com/jpillora/longestcommon"
@@ -49,7 +48,7 @@ func main() {
 	inputDataRoot := flag.String("input-data-root", "",
 		"Input data root, enables batch mode, looks for files matching --input option")
 	slow := flag.Bool("slow", false,
-		"Enables stuff that takes a long time (e.g. markov chain strategies).")
+		"Enables strategies that takes a long time (e.g. markov chain strategies).")
 	skipFailedCmds := flag.Bool("skip-failed-cmds", false,
 		"Skips records with non-zero exit status.")
 	debugRecords := flag.Float64("debug", 0, "Debug records - percentage of records that should be debugged.")
@@ -96,32 +95,33 @@ func main() {
 		}
 	}
 
-	var strategies []strategy
+	var simpleStrategies []ISimpleStrategy
+	var strategies []IStrategy
 
 	// dummy := strategyDummy{}
-	// strategies = append(strategies, &dummy)
+	// simpleStrategies = append(simpleStrategies, &dummy)
 
-	strategies = append(strategies, &strategyRecent{})
+	simpleStrategies = append(simpleStrategies, &strategyRecent{})
 
-	frequent := strategyFrequent{}
+	// frequent := strategyFrequent{}
-	frequent.init()
+	// frequent.init()
-	strategies = append(strategies, &frequent)
+	// simpleStrategies = append(simpleStrategies, &frequent)
 
-	random := strategyRandom{candidatesSize: maxCandidates}
+	// random := strategyRandom{candidatesSize: maxCandidates}
-	random.init()
+	// random.init()
-	strategies = append(strategies, &random)
+	// simpleStrategies = append(simpleStrategies, &random)
 
 	directory := strategyDirectorySensitive{}
 	directory.init()
-	strategies = append(strategies, &directory)
+	simpleStrategies = append(simpleStrategies, &directory)
 
-	dynamicDist := strategyDynamicRecordDistance{
+	dynamicDistG := strategyDynamicRecordDistance{
 		maxDepth:   3000,
-		distParams: records.DistParams{Pwd: 10, RealPwd: 10, SessionID: 1, Time: 1},
+		distParams: records.DistParams{Pwd: 10, RealPwd: 10, SessionID: 1, Time: 1, Git: 10},
-		label:      "10*pwd,10*realpwd,session,time",
+		label:      "10*pwd,10*realpwd,session,time,10*git",
 	}
-	dynamicDist.init()
+	dynamicDistG.init()
-	strategies = append(strategies, &dynamicDist)
+	strategies = append(strategies, &dynamicDistG)
 
 	distanceStaticBest := strategyRecordDistance{
 		maxDepth:   3000,
@@ -130,6 +130,10 @@ func main() {
 	}
 	strategies = append(strategies, &distanceStaticBest)
 
+	recentBash := strategyRecentBash{}
+	recentBash.init()
+	strategies = append(strategies, &recentBash)
+
 	if *slow {
 
 		markovCmd := strategyMarkovChainCmd{order: 1}
@@ -144,7 +148,11 @@ func main() {
 		markov2 := strategyMarkovChain{order: 2}
 		markov2.init()
 
-		strategies = append(strategies, &markovCmd2, &markovCmd, &markov2, &markov)
+		simpleStrategies = append(simpleStrategies, &markovCmd2, &markovCmd, &markov2, &markov)
+	}
+
+	for _, strat := range simpleStrategies {
+		strategies = append(strategies, NewSimpleStrategyWrapper(strat))
 	}
 
 	for _, strat := range strategies {
@@ -157,13 +165,45 @@ func main() {
 	evaluator.calculateStatsAndPlot(*plottingScript)
 }
 
-type strategy interface {
+type ISimpleStrategy interface {
 	GetTitleAndDescription() (string, string)
 	GetCandidates() []string
 	AddHistoryRecord(record *records.EnrichedRecord) error
 	ResetHistory() error
 }
 
+type IStrategy interface {
+	GetTitleAndDescription() (string, string)
+	GetCandidates(r records.EnrichedRecord) []string
+	AddHistoryRecord(record *records.EnrichedRecord) error
+	ResetHistory() error
+}
+
+type simpleStrategyWrapper struct {
+	strategy ISimpleStrategy
+}
+
+// NewSimpleStrategyWrapper returns IStrategy created by wrapping given ISimpleStrategy
+func NewSimpleStrategyWrapper(strategy ISimpleStrategy) *simpleStrategyWrapper {
+	return &simpleStrategyWrapper{strategy: strategy}
+}
+
+func (s *simpleStrategyWrapper) GetTitleAndDescription() (string, string) {
+	return s.strategy.GetTitleAndDescription()
+}
+
+func (s *simpleStrategyWrapper) GetCandidates(r records.EnrichedRecord) []string {
+	return s.strategy.GetCandidates()
+}
+
+func (s *simpleStrategyWrapper) AddHistoryRecord(r *records.EnrichedRecord) error {
+	return s.strategy.AddHistoryRecord(r)
+}
+
+func (s *simpleStrategyWrapper) ResetHistory() error {
+	return s.strategy.ResetHistory()
+}
+
 type matchJSON struct {
 	Match         bool
 	Distance      int
@@ -209,7 +249,7 @@ type evaluator struct {
 
 func (e *evaluator) initBatchMode(input string, inputDataRoot string) error {
 	e.UsersRecords = e.loadHistoryRecordsBatchMode(input, inputDataRoot)
-	e.processRecords()
+	e.preprocessRecords()
 	return nil
 }
 
@@ -219,7 +259,7 @@ func (e *evaluator) init(inputPath string) error {
 	user := userRecords{}
 	user.Devices = append(user.Devices, device)
 	e.UsersRecords = append(e.UsersRecords, user)
-	e.processRecords()
+	e.preprocessRecords()
 	return nil
 }
 
@@ -241,21 +281,18 @@ func (e *evaluator) calculateStatsAndPlot(scriptName string) {
 	}
 }
 
-// enrich records and add them to serializable structure
+func (e *evaluator) preprocessDeviceRecords(device deviceRecords) deviceRecords {
-func (e *evaluator) processRecords() {
-	for i := range e.UsersRecords {
-		for j, device := range e.UsersRecords[i].Devices {
 	sessionIDs := map[string]uint64{}
 	var nextID uint64
 	nextID = 1 // start with 1 because 0 won't get saved to json
-			for k, record := range e.UsersRecords[i].Devices[j].Records {
+	for k, record := range device.Records {
 		id, found := sessionIDs[record.SessionID]
 		if found == false {
 			id = nextID
 			sessionIDs[record.SessionID] = id
 			nextID++
 		}
-				e.UsersRecords[i].Devices[j].Records[k].SeqSessionID = id
+		device.Records[k].SeqSessionID = id
 		// assert
 		if record.Sanitized != e.sanitizedInput {
 			if e.sanitizedInput {
@@ -263,22 +300,42 @@ func (e *evaluator) processRecords() {
 			}
 			log.Fatal("ASSERT failed: data is sanitized but '--sanitized-input' is not present")
 		}
-				e.UsersRecords[i].Devices[j].Records[k].SeqSessionID = id
+		device.Records[k].SeqSessionID = id
 		if e.debugRecords > 0 && rand.Float64() < e.debugRecords {
-					e.UsersRecords[i].Devices[j].Records[k].DebugThisRecord = true
+			device.Records[k].DebugThisRecord = true
 		}
 	}
-			sort.SliceStable(e.UsersRecords[i].Devices[j].Records, func(x, y int) bool {
+	// sort.SliceStable(device.Records, func(x, y int) bool {
-				if device.Records[x].SeqSessionID == device.Records[y].SeqSessionID {
+	// 	if device.Records[x].SeqSessionID == device.Records[y].SeqSessionID {
-					return device.Records[x].RealtimeAfterLocal < device.Records[y].RealtimeAfterLocal
+	// 		return device.Records[x].RealtimeAfterLocal < device.Records[y].RealtimeAfterLocal
+	// 	}
+	// 	return device.Records[x].SeqSessionID < device.Records[y].SeqSessionID
+	// })
+
+	// iterate from back and mark last record of each session
+	sessionIDSet := map[string]bool{}
+	for i := len(device.Records) - 1; i >= 0; i-- {
+		var record *records.EnrichedRecord
+		record = &device.Records[i]
+		if sessionIDSet[record.SessionID] {
+			continue
+		}
+		sessionIDSet[record.SessionID] = true
+		record.LastRecordOfSession = true
+	}
+	return device
 }
-				return device.Records[x].SeqSessionID < device.Records[y].SeqSessionID
+
-			})
+// enrich records and add sequential session ID
+func (e *evaluator) preprocessRecords() {
+	for i := range e.UsersRecords {
+		for j := range e.UsersRecords[i].Devices {
+			e.UsersRecords[i].Devices[j] = e.preprocessDeviceRecords(e.UsersRecords[i].Devices[j])
 		}
 	}
 }
 
-func (e *evaluator) evaluate(strategy strategy) error {
+func (e *evaluator) evaluate(strategy IStrategy) error {
 	title, description := strategy.GetTitleAndDescription()
 	log.Println("Evaluating strategy:", title, "-", description)
 	strategyData := strategyJSON{Title: title, Description: description}
@@ -290,7 +347,7 @@ func (e *evaluator) evaluate(strategy strategy) error {
 				if e.skipFailedCmds && record.ExitCode != 0 {
 					continue
 				}
-				candidates := strategy.GetCandidates()
+				candidates := strategy.GetCandidates(records.Stripped(record))
 				if record.DebugThisRecord {
 					log.Println()
 					log.Println("===================================================")

cmd/evaluate/strategy-dynamic-record-distance.go

@@ -13,6 +13,7 @@ type strategyDynamicRecordDistance struct {
 	distParams         records.DistParams
 	pwdHistogram       map[string]int
 	realPwdHistogram   map[string]int
+	gitOriginHistogram map[string]int
 	maxDepth           int
 	label              string
 }
@@ -26,6 +27,7 @@ func (s *strategyDynamicRecordDistance) init() {
 	s.history = nil
 	s.pwdHistogram = map[string]int{}
 	s.realPwdHistogram = map[string]int{}
+	s.gitOriginHistogram = map[string]int{}
 }
 
 func (s *strategyDynamicRecordDistance) GetTitleAndDescription() (string, string) {
@@ -36,26 +38,23 @@ func (s *strategyDynamicRecordDistance) idf(count int) float64 {
 	return math.Log(float64(len(s.history)) / float64(count))
 }
 
-func (s *strategyDynamicRecordDistance) GetCandidates() []string {
+func (s *strategyDynamicRecordDistance) GetCandidates(strippedRecord records.EnrichedRecord) []string {
 	if len(s.history) == 0 {
 		return nil
 	}
-	var prevRecord records.EnrichedRecord
-	prevRecord = s.history[0]
-	prevRecord.SetCmdLine("")
-	prevRecord.SetBeforeToAfter()
 	var mapItems []strDynDistEntry
 	for i, record := range s.history {
 		if s.maxDepth != 0 && i > s.maxDepth {
 			break
 		}
 		distParams := records.DistParams{
-			Pwd:       s.distParams.Pwd * s.idf(s.pwdHistogram[prevRecord.PwdAfter]),
+			Pwd:       s.distParams.Pwd * s.idf(s.pwdHistogram[strippedRecord.PwdAfter]),
-			RealPwd:   s.distParams.RealPwd * s.idf(s.realPwdHistogram[prevRecord.RealPwdAfter]),
+			RealPwd:   s.distParams.RealPwd * s.idf(s.realPwdHistogram[strippedRecord.RealPwdAfter]),
+			Git:       s.distParams.Git * s.idf(s.gitOriginHistogram[strippedRecord.GitOriginRemote]),
 			Time:      s.distParams.Time,
 			SessionID: s.distParams.SessionID,
 		}
-		distance := record.DistanceTo(prevRecord, distParams)
+		distance := record.DistanceTo(strippedRecord, distParams)
 		mapItems = append(mapItems, strDynDistEntry{record.CmdLine, distance})
 	}
 	sort.SliceStable(mapItems, func(i int, j int) bool { return mapItems[i].distance < mapItems[j].distance })
@@ -76,6 +75,7 @@ func (s *strategyDynamicRecordDistance) AddHistoryRecord(record *records.Enriche
 	s.history = append([]records.EnrichedRecord{*record}, s.history...)
 	s.pwdHistogram[record.Pwd]++
 	s.realPwdHistogram[record.RealPwd]++
+	s.gitOriginHistogram[record.GitOriginRemote]++
 	return nil
 }
 

cmd/evaluate/strategy-recent-bash.go

@@ -0,0 +1,50 @@
+package main
+
+import "github.com/curusarn/resh/pkg/records"
+
+type strategyRecentBash struct {
+	histfile         []string
+	histfileSnapshot map[string][]string
+	history          map[string][]string
+}
+
+func (s *strategyRecentBash) init() {
+	s.histfileSnapshot = map[string][]string{}
+	s.history = map[string][]string{}
+}
+
+func (s *strategyRecentBash) GetTitleAndDescription() (string, string) {
+	return "recent (bash-like)", "Behave like bash"
+}
+
+func (s *strategyRecentBash) GetCandidates(strippedRecord records.EnrichedRecord) []string {
+	// populate the local history from histfile
+	if s.histfileSnapshot[strippedRecord.SessionID] == nil {
+		s.histfileSnapshot[strippedRecord.SessionID] = s.histfile
+	}
+	return append(s.history[strippedRecord.SessionID], s.histfileSnapshot[strippedRecord.SessionID]...)
+}
+
+func (s *strategyRecentBash) AddHistoryRecord(record *records.EnrichedRecord) error {
+	// remove previous occurance of record
+	for i, cmd := range s.history[record.SessionID] {
+		if cmd == record.CmdLine {
+			s.history[record.SessionID] = append(s.history[record.SessionID][:i], s.history[record.SessionID][i+1:]...)
+		}
+	}
+	// append new record
+	s.history[record.SessionID] = append([]string{record.CmdLine}, s.history[record.SessionID]...)
+
+	if record.LastRecordOfSession {
+		// append history of the session to histfile and clear session history
+		s.histfile = append(s.history[record.SessionID], s.histfile...)
+		s.histfileSnapshot[record.SessionID] = nil
+		s.history[record.SessionID] = nil
+	}
+	return nil
+}
+
+func (s *strategyRecentBash) ResetHistory() error {
+	s.init()
+	return nil
+}

cmd/evaluate/strategy-record-distance.go

@@ -27,20 +27,16 @@ func (s *strategyRecordDistance) GetTitleAndDescription() (string, string) {
 	return "record distance (depth:" + strconv.Itoa(s.maxDepth) + ";" + s.label + ")", "Use record distance to recommend commands"
 }
 
-func (s *strategyRecordDistance) GetCandidates() []string {
+func (s *strategyRecordDistance) GetCandidates(strippedRecord records.EnrichedRecord) []string {
 	if len(s.history) == 0 {
 		return nil
 	}
-	var prevRecord records.EnrichedRecord
-	prevRecord = s.history[0]
-	prevRecord.SetCmdLine("")
-	prevRecord.SetBeforeToAfter()
 	var mapItems []strDistEntry
 	for i, record := range s.history {
 		if s.maxDepth != 0 && i > s.maxDepth {
 			break
 		}
-		distance := record.DistanceTo(prevRecord, s.distParams)
+		distance := record.DistanceTo(strippedRecord, s.distParams)
 		mapItems = append(mapItems, strDistEntry{record.CmdLine, distance})
 	}
 	sort.SliceStable(mapItems, func(i int, j int) bool { return mapItems[i].distance < mapItems[j].distance })

pkg/cfg/cfg.go

@@ -0,0 +1,6 @@
+package cfg
+
+// Config struct
+type Config struct {
+	Port int
+}

pkg/records/records.go

@@ -93,6 +93,7 @@ type EnrichedRecord struct {
 	FirstWord           string   `json:"firstWord"`
 	Invalid             bool     `json:"invalid"`
 	SeqSessionID        uint64   `json:"seqSessionId"`
+	LastRecordOfSession bool     `json:"lastRecordOfSession"`
 	DebugThisRecord     bool     `json:"debugThisRecord"`
 	Errors              []string `json:"errors"`
 	// SeqSessionID uint64 `json:"seqSessionId,omitempty"`
@@ -213,6 +214,22 @@ func (r *EnrichedRecord) SetCmdLine(cmdLine string) {
 	}
 }
 
+// Stripped returns record stripped of all info that is not available during prediction
+func Stripped(r EnrichedRecord) EnrichedRecord {
+	// clear the cmd itself
+	r.SetCmdLine("")
+	// replace after info with before info
+	r.PwdAfter = r.Pwd
+	r.RealPwdAfter = r.RealPwd
+	r.TimezoneAfter = r.TimezoneBefore
+	r.RealtimeAfter = r.RealtimeBefore
+	r.RealtimeAfterLocal = r.RealtimeBeforeLocal
+	// clear some more stuff
+	r.RealtimeDuration = 0
+	r.LastRecordOfSession = false
+	return r
+}
+
 // SetBeforeToAfter - set "before" members to "after" members
 func (r *EnrichedRecord) SetBeforeToAfter() {
 	r.Pwd = r.PwdAfter
@@ -375,8 +392,3 @@ func (r *EnrichedRecord) DistanceTo(r2 EnrichedRecord, p DistParams) float64 {
 
 	return dist
 }
-
-// Config struct
-type Config struct {
-	Port int
-}