Extracted insert to database functionality (#1082)

agent/main.go

@@ -373,6 +373,7 @@ func handleIncomingMessageAsTapper(socketConnection *websocket.Conn) {
 func initializeDependencies() {
 	dependency.RegisterGenerator(dependency.ServiceMapGeneratorDependency, func() interface{} { return servicemap.GetDefaultServiceMapInstance() })
 	dependency.RegisterGenerator(dependency.OasGeneratorDependency, func() interface{} { return oas.GetDefaultOasGeneratorInstance() })
+	dependency.RegisterGenerator(dependency.EntriesInserter, func() interface{} { return api.GetBasenineEntryInserterInstance() })
 	dependency.RegisterGenerator(dependency.EntriesProvider, func() interface{} { return &entries.BasenineEntriesProvider{} })
 	dependency.RegisterGenerator(dependency.EntriesSocketStreamer, func() interface{} { return &api.BasenineEntryStreamer{} })
 	dependency.RegisterGenerator(dependency.EntryStreamerSocketConnector, func() interface{} { return &api.DefaultEntryStreamerSocketConnector{} })

agent/pkg/api/main.go

@@ -25,10 +25,7 @@ import (
 	"github.com/up9inc/mizu/agent/pkg/utils"
 
 	"github.com/up9inc/mizu/logger"
-	"github.com/up9inc/mizu/shared"
 	tapApi "github.com/up9inc/mizu/tap/api"
-
-	basenine "github.com/up9inc/basenine/client/go"
 )
 
 var k8sResolver *resolver.Resolver
@@ -103,20 +100,6 @@ func startReadingChannel(outputItems <-chan *tapApi.OutputChannelItem, extension
 		panic("Channel of captured messages is nil")
 	}
 
-BasenineReconnect:
-	connection, err := basenine.NewConnection(shared.BasenineHost, shared.BaseninePort)
-	if err != nil {
-		logger.Log.Errorf("Can't establish a new connection to Basenine server: %v", err)
-		time.Sleep(shared.BasenineReconnectInterval * time.Second)
-		goto BasenineReconnect
-	}
-	if err = connection.InsertMode(); err != nil {
-		logger.Log.Errorf("Insert mode call failed: %v", err)
-		connection.Close()
-		time.Sleep(shared.BasenineReconnectInterval * time.Second)
-		goto BasenineReconnect
-	}
-
 	disableOASValidation := false
 	ctx := context.Background()
 	doc, contractContent, router, err := loadOAS(ctx)
@@ -163,11 +146,9 @@ BasenineReconnect:
 
 		providers.EntryAdded(len(data))
 
-		if err = connection.SendText(string(data)); err != nil {
+		entryInserter := dependency.GetInstance(dependency.EntriesInserter).(EntryInserter)
-			logger.Log.Errorf("An error occured while inserting a new record to database: %v", err)
+		if err := entryInserter.Insert(mizuEntry); err != nil {
-			connection.Close()
+			logger.Log.Errorf("Error inserting entry, err: %v", err)
-			time.Sleep(shared.BasenineReconnectInterval * time.Second)
-			goto BasenineReconnect
 		}
 
 		serviceMapGenerator := dependency.GetInstance(dependency.ServiceMapGeneratorDependency).(servicemap.ServiceMapSink)

agent/pkg/api/socket_data_inserter.go

@@ -0,0 +1,71 @@
+package api
+
+import (
+	"encoding/json"
+	"fmt"
+	basenine "github.com/up9inc/basenine/client/go"
+	"github.com/up9inc/mizu/logger"
+	"github.com/up9inc/mizu/shared"
+	"github.com/up9inc/mizu/tap/api"
+	"sync"
+	"time"
+)
+
+type EntryInserter interface {
+	Insert(entry *api.Entry) error
+}
+
+type BasenineEntryInserter struct {
+	connection *basenine.Connection
+}
+
+var instance *BasenineEntryInserter
+var once sync.Once
+
+func GetBasenineEntryInserterInstance() *BasenineEntryInserter {
+	once.Do(func() {
+		instance = &BasenineEntryInserter{}
+	})
+
+	return instance
+}
+
+func (e *BasenineEntryInserter) Insert(entry *api.Entry) error {
+	if e.connection == nil {
+		e.connection = initializeConnection()
+	}
+
+	data, err := json.Marshal(entry)
+	if err != nil {
+		return fmt.Errorf("error marshling entry, err: %v", err)
+	}
+
+	if err := e.connection.SendText(string(data)); err != nil {
+		e.connection.Close()
+		e.connection = nil
+
+		return fmt.Errorf("error sending text to database, err: %v", err)
+	}
+
+	return nil
+}
+
+func initializeConnection() *basenine.Connection{
+	for {
+		connection, err := basenine.NewConnection(shared.BasenineHost, shared.BaseninePort)
+		if err != nil {
+			logger.Log.Errorf("Can't establish a new connection to Basenine server: %v", err)
+			time.Sleep(shared.BasenineReconnectInterval * time.Second)
+			continue
+		}
+
+		if err = connection.InsertMode(); err != nil {
+			logger.Log.Errorf("Insert mode call failed: %v", err)
+			connection.Close()
+			time.Sleep(shared.BasenineReconnectInterval * time.Second)
+			continue
+		}
+
+		return connection
+	}
+}

agent/pkg/dependency/type_names.go

@@ -5,6 +5,7 @@ type DependencyContainerType string
 const (
 	ServiceMapGeneratorDependency = "ServiceMapGeneratorDependency"
 	OasGeneratorDependency        = "OasGeneratorDependency"
+	EntriesInserter               = "EntriesInserter"
 	EntriesProvider               = "EntriesProvider"
 	EntriesSocketStreamer         = "EntriesSocketStreamer"
 	EntryStreamerSocketConnector  = "EntryStreamerSocketConnector"