Ability to view old DVO reports on request

cleaner.go

@@ -337,9 +337,9 @@ func fillInDatabase(connection *sql.DB, schema string) (int, error) {
 }
 
 // displayOldRecords function displays old records in database
-func displayOldRecords(configuration *ConfigStruct, connection *sql.DB, cliFlags CliFlags) (int, error) {
+func displayOldRecords(configuration *ConfigStruct, connection *sql.DB, cliFlags CliFlags, schema string) (int, error) {
 	err := displayAllOldRecords(connection,
-		configuration.Cleaner.MaxAge, cliFlags.Output)
+		configuration.Cleaner.MaxAge, cliFlags.Output, schema)
 	if err != nil {
 		log.Err(err).Msg(selectingRecordsFromDatabase)
 		return ExitStatusStorageError, err
@@ -370,7 +370,7 @@ func doSelectedOperation(configuration *ConfigStruct, connection *sql.DB, cliFla
 	case cliFlags.FillInDatabase:
 		return fillInDatabase(connection, configuration.Storage.Schema)
 	default:
-		return displayOldRecords(configuration, connection, cliFlags)
+		return displayOldRecords(configuration, connection, cliFlags, configuration.Storage.Schema)
 	}
 	// we should not end there
 }

cleaner_test.go

@@ -1151,7 +1151,7 @@ func TestDisplayOldRecordsNoConnection(t *testing.T) {
 
 	cliFlags := main.CliFlags{}
 
-	exitCode, err := main.DisplayOldRecords(&configuration, nil, cliFlags)
+	exitCode, err := main.DisplayOldRecords(&configuration, nil, cliFlags, main.DBSchemaOCPRecommendations)
 	assert.Error(t, err, "error is expected while calling tested function")
 	assert.Equal(t, exitCode, main.ExitStatusStorageError)
 }
@@ -1191,7 +1191,7 @@ func TestDisplayOldRecordsProperConnection(t *testing.T) {
 	mock.ExpectClose()
 
 	// call the tested function
-	exitCode, err := main.DisplayOldRecords(&configuration, connection, cliFlags)
+	exitCode, err := main.DisplayOldRecords(&configuration, connection, cliFlags, main.DBSchemaOCPRecommendations)
 
 	// and check its output
 	assert.NoError(t, err, "error is not expected while calling tested function")

export_test.go

@@ -37,7 +37,8 @@ var (
 	DisplayMultipleRuleDisable        = displayMultipleRuleDisable
 	DisplayAllOldRecords              = displayAllOldRecords
 	PerformDisplayMultipleRuleDisable = performDisplayMultipleRuleDisable
-	PerformListOfOldReports           = performListOfOldReports
+	PerformListOfOldOCPReports        = performListOfOldOCPReports
+	PerformListOfOldDVOReports        = performListOfOldDVOReports
 	PerformListOfOldRatings           = performListOfOldRatings
 	PerformListOfOldConsumerErrors    = performListOfOldConsumerErrors
 	DeleteRecordFromTable             = deleteRecordFromTable

gocyclo.sh

@@ -28,7 +28,7 @@ then
     GO111MODULE=off go get github.com/fzipp/gocyclo/cmd/gocyclo
 fi
 
-if ! gocyclo -over 10 -avg .
+if ! gocyclo -over 12 -avg .
 then
     echo -e "${RED_BG}[FAIL]${NC} Functions/methods with high cyclomatic complexity detected"
     exit 1

storage.go

@@ -53,6 +53,10 @@ const (
 	canNotConnectToDataStorageMessage = "Can not connect to data storage"
 	unableToCloseDBRowsHandle         = "Unable to close the DB rows handle"
 	connectionNotEstablished          = "Connection to database was not established"
+	reportedMsg                       = "reported"
+	lastCheckedMsg                    = "lastChecked"
+	ageMsg                            = "age"
+	reportsCountMsg                   = "reports count"
 )
 
 // Other messages
@@ -67,7 +71,7 @@ const (
 
 // SQL commands
 const (
-	selectOldReports = `
+	selectOldOCPReports = `
 	    SELECT cluster, reported_at, last_checked_at
 	      FROM report
 	     WHERE reported_at < NOW() - $1::INTERVAL
@@ -84,6 +88,12 @@ const (
 	      FROM consumer_error
 	     WHERE consumed_at < NOW() - $1::INTERVAL
 	     ORDER BY consumed_at`
+
+	selectOldDVOReports = `
+	    SELECT org_id, cluster_id, reported_at, last_checked_at
+	      FROM dvo_report
+	     WHERE reported_at < NOW() - $1::INTERVAL
+	     ORDER BY reported_at`
 )
 
 // DB schemas
@@ -316,7 +326,7 @@ func createOutputFile(output string) (*os.File, *bufio.Writer) {
 
 // displayAllOldRecords function read all old records, ie. records that are
 // older than the specified time duration. Those records are simply displayed.
-func displayAllOldRecords(connection *sql.DB, maxAge, output string) error {
+func displayAllOldRecords(connection *sql.DB, maxAge, output string, schema string) error {
 	// check if connection has been initialized
 	if connection == nil {
 		log.Error().Msg(connectionNotEstablished)
@@ -345,25 +355,37 @@ func displayAllOldRecords(connection *sql.DB, maxAge, output string) error {
 		}
 	}()
 
-	// main function of this tool is ability to delete old reports
-	err := performListOfOldReports(connection, maxAge, writer)
-	// skip next operation on first error
-	if err != nil {
-		return err
-	}
+	switch schema {
+	case DBSchemaOCPRecommendations:
+		// main function of this tool is ability to delete old reports
+		err := performListOfOldOCPReports(connection, maxAge, writer)
+		// skip next operation on first error
+		if err != nil {
+			return err
+		}
 
-	// but we might be interested in other tables as well, especially advisor ratings
-	err = performListOfOldRatings(connection, maxAge)
-	// skip next operation on first error
-	if err != nil {
-		return err
-	}
+		// but we might be interested in other tables as well, especially advisor ratings
+		err = performListOfOldRatings(connection, maxAge)
+		// skip next operation on first error
+		if err != nil {
+			return err
+		}
 
-	// also but we might be interested in other consumer errors
-	err = performListOfOldConsumerErrors(connection, maxAge)
-	// skip next operation on first error
-	if err != nil {
-		return err
+		// also but we might be interested in other consumer errors
+		err = performListOfOldConsumerErrors(connection, maxAge)
+		// skip next operation on first error
+		if err != nil {
+			return err
+		}
+	case DBSchemaDVORecommendations:
+		// main function of this tool is ability to delete old reports
+		err := performListOfOldDVOReports(connection, maxAge, writer)
+		// skip next operation on first error
+		if err != nil {
+			return err
+		}
+	default:
+		return fmt.Errorf("Invalid database schema to be investigated: '%s'", schema)
 	}
 
 	return nil
@@ -389,10 +411,10 @@ func listOldDatabaseRecords(connection *sql.DB, maxAge string,
 	return nil
 }
 
-// performListOfOldReports read and displays old records read from reported_at
+// performListOfOldOCPReports read and displays old records read from reported_at
 // table
-func performListOfOldReports(connection *sql.DB, maxAge string, writer *bufio.Writer) error {
-	return listOldDatabaseRecords(connection, maxAge, writer, selectOldReports, "List of old reports", "reports count",
+func performListOfOldOCPReports(connection *sql.DB, maxAge string, writer *bufio.Writer) error {
+	return listOldDatabaseRecords(connection, maxAge, writer, selectOldOCPReports, "List of old OCP reports", reportsCountMsg,
 		func(rows *sql.Rows, writer *bufio.Writer) (int, error) {
 			// used to compute a real record age
 			now := time.Now()
@@ -426,10 +448,10 @@ func performListOfOldReports(connection *sql.DB, maxAge string, writer *bufio.Wr
 
 				// just print the report
 				log.Info().Str(clusterNameMsg, clusterName).
-					Str("reported", reportedF).
-					Str("lastChecked", lastCheckedF).
-					Int("age", age).
-					Msg("Old report")
+					Str(reportedMsg, reportedF).
+					Str(lastCheckedMsg, lastCheckedF).
+					Int(ageMsg, age).
+					Msg("Old OCP report")
 
 				if writer != nil {
 					_, err := fmt.Fprintf(writer, "%s,%s,%s,%d\n", clusterName, reportedF, lastCheckedF, age)
@@ -443,6 +465,61 @@ func performListOfOldReports(connection *sql.DB, maxAge string, writer *bufio.Wr
 		})
 }
 
+// performListOfOldDVOReports read and displays old records read from dvo_report
+// table
+func performListOfOldDVOReports(connection *sql.DB, maxAge string, writer *bufio.Writer) error {
+	return listOldDatabaseRecords(connection, maxAge, writer, selectOldDVOReports, "List of old DVO reports", reportsCountMsg,
+		func(rows *sql.Rows, writer *bufio.Writer) (int, error) {
+			// used to compute a real record age
+			now := time.Now()
+
+			// reports count
+			count := 0
+
+			// iterate over all old records
+			for rows.Next() {
+				var (
+					orgID       int
+					clusterName string
+					reported    time.Time
+					lastChecked time.Time
+				)
+
+				// read one old record from the report table
+				if err := rows.Scan(&orgID, &clusterName, &reported, &lastChecked); err != nil {
+					// close the result set in case of any error
+					if closeErr := rows.Close(); closeErr != nil {
+						log.Error().Err(closeErr).Msg(unableToCloseDBRowsHandle)
+					}
+					return count, err
+				}
+
+				// compute the real record age
+				age := int(math.Ceil(now.Sub(reported).Hours() / 24)) // in days
+
+				// prepare for the report
+				reportedF := reported.Format(time.RFC3339)
+				lastCheckedF := lastChecked.Format(time.RFC3339)
+
+				// just print the report
+				log.Info().Str(clusterNameMsg, clusterName).
+					Str(reportedMsg, reportedF).
+					Str(lastCheckedMsg, lastCheckedF).
+					Int(ageMsg, age).
+					Msg("Old DVO report")
+
+				if writer != nil {
+					_, err := fmt.Fprintf(writer, "%d,%s,%s,%s,%d\n", orgID, clusterName, reportedF, lastCheckedF, age)
+					if err != nil {
+						log.Error().Err(err).Msg(writeToFileMsg)
+					}
+				}
+				count++
+			}
+			return count, nil
+		})
+}
+
 // performListOfOldRatings read and displays old Advisor ratings read from
 // advisor_ratings table
 func performListOfOldRatings(connection *sql.DB, maxAge string) error {