Make configurable the number of days to remove old sessions

config/config_test.go

@@ -882,6 +882,41 @@ func TestArchiveReadDays(t *testing.T) {
 	}
 }
 
+func TestRemoveSessionsDays(t *testing.T) {
+	os.Clearenv()
+	os.Setenv("REMOVE_SESSIONS_DAYS", "7")
+
+	parser := NewParser()
+	opts, err := parser.ParseEnvironmentVariables()
+	if err != nil {
+		t.Fatalf(`Parsing failure: %v`, err)
+	}
+
+	expected := 7
+	result := opts.RemoveSessionsDays()
+
+	if result != expected {
+		t.Fatalf(`Unexpected REMOVE_SESSIONS_DAYS value, got %v instead of %v`, result, expected)
+	}
+}
+
+func TestDefaultRemoveSessionsDays(t *testing.T) {
+	os.Clearenv()
+
+	parser := NewParser()
+	opts, err := parser.ParseEnvironmentVariables()
+	if err != nil {
+		t.Fatalf(`Parsing failure: %v`, err)
+	}
+
+	expected := 30
+	result := opts.RemoveSessionsDays()
+
+	if result != expected {
+		t.Fatalf(`Unexpected REMOVE_SESSIONS_DAYS value, got %v instead of %v`, result, expected)
+	}
+}
+
 func TestRunMigrationsWhenUnset(t *testing.T) {
 	os.Clearenv()
 

config/options.go

@@ -27,6 +27,7 @@ const (
 	defaultDatabaseMaxConns      = 20
 	defaultDatabaseMinConns      = 1
 	defaultArchiveReadDays       = 60
+	defaultRemoveSessionsDays    = 30
 	defaultListenAddr            = "127.0.0.1:8080"
 	defaultCertFile              = ""
 	defaultKeyFile               = ""
@@ -67,6 +68,7 @@ type Options struct {
 	certKeyFile               string
 	cleanupFrequency          int
 	archiveReadDays           int
+	removeSessionsDays        int
 	pollingFrequency          int
 	batchSize                 int
 	workerPoolSize            int
@@ -105,6 +107,7 @@ func NewOptions() *Options {
 		certKeyFile:               defaultKeyFile,
 		cleanupFrequency:          defaultCleanupFrequency,
 		archiveReadDays:           defaultArchiveReadDays,
+		removeSessionsDays:        defaultRemoveSessionsDays,
 		pollingFrequency:          defaultPollingFrequency,
 		batchSize:                 defaultBatchSize,
 		workerPoolSize:            defaultWorkerPoolSize,
@@ -271,6 +274,11 @@ func (o *Options) ArchiveReadDays() int {
 	return o.archiveReadDays
 }
 
+// RemoveSessionsDays returns the number of days after which to remove sessions.
+func (o *Options) RemoveSessionsDays() int {
+	return o.removeSessionsDays
+}
+
 // PocketConsumerKey returns the Pocket Consumer Key if configured.
 func (o *Options) PocketConsumerKey(defaultValue string) string {
 	if o.pocketConsumerKey != "" {

config/parser.go

@@ -118,6 +118,8 @@ func (p *Parser) parseLines(lines []string) (err error) {
 			p.opts.batchSize = parseInt(value, defaultBatchSize)
 		case "ARCHIVE_READ_DAYS":
 			p.opts.archiveReadDays = parseInt(value, defaultArchiveReadDays)
+		case "REMOVE_SESSIONS_DAYS":
+			p.opts.removeSessionsDays = parseInt(value, defaultRemoveSessionsDays)
 		case "PROXY_IMAGES":
 			p.opts.proxyImages = parseString(value, defaultProxyImages)
 		case "CREATE_ADMIN":