smtp: refactor collector (#1739)

Signed-off-by: Jan-Otto Kröpke <[email protected]>

internal/collector/smtp/const.go

@@ -0,0 +1,46 @@
+package smtp
+
+const (
+	badmailedMessagesBadPickupFileTotal     = "Badmailed Messages (Bad Pickup File)"
+	badmailedMessagesGeneralFailureTotal    = "Badmailed Messages (General Failure)"
+	badmailedMessagesHopCountExceededTotal  = "Badmailed Messages (Hop Count Exceeded)"
+	badmailedMessagesNDROfDSNTotal          = "Badmailed Messages (NDR of DSN)"
+	badmailedMessagesNoRecipientsTotal      = "Badmailed Messages (No Recipients)"
+	badmailedMessagesTriggeredViaEventTotal = "Badmailed Messages (Triggered via Event)"
+	bytesSentTotal                          = "Bytes Sent Total"
+	bytesReceivedTotal                      = "Bytes Received Total"
+	categorizerQueueLength                  = "Categorizer Queue Length"
+	connectionErrorsTotal                   = "Total Connection Errors"
+	currentMessagesInLocalDelivery          = "Current Messages in Local Delivery"
+	directoryDropsTotal                     = "Directory Drops Total"
+	dnsQueriesTotal                         = "DNS Queries Total"
+	dsnFailuresTotal                        = "Total DSN Failures"
+	etrnMessagesTotal                       = "ETRN Messages Total"
+	inboundConnectionsCurrent               = "Inbound Connections Current"
+	inboundConnectionsTotal                 = "Inbound Connections Total"
+	localQueueLength                        = "Local Queue Length"
+	localRetryQueueLength                   = "Local Retry Queue Length"
+	mailFilesOpen                           = "Number of MailFiles Open"
+	messageBytesReceivedTotal               = "Message Bytes Received Total"
+	messageBytesSentTotal                   = "Message Bytes Sent Total"
+	messageDeliveryRetriesTotal             = "Message Delivery Retries"
+	messageSendRetriesTotal                 = "Message Send Retries"
+	messagesCurrentlyUndeliverable          = "Messages Currently Undeliverable"
+	messagesDeliveredTotal                  = "Messages Delivered Total"
+	messagesPendingRouting                  = "Messages Pending Routing"
+	messagesReceivedTotal                   = "Messages Received Total"
+	messagesRefusedForAddressObjectsTotal   = "Messages Refused for Address Objects"
+	messagesRefusedForMailObjectsTotal      = "Messages Refused for Mail Objects"
+	messagesRefusedForSizeTotal             = "Messages Refused for Size"
+	messagesSentTotal                       = "Messages Sent Total"
+	messagesSubmittedTotal                  = "Total messages submitted"
+	ndrsGeneratedTotal                      = "NDRs Generated"
+	outboundConnectionsCurrent              = "Outbound Connections Current"
+	outboundConnectionsRefusedTotal         = "Outbound Connections Refused"
+	outboundConnectionsTotal                = "Outbound Connections Total"
+	queueFilesOpen                          = "Number of QueueFiles Open"
+	pickupDirectoryMessagesRetrievedTotal   = "Pickup Directory Messages Retrieved Total"
+	remoteQueueLength                       = "Remote Queue Length"
+	remoteRetryQueueLength                  = "Remote Retry Queue Length"
+	routingTableLookupsTotal                = "Routing Table Lookups Total"
+)