upgrade dependencies, go to 1.12.x and fix ES retry logic

Author: alexferl

Diff for: Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.11.2-alpine as builder
+FROM golang:1.12.6-alpine as builder
 MAINTAINER Alexandre Ferland <[email protected]>
 
 ENV GO111MODULE=on
@@ -18,5 +18,7 @@ RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build
 
 FROM scratch
 COPY --from=builder /build/tinysyslog /tinysyslog
+
 EXPOSE 5140 5140/udp
+
 ENTRYPOINT ["/tinysyslog", "--address", "0.0.0.0:5140"]

Diff for: LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2018 Alexandre Ferland
+Copyright (c) 2019 Alexandre Ferland
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

Diff for: README.md

@@ -69,20 +69,24 @@ You can now send logs from your app(s) to `tinysyslog:5140`.
 ## Configuration
 ```
 Usage of ./tinysyslog:
-      --address string                    IP and port to listen on. (default "127.0.0.1:5140")
-      --filter string                     Filter to filter logs with. Valid filters are: null and regex. Null doesn't do any filtering. (default "null")
-      --filter-regex string               Regex to filter with.
-      --log-file string                   The log file to write to. 'stdout' means log to stdout and 'stderr' means log to stderr. (default "stdout")
-      --log-format string                 The log format. Valid format values are: text, json. (default "text")
-      --log-level string                  The granularity of log outputs. Valid level names are: debug, info, warning, error and critical. (default "info")
-      --mutator string                    Mutator type to use. Valid mutators are: text, json. (default "text")
-      --sink string                       Sink to save syslogs to. Valid sinks are: console and filesystem. (default "console")
-      --sink-console-output string        Console to output too. Valid outputs are: stdout, stderr. (default "stdout")
-      --sink-filesystem-filename string   File to write incoming logs to. (default "syslog.log")
-      --sink-filesystem-max-age int       Maximum age (in days) before a log is deleted. (default 30)
-      --sink-filesystem-max-backups int   Maximum backups to keep. (default 10)
-      --sink-filesystem-max-size int      Maximum log size (in megabytes) before it's rotated. (default 100)
-      --socket-type string                Type of socket to use, TCP or UDP. If no type is specified, both are used.
+      --address string                         IP and port to listen on. (default "127.0.0.1:5140")
+      --filter string                          Filter to filter logs with. Valid filters are: null and regex. Null doesn't do any filtering. (default "null")
+      --filter-grok-fields strings             Grok fields to keep.
+      --filter-grok-pattern string             Grok pattern to filter with.
+      --filter-regex string                    Regex to filter with.
+      --log-file string                        The log file to write to. 'stdout' means log to stdout and 'stderr' means log to stderr. (default "stdout")
+      --log-format string                      The log format. Valid format values are: text, json. (default "text")
+      --log-level string                       The granularity of log outputs. Valid level names are: debug, info, warning, error and critical. (default "info")
+      --mutator string                         Mutator type to use. Valid mutators are: text, json. (default "text")
+      --sink-console-output string             Console to output too. Valid outputs are: stdout, stderr. (default "stdout")
+      --sink-elasticsearch-address string      Elasticsearch server address. (default "http://127.0.0.1:9200")
+      --sink-elasticsearch-index-name string   Elasticsearch index name. (default "tinysyslog")
+      --sink-filesystem-filename string        File to write incoming logs to. (default "syslog.log")
+      --sink-filesystem-max-age int            Maximum age (in days) before a log is deleted. (default 30)
+      --sink-filesystem-max-backups int        Maximum backups to keep. (default 10)
+      --sink-filesystem-max-size int           Maximum log size (in megabytes) before it's rotated. (default 100)
+      --sinks strings                          Sinks to save syslogs to. Valid sinks are: console, elasticsearch and filesystem. (default [console])
+      --socket-type string                     Type of socket to use, TCP or UDP. If no type is specified, both are used.
 ```
 
 ## Benchmarks

Diff for: factories.go

@@ -7,9 +7,9 @@ import (
 	"github.com/sirupsen/logrus"
 	"github.com/spf13/viper"
 
-	"github.com/admiralobvious/tinysyslog/filters"
-	"github.com/admiralobvious/tinysyslog/mutators"
-	"github.com/admiralobvious/tinysyslog/sinks"
+	"tinysyslog/filters"
+	"tinysyslog/mutators"
+	"tinysyslog/sinks"
 )
 
 // MutatorFactory creates a new object with mutators.Mutator interface

Diff for: go.mod

@@ -1,13 +1,14 @@
-module github.com/admiralobvious/tinysyslog
+module tinysyslog
+
+go 1.12
 
 require (
-	github.com/BurntSushi/toml v0.3.1 // indirect
-	github.com/mailru/easyjson v0.0.0-20180823135443-60711f1a8329 // indirect
-	github.com/olivere/elastic v6.2.15+incompatible
-	github.com/pkg/errors v0.8.1 // indirect
-	github.com/sirupsen/logrus v1.2.0
+	github.com/fortytw2/leaktest v1.3.0 // indirect
+	github.com/mailru/easyjson v0.0.0-20190626092158-b2ccc519800e // indirect
+	github.com/olivere/elastic v6.2.19+incompatible
+	github.com/sirupsen/logrus v1.4.2
 	github.com/spf13/pflag v1.0.3
-	github.com/spf13/viper v1.2.1
+	github.com/spf13/viper v1.4.0
 	github.com/vjeantet/grok v1.0.0
 	gopkg.in/mcuadros/go-syslog.v2 v2.2.1
 	gopkg.in/natefinch/lumberjack.v2 v2.0.0