From 925db35646363f7adcb151c01ed1e212ce23b883 Mon Sep 17 00:00:00 2001
From: Henrik Hautakoski <henrik@eossweden.org>
Date: Mon, 17 Jan 2022 13:56:32 +0100
Subject: [PATCH] Add cli option and functionality to write PID file.

---
 go.mod  |  1 +
 go.sum  |  4 ++++
 main.go | 12 ++++++++++++
 3 files changed, 17 insertions(+)

diff --git a/go.mod b/go.mod
index 7cc07b8..00460dd 100644
--- a/go.mod
+++ b/go.mod
@@ -5,6 +5,7 @@ go 1.14
 require (
 	github.com/eoscanada/eos-go v0.10.1-0.20220112183548-39fba816311f
 	github.com/eosswedenorg-go/eos-ship-client v0.0.0-20220113161228-7007edec3bb4
+	github.com/eosswedenorg-go/pid v1.0.1
 	github.com/go-redis/redis/v8 v8.11.4
 	github.com/pborman/getopt/v2 v2.1.0
 )
diff --git a/go.sum b/go.sum
index 992b651..c2e5a69 100644
--- a/go.sum
+++ b/go.sum
@@ -23,6 +23,8 @@ github.com/eoscanada/eos-go v0.10.1-0.20220112183548-39fba816311f h1:IYqtCoi9kur
 github.com/eoscanada/eos-go v0.10.1-0.20220112183548-39fba816311f/go.mod h1:dKlu/HXNPI4I5yD7cITTwzfYLNfVaaFt9Y4VngtnhrY=
 github.com/eosswedenorg-go/eos-ship-client v0.0.0-20220113161228-7007edec3bb4 h1:ndwu3rC6iuW3cMIqnzBprUnFjbvu50evaiuaMcISwTk=
 github.com/eosswedenorg-go/eos-ship-client v0.0.0-20220113161228-7007edec3bb4/go.mod h1:CeLc0kNIEsJOdiafqrJQynbXfsRauvC2B6sRnR+PaOU=
+github.com/eosswedenorg-go/pid v1.0.1 h1:W4AEnnNwb041SpNR1uTZ/KbJ0OTA5eqiqIR1Q5Ah6A0=
+github.com/eosswedenorg-go/pid v1.0.1/go.mod h1:wiOB/JXGt4YA3+T0j0xmCGSc3Jxzb7Ti/Ftli1fgWu4=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
@@ -107,6 +109,7 @@ github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UV
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
 github.com/stretchr/testify v1.5.1 h1:nOGnQDM7FYENwehXlg/kFVnos3rEvtKTjRvOWSzb6H4=
 github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/teris-io/shortid v0.0.0-20171029131806-771a37caa5cf h1:Z2X3Os7oRzpdJ75iPqWZc0HeJWFYNCvKsfpQwFpRNTA=
 github.com/teris-io/shortid v0.0.0-20171029131806-771a37caa5cf/go.mod h1:M8agBzgqHIhgj7wEn9/0hJUZcrvt9VY+Ln+S1I5Mha0=
 github.com/test-go/testify v1.1.4 h1:Tf9lntrKUMHiXQ07qBScBTSA0dhYQlu83hswqelv1iE=
@@ -271,6 +274,7 @@ gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
diff --git a/main.go b/main.go
index 8d250a6..e25d816 100644
--- a/main.go
+++ b/main.go
@@ -9,6 +9,7 @@ import (
     "log"
     "time"
     "github.com/pborman/getopt/v2"
+    "github.com/eosswedenorg-go/pid"
     eos "github.com/eoscanada/eos-go"
     shipclient "github.com/eosswedenorg-go/eos-ship-client"
 )
@@ -84,6 +85,7 @@ func main() {
     showHelp := getopt.BoolLong("help", 'h', "display this help text")
     showVersion := getopt.BoolLong("version", 'v', "display this help text")
     configFile := getopt.StringLong("config", 'c', "./config.json", "Config file to read", "file")
+    pidFile := getopt.StringLong("pid", 'p', "", "Where to write process id", "file")
 
     getopt.Parse()
 
@@ -97,6 +99,16 @@ func main() {
         return
     }
 
+    // Write PID file
+    if len(*pidFile) > 0 {
+        log.Printf("Writing pid to: %s", *pidFile)
+        err = pid.Save(*pidFile)
+        if err != nil {
+            log.Println(err)
+            return
+        }
+    }
+
     // Parse config
     config, err = LoadConfig(*configFile)
     if err != nil {