From 0e5bec1b9eec14f9070a6f49ad7e0242f1545d66 Mon Sep 17 00:00:00 2001
From: RozenLin <rozen.lin@centrify.com>
Date: Tue, 26 Mar 2019 09:10:25 -0700
Subject: [PATCH] Systemd/dep (#165)

* support the dependency config for linux systemd

* remote the binary file incorrectly added
---
 example/logging/main.go  | 3 +++
 service.go               | 8 +++++++-
 service_systemd_linux.go | 3 +++
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/example/logging/main.go b/example/logging/main.go
index b017abd..07e9f06 100644
--- a/example/logging/main.go
+++ b/example/logging/main.go
@@ -67,6 +67,9 @@ func main() {
 		Name:        "GoServiceExampleLogging",
 		DisplayName: "Go Service Example for Logging",
 		Description: "This is an example Go service that outputs log messages.",
+		Dependencies: []string{
+			"Requires=network.target",
+			"After=network-online.target syslog.target"},
 	}
 
 	prg := &program{}
diff --git a/service.go b/service.go
index 77fa5ae..bcbb38b 100644
--- a/service.go
+++ b/service.go
@@ -111,7 +111,13 @@ type Config struct {
 	Executable string
 
 	// Array of service dependencies.
-	// Not yet implemented on Linux or OS X.
+	// Not yet fully implemented on Linux or OS X:
+	//  1. Support linux-systemd dependencies, just put each full line as the
+	//     element of the string array, such as
+	//     "After=network.target syslog.target"
+	//     "Requires=syslog.target"
+	//     Note, such lines will be directly appended into the [Unit] of
+	//     the generated service config file, will not check their correctness.
 	Dependencies []string
 
 	// The following fields are not supported on Windows.
diff --git a/service_systemd_linux.go b/service_systemd_linux.go
index 4b57dca..da3ecce 100644
--- a/service_systemd_linux.go
+++ b/service_systemd_linux.go
@@ -228,6 +228,9 @@ func (s *systemd) Restart() error {
 const systemdScript = `[Unit]
 Description={{.Description}}
 ConditionFileIsExecutable={{.Path|cmdEscape}}
+{{range .Dependencies}}
+{{.}}
+{{end}}
 
 [Service]
 StartLimitInterval=5