From c92989a8fc738094b205094a1bdd458a40c23d9c Mon Sep 17 00:00:00 2001
From: Horus3
Date: Fri, 20 Feb 2015 23:43:36 +0100
Subject: Add more targets for make, env.sh and check for configuration.

---
 app/.s        |  0
 app/Makefile  | 39 ++++++++++++++++++++++++++++++++-------
 app/config.go | 33 +++++++++++++++++++++++++++++++++
 app/env.sh    | 14 ++++++++++++++
 app/main.go   |  1 +
 5 files changed, 80 insertions(+), 7 deletions(-)
 create mode 100644 app/.s
 create mode 100644 app/config.go
 create mode 100755 app/env.sh

diff --git a/app/.s b/app/.s
new file mode 100644
index 0000000..e69de29
diff --git a/app/Makefile b/app/Makefile
index 49e8b5d..06aed05 100644
--- a/app/Makefile
+++ b/app/Makefile
@@ -1,3 +1,5 @@
+include env.sh
+
 ifndef STATUS_DB_DRIVER
 	export STATUS_DB_DRIVER:=sqlite3
 endif
@@ -20,7 +22,8 @@ ifndef STATUS_HTTP_PORT
 	export STATUS_HTTP_PORT:=8080
 endif
 
-IMPORT_FILE:=import.go
+IMPORT_FILE:=./import.go
+APP:=statuspage
 
 all: kill build run
 
@@ -30,17 +33,39 @@ clean: kill
 	@echo "Removing sqlite3 database..."
 	@rm $(STATUS_DB_CREDENTIALS) || true
 	@echo "Removing binary..."
-	@rm statuspage
+	@rm $(APP)
 	@echo "Done."
 
-build:
-	@echo "package main" > $(IMPORT_FILE)
-	@echo "import (_ \"$(STATUS_DB_IMPORT_DRIVER)\")" >> $(IMPORT_FILE)
+build: import
 	go build -o statuspage
 
 run:
-	./statuspage & 
+	./$(APP) & 
 
 kill:
 	@echo "Killing running instances..."
-	@pkill statuspage || true
+	@pkill $(APP) || true
+
+create_import:
+	@if [ ! -f $(IMPORT_FILE) ] ; \
+	then \
+		echo "package main" > $(IMPORT_FILE) ; \
+	fi
+
+import: 
+	@if [ ! -f $(IMPORT_FILE) ] ; \
+	then \
+		echo "package main" > $(IMPORT_FILE) ; \
+		echo "import _ \"$(STATUS_DB_IMPORT_DRIVER)\"" >> $(IMPORT_FILE) ; \
+	fi
+
+sqlite3: create_import
+	@echo "import _ \"github.com/mattn/go-sqlite3\"" >> $(IMPORT_FILE)
+
+mysql: create_import
+	@echo "import _ \"github.com/go-sql-driver/mysql\"" >> $(IMPORT_FILE)
+
+postgresql: create_import
+	@echo "import _ \"github.com/lib/pq\"" >> $(IMPORT_FILE)
+
+database_all: create_import sqlite3 mysql postgresql
diff --git a/app/config.go b/app/config.go
new file mode 100644
index 0000000..2c1ea5e
--- /dev/null
+++ b/app/config.go
@@ -0,0 +1,33 @@
+package main
+
+import (
+	"log"
+	"os"
+)
+
+func check() {
+	check := os.Getenv("STATUS_DB_DRIVER")
+	if check == "" {
+		log.Fatal("Env STATUS_DB_DRIVER not found. No database connection can be established.")
+	}
+	check = os.Getenv("STATUS_DB_CREDENTIALS")
+	if check == "" {
+		log.Fatal("Env STATUS_DB_CREDENTIALS not found. No database connection can be established.")
+	}
+	check = os.Getenv("STATUS_REDIS_SERVER")
+	if check == "" {
+		log.Fatal("Env STATUS_REDIS_SERVER not found. Provide the ip to the Redis server.")
+	}
+	check = os.Getenv("STATUS_REDIS_PORT")
+	if check == "" {
+		log.Fatal("Env STATUS_REDIS_PORT not found.")
+	}
+	check = os.Getenv("STATUS_HTTP_IP")
+	if check == "" {
+		log.Fatal("Env STATUS_HTTP_IP not found.")
+	}
+	check = os.Getenv("STATUS_HTTP_PORT")
+	if check == "" {
+		log.Fatal("Env STATUS_HTTP_PORT not found.")
+	}
+}
diff --git a/app/env.sh b/app/env.sh
new file mode 100755
index 0000000..81b344f
--- /dev/null
+++ b/app/env.sh
@@ -0,0 +1,14 @@
+#!/bin/sh
+
+# Database
+export STATUS_DB_DRIVER=sqlite3
+export STATUS_DB_CREDENTIALS=../db/status.db
+export STATUS_DB_IMPORT_DRIVER=github.com/mattn/go-sqlite3
+
+# Redis
+export STATUS_REDIS_SERVER=127.0.0.1
+export STATUS_REDIS_PORT=6379
+
+# Http
+export STATUS_HTTP_IP=127.0.0.1
+export STATUS_HTTP_PORT=8080
diff --git a/app/main.go b/app/main.go
index 72be13c..3850a4d 100644
--- a/app/main.go
+++ b/app/main.go
@@ -16,6 +16,7 @@ var mainTempl = template.Must(template.New("global").ParseGlob("../views/*.html"
 var c = cron.New()
 
 func main() {
+	check()
 	run()
 	InitDB()
 	insertHost()
-- 
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