From 4f44e0ac54d0e874d10a1f6883a36f0ea7642e2e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=EC=9D=B4=ED=95=99=EC=9E=AC?= <ririnto@kakao.com>
Date: Tue, 21 Dec 2021 02:57:02 +0900
Subject: [PATCH] =?UTF-8?q?=EB=AC=B4=EC=A4=91=EB=8B=A8=20=EB=B0=B0?=
 =?UTF-8?q?=ED=8F=AC=20=ED=85=8C=EC=8A=A4=ED=8A=B8?=
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---
 build.gradle       |  2 +-
 scripts/health.sh  | 36 ++++++++++++++++++++++++++++++++++++
 scripts/profile.sh | 31 +++++++++++++++++++++++++++++++
 scripts/start.sh   | 32 ++++++++++++++++++++++++++++++++
 scripts/stop.sh    | 18 ++++++++++++++++++
 scripts/switch.sh  | 17 +++++++++++++++++
 6 files changed, 135 insertions(+), 1 deletion(-)
 create mode 100644 scripts/health.sh
 create mode 100644 scripts/profile.sh
 create mode 100644 scripts/start.sh
 create mode 100644 scripts/stop.sh
 create mode 100644 scripts/switch.sh

diff --git a/build.gradle b/build.gradle
index 94b6549..ad87b3d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -17,7 +17,7 @@ apply plugin: 'org.springframework.boot'
 apply plugin: 'io.spring.dependency-management'
 
 group 'com.ririnto.book'
-version '1.0.1-SNAPSHOT'
+version '1.0.1-SNAPSHOT-' + new Date().format("yyyyMMddHHmmss")
 sourceCompatibility = 1.8
 
 repositories {
diff --git a/scripts/health.sh b/scripts/health.sh
new file mode 100644
index 0000000..0424cd3
--- /dev/null
+++ b/scripts/health.sh
@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+
+ABSPATH=$(readlink -f $0)
+ABSDIR=$(dirname $ABSPATH)
+source ${ABSDIR}/profile.sh
+source ${ABSDIR}/switch.sh
+
+IDLE_PORT=$(find_idle_port)
+
+echo "> Health Check Start!"
+echo "> IDLE_PORT: $IDLE_PORT"
+echo "> curl -s http://localhost:$IDLE_PORT/profile"
+sleep 10
+
+for RETRY_COUNT in {1..10}; do
+  RESPONSE=$(curl -s http://localhost:${IDLE_PORT}/profile)
+  UP_COUNT=$(echo ${RESPONSE} | grep 'real' | wc -l)
+
+  if [ ${UP_COUNT} -ge 1 ]; then # $up_count >= 1 ("real" 문자열이 있는지 검증)
+    echo "> Health check 성공"
+    switch_proxy
+    break
+  else
+    echo "> Health check의 응답을 알 수 없거나 혹은 실행 항태가 아닙니다."
+    echo "> Health check: ${RESPONSE}"
+  fi
+
+  if [ ${RETRY_COUNT} -eq 10 ]; then
+    echo "> Health check 실패."
+    echo "> 엔진엑스에 연결하지 않고 배포를 종료합니다."
+    exit 1
+  fi
+
+  echo "> Health check 연결 실패. 재시도..."
+  sleep 10
+done
diff --git a/scripts/profile.sh b/scripts/profile.sh
new file mode 100644
index 0000000..ae43ab3
--- /dev/null
+++ b/scripts/profile.sh
@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+
+# 쉬고 있는 profile 찾기: real1이 사용 중이면 real2가 쉬고 있고, 반대면 real1이 쉬고 있음
+
+function find_idle_profile() {
+  RESPONSE_CODE=$(curl -s -o /dev/null -w "%{http_code}" http://localhost/profile)
+
+  if [ ${RESPONSE_CODE} -ge 400 ]; then # 400보다 크면(즉, 40x/50x 에러 모두 포함)
+    CURRENT_PROFILE=real2
+  else
+    CURRENT_PROFILE=$(curl -s http://localhost/profile)
+  fi
+
+  if [ ${CURRENT_PROFILE} == real1 ]; then
+    IDLE_PROFILE=real2
+  else
+    IDLE_PROFILE=real1
+  fi
+
+  echo "${IDLE_PROFILE}"
+}
+
+function find_idle_port() {
+  IDLE_PROFILE=$(find_idle_profile)
+
+  if [ ${IDLE_PROFILE} == real1 ]; then
+    echo "8081"
+  else
+    echo "8082"
+  fi
+}
diff --git a/scripts/start.sh b/scripts/start.sh
new file mode 100644
index 0000000..e688d10
--- /dev/null
+++ b/scripts/start.sh
@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+
+ABSPATH=$(readlink -f $0)
+ABSDIR=$(dirname $ABSPATH)
+source ${ABSDIR}/profile.sh
+
+REPOSITORY=/home/ec2-user/app/step3
+PROJECT_NAME=freelec-springboot2-webservice
+
+echo "> Build 파일 복사"
+echo "> cp $REPOSITORY/zip/*.jar $REPOSITORY/"
+
+cp $REPOSITORY/zip/*.jar $REPOSITORY/
+
+echo "> 새 애플리케이션 배포"
+JAR_NAME=$(ls -tr $REPOSITORY/*.jar | tail -n 1)
+
+echo "> JAR_NAME: $JAR_NAME"
+
+echo "> $JAR_NAME 에 실행권한 추가"
+
+chmod +x $JAR_NAME
+
+echo "> $JAR_NAME 실행"
+
+IDLE_PROFILE=$(find_idle_profile)
+
+echo "> $JAR_NAME 를 profile=$IDLE_PROFILE 로 실행합니다."
+nohup java -jar \
+	-Dspring.config.location=classpath:/application.properties,classpath:/application-$IDLE_PROFILE.properties,/home/ec2-user/app/application-oauth.properties,/home/ec2-user/app/application-real-db.properties \
+	-Dspring.profiles.active=$IDLE_PROFILE \
+	$JAR_NAME > $REPOSITORY/nohup.out 2>&1 &
diff --git a/scripts/stop.sh b/scripts/stop.sh
new file mode 100644
index 0000000..d9398db
--- /dev/null
+++ b/scripts/stop.sh
@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+
+ABSPATH=$(readlink -f $0)
+ABSDIR=$(dirname $ABSPATH)
+source ${ABSDIR}/profile.sh
+
+IDLE_PORT=$(find_idle_port)
+
+echo "> $IDLE_PORT 에서 구동 중인 애플리케이션 pid 확인"
+IDLE_PID=$(lsof -ti tcp:${IDLE_PORT})
+
+if [ -z ${IDLE_PID} ]; then
+  echo "> 현재 구동 중인 애플리케이션이 없으므로 종료하지 않습니다."
+else
+  echo "> kill -15 $IDLE_PID"
+  kill -15 ${IDLE_PID}
+  sleep 5
+fi
diff --git a/scripts/switch.sh b/scripts/switch.sh
new file mode 100644
index 0000000..08753ba
--- /dev/null
+++ b/scripts/switch.sh
@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+ABSPATH=$(readlink -f $0)
+ABSDIR=$(dirname $ABSPATH)
+source ${ABSDIR}/profile.sh
+
+function switch_proxy() {
+  IDLE_PORT=$(find_idle_port)
+
+  echo "> 전환할 Port: $IDLE_PORT"
+  echo "> Port 전환"
+  echo "set \$service_url http://127.0.0.1:${IDLE_PORT};" | sudo tee /etc/nginx/conf.d/service-url.inc
+
+  echo "> 엔진엑스 Reload"
+  sudo systemctl stop nginx
+  sudo systemctl start nginx
+}
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