From 24e26be2e1920de0c579ec4efc7c0e1ef9c47c61 Mon Sep 17 00:00:00 2001
From: zstadler <zeev.stadler@gmail.com>
Date: Thu, 3 Nov 2022 09:52:03 +0200
Subject: [PATCH] Add Docker Healthcheck

Fixes #635
---
 .gitattributes     | 11 +++++++++++
 Dockerfile         |  1 +
 Dockerfile_light   |  1 +
 src/healthcheck.js | 18 ++++++++++++++++++
 4 files changed, 31 insertions(+)
 create mode 100644 .gitattributes
 create mode 100644 src/healthcheck.js

diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..210d79d
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,11 @@
+###############################################################################
+# Set default behavior to automatically normalize line endings.
+###############################################################################
+* text=auto
+
+###############################################################################
+# behavior for Unix scripts
+#
+# Unix scripts are treated as binary by default.
+###############################################################################
+*.sh   eol=lf
diff --git a/Dockerfile b/Dockerfile
index 490749d..f7675fd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,6 +5,7 @@ VOLUME /data
 WORKDIR /data
 EXPOSE 80
 ENTRYPOINT ["/bin/bash", "/usr/src/app/run.sh"]
+HEALTHCHECK CMD node /usr/src/app/src/healthcheck.js
 
 RUN apt-get -qq update \
 && DEBIAN_FRONTEND=noninteractive apt-get -y install \
diff --git a/Dockerfile_light b/Dockerfile_light
index 3312543..79639c2 100644
--- a/Dockerfile_light
+++ b/Dockerfile_light
@@ -5,6 +5,7 @@ EXPOSE 80
 VOLUME /data
 WORKDIR /data
 ENTRYPOINT ["node", "/usr/src/app/", "-p", "80"]
+HEALTHCHECK CMD node /usr/src/app/src/healthcheck.js
 
 RUN mkdir -p /usr/src/app
 COPY / /usr/src/app
diff --git a/src/healthcheck.js b/src/healthcheck.js
new file mode 100644
index 0000000..775ba03
--- /dev/null
+++ b/src/healthcheck.js
@@ -0,0 +1,18 @@
+var http = require("http");
+var options = {
+  timeout: 2000,
+};
+var url = "http://localhost:80/health";
+var request = http.request(url, options, (res) => {
+  console.log(`STATUS: ${res.statusCode}`);
+  if (res.statusCode == 200) {
+    process.exit(0);
+  } else {
+    process.exit(1);
+  }
+});
+request.on("error", function (err) {
+  console.log("ERROR");
+  process.exit(1);
+});
+request.end();