From ec30d420e984f42cf41baf1cdfb55ee8c59f231b Mon Sep 17 00:00:00 2001
From: jason plumb <75337021+breedx-splk@users.noreply.github.com>
Date: Mon, 19 Jul 2021 17:42:26 -0700
Subject: [PATCH] Skeleton for overhead testing subproject. (#3554)

* Skeleton for overhead testing subproject.

* clone into base image instead of submodule

* remove submodules file (even though it was empty)

* use multi-stage dockerfile to simplify image

* strip ssh and add CMD

* use the JRE base for the final stage
---
 testing-overhead/.dockerignore             |  5 ++++
 testing-overhead/Dockerfile-petclinic-base | 19 +++++++++++++++
 testing-overhead/README.md                 | 27 ++++++++++++++++++++++
 3 files changed, 51 insertions(+)
 create mode 100644 testing-overhead/.dockerignore
 create mode 100644 testing-overhead/Dockerfile-petclinic-base
 create mode 100644 testing-overhead/README.md

diff --git a/testing-overhead/.dockerignore b/testing-overhead/.dockerignore
new file mode 100644
index 000000000000..22ba70f55bb4
--- /dev/null
+++ b/testing-overhead/.dockerignore
@@ -0,0 +1,5 @@
+*.hprof
+*.jfr
+*.class
+logs/
+.idea/
diff --git a/testing-overhead/Dockerfile-petclinic-base b/testing-overhead/Dockerfile-petclinic-base
new file mode 100644
index 000000000000..6b00aaf70d5f
--- /dev/null
+++ b/testing-overhead/Dockerfile-petclinic-base
@@ -0,0 +1,19 @@
+FROM adoptopenjdk:11-jdk as app-build
+
+# This is the base image that will contain a built version of the spring-petclinic-rest
+# application. Installing the dependencies and maven compiling the application is time
+# consuming, so we do it in a base image to save time nightly.
+
+RUN apt update && apt install -y git
+WORKDIR /app
+RUN git clone http://github.com/spring-petclinic/spring-petclinic-rest.git
+WORKDIR /app/spring-petclinic-rest
+RUN ./mvnw package -Dmaven.test.skip=true
+RUN cp target/spring-petclinic-rest*.jar /app/spring-petclinic-rest.jar
+
+FROM adoptopenjdk:11-jre
+
+COPY --from=app-build /app/spring-petclinic-rest.jar /app/spring-petclinic-rest.jar
+WORKDIR /app
+EXPOSE 9966
+CMD ["java", "-jar", "spring-petclinic-rest.jar"]
diff --git a/testing-overhead/README.md b/testing-overhead/README.md
new file mode 100644
index 000000000000..69228d2dfe7c
--- /dev/null
+++ b/testing-overhead/README.md
@@ -0,0 +1,27 @@
+
+# Overhead tests
+
+This is a work in progress. 
+
+This directory will contain tools and utilities
+that help us to measure the performance overhead introduced by 
+the agent and to measure how this overhead changes over time.
+
+## Contents
+
+tbd
+
+## Config
+
+tbd
+
+## Setup and Usage
+
+Once we have an established base image published for `spring-petclinic-rest`, this step
+can be avoided by most users. For now, there is just a spring petclinic base image.
+
+```
+$ docker build -f Dockerfile-petclinic-base .
+```
+
+Remaining usage TBD.
\ No newline at end of file